CN204315380U - A kind of open-close type current transformer - Google Patents
A kind of open-close type current transformer Download PDFInfo
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- CN204315380U CN204315380U CN201420741448.4U CN201420741448U CN204315380U CN 204315380 U CN204315380 U CN 204315380U CN 201420741448 U CN201420741448 U CN 201420741448U CN 204315380 U CN204315380 U CN 204315380U
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Abstract
A kind of open-close type current transformer, comprise pair of separated for small one and large one two-part separation iron core (a, b), be arranged on respectively independent, corresponding small one and large one two frame-type plastics protective cases (c, d) in, size plastics protective case is respectively equipped with bottom (e, f), current sample coil (g) to be located on large iron core and to have epoxy resin integral to encapsulate, sampled signal cable is drawn, size protective case by jointed shaft, (i) in renovating, shape is hinged, another side is provided with snap close (k) and is locked by two protective cases; The little bottom of described little protective case is provided with arcuate bombing leaf (h) with little separation between iron core.Compared with existing open-close type instrument transformer, instrument transformer of the present utility model carries locking mechanism, fixes without the need to screw or steel band, and instrument of can exempting from fast is installed.Possess dustproof and waterproof ability, can directly use out of doors, avoid the problem such as filth, corrosion in Long-Time Service process, stability is high.
Description
Technical field
The utility model relates to a kind of open-close type current transformer of outdoor use.
Background technology
In demand Side Management, need some automatic monitoring equipment, these monitoring equipments often need to measure the electric current of power circuit.Adopt the current transformer of open-close type to gather current signal to complete under not power-off continues to flow situation, greatly facilitate installation.Current transformer conventional is at present generally indoor type, do not possess functions of waterproof and dustproof, adopt more and be screwed or the mode of steel band secured core, still convenient not when not only installing, and Long-Time Service produces the problems affect accuracies of measurement, particularly portable set such as corrosion and becomes particularly outstanding when needing to use out of doors.
The patent No. is that the Chinese patent of ZL00210445.8 discloses a kind of open-close type current transformer, it adopts the way arranging protective cover outside box outside to improve protective capacities, but the method Problems existing is: cost is high and increase volume, all fixing therefore still needs use lock screw secured core because two is separated iron core, and require very high to the cooperation of the contact-making surface being separated iron core, add the difficulty of processing.
Summary of the invention
Technical problem to be solved in the utility model, be just to provide a kind of can automatic blocking there is the open-close type current transformer of water-proof function, can be directly installed on outdoor circuit and use, and the low volume of cost is little, can not corrosion handling ease.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of open-close type current transformer, comprise pair of separated for small one and large one two-part separation iron core a, b, be arranged on independence respectively, small one and large one corresponding two frame-type plastics protective case c, in d, size plastics protective case c, d is respectively equipped with bottom e, f, current sample coil g to be located on large iron core a and to have epoxy resin integral to encapsulate, sampled signal cable is drawn, described size protective case while be hinged in renovating shape by jointed shaft i, another side is provided with snap close k and is locked by two protective cases, it is characterized in that: the little bottom f of described little protective case d is provided with arcuate bombing leaf h with little separation between iron core b.
The cross sectional shape of described arcuate bombing leaf h is: a long Rectangular Spring sheet, two ends bend the elastic edge that an obtuse angle forms opening in the same way, the spacing of two elastic edge bending starting points is less than described little separation iron core b length, and the base of arcuate bombing leaf h props up bottom, opening direction towards little separation iron core b.So, closed configuration lower spring sheet is separated iron core by two and tightly presses to together, and the end of little separation iron core b is compressed by the opening elastic edge of arcuate bombing leaf h, meets the magnetic flux that iron core sensor current signal is necessary.
Connect with jointed shaft between two protective cases and realize folding, two protective cases lock by snap close when closing up on protective case, can make up the mismatch error between two core sections to a certain extent, reduce core section and coordinate requirement to reduce processing request; Solve in shackle designs needs to stay fit clearance and iron core must contradiction completely between close-fitting simultaneously.
On the basis of the above, the utility model can also improve further:
With ultrasonic bonding between described protective case and bottom, prevent its vapour that leaks;
Devise O type silica gel ring j for sealing in the face that closes up of protective case, owing to can compress O type silica gel ring when protective case closes up, therefore iron core and external environment condition can be isolated by O type silica gel ring.
Described current sample coil g is H-frame coil, is enclosed within two arms of U-shaped large separation iron core a, then loads large protective case c together and fix with epoxy resin encapsulated, cover bottom 1e; After little separation iron core b loads little protective case d, arcuate bombing leaf h is installed again, covers bottom f; The large protective case c assembled, little protective case d connect with jointed shaft i to be made it rotate to realize folding; What O type silica gel ring j was arranged on little protective case d closes up in the seal groove in face, has suitable compression when protective case closes up; Protective case closes up rear dependence snap close k and maintains locking.
