Multi-functional electric valve opening and closing device and method

Abstract

The application provides a multifunctional electric valve opening and closing device and method, wherein the device comprises a mode conversion module, an inverter module and a voltage stabilizing module connected with the mode conversion module; the mode conversion module is used for converting the working mode of an electric valve to be controlled; the voltage stabilizing module is used for controlling the opening and closing of the electric valve to be controlled in a direct current 24V working mode; the inverter module is used for controlling the opening and closing of the electric valve to be controlled in an alternating current 220V working mode; the voltage stabilizing module and the inverter module each comprise an electric valve selection unit and an electro-hydraulic switch control unit and an electromagnetic switch control unit connected with the electric valve selection unit. The multifunctional electric valve opening and closing device can be used for the rapid emergency opening and closing of electro-hydraulic valves and electromagnetic valves under 220V and 24V voltages, is safe and reliable, and is convenient to carry.

Description

Technical Field

[0001] This application belongs to the field of pipeline transportation technology, such as shipbuilding and municipal engineering, and specifically relates to a multifunctional electric valve opening and closing device and method. Background Technology

[0002] In the fields of shipbuilding and municipal engineering, pipelines are essential equipment and facilities. In pipeline systems transporting steam, natural gas, compressed air, fresh water, fuel oil, lubricating oil, and hydraulic oil, pipeline valves are indispensable. In recent years, due to the advanced technology and sophisticated control and monitoring systems in pipeline infrastructure, most valves are now electrically operated. However, in shipbuilding pipeline systems, the complexity of shipbuilding processes places high demands on the precision and safety of the control system.

[0003] Electric valves typically use a motor to open and close, but their control precision is limited, and electric motors are not heat-resistant, posing certain safety risks when conveying gaseous media. Electro-hydraulic valves usually include components such as a valve core, coil, and hydraulic control unit. When an electrical signal is applied, the coil generates a magnetic field, causing the valve core to displace, thereby controlling the opening and closing of the valve. Solenoid valves control the valve opening and closing by controlling the coil current to generate a magnetic field that displaces the valve core. Based on these differences in working principles and control methods, electro-hydraulic valves and solenoid valves offer higher control precision and greater safety when conveying media such as gases compared to ordinary electric valves.

[0004] Existing remote control devices for electric valves are deployed and operational only after the system has been fully commissioned and is functioning normally. This presents some inconveniences for valve control in certain scenarios. Firstly, there is a lack of circuit control devices that can simultaneously support the opening and closing of both electro-hydraulic and solenoid valves under two different voltages. Secondly, during the testing phase, the pipeline system is not yet fully commissioned, making it impossible to use remote control devices to control valve opening and closing. Thirdly, after the pipeline system is put into operation, numerous malfunctions will occur over the years, necessitating frequent emergency valve opening and closing. Using remote control devices would require frequent communication between personnel, increasing communication and time costs. Furthermore, the lack of communication signals at the commissioning site can further complicate communication.

[0005] Therefore, it is necessary to design electric valve opening and closing devices that can be directly used on-site. Before the normal and safe use of a ship's piping system, it is generally divided into a segmental tightness test stage, a flow test stage, and a performance test stage. When the ship's piping system does not meet the performance test standards, temporary tightness and flow tests need to be performed on each section of the pipeline, which requires frequent opening and closing of various electric valves. Existing electric valves in pipelines are usually electro-hydraulic valves or solenoid valves, supporting voltages of AC 220V or DC 24V. However, the current electric valve opening and closing devices have relatively simple control and a narrow range of applications, making them unsuitable for various application scenarios. Summary of the Invention

[0006] The purpose of this application is to provide a multifunctional electric valve opening and closing device to solve the problem that the electric valve opening and closing device has a relatively simple control and cannot simultaneously support the temporary opening and closing of electro-hydraulic valves and solenoid valves under 220V and 24V voltages.

[0007] To solve the above-mentioned technical problems, this application provides a multifunctional electric valve opening and closing device, including a mode conversion module and an inverter module and a voltage regulator module connected to the mode conversion module;

[0008] The mode conversion module is used to convert the operating mode of the electric valve to be controlled;

[0009] The voltage regulator module is used to control the opening and closing of the electric valve to be controlled in DC 24V working mode;

[0010] The inverter module is used to control the opening and closing of the electric valve to be controlled in AC 220V working mode;

[0011] Both the voltage regulator module and the inverter module include an electric valve selection unit and an electro-hydraulic switch control unit and an electromagnetic switch control unit, which are respectively connected to the electric valve selection unit.

