DRQF type industrial and commercial valve boost power supply circuit

Abstract

The utility model discloses a DRQF type industrial and commercial valve boost power supply circuit, which comprises a battery, an anti-reverse connection circuit, a first voltage stabilization and boost module, a second voltage stabilization and boost module, a main control module, a current limiting module, a control type driving module and a rechargeable capacitor, the second input end of the anti-reverse-connection circuit is connected to the negative electrode of the battery, the output end of the anti-reverse-connection circuit is connected to the input end of the first voltage stabilizing and boosting module, the output end of the first voltage stabilizing and boosting module is connected to the second input end of the second voltage stabilizing and boosting module, and the first input end of the second voltage stabilizing and boosting module is connected to the positive electrode of the battery. The output end of the second voltage stabilizing and boosting module is connected to the high-voltage input end of the control type driving module through the current limiting module, and the low-voltage input end of the control type driving module is grounded. The DRQF type industrial and commercial valve boost power supply circuit solves the problem that battery power supply cannot be realized in the prior art.

Description

Technical Field

[0001] The utility model relates to a valve power supply circuit, in particular to a DRQF type industrial and commercial valve boost power supply circuit. Background Art

[0002] The Chinese patent discloses a 24V power supply circuit for a gas emergency shut-off valve with an application number of CN202220073714.5. The 24V power supply circuit for the gas emergency shut-off valve comprises: an access circuit, which is provided with a first input end and a second input end, and the first input end and the second input end of the access circuit are respectively connected to a 24V voltage or ground; a transformer module, whose input end is connected to a high-voltage output end and a low-voltage output end of the access circuit, and the transformer module is used to transform 24V into 36V; a power supply module, which comprises: an output circuit, a first switch circuit, a second switch circuit and a charging capacitor C4, the output end of the transformer module is connected to the first end of the output circuit, the second end of the output circuit is the high-voltage output end of the power supply module, the control end of the first switch circuit is connected to the high-voltage output end of the access circuit, and the output end of the first switch circuit is connected to the control end of the second switch circuit.

[0003] Although the above 24V power supply circuit for the gas emergency shut-off valve solves the problem in the prior art that the 24V voltage output cannot meet the operation of the solenoid valve, the 24V power supply circuit for the gas emergency shut-off valve still has the following disadvantages: it cannot be powered by a battery, and the voltage after the battery is powered is too low to be used as the working voltage of the electromagnet. Utility Model Content

[0004] The utility model provides a DRQF type industrial and commercial valve boost power supply circuit to solve the problem that the prior art cannot realize battery power supply.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a DRQF type industrial and commercial valve boost power supply circuit, comprising: a battery, an anti-reverse connection circuit, a first voltage-stabilizing boost module, a second voltage-stabilizing boost module, a main control module, a current limiting module, a controlled drive module and a rechargeable capacitor, wherein the first input end of the anti-reverse connection circuit is connected to the positive electrode of the battery, the second input end of the anti-reverse connection circuit is connected to the negative electrode of the battery, the output end of the anti-reverse connection circuit is connected to the input end of the first voltage-stabilizing boost module, the output end of the first voltage-stabilizing boost module is connected to the second input end of the second voltage-stabilizing boost module, the first input end of the second voltage-stabilizing boost module is connected to the positive electrode of the battery, the output end of the second voltage-stabilizing boost module is connected to the high voltage input end of the controlled drive module through the current limiting module, the low voltage input end of the controlled drive module is grounded, the control end of the controlled drive module and the control end of the first voltage-stabilizing boost module are both connected to the first output end of the main control module, the high voltage input end of the controlled drive module is connected to the positive electrode of the rechargeable capacitor, the negative electrode of the rechargeable capacitor is grounded, and the positive electrode of the rechargeable capacitor is the output end of the DRQF type industrial and commercial valve boost power supply circuit.

