CN2128396Y - Safety flame-proof dc regulated power supply made of integrated voltage-regulator - Google Patents
Safety flame-proof dc regulated power supply made of integrated voltage-regulator Download PDFInfo
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- CN2128396Y CN2128396Y CN 92230025 CN92230025U CN2128396Y CN 2128396 Y CN2128396 Y CN 2128396Y CN 92230025 CN92230025 CN 92230025 CN 92230025 U CN92230025 U CN 92230025U CN 2128396 Y CN2128396 Y CN 2128396Y
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- integrated regulator
- proof
- overcurrent protection
- power supply
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Abstract
The utility model discloses a safety explosion-proof DC regulated power supply made of an integrated voltage-regulator, which is characterized in that a semiconductor discrete component is not provided, and the safety explosion-proof DC regulated power supply made of an integrated voltage-regulator is composed of an integrated voltage-regulator, a resistor, and a capacitor. Through the maximum open-circuit voltage and the maximum short-circuit current of the integrated voltage-regulator and the limitation power supply of the resistor, the explosion-proof performance of the intrinsic safety of the power supply output can be ensured; the circuit is simple, and the safety explosion-proof DC regulated power supply made of an integrated voltage-regulator is used for the explosion-proof DC power supply used in the explosive atmosphere.
Description
The utility model proposes a kind of intrinsic safe explosion-proof D.C. regulated power supply that constitutes by integrated regulator.
The intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator is a kind of explosive atmosphere electrical apparatus for explosive atmospheres.This kind electrical apparatus for explosive atmospheres is by choose reasonable circuit and circuit parameter.Electric spark and thermal effect that circuit is produced under the malfunction of operate as normal or regulation can not be lighted explosive mixture on every side.
The intrinsic safe explosion-proof direct supply that uses is except that having resistance and electric capacity discrete component at present, also have semiconductor discrete component such as diode, triode and controllable silicon, for example: the DY1 type intrinsic safe explosion-proof D.C. regulated power supply that Shandong radio factory produces, form by diode, triode, controllable silicon, resistance and electric capacity, as shown in Figure 1.Can be divided into voltage regulation unit and protected location two big unit circuit by function, as shown in Figure 1.Voltage regulation unit is finished voltage stabilizing function, and protected location is finished pressure limiting and current-limiting function.
The shortcoming of these intrinsic safe explosion-proof D.C. regulated power supplies is: the circuit complexity, and use element many, the production debug difficulties, the cost height, volume is big, Heavy Weight, the failure rate height is not easy to working service.
The purpose of this utility model is that design a kind of no semiconductor discrete component, circuit are simple, and reliability is high, the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator.
The utility model proposes; the intrinsic safe explosion-proof D.C. regulated power supply that constitutes by integrated regulator; form by the integrated regulator of 2 adjustable overcurrent protections, 2 current-limiting resistances, 2 regulating resistors, 2 voltage reference resistance and 3 weakening filter capacitors, as shown in Figure 2.Between the input end of the integrated regulator N1 of adjustable overcurrent protection (pin 1) and the common port (pin 3) and meet weakening filter capacitor C1; between test side (pin 2) and the common port and meet weakening filter capacitor C2; between test side and the output terminal (pin 5) and meet current-limiting resistance R1; between test side and the reference edge (pin 4) and meet regulating resistor R2; between reference edge and the common port and connect voltage reference resistance R 3; between the test side of the integrated regulator N2 of adjustable overcurrent protection and the common port and meet weakening filter capacitor C3; between test side and the output terminal and meet current-limiting resistance R4; between test side and the reference edge and meet regulating resistor R5; between reference edge and the common port and connect voltage reference resistance R 6; the input end of the integrated regulator N1 of adjustable overcurrent protection and common port are 2 input terminals of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator; connect the direct supply output (as the non-voltage stabilizing direct current of rectification and filtering circuit output) of non-intrinsically safe safety anti-explosive; the input end of the integrated regulator N2 of adjustable overcurrent protection is connected with the test side of the integrated regulator N1 of adjustable overcurrent protection; the common port of the integrated regulator N1 of adjustable overcurrent protection is connected with the common port of the integrated regulator N2 of adjustable overcurrent protection; the test side of the integrated regulator N2 of adjustable overcurrent protection and common port are 2 lead-out terminals of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator, connect the load of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator.The resistance of current-limiting resistance R1 and R4 is chosen according to the Sefe antiexplosion maximum short circuit current of GB3836.4-83 regulation, and regulating resistor R2 and R5 choose according to the high open circuit voltage of the Sefe antiexplosion of GB3836.4-83 regulation.
