CN219659957U - Intrinsic safety type explosion-proof lighting control circuit system for high-risk places - Google Patents
Intrinsic safety type explosion-proof lighting control circuit system for high-risk places Download PDFInfo
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- CN219659957U CN219659957U CN202321213083.3U CN202321213083U CN219659957U CN 219659957 U CN219659957 U CN 219659957U CN 202321213083 U CN202321213083 U CN 202321213083U CN 219659957 U CN219659957 U CN 219659957U
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- 239000003990 capacitor Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000010892 electric spark Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Abstract
The utility model discloses an intrinsically safe anti-explosion lighting control circuit system for a high-risk place, which comprises an intrinsically safe battery module, a lighting load module, an intrinsically safe circuit module, a switch key module and an intelligent control module, wherein the switch key module is connected with the switch key module; limiting the output current and voltage of the intrinsically safe battery module within an explosion-proof safety range through an output current limiting unit and an output voltage limiting unit, so as to realize first re-protection; limiting the current in the lighting load module within an explosion-proof safety range through the first current limiting unit and the second current limiting unit, so as to realize second protection; the current in the intrinsic safety circuit module is limited in an explosion-proof safety range through the third current limiting unit and the fourth current limiting unit, so that third re-protection is realized; the intrinsic safety type anti-explosion lighting control circuit system for the high-risk places accords with the ia protection level requirement through triple protection, and solves the technical problem that the prior art cannot provide high-power lighting for operators in the high-risk places.
Description
Technical Field
The utility model relates to the technical field of explosion-proof lighting equipment, in particular to an intrinsically safe explosion-proof lighting control circuit system for high-risk places.
Background
At present, the intrinsically safe explosion-proof lighting equipment is widely applied to dangerous places such as petroleum, chemical industry, natural gas and the like containing explosive mixtures. The intrinsic safety is classified into "ia", "ib" and "ic" protection classes according to the standard, and the protection classes are from high to low. The intrinsic safety circuit of the 'ia' protection level generates no electric spark after 2 counting faults, the intrinsic safety circuit of the 'ib' protection level generates no electric spark after 1 counting fault, and the intrinsic safety circuit of the 'ic' protection level generates no electric spark without any counting faults.
The existing intrinsically safe explosion-proof lighting equipment is low in explosion-proof level or small in lighting power, and cannot provide high-power lighting for operators in high-risk places.
Disclosure of Invention
The utility model aims to provide an intrinsically safe anti-explosion lighting control circuit system for a high-risk place, which solves the technical problem that the prior art cannot provide high-power lighting for operators in the high-risk place.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the intrinsically safe anti-explosion lighting control circuit system for the high-risk places comprises an intrinsically safe battery module, a lighting load module, an intrinsically safe circuit module, a switch key module and an intelligent control module, wherein the intrinsically safe battery module comprises a battery, an output current limiting unit and an output voltage limiting unit, the output current limiting unit is used for limiting the output current of the intrinsically safe battery module, the output voltage limiting unit is used for limiting the output voltage of the intrinsically safe battery module, the positive end of the lighting load module is connected with the output end of the intrinsically safe battery module, the lighting load module comprises a lighting load, a first current limiting unit connected with the lighting load in series and a second current limiting unit connected with the lighting load in series, the first end of the control element is connected with the negative end of the lighting load module through a third current limiting unit and a fourth current limiting unit, the second end of the control element is grounded, the switch key module is used for inputting user control instructions, and the intelligent control module is used for outputting pulse width modulation control signals to the control end of the control element according to the user control instructions input by the switch key module so as to control the on-off of the control element.
Preferably, the intrinsically safe explosion-proof lighting control circuit system for the high-risk place further comprises a charging module and an electric quantity signal module, wherein the electric quantity signal module is used for collecting electric quantity data of a battery in the intrinsically safe battery module, and the intelligent control module controls the charging module to charge the battery when the electric quantity data of the battery is lower than a preset value.
Preferably, the output current limiting unit includes a fuse F4, the output voltage limiting unit includes a three-terminal voltage regulator U1, a triode Q7, a diode D4, a capacitor C1, a resistor R2, a resistor R14, a resistor R23, a resistor R24, and a resistor R25, the input end of the three-terminal voltage regulator U1 is connected to a 5V dc power supply, the input end of the three-terminal voltage regulator U1 is connected to the collector of the triode Q7 through the resistor R24, the emitter of the triode Q7 is grounded, the base of the triode Q7 is connected to the charging module through the resistor R23, the resistor R25 is connected between the base and the emitter of the triode Q7, the capacitor C1 is connected between the input end and the ground of the three-terminal voltage regulator U1, the input end of the three-terminal voltage regulator U1 is connected to the cathode of the diode D4, the anode of the diode D4 is sequentially connected to the positive electrode of the battery through the resistor R2 and the fuse F4, the resistor R14 is connected to the resistor R2 in parallel, and the junction point of the fuse F4 and the resistor R2 is the output end of the intrinsically safe battery module.
