Controller circuit of energy storage electric valve

Abstract

The utility model discloses an energy storage electrically operated valve controller circuit, which comprises a motor, a discharge circuit, a power supply module, an energy storage circuit and a motor driving circuit, and the power supply output end of the power supply module is respectively connected with the power supply input ends of the motor driving circuit and the energy storage circuit. The output end of the motor driving circuit is connected with the input end of the motor, and the power supply input end of the motor driving circuit is connected with the power supply input end of the motor driving circuit and the power supply input end of the energy storage circuit. According to the electric valve, the opening or closing state of the valve can be kept after power failure, and the safety and stability of a fluid control system are ensured.

Description

Technical Field

[0001] The utility model relates to the field of valve controller control, in particular to an energy storage electric valve controller circuit. Background Art

[0002] The valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium. It has the functions of diversion, cut-off, throttling, non-return, diversion or overflow pressure relief. Valves used for fluid control range from the simplest stop valve to various valves used in extremely complex automatic control systems. The electric valves on the market now stop working after power failure. In some specific occasions, it is necessary to ensure the closed or open state after power failure, which requires electric valves with energy storage. Therefore, an energy storage electric valve controller circuit is needed. Summary of the invention

[0003] The utility model aims to provide an energy storage electric valve controller circuit.

[0004] The utility model comprises a motor, a discharge circuit, a power supply circuit, an energy storage circuit and a motor drive circuit. The power supply output end of the power supply circuit is respectively connected to the power supply input ends of the motor drive circuit and the energy storage circuit, the output end of the motor drive circuit is connected to the input end of the motor, and the motor drive circuit is provided with the discharge circuit.

[0005] Furthermore, the motor drive circuit comprises a third relay REL3, and the third relay REL3 is used to control the power supply switching of the valve, and the output end of the third relay REL3 is respectively connected to the power supply input end of the motor drive circuit and the energy storage circuit.

[0006] Furthermore, the energy storage circuit includes a DC-DC buck chip U1, a first super capacitor CE1, a second super capacitor CE2 and a third super capacitor CE3. The power supply output end of the DC-DC buck chip U1 is connected to the first super capacitor CE1, the second super capacitor CE2 and the third super capacitor CE3 to convert 24V into 14V to store electrical energy, and the power supply output end of the motor drive circuit is powered by the DC-DC buck circuit.

[0007] Furthermore, the discharge circuit includes a boost chip U2, a current sampling resistor R6, a decoupling capacitor C7, and a pull-up resistor R4, wherein the third resistor R3, the fifth capacitor C5, and the sixth capacitor C6 constitute a frequency supplement circuit.

[0008] Furthermore, the power supply circuit includes an AC-DC power supply module and a first relay REL1, an external power supply is connected to an input end of the first relay REL1 through the AC-DC power supply module, and an output end of the first relay REL1 is connected to an input end of the motor drive circuit.

[0009] The beneficial effects of the utility model are:

[0010] The electric valve of the utility model can keep the valve in an open or closed state after power failure, thereby ensuring the safety and stability of the fluid control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the circuit principle diagram of the utility model; DETAILED DESCRIPTION

[0012] The present invention is further described below with reference to the embodiments. The embodiments of the present invention include but are not limited to the following embodiments.

[0013] like Figure 1 As shown, the utility model includes a motor, a discharge circuit, a power supply circuit, an energy storage circuit and a motor drive circuit. The power supply output end of the power supply circuit is respectively connected to the power supply input end of the motor drive circuit and the energy storage circuit, the output end of the motor drive circuit is connected to the input end of the motor, and the discharge circuit is arranged on the motor drive circuit.

[0014] The power circuit converts 220V into DC24V through the power template to power the motor and energy storage circuit; among them, CN1 is the power input terminal, inputs AC220V to power the product, F2 is the fuse protection, RV1 is the varistor, used to absorb voltage pulses, NTC is the negative temperature coefficient resistor, used to limit the impact current at the moment of power-on, U3 is the AC-DC power module, 220V is converted into 24v to power the motor and energy storage circuit, C15 is a capacitor, used to absorb high-frequency signal interference, C14 is an electrolytic capacitor, used for filtering, and R32 is a load resistor, used to provide the current required for the normal operation of the power module.

[0015] The power supply circuit includes an AC-DC power supply module and a first relay REL1, an external power supply is connected to an input end of the first relay REL1 through the AC-DC power supply module, and an output end of the first relay REL1 is connected to an input end of the motor drive circuit.

[0016] The REL1 relay is used to switch the valve switch. The motor drive circuit uses the relay to switch the voltage at the two ends of the motor to control the forward and reverse rotation of the motor. The limit switch is used to control the stop of the motor. After the motor runs to the designated position, the motor is turned off and the motor is protected from stalling by the self-recovery fuse.

[0017] The motor drive circuit includes a third relay REL3, and the third relay REL3 is used to control the power supply switching of the valve, and the output end of the third relay REL3 is connected to the power supply input end of the motor drive circuit and the energy storage circuit respectively. Further, the energy storage circuit includes a DC-DC buck chip U1, a first super capacitor CE1, a second super capacitor CE2 and a third super capacitor CE3, and the power supply output end of the DC-DC buck chip U1 is connected to the first super capacitor CE1, the second super capacitor CE2 and the third super capacitor CE3 to convert 24V into 14V to store electric energy, and the power supply output end of the motor drive circuit is connected to the DC-DC buck circuit for power supply.

