Implementation device for automatically reducing power consumption of electromagnetic valve

Abstract

The invention provides a device for realizing automatic power consumption reduction of an electromagnetic valve, which comprises a delay voltage switching loop and a discharge loop, and is characterized in that the delay voltage switching loop obtains high power supply voltage at the moment when the electromagnetic valve is opened and automatically switches to low power supply voltage after the valve is normally opened; the delay voltage switching loop comprises a field effect transistor, a capacitor and an adjustable resistor, the duration of the electromagnetic valve for obtaining high power supply voltage is changed by adjusting the resistance value of the adjustable resistor, and the opening time requirements of electromagnetic valves of different models are met. By designing the delay voltage switching loop, the electromagnetic valve obtains high voltage at the opening moment so as to ensure reliable opening, and then the electromagnetic valve is automatically switched to low voltage so as to maintain a low-power-consumption working state; not only is the power consumption of the electromagnetic valve in a long-term opening state reduced, but also excessive waste heat power consumption caused by a resistance voltage division scheme is avoided, so that the electromagnetic valve is more suitable for a long-term working scene.

Description

Technical Field

[0001] The present invention relates to the technical field of solenoid valves, and in particular to a device for realizing automatic power consumption reduction of solenoid valves. Background Art

[0002] Solenoid valves play a vital role in industrial automation control systems. Their stability and power consumption directly affect the operating efficiency and reliability of the entire system. In certain application scenarios, the solenoid valve may need to be powered on continuously for several hours or even longer, which poses a severe challenge to the power consumption control of the solenoid valve. Long-term high power consumption operation will not only cause the solenoid valve to heat up severely, affecting its service life, but may also increase the thermal load of the system and reduce the overall reliability of the system.

[0003] A solenoid valve energy-saving control device and system are disclosed in the patent document with the announcement number CN217272249U, which relates to the technical field of solenoid valves. The device includes: a solenoid valve, a voltage holding unit and a time-delay conduction unit, and the voltage holding unit is connected to the solenoid valve and the time-delay conduction unit respectively. The voltage holding unit is used to be at a first high voltage when the solenoid valve is started, and at a first low voltage when the solenoid valve keeps working, that is, the starting voltage is used when the solenoid valve is turned on through a pure hardware control method, and the voltage is reduced to a holding voltage after the solenoid valve is turned on.

[0004] Traditional solenoid valve power consumption control methods often use a resistor voltage division scheme, but this method will generate excess heat power consumption during the solenoid valve opening period, which is not conducive to the long-term stable operation of the solenoid valve. In addition, different types of solenoid valves have different requirements for power supply voltage and opening time due to differences in their internal structures and characteristics. Therefore, how to achieve automatic switching of the power supply of the solenoid valve without changing the existing control system to reduce power consumption and extend the working life of the solenoid valve has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a device for automatically reducing power consumption of a solenoid valve.

[0006] According to the present invention, a device for realizing automatic power consumption reduction of a solenoid valve includes: a delayed voltage switching circuit and a discharge circuit. The delayed voltage switching circuit obtains a high power supply voltage at the moment the solenoid valve is opened, and automatically switches to a low power supply voltage after the valve is opened normally; the delayed voltage switching circuit includes a field effect transistor, a capacitor and an adjustable resistor. By adjusting the resistance value of the adjustable resistor, the time duration for the solenoid valve to obtain the high power supply voltage is changed to adapt to the opening time requirements of solenoid valves of different models.

[0007] Preferably, the delayed voltage switching circuit includes a field effect transistor PMOS, the gate of the field effect transistor PMOS is connected to the positive electrode of the diode D1, one end of the adjustable resistor R1, and one end of the capacitor C1, the drain of the field effect transistor PMOS is connected to the negative electrode of the diode D1, the adjustable end of the adjustable resistor R1, and one end of the resistor R2; the source of the field effect transistor PMOS is connected to the positive electrode of the diode D2.

[0008] Preferably, the other end of the capacitor C1 is connected to a capacitor C2, and the other end of the capacitor C2 is connected to a resistor R3 and a source of a field effect transistor NMOS.

[0009] Preferably, the gate of the field effect transistor NMOS is connected to a resistor R2 and a resistor R3 respectively, and the drain of the field effect transistor NMOS is connected to a resistor R4 and a solenoid valve.