[0012] In one embodiment of the present invention, the multifunctional electric valve opening and closing device further includes a charging module, a charging control switch, a storage battery, a power supply control switch and a voltage detection module connected in sequence.

[0013] The voltage detection module is connected to the mode conversion module;

[0014] The charging module is used to charge the battery;

[0015] The charging control switch is used to control the connection and disconnection between the charging module and the battery;

[0016] The power supply control switch is used to control the connection and disconnection between the battery and the voltage detection module;

[0017] The voltage detection module is used to detect the output voltage of the battery, and when the output voltage of the battery is lower than a preset low voltage threshold, it controls the battery to stop supplying power to the voltage regulator module and the inverter module.

[0018] In one embodiment of the present invention, the electro-hydraulic switch control unit includes an electro-hydraulic control switch, and an electro-hydraulic valve opening control component and an electro-hydraulic valve closing control component connected to the electro-hydraulic control switch;

[0019] The electro-hydraulic control switch is used to control the opening and closing of the electric valve to be controlled when the electric valve to be controlled is in the electro-hydraulic valve working state;

[0020] The electro-hydraulic valve control assembly includes a valve opening control branch and a valve opening limit branch connected in parallel.

[0021] The valve opening control branch includes a normally closed contact switch of a first valve opening coil and a first relay connected in series.

[0022] The valve opening limit branch includes the coil of the first relay and the valve opening limit switch connected in series.

[0023] The electro-hydraulic valve control assembly includes a valve-closing control branch and a valve-closing limit branch connected in parallel.

[0024] The valve closing control branch includes a valve closing coil and a normally closed contact switch of a second relay connected in series.

[0025] The valve closing limit branch includes the coils of a valve closing limit switch and a second relay connected in series.

[0026] Among them, the first valve opening coil, the valve closing coil, the valve opening limit switch, and the valve closing limit switch are all components of the electric valve to be controlled.

[0027] In one embodiment of the present invention, the electromagnetic switch control unit includes an electromagnetic control switch and an opening electromagnetic valve control component connected to the electromagnetic control switch;

[0028] The electromagnetic switch control unit is used to control the opening and closing of the electric valve to be controlled when the electric valve to be controlled is in the working state of an electromagnetic valve.

[0029] The electromagnetic control component includes a third relay and a second valve opening coil. The first normally open contact switch of the third relay is connected in series with the second valve opening coil and then connected in parallel across the coil of the third relay.

[0030] In one embodiment of the present invention, the multifunctional electric valve opening and closing device further includes an indicator circuit connected to the voltage detection module;

[0031] The indicator circuit includes a valve open indicator branch and a valve close indicator branch;

[0032] The valve open indicator branch includes a valve open indicator light, a normally open contact switch of the first relay, and a second normally open contact switch of the third relay. The normally open contact switch of the first relay is connected in series with the valve open indicator light, and the second normally open contact switch of the third relay is connected in parallel across the two ends of the normally open contact switch of the first relay.

[0033] The valve-closed indicator branch includes a valve-closed indicator light and a normally open contact switch of the second relay, wherein the normally open contact switch of the second relay is connected in series with the valve-closed indicator light.

[0034] In one embodiment of the present invention, the multifunctional electric valve opening and closing device further includes a housing;

[0035] The mode conversion module, the inverter module, and the voltage regulator module are all housed within the enclosure.

[0036] The top of the enclosure is provided with a handle, the surface of the enclosure is provided with a three-shaped charging base and a stuffing box, and the interior of the enclosure is also provided with a terminal block.

[0037] In one embodiment of the present invention, the multifunctional electric valve opening and closing device further includes a cooling fan and a louvered ventilation hole. The cooling fan is disposed inside the housing, and the louvered ventilation hole is disposed on the side wall of the housing. The cooling gas from the cooling fan is dissipated from the louvered ventilation hole.

[0038] In one embodiment of the present invention, the power supply control switch is a circuit breaker.

[0039] To address the aforementioned technical problems, this application also provides a method for opening and closing a multifunctional electric valve, comprising:

[0040] The mode conversion module selects an operating mode that matches the electric valve to be controlled, so that the electric valve to be controlled operates in either DC 24V or AC 220V mode:

[0041] When the electric valve selection unit selects the working state of the electro-hydraulic valve, the opening and closing of the electric valve to be controlled is controlled by the electro-hydraulic control switch;

[0042] When the solenoid valve selection unit selects the working state of the solenoid valve, the opening and closing of the electric valve to be controlled is controlled by the solenoid control switch.