Preferably, the three-terminal voltage regulator U1 is of the model CJ78L05.
Preferably, the first current limiting unit adopts a fuse, the second current limiting unit adopts a current limiting resistor, the lighting load module comprises a floodlighting module and a spotlight lighting module, the floodlighting module comprises a plurality of floodlight LED lamps which are connected in parallel, each floodlight LED lamp is connected in series with a fuse and a current limiting resistor, the spotlight lighting module comprises a plurality of spotlight LED lamps, and each spotlight LED lamp is connected in series with a fuse and a current limiting resistor.
Preferably, the control element adopts a MOS tube, the third current limiting unit adopts a fuse, the fourth current limiting unit adopts a current limiting resistor, the intrinsically safe circuit module comprises a plurality of control branches connected in parallel, each control branch comprises a MOS tube, a fuse and a current limiting resistor, the drain electrode of the MOS tube is connected with the negative electrode end of the illumination load module through the current limiting resistor and the fuse, the source electrode of the MOS tube is grounded, and the grid electrode of the MOS tube is connected with the intelligent control module through a resistor voltage dividing unit.
Preferably, the switch key module comprises a resistor R8, a resistor R9, a resistor R10, a resistor R44, a resistor R45, a resistor R46, a switch SW1, a switch SW2 and a switch SW3, wherein one ends of the switch SW1, the switch SW2 and the switch SW3 are grounded, the other ends of the switch SW1 are sequentially connected with a 5V direct current power supply through the resistor R8 and the resistor R46, the junction point of the resistor R8 and the resistor R46 is connected with an intelligent control module, the other ends of the switch SW2 are sequentially connected with the 5V direct current power supply through the resistor R9 and the resistor R45, the junction point of the resistor R9 and the resistor R45 is connected with the intelligent control module, the other ends of the switch SW3 are sequentially connected with the 5V direct current power supply through the resistor R10 and the resistor R44, and the junction point of the resistor R10 and the resistor R44 are connected with the intelligent control module.
Preferably, the intelligent control module comprises a control chip U2 and peripheral circuits thereof.
Preferably, the control chip U2 is of the type MM32F0010A1T.
Preferably, the electric quantity signal module comprises a plurality of LED lamps, the anode of each LED lamp is respectively connected with the intelligent control module through a resistor, and the cathode of each LED lamp is grounded.
The beneficial technical effects of the utility model are as follows: the utility model relates to an intrinsic safety type explosion-proof lighting control circuit system for a high-risk place, which comprises an intrinsic safety battery module, a lighting load module, an intrinsic safety circuit module, a switch key module and an intelligent control module, wherein the switch key module is connected with the switch key module; the intrinsic safety battery module comprises a battery, an output current limiting unit and an output voltage limiting unit, and the output current and the output voltage of the intrinsic safety battery module are limited in an explosion-proof safety range through the output current limiting unit and the output voltage limiting unit, so that the first re-protection is realized; secondly, the lighting load module comprises a lighting load, a first current limiting unit connected with the lighting load in series and a second current limiting unit connected with the lighting load in series, and the current in the lighting load module is limited in an explosion-proof safety range through the first current limiting unit and the second current limiting unit, so that second protection is realized; finally, the intrinsic safety circuit module comprises a control element, wherein the first end of the control element is connected with the negative electrode end of the illumination load module through a third current limiting unit and a fourth current limiting unit, and the current in the intrinsic safety circuit module is limited in an explosion-proof safety range through the third current limiting unit and the fourth current limiting unit, so that third re-protection is realized; the intrinsically safe explosion-proof lighting control circuit system for the high-risk places meets the international standard 'ia' protection level requirement through triple protection, high-power lighting can be provided for the high-risk places, electric sparks cannot be generated by the circuit after 2 counting faults occur even if the whole circuit is exposed to the specified flammable and explosive substance environment, and the technical problem that the prior art cannot provide high-power lighting for operators in the high-risk places is solved.
