Remote electrically powered vent control circuit and vent device

Abstract

The utility model relates to transformer gas exhaust technology field especially a kind of remote electric exhaust control loop and exhaust device.Electromagnetic valve control module provides the power-on and power-off operation of electromagnetic valve, output port accesses central processing module, and the opening and closing of control fluid pipeline;Voltage drop control module accesses central processing module, and provides segmented voltage reduction processing to input power supply;Central processing module receives voltage drop control module input voltage, executes electromagnetic valve regulation and control command.Pressure relief device valve, electromagnetic valve access gas taking box, gas taking box access gas collecting cylinder;Gas collecting cylinder access electromagnetic valve and liquid collecting bottle), pressure sensor is installed in gas taking box.The utility model solves the problems, such as low efficiency, poor safety and resource waste of traditional manual exhaust mode, greatly improves operation efficiency, reduces manual intervention time;Reduce personnel exposure risk, enhance operation safety;Save manpower resources and traffic resources, reduce operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of transformer gas venting technology, and in particular to a remote electric venting control circuit and venting device. Background Technology

[0002] During transformer operation, internal faults or gas infiltration can lead to the accumulation of methane gas, affecting the insulation performance of the equipment and potentially causing safety accidents. Traditional methane venting and release operations mainly rely on manual on-site operations, requiring operators to travel to the substation for manual venting. However, this method has significant drawbacks: firstly, it is inefficient, with manual operations being time-consuming and slow to respond, failing to meet the demands of modern power grids for rapid operation and maintenance; secondly, it poses significant safety hazards, with personnel exposed to potentially harmful gas environments posing health and accident risks; and thirdly, it is resource-intensive, with frequent on-site operations increasing labor, transportation, and equipment maintenance costs.

[0003] Therefore, there is a need for a remote electric venting control loop and venting device that can combine central processing and remote control, and integrate hardware modules such as pressure sensors, solenoid valves, pressure relief valves, and remote control boards to achieve remote monitoring, control, and efficient emission of transformer gas, and provide precise valve management to meet the needs of the current environment. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0005] Given that the existing technologies mentioned above involve manual operation of gas emission and venting, which is time-consuming and slow in response, it is difficult to meet the needs of modern power grids for rapid operation and maintenance.

[0006] Therefore, the technical problem to be solved by this utility model is to design a remote electric venting control circuit that can combine central processing and remote control to provide precise valve management to meet the needs of the current environment.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a remote electric venting control circuit, comprising,

[0008] Solenoid valve control module, voltage drop control module, central processing module;

[0009] The solenoid valve control module provides power supply and disconnection for the solenoid valve, and its output port is connected to the central processing module to control the opening and closing of the fluid pipeline.

[0010] The voltage reduction control module is connected to the central processing module to provide segmented voltage reduction processing for the input power supply;

[0011] The central processing module receives the input voltage from the voltage reduction control module, executes the solenoid valve control command, and achieves effective remote control.

[0012] As an improvement to this utility model

[0013] The central processing module is equipped with an electromagnetic on / off unit. The pin output of the electromagnetic on / off unit is connected to the corresponding OUT port of the solenoid valve control module to control the on / off state of the solenoid valve.

[0014] The solenoid valve control module includes a relay unit and an optocoupler unit. The relay unit controls the movement of the solenoid valve, and the optocoupler unit achieves electrical isolation between the control signal and the load.

[0015] As an improvement to this utility model

[0016] The central processing module integrates and connects the microcontroller unit, clock adjustment unit, and reset unit.

[0017] The SWCLK and SWDIO interfaces of the microcontroller unit are connected to the PA14 and PA13 pins of the central processing module to realize programming and debugging functions;

[0018] The clock adjustment unit's OS output port is connected to pins 3 to 6 of the central processing module to provide a stable clock signal to support system timing control;

[0019] The RST output port of the reset unit is connected to pin 7 of the central processing module to realize the system reset function and ensure that the safe restart action is performed normally.

[0020] As an improvement to this utility model

[0021] The voltage buck control module includes a first buck unit, a second buck unit, and a third buck unit;

[0022] The first step-down unit receives a 220V input main voltage and reduces it to 24V, then outputs a 24V voltage to the second step-down unit.

[0023] The second step-down unit receives a 24V voltage input, reduces it to 5V, and outputs a 5V voltage to the third step-down unit.

