Exquisite Workshop, Strict Process Control
Standard workshop with professional equipment & teams. Strict inspection in every process to manufacture high-standard explosion-proof products.
Positive Pressure Ventilation Type Motor Retrofit for Gas Hazard Zones
Our positive pressure ventilation retrofit is designed for open-frame motors (TK, Y, J series, IP<IP4X) used in flammable gas zones. Before motor startup, safe protective gas is blown into the housing via ductwork to displace internal explosive gas; a continuous micro positive pressure is maintained during operation with gas detectors and positive pressure protectors.
Full workflow includes hazardous gas detector activation, control unit startup, valve & explosion-proof fan operation for gas exchange, and motor startup after ventilation qualification. Our modular TY pneumatic units enable low-fuss maintenance and long-term stable running for chemical plant production lines.
We upgrade regular rooms inside flammable gas or combustible dust explosion zones into certified positive pressure explosion-proof spaces. The positive pressure system maintains stable micro positive pressure indoors, preventing external explosive gas and dust infiltration effectively. Our TY series purge devices with 3C certification use full pneumatic drive to eliminate ignition hazards. Supported by our national expert R&D team and patented technology system, we tailor room size, ventilation flow and pressure parameters per client site hazard division. Thousands of successful room retrofit cases cover petrochemical storage, coal chemical workshops and cement production hazardous zones nationwide.
We renovate standard electrical cables and wiring laid in flammable gas and combustible dust hazardous areas into explosion-proof wiring systems complying with national and international standards. The revamp integrates sealed cable glands, positive pressure purge interfaces and flame-retardant explosion-proof conduits matched with our TY control devices. Our company owns full construction qualifications including work safety permits and petrochemical contractor safety training certification, the sole motor retrofit contractor with this qualification in China. We deliver one-stop wiring assessment, material supply, installation, inspection and certification services for energy and chemical enterprises.
We offer official safety production testing and inspection services for explosion-proof motors and electrical equipment, issuing state-recognized formal inspection reports. Our test lab matches national standard testing conditions for gas and dust explosion-proof performance, positive pressure system stability, purge flow and sealing capacity. Supported by our in-house expert team who co-formulated national industry standards, we can test post-retrofit equipment and original factory explosion-proof products. Testing data supports IECEx, ATEX, CE and domestic CCC/Ex certification applications for clients targeting global export markets.
Professional Explosion-proof Retrofit Service for Electrical Equipment
We provide full-range explosion-proof renovation services for electrical devices including motors, instruments, wiring and explosion hazardous area rooms, plus testing for explosion-proof electrical and instrument products. Our 8 core retrofit types cover increased safety motor upgrade, non-ex motor conversion, explosion grade improvement, dust-proof motor modification, instrument cabinet revamp, positive pressure room reconstruction, circuit upgrading and product inspection. We adopt self-developed TY series purge devices with imported core parts, full pneumatic drive to eliminate electric spark risks. Post-renovation tests by third-party certified institutes issue official explosion-proof certificates. With top expert teams, we deliver customized explosion-proof solutions for petrochemical, coal chemical, steel and cement industries.
Inherently Safe Motor Explosion-proof Retrofit Solutions
Our increased safety type motor explosion-proof transformation targets original increased safety motors without purge ventilation units. After professional revamp, motors fully comply with national standards and obtain formal explosion-proof certification. The whole transformation uses our self-designed TY purge equipment with 3C compulsory certification, modular structure for easy maintenance and stable operation. We own 2 invention patents and over 60 utility patents, and co-drafted the industry guideline Technical Guide for Positive Pressure Explosion-proof Retrofit of Rotating Electrical Machines. Our professional R&D team with national-level experts ensures every motor upgrade meets strict hazardous zone safety standards.
We upgrade ordinary non-explosion motors and electrical appliances used in explosive hazardous zones into certified explosion-proof products matching local zone classification. Two mature technical routes are available: positive pressure ventilation type for open-frame motors below IP4X and leakage compensation type for fully enclosed self-fan cooling motors above IP44/IP54. Our TY series pneumatic purge units avoid electric ignition sources completely. We have revamped over thousands of devices across petrochemical, energy and metallurgy sectors without impairing original equipment performance, featuring short construction cycles and reliable post-project feedback from global clients.
Explosion Protection Grade Boost Modification for Motors
For motors and electrical equipment whose existing explosion grades fail site requirements (e.g. upgrading IIB to IIC level for chemical plants), we offer full grade promotion retrofit packages. The whole process includes junction box explosion-proof restructure, explosion-proof temperature instrument replacement, main body purge device installation, integral sealing treatment, purge exchange test verification and official explosion certificate application. Supported by our advanced simulation software system (SolidWorks, ANSOFT, ANSYS), we analyze mechanical, electromagnetic and cooling performance precisely to guarantee upgraded devices satisfy IIC, IIB and dust hazardous area protection standards for mining, chemical and cement plants.
