CN209471165U - A kind of open-close type residual current transformer - Google Patents
A kind of open-close type residual current transformer Download PDFInfo
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- CN209471165U CN209471165U CN201920043599.5U CN201920043599U CN209471165U CN 209471165 U CN209471165 U CN 209471165U CN 201920043599 U CN201920043599 U CN 201920043599U CN 209471165 U CN209471165 U CN 209471165U
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- upper housing
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- residual current
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Abstract
The utility model relates to transformer technical field, a kind of particularly open-close type residual current transformer.The utility model discloses a kind of open-close type residual current transformers, including semiorbicular upper housing and lower case and semiorbicular upper magnetic core and lower magnetic core, it docks to form a circular ring shape shell in the both ends of the upper housing and lower case, the first end of the upper housing and lower case is mutually pivotally connected, the second end of the upper housing and lower case is detachably connected by screw, the upper magnetic core and lower magnetic core are separately positioned in upper housing and lower case, it docks to form a toroidal cores in the both ends of the upper magnetic core and lower magnetic core, the upper magnetic core and lower magnetic core are respectively equipped with winding coil, the circular ring shape shell is equipped with connecting terminal or lead-out wire, the connecting terminal or lead-out wire are connect with winding coil.The utility model is screwed fastening, and fastening is solid and reliable, and performance is stablized；And structure is simple, small in size, installation and easy maintenance, it is applied widely.
Description
Technical field
The utility model belongs to transformer technical field, more particularly to a kind of open-close type residual current transformer.
Background technique
Primary side high current is converted into secondary side low current to measure according to electromagnetic induction principle by current transformer
Instrument, current transformer are made of the magnetic core and winding coil being closed.
Residual current transformer is the detecting element of earth leakage protective device, its major function is that detection passes through transformer core
Main circuit residual current (electric shock, electric leakage etc. earth-fault currents), and the residual current of primary circuit is transformed into secondary
The output voltage in circuit.Residual current transformer is one of the component of most critical in earth leakage protective device.
The shell of existing residual current transformer is generally divided into two kinds of forms, and one is integration, another kind is opening
Formula.Integrated mutual inductor volume is big, when installation, it is necessary to cable be penetrated mutual inductor before cable laying；And once mutually
When sensor is needed repairing, dismantles or replaced, cable must just be cut, then residual current transformer is installed, then cable
Line connects, and disassembly installation is inconvenient；The mutual inductor of open type includes forcipated mutual-inductor, and volume is big, inconvenient for operation, Bu Neng
It is effectively used in narrow space.Although also occurring some open-close type residual current transformers now, existing open-close type is remaining
Current transformer the problems such as there is structure is complicated, and volume is big, and fastening intensity is inadequate.
Summary of the invention
The purpose of this utility model is to provide a kind of open-close type residual current transformers to solve above-mentioned skill
Art problem.
To achieve the above object, the technical solution adopted in the utility model are as follows: a kind of open-close type residual current transformer, packet
Include semiorbicular upper housing and lower case and semiorbicular upper magnetic core and lower magnetic core, the both ends pair of the upper housing and lower case
It connecing to form a circular ring shape shell, the first end of the upper housing and lower case is mutually pivotally connected, and the of the upper housing and lower case
Two ends are detachably connected by screw, and the upper magnetic core and lower magnetic core are separately positioned in upper housing and lower case, the upper magnetic
The both ends of core and lower magnetic core dock to form a toroidal cores, and the upper magnetic core and lower magnetic core are respectively equipped with winding coil, described
Circular ring shape shell is equipped with connecting terminal or lead-out wire, and the connecting terminal or lead-out wire are connect with winding coil.
Further, silica gel foam is equipped between the winding coil and circular ring shape shell.
Further, the second end face of the lower case is equipped with expansion nut, and the second end face of the upper housing is equipped with phase
Corresponding screw hole, the screw pass through screw hole and are spirally connected with expansion nut and the second end of upper housing and lower case is locked.
Further, the first end of the upper housing and lower case is pivotally connected by annular knurl pin axis.
Further, the lower case is equipped with wire lead slot, and the lead-out wire is fixed in wire lead slot by casting glue.
It further, further include pedestal, the pedestal is detachably arranged in lower case.
Further, the pedestal is arranged in lower case by self-tapping screw.
Further, the upper housing is made of upper cover and upper bottom case, and the lower case is made of lower cover and lower bottom case.
Further, the upper cover and lower cover pass through ultrasonic respectively and are weldingly fixed on bottom case and lower bottom case.