[0024] The third step-down unit receives a 5V voltage input, reduces it to 3.3V, and outputs a 3.3V voltage to the voltage input interface of the central processing module.

[0025] As an improvement to this utility model

[0026] Pins 12 to 15 of the central processing module are connected to the wireless control unit to receive and transmit wireless signals, and to connect to and support the auxiliary button unit for remote control operation.

[0027] Pins 40 to 43 of the central processing module are connected to the auxiliary button unit to enable user input commands and manual control of the device.

[0028] Given that the aforementioned existing technologies pose significant safety hazards, expose personnel to potentially harmful gas environments, pose health and accident risks, consume high resources, and increase labor, transportation, and equipment maintenance costs due to frequent on-site operations.

[0029] Therefore, the technical problem to be solved by this utility model is to design a venting device that integrates hardware modules such as pressure sensor, solenoid valve, pressure relief valve and remote control board to realize remote monitoring, control and efficient emission of transformer gas to meet the needs of the current environment.

[0030] As an improvement to this utility model

[0031] Pressure relief device valve, gas collection cylinder, solenoid valve, pressure sensor, gas sampling box and liquid collection bottle;

[0032] The pressure relief device valve and solenoid valve are connected to the air intake box, and the air intake box is connected to the air collection cylinder;

[0033] The gas collecting cylinder is connected to the solenoid valve and the liquid collecting bottle, and the pressure sensor is installed inside the gas taking box.

[0034] As an improvement to this utility model

[0035] The pressure relief valve is installed on the top of the gas taking box and is connected to the inside of the gas taking box. It opens to release gas when the pressure inside the gas taking box exceeds a preset threshold.

[0036] One end of the gas taking box is threadedly connected to the side wall connector of the transformer gas relay via a connecting pipe, and the other end of the gas taking box is connected to the top of the gas collecting cylinder.

[0037] As an improvement to this utility model

[0038] The solenoid valve includes a first solenoid valve 61, a second solenoid valve 62, and a third solenoid valve 63;

[0039] The first solenoid valve 61 is installed on the connecting pipe between the gas intake box and the gas collecting cylinder to control the transformer gas and liquid to enter the gas collecting cylinder;

[0040] The second solenoid valve 62 is located at the liquid inlet of the gas collecting cylinder to control the liquid entering the liquid collecting bottle;

[0041] The third solenoid valve 63 is located at the gas inlet of the gas collecting cylinder to control the gas entering the gas collector.

[0042] As an improvement to this utility model

[0043] The air extraction box uses a connecting structure, with one end fixed by a nut and the other end connected to the air collection cylinder via a pipe.

[0044] The gas collection cylinder has a directional collection shape to reduce the mixing of gas with the surrounding environment.

[0045] The beneficial effects of this utility model are as follows: it solves the problems of low efficiency, poor safety and waste of resources in traditional manual venting methods, greatly improves operation efficiency and reduces manual intervention time; it reduces personnel exposure risk and enhances operation safety; it saves human and transportation resources and reduces operation and maintenance costs; it promotes the transformation of the power industry towards intelligent and green development and enhances the market competitiveness of enterprises. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0047] Figure 1 This is a connection diagram of the long-range electric venting control circuit of this utility model.

[0048] Figure 2 This is a schematic diagram of the solenoid valve control module of the long-range electric venting control circuit of this utility model.

[0049] Figure 3 This is a schematic diagram of the central processing module of the long-range electric venting control circuit of this utility model.

[0050] Figure 4 This is a schematic diagram of the voltage drop control module of the long-range electric venting control circuit of this utility model.

[0051] Figure 5 This is a schematic diagram of the first step-down unit of the long-range electric venting control circuit of this utility model.

[0052] Figure 6 This is a schematic diagram of the second step-down unit of the long-range electric venting control circuit of this utility model.

[0053] Figure 7 This is a schematic diagram of the third step-down unit of the long-range electric venting control circuit of this utility model.

[0054] Figure 8 This is a diagram of the internal integrated unit of the central processing module of the medium- and long-range electric venting control circuit of this utility model.

[0055] Figure 9 This is a schematic diagram of the wireless control unit and auxiliary button unit of the long-range electric deflation control circuit of this utility model.

[0056] Figure 10 This is a hardware architecture diagram of the venting device in this utility model. Detailed Implementation

[0057] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0058] Example 1

[0059] Reference Figures 1-4 This embodiment provides a remote electric venting control circuit.

