CN-120559287-B - Direct-current multipoint grounding fault finder

CN120559287BCN 120559287 BCN120559287 BCN 120559287BCN-120559287-B

Abstract

The invention provides a direct current multipoint grounding fault finder, which relates to the technical field of direct current system fault finding and comprises a shell, wherein an instrument body is arranged in the shell, a top cover is arranged on the shell, an electric leakage detection structure is arranged on the top cover, a plurality of groups of storage batteries and a heat dissipation structure are arranged at the bottom in the shell, a clamping and fixing structure is fixed in the shell, the storage batteries correspond to the instrument body and the electric leakage detection structure, the heat dissipation structure corresponds to the clamping and fixing structure, the clamping and fixing structure corresponds to the top cover, and a jacking structure is in sliding fit in the shell. According to the invention, the top cover is arranged on the shell, the jacking structure is arranged in the shell, and the top cover can be jacked up through the jacking structure, so that the top cover is protected during use, the instrument body is prevented from being damaged, the top cover can be directly turned over for use, the device is flexible to use, the device is more convenient to use, and the device is suitable for different environments.

Inventors

LIU DEHUA
SONG SHUAI
HUA YE
ZHENG YANBIN
WANG PEISONG
KANG HENG
LI FU
LI CHENYANG

Assignees

山东磐锐电气有限公司

Dates

Publication Date: 20260508
Application Date: 20250716

Claims (4)

1. The utility model provides a direct current multipoint earthing fault finder, which comprises a housing (1), and is characterized in that, be equipped with instrument body (2) in shell (1), top cap (28) are installed on shell (1), electric leakage detection structure is installed on top cap (28), multiunit battery (5) and heat radiation structure are installed to the bottom in shell (1), clamping fixing structure is fixed with in shell (1), battery (5) are corresponding with instrument body (2) and electric leakage detection structure, heat radiation structure is corresponding with clamping fixing structure, clamping fixing structure is corresponding with top cap (28), sliding fit has jack-up structure in shell (1), install joint structure and rotating structure between jack-up structure and top cap (28), supporting structure is corresponding with jack-up structure in shell (1), install locking structure between supporting structure and the jack-up structure, a plurality of first spouts (10) have been seted up in shell (1), jack-up structure includes a plurality of first bracing pieces (11) and second bracing pieces (12), first spout (10) are corresponding with first bracing piece (11) and second bracing piece (12), first bracing piece (16) are corresponding with first bracing piece (16) and second bracing piece (16) have been seted up on telescopic link (16), telescopic link (13) are all set up in telescopic link (16), the screw thread groove (13) corresponds to the screw (14), a plurality of grooves (15) are formed in the bottom of the shell (1), the grooves (15) correspond to the telescopic rods (16), the telescopic rods (16) comprise a first rod body (17) and a second rod body (18), a plurality of first clamping grooves (20) are formed in the first rod body (17), the second sliding grooves (22) correspond to the second rod body (18), a first spring (23) and a damping block are arranged between the second rod body (18) and the groove walls of the second sliding grooves (22), limiting plates (19) are fixed at the end parts of the second rod body (18), the limiting plates (19) are in rotary connection with the groove walls of the grooves (15), rotary grooves corresponding to the limiting plates (19) are formed in the grooves (15), the limiting plates (19) are fixedly connected with the screw (14), a plurality of first clamping blocks (21) are formed in the groove (15), the periphery of the first rod body (17) and are divided into two layers, the first clamping grooves (21) are arranged up and down, the first clamping blocks (21) are made of rubber materials and are in the first clamping blocks (21) and are made of the first clamping blocks, the clamping and fixing structure comprises a heat conducting plate (3) and an upper clamping plate (31) which are fixed in a shell (1), the upper clamping plate (31) is of a return structure, an instrument body (2) is placed between the heat conducting plate (3) and the upper clamping plate (31), the heat conducting plate (3) is in contact with the bottom of the instrument body (2), a third sliding groove (33) is formed in the upper clamping plate (31), a sliding plate (32) is slidably matched in the third sliding groove (33), a plurality of second springs (34) are fixed between the sliding plate (32) and the third sliding groove (33), the sliding plate (32) is of a return structure, a plurality of third clamping blocks (35) are fixed at the end part of the sliding plate (32), a first slot (29) is formed in a top cover (28), a plug rod (30) is fixed on the sliding plate (32), a plurality of fourth clamping grooves (36) are formed in the first slot (29), a plurality of fifth clamping grooves (37) are formed in the third sliding groove (33), and the fourth clamping grooves (36) and the fifth clamping blocks (35) are corresponding to the third clamping blocks.
2. The direct-current multipoint earthing fault finder of claim 1, wherein the clamping structure comprises a second clamping block (24) fixed at the end part of the first supporting rod (11), a second clamping groove (25) is formed in the top cover (28), and the second clamping groove (25) corresponds to the second clamping block (24).
3. The direct current multipoint earthing fault finder of claim 1, wherein the rotating structure comprises a rotating frame (26) fixed at the end part of the second supporting rod (12), a rotating shaft (27) is fixed in the rotating frame (26), the rotating shaft (27) is rotatably connected with the top cover (28), and the electric leakage detection structure comprises an electromagnetic induction sensor (9) fixed on the top cover (28).
4. The direct-current multipoint grounding fault finder of claim 1, wherein the heat dissipation structure comprises a plurality of heat dissipation fins (4) fixed on the lower side of the heat conduction plate (3), the heat dissipation fins (4) are located above the storage battery (5) and are in contact with the storage battery (5), an air inlet (6) is formed in the bottom of the shell (1), air outlets (7) are formed in two sides of the shell (1), the air outlets (7) are located on the side faces of the heat dissipation fins (4), and a blower (8) is fixed in the air inlet (6).