[0007] Preferably, the second voltage stabilizing and boosting module includes: a transistor Q1, a MOS tube M2A, a resistor R4 and an inductor L1, the base of the transistor Q1 is the second input end of the second voltage stabilizing and boosting module, the collector of the transistor Q1 is the first input end of the second voltage stabilizing and boosting module, the collector of the transistor Q1 is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the drain of the MOS tube M2A, the drain of the MOS tube M2A is the output end of the second voltage stabilizing and boosting module, the source of the MOS tube M2A is grounded, the gate of the MOS tube M2A is connected to the emitter of the transistor Q1, and the emitter of the transistor Q1 is grounded through the resistor R4.

[0008] Preferably, the base of the transistor Q1 is connected to one end of the resistor R2, and the other end of the collector of the transistor Q1 is connected to the other end of the resistor R2.

[0009] Preferably, the current limiting module comprises: a current limiting diode D2, an anode of the current limiting diode D2 is connected to the output end of the second voltage stabilizing and boosting module, and a cathode of the current limiting diode D2 is connected to the high voltage input end of the controlled driving module.

[0010] Preferably, the controlled driving module includes: resistor R3, resistor R5, resistor R6, resistor R7, transistor Q2 and transistor Q3, one end of resistor R5 is the control end of the second voltage stabilizing boost module, the other end of resistor R5 is connected to the base of transistor Q3, the emitter of transistor Q3 is grounded, the collector of transistor Q3 is connected to one end of resistor R3 and the base of transistor Q2, the emitter of transistor Q2 is connected to one end of resistor R7 through resistor R6, the other end of resistor R7 is the low voltage input end of the second voltage stabilizing boost module, the collector of transistor Q2 and the other end of resistor R3 are connected to form the high voltage input end of the second voltage stabilizing boost module.

[0011] Preferably, the anti-reverse connection circuit includes: a MOS tube M2B, a resistor R1, a capacitor C1 and a diode D1, the drain of the MOS tube M2B is the second input end of the anti-reverse connection circuit, the source of the MOS tube M2B, the negative electrode of the capacitor C1 and the cathode of the diode D1 are all grounded, the gate of the MOS tube M2B, the negative electrode of the capacitor C1 and the cathode of the diode D1 are all connected to the first end of the resistor R1, and the second end of the resistor R1 is the first input end of the anti-reverse connection circuit and the output end of the anti-reverse connection circuit.

[0012] Preferably, the anti-reverse connection circuit further includes: a capacitor C2 and a capacitor C3, wherein the positive electrode of the capacitor C2 and the positive electrode of the capacitor C3 are both connected to the second end of the resistor R1, and the negative electrode of the capacitor C2 and the negative electrode of the capacitor C3 are both grounded.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In this application, first, after the battery voltage is connected, it is first passed through the anti-reverse connection circuit. The anti-reverse connection circuit can avoid the battery from damaging the circuit after being reversely connected, and prolongs the service life. Then, the voltage is boosted twice by the first voltage-stabilizing boost module and the second voltage-stabilizing boost module, so that two boosts are achieved. The first voltage-stabilizing boost module operates under the control of the main control module, thereby controlling the operation of the boosting work. After that, a control-type drive module is set, and the control-type drive module can operate under the control of the main control module, so that when the first voltage-stabilizing boost module is working, the control-type drive module also controls the control-type drive module to close, ensuring that the output voltage is both amplified and controlled under control. Finally, since the battery output voltage is about 7.4v, it is difficult to provide a stable 24v voltage by relying solely on the first voltage-stabilizing boost module and the second voltage-stabilizing boost module in front, so a rechargeable capacitor is also added in this application to achieve a stable output voltage, ensure that the output voltage can be raised to above 24v voltage, and ensure that the electromagnet in the DRQF type industrial and commercial valve can be powered normally.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the circuit diagram of the DRQF industrial and commercial valve boost power supply circuit. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0018] like Figure 1As shown, the utility model discloses a DRQF type industrial and commercial valve boost power supply circuit, including: a battery, an anti-reverse connection circuit, a first voltage-stabilizing boost module, a second voltage-stabilizing boost module, a main control module, a current limiting module, a controlled drive module and a rechargeable capacitor, wherein the first input end of the anti-reverse connection circuit is connected to the positive electrode B+ of the battery, the second input end of the anti-reverse connection circuit is connected to the negative electrode B- of the battery, the output end of the anti-reverse connection circuit is connected to the input end of the first voltage-stabilizing boost module, the output end of the first voltage-stabilizing boost module is connected to the second input end of the second voltage-stabilizing boost module, the first input end of the second voltage-stabilizing boost module is connected to the positive electrode of the battery, the output end of the second voltage-stabilizing boost module is connected to the high voltage input end of the controlled drive module through the current limiting module, the low voltage input end of the controlled drive module is grounded, the control end of the controlled drive module and the control end of the first voltage-stabilizing boost module are both connected to the first output end of the main control module, the high voltage input end of the controlled drive module is connected to the positive electrode of the rechargeable capacitor, the negative electrode of the rechargeable capacitor is grounded, and the positive electrode of the rechargeable capacitor is the output end of the DRQF type industrial and commercial valve boost power supply circuit.

