CN105977965A - Low voltage phase commutation device - Google Patents
Low voltage phase commutation device Download PDFInfo
- Publication number
- CN105977965A CN105977965A CN201610302284.9A CN201610302284A CN105977965A CN 105977965 A CN105977965 A CN 105977965A CN 201610302284 A CN201610302284 A CN 201610302284A CN 105977965 A CN105977965 A CN 105977965A
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- phase
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- control unit
- display screen
- switch
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- 239000002184 metal Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 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 low voltage phase commutation device. The device includes a housing, and a three-phase data display screen, a manual phase commutation switch, a currently connected phase display screen, an input output wiring terminal and a mode selecting switch arranged on the surface of the housing. The housing is also provided with an input phase data detecting mechanism, a comparator, a master control unit and a switching mechanism. The input phase data detecting mechanism detects data of three phases separately and the output terminal of the input phase data detecting mechanism is connected with the three phase data display screen and is connected to the master control unit through the comparator. The input terminal in the input output wiring terminal is connected with the output terminal through the switching mechanism. A controller of the switching mechanism is connected with the master control unit and the manual phase commutation switch through the mode selecting switch. The output terminal of the master control unit is also connected with the currently connected phase display screen. According to the invention, data of the three phases is display on the housing at the same time. A field operator can choose the optimal phase for switching operation accurately, so that device operation safety is improved.
Description
Technical field
The present invention relates to a kind of low pressure commutation device.
Background technology
Single-phase electricity consumption three-phase and four-line supply line be easy to occur that three-phase current or voltage magnitude are inconsistent
Phenomenon, when difference in magnitude exceedes prescribed limit, is three-phase imbalance, and the electric energy loss of circuit can be caused to increase
Add, the electric energy loss increase of distribution transformer, distribution exert oneself minimizing, distribution transforming produces zero-sequence current, and affects
The safe operation of electrical equipment；Phase-change switch is to switch by the dress of another biphase power supply when there is three-phase imbalance
Putting, current phase-change switch only shows the current data connecting phase, and site operation people cannot when manual operation
Know the most biphase data, can only randomly choose, it is possible to selected phase there is also bigger difference in magnitude, in short-term
In need to carry out secondary switching, it is possible in time operation affects the safe operation of electrical equipment.
Summary of the invention
The technical problem to be solved in the present invention is that existing phase-change switch only shows the current data connecting phase, on-the-spot
Operator can only randomly choose the most biphase when manual operation, causes secondary may being needed at short notice to switch
Problem.
The present invention is achieved through the following technical solutions:
A kind of low pressure commutation device, including housing, and be arranged at surface of shell three-phase data display screen,
Manual phase-change switch, current phase display screen, input and output binding post and the mode selection switch of connecting, described
Housing is additionally provided with input phase data testing agency, comparator, main control unit and switching mechanism, described input
Phase data testing agency detects three-phase data respectively, and its outfan connects three-phase data display screen, and through comparing
Device connects main control unit, and the input terminal in described input and output binding post connects outfan through switching mechanism
Son, the controller of described switching mechanism connects main control unit and manual phase-change switch respectively through mode selection switch,
Described main control unit outfan is also connected with currently connecting phase display screen, and described display screen (4) is provided with translucent cover,
Be provided with in netted metal level in described translucent cover, the mesh diameter of described metal level be 0.1 millimeter to 0.12
Millimeter, the adjoining cells spacing of described metal level is 0.01 millimeter to 0.02 millimeter.
The further scheme of the present invention is, described input phase data testing agency includes current sensor and voltage
Sensor.
The further scheme of the present invention is, described switching mechanism includes relay switch K1 and relay switch K2,
The coil terminals of described relay switch K1 and relay switch K2 connects main control unit respectively through mode selection switch
Outfan and manual phase-change switch, normally-closed contact and the normally opened contact of described relay switch K1 connect input respectively
The A phase of input terminal and B phase in output wiring terminal, the normally opened contact of described relay switch K2 and normally closed
Contact connects C phase and the movable contact of relay switch K1 of input terminal in input and output binding post, institute respectively
The movable contact stating relay switch K2 connects lead-out terminal in input and output binding post.
The further scheme of the present invention is, described main control unit is single-chip microcomputer.
Present invention advantage compared with prior art is:
One, three-phase data being simultaneously displayed on housing, site operation people can accurately select most suitable phase
Switch over operation, improve the safety that equipment runs；
Two, by comparator to each phase data and benchmark time compare after send to main control unit, reduce main
The data processing amount of control unit, improves response speed, shortens the response time automatically switched, improves further
The safety that equipment runs；
Three, use two relay switchs to carry out commutation operation, reduce the action frequency of each relay switch, prolong
Long life, reduce using single three contact switch frequent movements fragile the causing cannot the wind of commutation in time
Danger.
Four, the setting of metal level, it is ensured that the display effect of display screen, it is to avoid outside heavy current impact display
Screen display, uses mesh diameter scope and the mesh distance range of this metal level so that shield effectiveness is best.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of switching mechanism.