[0043] In one embodiment of the present invention, the method for opening and closing the multifunctional electric valve further includes:

[0044] Close the charging control switch to allow the charging module to charge the battery; after the battery is fully charged, open the charging control switch.

[0045] Close the power supply control switch so that the battery supplies power to the voltage regulator module or the inverter module through the voltage detection module and the mode conversion module;

[0046] The voltage detection module detects the output voltage of the battery. When the output voltage of the battery is detected to be lower than a preset low voltage threshold, the voltage detection module controls the battery to stop supplying power to the voltage regulator module and the inverter module.

[0047] Compared with the prior art, the multifunctional electric valve opening and closing device and method proposed in this invention have the following advantages:

[0048] (1) By designing the control circuits of the solenoid valve and the electro-hydraulic valve under the inverter module and the voltage regulator module, the opening and closing device can control the electro-hydraulic valve and the solenoid valve to open and close under AC 220V voltage or DC 24V.

[0049] (2) The device is housed in a box, making it easy to carry to the site for use;

[0050] (3) The designed cooling fan and louvered ventilation holes make the device have good heat dissipation performance and enhance safety;

[0051] (4) The circuit breaker provides protection for the circuit, and using this device to control electric valves is safer. Attached Figure Description

[0052] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0053] Figure 1 A schematic diagram of the structure of the multifunctional electric valve opening and closing device according to Embodiment 1 of the present invention is shown;

[0054] Figure 2 The circuit diagram of the multifunctional electric valve opening and closing device according to Embodiment 1 of the present invention is shown;

[0055] Figure 3 A circuit diagram of the voltage detection module in Embodiment 1 of the present invention is shown;

[0056] Figure 4 A circuit diagram of the electro-hydraulic switch control unit in Embodiment 1 of the present invention is shown;

[0057] Figure 5 A circuit diagram of the electromagnetic switch control unit in Embodiment 1 of the present invention is shown;

[0058] Figure 6 A circuit diagram of the indicator circuit in Embodiment 1 of the present invention is shown;

[0059] Figure 7 A schematic diagram of the external structure of the box in Embodiment 1 of the present invention is shown;

[0060] Figure 8A schematic diagram of the internal structure of the box in Embodiment 1 of the present invention is shown;

[0061] Figure 9 A flowchart of the opening and closing method of the multifunctional electric valve according to Embodiment 2 of the present invention is shown;

[0062] Component designation explanation:

[0063] 1 is the enclosure, 2 is the handle, 3 is the anti-electric shock type three-shaped charging base, 4 is the alarm indicator light, 5 is the circuit breaker, 6 is the cooling fan, 7 is the louvered ventilation hole, 8 is the control circuit board, 9 is the intermediate relay, 10 is the battery, 11 is the terminal block, 12 is the stuffing box, M1 is the charging module, M2 is the voltage detection module, M3 is the inverter module, M4 is the voltage regulator module, HL1 is the valve open indicator light, HL2 is the valve close indicator light, and SA1-SA5 are all changeover switches. Detailed Implementation

[0064] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples, so that the process of how the present invention uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that, as long as there is no conflict, the various embodiments and features in the various embodiments of the present invention can be combined with each other, and the resulting technical solutions are all within the protection scope of the present invention.

[0065] Example 1

[0066] To address the aforementioned technical problems in the prior art, embodiments of the present invention provide a multifunctional electric valve opening and closing device.

[0067] Figure 1 A schematic diagram of the structure of the multifunctional electric valve opening and closing device according to Embodiment 1 of the present invention is shown. (Refer to...) Figure 1 As shown, the multifunctional electric valve opening and closing device of this embodiment includes a mode conversion module, an inverter module M3 and a voltage regulator module M4, wherein the inverter module M3 and the voltage regulator module M4 are respectively connected to the mode conversion module.