[0019] The first voltage stabilizing and boosting module U3 uses a boosting chip.

[0020] The second voltage stabilizing and boosting module includes: a transistor Q1, a MOS tube M2A, a resistor R4 and an inductor L1, the base of the transistor Q1 is the second input end of the second voltage stabilizing and boosting module, the collector of the transistor Q1 is the first input end of the second voltage stabilizing and boosting module, the collector of the transistor Q1 is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the drain of the MOS tube M2A, the drain of the MOS tube M2A is the output end of the second voltage stabilizing and boosting module, the source of the MOS tube M2A is grounded, the gate of the MOS tube M2A is connected to the emitter of the transistor Q1, and the emitter of the transistor Q1 is grounded through the resistor R4. The transistor Q1 cooperates with the MOS tube M2A to realize the amplification function.

[0021] The base of the transistor Q1 is connected to one end of the resistor R2 , and the other end of the collector of the transistor Q1 is connected to the other end of the resistor R2 .

[0022] The current limiting module includes: a current limiting diode D2, the anode of the current limiting diode D2 is connected to the output end of the second voltage stabilizing boost module, and the cathode of the current limiting diode D2 is connected to the high voltage input end of the control driving module. The current limiting diode D2 limits the current from the rechargeable capacitor C4 to the MOS tube M2A and other electronic components.

[0023] The controlled driving module includes: a resistor R3, a resistor R5, a resistor R6, a resistor R7, a transistor Q2 and a transistor Q3, one end of the resistor R5 is the control end of the second voltage stabilizing and boosting module, the other end of the resistor R5 is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to one end of the resistor R3 and the base of the transistor Q2, the emitter of the transistor Q2 is connected to one end of the resistor R7 through the resistor R6, the other end of the resistor R7 is the low voltage input end of the second voltage stabilizing and boosting module, the collector of the transistor Q2 and the other end of the resistor R3 are connected to form the high voltage input end of the second voltage stabilizing and boosting module.

[0024] The anti-reverse connection circuit includes: a MOS tube M2B, a resistor R1, a capacitor C1 and a diode D1, the drain of the MOS tube M2B is the second input end of the anti-reverse connection circuit, the source of the MOS tube M2B, the cathode of the capacitor C1 and the cathode of the diode D1 are all grounded, the gate of the MOS tube M2B, the cathode of the capacitor C1 and the cathode of the diode D1 are all connected to the first end of the resistor R1, and the second end of the resistor R1 is the first input end of the anti-reverse connection circuit and the output end of the anti-reverse connection circuit. The MOS tube M2B plays a major role in preventing reverse connection.

