CN2181791Y - Soft starting explosion-proof lighting controller - Google Patents
Soft starting explosion-proof lighting controller Download PDFInfo
- Publication number
- CN2181791Y CN2181791Y CN 94225386 CN94225386U CN2181791Y CN 2181791 Y CN2181791 Y CN 2181791Y CN 94225386 CN94225386 CN 94225386 CN 94225386 U CN94225386 U CN 94225386U CN 2181791 Y CN2181791 Y CN 2181791Y
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- circuit
- explosion
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- utility
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Abstract
The utility model relates to explosion-proof electric equipment used for petrochemical industries or other explosive environments, particularly an explosion-proof lighting controller used in the petrochemical industries or other explosive environments for incandescent lamps, iodine tungsten lamps, etc. with resistive load. The utility model is composed of an explosion-proof casing and a circuit, wherein, the circuit portion comprises a hand-operated triggering device, a control circuit, an antijamming circuit, an output circuit formed by bidirectional controllable silicon and a supply circuit of a DC power source. The utility model is characterized in that the control circuit is composed of a timing pulse generator, an intelligence triggering control chip NSR1680, etc. The utility model has functions of adjustable output voltage, soft start, gradual extinguishment, etc. The utility model has the advantages of simple structure, safety, low cost and small size, and can extend life time of lamps.
Description
The utility model relates to the electrical apparatus for explosive atmospheres that uses in petroleum chemical industry or other explosive atmosphere, the explosion-proof light controller of incandescent lamp, the load of iodine-tungsten lamp constant resistance in the particularly above-mentioned environment.
Existing like product generally adopts flameproof enclosure by explosion-proof needs owing to considering, mechanical switch in the shell is isolated from the outside out, and the equipment heaviness, volume is big.Existing explosion-proof type electronic switch, though be the shortcoming that the utility model patent of CN2046296U has overcome the flame proof mechanical switch as notification number, function singleness does not have functions such as soft start, impulse current is very big during unlatching, easily causes light fixture to damage.Some lighting controllers that possess soft start function adopt single-chip microcomputer or multi-disc digital circuit mostly, complex structure, and poor reliability, the cost height generally is unsuitable for explosive atmosphere and uses.
The purpose of this utility model provides a kind of possess soft start function, Adjustable Output Voltage joint, simple in structure, soft start type explosion-proof light controller that cost is low.
The utility model is made up of flameproof enclosure and circuit, circuit part comprises output circuit, control circuit, direct-current power supply circuit and manual initiating device etc., wherein output circuit comprises anti-jamming circuit and bidirectional triode thyristor etc., direct-current power supply circuit partly is made of step-down rectifier part and voltage regulation filtering, be connected on the AC power two ends, it is characterized in that control circuit comprises: (a) by a timing pulse generator (IC
1) soft starting circuit that constitutes, be connected with manual initiating device, the delay pulse of certain width can take place after being triggered; (b) by an intelligent trigger control chip NSR1680(IC
3) trigger control circuit that constitutes, the setting termination of this chip has an adjustable resistance (VR), the soft start input links to each other with the output of soft starting circuit, and output extremely links to each other with the control of bidirectional triode thyristor, a synchronous signal input end and an AC power sample resistance (R
5) and filter capacitor (C
3) be connected.
When manual initiating device moves, the timing pulse generator (IC in the soft starting circuit
1) triggered the delay pulse that its output can be exported certain width NSR1680 integrated package (IC in the control circuit
3) input, make it export the trigger impulse that a string phase angle increases gradually, start the bidirectional triode thyristor conducting, realize soft start.Regulate the trigger impulse phase angle of exporting when adjustable resistance (VR) can change the NSR1680 stable state, the angle of flow during control bidirectional triode thyristor operate as normal is realized buck functionality, regulates output voltage.
For realizing the function of gradually putting out of the present utility model, can establish one and gradually put out circuit, it is by a timing pulse generator (IC
2) constitute, its input is connected with another manual initiating device, and output is connected with the input that gradually puts out of NSR1680, IC after the manual initiating device action
2Delay pulse that can a certain width of output, control NSR1680 gradually puts out input, makes it export the trigger impulse that a string phase angle reduces gradually at output, turn-offs bidirectional triode thyristor gradually, realizes gradually putting out.
Manual initiating device can adopt by start button (S
1, S
2) and Hall element (HC
1, HC
2) form that constitutes, be connected with load resistance (R between Hall component output and the DC power supply
1, R
2); The manual initiating device that can also adopt sensitive switch or form by tongue tube and magnetic head.
Timing pulse generator (IC
1, IC
2) can adopt the U175M integrated package, its input links to each other with the Hall element output, and is connected with by resistance and electric capacity (R
3, C
1And R
4, C
2) the RC timing circuit that constitutes.