[0010] Preferably, the cathode of the diode D2 is connected to the cathode of the diode D3, the cathode of the diode D4, and the solenoid valve; the anode of the diode D3 is connected to the power supply U2; the anode of the diode D4 is connected to the resistor R4, and the other end of the resistor R4 is connected to the other end of the solenoid valve and the drain of the field effect transistor NMOS.

[0011] Preferably, when the solenoid valve is not working, the field effect transistor of the control module instruction circuit is in the cut-off state, the two field effect transistors in the control loop in the device are in the cut-off state, and the solenoid valve has no power input.

[0012] Preferably, when the control module sends a valve opening signal, the field effect tube of the external instruction circuit is turned on, and at the same time, the NMOS in the delay voltage switching module is turned on and the capacitor starts to charge. During the charging period, the power supply voltage obtained by the solenoid valve is a high voltage;

[0013] When the capacitor is fully charged, the solenoid valve supply voltage automatically switches to a low voltage and remains in this state, and the solenoid valve is in a low power consumption operation mode.

[0014] Preferably, when the control module stops sending the valve opening signal, the field effect transistor of the external instruction circuit returns to the cut-off state, and at the same time, the NMOS in the delay voltage switching module is cut off, and the solenoid valve is closed.

[0015] Preferably, the device further comprises a sensor for detecting the state of the solenoid valve, and when an abnormality of the solenoid valve is detected, the power supply is automatically cut off.

[0016] Preferably, the device adopts a dual power supply solution, and when a single power supply fails, the solenoid valve works normally; the device adopts automatic voltage switching.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention designs a delayed voltage switching circuit to achieve a high voltage at the moment of opening of the solenoid valve to ensure reliable opening, and then automatically switches to a low voltage to maintain a low-power working state; it not only reduces the power consumption of the solenoid valve in a long-term open state, but also avoids the excess heat power consumption caused by the resistor voltage division scheme, making the solenoid valve more suitable for long-term working scenarios;

[0019] 2. The dual power supply scheme and delay circuit design adopted by the present invention ensure the high reliability and rapid response of the solenoid valve during the opening process; by accurately controlling the high voltage power supply duration, the opening requirements of solenoid valves of different models can be adapted, thereby improving the stability and reliability of the entire control system;

[0020] 3. The present invention can conveniently and quickly change the duration of the solenoid valve obtaining a high power supply voltage by adjusting the resistance value of the adjustable resistor to meet the delay duration requirements of solenoid valves of different models; and can adapt to a certain range of high and low power supply voltages without adjusting the hardware, so it has a wide range of applicability and can be compatible with different power supply voltages provided by a variety of control systems;

[0021] 4. The implementation of the present invention does not require changes to existing control equipment and control strategies, thus reducing the complexity of the control system; it is more convenient in practical applications, reduces additional installation and debugging costs, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 This is the current path diagram of the solenoid valve in normal opening working mode;

[0024] Figure 2 This is the current path diagram of the solenoid valve entering the low power consumption working mode after normal opening and stabilization;

[0025] Figure 3 This is the circuit diagram of the solenoid valve in de-energized mode. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0027] Embodiment 1:

[0028] According to the present invention, a device for realizing automatic power consumption reduction of a solenoid valve includes: a delayed voltage switching circuit and a discharge circuit. The delayed voltage switching circuit obtains a high power supply voltage at the moment the solenoid valve is opened, and automatically switches to a low power supply voltage after the valve is opened normally; the delayed voltage switching circuit includes a field effect transistor, a capacitor and an adjustable resistor. By adjusting the resistance value of the adjustable resistor, the time duration for the solenoid valve to obtain the high power supply voltage is changed to adapt to the opening time requirements of solenoid valves of different models.

[0029] The delay voltage switching loop includes a field effect transistor PMOS, the gate of which is connected to the positive electrode of a diode D1, one end of an adjustable resistor R1, and one end of a capacitor C1, the drain of which is connected to the negative electrode of a diode D1, the adjustable end of an adjustable resistor R1, and one end of a resistor R2; the source of the field effect transistor PMOS is connected to the positive electrode of a diode D2. The other end of the capacitor C1 is connected to a capacitor C2, and the other end of the capacitor C2 is connected to a resistor R3 and the source of a field effect transistor NMOS. The gate of the field effect transistor NMOS is connected to resistors R2 and R3 respectively, and the drain of the field effect transistor NMOS is connected to a resistor R4 and a solenoid valve. The negative electrode of the diode D2 is connected to the negative electrode of a diode D3, the negative electrode of a diode D4, and a solenoid valve; the positive electrode of the diode D3 is connected to a power supply U2; the positive electrode of the diode D4 is connected to a resistor R4, and the other end of the resistor R4 is connected to the other end of the solenoid valve and the drain of the field effect transistor NMOS.