Complete Explosion-proof Transformation for Electrical Wiring Systems
We renovate standard electrical cables and wiring laid in flammable gas and combustible dust hazardous areas into explosion-proof wiring systems complying with national and international standards. The revamp integrates sealed cable glands, positive pressure purge interfaces and flame-retardant explosion-proof conduits matched with our TY control devices. Our company owns full construction qualifications including work safety permits and petrochemical contractor safety training certification, the sole motor retrofit contractor with this qualification in China. We deliver one-stop wiring assessment, material supply, installation, inspection and certification services for energy and chemical enterprises.
Authorized Explosion-proof Electrical Product Testing & Inspection
We offer official safety production testing and inspection services for explosion-proof motors and electrical equipment, issuing state-recognized formal inspection reports. Our test lab matches national standard testing conditions for gas and dust explosion-proof performance, positive pressure system stability, purge flow and sealing capacity. Supported by our in-house expert team who co-formulated national industry standards, we can test post-retrofit equipment and original factory explosion-proof products. Testing data supports IECEx, ATEX, CE and domestic CCC/Ex certification applications for clients targeting global export markets.
Positive Pressure Ventilation Type Motor Retrofit for Gas Hazard Zones
Our positive pressure ventilation retrofit is designed for open-frame motors (TK, Y, J series, IP<IP4X) used in flammable gas zones. Before motor startup, safe protective gas is blown into the housing via ductwork to displace internal explosive gas; a continuous micro positive pressure is maintained during operation with gas detectors and positive pressure protectors. Full workflow includes hazardous gas detector activation, control unit startup, valve & explosion-proof fan operation for gas exchange, and motor startup after ventilation qualification. Our modular TY pneumatic units enable low-fuss maintenance and long-term stable running for chemical plant production lines.
Leakage Compensation Motor Retrofit for Sealed Self-cooling Gas Zone Motors
Leakage compensation transformation fits fully enclosed self-fan cooling motors (IP44/IP54 air/water cooled) in flammable gas areas. Dry clean air or inert protective gas fills the motor cavity pre-start to reach a minimum 50Pa internal pressure above ambient. Tiny gas replenishment offsets joint leakage to sustain positive pressure and block external explosive gas ingress. The system features pre-purge, timed purge, leakage compensation and interlock shutdown modes with PLC signal output. Imported core parts boost reliability, and post-rebuild motors resist corrosive gas, condensate and oil mist for long service life.
High-precision Simulation Design for Explosion-proof Retrofit Systems
We apply world-leading design software including SolidWorks, ANSOFT and ANSYS for full simulation analysis before any explosion-proof retrofit project. SolidWorks delivers powerful 3D modeling; ANSOFT completes transient electromagnetic field analysis; ANSYS handles multi-physics coupling field simulation. We evaluate motor mechanical performance, electromagnetic efficiency, ventilation cooling effect and positive pressure stability comprehensively to form precise customized retrofit schemes. Our technical team has over 80% staff with mature motor & electrical industry experience, including 2 national-level experts and 10 senior engineers for reliable simulation and on-site execution.
Dust Explosion-proof Retrofit for Ordinary Industrial Motors
Our dust explosion-proof transformation adapts non-ex motors and electrical equipment for combustible dust hazardous areas in line with GB/T3836 standards. Two technical solutions are supplied: positive pressure ventilation for open motors under IP4X and leakage compensation for sealed cooling motors over IP44. Before startup, clean protective gas is purged into motor housings to form constant micro positive pressure, blocking external combustible dust intrusion. Our fully pneumatic TY control systems have no electric spark risks. We support full-cycle testing, certification application and after-sales technical guidance for grain processing, pharmaceutical, wood and metal dust workshops.
We upgrade regular rooms inside flammable gas or combustible dust explosion zones into certified positive pressure explosion-proof spaces. The positive pressure system maintains stable micro positive pressure indoors, preventing external explosive gas and dust infiltration effectively. Our TY series purge devices with 3C certification use full pneumatic drive to eliminate ignition hazards. Supported by our national expert R&D team and patented technology system, we tailor room size, ventilation flow and pressure parameters per client site hazard division. Thousands of successful room retrofit cases cover petrochemical storage, coal chemical workshops and cement production hazardous zones nationwide.
We reconstruct non-explosion electrical instrument cabinets deployed in flammable gas or combustible dust hazardous zones into zone-matched explosion-proof enclosures. Customized positive pressure protection structures are integrated with our self-developed TY purge control units, adopting imported core pneumatic components for spark-free operation. Our engineering team holds complete construction qualifications including general contracting for mechanical, electrical and power projects. We provide turnkey services covering pre-design, on-site construction, safety supervision, acceptance and post-warranty maintenance, serving Sinopec, CNPC, CNOOC and Yuntianhua Group with stable long-term cooperation.
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