CN110233586A - A kind of control circuit and control device that power is electrically separated - Google Patents
A kind of control circuit and control device that power is electrically separated Download PDFInfo
- Publication number
- CN110233586A CN110233586A CN201910550553.7A CN201910550553A CN110233586A CN 110233586 A CN110233586 A CN 110233586A CN 201910550553 A CN201910550553 A CN 201910550553A CN 110233586 A CN110233586 A CN 110233586A
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- China
- Prior art keywords
- isolating transformer
- electrically separated
- control circuit
- control
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
Abstract
The present invention relates to electric automatization control field more particularly to a kind of control circuits and control device that power is electrically separated, comprising: breaker, the input terminal of breaker connect the first power end, and the first power end provides the first supply voltage；Isolating transformer, the primary coil of isolating transformer and the output end of breaker connect, and isolating transformer is for the first supply voltage to be isolated, with decompression processing for second source voltage；Switching power circuit, the secondary coil of the input terminal connection isolating transformer of switching power circuit, switching power circuit are used to the alternating current of second source voltage being converted to direct current；First kind load, the output end of the input terminal connection switch power circuit of first kind load.The beneficial effects of the present invention are: isolating transformer and switching power circuit are connected in existing control circuit, changes operation voltage, avoids operation Danger Electric shock risk, reduces harmonics of inverter interference, and the strong and weak electrically separated wiring of route reduces the interference of route.
Description
Technical field
The present invention relates to electric automatization control field more particularly to a kind of control circuit that power is electrically separated and control dresses
It sets.
Background technique
Since entry into 21 century, earth-shaking variation is had occurred in our country, and economic development has welcome spring, raw
Environment living is greatly improved, and electric automatization has also gone on booming road from rise.
Electric automatization plays not in the progress of Chinese national economy and modern science and technology as a kind of basic technology
Negligible effect.Electric automatization is built upon on the basis of strong and weak electricity combination, is automatic technology and computer technology
Perfect combination.China should be under the fast development of sophisticated technologies, and the application and design constantly brought forth new ideas to electric automatization push away
Dynamic electric automatization is constantly progressive towards core competitiveness, electrical intelligentized development trend, final to promote holding for China's economy
The raising of supervention exhibition and international competitiveness.
Operation voltage in existing control cabinet is alternating current 220V, there is Danger Electric shock risk, and existing control circuit, which is not done, is isolated,
Power supply has the harmonic wave interference that has of frequency converter, and in the same wire casing, signal transmission is held for forceful electric power and light current in existing control circuit
Vulnerable to interference, equipment normal operation is influenced.
Summary of the invention
The purpose of invention is, provides a kind of control circuit and control device that power is electrically separated, solves the above technology and ask
Topic.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of control circuit that power is electrically separated characterized by comprising
One breaker, the input terminal of the breaker connect one first power end, and first power end provides one first
Supply voltage；
One isolating transformer, the primary coil of the isolating transformer are connect with the output end of the breaker, it is described every
It is used to for first supply voltage being isolated from transformer, with decompression processing for a second source voltage；
One switching power circuit, the input terminal of the switching power circuit connect the secondary coil of the isolating transformer,
The switching power circuit is used to the alternating current of the second source voltage being converted to direct current；
The input terminal of a plurality of first kind loads, each first kind load connects the output of the switching power circuit
End.
Preferably, the control circuit further includes a plurality of frequency converter control units, each frequency converter control unit
It is connected between first power end and the load of the second class, each frequency converter control unit is for regulating and controlling the control electricity
The frequency on road is loaded with output to second class.
Preferably, first supply voltage is set as 230V.
Preferably, the second source voltage is set as 24V.
A kind of control device that power is electrically separated, which is characterized in that using the electrically separated control electricity of power described above
Road, the control device include:
One vulnerabilities scan portion, is set to the top of the control device；
One heavy-current control portion, is set to the lower part of the control device；
One isolating transformer is set between the heavy-current control portion and the vulnerabilities scan portion, the isolating transformer
For the heavy-current control portion to be isolated with the vulnerabilities scan portion.
Preferably, the voltage in the vulnerabilities scan portion is set as direct current 24V.
Preferably, the voltage in the heavy-current control portion is set as exchange 380V.
The beneficial effect of technical solution of the present invention is: isolating transformer and switch are connected in existing control circuit
Power circuit changes operation voltage, avoids operation Danger Electric shock risk, reduces frequency converter control unit harmonic wave interference, route strong and weak electricity
Separation wiring, reduces the interference of route.
