CN105977965B - A kind of low pressure commutation device - Google Patents
A kind of low pressure commutation device Download PDFInfo
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- CN105977965B CN105977965B CN201610302284.9A CN201610302284A CN105977965B CN 105977965 B CN105977965 B CN 105977965B CN 201610302284 A CN201610302284 A CN 201610302284A CN 105977965 B CN105977965 B CN 105977965B
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- 239000002184 metal Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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- H02J3/005—
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- Keying Circuit Devices (AREA)
- Relay Circuits (AREA)
Abstract
The invention discloses a kind of low pressure commutation devices, including shell, and it is set to the three-phase data display screen of surface of shell, manual phase-change switch, current connection phase display screen, input and output connecting terminal and mode selection switch, input phase data testing agency is additionally provided in the shell, comparator, main control unit and switching mechanism, three-phase data detects respectively in the input phase data testing agency, its output end connects three-phase data display screen, and main control unit is connected through comparator, input terminal in the input and output connecting terminal connects output terminal through switching mechanism, the controller of the switching mechanism is separately connected main control unit and manual phase-change switch through mode selection switch, the main control unit output end is also connected with current connection phase display screen.Three-phase data is simultaneously displayed on shell by the present invention, and site operation people can accurately select most suitable phase to switch over operation, improves the safety of equipment operation.
Description
Technical field
The present invention relates to a kind of low pressure commutation devices.
Background technique
The three-phase and four-line power supply line of the single-phase electricity consumption phenomenon inconsistent it is easy to appear three-phase current or voltage magnitude,
When difference in magnitude is more than prescribed limit, as three-phase imbalance will cause the electric energy loss increase of route, the electricity of distribution transformer
Increase can be lost, distribution power output is reduced, distribution transforming generates zero-sequence current, and influences the safe operation of electrical equipment；Phase-change switch is
Switch the device powered by another two-phase when there is three-phase imbalance, current phase-change switch only shows the number of current connection phase
The data that can not know another two-phase in manual operation according to, site operation people, can only randomly choose, it is possible to selected phase there is also
Biggish difference in magnitude needed to carry out secondary switching in the short time, it is possible to which operation influences the safe operation of electrical equipment not in time.
Summary of the invention
The technical problem to be solved by the present invention is to the data that existing phase-change switch only shows current connection phase, site operation peoples
Another two-phase can only be randomly choosed in manual operation, leads to the problem of may needing secondary switching in a short time.
The invention is realized by the following technical scheme:
A kind of low pressure commutation device, including shell, and it is set to the three-phase data display screen of surface of shell, manual commutation
Switch currently connects phase display screen, input and output connecting terminal and mode selection switch, is additionally provided with the input number of phases in the shell
According to testing agency, comparator, main control unit and switching mechanism, three-phase data detects respectively in the input phase data testing agency,
Its output end connects three-phase data display screen, and connects main control unit through comparator, defeated in the input and output connecting terminal
Enter terminal and connect output terminal through switching mechanism, the controller of the switching mechanism is separately connected master control list through mode selection switch
First and manual phase-change switch, the main control unit output end are also connected with current connection phase display screen, and the display screen (4) is equipped with
Translucent cover, interior be equipped with of the translucent cover is in netted metal layer, and the mesh diameter of the metal layer is 0.1 millimeter to 0.12 milli
Rice, the adjacent net distance between borehole of the metal layer are 0.01 millimeter to 0.02 millimeter.
Further scheme of the invention is that the input phase data testing agency includes current sensor and voltage sensor
Device.
Further scheme of the invention is that the switching mechanism includes relay switch K1 and relay switch K2, the relay
The coil terminals of switch K1 and relay switch K2 are separately connected main control unit output end through mode selection switch and manual commutation is opened
It closes, the normally-closed contact and normally opened contact of the relay switch K1 are separately connected the A phase of input terminal in input and output connecting terminal
With B phase, the normally opened contact and normally-closed contact of the relay switch K2 are separately connected the C of input terminal in input and output connecting terminal
Mutually and the movable contact of relay switch K1, the movable contact of the relay switch K2 connect output terminal in input and output connecting terminal.
Further scheme of the invention is that the main control unit is single-chip microcontroller.
The advantages of the present invention over the prior art are that:
One, three-phase data is simultaneously displayed on shell, site operation people can accurately select most suitable phase to cut
Operation is changed, the safety of equipment operation is improved；
Two, by comparator to each phase data with benchmark when be compared after be sent to main control unit, reduce main control unit
Data processing amount, improve reaction speed, shorten the reaction time of automatic switchover, further increase equipment operation safety；
Three, commutation operation is carried out using two relay switch, reduces the action frequency of each relay switch, extended and use the longevity
Life, reduction use the single three contact switch frequent movement risk easy to damage for leading to not timely commutation.
Four, the setting of metal layer guarantees the display effect of display screen, avoids external heavy current from influencing display screen and shows,
Using the mesh diameter range and mesh distance range of the metal layer, so that shield effectiveness is best.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of switching mechanism.