The utility model is designed to movable by being separated one of them of iron core, and utilizes a spring leaf to substitute lock screw to compress iron core, the snap close secured core of self can be utilized in installation without the need to extra instrument.Another advantage that this design brings is can to use completely a very little O RunddichtringO to complete protected working, instead of oversheath, is conducive to reducing costs reduction volume.Well meet the use of portable set and the demand of outdoor installation, its high-grade protective characteristic makes instrument transformer more stable in Long-Time Service.
Beneficial effect: compared with existing open-close type instrument transformer, instrument transformer of the present utility model carries locking mechanism, fixes without the need to screw or steel band, and instrument of can exempting from fast is installed.Possess dustproof and waterproof ability, can directly use out of doors, avoid the problem such as filth, corrosion in Long-Time Service process, stability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is sealed structural representation of the present utility model;
Fig. 3 is buckle structure schematic diagram of the present utility model;
Fig. 4 is arcuate bombing leaf operating diagram of the present utility model.
Embodiment
As shown in Figure 1, self-locking water proof type open-close type current transformer of the present utility model, comprise pair of separated for small one and large one two-part separation iron core a, b, be arranged on independently corresponding small one and large one plastics protective case c respectively, in d, size plastics protective case c, d is respectively equipped with bottom e, f, current sample coil g to be located on large iron core a and to have epoxy resin integral to encapsulate, sampled signal cable is drawn, described size protective case while be hinged in renovating shape by jointed shaft i, another side is provided with snap close k and is locked by two protective cases, the little bottom f of little protective case d is provided with arcuate bombing leaf h with little separation between iron core b.
Current sample coil g adopts enamelled wire coiling on H-frame to form, and H-frame endoporus is square with core section dimensional fits; Two current sample coil g are equally enclosed within two arms of U-shaped large separation iron core a respectively, then load large protective case c together; The current sampling signal of current sample coil g is drawn through the string holes on large protective case c by signal cable; With the fixing large separation iron core a of epoxy resin encapsulated, two current sample coil g and signal cable, cover large bottom e.
After little separation iron core b loads little protective case d, arcuate bombing leaf h is installed again, between little bottom f and little protective case d, adopts ultrasonic bonding to enter to prevent water vapour; The large protective case c assembled, little protective case d connect with jointed shaft i to be made it rotate to realize folding; What O type silica gel ring j was arranged on little protective case d closes up in the seal groove in face, has suitable compression, be isolated from the outside by the iron core of inside when protective case closes up; Protective case closes up rear dependence snap close k and maintains locking, and snap close k is designed with through wires hole, lead sealing line and lead sealing can be used if desired by whole current transformer seal, prevent from illegally opening.
Fixedly separated iron core a is separated iron core b with activity and tightly presses to together by instrument transformer arcuate bombing leaf h under closed configuration, is fitted in the cross section of two iron cores, and can keep laminating closely in certain mechanical oscillation situation.
As shown in Figure 2, under instrument transformer closes up situation, O type silica gel ring j will be compressed, and is isolated from the outside by the iron core of inside.
As shown in Figure 3, under instrument transformer closes up situation, snap close k can lock two protective cases, coordinates lead sealing by whole current transformer seal, to prevent from illegally opening with lead sealing line through the through wires hole on snap close k.
As shown in Figure 4, under instrument transformer closes up situation, movable be separated iron core b to vertical arrow direction and oppress arcuate bombing leaf h and be out of shape to the oblique direction of arrow, arcuate bombing leaf h produces a reaction force and fixedly separated iron core a is separated iron core b tightly presses to together with movable.
Claims (3)
1. an open-close type current transformer, comprise pair of separated for small one and large one two-part separation iron core (a, b), be arranged on independence respectively, small one and large one corresponding two plastics protective case (c, d) in, current sample coil (g) is located at large iron core (a) and goes up and have epoxy resin integral to encapsulate, sampled signal cable is drawn, described size plastics protective case while be (i) hinged in renovating shape by jointed shaft, another side is provided with snap close (k) and is locked by two protective cases, it is characterized in that: described size plastics protective case (c, d) bottom (e is respectively equipped with for frame-type, f), the little bottom (f) of described little protective case (d) is provided with arcuate bombing leaf (h) with little separation between iron core (b).
2. open-close type current transformer according to claim 1, it is characterized in that: the cross sectional shape of described arcuate bombing leaf (h) is: a long Rectangular Spring sheet, two ends bend the elastic edge that an obtuse angle forms opening in the same way, the spacing of two elastic edge bending starting points is less than described little separation iron core (b) length, and the base of arcuate bombing leaf (h) props up bottom, opening direction towards little separation iron core (b).