[0030] When the solenoid valve is not working, the field effect tube of the control module command circuit is in the cut-off state, the two field effect tubes in the control loop in the device are in the cut-off state, and the solenoid valve has no power input. When the control module sends a valve opening signal, the field effect tube of the external command circuit is turned on, and the NMOS in the delay voltage switching module is turned on and the capacitor starts to charge. During the charging period, the power supply voltage obtained by the solenoid valve is a high voltage; when the capacitor is fully charged, the solenoid valve power supply voltage automatically switches to a low voltage and maintains this state, and the solenoid valve is in a low-power operation mode. When the control module stops sending the valve opening signal, the field effect tube of the external command circuit returns to the cut-off state, and the NMOS in the delay voltage switching module is cut off, and the solenoid valve is closed. The device also includes a sensor for detecting the state of the solenoid valve, and when an abnormality of the solenoid valve is detected, the power supply is automatically cut off. The device adopts a dual-power supply solution, and the solenoid valve works normally when a single power supply fails; the device adopts automatic voltage switching.

[0031] Embodiment 2:

[0032] The present invention provides an automatic power consumption reduction control device for a solenoid valve, which is suitable for ensuring the opening reliability and controlling the power consumption of the solenoid valve when working under different control systems. The present invention uses a dual power supply scheme to design a highly reliable and highly responsive delay circuit to achieve automatic switching of the solenoid valve power supply. It is characterized in that: at the moment when the solenoid valve is opened, in order to ensure the reliable opening of the solenoid valve, it is necessary to obtain a high voltage power supply to ensure the opening reliability of the valve; and after the valve is opened normally, the valve is required to work at a low voltage to reduce the system power consumption and the temperature rise of the valve when working for a long time, thereby extending the life of the valve; without adjusting the circuit, it can adapt to the valve power supply voltage within a certain range provided by different types of solenoid valve control modules; by adjusting the value of the adjustable resistor, it can adapt to the requirements of different types of solenoid valves for the duration of high voltage power supply.

[0033] The device reduces the power consumption of the solenoid valve by automatically switching the power supply voltage, and the control circuit does not generate excess heat power consumption in the low power consumption state, which is more suitable for starting the solenoid valve for a long time, thereby greatly improving the reliability and safety of the solenoid valve and reducing the complexity of the control system.

[0034] A device for automatically switching the power supply voltage of a solenoid valve to reduce power consumption. The system is implemented by a time-delay voltage switching circuit and a discharge circuit. The valve control system that automatically switches the power supply voltage to reduce power consumption based on the time-delay voltage switching circuit, that is, at the moment when the solenoid valve is opened, in order to make the solenoid valve open reliably, the solenoid valve needs to obtain a high power supply voltage; and after the valve is opened normally, it is required to work with low power consumption for a long time to reduce heat generation and extend the service life. Therefore, the device automatically switches to a low power supply voltage to automatically reduce the power consumption of the solenoid valve in a long-term open state; by switching high and low power supply voltages, no excess heat power consumption is generated during long-term low power consumption operation; considering the difference in opening time of solenoid valves of different models, the time for the solenoid valve to obtain a high power supply voltage can be changed by adjusting the value of the adjustable resistor in the circuit, so as to quickly adapt to the delay time requirements of solenoid valves of different models; different types of valves require different power supply voltages, and the device can adapt to a certain range of high and low power supply voltages without adjusting the hardware.

[0035] The device of the present invention has a simple structure and high reliability. It adopts an automatic voltage switching scheme. Compared with the resistance voltage division scheme, there is no excess heat power consumption during the valve opening period, and it is more suitable for long-term work. The high-voltage power supply time can be adjusted quickly and conveniently to adapt to the power consumption reduction requirements of solenoid valves with different characteristics. Through this device, there is no need to change the existing control equipment and control strategy, which reduces the complexity of the control system. This device can adapt to the two valve power supply voltages within a certain range provided by the existing control module without adjusting the hardware.

[0036] like Figure 1As shown, when the solenoid valve is not working, the field effect tube of the control module command circuit is in the cut-off state, the two field effect tubes in the control loop in this device are in the cut-off state, and the solenoid valve has no power input.