Further, the upper housing and lower case are made of engineering plastics.
The advantageous effects of the utility model
The utility model is screwed fastening, and fastening is solid and reliable, and performance is stablized；And structure is simple, small in size, peace
Dress and easy maintenance, using flexible is applied widely, adapts to the environment of a variety of inconvenient installations.
Detailed description of the invention
Fig. 1 is the optical cable of the utility model embodiment one；
Fig. 2 is the structural schematic diagram of the utility model embodiment one；
Fig. 3 is the structural schematic diagram at another visual angle of the utility model embodiment one；
Fig. 4 is the structural schematic diagram of the utility model embodiment two.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the present invention will be further described.
As shown in Figure 1-3, a kind of open-close type residual current transformer, including semiorbicular upper housing 1 and lower case 2 and
It docks to form a circular ring shape shell, institute in the both ends of semiorbicular upper magnetic core 31 and lower magnetic core 32, the upper housing 1 and lower case 2
The first end for stating upper housing 1 and lower case 2 is mutually pivotally connected, and the second end of the upper housing 1 and lower case 2 is removable by screw 7
Connection to be unloaded, is locked fastening using screw 7, fastens solid and reliable, performance is stablized, and it is easy to operate, and structure is simple, volume
It is small.
In this specific embodiment, upper housing 1 and lower case 2 preferably use engineering plastics, if ABS engineering plastics are made, absolutely
Edge is good and beautiful, and but it is not limited to this.
In this specific embodiment, the first end of the upper housing 1 and lower case 2 preferably passes through the pivot joint of annular knurl pin axis 8, knot
Structure is simple, it is easy to accomplish.Certainly, in other embodiments, the first end of upper housing 1 and lower case 2 can also use existing
Other articulated manners are pivotally connected, this is that those skilled in the art can realize easily, are no longer described in detail.
In this specific embodiment, the second end face of the lower case 2 is equipped with expansion nut 6, the second end of the upper housing 1
Face is equipped with corresponding screw hole, the screw 7 pass through screw hole and expansion nut 6 be spirally connected and by the second of upper housing 1 and lower case 2
End is locked.By being equipped with expansion nut 6, so that connection is stronger, it is easy to operate and easily fabricated.
The upper magnetic core 31 and lower magnetic core 32 are separately positioned in upper housing 1 and lower case 2, the upper magnetic core 31 and lower magnetic
The both ends of core 32 dock to form a toroidal cores, and the upper magnetic core 31 and lower magnetic core 32 are respectively equipped with winding coil 41 and 42,
The circular ring shape shell is equipped with connecting terminal 9, and the connecting terminal 9 is connect with winding coil 41 and 42.
In this specific embodiment, upper magnetic core 31 and lower magnetic core 32 can be made of Ferrite Material, but not limited to this.
In this specific embodiment, silica gel foam is equipped between the top and bottom and circular ring shape shell of the winding coil 41 and 42
5, for winding coil 41 and 42 and upper magnetic core 31 and lower magnetic core 32 to be fixed in circular ring shape shell, it is protected,
And insulating properties is improved, and it realizes simply, it is at low cost.
In this specific embodiment, the upper housing 1 is made of upper cover 12 and upper bottom case 11, and upper bottom case 11 is equipped with open at one end
Mounting groove, the upper magnetic core 31 and winding coil 41 be mounted in the mounting groove of bottom case 11, and upper cover 12 is solid by ultrasonic
It is scheduled on the opening of the mounting groove of bottom case 11, leakproofness and stationarity are good, and certainly, in other embodiments, upper cover 12 can also
It is fixed with usual existing other fixed forms, this is that those skilled in the art can realize easily, is no longer described in detail.
The lower case 2 is made of lower cover 22 and lower bottom case 21, and lower bottom case 21 is equipped with mounting groove open at one end, under described
Magnetic core 32 and winding coil 42 are mounted in the mounting groove of lower bottom case 21, and lower cover 22 is fixed on the peace of lower bottom case 21 by ultrasonic
The opening of tankage, leakproofness and stationarity are good, and certainly, in other embodiments, lower cover 22 can also be usually existing other
Fixed form is fixed, this is that those skilled in the art can realize easily, no longer describes in detail.
Upper housing 1 is constituted using upper cover 12 and upper bottom case 11, and lower case 2 is constituted using lower cover 22 and lower bottom case 21, is convenient for
Assembling and follow-up maintenance.
In this specific embodiment, the connecting terminal 9 is fixed on lower cover 22, convenient for assembling and is safeguarded, but unlimited
In this.