Detailed description of the invention
A kind of low pressure commutation device as shown in Figure 1, including housing 1, and is arranged at the three of housing 1 surface
Phase data display screen 2, manual phase-change switch 3, current connection phase display screen 4, input and output binding post 5
With mode selection switch 6, mode selection switch 6 is commutator, is additionally provided with and includes electric current in described housing 1
Input phase data testing agency, comparator, main control unit and the switching mechanism of sensor and voltage sensor,
Described main control unit is single-chip microcomputer, and described input phase data testing agency detects three-phase data respectively, its output
End connects three-phase data display screen 2, and connects main control unit, described input and output binding post 5 through comparator
In input terminal connect lead-out terminal through switching mechanism, the controller of described switching mechanism leaves through model selection
Closing 6 and connect main control unit and manual phase-change switch 3 respectively, described main control unit outfan is also connected with currently connecting
Phase display screen 4.Described display screen (4) is provided with translucent cover, is provided with in netted metal in described translucent cover
Layer, the mesh diameter of described metal level is 0.1 millimeter to 0.12 millimeter, between the adjoining cells of described metal level
Distance is 0.01 millimeter to 0.02 millimeter.
As in figure 2 it is shown, described switching mechanism includes relay switch K1 and relay switch K2, described relay is opened
Close K1 and relay switch K2 coil terminals through mode selection switch 6 connects respectively main control unit outfan with
Manual phase-change switch 3, the normally-closed contact of described relay switch K1 and normally opened contact connect input and output respectively and connect
The A phase of input terminal and B phase, the normally opened contact of described relay switch K2 and normally-closed contact in line terminals 5
Connect C phase and the movable contact of relay switch K1 of input terminal in input and output binding post 5 respectively, described
The movable contact of relay switch K2 connects lead-out terminal in input and output binding post 5；Manual phase-change switch 3 wraps
Include three groups respectively corresponding A phase, B phase, C be connected the press button of state, wherein A phase press button connects
Time logical, relay switch K1 and the coil losing electricity of relay switch K2, when B phase press button is connected, relay is opened
Close K1 coil and obtain electric, relay switch K2 coil losing electricity, when C phase press button is connected, relay switch K2
Coil obtain electric.
Claims (4)
1. a low pressure commutation device, it is characterised in that: include housing (1), and be arranged at housing (1)
The three-phase data display screen (2) on surface, manual phase-change switch (3), the current phase display screen (4), defeated of connecting
Entering output wiring terminal (5) and mode selection switch (6), described housing is additionally provided with the input number of phases in (1)
According to testing agency, comparator, main control unit and switching mechanism, described input phase data testing agency examines respectively
Surveying three-phase data, its outfan connects three-phase data display screen (2), and connects main control unit through comparator,
Input terminal in described input and output binding post (5) connects lead-out terminal, described switching through switching mechanism
The controller of mechanism connects main control unit and manual phase-change switch (3), institute respectively through mode selection switch (6)
Stating main control unit outfan to be also connected with currently connecting phase display screen (4), described display screen (4) is provided with transparent
Cover, be provided with in netted metal level in described translucent cover, the mesh diameter of described metal level be 0.1 millimeter extremely
0.12 millimeter, the adjoining cells spacing of described metal level is 0.01 millimeter to 0.02 millimeter.
2. a kind of low pressure commutation device as claimed in claim 1, it is characterised in that: described input phase data
Testing agency includes current sensor and voltage sensor.
3. a kind of low pressure commutation device as claimed in claim 1, it is characterised in that: described switching mechanism bag
Include relay switch K1 and relay switch K2, the coil terminals warp of described relay switch K1 and relay switch K2
Mode selection switch (6) connects main control unit outfan and manual phase-change switch (3) respectively, and described relay is opened
The normally-closed contact and the normally opened contact that close K1 connect the A of input terminal in input and output binding post (5) respectively
Mutually with B phase, normally opened contact and the normally-closed contact of described relay switch K2 connect input and output binding post respectively
(5) the C phase of input terminal and the movable contact of relay switch K1, the movable contact of described relay switch K2 in
Connect lead-out terminal in input and output binding post (5).
4. a kind of low pressure commutation device as claimed in claim 1, it is characterised in that: described main control unit is monolithic
Machine.
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 true CN105977965A (en) | 2016-09-28 |
| CN105977965B CN105977965B (en) | 2018-12-28 |
Family
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105977965B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224412A (en) * | 2018-11-23 | 2020-06-02 | 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090393A (en) * | 1993-01-21 | 1994-08-03 | 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 |
| 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 |
| CN204068280U (en) * | 2014-03-05 | 2014-12-31 | 贾继莹 | The commutation device of three-phase load autobalance |
| 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 |
| 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 |
-
2016
- 2016-05-09 CN CN201610302284.9A patent/CN105977965B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090393A (en) * | 1993-01-21 | 1994-08-03 | 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 |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224412A (en) * | 2018-11-23 | 2020-06-02 | 中车唐山机车车辆有限公司 | Micro-rail traffic power supply system, balancing device and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105977965B (en) | 2018-12-28 |
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