[0037] like Figure 1 As shown, when the existing control module sends a valve opening signal, the field effect tube of the external command circuit is turned on, and at the same time, the NMOS in the delay voltage switching module is turned on, and the capacitors C1 and C2 begin to charge. During the period when the voltage across D1 is greater than the voltage required for the PMOS to turn on, the PMOS is turned on, and the power supply voltage obtained by the valve is the high voltage U1. The solenoid valve opens normally and stably under the high power supply voltage.

[0038] like Figure 2 As shown, when the capacitors C1 and C2 are fully charged and the voltage across D1 is less than the voltage required for the PMOS to turn on, the PMOS is turned off, and the solenoid valve supply voltage is automatically switched to the low voltage U2 and remains in this state. The solenoid valve is powered by a low voltage and is in a low power consumption operation mode.

[0039] When the existing control module stops sending the valve opening signal, the field effect tube of the external instruction circuit returns to the cut-off state, and at the same time, the NMOS in the delay voltage switching module is cut off, and the solenoid valve is closed.

[0040] The PMOS conduction time can be adjusted by adjusting the resistance of the adjustable resistor R1, which can quickly adapt to the high voltage power supply duration requirements of different types of solenoid valves. The high and low voltages U1 and U2 of the valve power supply are adjustable within a certain range and can adapt to the different power supply voltages provided by different control systems.

[0041] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0042] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0043] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A device for realizing automatic power consumption reduction of a solenoid valve, characterized in that: include: A time-delay voltage switching circuit and a discharge circuit, wherein the time-delay voltage switching circuit obtains a high power supply voltage at the moment the solenoid valve is opened, and automatically switches to a low power supply voltage after the valve is opened normally; the time-delay voltage switching circuit includes a field effect transistor, a capacitor and an adjustable resistor, and by adjusting the resistance value of the adjustable resistor, the time duration for the solenoid valve to obtain a high power supply voltage is changed to adapt to the opening time requirements of solenoid valves of different models.

2. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 1 is characterized in that: The delayed voltage switching loop includes a field effect transistor PMOS, the gate of the field effect transistor PMOS is connected to the positive electrode of the diode D1, one end of the adjustable resistor R1, and one end of the capacitor C1, the drain of the field effect transistor PMOS is connected to the negative electrode of the diode D1, the adjustable end of the adjustable resistor R1, and one end of the resistor R2; the source of the field effect transistor PMOS is connected to the positive electrode of the diode D2.

3. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 2, characterized in that: The other end of the capacitor C1 is connected to the capacitor C2, and the other end of the capacitor C2 is connected to the resistor R3 and the source of the field effect transistor NMOS.

4. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 3 is characterized in that: The gate of the field effect transistor NMOS is connected to the resistor R2 and the resistor R3 respectively, and the drain of the field effect transistor NMOS is connected to the resistor R4 and the solenoid valve.

5. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 2, characterized in that: The cathode of the diode D2 is connected to the cathode of the diode D3, the cathode of the diode D4, and the solenoid valve; the anode of the diode D3 is connected to the power supply U2; the anode of the diode D4 is connected to the resistor R4, and the other end of the resistor R4 is connected to the other end of the solenoid valve and the drain of the field effect transistor NMOS.

6. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 1, characterized in that: When the solenoid valve is not working, the field effect tube of the control module command circuit is in the cut-off state, the two field effect tubes in the control loop in the device are in the cut-off state, and the solenoid valve has no power input.

7. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 1, characterized in that: When the control module sends a valve opening signal, the field effect tube of the external command circuit is turned on, and at the same time, the NMOS in the delay voltage switching module is turned on and the capacitor starts to charge. During the charging period, the power supply voltage obtained by the solenoid valve is a high voltage; When the capacitor is fully charged, the solenoid valve supply voltage automatically switches to a low voltage and remains in this state, and the solenoid valve is in a low power consumption operation mode.

8. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 1, characterized in that: When the control module stops sending the valve opening signal, the field effect tube of the external instruction circuit returns to the cut-off state, and at the same time, the NMOS in the delay voltage switching module is cut off, and the solenoid valve is closed.

9. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 1, characterized in that: The device also includes a sensor for detecting the state of the electromagnetic valve, and when an abnormality of the electromagnetic valve is detected, the power supply is automatically cut off.

10. The device for realizing automatic power consumption reduction of a solenoid valve according to claim 1, characterized in that: The device adopts a dual power supply solution, and when a single power supply fails, the solenoid valve works normally; the device adopts automatic voltage switching.

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