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Positive Pressure Purging System

Comply with GB3836.5 & IEC60079, this positive pressure purge system fits Zone1/2 hazardous sites with IIC flammable gas like hydrogen. It runs pre-purge & leakage compensation with 5×cavity volume air replacement. Customizable pressure alarm & relief setting, air/nitrogen optional gas source, modular pipeline, DCS communication available, widely applied in petrochemical explosion-proof retrofit.

Increased Safety Purging System

Designed per GB3836.3 for Ex-e high voltage motor pre-start purge, it calculates purge time via cavity volume algorithm to exhaust combustible gas before power-on. Low-flow micro-pressurization saves gas consumption, centralized control for multiple over-1kV motors, common in pharmaceutical & lithium plant.

Cabinet Positive Pressure Purge Unit

Compact cabinet purge unit tailored for PXK pressurized cabinet with in-cabinet installation, realizing PLC/inverter cooling & explosion-proof purge. 3-stage precision air filter for moisture proof, 50~120Pa preset working pressure with auto overpressure relief for control cabinet in Zone1/2.

Building Positive Pressure Purge Equipment

Zoned building pressurization system for hazardous workshop with 1~16 independent purge loops & adjustable 10~300Pa zoning pressure. Nitrogen purge links exhaust fan for anti-asphyxiation, pre-filter dryer prevents dust ingress, ideal for chemical warehouse enclosed ventilation upgrade.

Application Fields & Scenes of Positive Pressure Purging System

  • Petrochemical Plants：Shield enclosures from combustible gas intrusion.
  • Fine Chemical Workshops：Eliminate mixed explosive gas inside cabinets.
  • Hydrogen Workshop：Block hydrogen permeation into electrical housings.
  • Chlor-Alkali Factory：Prevent corrosive gas from damaging inner devices.
  • Reactor Site：Maintain safe positive pressure for sealed reactor cabins.

Application Fields & Scenes of Increased Safety Purging System

  • HV Motor Station：Purge residual gas before high voltage motor startup.
  • Chemical Pump House：Clear vapors sealed inside pump driving motors.
  • Coal Preparation Plant：Protect large driving Ex-e motors on site.
  • Mine Substation：Remove combustible gas around underground motors.
  • Fan Room：Purge fan shell interior before equipment powers on.

Application Fields and Scenarios of Positive Pressure Cabinet Purge Equipment

  • PLC Control Room：Cool and protect built-in PLC control cabinets.
  • Inverter Room：Dissipate heat inside variable frequency control boxes.
  • Instrument Area：Keep instrument cabinets dry and airtight steadily.
  • DCS Central Room：Prevent hazardous gas entering core DCS cabinets.
  • Field Junction Box：Stop corrosive gas from damaging inner circuits.

Application Fields and Scenarios of Building Positive Pressure Purge Device

  • Hazardous Chemical Workshop：Maintain whole workshop safe positive pressure.
  • Raw Material Warehouse：Block leaked gas from entering storage space.
  • Chemical Lab：Purge harmful volatile air inside experiment rooms.
  • Flammable Raw Material Room：Stop outside flammable gas backflow inward.
  • Pilot Test Workshop：Isolate volatile chemicals inside test rooms.

Standard Custom Safety Purge Systems

  • Интегрированный дизайн: All gas circuit, control & relief parts are integrally assembled.
  • Stable Output: Closed-loop differential monitoring cuts faults and improves operation uniformity.
  • Compliant Production: Standardized craft meets ATEX & IECEx international quality rules.
  • Cost Saving: Modular structure effectively reduces long-term maintenance expenses.
  • Flexible Custom: Parameters, housing & gas source adapt to global site conditions quickly.
  • R&D Strength: Professional explosion-proof R&D team owns dozens of patents. Following global standards, our full-range purge solutions secure worldwide hazardous industrial projects.

Demands for old equipment explosion retrofit keep growing, while split spare parts bring high maintenance cost. Integrated control, pressure test and vent panel enables convenient onsite refit without large cavity dismantling.

High-voltage Ex-e motors need full pre-start gas removal, and outdated timers often lead to insufficient air exchange. Calculated purge time plus panel-mounted gauge complies with GB3836.3 rules. Graded control buttons support multi-motor linkage for most mining and chemical pump house applications.

Conventional control cabinet retrofit becomes popular, split modification leads to messy wiring and frequent faults. All-in-one valve & pressure unit needs no scattered fittings with adjustable opening size, enabling low-cost explosion upgrade for most old low-voltage switch cabinets.

Aged workshop original ventilation cannot meet updated safety rules with high full replacement cost. Existing air ducts can be reused, independent pressure control and matched louver cutout reduce construction work for most renovated chemical storage and production workshops.

Customized purge products meet diversified global hazardous-area demand. Round-clock stable operation lifts practical output efficiency. Quick parameter setup improves customized order responsiveness.

Compliance with GB, IECEx, ATEX simplifies global trade layout. Complete certification docs support routine safety audits. Reliable performance fosters long-term industrial partnerships.

Select our full purge series for steady business growth and gain advantages in competitive explosion-proof market.

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  • We source bulk increased safety purge units for our export high-voltage Ex-e motors. Its timing program complies with national standards, with customizable voltage to fit motors of various cavity volumes. Stable delivery helps our ATEX certification preparation, so we sign long-term fixed procurement agreements.

  • We source four types of purge products for different industry clients: Ex-e motor purge, cabinet purge, building positive pressure unit and standard positive pressure purge system. Unified control logic reduces our spare parts inventory cost, parameter customization covers petrochemical, electrical manufacturing demands. Steady supply enables us to deliver complete set solutions to end customers on schedule.

  • All our explosion-proof instrument control cabinets use their dedicated purge systems. Automatic pressure compensation offsets minor air leakage inside cabinet, pre-set safety interlock avoids abnormal pressure risks. Modular design shortens our cabinet R&D iteration cycle, consistent performance gains consistent orders from chemical plant clients.

  • Our industrial park EPC project purchased cabinet purge and building positive pressure purge products in batches. Same core control technology cuts our spare part stocking categories, unified communication protocol eases later system unified management. Stable product qualification rate helps our project smoothly pass third-party safety acceptance inspection.

  • We export four-series purge products to Southeast Asian hazardous-area clients, cooperating with this supplier for two years. Customizable pressure and timing fit local different national certification codes, strict outgoing inspection guarantees consistent batch quality. On-time bulk delivery supports our monthly container shipment arrangement for overseas buyers steadily.

Сопутствующие товары

Alternative Names

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