CN111812360A

CN111812360A - Relay protection test line box

Info

Publication number: CN111812360A
Application number: CN202010588991.5A
Authority: CN
Inventors: 王申树; 姜山; 苏登高; 张福来; 王飞亚; 王运霞; 李志华; 李昱瑾
Original assignee: Lianyungang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Lianyungang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-10-23

Abstract

The invention discloses a relay protection test wire box which comprises a plurality of automatic test wire recovery boxes, wherein two ends of a wire are respectively connected with a wire head, the inner sides of an upper cover and a lower cover are provided with circular guide grooves, the circle center of the circular guide groove of the lower cover is provided with a fixed column which is vertically and fixedly connected with the lower cover, a wire wheel is hollow and cylindrical and is arranged between the upper cover and the lower cover, the wire wheel is limited by the circular guide grooves of the upper cover and the lower cover and only has rotational freedom, a clockwork spring is arranged inside the wire wheel, the center end of the clockwork spring is fixed on the fixed column, the tail end of the clockwork spring is fixedly connected with the inner surface of the wire wheel, the wire is folded at the center, the center point of the wire is fixedly connected with the outer surface of the wire wheel, the two edges of the folded wire are wound in parallel and in the same direction. Each phase of the test wire can be pulled out and retracted independently, manual winding is not needed during recovery, and the test wire is simple and quick.

Description

Relay protection test line box

Technical Field

The invention relates to a relay protection test wire box, and belongs to the technical field of power test equipment.

Background

In the calibration of the relay protection device, a test line is needed to connect a calibration instrument and a secondary circuit or a photoelectric circuit of the device to be calibrated so as to transmit a voltage signal, a current signal or a position signal. The test wires are directly formed by copper wires (or optical fibers) with insulating covers, each test wire is independently distributed and different in length, manual winding, arrangement and retraction are needed after the test wires are used, and a plurality of messy wires are stored without fixed devices. Because the test lines used for relay protection are independently distributed, the test lines are different in length and easily cause the following phenomena:

1. manual winding is needed during recovery, time and labor are wasted, and the scattered storage of the short connecting wires with different specifications is easy to be confused;

2. when in use, the phenomenon that the wire is knotted with other short-circuit wires or the wire itself is existed, and the arrangement and the untwisting are very complicated;

3. because the length of the wire is fixed and not telescopic, and the lengths of the specification wires are different, the wire is easy to cause in use, the operation of other workers is influenced by overlong lines, or the connection between a checking instrument and checked equipment cannot be realized due to too short prepared wire length;

4. after the check-up instrument is connected with the checked-up equipment, the line is overhead and unfixed, and other workers can easily mistakenly touch and drag the line when passing by.

Disclosure of Invention

The invention aims to provide a relay protection test wire box, which can realize convenient recovery, storage and storage of a relay protection test connecting wire, can adjust the length randomly in use, and can simply fix the test wire to prevent mistaken collision.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a relay protection test line box, includes that a plurality of test lines retrieve the box automatically, and every test line retrieves the box automatically and includes: an upper cover, a clockwork spring, a wire wheel, a wire head, a wire outlet, a fixed column, a lower cover, a circular guide groove and a conducting wire, the two ends of the wire are respectively connected with a wire head, the inner sides of the upper cover and the lower cover are provided with circular guide grooves, the circle center of the circular guide groove of the lower cover is provided with a fixed column which is vertically and fixedly connected with the lower cover, the wire wheel is hollow and cylindrical and is arranged between the upper cover and the lower cover, the wire wheel only has rotational freedom degree under the limitation of the circular guide grooves of the upper cover and the lower cover, the clockwork spring is arranged inside the wire wheel, the central end of the clockwork spring is fixed on the fixed column, the tail end of the clockwork spring is fixedly connected with the inner surface of the wire wheel, the wire is folded at the center, the two edges of the folded wire are wound in parallel and in the same direction along the outer surface of the wire wheel, the automatic test wire recovery box is provided with two wire outlets, the wire heads at the two ends of the wire respectively penetrate through the two wire outlets, and the clockwork spring is in a tightening state when the two ends of the wire are pulled out to the maximum length; the end of a thread tip is equipped with insulating head and screw thread and leads electrical pillar in proper order, and the cross section of insulating head is greater than the outlet, prevents that the insulating head from getting into the inside of outlet, and the screw thread is led electrical pillar and is connected with the wire electricity, and the different types of plug that relay protection equipment check-up work used all is equipped with the internal thread hole, leads electrical pillar screw-thread fit with the screw thread and is connected and can change as required, and the automatic box fixed connection that retrieves of a plurality of test lines is a holistic relay protection test line box, and magnet is established in the four corners.