3. open-close type current transformer according to claim 2, is characterized in that: be ultrasonic welding structure between described protective case and bottom, and two described protective cases close up face and are provided with O type silica gel ring (j) for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741448.4U CN204315380U (en) | 2014-12-02 | 2014-12-02 | A kind of open-close type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741448.4U CN204315380U (en) | 2014-12-02 | 2014-12-02 | A kind of open-close type current transformer |
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| Publication Number | Publication Date |
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| CN204315380U true CN204315380U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420741448.4U Active CN204315380U (en) | 2014-12-02 | 2014-12-02 | A kind of open-close type current transformer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405623A (en) * | 2015-11-20 | 2016-03-16 | 国网山东省电力公司电力科学研究院 | Open type transformer |
| CN105469967A (en) * | 2016-01-06 | 2016-04-06 | 浙江天际互感器有限公司 | Medium-voltage outdoor open-close type current transformer |
| CN106291043A (en) * | 2015-06-01 | 2017-01-04 | 浙江江材能源科技有限公司 | A kind of open-type combination sensor |
| CN106847469A (en) * | 2017-03-22 | 2017-06-13 | 济南铂晶电子科技有限公司 | A kind of waterproof Open Type Electric Current Mutual Inductor and encapsulating method |
| TWI609614B (en) * | 2016-07-15 | 2017-12-21 | 光寶電子（廣州）有限公司 | Mechanism with openable cover |
| CN107924759A (en) * | 2015-09-03 | 2018-04-17 | 西门子公司 | Measurement is with active the part unit and measurement converter of converter |
| CN113593814A (en) * | 2021-06-04 | 2021-11-02 | 山东铂晶智能科技有限公司 | Open-type current transformer and manufacturing method thereof |
| CN115327184A (en) * | 2022-10-17 | 2022-11-11 | 广东电网有限责任公司东莞供电局 | Mobile electricity consumption monitoring device with anti-theft function |
-
2014
- 2014-12-02 CN CN201420741448.4U patent/CN204315380U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291043A (en) * | 2015-06-01 | 2017-01-04 | 浙江江材能源科技有限公司 | A kind of open-type combination sensor |
| CN107924759A (en) * | 2015-09-03 | 2018-04-17 | 西门子公司 | Measurement is with active the part unit and measurement converter of converter |
| CN107924759B (en) * | 2015-09-03 | 2019-09-13 | 西门子公司 | The active part unit and measurement converter of measurement converter |
| CN105405623A (en) * | 2015-11-20 | 2016-03-16 | 国网山东省电力公司电力科学研究院 | Open type transformer |
| CN105469967A (en) * | 2016-01-06 | 2016-04-06 | 浙江天际互感器有限公司 | Medium-voltage outdoor open-close type current transformer |
| CN105469967B (en) * | 2016-01-06 | 2018-01-16 | 浙江天际互感器有限公司 | Outdoor open-close type current transformer is pressed in one kind |
| TWI609614B (en) * | 2016-07-15 | 2017-12-21 | 光寶電子（廣州）有限公司 | Mechanism with openable cover |
| CN106847469A (en) * | 2017-03-22 | 2017-06-13 | 济南铂晶电子科技有限公司 | A kind of waterproof Open Type Electric Current Mutual Inductor and encapsulating method |
| CN106847469B (en) * | 2017-03-22 | 2018-10-02 | 济南铂晶电子科技有限公司 | A kind of waterproof Open Type Electric Current Mutual Inductor and encapsulating method |
| CN113593814A (en) * | 2021-06-04 | 2021-11-02 | 山东铂晶智能科技有限公司 | Open-type current transformer and manufacturing method thereof |
| CN115327184A (en) * | 2022-10-17 | 2022-11-11 | 广东电网有限责任公司东莞供电局 | Mobile electricity consumption monitoring device with anti-theft function |
| CN115327184B (en) * | 2022-10-17 | 2023-09-26 | 广东电网有限责任公司东莞供电局 | Portable power consumption monitoring devices with theftproof function |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160126 Address after: 523008 Guangdong city of Dongguan province Dongcheng District East Building No. 239 Patentee after: DONGGUAN POWER SUPPLY BUREAU, GUANGDONG POWER GRID CO., LTD. Address before: 523008 Guangdong city of Dongguan province Dongcheng District East Building No. 239 Patentee before: DONGGUAN POWER SUPPLY BUREAU, GUANGDONG POWER GRID CO., LTD. Patentee before: ZHEJIANG HUACAI TECHNOLOGY CO., LTD. |