[0068] Figure 2 A circuit diagram of a multifunctional electric valve opening and closing device according to Embodiment 1 of the present invention is shown. (Refer to...) Figure 2As shown, the mode conversion module is mainly used to select the corresponding operating mode according to the voltage parameters supported by the valve to be controlled; the mode conversion module can be a changeover switch SA2. The inverter module M3 is used to control the opening and closing of the electric valve to be controlled in DC 24V operating mode, and the voltage regulator module M4 is used to control the opening and closing of the electric valve to be controlled in AC 220V operating mode. Both the voltage regulator module M4 and the inverter module M3 include an electric valve selection unit, an electro-hydraulic switch control unit, and an electromagnetic switch control unit; the electro-hydraulic switch control unit and the electromagnetic switch control unit are respectively connected to the electric valve selection unit. The electric valve selection unit is used to select the corresponding electro-hydraulic switch control unit or electromagnetic control unit according to the operating state of the valve to be controlled; optionally, the electric valve selection unit is a changeover switch SA3.

[0069] refer to Figure 2 As shown, the multi-functional electric valve opening and closing device also includes a charging module M1, a charging control switch, a battery 10, a power supply control switch, and a voltage detection module M2 connected in series, wherein the voltage detection module M2 is connected to the mode conversion module. The charging module M1 is connected to an external 220V power supply and outputs 24V voltage to charge the battery 10. The charging control switch is located between the charging module M1 and the battery 10. When closed, charging of the battery 10 begins; when open, charging of the battery 10 stops. Optionally, the charging control switch is a changeover switch SA1. The power supply control switch is located between the battery 10 and the voltage detection module M2. When the power supply control switch is closed, the battery 10 is connected to the voltage detection module M2. When the power supply control switch is opened, the battery 10 stops supplying power to the inverter module M3 and the voltage regulator module M4 through the voltage detection module M2. Optionally, the power supply control switch is a circuit breaker 5, preferably model EA9AN2C63. The voltage detection module M2 can detect the voltage of the battery 10. When the voltage is lower than the preset low voltage threshold, it stops supplying power to the inverter module M3 and the voltage regulator module M4.

[0070] Specifically, Figure 3 The circuit diagram of the voltage detection module in Embodiment 1 of the present invention is shown. (Refer to...) Figure 3 As shown, the voltage detection module M2 includes a voltage measurement unit, an alarm indicator light 4, a normally closed terminal, a normally open terminal, and a common terminal of a fourth relay. The positive terminal of the battery 10 is connected to the power supply, the voltage measurement unit, the voltage regulator module M4, and the inverter module M3. The negative terminal of the battery 10 is connected to the voltage measurement unit and the common terminal of the fourth relay. The normally closed terminal of the fourth relay is connected to the voltage regulator inverter module M3. The normally open terminal of the fourth relay is connected to the positive terminal of the battery 10 via the alarm indicator light 4. Optionally, the alarm indicator light 4 is model XB2BSM4LC, which is characterized by simultaneously illuminating the light and emitting an audible sound when an alarm is triggered.

[0071] Figure 4The circuit diagram of the electro-hydraulic switch control unit in Embodiment 1 of the present invention is shown below. Figure 4 As shown, the electro-hydraulic switch control unit includes an electro-hydraulic control switch, and an electro-hydraulic valve opening control assembly and an electro-hydraulic valve closing control assembly connected to the electro-hydraulic control switch. The electro-hydraulic control switch is used to control the opening and closing of the electric valve to be controlled when the electric valve to be controlled is in the electro-hydraulic valve working state; optionally, the electro-hydraulic control switch is a changeover switch SA4. The electro-hydraulic valve opening assembly includes an opening valve control branch and an opening valve limit branch connected in parallel, wherein the opening valve control branch includes a normally closed contact switch of a first opening valve coil and a first relay connected in series, and the opening valve limit branch includes a coil of a first relay and a valve opening limit switch connected in series; the electro-hydraulic valve closing control assembly includes a closing valve control branch and a closing valve limit branch connected in parallel, wherein the closing valve control branch includes a normally closed contact switch of a second relay connected in series, and the closing valve limit branch includes a valve closing limit switch and a second relay coil connected in series. In the inverter module M3, the first relay in Figure 3 The second relay is represented as K1. Figure 3 The first relay is represented as K2 in the voltage regulator module M4. Figure 3 The second relay is represented as K3. Figure 3 The middle part is represented as K4.

[0072] Among them, the first valve opening coil, the valve closing coil, the valve opening limit switch, and the valve closing limit switch are all components in the electric valve to be controlled.