Drawings
FIG. 1 is a block diagram of the intrinsically safe, explosion-proof lighting control circuitry for high-risk sites of the present utility model;
FIG. 2 is a schematic circuit diagram of an intrinsically safe battery module, a lighting load module, an intrinsically safe circuit module, and a charging module of the present utility model;
FIG. 3 is a schematic circuit diagram of a switch key module according to the present utility model;
FIG. 4 is a schematic circuit diagram of the intelligent control module of the present utility model;
fig. 5 is a schematic circuit diagram of the power signal module of the present utility model.
Detailed Description
The present utility model will be further described with reference to the drawings and examples below in order to more clearly understand the objects, technical solutions and advantages of the present utility model to those skilled in the art.
As shown in fig. 1 and 2, in one embodiment of the present utility model, the intrinsically safe and explosion-proof lighting control circuitry for high-risk sites includes an intrinsically safe battery module 10, a lighting load module 20, an intrinsically safe circuit module 30, a switch button module 40, and an intelligent control module 50. The intrinsically safe battery module 10 supplies power for the working operation of the whole control circuit system and has the functions of current limiting and voltage limiting. The intrinsically safe battery module 10 includes a battery BT1, an output current limiting unit for limiting an output current of the intrinsically safe battery module 10, and an output voltage limiting unit for limiting an output voltage of the intrinsically safe battery module 10. The positive terminal of the lighting load module 20 is connected to the output terminal of the intrinsically safe battery module 10, and the lighting load module 20 includes a lighting load, a first current limiting unit connected in series with the lighting load, and a second current limiting unit connected in series with the lighting load. The intrinsically safe circuit module 30 comprises a control element, a first end of which is connected to the negative terminal of the lighting load module 20 via a third current limiting unit, a fourth current limiting unit, and a second end of which is grounded. The switch key module 40 is used for inputting a user control command, and the intelligent control module 50 is used for outputting a pulse width modulation control signal to the control end of the control element according to the user control command input by the switch key module 40 so as to control the on-off of the control element.
As shown in fig. 1, the intrinsically safe explosion-proof lighting control circuitry for high-risk sites further includes a charging module 70 and a power signal module 60, wherein the power signal module 60 is configured to collect power data of the battery in the intrinsically safe battery module 10, and the intelligent control module 50 controls the charging module 70 to charge the battery when the power data of the battery is lower than a preset value.
As shown in fig. 2, the output current limiting unit includes a fuse F4, the output voltage limiting unit includes a three-terminal voltage regulator U1, a triode Q7, a diode D4, a capacitor C1, a resistor R2, a resistor R14, a resistor R23, a resistor R24, and a resistor R25, the input end of the three-terminal voltage regulator U1 is connected to a 5V dc power supply, the input end of the three-terminal voltage regulator U1 is connected to the collector of the triode Q7 through the resistor R24, the emitter of the triode Q7 is grounded, the base of the triode Q7 is connected to the charging module through the resistor R23, the resistor R25 is connected between the base and the emitter of the triode Q7, the capacitor C1 is connected between the input end and the ground of the three-terminal voltage regulator U1, the input end of the three-terminal voltage regulator U1 is connected to the cathode of the diode D4, the anode of the diode D4 is sequentially connected to the positive electrode of the battery through the resistor R2 and the fuse F4, the resistor R14 is connected in parallel to the resistor R2, and the junction point of the fuse F4 and the resistor R2 is the output end of the intrinsically safe battery module. In this embodiment, the three-terminal voltage regulator U1 is of the model CJ78L05; in other embodiments, other types of three-terminal regulators may be used, and the utility model is not limited.
The current limiting function is realized by the fuse, and when overcurrent occurs, the fuse F4 is fused, so that circuit protection is realized. In the embodiment, the three-terminal voltage stabilizer and the diode are utilized to realize the voltage limiting function, the three-terminal voltage stabilizer U1 outputs a stable voltage, and the output voltage of the intrinsically safe battery module is limited in an explosion-proof safety range by matching with the voltage drop characteristic of the diode D4.
As shown in fig. 2, the lighting load module 20 includes a flood lighting module and a spot lighting module. The floodlight module comprises a plurality of floodlight LED lamps (LEDs 11-LEDs 16) which are connected in parallel, and each floodlight LED lamp is connected with a fuse and a current limiting resistor in series; the spotlight module comprises a plurality of spotlight LED lamps (LED 5-LED 10), and each spotlight LED lamp is connected with a fuse and a current limiting resistor in series. The embodiment realizes current limiting and overcurrent protection by using a plurality of fuses (first current limiting units) and a plurality of current limiting resistors (second current limiting units).