[0025] The anti-reverse connection circuit also includes: capacitor C2 and capacitor C3, the positive electrode of capacitor C2 and the positive electrode of capacitor C3 are both connected to the second end of resistor R1, and the negative electrode of capacitor C2 and the negative electrode of capacitor C3 are both grounded. Capacitor C2 and capacitor C3 stabilize the voltage again to improve the voltage stabilization effect.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. DRQF industrial and commercial valve boost power supply circuit, characterized in that: include: A battery, an anti-reverse connection circuit, a first voltage-stabilizing boost module, a second voltage-stabilizing boost module, a main control module, a current limiting module, a controlled drive module and a rechargeable capacitor. The first input end of the anti-reverse connection circuit is connected to the positive electrode of the battery, the second input end of the anti-reverse connection circuit is connected to the negative electrode of the battery, the output end of the anti-reverse connection circuit is connected to the input end of the first voltage-stabilizing boost module, the output end of the first voltage-stabilizing boost module is connected to the second input end of the second voltage-stabilizing boost module, the first input end of the second voltage-stabilizing boost module is connected to the positive electrode of the battery, the output end of the second voltage-stabilizing boost module is connected to the high voltage input end of the controlled drive module through the current limiting module, the low voltage input end of the controlled drive module is grounded, the control end of the controlled drive module and the control end of the first voltage-stabilizing boost module are both connected to the first output end of the main control module, the high voltage input end of the controlled drive module is connected to the positive electrode of the rechargeable capacitor, the negative electrode of the rechargeable capacitor is grounded, and the positive electrode of the rechargeable capacitor is the output end of the DRQF type industrial and commercial valve boost power supply circuit.

2. The DRQF type industrial and commercial valve boost power supply circuit according to claim 1 is characterized in that: The second voltage stabilizing and boosting module includes: a transistor Q1, a MOS tube M2A, a resistor R4 and an inductor L1. The base of the transistor Q1 is the second input end of the second voltage stabilizing and boosting module, the collector of the transistor Q1 is the first input end of the second voltage stabilizing and boosting module, the collector of the transistor Q1 is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the drain of the MOS tube M2A, the drain of the MOS tube M2A is the output end of the second voltage stabilizing and boosting module, the source of the MOS tube M2A is grounded, the gate of the MOS tube M2A is connected to the emitter of the transistor Q1, and the emitter of the transistor Q1 is grounded through the resistor R4.

3. The DRQF type industrial and commercial valve boost power supply circuit according to claim 2 is characterized in that: The base of the transistor Q1 is connected to one end of the resistor R2 , and the other end of the collector of the transistor Q1 is connected to the other end of the resistor R2 .

4. The DRQF industrial and commercial valve boost power supply circuit according to any one of claims 1 to 3, characterized in that: The current limiting module includes: a current limiting diode D2, an anode of the current limiting diode D2 is connected to the output end of the second voltage stabilizing and boosting module, and a cathode of the current limiting diode D2 is connected to the high voltage input end of the control driving module.

5. The DRQF industrial and commercial valve boost power supply circuit according to claim 4 is characterized in that: The controlled driving module includes: a resistor R3, a resistor R5, a resistor R6, a resistor R7, a transistor Q2 and a transistor Q3, one end of the resistor R5 is the control end of the second voltage stabilizing and boosting module, the other end of the resistor R5 is connected to the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to one end of the resistor R3 and the base of the transistor Q2, the emitter of the transistor Q2 is connected to one end of the resistor R7 through the resistor R6, the other end of the resistor R7 is the low voltage input end of the second voltage stabilizing and boosting module, the collector of the transistor Q2 and the other end of the resistor R3 are connected to form the high voltage input end of the second voltage stabilizing and boosting module.

6. The DRQF industrial and commercial valve boost power supply circuit according to any one of claims 1 to 3, characterized in that: The anti-reverse connection circuit includes: a MOS tube M2B, a resistor R1, a capacitor C1 and a diode D1, the drain of the MOS tube M2B is the second input end of the anti-reverse connection circuit, the source of the MOS tube M2B, the negative electrode of the capacitor C1 and the cathode of the diode D1 are all grounded, the gate of the MOS tube M2B, the negative electrode of the capacitor C1 and the cathode of the diode D1 are all connected to the first end of the resistor R1, and the second end of the resistor R1 is the first input end of the anti-reverse connection circuit and the output end of the anti-reverse connection circuit.

7. The DRQF industrial and commercial valve boost power supply circuit according to claim 6 is characterized in that: The anti-reverse connection circuit also includes: a capacitor C2 and a capacitor C3, wherein the positive electrode of the capacitor C2 and the positive electrode of the capacitor C3 are both connected to the second end of the resistor R1, and the negative electrode of the capacitor C2 and the negative electrode of the capacitor C3 are both grounded.

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