[0073] Optionally, the first relay K1, the second relay K2, and the third relay K5 are AC220V intermediate relays, model RXM2AB2P7 (8 pins / 2 open 2 closed) base RXZE1M2C or RXM4AB2P7 (14 pins / 4 open 4 closed) base RXZE1M4C, used in the inverter module M3 control circuit; the first relay K2, the second relay K4, and the third relay K6 are DC24V intermediate relays, model RXM2AB2BD (8 pins / 2 open 2 closed) base RXZE1M2C or RXM4AB2BD (14 pins / 4 open 4 closed) base RXZE1M4C, used in the voltage regulator module M4 control circuit.

[0074] Figure 5 The circuit diagram of the electromagnetic switch control unit in Embodiment 1 of the present invention is shown below. Figure 5As shown, the electromagnetic switch control unit includes an electromagnetic control switch SA5 and an opening solenoid valve control assembly connected to the electromagnetic control switch. The electromagnetic control switch is used to control the opening and closing of the electric valve to be controlled when the electric valve is in the solenoid valve operating state; optionally, the electromagnetic control switch is a changeover switch SA5. The opening solenoid valve assembly includes a third relay and a second valve opening coil. The first normally open contact switch of the third relay is connected in series with the second valve opening coil and then connected in parallel across the coil of the third relay. It should be noted that when the valve opening control assembly is de-energized, the solenoid valve will automatically reset to the closed state. In the inverter module M3, the third relay... Figure 4 The middle part is represented as K5; in the voltage regulator module M4, the third relay is... Figure 4 The second valve opening coil is also a component in the electric valve to be controlled.

[0075] Figure 6 A circuit diagram of the indicator circuit in Embodiment 1 of the present invention is shown, with reference to... Figure 6 As shown, the indicating circuit is connected to the voltage detection module M2. The indicating circuit illuminates the corresponding indicator light according to the valve's open and closed operating status. The indicating circuit includes a valve open indicating branch and a valve closed indicating branch. The valve open indicating branch includes a valve open indicator light and normally open contacts of the first relay K1, the first relay K3, the third relay K5, and the third relay K6. The normally open contact of the first relay K1 is connected in series with the valve open indicator light, and the second normally open contact of the third relay K5 is connected in parallel across the normally open contact of the first relay K1. The valve closed indicating branch includes a valve closed indicator light and a normally open contact of the second relay K2, which is connected in series with the valve closed indicator light.

[0076] Optionally, the valve open indicator light is model XB2BVB3LC (green), and the valve close indicator light is model XB2BVB4LC (red). The green light illuminates when the valve is open, and the red light illuminates when the valve is closed.

[0077] Figure 7 A schematic diagram of the external structure of the box in Embodiment 1 of the present invention is shown. (Refer to...) Figure 7As shown, the multifunctional electric valve opening and closing device of this embodiment of the invention also includes a housing 1. The mode conversion module, inverter module M3, and voltage regulator module M4 are all disposed inside the housing 1, so that the opening and closing device can be easily carried and thus applied to the valve to be controlled on site. Optionally, the charging module M1, charging control switch, battery 10, power supply control switch, and voltage detection module M2 are also disposed inside the housing 1. The housing 1 is made of lightweight metal, preferably aluminum alloy. Specifically, the charging module M1, voltage detection module M2, inverter module M3, and voltage regulator module M4 are disposed on the control circuit board 8 inside the housing 1. In addition, a set of intermediate relays 9 is also provided inside the housing 1. The aforementioned relays K1, K2, K3, K4, K5, and K6 are all disposed in the intermediate relays 9. The top of the enclosure 1 has a handle 2 for easy carrying. The surface of the enclosure 1 has a three-pronged charging base 3 and a stuffing box 12. The enclosure 1 also has a terminal block 11, an alarm indicator 4, a valve closing indicator HL2, a valve opening indicator HL1, a circuit breaker 5, and knobs for selector switches SA1, SA2, SA3, SA4 and SA5, all located outside the enclosure. When in use, the cable of the electric valve to be controlled needs to be passed through the stuffing box 12 and connected to the terminal block 11, and then the corresponding selector switch is controlled outside the enclosure 1 to complete the operation.

[0078] It should be noted that the reference Figure 7 As shown, the housing 1 is also equipped with a cooling fan 6 inside, and louvered ventilation holes 7 are provided on the side wall of the housing 1. The cooling air from the cooling fan 6 is discharged from the louvered ventilation holes 7, which makes the opening and closing device have good heat dissipation performance, does not easily overheat, and is safer.

