Ventilation and filtration system to prevent the accumulating of SF6 gas in confined and inadequately ventilated environments as a result of electrical failure or sealing problems and the relevant method

Abstract

The invention relates to a ventilation and filtration system developed for the elimination of SF6 gas that may have harmful effects in a confined environment and the operating method of this system. The system includes an SF6 gas sensor, a SCADA / communication system, fan and filtration system, illuminated warning system. The system ensures that the safety systems are automatically activated if the concentration of SF6 gas in the environment reaches dangerous levels.

Description

[0001] DESCRIPTION

[0002] VENTILATION AND FILTRATION SYSTEM TO PREVENT THE ACCUMULATING OF

[0003] SFe GAS IN CONFINED AND INADEQUATELY VENTILATED ENVIRONMENTS AS A RESULT OF ELECTRICAL FAILURE OR SEALING PROBLEMS AND THE RELEVANT METHOD

[0004] Subject of the Invention

[0005] The invention relates to a ventilation and filtration system that enables the detection and removal of SFe gas from the environment in order to prevent the accumulation of gas in confined and inadequately ventilated environments as a result of electrical failure or sealing problems.

[0006] This system aims to create a safe and healthy working environment in confined spaces where SFe gas is used.

[0007] State of the Art

[0008] SFe (Sulphur Hexafluoride) gas is widely used in electricity generation and transmission, especially in high-voltage applications. Thanks to its high dielectric strength and arc extinguishing ability, it is preferred in electrical equipment such as switchgears, circuit breakers and gas- insulated transformers. SFe gas acts as a safe circuit breaker in both insulation and fault conditions, especially in gas-insulated switchgears (GIS). The excellent insulation properties it provides in high voltage lines and equipment enable the design of compact and secure systems.

[0009] Due to faults in the systems and leakage problems, SFe gas, which is 5 times heavier than air, can accumulate at dangerous levels in the environment and pose a serious risk to human health. In such cases, the gas must be disposed of safely from the environment. However, the environmental effects of SFe should not be ignored when removing the gas from the environment.

[0010] The potential harmful effects of SFe gas can be listed as follows:

[0011] 1 . Asphyxiation Effect and Health Threats: Although SFe gas is not directly toxic when inhaled under normal conditions, its high concentration in the environment creates an asphyxiation effect by replacing oxygen. This situation causes workers to face serious health risks, especially in confined areas with limited ventilation.

[0012] 2 . Toxic Compound Formation: SFe gas is not toxic under normal conditions and is a very chemically stable gas. However, under high temperature conditions such as electric arcing, or when it interacts with electricity, SFe gas can degrade to form toxic and corrosive by-products. These by-products include sulphur dioxide (SO2), hydrofluoric acid (HF) and metal fluorides which have adverse effects on human health.

[0013] 3 . Environmental Hazards and Greenhouse Gas Effect: SFe (Sulphur Hexafluoride) is one of the most powerful gases in terms of greenhouse gas effect. Its global warming potential (GWP) is very high and creates much more warming effect than carbon dioxide. Its lifetime in the atmosphere is also quite long, it can remain for about 3200 years. Because of these properties, SFe gas is a major concern from an environmental point of view.

[0014] There are generally no special ventilation systems for SFe in the industry. In such cases, the method applied for the disposal of the gas is to wait for the gas to mix directly with the air over time. This method both creates various occupational health and safety weaknesses and also takes a long time.

[0015] In the state of the art, there are documents on improvements to ventilation and filtration systems developed specifically for SFe gas.

[0016] An example of the state of the art is the utility model document no. CN217404259U. This utility model relates to an SFe comprehensive monitoring system, which aims to solve the problems of real-time online monitoring of SFe gas, automatic alarming when the set limit is exceeded, and providing emergency response. The system includes the data collection device, the master control system and the driver device. Data collection device consists of Figaro sensor, infrared spectrometer, oxygen concentration detector and temperature-humidity sensor. The main control system works integrated with the cloud server and mobile application with wireless communication devices. The driver device includes components such as oxygen generator, ventilation fan and alarm. The system detects SFe gas leaks and ensures oxygen production and air circulation when low oxygen levels are detected in the environment. It also controls ambient conditions to reduce the risk of SFe leakage with temperature and humidity sensors. The user can monitor and manage the system via the mobile application.

[0017] Another example of the state of the art is the utility model document no. CN215525674U. This utility model relates to a device for monitoring SFe gas in the environment. The device was developed to detect SFe gas leaks in high voltage electrical equipment and to increase safety by providing information in case of leakage. The device consists of connection plate, monitoring box, positioning magnetic column and outer frame. The monitoring box includes a gas detector, data transmitter, air inlet pipe, filter, blower, fan and other components. While the bellows ensures air circulation, the gas detector detects the presence of SFe gas and transmits information to the monitoring device through the data transmitter. The fan motor of the device provides air suction, the incoming air is directed to the gas detector and in case of leakage, the detected information is processed and transmitted to the users. The device ensures safe monitoring and management of SFe gas leaks.

[0018] Another example of the state of the art is the utility model document no. CN211400198U. This utility model relates to a high-pressure chamber reversible fan device for substation construction. It is designed to evacuate toxic gases by controlling the ventilation direction of the fans in cases such as SFe gas leaks and fire. The device consists of smoke alarm, temperature detector, SFe detection device, signal receiver, controller, upper and lower fans. The signal receiver receives data from smoke and temperature sensors, while the controller determines the direction of operation of the fans. When there is SFe leakage, the lower fan moves forward, the upper fan moves backward, while in the presence of smoke, the upper fan moves forward, the lower fan moves backward. In case of fire, both fans work forward and contribute to fire fighting process. It is stated that the device shortens the toxic gas evacuation time by changing the direction of the fans according to the operating conditions and can be used in different substation chambers. As a cheap and easily applicable alternative to the inventions mentioned above, a ventilation and filtration system and method has been developed to prevent the accumulation of SFe gas in confined and inadequately ventilated environments as a result of electrical failure or sealing problems.

[0019] Detailed Description of the Invention

[0020] The invention relates to a ventilation and filtration system that detects and removes SFe gas from the environment.

[0021] A purpose of the invention is to prevent problems that may occur in terms of occupational health and safety as a result of the accumulation of SFe gas in the environment.

[0022] Another purpose of the invention is to provide an environmentally friendly and sustainable solution by chemically filtering the SFe gas removed from the environment and preventing harmful components in the gas from harming the environment.

[0023] Another purpose of the invention is to visually warn the people in the environment in case of SFe gas leakage or failure and to immediately inform the people in the environment and to ensure that the necessary safety measures are taken and the environment is evacuated.

[0024] The invention is a ventilation and filtration system to prevent an SFe accumulation, and in its most general form includes;

[0025] - an SFe gas sensor that monitors the SFe level in the area,

[0026] - data monitoring, control and transmission system between the sensors and devices,

[0027] - battery group that provides energy to the system,

[0028] - a fan and filtration group that removes the accumulated SFe gas from the environment and filters it while removing it,

[0029] - in case of SFe leakage or a fault in the environment, an illuminated warning system informing the people in the environment.

[0030] In one configuration of the invention, the data monitoring, control and transmission system is SCADA / communication system. In one configuration of the invention, the filtration includes a chemical filter which chemically filters SFe.

[0031] The method of operation of the system includes the following steps.

[0032] - regular measurement of the SFe level in the environment via the sensor and in case of a fault or leak, detecting that the SFe gas in the environment has reached a dangerous level,

[0033] - transmission of information from the sensor that the SFe gas in the environment has reached dangerous levels to the breaker, illuminated warning system, fan and filtration group via the SCADA / communication system,

[0034] - automatic disconnection of the electric current by the breaker in line with the incoming information,

[0035] - automatic operation of the illuminated warning system in line with the incoming information and warning the people in the environment,

[0036] - in line with the incoming information, the fan and filtration group operate automatically to remove the SFe gas in the environment and to filter the removed gas with a chemical filter so it does not harm the environment.

[0037] An advantage of the system of the invention is that it can be produced at a low cost and is easy to apply since it has a simple operating logic.

[0038] Another advantage of the system in question is that the system can operate in the event of a power outage due to fault or security reasons, thanks to the fact that the communication, fan and illuminated warning system is powered by a battery group.

Claims

CLAIMS1 . It is a ventilation and filtration system for SFe gas disposal, characterized in that it comprises the following:- one SFe gas sensor,- data tracking, control and transmission system,- battery group,- fan and filtration group,- illuminated warning system.2 . It is a system according to Claim 1, wherein the data monitoring, control and transmission system is a SCADA / Communication system.

3. It is a system according to claim 1, wherein the filtration group has a chemical filter that chemically filters SFe.4 . It is a ventilation and filtration method for SFe gas disposal with following properties;- regularly measuring the SFe level in the environment through the sensor and detecting that the SFe gas in the environment has reached a dangerous level in the event of a fault or leakage,- transferring the information that the SFe gas in the environment has reached dangerous levels by the sensor to the breaker, illuminated warning system and fan and filtration group through the SCADA / communication system,- automatic disconnection of the electric current by the breaker in line with the incoming information,- automatic operation of the illuminated warning system in line with the incoming information and warning the people in the environment,- in line with the incoming information, the fan and filtration group operate automatically to remove the SFe gas in the environment and to filter the removed gas with a chemical filter so that it does not harm the environment.