It further include pedestal 100 in this specific embodiment, the pedestal 100 is detachably arranged in lower case 1, convenient for peace
Fill the flexible utilization used.Specifically, the pedestal 100 is arranged on lower bottom case 21 by self-tapping screw 101, it is easy to accomplish,
Stability is good, at low cost.
In this specific embodiment, it is additionally provided with the U-tube respectively with the rotation connection of the first end of upper housing 1 and lower case 2
102, the connecting line between winding coil 41 and 42 is threaded through in U-tube 102, improves safety and reliability.
Embodiment two
As shown in figure 4, the difference between this embodiment and the first embodiment lies in: the connecting terminal 9 of embodiment one is substituted for and is drawn
Outlet 9 ', lead-out wire 9 ' are connect with winding coil 41 and 42, and the lower case 2 is equipped with wire lead slot (not shown), described to draw
Outlet 9 ' is fixed in wire lead slot by casting glue.
The utility model is fastened by the way that screw 7 is fixed, and fastening is solid and reliable, and performance is stablized；And structure is simple, it is small in size,
Installation and easy maintenance, using flexible is applied widely, adapts to the environment of a variety of inconvenient installations.With connecting terminal 9 and draw
The two kinds of lead-out modes of outlet 9 ', it is flexible and convenient to use.
Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered
This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details
On the utility model can be made a variety of changes, be the protection scope of the utility model.
Claims (10)
1. a kind of open-close type residual current transformer, it is characterised in that: including semiorbicular upper housing and lower case and semi-ring
The both ends of the upper magnetic core of shape and lower magnetic core, the upper housing and lower case dock to form a circular ring shape shell, the upper housing and
The first end of lower case is mutually pivotally connected, and the second end of the upper housing and lower case is detachably connected by screw, the upper magnetic
Core and lower magnetic core are separately positioned in upper housing and lower case, and the both ends of the upper magnetic core and lower magnetic core dock to form a circular ring shape
Magnetic core, the upper magnetic core and lower magnetic core are respectively equipped with winding coil, and the circular ring shape shell is equipped with connecting terminal or lead-out wire,
The connecting terminal or lead-out wire are connect with winding coil.
2. open-close type residual current transformer according to claim 1, it is characterised in that: the winding coil and circular ring shape
Silica gel foam is equipped between shell.
3. open-close type residual current transformer according to claim 1, it is characterised in that: the second end face of the lower case
Equipped with expansion nut, the second end face of the upper housing is equipped with corresponding screw hole, and the screw passes through screw hole and expansion nut
It is spirally connected and the second end of upper housing and lower case is locked.
4. open-close type residual current transformer according to claim 1, it is characterised in that: the upper housing and lower case
First end is pivotally connected by annular knurl pin axis.
5. open-close type residual current transformer according to claim 1, it is characterised in that: the lower case is equipped with lead
Slot, the lead-out wire are fixed in wire lead slot by casting glue.
6. open-close type residual current transformer according to claim 1, it is characterised in that: it further include pedestal, the pedestal
It is detachably arranged in lower case.
7. open-close type residual current transformer according to claim 6, it is characterised in that: the pedestal passes through self-tapping screw
It is arranged in lower case.
8. open-close type residual current transformer according to claim 1, it is characterised in that: the upper housing is by upper cover and upper
Bottom case is constituted, and the lower case is made of lower cover and lower bottom case.
9. open-close type residual current transformer according to claim 8, it is characterised in that: the upper cover and lower cover are led to respectively
Ultrasonic is crossed to be weldingly fixed on bottom case and lower bottom case.
10. open-close type residual current transformer according to claim 1, it is characterised in that: the upper housing and lower case
It is made of engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920043599.5U CN209471165U (en) | 2019-01-11 | 2019-01-11 | A kind of open-close type residual current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920043599.5U CN209471165U (en) | 2019-01-11 | 2019-01-11 | A kind of open-close type residual current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209471165U true CN209471165U (en) | 2019-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920043599.5U Active CN209471165U (en) | 2019-01-11 | 2019-01-11 | A kind of open-close type residual current transformer |
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| Country | Link |
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| CN (1) | CN209471165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092844A (en) * | 2021-04-07 | 2021-07-09 | 云南电网有限责任公司迪庆供电局 | Voltage and current integrated sensing device and clamping sleeve |
-
2019
- 2019-01-11 CN CN201920043599.5U patent/CN209471165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092844A (en) * | 2021-04-07 | 2021-07-09 | 云南电网有限责任公司迪庆供电局 | Voltage and current integrated sensing device and clamping sleeve |
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