[0079] Working principle: The control circuit board integrates the charging module M1, voltage detection module M2, inverter module M3, and voltage regulator module M4 into one unit. Specifically:

[0080] (1) Charging function: When an external AC220V power supply is connected to the shockproof triangular charging base 3, the charging module M1 is energized and outputs a DC24V charging voltage to the selector switch SA1. Rotating SA1 to the charging position connects it to the battery 10, and charging of the battery 10 begins. At the same time, the cooling fan 6 runs, and the heat dissipation gas is discharged through the louvered ventilation holes 7. When the output current of the charging module M1 is 0A, the battery 10 is fully charged, the charging module M1 automatically stops charging, and the charging control switch SA1 is rotated to the stop position to disconnect the external AC220V power supply.

[0081] (2) Voltage detection function: Close circuit breaker 5 to connect battery 10 to voltage detection module M2. When the voltage measurement unit detects that the voltage of battery 10 is higher than the preset low voltage threshold, voltage detection module M2 normally outputs 24V voltage to power change switch SA2. When the voltage measurement unit detects that the voltage of battery 10 is lower than the preset low voltage threshold, the normally closed terminal of the fourth relay is automatically opened to cut off the power supply of battery 10 to voltage regulator inverter module M3. At the same time, the normally open terminal of the fourth relay is closed and alarm indicator 4 is lit. Optionally, the preset low voltage threshold is 19V.

[0082] (3) AC220V electric valve function: When the knob of the changeover switch SA2 is turned to 220V, the inverter module M3 is powered and outputs AC220V voltage to the changeover switch SA3;

[0083] When the selector switch SA3 knob is turned to electro-hydraulic mode, the selector switch SA4 is energized;

[0084] When the selector switch SA4 knob is turned to open the valve, the electro-hydraulic valve opening coil is energized. When the electro-hydraulic valve is fully opened, the valve opening limit switch closes, the coil of the first relay K1 is energized, the normally open contact switch of the first relay K1 closes, the valve opening indicator light HL1 lights up, and at the same time the normally closed contact switch of the first relay K1 opens, and the valve opening coil is de-energized.

[0085] When the selector switch SA4 knob is turned to the valve closing position, the electro-hydraulic valve closing coil is energized. When the electro-hydraulic valve is closed to the position, the valve closing limit switch closes, the coil of the second relay K2 is energized, the normally open contact switch of the second relay closes, the valve closing indicator light HL2 lights up, and at the same time the normally closed contact switch of the second relay opens, de-energizing the valve closing coil.

[0086] When the SA4 selector switch knob is turned to stop, it cuts off the power supply to the electro-hydraulic valve for opening and closing.

[0087] When the selector switch SA3 knob is turned to electromagnetic, the selector switch SA5 is energized;

[0088] When the selector switch SA5 is turned to open the valve, the coil of the third relay K5 is energized, the first normally open contact of the third relay K5 closes, the solenoid valve opening coil is energized, and at the same time the second normally open contact of the third relay K5 closes, and the indicator light HL1 lights up.

[0089] When the SA5 selector switch knob is turned to stop, the power supply to the solenoid valve is cut off, and the solenoid valve is reset to the closed position.

[0090] When the selector switch SA3 knob stops rotating, the power input to selector switches SA4 and SA5 is cut off.

[0091] When the selector switch SA2 knob is turned to stop, the power supply to the inverter module M3 is cut off.

[0092] (4) DC24V electric valve function: When the knob of the changeover switch SA2 is turned to 24V, the voltage regulator module M4 is energized and outputs DC24V voltage to the changeover switch SA3;

[0093] When the selector switch SA3 knob is turned to electro-hydraulic mode, the selector switch SA4 is energized;

[0094] When the selector switch SA4 knob is turned to open the valve, the electro-hydraulic valve opening coil is energized. When the electro-hydraulic valve is fully opened, the valve opening limit switch closes, the coil K3 of the first relay is energized, the normally open contact switch of the first relay K3 closes, the valve opening indicator light HL1 lights up, and at the same time the normally closed contact switch of the first relay K3 opens, and the valve opening coil is de-energized.

[0095] When the selector switch SA4 knob is turned to the valve closing position, the electro-hydraulic valve closing coil is energized. When the electro-hydraulic valve is closed to the position, the valve closing limit switch is closed, the coil K4 of the second relay is energized, the normally open contact switch of the second relay is closed, the valve closing indicator light HL2 is lit, and at the same time the normally closed contact switch of the second relay K4 is opened, and the valve closing coil is de-energized.

[0096] When the SA4 selector switch knob is turned to stop, it cuts off the power supply to the electro-hydraulic valve for opening and closing.

