CN206894225U - Dedusting constant-current supply - Google Patents
Dedusting constant-current supply Download PDFInfo
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- CN206894225U CN206894225U CN201720556127.0U CN201720556127U CN206894225U CN 206894225 U CN206894225 U CN 206894225U CN 201720556127 U CN201720556127 U CN 201720556127U CN 206894225 U CN206894225 U CN 206894225U
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Abstract
The utility model discloses a kind of dedusting constant-current supply, including controllable silicon part, LCL resonance portions, circuit protection, transformer and electric field；The controllable silicon part is connected with the LCL resonance portions, and the circuit protection is located between the LCL resonance portions and the transformer inputs, and the transformer output end is connected with the electric field；The circuit protection includes single-phase rectification bridge and single-phase silicon-controlled, the single-phase rectification bridge input（a,b）It is connected with the transformer inputs, the negative pole of the single-phase rectification bridge output end is connected with the single-phase silicon-controlled anode, and the positive pole of the single-phase rectification bridge output end is connected with the single-phase silicon-controlled negative electrode.The utility model is provided with circuit protection, and transformer can be protected, and power supply is not afraid of output open circuit, and transformer not grow by easy burn-out, service life.
Description
Technical field
The utility model belongs to deduster technical field, more particularly, to a kind of dedusting constant-current supply.
Background technology
Power supply is one of crucial part of electric cleaner.Current electric precipitation constant-current supply have constant output current,
Not the advantages that not being afraid of output short-circuit, but there is also in place of some shortcomings.It is afraid of output open circuit due to its constant-current source characteristic, once it is defeated
Go out the secondary side high pressure that open circuit is formed to be easy to burn transformer；There is original constant-current supply transformer input primary side voltage again
It can not adjust, it is easy to input transformer primary side overtension, so as to burn constant-current source transformer.
Utility model content
The utility model is for overcome the deficiencies in the prior art, there is provided one kind is not afraid of output open circuit, transformer is not easy to burn
Dedusting constant-current supply.
To achieve these goals, the utility model uses following technical scheme：A kind of dedusting constant-current supply, including can
Control silicon part, LCL resonance portions, circuit protection, transformer and electric field；The controllable silicon part and the LCL resonant structures
Split-phase connects, and the circuit protection is located between the LCL resonance portions and the transformer inputs, and the transformer is defeated
Go out end with the electric field to be connected；The circuit protection includes single-phase rectification bridge and single-phase silicon-controlled, the single-phase rectification bridge
Input（a,b）Be connected with the transformer inputs, the negative pole of the single-phase rectification bridge output end with it is described single-phase silicon-controlled
Anode be connected, the positive pole of the single-phase rectification bridge output end is connected with the single-phase silicon-controlled negative electrode.The utility model is set
Circuit protection has been put, transformer can have been protected；It is single when open circuit suddenly in the outlet side open circuit of transformer or operation
The voltage for the input that commutating phase bridge is connected with transformer input side is more than setting value, and triggerable conducting is single-phase silicon-controlled, makes master
Loop makes major loop primary current moment become big, input transformer is once through single-phase rectification bridge and single-phase silicon-controlled composition loop
Voltage instantaneous diminishes, it is achieved thereby that the function of the too high protection of output voltage, power supply is not afraid of output open circuit, and transformer will not be burnt
It is bad, service life length.
Further, the controllable silicon part includes two single-phase silicon-controlled, this two it is single-phase silicon-controlled between parallel connected in reverse phase；Can
The size of input voltage is adjusted by adjusting the two single-phase silicon-controlled angles of flow so that the input power of power supply is adjustable, prevents from becoming
The input side overtension of depressor, voltage device are not easy to be burned out.
Further, LCL resonance portions are by multiple inductance（L1~Ln）, multiple electric capacity（C1~Cn）And the input of transformer
Hold the resonant tank formed, the electric capacity（C1~Cn）Terminals and described be connected positioned at middle inductance；So that major loop
It is more stable.
In summary, the utility model has advantages below：There is provided circuit protection, and transformer can be protected
Shield；When open circuit suddenly in the outlet side open circuit of transformer or operation, the function of the too high protection of output voltage is realized, power supply is not afraid of
Output open circuit, transformer will not be burned, service life length.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
In order that those skilled in the art are better understood from the utility model, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, clear, complete description is carried out to the technical scheme in the embodiment of the utility model.