Detailed description of the invention
Fig. 1 is a kind of circuit connection diagram of the electrically separated control circuit of the power of specific embodiment of the invention；
Fig. 2 is a kind of structural schematic diagram of the electrically separated control device of the power of specific embodiment of the invention；
Breaker 1；First power end 11；Isolating transformer 2；Primary coil 21；Secondary coil 22；Switching power circuit 3；
First kind load 4；Frequency converter control unit 5；Frequency converter chip 6；Control device 7；Vulnerabilities scan portion 71；Heavy-current control portion 72；
Motor 8；Contactor 9；Electrothermal relay 10.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
In existing technology, conventional control device only passes through the control that exchange AC380V voltage carries out control circuit, operation
Voltage is generally the route for exchanging AC380V control device control circuit and sensor while in a wire casing, and control circuit is strong
Volt circuit and weak volt circuit are not done and are isolated.
As shown in Figure 1, a kind of control circuit that power is electrically separated, wherein include:
One breaker 1, the input terminal of breaker 1 connect one first power end 11, and the first power end 11 provides one first electricity
Source voltage；
The primary coil of one isolating transformer 2, isolating transformer 2 is connect with the output end of breaker 1, isolating transformer 2
For the first supply voltage to be isolated, with decompression processing for a second source voltage；
One switching power circuit 3, the secondary coil of the input terminal connection isolating transformer 2 of switching power circuit 3, switch electricity
Source circuit 3 is used to the alternating current of second source voltage being converted to direct current；
A plurality of first kind loads 4, the output end of the input terminal connection switch power circuit 3 of each first kind load 4.
In above-mentioned technical proposal, as shown in Figure 1, control circuit adds an isolating transformer 2, the primary of isolating transformer 2
Coil 21 is connect with the output end of breaker 1, and isolating transformer 2 is for the first supply voltage 380V to be isolated, with decompression
Processing is a second source voltage 24V；The secondary coil 22 of the input terminal connection isolating transformer 2 of switching power circuit 3, switch
Power circuit 3 is used to be converted in the alternating current of second source voltage direct current, increases isolating transformer 2 in control circuit, changes
Become second source voltage, i.e. operation voltage, avoids operation Danger Electric shock risk.
Specifically, isolating transformer 2 is a kind of voltage conversion circuit, main action is decompression, is widely used in
Modern electronic product.Essence is exactly an oscillating circuit, and the mode of this converting electrical energy is not applied only to power circuit, at it
Its circuit application is also very universal, such as backlight circuit, the fluorescent lamp of liquid crystal display.Isolating transformer 2 has high-efficient, steady
Property it is good, small in size the advantages that, specifically, dropping to 24V by voltage is operated using isolating transformer 2 in the present invention by 380V and avoiding touching
It is electric dangerous.
Specifically, as shown in Figure 1, first kind load 4 can be set to blower, central controller, pressure transmitter etc.,
The supply voltage of a plurality of first kind loads 4 is all direct current 24V within the scope of safe voltage.
In a kind of preferably embodiment, control circuit further includes a plurality of frequency converter control units 5, each frequency converter control
Unit 5 processed is connected between the first power end and the load of the second class, and each frequency converter control unit 5 is for regulating and controlling control circuit
Frequency is loaded with output to the second class.
Specifically, the load of the second class is set as a plurality of motor 8.
It further, include: a breaker 1 in a frequency conversion control unit 5, the input terminal of breaker connects the first power supply
End, the first power end provide one first supply voltage, and the first supply voltage is exchange 380V；One frequency converter chip 6, frequency converter core
The output end of the input terminal connection breaker of piece 6, the ground terminal of frequency converter chip 51 connect ground terminal；One motor 8, motor
The output end of 8 input terminal connection frequency converter chip, the output end of motor 8 connect ground terminal.
Further, control circuit further includes a relay control unit, and relay control unit includes: a breaker 1, is broken
The input terminal of road device connects the first power end, and the first power end provides one first supply voltage, and the first supply voltage is exchange
380V；One contactor 9, the output end of the input terminal connection breaker of contactor；One electrothermal relay 10, the input of electrothermal relay 10
The output end of end connection contactor 9；One motor 8, the output end of the input terminal connection electrothermal relay of motor 8, motor 8
Output end connects ground terminal.
In a kind of preferably embodiment, the first supply voltage is set as 380V.
In a kind of preferably embodiment, second source voltage is set as 24V.
A kind of control device that power is electrically separated, which is characterized in that using the electrically separated control circuit of above-mentioned power, control
Device 7 processed includes:
One vulnerabilities scan portion 71, is set to the top of control device 7；
One heavy-current control portion 72, is set to the lower part of control device 7；
One isolating transformer 2, is set between heavy-current control portion 72 and vulnerabilities scan portion 71, isolating transformer 2 for pair
Heavy-current control portion 72 is isolated with vulnerabilities scan portion 71.
In a kind of preferably embodiment, the voltage in vulnerabilities scan portion 71 is set as direct current 24V.