[0097] When the selector switch SA3 knob is turned to electromagnetic, the selector switch SA5 is energized;

[0098] When the selector switch SA5 knob is turned to open the valve, the coil of the third relay K6 is energized, the first normally open contact of the third relay K6 closes, the solenoid valve opening coil is energized, and at the same time the second normally open contact of the third relay K6 closes, and the indicator light HL1 lights up.

[0099] When the SA5 selector switch knob is turned to stop, the power supply to the solenoid valve is cut off, and the solenoid valve is reset to the closed position.

[0100] When the selector switch SA3 knob stops rotating, the power input to selector switches SA4 and SA5 is cut off.

[0101] When the selector switch SA2 knob is turned to stop, the power supply to the voltage regulator module M4 is cut off.

[0102] In summary, the multifunctional electric valve opening and closing device of the present invention can simultaneously control the rapid emergency opening and closing of electro-hydraulic valves and solenoid valves under 220V and 24V voltages. This not only makes the control system more reliable and flexible, but also convenient to carry and safe to use. Therefore, the present invention effectively overcomes the shortcomings in the shipbuilding industry for the opening and closing control of these two types of pipeline valves, fills the corresponding market gap, and has great industrial application prospects.

[0103] Example 2

[0104] To address the technical problems existing in the prior art, this invention also provides a method for opening and closing a multifunctional electric valve.

[0105] This method is implemented based on the multifunctional electric valve opening and closing device described in Example 1. Figure 9 A flowchart of the opening and closing method of the multifunctional electric valve according to Embodiment 2 of the present invention is shown.

[0106] refer to Figure 9 As shown, the multifunctional electric valve opening and closing method of this invention includes:

[0107] Step S1: Close the selector switch SA1 to charge the battery 10 using the charging module M1. After charging is complete, open the selector switch SA1.

[0108] Step S2: Close the changeover switch SA2, so that the battery 10 supplies power to the voltage regulator module M4 or the inverter module M3 through the voltage detection module M2 and the changeover switch SA2. At the same time, the voltage detection module M2 can detect the output voltage of the battery 10. When the output voltage of the battery 10 is detected to be lower than the preset low voltage threshold, the power supply to the voltage regulator module M4 or the inverter module M3 is stopped, thereby extending the service life of the battery 10.

[0109] Step S3: Pass the cable of the electric valve to be controlled through the stuffing box 12 and connect it to the terminal block 11.

[0110] Step S4: Control the changeover switch SA2 to select the operating mode that matches the voltage parameters of the electric valve to be controlled, so that the electric valve to be controlled is in DC 24V operating mode or AC 220V operating mode.

[0111] Step S5: Control the selector switch SA3 to select the operating mode that matches the type of electric valve to be controlled.

[0112] If the electric valve to be controlled is an electro-hydraulic valve, then the control switch SA4 is used to open and close the electric valve to be controlled.

[0113] If the electric valve to be controlled is a solenoid valve, then the control switch SA5 is used to open and close the electric valve to be controlled.

[0114] Step S6: Remove the cable from the device to end the opening and closing operation of the valve to be controlled.

[0115] In summary, the multifunctional electric valve opening and closing method of the present invention can simultaneously control the rapid emergency opening and closing of electro-hydraulic valves and solenoid valves under 220V and 24V voltages. This not only makes the control system more reliable and flexible, but also convenient to carry and safe to use. Therefore, the present invention effectively overcomes the shortcomings in the shipbuilding industry for the opening and closing control of these two types of pipeline valves, fills the corresponding market gap, and has great industrial application prospects.