The utility model proposes; the intrinsic safe explosion-proof D.C. regulated power supply that constitutes by integrated regulator; its principle of work is: utilize the adjustable maximum output current of integrated regulator of adjustable overcurrent protection and the performance of voltage; the high open circuit voltage and the maximum short circuit current of restriction power supply; and realize dualization, the integrated regulator N1 of adjustable overcurrent protection, current-limiting resistance R1, regulating resistor R2 by two-stage cascade; voltage reference resistance R 3, weakening filter capacitor C1 and C2 form the 1st grade of voltage stabilizing current-limiting circuit.Integrated regulator N2, current-limiting resistance R4, regulating resistor R5, voltage reference resistance R 6 and weakening filter capacitor C3 by adjustable overcurrent protection form the 2nd grade of voltage stabilizing current-limiting circuit.Every grade high open circuit voltage and maximum short-circuit current are all adjusted according to high open circuit voltage of the Sefe antiexplosion of GB3836.4-83 regulation and maximum short circuit current, and each grade voltage stabilizing current-limiting circuit all has voltage stabilizing (pressure limiting) and metering function.Arbitrarily one-level is short-circuited in two-stage, during various fault such as open circuit, all can guarantee the Sefe antiexplosion performance of power supply output.
The integrated regulator of adjustable overcurrent protection is CW200 type integrated regulator preferably, and the resistance value of voltage reference resistance R 3 and R6 is preferably 820 Ω, can certainly select other resistance value.The capacitance of weakening filter capacitor C1, C2 and C3 is preferably 0.1 μ f.Can certainly select other capacitance.The resistance value of current-limiting resistance R1 and R4 is 1.5 Ω preferably, the 1st grade and the 2nd grade of voltage stabilizing current-limiting circuit maximum short circuit current are 300mA, can certainly select other resistance value and maximum short circuit current (if maximum short circuit current is an I(unit: A), current-limiting resistance is a R(unit: Ω), and approximate satisfied (1) formula: the R=0.45/ (I) of current-limiting resistance R and maximum output current ... (1)).Regulating resistor R2 preferably selects 5.6K Ω, the high open circuit voltage of the 1st grade of voltage stabilizing current-limiting circuit is 21.7V, can certainly select other resistance value and high open circuit voltage (if high open circuit voltage is a U(unit: V), voltage reference resistance is R ' (unit: Ω), regulating resistor is R, and " (unit: Ω), regulating resistor and high open circuit voltage be approximate to satisfy (2) formula: R "=((U)/2.77-1) * R ' ... (2)).Regulating resistor R5 preferably selects 4.7K Ω, and the high open circuit voltage of the 2nd grade of voltage stabilizing current-limiting circuit is 18.6V, can certainly select other resistance value and high open circuit voltage (regulating resistor and high open circuit voltage approximate satisfy (2) formula).
The utility model is by the integrated regulator of adjustable overcurrent protection, and resistance and electric capacity constitute, and do not have semiconductor discrete component.The integrated regulator of adjustable overcurrent protection had both had voltage stabilizing function; have current limliting and pressure limiting function again; overcome existing intrinsic safe explosion-proof direct supply current limliting; the shortcoming that the pressure limiting function is finished respectively by a plurality of devices is compared with existing intrinsic safe explosion-proof power supply, and it is simple to have a circuit; volume is little; in light weight, be convenient to produce debugging, the advantage of maintenance easy to use.
Below in conjunction with embodiment and accompanying drawing thereof the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator that the utility model proposes is further described.
Fig. 1 is the DY1 type intrinsic safe explosion-proof DC-stabilized circuit figure that Shandong radio factory produces.
Fig. 2 is the intrinsic safe explosion-proof D.C. regulated power supply that the integrated regulator by adjustable overcurrent protection constitutes.
Fig. 3 is the intrinsic safe explosion-proof D.C. regulated power supply (R1=R4=1.5 Ω, R2=5.6K Ω, R5=4.7K Ω, C1=C2=C3=0.1 μ f) that the integrated regulator by the adjustable overcurrent protection of CW200 type constitutes.