[0060] The solenoid valve control module 1, as the execution unit, is responsible for the power supply and disconnection of the solenoid valve. The solenoid valve control module 1 integrates multiple solenoid valve components, including the first, second and third solenoid valves 63, for gas and liquid diversion control.

[0061] The solenoid valve control module 1 incorporates a relay unit 11 and an optocoupler unit 12. The relay unit 11 drives the solenoid valve to switch on and off, while the optocoupler unit 12 provides electrical isolation to prevent interference and backlash. The output ports OUT1, OUT2, and OUT3 of the solenoid valve control module 1 are connected to the input pins of the central processing module 3. Control signals enable precise opening and closing of fluid pipelines, regulating gas flow into the gas collector or liquid diversion to the liquid collection bottle, thus improving operational efficiency.

[0062] Voltage buck control module 2 is responsible for power management and is connected to central processing module 3. Voltage buck control module 2 can process the input power in stages through a step-down circuit to output a stable voltage that meets system requirements. Voltage buck control module 2 employs a filtering design to eliminate noise and ensure power supply reliability. Voltage buck control module 2 is connected to the power pin of central processing module 3, supporting stable system operation in complex environments.

[0063] The central processing module 3, serving as the control core, employs a microcontroller and integrates an electromagnetic on / off unit 31, a microcontroller unit 32, a clock adjustment unit 33, and a reset unit 34. The SWCLK and SWDIO interfaces of the microcontroller unit 32 are connected to pins PA14 and PA13, supporting debugging; the clock adjustment unit 33 is connected to pins 3 to 6, providing a clock signal; and the reset unit 34 is connected to pin 7 to reset the system. The central processing module 3 receives pressure sensor data, generates solenoid valve control commands, and opens the pressure relief valve 4 to release excess gas. Pins 12 to 15 of the central processing module 3 are connected to the wireless control unit 35 for remote operation, and pins 40 to 43 are connected to the auxiliary button unit 34, allowing manual adjustment by operators.

[0064] Example 2

[0065] Reference Figures 1-9 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that:

[0066] The central processing module 3 is equipped with an electromagnetic on / off unit 31. The electromagnetic on / off unit 31 is directly connected to the corresponding OUT1, OUT2, and OUT3 ports of the solenoid valve control module 1 through dedicated pins 17 to 19 for transmitting control signals to manage the on / off state of the solenoid valve.

[0067] The electromagnetic on / off unit 31 adopts a digital output circuit design to ensure stable signal transmission and support multi-channel synchronous control, thereby achieving precise regulation of the transformer gas flow path. The solenoid valve control module 1 includes a relay unit 11 and an optocoupler unit 12. The relay unit 11, acting as a drive component, receives signals from the electromagnetic on / off unit 31 and directly drives the solenoid valve to switch on and off, completing the separation and discharge of gas and liquid. The optocoupler unit 12 is located at the signal input terminal, achieving electrical isolation between the control signal and the load to prevent interference propagation. This architecture improves the system's anti-interference capability, enhancing the reliability of solenoid valve operation, reducing the failure rate, and lowering maintenance requirements.

[0068] The central processing module 3 integrates and connects the microcontroller unit 32, the clock adjustment unit 33, and the reset unit 34, forming a compact core control system. The SWCLK and SWDIO interfaces of the microcontroller unit 32 are connected to the PA14 and PA13 pins of the central processing module 3, respectively, to realize programming and debugging functions, and can support firmware updates and real-time diagnostics.

[0069] The OS output port of the clock adjustment unit 33 is connected to pins 3 to 6 of the central processing module 3 to provide a stable clock signal to support system timing control and ensure the synchronization of the actions of each module.

[0070] The RST output port of the reset unit 34 is connected to pin 7 of the central processing module 3 to realize the system reset function and automatically restart the device in case of abnormality. The integrated connection of the central processing module 3 optimizes the internal signal flow, improves the system response speed and stability, ensures the continuity of remote operation, and reduces maintenance interruptions caused by timing errors.

[0071] The voltage buck control module 2 includes a first buck unit 21, a second buck unit 22, and a third buck unit 23. The voltage buck control module 2 uses a cascaded architecture to process the input power. The first buck unit 21 receives a 220V main voltage input and performs initial voltage reduction through a combination of RC capacitors and resistors, forming a preliminary RC buck network. The reduced voltage enters U2, which is connected in series with an inductor L2. The inductor L2 acts as a low-pass filter element, and several filter capacitors are connected in parallel in this circuit. The processed 24V voltage is led out from the output of the first buck unit 21 and enters the input of the second buck unit 22.