[0116] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A multifunctional electric valve opening and closing device, characterized in that, It includes a mode conversion module, an inverter module and a voltage regulator module connected to the mode conversion module; The mode conversion module is used to convert the operating mode of the electric valve to be controlled; The voltage regulator module is used to control the opening and closing of the electric valve to be controlled in DC 24V working mode; The inverter module is used to control the opening and closing of the electric valve to be controlled in AC 220V working mode; The voltage regulator module and the inverter module both include an electric valve selection unit and an electro-hydraulic switch control unit and an electromagnetic switch control unit respectively connected to the electric valve selection unit; The electro-hydraulic switch control unit includes an electro-hydraulic control switch, and an electro-hydraulic valve opening control component and an electro-hydraulic valve closing control component connected to the electro-hydraulic control switch. The electro-hydraulic control switch is used to control the opening and closing of the electric valve to be controlled when the electric valve to be controlled is in the electro-hydraulic valve operating state. The electro-hydraulic valve opening control component includes an opening control branch and an opening limit branch connected in parallel. The opening control branch includes a first opening coil and a normally closed contact switch of a first relay connected in series. The opening limit branch includes a coil of the first relay and a valve opening limit switch connected in series. The electro-hydraulic valve closing control component includes a closing control branch and a closing limit branch connected in parallel. The closing control branch includes a closing coil and a normally closed contact switch of a second relay connected in series. The closing limit branch includes a valve closing limit switch and a coil of a second relay connected in series. The electromagnetic switch control unit includes an electromagnetic control switch and an opening solenoid valve control component connected to the electromagnetic control switch; the electromagnetic switch control unit is used to control the opening and closing of the electric valve to be controlled when the electric valve to be controlled is in the working state of the solenoid valve; the opening solenoid valve control component includes a third relay and a second valve opening coil, the first normally open contact switch of the third relay is connected in series with the second valve opening coil and then connected in parallel across the coil of the third relay; The multi-functional electric valve opening and closing device can simultaneously control the rapid emergency opening and closing of electro-hydraulic valves and solenoid valves under 220V and 24V voltages.

2. The multifunctional electric valve opening and closing device according to claim 1, characterized in that, It also includes a charging module, a charging control switch, a storage battery, a power supply control switch, and a voltage detection module connected in sequence; the voltage detection module is connected to the mode conversion module. The charging module is used to charge the battery; The charging control switch is used to control the connection and disconnection between the charging module and the battery; The power supply control switch is used to control the connection and disconnection between the battery and the voltage detection module; The voltage detection module is used to detect the output voltage of the battery, and when the output voltage of the battery is lower than a preset low voltage threshold, it controls the battery to stop supplying power to the voltage regulator module and the inverter module.

3. The multifunctional electric valve opening and closing device according to claim 2, characterized in that, The power supply control switch is a circuit breaker.

4. The multifunctional electric valve opening and closing device according to claim 2, characterized in that, It also includes an indicator circuit connected to the voltage detection module; The indicator circuit includes a valve open indicator branch and a valve close indicator branch; The valve open indicator branch includes a valve open indicator light, a normally open contact switch of the first relay, and a second normally open contact switch of the third relay. The normally open contact switch of the first relay is connected in series with the valve open indicator light, and the second normally open contact switch of the third relay is connected in parallel across the two ends of the normally open contact switch of the first relay. The valve-closed indicator branch includes a valve-closed indicator light and a normally open contact switch of the second relay, wherein the normally open contact switch of the second relay is connected in series with the valve-closed indicator light.

5. The multifunctional electric valve opening and closing device according to claim 1, characterized in that, It also includes the enclosure, The mode conversion module, the inverter module, and the voltage regulator module are all housed within the enclosure. The top of the enclosure is provided with a handle, the surface of the enclosure is provided with a three-shaped charging base and a stuffing box, and the interior of the enclosure is also provided with a terminal block.

6. The multifunctional electric valve opening and closing device according to claim 5, characterized in that, It also includes a cooling fan and louvered ventilation holes. The cooling fan is located inside the housing, and the louvered ventilation holes are located on the side wall of the housing. The cooling gas from the cooling fan is emitted from the louvered ventilation holes.

7. A method for opening and closing a multifunctional electric valve based on the multifunctional electric valve opening and closing device according to any one of claims 1-6, comprising: The control mode conversion module selects the operating mode that matches the electric valve to be controlled, so that the electric valve to be controlled operates in either DC 24V or AC 220V mode: When the control valve selection unit selects the working state of the electro-hydraulic valve, it controls the opening and closing of the electric valve to be controlled through the electro-hydraulic control switch; When the solenoid valve selection unit selects the working state of the solenoid valve, the opening and closing of the electric valve to be controlled is controlled by the solenoid control switch.

8. The method for opening and closing a multifunctional electric valve according to claim 7, characterized in that, Also includes: Close the charging control switch to charge the battery; after the battery is fully charged, open the charging control switch. When the power supply control switch is closed, the battery supplies power to the voltage regulator module or inverter module through the voltage detection module and the mode conversion module. The voltage detection module detects the output voltage of the battery. When the output voltage of the battery is detected to be lower than a preset low voltage threshold, the voltage detection module controls the battery to stop supplying power to the voltage regulator module and the inverter module.

Images