CN215297623U

CN215297623U - Fault detection device of grid-connected system

Info

Publication number: CN215297623U
Application number: CN202120403702.XU
Authority: CN
Inventors: 高志强; 可俊
Original assignee: Yunnan Shuoming Power Engineering Co ltd
Current assignee: Yunnan Shuoming Power Engineering Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-12-24
Anticipated expiration: 2031-02-24

Abstract

The utility model relates to the technical field of fault detection devices, in particular to a fault detection device of a grid-connected system, which comprises a supporting table, wherein two guide rods are fixedly connected on the upper surface of a guide plate, nuts are arranged on the guide rods, the rear end of the upper surface of the supporting table is provided with a groove, two sides of the groove are fixedly connected with fixed blocks, and cable fixing components are arranged on the upper surface of the fixed blocks, the screw thread on the surface of a second fixed rod is connected with the joints of the guide rods and the guide plate through screw thread meshing, so that the rotating nuts can drive the nuts to move towards a knight-errant, the detection lead can be provided with electric power while being tightly pressed, the detection lead can be provided with electric power through the storage battery, the device has portability, and the rotating handle is driven to rotate by a motor, whether the megger body is available or not can be tested, and the working efficiency of the detection device is improved.

Description

Fault detection device of grid-connected system

Technical Field

The utility model relates to a fault detection device technical field particularly, relates to a fault detection device of grid-connected system.

Background

The grid-connected photovoltaic power generation system can convert direct current output by the solar cell array into alternating current with the same amplitude, the same frequency and the same phase as the voltage of a power grid, and is connected with the power grid and transmits electric energy to the power grid. The flexibility of this power generation system is that when sunlight is strong, the photovoltaic power generation system feeds excess power into the grid while supplying power to the ac load.

At present, most of grid-connected systems are connected together through cables, and long-time use can lead to the failure such as short circuit between equipment to be unavailable, and the staff is needed to carry out failure detection on the cables, and the cables are horizontally placed on the ground to be detected when detection is carried out, so that accidents are easy to happen, and the cables are led to contact with human bodies.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a fault detection device of system of being incorporated into the power networks, can effectively solve the problem in the background art.

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

the utility model provides a fault detection device of grid-connected system, includes a supporting bench, brace table the place ahead fixed surface is connected oily motor safety cover, brace table upper surface front end fixedly connected with megohmmeter body, megohmmeter body upper surface is provided with the display screen, megohmmeter body rear fixed surface is connected with the baffle, baffle fixed connection is in the brace table upper surface, two guide arms of fixed surface are connected with on the baffle, install the nut on the guide arm, brace table upper surface rear end is provided with the recess, recess both sides fixedly connected with fixed block, surface mounting has the fixed subassembly of cable on the fixed block.

Preferably, the lower end of the megohmmeter body extends into the support table, a rotating handle is rotatably connected to the lower portion of the megohmmeter body, the rotating handle is fixedly connected to an output shaft of the motor, and the motor is mounted inside the motor protection cover.

Preferably, a second fixing rod is fixedly connected to the lower surface of the nut, the second fixing rod penetrates through the guide rod and the guide plate and extends into the cavity of the support table, and the second fixing rod is meshed with the joint of the guide rod and the guide plate through threads.

Preferably, a storage battery is arranged below the inside of the support table, and the storage battery is connected to the megameter body through a lead.

Preferably, each cable fixing assembly comprises a first fixing plate, each first fixing plate is fixedly connected to the upper surface of the fixing block, a hole is formed in the middle of each fixing block, and first fixing rods are fixedly connected to the front end and the rear end of the upper surface of each first fixing plate.

Preferably, a second fixing plate is movably arranged on the surface of each first fixing rod, a spring is arranged between the lower surface of each second fixing plate and the upper surface of each first fixing plate, each spring is sleeved on the surface of each first fixing rod, a supporting rod penetrates through the other side of each second fixing plate, and the lower end of each supporting rod is fixedly connected with a top block.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the screw thread and the guide arm on through the second fixed rod surface are connected through thread engagement with the baffle junction, make rotatory nut can drive the nut and remove to the knight-errant, make can provide electric power for detecting the wire when compressing tightly the detecting wire, through being provided with the battery, can provide electric power for detecting the wire when can providing electric power for the megohmmeter body, make the device have the portability, it is rotatory to drive rotatory handle through the motor, can test whether the megohmmeter body is available, the work efficiency of this detection device has been improved.