As shown in fig. 2, the intrinsic safety circuit module 30 includes a floodlight control unit 31 and a spotlight control unit 32. The floodlight control unit 31 comprises 3 control branches connected in parallel, each control branch comprises a MOS tube (e.g. Q11), a fuse (e.g. F20) and a current limiting resistor (e.g. R60), the drain electrode of the MOS tube is connected to the negative electrode of the floodlight lighting module through the current limiting resistor and the fuse, the source electrode of the MOS tube is grounded, and the gate electrode of the MOS tube is connected to the intelligent control module 50 through a resistor voltage dividing unit (e.g. a circuit unit consisting of R57 and R63).
Similarly, the spotlight control unit 32 also includes 3 parallel control branches, each control branch includes a MOS tube (e.g. Q10), a fuse (e.g. F19) and a current limiting resistor (e.g. R58), the drain electrode of the MOS tube is connected to the negative electrode of the spotlight module through the current limiting resistor and the fuse, the source electrode of the MOS tube is grounded, and the gate electrode of the MOS tube is connected to the intelligent control module 50 through a resistor voltage dividing unit (e.g. a circuit unit formed by R56 and R62).
In this embodiment, the MOS transistor is used as a control element to control on-off of an internal circuit of the intrinsic safety circuit module; in other embodiments, other types of control elements, such as transistors, may be used to control the switching of the internal circuitry of the intrinsically safe circuit module.
As shown in fig. 3, the switch key module 40 includes a resistor R8, a resistor R9, a resistor R10, a resistor R44, a resistor R45, a resistor R46, a switch SW1, a switch SW2 and a switch SW3, one ends of the switch SW1, the switch SW2 and the switch SW3 are grounded, the other ends of the switch SW1 are sequentially connected with a 5V dc power supply through the resistor R8 and the resistor R46, the junction point of the resistor R8 and the resistor R46 is connected with the intelligent control module 50, the other ends of the switch SW2 are sequentially connected with the 5V dc power supply through the resistor R9 and the resistor R45, the junction point of the resistor R9 and the resistor R45 is connected with the intelligent control module 50, the other ends of the switch SW3 are sequentially connected with the 5V dc power supply through the resistor R10 and the resistor R44, and the junction point of the resistor R10 and the resistor R44 are sequentially connected with the intelligent control module 50.
As shown in fig. 4, the intelligent control module 50 includes a control chip U2 with a model MM32F0010A1T and peripheral circuits thereof; in other embodiments, the control chip U2 may also be a chip of other types.
As shown in fig. 5, the power signal module 60 includes a plurality of LED lamps (LEDs 1-4), wherein the anode of each LED lamp is connected to the intelligent control module through a resistor, and the cathode of each LED lamp is grounded.
The foregoing is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims shall fall within the scope of the present utility model.
Claims (10)
1. An intrinsically safe, explosion-proof lighting control circuitry for high-risk locations, the intrinsically safe, explosion-proof lighting control circuitry for high-risk locations comprising:
the intrinsic safety battery module comprises a battery, an output current limiting unit and an output voltage limiting unit, wherein the output current limiting unit is used for limiting the output current of the intrinsic safety battery module, and the output voltage limiting unit is used for limiting the output voltage of the intrinsic safety battery module;
a lighting load module, the positive end of which is connected with the output end of the intrinsic safety battery module, wherein the lighting load module comprises a lighting load, a first current limiting unit connected with the lighting load in series and a second current limiting unit connected with the lighting load in series;
the intrinsic safety circuit module comprises a control element, wherein a first end of the control element is connected with the negative electrode end of the lighting load module through a third current limiting unit and a fourth current limiting unit, and a second end of the control element is grounded;
the switch key module is used for inputting a user control instruction;
and the intelligent control module is used for outputting a pulse width modulation control signal to the control end of the control element according to a user control instruction input by the switch key module so as to control the on-off of the control element.
2. The intrinsically-safe, explosion-proof lighting control circuitry for high-risk sites of claim 1, further including a charging module and an electrical quantity signal module, the electrical quantity signal module configured to collect electrical quantity data of a battery in the intrinsically-safe battery module, the intelligent control module configured to control the charging module to charge the battery when the electrical quantity data of the battery is below a predetermined value.