The object of the invention can be further achieved by the following technical measures:

the utility model provides an aforementioned experimental line box of relay protection, the outlet department of retrieving the box automatically at the test wire sets up manual chucking button, and when manual chucking button pressed, the wire blocked.

Compared with the prior art, the invention has the beneficial effects that: adopt the mode of accomodating of this device, the recovery of test wire is simple, and each looks can both be pulled out alone and withdraw, does not need artifical winding, simple swift, deposit the clarity when retrieving. The knotting phenomenon does not exist when the device is used, and the use is convenient. The length can be adjusted at will and will not be too short or too long. The line head adopts the modular design, can change the plug according to actual conditions. Set up the strong magnet with the experimental line box of relay protection, can realize the fixed of protection test line and iron cabinet door position, avoid the test line to be bumped by the mistake.

Drawings

FIG. 1 is a view showing the construction of an upper cover of the present invention;

FIG. 2 is a structural view of a balance spring of the present invention;

FIG. 3 is a diagram of the reel structure of the present invention;

FIG. 4 is a view of the construction of the lower cover of the present invention;

FIG. 5 is a schematic view of an automatic test line recycling cassette of the present invention;

FIG. 6 is a head of thread construction of the present invention;

fig. 7 is an overall configuration diagram of the relay protection test wire box of the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

As shown in fig. 1 to 4, the relay protection test wire box of the present invention includes a plurality of test wire automatic recovery boxes 16, and each test wire automatic recovery box 16 includes: the automatic test line recovery device comprises

upper covers

1 and 2, a line wheel 3, a line head 4, line outlets 5, a fixed column 6, a lower cover 7, a circular guide groove 8 and a lead 9, wherein two ends of the lead 9 are respectively connected with the line head 4, the inner sides of the upper cover 1 and the lower cover 7 are provided with the circular guide groove 8, the circle center of the circular guide groove 8 of the lower cover 7 is provided with the fixed column 6 which is vertically and fixedly connected with the lower cover, the line wheel 3 is hollow and cylindrical and is arranged between the upper cover and the lower cover, the line wheel 3 is limited by the circular guide grooves 8 of the upper cover 1 and the lower cover 7 and only has rotational freedom, a clockwork spring 2 is arranged inside the line wheel 3, the central end of the clockwork spring 2 is fixed on the fixed column 6, the tail end of the clockwork spring 2 is fixedly connected with the inner surface of the line wheel 3, the lead 9 is folded at the center, the central point of the lead 9 is fixedly connected with the, two ends of the wire 9 are respectively penetrated out from the two wire outlets 5, and the spring is in a tightening state when the two ends of the wire 9 are pulled out to the maximum length; 4 tip of end of a thread is equipped with insulating head 14 and screw thread and leads electrical pillar 15 in proper order, the cross section of insulating head 14 is greater than outlet 5, prevent that insulating head 14 from getting into outlet 5's inside, screw thread is led electrical pillar 15 and is connected with 9 electricity of wire, different types of plug that relay protection equipment check-up work used all is equipped with the internal thread hole, it is connected and can change as required to lead electrical pillar 15 screw-thread fit with the screw thread, 16 fixed connection of box is the experimental line box of holistic relay protection automatically retrieved to a plurality of test wires, magnet 11 is established in the four corners of the experimental line box lateral surface of relay protection, utilize the cabinet door all be the characteristics of iron, utilize the experimental line box of relay protection to adsorb in the strong magnet cabinet door, can realize the fixed of.