Fig. 4 is the intrinsic safe explosion-proof D.C. regulated power supply (R1=R4=3 Ω, R2=7.5K Ω, R5=6.2K Ω, C1=C2=C3=0.22 μ f) that the integrated regulator by the adjustable overcurrent protection of CW200 type constitutes.
Fig. 5 is connected to load and non-intrinsic safety direct supply, the intrinsic safe explosion-proof D.C. regulated power supply that is made of the integrated regulator of adjustable overcurrent protection.
Embodiment 1:
The intrinsic safe explosion-proof D.C. regulated power supply that is made of the integrated regulator of the adjustable overcurrent protection of CW200 type as shown in Figure 3; integrated regulator N1 and N2 by the adjustable overcurrent protection of 2 CW200 types; 2 current-limiting resistance R1(R1=1.5 Ω) and R4(R4=1.5 Ω); 2 regulating resistor R2(R2=5.6K Ω) and R5(R5=4.7K Ω), 2 voltage reference resistance R 3(R2=820 Ω) and R6(R6=820 Ω) and 3 weakening filter capacitor C1, C2 and C3(C1=C2=C3=0.1 μ f) form.
Between the input end of the integrated regulator N1 of adjustable overcurrent protection (pin 1) and the common port (pin 3) and connect between weakening filter capacitor C1, test side (pin 2) and the common port and connect between weakening filter capacitor C2, test side and the output terminal (pin 5) and meet current-limiting resistance R1; between test side and the reference edge (pin 4) and meet regulating resistor R2, between reference edge and the common port and connect voltage reference resistance R 3.Between the test side of the integrated regulator N2 of adjustable overcurrent protection and the common port and meet weakening filter capacitor C3; between test side and the output terminal and meet current-limiting resistance R4; between test side and the reference edge and meet regulating resistor R5, between reference edge and the common port and connect voltage reference resistance R 6.The input end of the integrated regulator N1 of adjustable overcurrent protection and common port are 2 input terminals of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator; connect the direct supply output (as the non-voltage stabilizing direct current of rectification and filtering circuit output) of non-intrinsically safe safety anti-explosive; the input end of the integrated regulator N2 of adjustable overcurrent protection is connected with the test side of the integrated regulator N1 of adjustable overcurrent protection; the common port of the integrated regulator N1 of adjustable overcurrent protection is connected with the common port of the integrated regulator N2 of adjustable overcurrent protection; the test side of the integrated regulator N2 of adjustable overcurrent protection and common port are 2 lead-out terminals of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator, connect the load of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator.Get 21.7V according to the high open circuit voltage of GB3836.4-83.Maximum short circuit current is got 300mA.In order to guarantee the operate as normal of the 2nd grade of voltage stabilizing current-limiting circuit, the pressure drop of the 2nd grade of voltage stabilizing current-limiting circuit should be greater than 83 regulations, and therefore, the 2nd grade of voltage stabilizing current-limiting circuit is output as 18.6V.Choose R1=1.5 Ω, R2=5.6K Ω, R4=1.5 Ω, R5=4.7K Ω according to above-mentioned every grade of high open circuit voltage and maximum short circuit current and (1) formula and (2) formula.Be connected to when non-intrinsic safety direct supply after the input end and common port of integrated regulator N1 of adjustable overcurrent protection, the high open circuit voltage of the 1st grade of voltage stabilizing current-limiting circuit is 21.7V.Maximum short circuit current is 300mA, and the high open circuit voltage of the 2nd grade of voltage stabilizing current-limiting circuit is 18.6V, and maximum short circuit current is 300mA, and no matter the arbitrary level in the two-stage voltage stabilizing current-limiting circuit (but be not two-stage simultaneously) is short-circuited various faults such as open circuit.The high open circuit voltage that all can guarantee whole power supply is not more than 21.7V, and maximum short circuit current is not more than 300mA, has realized dualization, has satisfied intrinsically safe explosion proof requirement.
Embodiment 2:
As shown in Figure 4, its principle of work is fully with embodiment 1, difference is, current-limiting resistance R1 and R4, and the capacitance of the resistance value of regulating resistor R2 and R5 and C1, C2, C3 is changed into: R1=R4=3 Ω, R2=7.5K Ω, R5=6.2K Ω, C1=C2=C3=0.22 μ f.The maximum open circuit voltage of the 1st grade of voltage stabilizing current-limiting circuit is 28.1V, and maximum short circuit current is 150mA.The maximum open circuit voltage of the 2nd grade of voltage stabilizing current-limiting circuit is 23.7V, and maximum short circuit current is 150mA.