Description

Direct-current multipoint grounding fault finder Technical Field The invention relates to the technical field of direct current system fault finding, in particular to a direct current multipoint grounding fault finding instrument. Background The direct current system is an important component of the power system and is used as a direct current power supply for relay protection, control signals, automatic devices, accident lighting, operation control of main equipment and the like, the voltage of the positive pole and the negative pole of the direct current system to the ground is balanced under normal conditions, the insulation level is normal, the direct current system is easy to generate faults which are harmful to the power system, if the direct current system has a point ground fault, the normal operation of the equipment or the direct current system cannot be influenced, if the direct current ground fault has two or more points, the protection device in the direct current system can generate misoperation or refusal action, the equipment and personal safety are seriously influenced, the grounding fault of the existing direct current system is greatly influenced by the grounding type and the working environment, the relatively complex working environment can possibly damage the direct current fault searching equipment, the service life of the direct current fault searching equipment is influenced, and when the existing direct current grounding fault searching instrument is used, the detector and the detector are taken out from the protection box, and then the detector and the detector are connected, and foam is clamped for a long time after the foam searching is started, and the equipment is easy to shake and damaged, and the equipment is easy to be damaged after the foam is clamped and is easy to be used. To this end, the invention provides a direct current multipoint ground fault finder. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a direct current multipoint ground fault finder to solve the problems in the prior art, the direct current multipoint ground fault finder is suitable for different environments, the application range of a device is enlarged, the single-time use time of the device can be prolonged, a connecting cable is not needed for supplying power, the application range of the device is more flexible, heat can be dissipated through a heat dissipation structure when the direct current multipoint ground fault finder is used, the damage of the device caused by overheat of a storage battery and an instrument body is prevented, the service life of the device is prolonged, when the wet air enters the instrument body under the condition of higher air humidity, the damage of the instrument body is caused, a certain protection effect can be achieved on the instrument body, the service life of the instrument body is prolonged, the electric leakage detection structure is arranged on a top cover, whether a direct current cable is damaged or not can be detected, the direct current multipoint ground fault is detected in an auxiliary mode, the device is prevented from being damaged through the support structure, the service life of the device is prolonged, the support structure can be contracted when the device is not used, the device is conveniently stored, the device is further lifted through the support structure, the heat dissipation effect is improved, and the heat dissipation effect is improved. In order to achieve the aim, the direct current multipoint grounding fault detector comprises a shell, wherein an instrument body is arranged in the shell, a top cover is arranged on the shell, an electric leakage detection structure is arranged on the top cover, a plurality of groups of storage batteries and a heat dissipation structure are arranged at the bottom in the shell, a clamping and fixing structure is fixed in the shell, the storage batteries correspond to the instrument body and the electric leakage detection structure, the heat dissipation structure corresponds to the clamping and fixing structure, the clamping and fixing structure corresponds to the top cover, a jacking structure is slidably matched in the shell, a clamping structure and a rotating structure are arranged between the jacking structure and the top cover, a supporting structure is arranged on the lower side of the shell, the supporting structure corresponds to the jacking structure, and a locking structure is arranged between the supporting structure and the jacking structure. Further, a plurality of first sliding grooves are formed in the shell, the jacking structure comprises a plurality of first supporting rods and second supporting rods, and the first sliding grooves correspond to the first supporting rods and the second supporting rods. Further, the supporting structure comprises a plurality of telescopic rods, the locking structure comprises a screw rod fixed on the