As shown in figure 1, a kind of dedusting constant-current supply, including controllable silicon part 1, LCL resonance portions 2, circuit protection portion
Divide 3, transformer TM, electric field 4 and controller；The controller is prior art, such as PLC, be will not be repeated here；It is described can
Control silicon part 1 is connected with the LCL resonance portions 2, and the circuit protection 3 is located at the LCL resonance portions 2 and the change
Between depressor TM inputs, the transformer TM output ends connect a damping resistance R1, the high-voltage switch gear of damping resistance R1 connections one
Cabinet 5, high-tension switch cabinet 5 are connected with the electric field 4, to realize the connection of transformer TM output ends and electric field 4；It is specifically, described
Circuit protection 3 includes single-phase rectification bridge 31 and single-phase silicon-controlled SCR1, the input of single-phase rectification bridge 31（a,b）With institute
The input for stating transformer TM is connected, the negative pole of the output end of single-phase rectification bridge 31 and the anode of the single-phase silicon-controlled SCR1
It is connected, the positive pole of the output end of single-phase rectification bridge 31 is connected with the negative electrode of the single-phase silicon-controlled SCR1；When transformer TM is defeated
When going out unexpected open circuit in side open circuit or operation, input a, b that single-phase rectification bridge 31 is connected with transformer input side voltage are big
In setting value, the single-phase silicon-controlled SCR1 of conducting is can trigger, major loop is formed through single-phase rectification bridge 31 and single-phase silicon-controlled SCR1
Loop, major loop primary current moment is set to become big, the primary voltage moment of input transformer diminishes；When controller detect it is this
During situation, main circuit power is cut off, display electric voltage over press protection warning function, the principle is prior art；So as to effectively realize
The function of the too high protection of output voltage, protection transformer TM will not be burned.
Further, the controllable silicon part 1 includes two single-phase silicon-controlled SCR1, anti-between the two single-phase silicon-controlled SCR1
It is in parallel, the size of input voltage can be adjusted by the two single-phase silicon-controlled SCR1 angle of flow.
Further, the LCL resonance portions 2 are by the defeated of multiple inductance L1 ~ Ln, multiple electric capacity C1 ~ Cn and transformer
Enter the resonant tank that end is formed, draw one end positioned at middle inductance in the inductance L1 ~ Ln, respectively with the electric capacity C1 ~ Cn
Terminals be connected, improve the stability of design.
Obviously, described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments.
Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, it should all belong to the scope of the utility model protection.
Claims (3)
- A kind of 1. dedusting constant-current supply, it is characterised in that：Including controllable silicon part（1）, LCL resonance portions（2）, circuit protection Part（3）, transformer TM and electric field（4）；The controllable silicon part（1）With the LCL resonance portions（2）It is connected, the circuit Protect part（3）Located at the LCL resonance portions（2）Between the transformer TM inputs, the transformer TM output ends It is connected with the electric field；The circuit protection（3）Including single-phase rectification bridge（31）It is described single-phase with single-phase silicon-controlled SCR1 Rectifier bridge（31）Input（a,b）It is connected with the transformer TM inputs, the single-phase rectification bridge（31）The negative pole of output end It is connected with the anode of the single-phase silicon-controlled SCR1, the single-phase rectification bridge（31）The positive pole of output end with it is described single-phase silicon-controlled SCR1 negative electrode is connected.
- 2. dedusting constant-current supply according to claim 1, it is characterised in that：The controllable silicon part（1）It is single including two Phase controllable silicon SCR 1, parallel connected in reverse phase between the two single-phase silicon-controlled SCR1.
- 3. dedusting constant-current supply according to claim 1, it is characterised in that：LCL resonance portions（2）For by multiple inductance （L1~Ln）, multiple electric capacity（C1~Cn）And the resonant tank that transformer TM input is formed, the electric capacity（C1~Cn）Wiring Hold and be connected with described positioned at middle inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720556127.0U CN206894225U (en) | 2017-05-18 | 2017-05-18 | Dedusting constant-current supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720556127.0U CN206894225U (en) | 2017-05-18 | 2017-05-18 | Dedusting constant-current supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206894225U true CN206894225U (en) | 2018-01-16 |
Family
ID=61342401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720556127.0U Active CN206894225U (en) | 2017-05-18 | 2017-05-18 | Dedusting constant-current supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206894225U (en) |
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2017
- 2017-05-18 CN CN201720556127.0U patent/CN206894225U/en active Active
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