3. The intrinsically safe and explosion-proof lighting control circuitry for high-risk sites of claim 2, wherein the output current limiting unit comprises a fuse F4, the output current limiting unit comprises a three-terminal voltage regulator U1, a triode Q7, a diode D4, a capacitor C1, a resistor R2, a resistor R14, a resistor R23, a resistor R24 and a resistor R25, the input terminal of the three-terminal voltage regulator U1 is connected with a 5V dc power supply, the input terminal of the three-terminal voltage regulator U1 is connected with the collector of the triode Q7 through the resistor R24, the emitter of the triode Q7 is grounded, the base of the triode Q7 is connected with a charging module through the resistor R23, the resistor R25 is connected between the base and the emitter of the triode Q7, the capacitor C1 is connected between the input terminal of the three-terminal voltage regulator U1 and the ground, the input terminal of the three-terminal voltage regulator U1 is connected with the cathode of the diode D4, the anode of the diode D4 is sequentially connected with the positive electrode of the battery through the resistor R2 and the fuse F4, the resistor R14 is connected in parallel with the resistor R2 and the junction point of the fuse R2 is the intrinsically safe module.
4. An intrinsically-safe, explosion-proof lighting control circuit system for high-risk sites, according to claim 3, wherein the three-terminal regulator U1 is model CJ78L05.
5. The intrinsically-safe, explosion-proof lighting control circuitry for high-risk sites of claim 2, wherein the first current limiting unit is a fuse and the second current limiting unit is a current limiting resistor, the lighting load module includes a flood lighting module and a spot lighting module, the flood lighting module includes a plurality of flood LED lamps connected in parallel, each flood LED lamp is connected in series with a fuse and a current limiting resistor, the spot lighting module includes a plurality of spot LED lamps, each spot LED lamp is connected in series with a fuse and a current limiting resistor.
6. The intrinsically safe explosion-proof lighting control circuitry for high-risk sites of claim 2, wherein the control element is a MOS transistor, the third current limiting unit is a fuse, the fourth current limiting unit is a current limiting resistor, the intrinsically safe circuit module comprises a plurality of control branches connected in parallel, each control branch comprises a MOS transistor, a fuse and a current limiting resistor, the drain of the MOS transistor is connected to the negative terminal of the lighting load module through the current limiting resistor and the fuse, the source of the MOS transistor is grounded, and the gate of the MOS transistor is connected to the intelligent control module through a resistor voltage dividing unit.
7. The intrinsically safe explosion-proof lighting control circuit system for high-risk sites of claim 2, wherein the switch key module comprises a resistor R8, a resistor R9, a resistor R10, a resistor R44, a resistor R45, a resistor R46, a switch SW1, a switch SW2 and a switch SW3, one end of the switch SW1, the switch SW2 and one end of the switch SW3 are grounded, the other end of the switch SW1 is sequentially connected with a 5V direct current power supply through the resistor R8 and the resistor R46, the junction point of the resistor R8 and the resistor R46 is connected with the intelligent control module, the other end of the switch SW2 is sequentially connected with the 5V direct current power supply through the resistor R9 and the resistor R45, the junction point of the resistor R9 and the resistor R45 is connected with the intelligent control module, and the other end of the switch SW3 is sequentially connected with the 5V direct current power supply through the resistor R10 and the resistor R44, and the junction point of the resistor R44 is connected with the intelligent control module.
8. The intrinsically-safe, explosion-proof lighting control circuitry for high-risk sites of claim 2, wherein the intelligent control module includes a control chip U2 and its peripheral circuitry.
9. The intrinsically-safe, explosion-proof lighting control circuitry for high-risk sites of claim 8, wherein the control chip U2 is model MM32F0010A1T.
10. The intrinsically-safe, explosion-proof lighting control circuitry for high-risk sites of claim 2, wherein the electrical quantity signal module includes a plurality of LED lamps, the anode of each LED lamp being connected to the intelligent control module by a resistor, the cathode of each LED lamp being grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321213083.3U CN219659957U (en) | 2023-05-17 | 2023-05-17 | Intrinsic safety type explosion-proof lighting control circuit system for high-risk places |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321213083.3U CN219659957U (en) | 2023-05-17 | 2023-05-17 | Intrinsic safety type explosion-proof lighting control circuit system for high-risk places |
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| Publication Number | Publication Date |
|---|---|
| CN219659957U true CN219659957U (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321213083.3U Active CN219659957U (en) | 2023-05-17 | 2023-05-17 | Intrinsic safety type explosion-proof lighting control circuit system for high-risk places |
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| Country | Link |
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| CN (1) | CN219659957U (en) |
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2023
- 2023-05-17 CN CN202321213083.3U patent/CN219659957U/en active Active
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