(2) The cable that will need to detect passes hole and kicking block inside placing the cable in the recess afterwards, plays the effect of support through the spring afterwards, withstands the second fixed plate and moves to the top, drives bracing piece and kicking block and moves to the top for thereby kicking block and hole dislocation are fixed the cable, are convenient for detect the cable, have improved the device's work efficiency and security.

Drawings

Fig. 1 is a schematic view of a front view structure of a fault detection device of a grid-connected system according to the present invention;

fig. 2 is a schematic view of the overall structure of a fault detection device of a grid-connected system according to the present invention;

fig. 3 is a schematic view of a top view structure of a fault detection device of a grid-connected system according to the present invention;

fig. 4 is the utility model relates to a grid-connected system's fault detection device's test inner structure schematic diagram.

In the figure: 1. a support table; 2. a motor protection cover; 3. a cable securing assembly; 4. a megger body; 5. a nut; 6. a display screen; 7. a guide plate; 8. a groove; 9. a hole; 10. a fixed block; 11. a top block; 12. a first fixing plate; 13. a second fixing plate; 14. a support bar; 15. a first fixing lever; 16. a spring; 17. a second fixing bar; 18. a cavity; 19. a storage battery; 20. a guide bar; 21. rotating the handle; 22. an electric motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to 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. 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.

As shown in fig. 1-4, a fault detection device of grid-connected system, including brace table 1, brace table 1 the place ahead fixed surface connects oily motor safety cover 2, brace table 1 upper surface front end fixedly connected with

megger body

4, 4 upper surfaces of megger body are provided with

display screen

6, 4 rear fixed surface of megger body is connected with baffle 7, baffle 7 fixed connection is in brace table 1 upper surface, two guide arms 20 of fixed surface connection are gone up to baffle 7, install nut 5 on the guide arm 20, brace table 1 upper surface rear end is provided with recess 8, recess 8 both sides fixedly connected with fixed block 10, surface mounting has cable fixed component 3 on the fixed block 10.

Through above-mentioned technical scheme, will detect wire one end winding on guide arm 20, rotatory nut 5 afterwards drives nut 5 and will detect the wire and fix on 7 surfaces of baffle, and the cable that will detect afterwards passes through hole 9, places and fixes the cable through cable fixed subassembly 3 in recess 8 afterwards, and starter motor 22 before fixed drives rotatory handle 21 rotatory, can test whether megohmmeter body 4 is available, has improved this detection device's work efficiency.

In this embodiment, 4 lower extremes of megger body extend to inside the brace table 1, 4 below rotations of megger body are connected with rotatory handle 21, rotatory handle 21 fixed connection is on motor 22 output shaft, motor 22 installs inside motor safety cover 2, and it is rotatory to drive rotatory handle 21 through motor 22 for megger body 4 detects by oneself voluntarily and prevents that megger body 4 from damaging, and it is laborsaving to save trouble.

In this embodiment, the lower surface of the nut 5 is fixedly connected with a second fixing rod 17, the second fixing rod 17 penetrates through the guide rod 20 and the guide plate 7 and extends into the cavity 18 of the supporting table 1, the joint of the second fixing rod 17 and the guide rod 20 and the guide plate 7 is connected through thread engagement, and the joint of the second fixing rod 17 and the guide rod 20 and the guide plate 7 is connected through thread engagement, so that the nut 5 can be driven to move towards the knight, and the detection lead can be provided with electric power while being pressed.

In the present embodiment, a storage battery 19 is disposed below the inside of the support base 1, the storage battery 19 is connected to the megger body 4 through a wire, and the storage battery 19 is disposed to supply power to the megger body 4 and power to the detection wire, so that the device is portable.

