Simple energy recovery device

Abstract

The utility model discloses a simple energy recovery device, which is based on a seawater desalination machine and comprises a hydroelectric generator, a water inlet of an RO (reverse osmosis) membrane assembly is connected with a high-pressure pump, the high-pressure pump is electrically connected with a motor, and a concentrated water outlet of the RO membrane assembly is communicated with a water inlet of the hydroelectric generator. The hydroelectric generator is simple in structure, the hydroelectric generator is pushed by high-pressure concentrated water to generate electric energy, the electric energy is stored in the energy storage battery, and energy recovery is achieved through the simple structure.

Description

Technical Field

[0001] This utility model relates to the field of seawater desalination technology, specifically to a simple energy recovery device. Background Technology

[0002] Seawater desalination equipment requires high-pressure pumps to pressurize the RO membrane. Since the RO membrane itself requires a relatively high osmotic pressure, a large motor is needed to drive the high-pressure pump. During RO membrane desalination, a large amount of high-pressure concentrate is generated. Most companies, in pursuit of simplicity and low cost, directly discharge this concentrate, wasting a significant amount of energy. To address this energy waste, some equipment on the market uses energy recovery devices. These devices work by introducing the high-pressure concentrate into a piston-type energy recovery unit, using the concentrate to push the piston, which then increases the pressure of the RO membrane feed water, thus achieving energy recovery. However, these energy recovery devices are complex in structure, expensive, and prone to piston jamming, causing the entire unit to malfunction. Therefore, a simpler device is needed to solve the energy recovery problem. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides a simple energy recovery device based on a seawater desalination machine.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A simple energy recovery device, based on the RO membrane assembly of a seawater desalination machine, includes a hydroelectric generator. A high-pressure pump is connected to the inlet of the RO membrane assembly, and the high-pressure pump is electrically connected to a motor. The concentrate outlet of the RO membrane assembly is connected to the inlet of the hydroelectric generator. The hydroelectric generator is electrically connected to a storage battery via a controller, and the controller is electrically connected to a power supply unit. The controller and the power supply unit are electrically connected via a drive circuit. The drive circuit includes an integrated circuit, a second resistor, a fourth resistor, a sixth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first field-effect transistor, a second field-effect transistor, and a third field-effect transistor. The three signal output terminals of the integrated circuit are respectively electrically connected to the input terminals of the series circuits composed of the first and second transistors, the third and fourth transistors, and the fifth and sixth transistors. The gate of the field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first and second transistors. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third and fourth transistors. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth and sixth transistors. The gate of the first field-effect transistor is electrically connected to the drain of the first field-effect transistor through the second resistor. The gate of the second field-effect transistor is electrically connected to the drain of the second field-effect transistor through the fourth resistor. The gate of the third field-effect transistor is electrically connected to the drain of the third field-effect transistor through the sixth resistor.

[0006] Preferably, the power supply unit includes a solar power generation module, a mains power module, and / or a diesel generator module, all of which are electrically connected to the controller.

[0007] The solar power generation module includes a solar panel, an inverter, and a control box. The control box is electrically connected to the inverter, and the solar panel is electrically connected to the controller through the inverter. The solar panel converts light energy into electrical energy, and the inverter converts direct current into alternating current.

[0008] The diesel generator module includes a diesel generator and a rectifier power supply circuit. The diesel generator is electrically connected to the controller through the rectifier power supply circuit.

[0009] The mains power module includes a power plug and a mains power rectifier circuit. The power plug is connected to the mains power and is electrically connected to the controller through the mains power rectifier circuit, which is used to convert the mains power into DC voltage.

[0010] Preferably, the first, third, and fifth transistors are all NPN transistors, and the second, fourth, and sixth transistors are all PNP transistors. The collector of the first transistor is electrically connected to the emitter of the second transistor, the collector of the third transistor is electrically connected to the emitter of the fourth transistor, and the collector of the fifth transistor is electrically connected to the emitter of the sixth transistor. The three signal output terminals of the integrated circuit are electrically connected to the bases of the first, third, and fifth transistors, respectively.

[0011] Preferably, the driving circuit further includes a first Zener diode, a second Zener diode, a third Zener diode, a fourth Zener diode, a fifth Zener diode, and a sixth Zener diode. The first field-effect transistor (FET) is electrically connected to its gate through an anti-series circuit composed of the first and second Zener diodes. Thus, the first and second Zener diodes can regulate the trigger voltage of the first FET. The second FET is electrically connected to its gate through an anti-series circuit composed of the third and fourth Zener diodes. The third FET is electrically connected to its gate through an anti-series circuit composed of the fifth and sixth Zener diodes. Similarly, the third and fourth Zener diodes can regulate the trigger voltage of the second FET, and the fifth and sixth Zener diodes can regulate the trigger voltage of the third FET.

[0012] Preferably, the driving circuit further includes a first resistor, a third resistor, and a fifth resistor. The gate of the first field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first transistor and the second transistor through the first resistor. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third transistor and the fourth transistor through the third resistor. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth transistor and the sixth transistor through the fifth resistor.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model has a simple structure. It is based on a seawater desalination machine with the addition of a hydroelectric generator. The concentrated water outlet of the RO membrane assembly is connected to the water inlet of the hydroelectric generator, so that the high-pressure concentrated water drives the hydroelectric generator to generate electrical energy, which is stored in the energy storage battery through the controller, thus realizing energy recovery.

