Shanghai DEMIKS Power Creates a Full-Scenario Power Environmental Protection Solution
With the accelerated implementation of new power system construction globally, SF6 high-voltage electrical equipment, thanks to its superior insulation and arc-extinguishing performance, has become a core component in 10kV–1100kV transmission and distribution networks, ultra-high-voltage converter stations, underground substations, and rail transit power supply systems. Meanwhile, SF6, a potent greenhouse gas with a GWP of up to 23,500, is strictly regulated by global F-Gas regulations and domestic policies on the control of fluorinated greenhouse gases. SF6 gas recovery, purification, regeneration, and closed-loop reuse have been upgraded from optional operation and maintenance processes to mandatory compliance standards for power engineering, equipment manufacturers, and grid operation and maintenance companies. Against this backdrop of industry upgrading, Shanghai DEMIKS Power , leveraging years of experience in R&D and engineering implementation of power environmental protection equipment, has built a complete SF6 equipment operation and maintenance system. With high-performance SF6 gas recovery, purification, charging, and discharging devices at its core, it matches the operation and maintenance scenarios of all types of SF6 high-voltage equipment, becoming a core service provider for low-carbon and safe operation and maintenance upgrades in the industry.
- The widespread application of all types of SF6 high-voltage equipment is forcing the standardization and upgrading of operation and maintenance technologies.
Currently, mainstream SF6 high-voltage equipment in the power grid has formed a complete product matrix, covering all scenarios of distribution, high voltage, ultra-high voltage, and extra-high voltage. This includes core primary equipment such as SF6 circuit breakers, SF6 load switches, SF6 disconnecting switches/grounding switches, SF6 ring main units (RMUs), GIS gas-insulated switchgear, HGIS hybrid insulated switchgear, GIL gas-insulated transmission busbars, SF6 gas-insulated transformers (GITs), and tank-type SF6 instrument transformers and surge arresters. Compared to traditional open-type equipment, SF6 insulated equipment has a smaller footprint, stronger external insulation resistance to pollution flash-over, and higher operational stability, and is widely used in densely populated urban substations, tunnel transmission, offshore wind power converter platforms, and explosion-proof power supply scenarios.
While equipment has become widespread, long-standing operational and maintenance shortcomings in the industry have become increasingly prominent: traditional maintenance methods often involve simple gas extraction, direct gas discharge, excessive levels of moisture and decomposition products in reusable gas, and a lack of systematic purification and storage methods. This easily leads to equipment failures such as μερική εκκένωση inside GIS systems, contact corrosion, and insulation degradation, while also incurring high environmental penalties and gas procurement costs. According to the latest industry standards IEC 60480 and DL/T 662, the SF6 gas recovery rate must be consistently higher than 95%, and the purity, moisture content, and decomposition products of reusable gas must meet standards. This has driven fully automated SF6 gas recovery and purification devices to become standard equipment in power operation and maintenance projects.
- 2026 Industry Technology Trends: SF6 Maintenance Moving From “Simple Recycling” to “Intelligent Closed-Loop Regeneration”
In the past two years, the pace of technological iteration for SF6 maintenance equipment worldwide has accelerated significantly. The industry has completely moved away from traditional single-function extraction equipment and is now upgrading towards high-precision purification, refrigeration and liquefaction storage, fully automated intelligent control, modular adaptation for multiple scenarios, and data-driven traceability . High-end engineering scenarios are no longer satisfied with basic gas recovery; they require equipment that can simultaneously perform impurity filtration, acid decomposition product removal, deep drying, liquid storage, precise recharging, and pipeline self-inspection, achieving closed-loop management of SF6 with zero emissions throughout its entire life-cycle.
In overseas markets, the tightening of SF6 emission controls under F-Gas regulations in Europe and the United States is forcing the export of complete sets of power equipment and the installation of standardized recycling equipment in overseas power plant projects. Domestically, the implementation of dual-carbon policies and special control schemes for fluorinated gases has led power grids, substation equipment manufacturers, and power engineering companies to comprehensively promote SF6 emission reduction and gas recycling. Driven by evolving market demands, inefficient operation and maintenance equipment is being phased out, and integrated SF6 recycling, purification, charging, and discharging equipment that combines compliance, stability, and high efficiency has become a necessity in the industry.
III. DEMIKS Power Product Matrix: Adapting to All SF6 Equipment Maintenance Needs
As a professional brand focusing on SF6 power environmental protection, Shanghai DEMIKS Power has been deeply involved in the operation and maintenance technology of SF6 high-voltage equipment. Targeting the pain points of operation and maintenance of different voltage levels and different operating scenarios, it has created two core series of SF6 gas recovery and purification devices, which comprehensively cover distribution network emergency repair, factory batch testing, and operation and maintenance scenarios of ultra-high voltage large-capacity gas chambers. They are perfectly compatible with all types of equipment such as GIS, circuit breakers, ring main units, instrument transformers, GIL pipelines, and SF6 transformers.