In this embodiment, each cable fixing assembly 3 includes a first fixing plate 12, each first fixing plate 12 is fixedly connected to the upper surface of a fixing block 10, a hole 9 is formed in the middle of each fixing block 10, first fixing rods 15 are fixedly connected to the front and rear ends of the upper surface of each first fixing plate 12, a second fixing plate 13 is movably arranged on the surface of each first fixing rod 15, a spring 16 is arranged between the lower surface of each second fixing plate 13 and the upper surface of the first fixing plate 12, each spring 16 is sleeved on the surface of the first fixing rod 15, a supporting rod 14 is fixedly penetrated through the other side of each second fixing plate 13, a top block 11 is fixedly connected to the lower end of each supporting rod 14, a cable is penetrated through the hole 9 and the inside of the top block 11, and then the spring 16 plays a supporting role to support the second fixing plate 13 to move upwards, the supporting rod 14 and the top block 11 are driven to move upwards, so that the top block 11 is dislocated with the hole 9 to fix the cable.

The working principle of the fault detection device of the grid-connected system is as follows:

when the device is used, one end of a detection lead is wound on the guide rod 20, then the nut 5 is rotated, the thread on the surface of the second fixing rod 17 is meshed with the joint of the guide rod 20 and the guide plate 7 through the thread, so that the nut 5 can be driven to move towards the knight, the detection lead can be provided with power while being pressed, then a cable to be detected passes through the hole 9, is placed in the groove 8, then the cable passes through the hole 9 and the inside of the top block 11, then the spring 16 plays a supporting role, the second fixing plate 13 is jacked to move upwards, the supporting rod 14 and the top block 11 are driven to move upwards, the top block 11 and the hole 9 are staggered, the cable is fixed, the storage battery 19 is arranged, the power can be provided for the megohmmeter body 4, and the power can be provided for the detection lead, and the device has portability, the motor 22 is started before fixing, the rotating handle 21 is driven to rotate through the motor 22, whether the megameter body 4 is usable or not can be tested, and the working efficiency of the detection device is improved.

It should be noted that the specific type of the motor 22: YB 2-132S-4H.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fault detection device of grid-connected system, includes brace table (1), its characterized in that: supporting bench (1) the place ahead fixed surface connects oily motor safety cover (2), supporting bench (1) upper surface front end fixedly connected with megger body (4), megger body (4) upper surface is provided with display screen (6), megger body (4) rear fixed surface is connected with baffle (7), baffle (7) fixed connection is in supporting bench (1) upper surface, two guide arms (20) of fixed surface are connected with on baffle (7), install nut (5) on guide arm (20), supporting bench (1) upper surface rear end is provided with recess (8), recess (8) both sides fixedly connected with fixed block (10), surface mounting has cable fixing component (3) on fixed block (10).

2. The fault detection device of the grid-connected system according to claim 1, characterized in that: the utility model discloses a megameter, including megameter body (4), motor safety cover (2), megameter body (4) lower extreme extends to inside the brace table (1), megameter body (4) below is rotated and is connected with rotatory handle (21), rotatory handle (21) fixed connection is on motor (22) output shaft, motor (22) are installed inside motor safety cover (2).

3. The fault detection device of the grid-connected system according to claim 1, characterized in that: the lower surface of the nut (5) is fixedly connected with a second fixing rod (17), the second fixing rod (17) penetrates through the guide rod (20) and the guide plate (7) and extends into the cavity (18) of the support table (1), and the joint of the second fixing rod (17) and the guide rod (20) and the guide plate (7) is connected through threaded engagement.

4. The fault detection device of the grid-connected system according to claim 1, characterized in that: and a storage battery (19) is arranged below the inner part of the support table (1), and the storage battery (19) is connected to the megger body (4) through a lead.

5. The fault detection device of the grid-connected system according to claim 1, characterized in that: every cable fixed subassembly (3) include first fixed plate (12), every first fixed plate (12) fixed connection in fixed block (10) upper surface, every fixed block (10) middle part is provided with hole (9), every first fixed plate (12) upper surface front and back both ends fixedly connected with first dead lever (15).

6. The fault detection device of the grid-connected system according to claim 5, wherein: every first dead lever (15) activity on the surface has second fixed plate (13), every be provided with spring (16) between second fixed plate (13) lower surface and first fixed plate (12) upper surface, every first dead lever (15) is located to spring (16) cover on the surface, every second fixed plate (13) opposite side is fixed to run through has bracing piece (14), every bracing piece (14) lower extreme fixedly connected with kicking block (11).