As shown in figure 5, set up manual chucking button 10 in the outlet 5 department of the automatic box that retrieves of test wire, when manual chucking button was pressed, blocked the wire, made the wire no longer flexible, realized the function of the fixed length of chucking after the electric wire was pulled out to convenient wiring and measurement, finish using loosens manual chucking button, in the automatic box that retracts of wire under the clockwork spring drive, facilitate the use, accomodate.

As shown in fig. 6, for different types of plugs which need to face different tests, the invention adopts the threaded conductive column to be connected with the plug in a threaded fit manner, thereby facilitating the installation and disassembly and being flexibly replaced according to requirements.

For an optical fiber: the wire end is provided with an SC connector, and the SC connector is applied to different interfaces by configuring an SC-to-FC connector and an SC-to-ST connector.

As shown in fig. 7, there are 6 automatic test line recycling boxes for the embodiment of integrating the relay protection test line boxes into a whole. The sequence is that the optical fiber automatic take-up box → the A phase test line automatic recovery box → the B phase test line automatic recovery box → the C phase test line automatic recovery box → the N phase test line automatic recovery box → the optical fiber automatic take-up box.

The automatic box electric wire insulation skin color of retrieving of the box of the automatic line box of receiving of optic fibre is the yellow, and the automatic box electric wire insulation skin color of retrieving of B looks test wire is the green, and the automatic box electric wire insulation skin color of retrieving of C looks test wire is red, and the automatic box electric wire insulation skin color of retrieving of N looks test wire is blue and is used for distinguishing the looks difference. 6 single-phase test wire automatic recovery boxes (16) are fastened by four penetrating screws and nuts (12) to prevent loosening.

In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.

Claims

1. A relay protection test wire box, comprising a plurality of test wire automatic recovery boxes (16), each test wire automatic recovery box (16) comprising: the winding wheel comprises an upper cover (1), a clockwork spring (2), a wire wheel (3), a wire head (4), a wire outlet (5), a fixed column (6), a lower cover (7), a circular guide groove (8) and a lead (9), wherein the two ends of the lead (9) are respectively connected with the wire head (4), the inner sides of the upper cover (1) and the lower cover (7) are provided with the circular guide groove (8), the circle center of the circular guide groove (8) of the lower cover (7) is provided with the fixed column (6) vertically and fixedly connected with the lower cover, the wire wheel (3) is hollow cylindrical and is arranged between the upper cover and the lower cover, the wire wheel (3) is limited by the circular guide groove (8) of the upper cover (1) and the lower cover (7) and only has rotational freedom, the wire wheel (2) is arranged inside the wire wheel (3), the center end of the clockwork spring (2) is fixed on the fixed column (6), and the tail end, the wire (9) is folded at the center, the center point of the wire (9) is fixedly connected with the outer surface of the wire wheel (3), the two edges of the folded wire (9) are wound in parallel and in the same direction along the outer surface of the wire wheel (3), the automatic test wire recovery box (16) is provided with two wire outlets (5), the wire heads (4) at the two ends of the wire (9) respectively penetrate out of the two wire outlets (5), and the clockwork spring is in a tightening state when the two ends of the wire (9) are pulled out to the maximum length; end of a thread (4) tip is equipped with insulating head (14) and screw thread and leads electrical pillar (15) in proper order, the cross section of insulating head (14) is greater than outlet (5), prevent insulating head (14) inside that gets into outlet (5), screw thread is led electrical pillar (15) and is connected with wire (9) electricity, the heterogeneous plug that relay protection equipment check-up work used all is equipped with the internal thread hole, it is connected and can change as required with screw thread conductive pillar (15) screw-thread fit, box (16) fixed connection is the experimental line box of holistic relay protection automatically to a plurality of experimental lines, magnet (11) are established in the four corners of the experimental line box lateral surface of relay protection.

2. The relay protection test wire box according to claim 1, wherein a manual clamping button (10) is arranged at the wire outlet (5) of the test wire automatic recovery box (16), and when the manual clamping button (10) is pressed, the conducting wire (9) is clamped.