- Portable SF6 recycling vacuum pump (small trolley type)
Designed for outdoor, scattered maintenance scenarios of small and medium-sized equipment in the 10kV–220kV range, this lightweight unit features omnidirectional casters and is suitable for operations involving small-capacity gas chambers such as switchgear, SF6 load switches, small GIS gas chambers, and tank-type instrument transformers. The equipment integrates vacuuming, recovery, simple purification, and gas filling functions, offering easy operation and high mobility. It can quickly complete on-site equipment depressurization and recovery, as well as precise gas filling after maintenance, perfectly matching the needs of distribution network operation and maintenance, and emergency repair operations. It is the cost-effective choice for grassroots power operation and maintenance projects.
- High-flow-rate cabinet-type SF6 recycling, purification, and storage integrated unit (industrial grade)
Designed for mass production testing in διακόπτης υψηλής τάσης factories, large-capacity gas chambers in 220kV–1100kV UHV GIS systems, long-pipeline GIL systems, and centralized operation and maintenance scenarios in large substations, this equipment features a high-flow oil-free compression system, a cryogenic refrigeration liquefaction unit, multi-stage deep purification units, and a large-capacity liquid storage tank. The equipment supports long-term continuous operation and can simultaneously process gas in multiple circuits, addressing industry pain points such as large gas chamber capacity, slow recovery, incomplete purification, and difficult storage in large equipment. It is a core mainstay equipment for industrial mass production and UHV projects.
- Core Technological Advantages: Aligning with international standards to achieve high-precision closed-loop regeneration
DEMIKS Power’s full range of SF6 gas recovery, purification, charging, and discharging devices adopts the industry’s mainstream cryogenic liquefaction process, integrating a five-stage closed-loop treatment system. Its core performance meets authoritative standards such as IEC 60480 and DL/T 662, demonstrating significant technological advantages. In the recovery stage, the equipment can reduce residual pressure to below 50 kPa, maximizing the capture of residual gas, with a recovery rate far exceeding the industry’s 95% compliance standard. In the purification stage, it is equipped with an activated alumina acid removal unit and a molecular sieve deep drying unit, precisely removing toxic fluorides, metal dust, and moisture from arc decomposition, stably controlling the gas dew point below -40℃, and achieving a regenerated gas purity of up to 99.99%, fully meeting the standards for repeated operation.
The equipment integrates intelligent temperature-controlled liquefaction, automatic pressure regulation, pipeline leak detection, and real-time data monitoring, enabling fully automated unattended operation. After maintenance, the dual-mode inflation system automatically switches between low-pressure gravity flow and high-pressure boosting inflation based on the chamber pressure, precisely matching the rated working pressure of various SF6 high-voltage equipment. This completely eliminates human error and effectively improves equipment maintenance safety and operational efficiency. The oil-free compression system completely eliminates oil and gas pollution, ensuring stable insulation performance of regenerated SF6 gas. This prevents internal corrosion, partial discharge, and insulation aging faults in high-voltage equipment from the source, significantly extending the service life of electrical equipment.
- Value Realization: Safety, Economy, and Compliance Triple Empowerment for Power Industry Upgrading
In terms of equipment safety, the DEMIKS Power SF6 closed-loop operation and maintenance solution eliminates equipment failures caused by moisture and excessive impurities by deeply purifying and regenerating high-purity gas, ensuring the long-term stable operation of core high-voltage equipment such as GIS and circuit breakers. In terms of economic benefits, the equipment enables the recycling of SF6 gas, significantly reducing the cost of purchasing new gas and disposing of waste gas for enterprises, and effectively reducing the operation and maintenance expenses of the power grid and equipment manufacturers. In terms of compliance and environmental protection, it completely eliminates the direct emission of SF6 into the atmosphere, reduces the carbon emissions of power projects, and helps enterprises successfully pass environmental verification, carbon accounting, and export project compliance audits, perfectly adapting to the global dual-carbon development trend.
- Industry Outlook and Brand Strategy
In the future, with the continuous construction of ultra-high voltage power grids, urban underground power grids, and offshore wind power supporting power grids, the installed capacity of SF6 high-voltage equipment will continue to grow, and intelligent, refined, and fully closed-loop operation and maintenance of SF6 will be widely adopted. Shanghai DEMIKS Power will continue to focus on the iteration of SF6 environmental protection operation and maintenance technologies, continuously optimize the automation, intelligence, and modularity of equipment, improve the full range of SF6 recycling, purification, testing, and leak detection products, and continuously provide professional, efficient, and compliant SF6 full life-cycle operation and maintenance solutions for domestic and international power grid operation and maintenance, power complete equipment, and new energy engineering companies, contributing to the green, low-carbon, safe, and efficient development of the global power industry.
Brand: DEMIKS Power (Shanghai DEMIKS)
Contact Email: contact@demikspower.com