[0072] The second step-down unit 22 receives the 24V voltage processed by the first step-down unit 21. Through the processing of the integrated chip LMR14050SDDA and the matching capacitors, resistors and external inductors, the processed 5V voltage is led out from the positive terminal and enters the input terminal of the third step-down unit 23.

[0073] The third step-down unit 23 receives the processed 5V voltage and, through the integrated chip U6, provides a voltage conversion from 5V to 3.3V. The VIN pin of U6 is connected to the positive terminal of a capacitor, and after processing, it outputs a smoothed 3.3V voltage signal, which is connected to the voltage input interface of the central processing module 3. The multi-stage step-down connection ensures a gradual and stable power supply, improves the circuit's energy efficiency, prevents damage to sensitive components from voltage fluctuations, and extends the overall lifespan of the device.

[0074] Pins 12 to 15 of the central processing module 3 are connected to the wireless control unit 35, which can receive and transmit wireless signals and supports remote control operation. The wireless control unit 35 also works in conjunction with the auxiliary button unit 34.

[0075] Pins 40 to 43 of the central processing module 3 are connected to the auxiliary button unit 34, which is responsible for processing user input commands and realizing manual operation control of the device. The connection architecture of the central processing module 3 integrates wireless and local input methods, expands operational flexibility, allows maintenance personnel to intervene quickly from a distance or on-site, significantly reduces the risks of manual on-site operations, and improves the emergency response capability of the power system.

[0076] Example 3

[0077] Reference Figures 1-10 This embodiment is based on the previous embodiment, and differs from the previous embodiment in that:

[0078] The pressure relief device valve 4 is installed on the top of the gas intake box 5 and is directly connected to the inside of the gas intake box 5. As a safety release component, the pressure relief device valve 4 can open when the pressure inside the gas intake box 5 exceeds a preset threshold to release excess gas and prevent overpressure risk.

[0079] Solenoid valve 6 connects to gas collection box 5, and controls the gas-liquid flow path through pipeline connection; gas collection box 5 serves as a gas collection hub, with one end connected to the side wall connector of the transformer gas relay through a connecting pipe, and the other end connected to the top of gas collection cylinder 5, ensuring that gas is efficiently introduced from the transformer.

[0080] The gas collecting cylinder 5 is connected to the solenoid valve 6 and the liquid collecting bottle 9. The lower end of the gas collecting cylinder 5 is connected to the gas delivery port of the solenoid valve 6 and the inlet pipe of the liquid collecting bottle 9, respectively, for directional separation and collection of gas and liquid. The pressure sensor 7 is installed inside the gas taking box 5 to directly monitor internal pressure changes and is connected to the central processing module 3 of the remote electric venting control circuit through a signal line to realize real-time data feedback.

[0081] The solenoid valve 6 includes a first solenoid valve 61, a second solenoid valve 62, and a third solenoid valve 63, forming a multi-channel control architecture. The first solenoid valve 61 is located on the connecting pipe between the gas intake box 5 and the gas collecting cylinder 5, used to control the gas-liquid mixture in the transformer to enter the gas collecting cylinder 5. The second solenoid valve 62 is located at the liquid inlet of the gas collecting cylinder 5, connected to the liquid collecting bottle 9 via a pipe, controlling the liquid to enter the liquid collecting bottle 9 for separation and collection. The third solenoid valve 63 is located at the gas inlet of the gas collecting cylinder 5, connected to the gas collector, controlling the discharge of pure gas. The architecture of the solenoid valve 6 is integrated with a remote electric venting control circuit, receiving signals through the control module 1 to achieve precise switching.

[0082] The gas collection box 5 adopts a continuous structure. One end is fixed to the connecting pipe with a nut to ensure a sealed connection, and the other end is connected to the gas collection cylinder 5 through a pipe to support continuous gas transmission. The gas collection cylinder 5 is designed with a directional collection shape, and its internal design optimizes the gas flow path, thereby reducing the mixing and diffusion of gas with the surrounding environment and improving collection efficiency.

[0083] This embodiment achieves remote processing of gas through the tight connection of hardware components and integrated control loop, improving the safety and efficiency of venting operations, reducing on-site manual intervention, and lowering resource consumption.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A remote electric venting control circuit, characterized in that: include, Solenoid valve control module (1), voltage drop control module (2), central processing module (3); The solenoid valve control module (1) provides power supply and disconnection operations for the solenoid valve, and its output port is connected to the central processing module (3) to control the opening and closing of the fluid pipeline. The voltage reduction control module (2) is connected to the central processing module (3) to provide segmented voltage reduction processing for the input power supply; The central processing module (3) receives the input voltage from the voltage drop control module (2), executes the solenoid valve control command, and realizes effective remote control.

2. The remote electric venting control circuit according to claim 1, characterized in that: The central processing module (3) is equipped with an electromagnetic on / off unit (31). The pin output of the electromagnetic on / off unit (31) is connected to the corresponding OUT port of the electromagnetic valve control module (1) to control the on / off state of the electromagnetic valve. The solenoid valve control module (1) includes a relay unit (11) and an optocoupler unit (12). The relay unit (11) drives the solenoid valve to move, and the optocoupler unit (12) realizes electrical isolation between the control signal and the load.

3. The remote electric venting control circuit according to claim 1, characterized in that: The central processing module (3) integrates and connects the microcontroller unit (32), the clock adjustment unit (33), and the reset unit (34); The SWCLK and SWDIO interfaces of the microcontroller unit (32) are connected to the PA14 and PA13 pins of the central processing module (3) to realize programming and debugging functions; The clock adjustment unit (33) OS output port is connected to pins 3 to 6 of the central processing module (3) to provide a stable clock signal to support system timing control; The RST output port of the reset unit (34) is connected to pin 7 of the central processing module (3) to realize the system reset function and ensure that the safe restart action is realized normally.

4. The remote electric venting control circuit according to claim 1, characterized in that: The voltage buck control module (2) includes a first buck unit (21), a second buck unit (22), and a third buck unit (23); The first step-down unit (21) receives the 220V input main voltage and reduces it to 24V, and outputs a 24V voltage to the second step-down unit (22); The second step-down unit (22) receives a 24V voltage input, reduces it to 5V, and outputs a 5V voltage to the third step-down unit (23); The third step-down unit (23) receives a 5V voltage input, reduces it to 3.3V, and outputs a 3.3V voltage to the voltage input interface of the central processing module (3).

5. The remote electric venting control circuit according to claim 1, characterized in that: Pins 12 to 15 of the central processing module (3) are connected to the wireless control unit (35) to receive and send wireless signals, and to connect to and support the auxiliary button unit (36) for remote control operation. Pins 40 to 43 of the central processing module (3) are connected to the auxiliary button unit (36) to enable user input commands and manual control of the device.

6. A venting device, characterized in that: Including the remote electric venting control circuit as described in claim 5, and, Pressure relief device valve (4), gas collecting cylinder (5), solenoid valve (6), pressure sensor (7), gas taking box (8) and liquid collecting bottle (9); The pressure relief device valve (4) and the solenoid valve (6) are connected to the air intake box (8), and the air intake box (8) is connected to the air collection cylinder (5); The gas collecting cylinder (5) is connected to the solenoid valve (6) and the liquid collecting bottle (9), and the pressure sensor (7) is installed in the gas taking box (8).

7. The venting device according to claim 6, characterized in that: The pressure relief device valve (4) is installed on the top of the gas taking box (8) and communicates with the inside of the gas taking box (8). It opens to release gas when the pressure inside the gas taking box (8) exceeds a preset threshold. One end of the gas taking box (8) is threadedly connected to the side wall connector of the transformer gas relay through a connecting pipe, and the other end of the gas taking box (8) is connected to the top of the gas collecting cylinder (5).

8. The venting device according to claim 7, characterized in that: The solenoid valve (6) includes a first solenoid valve (61), a second solenoid valve (62) and a third solenoid valve (63); The first solenoid valve 61 is installed on the connecting pipeline between the gas intake box (8) and the gas collection cylinder (5) to control the transformer gas and liquid to enter the gas collection cylinder (5); The second solenoid valve 62 is located at the liquid inlet of the gas collecting cylinder (5) to control the liquid to enter the liquid collecting bottle (9); The third solenoid valve 63 is located at the gas inlet of the gas collecting cylinder (5) to control the gas entering the gas collector.

9. The venting device according to claim 8, characterized in that: The air intake box (8) adopts a connecting structure, with one end fixed by a nut and the other end connected to the air collection cylinder (5) through a pipe. The gas collecting cylinder (5) has a directional collecting shape structure to reduce the mixing of gas with the surrounding environment.

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