Specific embodiment
A kind of low pressure commutation device as shown in Figure 1, including shell 1, and be set to 1 surface of shell three-phase data it is aobvious
Display screen 2, manual phase-change switch 3, current connection phase display screen 4, input and output connecting terminal 5 and mode selection switch 6, mode choosing
Selecting switch 6 is commutator, is additionally provided in the shell 1 and detects including the input phase data of current sensor and voltage sensor
Mechanism, comparator, main control unit and switching mechanism, the main control unit are single-chip microcontroller, the input phase data testing agency point
Not Jian Ce three-phase data, output end connects three-phase data display screen 2, and connects main control unit through comparator, and the input is defeated
The input terminal in connecting terminal 5 connects output terminal through switching mechanism out, and the controller of the switching mechanism is through model selection
Switch 6 is separately connected main control unit and manual phase-change switch 3, and the main control unit output end is also connected with current connection phase display screen
4.The display screen (4) is equipped with translucent cover, and being equipped in the translucent cover is in netted metal layer, and the mesh of the metal layer is straight
Diameter is 0.1 millimeter to 0.12 millimeter, and the adjacent net distance between borehole of the metal layer is 0.01 millimeter to 0.02 millimeter.
As shown in Fig. 2, the switching mechanism includes relay switch K1 and relay switch K2, the relay switch K1 and relay
The coil terminals of switch K2 are separately connected main control unit output end and manual phase-change switch 3, the relay through mode selection switch 6
The normally-closed contact and normally opened contact of switch K1 is separately connected the A phase and B phase of input terminal in input and output connecting terminal 5, described
The normally opened contact and normally-closed contact of relay switch K2 is separately connected the C phase and relay of input terminal in input and output connecting terminal 5
The movable contact of the movable contact of switch K1, the relay switch K2 connects output terminal in input and output connecting terminal 5；Manual commutation
Switch 3 includes three groups, and corresponding A phase, B phase, C are connected the button switch of state, when wherein A phase button switch is connected, relay respectively
The coil losing electricity of switch K1 and relay switch K2, when B phase button switch is connected, relay switch K1 coil obtains electric, relay switch K2
Coil losing electricity, when C phase button switch is connected, the coil of relay switch K2 obtains electric.
Claims (2)
1. a kind of low pressure commutation device, it is characterised in that: including shell (1), and be set to the three-phase data on shell (1) surface
Display screen (2), manual phase-change switch (3), current connection phase display screen (4), input and output connecting terminal (5) and model selection are opened
It closes (6), input phase data testing agency, comparator, main control unit and switching mechanism is additionally provided in the shell (1), it is described defeated
Enter phase data testing agency and detect three-phase data respectively, output end connects three-phase data display screen (2), and connects through comparator
Main control unit, the input terminal in the input and output connecting terminal (5) connect output terminal, the switching machine through switching mechanism
The controller of structure is separately connected main control unit and manual phase-change switch (3), the main control unit output through mode selection switch (6)
End is also connected with current connection phase display screen (4), and the current connection phase display screen (4) is equipped with translucent cover, in the translucent cover
Equipped with being in netted metal layer, the mesh diameter of the metal layer is 0.1 millimeter to 0.12 millimeter, the adjacent net of the metal layer
Distance between borehole is 0.01 millimeter to 0.02 millimeter；The input phase data testing agency includes current sensor and voltage sensor
Device；The main control unit is single-chip microcontroller.
2. a kind of low pressure commutation device as described in claim 1, it is characterised in that: the switching mechanism includes relay switch K1
Master is separately connected through mode selection switch (6) with the coil terminals of relay switch K2, the relay switch K1 and relay switch K2
Control unit output end and manual phase-change switch (3), the normally-closed contact and normally opened contact of the relay switch K1 are separately connected input
The A phase and B phase of input terminal in output wiring terminal (5), the normally opened contact and normally-closed contact of the relay switch K2 connect respectively
Connect the movable contact of the C phase of input terminal and relay switch K1 in input and output connecting terminal (5), the dynamic touching of the relay switch K2
Output terminal in point connection input and output connecting terminal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302284.9A CN105977965B (en) | 2016-05-09 | 2016-05-09 | A kind of low pressure commutation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610302284.9A CN105977965B (en) | 2016-05-09 | 2016-05-09 | A kind of low pressure commutation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105977965A CN105977965A (en) | 2016-09-28 |
| CN105977965B true CN105977965B (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610302284.9A Active CN105977965B (en) | 2016-05-09 | 2016-05-09 | A kind of low pressure commutation device |
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| CN (1) | CN105977965B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224412B (en) * | 2018-11-23 | 2021-11-16 | 中车唐山机车车辆有限公司 | Micro-rail traffic power supply system, balancing device and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205565725U (en) * | 2016-05-09 | 2016-09-07 | 国网浙江省电力公司丽水供电公司 | Low pressure commutation device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030669C (en) * | 1993-01-21 | 1996-01-10 | 卢纪畅 | Digital three-phase wattmeter |
| CN2872403Y (en) * | 2006-03-01 | 2007-02-21 | 珠海威瀚科技发展有限公司 | Electric display unit |
| CN204068280U (en) * | 2014-03-05 | 2014-12-31 | 贾继莹 | The commutation device of three-phase load autobalance |
| CN203950726U (en) * | 2014-07-01 | 2014-11-19 | 国家电网公司 | A kind of four enter one goes out formula phase-change switch |
| CN204243777U (en) * | 2014-12-25 | 2015-04-01 | 武汉华大鄂电电气设备有限公司 | Carry the phase-change switch of phase sequence recognition function |
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2016
- 2016-05-09 CN CN201610302284.9A patent/CN105977965B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205565725U (en) * | 2016-05-09 | 2016-09-07 | 国网浙江省电力公司丽水供电公司 | Low pressure commutation device |
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| CN105977965A (en) | 2016-09-28 |
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