Fig. 5 the utility model proposes, the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator and the method for attachment of load and non-intrinsic safety direct supply.
Claims (2)
1, a kind of intrinsic safe explosion-proof D.C. regulated power supply that constitutes by integrated regulator.It is characterized in that:
(1) by the integrated regulator of 2 adjustable overcurrent protections, 2 current-limiting resistances, 2 regulating resistors, 2 voltage reference resistance and 3 weakening filter capacitors are formed;
(2) between the input end of the integrated regulator N1 of adjustable overcurrent protection (pin 1) and the common port (pin 3) and meet weakening filter capacitor C1, between test side (pin 2) and the common port and meet weakening filter capacitor C2, between test side and the output terminal (pin 5) and meet current-limiting resistance R1, between test side and the reference edge (pin 4) and meet regulating resistor R2, between reference edge and the common port and connect voltage reference resistance R 3;
(3) between the test side of the integrated regulator N2 of adjustable overcurrent protection and the common port and meet weakening filter capacitor C3, between test side and the output terminal and meet current-limiting resistance R4, between test side and the reference edge and meet regulating resistor R5, between reference edge and the common port and connect voltage reference resistance R 6;
(4) input end of the integrated regulator N1 of adjustable overcurrent protection and common port are 2 input terminals (connecing the output of the direct supply of non-intrinsically safe safety anti-explosive) of the intrinsic safe explosion-proof direct supply that is made of integrated regulator.The input end of the integrated regulator N2 of adjustable overcurrent protection is connected with the test side of the integrated regulator N1 of adjustable overcurrent protection; the common port of the integrated regulator N1 of adjustable overcurrent protection is connected with the common port of the integrated regulator N2 of adjustable overcurrent protection, and the test side of the integrated regulator N2 of adjustable overcurrent protection and common port are 2 lead-out terminals (connecing the load of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator) of the intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator.
(5) resistance value of current-limiting resistance R1 and R4 is chosen according to the Sefe antiexplosion maximum short circuit current of GB3836.4-83 regulation;
(6) resistance value of regulating resistor R2 and R5 is chosen according to the high open circuit voltage of the Sefe antiexplosion of GB3836.4-83 regulation;
2, a kind of intrinsic safe explosion-proof D.C. regulated power supply that is made of integrated regulator as claimed in claim 1 is characterized in that:
(1) the integrated regulator N1 of described adjustable overcurrent protection and N2 are CW200 type integrated regulator;
(2) resistance value of described current-limiting resistance R1 and R4 is 1.5 Ω;
(3) resistance value of described regulating resistor R2 is 5.6K Ω, and the resistance value of regulating resistor R5 is 4.7K Ω;
(4) resistance value of described voltage reference resistance R 3 and R6 is 820 Ω;
(5) capacitance of described weakening filter capacitor C1, C2 and C3 is 0.1 μ f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230025 CN2128396Y (en) | 1992-08-11 | 1992-08-11 | Safety flame-proof dc regulated power supply made of integrated voltage-regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230025 CN2128396Y (en) | 1992-08-11 | 1992-08-11 | Safety flame-proof dc regulated power supply made of integrated voltage-regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2128396Y true CN2128396Y (en) | 1993-03-17 |
Family
ID=33773244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92230025 Expired - Fee Related CN2128396Y (en) | 1992-08-11 | 1992-08-11 | Safety flame-proof dc regulated power supply made of integrated voltage-regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2128396Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100566075C (en) * | 2007-01-24 | 2009-12-02 | 中国科学院自动化研究所 | Explosive gas atmosphere is with the uninterrupted D.C. regulated power supply of essential safe type |
| CN101346867B (en) * | 2005-12-27 | 2012-08-22 | Vega格里沙贝两合公司 | Circuit arrangement featuring explosion protection |
-
1992
- 1992-08-11 CN CN 92230025 patent/CN2128396Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346867B (en) * | 2005-12-27 | 2012-08-22 | Vega格里沙贝两合公司 | Circuit arrangement featuring explosion protection |
| CN100566075C (en) * | 2007-01-24 | 2009-12-02 | 中国科学院自动化研究所 | Explosive gas atmosphere is with the uninterrupted D.C. regulated power supply of essential safe type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |