CN202281794U

CN202281794U - Current sampling device

Info

Publication number: CN202281794U
Application number: CN2011203151039U
Authority: CN
Inventors: 刘德涵
Original assignee: ZHEJIANG SOODE TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG SOODE TECHNOLOGY Co Ltd
Priority date: 2011-08-26
Filing date: 2011-08-26
Publication date: 2012-06-20
Anticipated expiration: 2021-08-26

Abstract

The utility model discloses a current sampling device. The device comprises a zero sequence current transformer and three sampling current transformers, wherein each sampling current transformer and the zero-sequence current transformer respectively comprises an insulating shell, an iron core and a coil; a sleeve and an O-shaped accommodating groove positioned on the outer side of the sleeve are formed in the center of the insulating shell of each sampling current transformer; the insulating shell of the zero sequence current transformer is provided with an accommodating groove, two short sleeves and two high sleeves; the two short sleeves and the two high sleeves are positioned in the accommodating groove; the high sleeves extend out of the insulating shell of the zero sequence current transformer; the two sampling current transformers are sleeved in parallel on the two high sleeves of the zero sequence current transformer; and the third sampling current transformer is positioned on one sides, far from the zero sequence current transformer, of the two sampling current transformers and presses the two sampling current transformers on the zero sequence current transformer. The current sampling device has the advantages of reasonable and compact structure and small occupied space, and can be used for effectively reducing the whole manufacture cost.

Description

Current sampling device

Technical field

The utility model belongs to the fire monitor technical field, is specifically related to a kind of current sampling device.

Background technology

Residual-current electrical fire monitor is an a kind of important on-site terminal device of gathering numerous electric disaster hidden-trouble information; Its function mainly contains the residual current detection alarm and realizes microcomputer Long-distance Control etc. through configuration software, applicable to complex circuit such as the high place of electrical fire incidence, bulk storage plant, office, commercial building, hotel, dwelling house and recreation place and occasion that reliability, security, the dirigibility of power supply are had relatively high expectations.

Common in the market residual-current electrical fire monitor comprises shell body and the isolating switch, ZCT, residual current control module, network communication module, the described isolating switch that are installed separately independently of one another in shell body are traditional breaker of plastic casing; Described ZCT and conventional circuit breaker are in series; Described residual current control module be arranged on conventional circuit breaker around; Calculating, demonstration etc. are handled, comprised to residual current to the ZCT sampling; Described network communication module is connected with the residual current control module, and the signal that the residual current control module was handled transmits with host computer communicates by letter.

Patent documentation CN201698556U discloses a kind of residual-current electrical fire monitoring detector; Its structure is made up of RCCB, current transformer, wiring board, base, loam cake, button; RCCB is contained on the support on base the right, and the wiring board base plate is placed in the base left side, and the wiring board panel is inserted on the base plate; Current transformer is inserted in the RCCB bottom, and it is drawn winding displacement and is inserted on the socket of wiring board panel; Phase insulating board is inserted in the RCCB upper end; Indicator light wire board, LCD, button wiring board are contained in and cover, on cover the turnover cable card board be set.This kind structure exists structure comparatively complicated, and bigger weak point takes up room.

The utility model content

The purpose of the utility model provides a kind of structure comparatively rationally compactness, the less current that takes up room sampling apparatus.

The technical scheme that realizes the utility model purpose is: comprise a zero sequence current mutual inductor and three sample rate current mutual inductors; Said each sample rate current mutual inductor comprises insulation shell, iron core and coil; Said zero sequence current mutual inductor comprises insulation shell, iron core and coil; Each sample rate current mutual inductor insulation shell center is provided with a sleeve pipe and the square shape storage tank that is positioned at outside of sleeve, and its iron core and coil are arranged in storage tank; Said zero sequence current mutual inductor insulation shell is provided with storage tank and four sleeve pipes that are arranged in storage tank, and said four sleeve pipes comprise at least two high sleeve pipes, and said high sleeve pipe stretches out the zero sequence current mutual inductor insulation shell; Its iron core and coil are arranged in storage tank, and each sleeve pipe is arranged in vestibule unshakable in one's determination; First is set on two high sleeve pipes of zero sequence current mutual inductor through self overlapping tube side-by-side with second sample rate current mutual inductor; The 3rd sample rate current mutual inductor is positioned at the side of these two sample rate current mutual inductors away from zero sequence current mutual inductor, and is pressed on these two sample rate current mutual inductors on the zero sequence current mutual inductor.

In the such scheme, said four sleeve pipes comprise two short sleeve pipes and two high sleeve pipes, and said short sleeve pipe is lower than the zero sequence current mutual inductor insulation shell, and said short sleeve pipe and high sleeve pipe are provided with at interval.

In the such scheme, first and second sample rate current mutual inductor respectively are provided with the positive stop lug boss of a protrusion at its side away from zero sequence current mutual inductor, and are combined into draw-in groove of formation; The said the 3rd each and every one sample rate current mutual inductor is embedded in this draw-in groove.

In the such scheme, said three sample rate current mutual inductors are lined up isosceles triangle.

In the such scheme, said iron core and coil are fixed in the corresponding storage tank through the plastic packaging mode.

The utlity model has positive effect: the utility model is through being set together zero sequence current mutual inductor and sample rate current mutual inductor, and structure is compact and reasonable comparatively, and it is less to take up room; And through unique shape and structure design, simplified assembly operation, and need between each circuitry phase, insulating barrier be set, can effectively reduce whole manufacturing cost.