In a kind of preferably embodiment, the voltage in heavy-current control portion 72 is set as exchange 380V.
Specifically, as shown in Fig. 2, not doing strong and weak electricity separation in existing technology in control circuit, forceful electric power and light current are same
One wire casing, signal transmission are easy to be interfered, and influence equipment normal operation, will solve this problem in the present invention, by control electricity
Road progress is strong and weak electrically separated, and control device 7 includes:
One vulnerabilities scan portion 71, is set to the top of control device 7；One heavy-current control portion 72, is set to control device 7
Lower part；One isolating transformer 2, is set between heavy-current control portion 72 and vulnerabilities scan portion 71, and isolating transformer 2 is used for forceful electric power
Control unit 72 is isolated with vulnerabilities scan portion 71.The voltage in vulnerabilities scan portion 71 is set as direct current 24V, heavy-current control portion 72
Voltage is set as exchange 380V, and the technical program separates strong and weak electricity, reduces the interference of route.
The beneficial effect of technical solution of the present invention is: connecting isolating transformer 2 in existing control circuit and opens
Powered-down source circuit 3 changes operation voltage, avoids operation Danger Electric shock risk, reduces 5 harmonic wave interference of frequency converter control unit, route is strong
Light current separation wiring, reduces the interference of route.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (7)
1. a kind of control circuit that power is electrically separated characterized by comprising
One breaker, the input terminal of the breaker connect one first power end, and first power end provides one first power supply
Voltage；
One isolating transformer, the primary coil of the isolating transformer are connect with the output end of the breaker, and the isolation becomes
Depressor is for first supply voltage to be isolated, with decompression processing for a second source voltage；
One switching power circuit, the input terminal of the switching power circuit connects the secondary coil of the isolating transformer, described
Switching power circuit is used to the alternating current of the second source voltage being converted to direct current；
The input terminal of a plurality of first kind loads, each first kind load connects the output end of the switching power circuit.
2. strong and weak electrically separated control circuit according to claim 1, which is characterized in that the control circuit further includes plural number
A frequency converter control unit, each frequency converter control unit are connected between first power end and the load of the second class,
Each frequency converter control unit is loaded for regulating and controlling the frequency of the control circuit with output to second class.
3. strong and weak electrically separated control circuit according to claim 1, which is characterized in that first supply voltage is set as
230V。
4. strong and weak electrically separated control circuit according to claim 1, which is characterized in that the second source voltage is set as
24V。
5. a kind of control device that power is electrically separated, which is characterized in that using strong described in the claims 1-4 any one
The control circuit of light current separation, the control device include:
One vulnerabilities scan portion, is set to the top of the control device；
One heavy-current control portion, is set to the lower part of the control device；
One isolating transformer is set between the heavy-current control portion and the vulnerabilities scan portion, and the isolating transformer is used for
The heavy-current control portion is isolated with the vulnerabilities scan portion.
6. strong and weak electrically separated control circuit according to claim 5, which is characterized in that the voltage in the vulnerabilities scan portion is set
It is set to direct current 24V.
7. strong and weak electrically separated control circuit according to claim 5, which is characterized in that the voltage in the heavy-current control portion is set
It is set to exchange 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550553.7A CN110233586A (en) | 2019-06-24 | 2019-06-24 | A kind of control circuit and control device that power is electrically separated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550553.7A CN110233586A (en) | 2019-06-24 | 2019-06-24 | A kind of control circuit and control device that power is electrically separated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110233586A true CN110233586A (en) | 2019-09-13 |
Family
ID=67857297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910550553.7A Pending CN110233586A (en) | 2019-06-24 | 2019-06-24 | A kind of control circuit and control device that power is electrically separated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110233586A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201795575U (en) * | 2010-07-29 | 2011-04-13 | 成都红光电气有限公司 | Energy-saving system of central air conditioner |
| CN204082507U (en) * | 2014-02-14 | 2015-01-07 | 潘天银 | Residual neat recovering system constant temperature control circuit |
| CN206894250U (en) * | 2017-06-29 | 2018-01-16 | 威海职业学院 | A kind of strong and weak electricity isolating device |
-
2019
- 2019-06-24 CN CN201910550553.7A patent/CN110233586A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201795575U (en) * | 2010-07-29 | 2011-04-13 | 成都红光电气有限公司 | Energy-saving system of central air conditioner |
| CN204082507U (en) * | 2014-02-14 | 2015-01-07 | 潘天银 | Residual neat recovering system constant temperature control circuit |
| CN206894250U (en) * | 2017-06-29 | 2018-01-16 | 威海职业学院 | A kind of strong and weak electricity isolating device |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190913 |
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| RJ01 | Rejection of invention patent application after publication |