[0018] The REL3 relay controls the power supply of the valve from the power supply end or the energy storage end. When there is power input at the power supply end LN, the relay operates and supplies power to the valve through the power supply end. When there is no power at the power supply end LN, the relay disconnects and switches to the energy storage end to supply power to the valve, ensuring that the valve remains closed when the power is off. D2D3 is a diode used to limit the forward and reverse directions of the motor. CN2 CN3 is a position switch, which controls the valve open and closed positions. When the valve is in place, the position switch disconnects and cuts off the power. F1 is a self-recovering fuse. When the motor is blocked, F1 disconnects, and the REL2 fault relay operates and outputs a signal.

[0019] The energy storage circuit converts 24V into 14V through a DC-DC step-down circuit to charge the supercapacitor and store electrical energy; the +24V power supply passes through D4, the diode supplies power to the chip, DZ1 is a TVS tube that protects against abnormal voltage pulses, C3 is a decoupling capacitor that absorbs high-frequency signals, C1 is an electrolytic capacitor that is used for filtering, U1 is a DC-DC chip that converts 24V into 14V to charge the supercapacitor, D1 is a freewheeling diode, L1 is an energy storage inductor, R1 and R2 are voltage divider resistors that control the output voltage, C4 is a decoupling capacitor that absorbs high-frequency signals, and C2 is an electrolytic capacitor that is used for filtering. wave, R33 and R34 are voltage-dividing resistors. The voltage of the supercapacitor is divided by the resistors R33 and R34 to control the Q3 transistor switch. C16 is a filter capacitor. R36 is a feedback voltage-dividing resistor. The output voltage of the charging is changed by this resistor. R22 and R23 are voltage-dividing resistors. The voltage of the supercapacitor is divided by the resistors R22 and R23 to control the Q2 transistor switch. C13 is a filter capacitor. R20 is a feedback voltage-dividing resistor. The output voltage of the charging is changed by this resistor. Through these two circuits, the step charging voltage output can be achieved to reduce the charging power. R11 R12R13 R14 R15 R16 R17 R18 R19 are current-limiting resistors used to limit the charging current. CE1 CE2 CE3 are supercapacitors used to store energy. R29 R30 R31 are discharge resistors.

[0020] The discharge circuit includes a boost chip U2, a current sampling resistor R6, a decoupling capacitor C7, and a pull-up resistor R4, wherein a third resistor R3, a fifth capacitor C5, and a sixth capacitor C6 form a frequency supplement circuit.

[0021] The discharge circuit converts 14V into 24V through a DC-DC boost circuit. When the external power is off, the supercapacitor discharges to power the drive circuit, ensuring that the valve is in a closed state to ensure safety.

[0022] U2 is a boost chip, C7 is a decoupling capacitor, R4 is a pull-up resistor, R3 C5 C6 form a frequency supplement circuit, R5 is a resistor for setting the operating frequency, R6 is a current sampling resistor, and C8 is a capacitor for absorbing high-frequency signals. L2 is an energy storage inductor, Q1 is a switch MOS, which adjusts the output voltage by the switch duty cycle, and C9R7 is an RC absorption circuit used to absorb the spike pulse generated when the switch is turned off. R8 R9 is the feedback voltage divider resistor at the output end to the feedback pin of the U2 chip, which is used to confirm the size of the output voltage. R10C10 is an RC absorption circuit used to absorb interference signals. D5 is a rectifier diode, C11 is a filter capacitor to make the output power smoother, C12 is a decoupling capacitor to absorb high-frequency signals and interference, and R24 is a load resistor to provide the current required for the normal operation of the circuit.

[0023] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. An energy storage electric valve controller circuit, comprising a motor, characterized in that: It also includes a discharge circuit, a power supply circuit, an energy storage circuit and a motor drive circuit. The power supply output end of the power supply circuit is respectively connected to the power supply input end of the motor drive circuit and the energy storage circuit, the output end of the motor drive circuit is connected to the input end of the motor, and the motor drive circuit is provided with the discharge circuit.

2. The energy storage electric valve controller circuit according to claim 1, characterized in that: The motor drive circuit comprises a third relay REL3, and the third relay REL3 is used to control the power supply switching of the valve, and the output end of the third relay REL3 is respectively connected to the power supply input end of the motor drive circuit and the energy storage circuit.

3. The energy storage electric valve controller circuit according to claim 1, characterized in that: The energy storage circuit includes a DC-DC buck chip U1, a first super capacitor CE1, a second super capacitor CE2 and a third super capacitor CE3. The power supply output end of the DC-DC buck chip U1 is connected to the first super capacitor CE1, the second super capacitor CE2 and the third super capacitor CE3 to convert 24V into 14V to store electrical energy. The power supply output end of the motor drive circuit is powered by the DC-DC buck circuit.

4. The energy storage electric valve controller circuit according to claim 1, characterized in that: The discharge circuit includes a boost chip U2, a current sampling resistor R6, a decoupling capacitor C7, and a pull-up resistor R4, wherein a third resistor R3, a fifth capacitor C5, and a sixth capacitor C6 form a frequency supplement circuit.

5. The energy storage electric valve controller circuit according to claim 1, characterized in that: The power supply circuit includes an AC-DC power supply module and a first relay REL1, an external power supply is connected to an input end of the first relay REL1 through the AC-DC power supply module, and an output end of the first relay REL1 is connected to an input end of the motor drive circuit.

Images