[0015] 2. The drive circuit enables three-way drive, allowing for switching of the electrical energy of the seawater desalination equipment, thus improving the performance of the equipment. Attached Figure Description

[0016] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0017] Figure 1This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a circuit diagram of the driving circuit of this utility model;

[0019] Figure 3 This is a schematic diagram of the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] like Figure 1 and Figure 2 The illustrated simple energy recovery device is based on the RO membrane assembly of an existing seawater desalination machine. It includes a hydroelectric generator 5. A high-pressure pump 2 is connected to the inlet 4 of the RO membrane assembly 1, and the high-pressure pump 2 is electrically connected to a motor 3. The concentrate outlet 6 of the RO membrane assembly 1 is connected to the inlet of the hydroelectric generator 5; that is, concentrate enters from the inlet of the hydroelectric generator and exits from its outlet. The hydroelectric generator 5 is electrically connected to an energy storage battery via a controller, which in turn is electrically connected to a power supply unit.

[0022] The controller and the power supply unit are electrically connected via a drive circuit. The drive circuit includes an integrated circuit U1, a second resistor R2, a fourth resistor R4, a sixth resistor R6, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a sixth transistor Q6, a first field-effect transistor V1, a second field-effect transistor V2, and a third field-effect transistor V3. The three signal output terminals of the integrated circuit U1 are electrically connected to the input terminals of the series circuits composed of the first and second transistors Q1 and Q2, the third and fourth transistors Q3 and Q4, and the fifth and sixth transistors Q5 and Q6, respectively. The gate of the first field-effect transistor V1 is electrically connected to the output terminal of the series circuit composed of the first transistor Q1 and the second transistor Q2. The gate of the second field-effect transistor V2 is electrically connected to the output terminal of the series circuit composed of the third transistor Q3 and the fourth transistor Q4. The gate of the third field-effect transistor V3 is electrically connected to the output terminal of the series circuit composed of the fifth transistor Q5 and the sixth transistor Q6. The gate of the first field-effect transistor V1 is electrically connected to the drain of the first field-effect transistor V1 through the second resistor R2. The gate of the second field-effect transistor V2 is electrically connected to the drain of the second field-effect transistor V2 through the fourth resistor R4. The gate of the third field-effect transistor V3 is electrically connected to the drain of the third field-effect transistor V3 through the sixth resistor R6.

[0023] The working principle of the drive circuit is that the three output terminals of integrated circuit U1 control three drive units. Each drive unit is a circuit mainly composed of two transistors and one field-effect transistor.

[0024] The first transistor Q1, the third transistor Q3, and the fifth transistor Q5 are all NPN transistors, while the second transistor Q2, the fourth transistor Q4, and the sixth transistor Q6 are all PNP transistors. The collector of the first transistor Q1 is electrically connected to the emitter of the second transistor Q2, the collector of the third transistor Q3 is electrically connected to the emitter of the fourth transistor Q4, and the collector of the fifth transistor Q5 is electrically connected to the emitter of the sixth transistor Q6. The three signal output terminals of the integrated circuit U1 are electrically connected to the bases of the first transistor Q1, the third transistor Q3, and the fifth transistor Q5, respectively.

[0025] The driving circuit further includes a first Zener diode VD1, a second Zener diode VD2, a third Zener diode VD3, a fourth Zener diode VD4, a fifth Zener diode VD5, and a sixth Zener diode VD6. The first field-effect transistor V1 is electrically connected to its gate via an anti-series circuit composed of the first Zener diode VD1 and the second Zener diode VD2. Thus, the first Zener diode VD1 and the second Zener diode VD2 can regulate the trigger voltage of the first field-effect transistor V1. The second field-effect transistor V2 is connected via the third Zener diode... The anti-series circuit consisting of VD3 and the fourth Zener diode VD4 is electrically connected to the gate of the second field-effect transistor V2. The gate of the third field-effect transistor V3 is electrically connected to the gate of the third field-effect transistor V3 through the anti-series circuit consisting of the fifth Zener diode VD5 and the sixth Zener diode VD6. Similarly, the third Zener diode VD3 and the fourth Zener diode VD4 can regulate the trigger voltage of the second field-effect transistor V2, and the fifth Zener diode VD5 and the sixth Zener diode VD6 can regulate the trigger voltage of the third field-effect transistor V3.

[0026] The driving circuit further includes a first resistor R1, a third resistor R3, and a fifth resistor R5. The gate of the first field-effect transistor V1 is electrically connected to the output terminal of the series circuit composed of the first transistor Q1 and the second transistor Q2 through the first resistor R1. The gate of the second field-effect transistor V2 is electrically connected to the output terminal of the series circuit composed of the third transistor Q3 and the fourth transistor Q4 through the third resistor R3. The gate of the third field-effect transistor V3 is electrically connected to the output terminal of the series circuit composed of the fifth transistor Q5 and the sixth transistor Q6 through the fifth resistor R5.