Description of drawings

Fig. 1 is a kind of perspective view of the utility model;

Fig. 2 is a kind of explosive view of current sampling device shown in Figure 1;

Fig. 3 is a kind of explosive view of current sampling device shown in Figure 1 during from another viewed.

Be labeled as shown in the accompanying drawing: sample rate current mutual inductor 3, insulation shell 32, sleeve pipe 33, storage tank 34, positive stop lug boss 35, zero sequence current mutual inductor 4, insulation shell 41, storage tank 42, short sleeve pipe 43, high sleeve pipe 44.

Embodiment

(embodiment 1)

Fig. 1 to Fig. 7 has shown a kind of embodiment of the utility model, and wherein Fig. 1 is a kind of perspective view of the utility model; Fig. 2 is a kind of explosive view of current sampling device shown in Figure 1; Fig. 3 is a kind of explosive view of current sampling device shown in Figure 1 during from another viewed.

Present embodiment is a kind of current sampling device, sees that Fig. 1 to shown in Figure 3, comprises a zero sequence current mutual inductor 4 and three sample rate current mutual inductors 3; Said each sample rate current mutual inductor 3 comprises insulation shell 32, iron core and coil; Said zero sequence current mutual inductor 4 comprises insulation shell 41, iron core and coil.

Each sample rate current mutual inductor insulation shell 32 center is provided with a sleeve pipe 33 and the square shape storage tank 34 that is positioned at sleeve pipe 33 outsides, and its iron core and coil are arranged in storage tank 34; Said zero sequence current mutual inductor insulation shell 41 is provided with storage tank 42 and two short sleeve pipes 43 and two high sleeve pipes 44 of being arranged in storage tank 42, and its iron core and coil are arranged in storage tank 42, and each sleeve pipe is arranged in vestibule unshakable in one's determination; Said short sleeve pipe 43 is lower than zero sequence current mutual inductor insulation shell 41, and said high sleeve pipe 44 stretches out zero sequence current mutual inductor insulation shell 41, and said short sleeve pipe 43 is provided with high sleeve pipe 44 at interval; First is set on two zero sequence current mutual inductors, the 4 high sleeve pipes 44 through self sleeve pipe 33 with second sample rate current mutual inductor 3 side by side; The 3rd sample rate current mutual inductor 3 is positioned at the side of these two sample rate current mutual inductors 3 away from zero sequence current mutual inductor 4, and is pressed on these two sample rate current mutual inductors 3 on the zero sequence current mutual inductor 4.

Said three sample rate current mutual inductors 3 are lined up isosceles triangle.

First and second sample rate current mutual inductor 3 respectively are provided with the positive stop lug boss 35 of a protrusion at its side away from zero sequence current mutual inductor 4, and are combined into draw-in groove of formation; Said the 3rd sample rate current mutual inductor 3 is embedded in this draw-in groove.

In the present embodiment, said iron core and coil are fixed in the corresponding storage tank through the plastic packaging mode.

Present embodiment is through being set together zero sequence current mutual inductor and sample rate current mutual inductor, and structure is compact and reasonable comparatively, and it is less to take up room; And through unique shape and structure design, simplified assembly operation, and need between each circuitry phase, insulating barrier be set, can effectively reduce whole manufacturing cost.

Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection domain of the utility model.

Claims

1. a current sampling device comprises a zero sequence current mutual inductor (4) and three sample rate current mutual inductors (3); Said each sample rate current mutual inductor (3) comprises insulation shell (32), iron core and coil; Said zero sequence current mutual inductor (4) comprises insulation shell (41), iron core and coil; It is characterized in that:

Each sample rate current mutual inductor insulation shell (32) center is provided with a sleeve pipe (33) and is positioned at the square shape storage tank (34) in sleeve pipe (33) outside, and its iron core and coil are arranged in storage tank (34);

Said zero sequence current mutual inductor insulation shell (41) is provided with storage tank (42) and is arranged in four sleeve pipes of storage tank (42), and said four sleeve pipes comprise at least two high sleeve pipes (44), and said high sleeve pipe (44) stretches out zero sequence current mutual inductor insulation shell (41); Its iron core and coil are arranged in storage tank (42), and each sleeve pipe is arranged in vestibule unshakable in one's determination;

First is set on the high sleeve pipes of two zero sequence current mutual inductors (4) (44) through self sleeve pipe (33) with second sample rate current mutual inductor (3) side by side; The 3rd sample rate current mutual inductor (3) is positioned at the side of these two sample rate current mutual inductors (3) away from zero sequence current mutual inductor (4), and is pressed on these two sample rate current mutual inductors (3) on the zero sequence current mutual inductor (4).

2. current sampling device according to claim 1; It is characterized in that: said four sleeve pipes comprise two short sleeve pipes (43) and two high sleeve pipes (44); Said short sleeve pipe (43) is lower than zero sequence current mutual inductor insulation shell (41), and said short sleeve pipe (43) and high sleeve pipe (44) are provided with at interval.

3. current sampling device according to claim 1; It is characterized in that: first and second sample rate current mutual inductor (3) are at its side away from zero sequence current mutual inductor (4); Respectively be provided with the positive stop lug boss (35) of a protrusion, and be combined into draw-in groove of formation; Said the 3rd sample rate current mutual inductor (3) is embedded in this draw-in groove.

4. current sampling device according to claim 1 is characterized in that: said three sample rate current mutual inductors (3) are lined up isosceles triangle.

5. current sampling device according to claim 1 is characterized in that: said iron core and coil are fixed in the corresponding storage tank through the plastic packaging mode.