The utility model reliability and safety anti-explosive performance are good, to the load non-impact current, the output voltage of switch is controlled at below the 220V at line voltage during up to 280V, can prolong bulb life, also have simple in structure, volume is little, in light weight, operating maintenance convenient, low cost and other advantages.
Fig. 1 is circuit theory diagrams of the present utility model.
The utility model is described in further detail below in conjunction with drawings and Examples.
As Fig. 1, manual initiating device is by start button S
1, S
2And model is the Hall element HC of DN838
1, HC
2Constitute, between Hall element output and DC power supply, be connected to load resistance R
1, R
2Soft starting circuit is the ic chip of U175M by model
1And R
3, C
1Constitute; Gradually put out circuit by the U175M ic chip
2And R
4, C
2Constitute; Circuits for triggering comprise that model is the ic chip of NSR1680
3, adjustable resistance VR, work indication LED, exchange sample resistance R
5And filter capacitor C
3Output circuit is by bidirectional triode thyristor T, anti-interference element L
1, L
2, C
5, C
6And pressure cell RV constitutes; Direct-current power supply circuit comprises R
6, D
1The step-down rectifier part and the C that constitute
4, D
2The voltage regulation filtering part that constitutes.
Press S
1, the button bottom magnet is near Hall element HC
1, make its conducting, trigger HC
1, at HC
1Output (3 pin) can produce the delay pulse of certain width, control IC
3Soft start input (2 pin), make IC
3Trigger impulse in that a string phase angle of output (7 pin) output increases gradually starts the slow conducting of T, realizes soft start.
Press S
2After, HC
2Conducting triggers IC
2, the delay pulse at its output (3 pin) output certain width enters IC
3gradually put out input (3 pin), make IC
3Export the trigger impulse that a string phase angle reduces gradually, turn-off T gradually, realize gradually putting out control.
Be connected to IC by adjusting
3Set the adjustable resistance VR of end (4 pin), can control IC
3The maximum phase angle of output pulse has promptly been regulated maximum output voltage.
All circuit bank is contained on the circuit board, and encapsulates with a flameproof enclosure.Button S is being installed on the cap of encapsulation process
1, S
2And LED, for the usefulness of operation and indicating operating status, nominal parameter is alternating voltage 220V, electric current 20A.
Claims (4)
1, a kind of soft start type explosion-proof light controller, form by flameproof enclosure and circuit, its circuit is partly to be made of output circuit, control circuit, direct-current power supply circuit and manual initiating device etc., wherein output circuit comprises anti-jamming circuit and bidirectional triode thyristor etc., direct-current power supply circuit is connected on the AC power two ends, comprise step-down rectifier part and voltage regulation filtering part, it is characterized in that control circuit is by constituting with the lower part:
(a) soft starting circuit that constitutes by a timing pulse generator, its input is connected with manual initiating device;
(b) trigger control circuit that constitutes by an intelligent trigger control chip NSR1680, the setting termination of this chip has an adjustable resistance, the soft start input is connected with the output of soft starting circuit, output is connected with the control utmost point of bidirectional triode thyristor, and synchronous signal input end is connected with AC power sample resistance and filter capacitor.
2, explosion-proof light controller according to claim 1, it is characterized in that also being provided with in the control circuit by what a timing pulse generator constituted and gradually put out circuit, its input is connected with another manual initiating device, and output is connected with the input that gradually puts out of control chip NSR1680.
3, explosion-proof light controller according to claim 1 and 2, it is characterized in that said soft starting circuit and the timing pulse generator that gradually puts out in the circuit all adopt the U175M integrated package, each integrated package all is connected with a RC timing circuit that is made of resistance and electric capacity.
4, explosion-proof light controller according to claim 3 is characterized in that said manual initiating device is made up of start button and Hall element, also is connected with load resistance between Hall component output and the DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225386 CN2181791Y (en) | 1994-02-23 | 1994-02-23 | Soft starting explosion-proof lighting controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225386 CN2181791Y (en) | 1994-02-23 | 1994-02-23 | Soft starting explosion-proof lighting controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2181791Y true CN2181791Y (en) | 1994-11-02 |
Family
ID=33838590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94225386 Expired - Fee Related CN2181791Y (en) | 1994-02-23 | 1994-02-23 | Soft starting explosion-proof lighting controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2181791Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396301A (en) * | 2009-02-20 | 2012-03-28 | 奥尔加控股有限公司 | System for controlling electrical equipment units |
-
1994
- 1994-02-23 CN CN 94225386 patent/CN2181791Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396301A (en) * | 2009-02-20 | 2012-03-28 | 奥尔加控股有限公司 | System for controlling electrical equipment units |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| CF01 | Termination of patent right due to non-payment of annual fee |