[0027] like Figure 3As shown, the controller is used to control the incoming and outgoing power, and the power supply unit is used to supply power to the entire equipment. The electrical energy is first stored in the energy storage battery. When the equipment is started, the energy storage battery supplies power to the equipment to complete the start-up and enable the equipment to operate normally. The RO membrane of the seawater desalination machine starts to produce purified water, while the concentrate outlet produces high-pressure concentrate. After connecting the concentrate outlet to the hydroelectric generator, the high-pressure water drives the hydroelectric generator to generate current. The current enters the controller, and the controller stores the electricity in the energy storage battery, thereby realizing energy recovery.

[0028] In a specific embodiment, the power supply unit may include a solar power generation module, a mains power module, and / or a diesel generator module, all of which are electrically connected to a controller. The solar power generation module includes a solar panel, an inverter, and a control box. The control box is electrically connected to the inverter, and the solar panel is electrically connected to the controller via the inverter. The solar panel converts solar energy into electrical energy, and the inverter converts direct current (DC) into alternating current (AC). The diesel generator module includes a diesel generator and a rectifier power supply circuit. The diesel generator is electrically connected to the controller via the rectifier power supply circuit. The mains power module includes a power plug and a mains power rectifier circuit. The power plug is connected to external mains power, and the power plug is electrically connected to the controller via the mains power rectifier circuit, which converts mains power into DC voltage. The solar energy, diesel generator, and mains power are all existing technologies and will not be described in detail here.

[0029] Of the three power supply modules mentioned above, when the solar power module supplies power, the controller stores the electricity generated by the solar module in the energy storage battery, completing the charging process. When starting the equipment, the energy storage battery supplies power to power the equipment to complete the startup and enable normal operation. The RO membrane of the seawater desalination machine begins to produce purified water, and the concentrate outlet produces high-pressure concentrate. This high-pressure concentrate drives the hydroelectric generator, which generates current. The controller then stores the electricity in the energy storage battery, thus forming an energy recovery circuit. If it is a cloudy or rainy day and the energy storage battery is depleted, a diesel generator or mains power can be used to power the equipment and enable operation. The multiple power supply modules allow for various power supply methods for the seawater desalination equipment, improving its practicality.

[0030] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A simple energy recovery device, based on the RO membrane assembly of a seawater desalination machine, characterized in that: The RO membrane assembly includes a hydroelectric generator. A high-pressure pump is connected to the inlet of the RO membrane assembly, and a motor is electrically connected to the high-pressure pump. The concentrate outlet of the RO membrane assembly is connected to the inlet of the hydroelectric generator. The hydroelectric generator is electrically connected to a storage battery via a controller, which is also electrically connected to a power supply unit. The controller and the power supply unit are electrically connected via a drive circuit. The drive circuit includes an integrated circuit, a second resistor, a fourth resistor, a sixth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first field-effect transistor, a second field-effect transistor, and a third field-effect transistor. The three signal output terminals of the integrated circuit are respectively connected to the input terminal of the series circuit composed of the first and second transistors, the third transistor, and... The input terminal of the series circuit composed of the fourth transistor and the input terminal of the series circuit composed of the fifth and sixth transistors are electrically connected. The gate of the first field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first and second transistors. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third and fourth transistors. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth and sixth transistors. The gate of the first field-effect transistor is electrically connected to the drain of the first field-effect transistor through the second resistor. The gate of the second field-effect transistor is electrically connected to the drain of the second field-effect transistor through the fourth resistor. The gate of the third field-effect transistor is electrically connected to the drain of the third field-effect transistor through the sixth resistor.

2. The simple energy recovery device according to claim 1, characterized in that: The first, third, and fifth transistors are all NPN transistors, while the second, fourth, and sixth transistors are all PNP transistors. The collector of the first transistor is electrically connected to the emitter of the second transistor, the collector of the third transistor is electrically connected to the emitter of the fourth transistor, and the collector of the fifth transistor is electrically connected to the emitter of the sixth transistor. The three signal output terminals of the integrated circuit are electrically connected to the bases of the first, third, and fifth transistors, respectively.

3. The simple energy recovery device according to claim 1, characterized in that: The driving circuit further includes a first Zener diode, a second Zener diode, a third Zener diode, a fourth Zener diode, a fifth Zener diode, and a sixth Zener diode. The first field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the first and second Zener diodes. The second field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the third and fourth Zener diodes. The third field-effect transistor is electrically connected to its gate through an anti-series circuit composed of the fifth and sixth Zener diodes.

4. The simple energy recovery device according to claim 1, characterized in that: The driving circuit further includes a first resistor, a third resistor, and a fifth resistor. The gate of the first field-effect transistor is electrically connected to the output terminal of the series circuit composed of the first transistor and the second transistor through the first resistor. The gate of the second field-effect transistor is electrically connected to the output terminal of the series circuit composed of the third transistor and the fourth transistor through the third resistor. The gate of the third field-effect transistor is electrically connected to the output terminal of the series circuit composed of the fifth transistor and the sixth transistor through the fifth resistor.

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