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Professional Explosion-proof Electrical Equipment for Oil, Chemical and Power Hazardous Areas

What main businesses do you provide for overseas clients?

We supply full-series explosion-proof electrical products, positive pressure control systems, dust explosion protection equipment, explosion-proof robot solutions, motor & electrical explosion-proof retrofit, product testing, regular inspection, safety assessment and professional technical training services.

 

Do you support international business and overseas order delivery?

Yes. We have complete foreign trade docking procedures, sufficient spot inventory of standard models, and can arrange international logistics and delivery for global customers.

How do you handle customer inquiries and quotation requests?

We first confirm the actual working conditions of the site, then recommend standard spot products or complete set solutions. We will combine benchmark project cases to make formal quotations for clients.

Can you provide product training materials for overseas partners?

Definitely. We offer complete product training course PPT outlines, product operation videos and scene-based application materials for internal and client training.

Do you provide technical document review services?

Yes. Our professional team conducts document review, site safety assessment and puts forward targeted rectification plans for explosion-proof projects.

 Are your products suitable for global hazardous area standards?

All products comply with mainstream international explosion-proof standards. We can also cooperate with clients to complete standard adaptation according to local regional requirements.

Can you provide after-sales technical guidance for overseas projects?

We provide remote technical guidance all year round. For key projects, we can also arrange professional engineers for on-site service as required.

Do you accept customized products besides standard spot items?

Yes. While we have abundant spot inventory, we also support non-standard customized production according to clients’ special working conditions and technical parameters.

 Will you share successful project cases for reference?

Sure. We can provide our classic benchmark projects across multiple industries as reference for your project promotion and solution design.

 Do you offer professional operation and maintenance training?

Yes. We provide systematic professional training for on-site operators, maintenance staff and engineering technicians of explosion-proof facilities.

What is the application of your explosion-proof control cabinet?

Our explosion-proof control cabinet is used to place precision components, and it is applicable to IIA, IIB, IIC flammable gas hazardous areas.

What protection levels do your explosion-proof electrical products have?

Our products mainly adopt IP65 and IP54 protection grades to adapt to different on-site dust, water and corrosion environments.

What are the main technical advantages of your explosion-proof electrical equipment?

Our explosion-proof electrical products feature low starting pressure, low wind resistance, maintenance-free performance and complete supporting solution packages.

What voltage specifications do your explosion-proof electrical products support?

We have multiple voltage options for different industrial working conditions. You can inform us of the required voltage and explosion-proof grade for accurate product recommendation.

Can your explosion-proof cabinets be used for inter-cabinet positive pressure renovation?

Yes. We provide professional inter-cabinet positive pressure explosion-proof renovation services for existing control cabinets on site.

Do your explosion-proof electrical products have complete explosion-proof marks?

All finished products are marked with standard explosion-proof signs, which meet the requirements of domestic and international hazardous area use.

 Can you solve grounding problems for on-site explosion-proof lines?

Our engineering team is professional in handling common problems such as wiring and grounding in explosion-proof sites and provides rectification solutions.

What types of flammable gas do your explosion-proof electrical products adapt to?

They are applicable to common flammable gases in industrial sites, covering the gas types required for Zone 2 hazardous areas.

Are explosion-proof control cabinets available in stock?

Most standard models of explosion-proof control cabinets are in spot inventory and can be delivered quickly after order confirmation.

What is the service life of your standard explosion-proof electrical products?

With standard installation and regular simple maintenance, our explosion-proof electrical equipment has a long service life and stable operation.

What is the function of the compressor purging system?

The compressor purging system uses medium dilution to reduce the concentration of flammable gas inside the equipment and ensure safe operation in explosion hazardous areas.

What are the advantages of your positive pressure explosion-proof systems?

Our positive pressure products have low starting pressure, low wind resistance, maintenance-free design, and can be matched with a full set of system solutions.

What flow parameters does your purging system support?

We have multiple flow specifications for purging systems to match different equipment sizes and on-site ventilation demands.

Is the positive pressure system applicable to Zone 2 hazardous areas?

Yes. Our positive pressure and compressor purging systems are specially designed and widely used for Zone 2 explosion hazardous areas.

Does the purging system need daily manual maintenance?

It adopts a maintenance-free design under normal working conditions, which greatly reduces daily operation and maintenance costs.

Can the positive pressure system be retrofitted for old equipment?

Yes. We provide on-site positive pressure renovation services for old electrical cabinets and production equipment.

What are the specifications of your explosion relief panels?

The size range of explosion relief panels is from 150mm to 910mm, with complete specifications for different installation sizes.

 

 

 

What is the opening pressure of your explosion relief panels?

We have different opening pressure options for explosion relief panels to adapt to various dust and gas explosion-proof sites.

What temperature grades do explosion relief panels have?

Our products are divided into normal temperature type and high temperature type, suitable for low and high temperature working environments respectively.

Q: What are the core functions of explosion relief panels? A: The explosion relief panels have excellent flame resistance and noise reduction effects to protect personnel and equipment from explosion impact.

 

 

 

 

Are explosion relief panels in spot stock?

Conventional sizes of explosion relief panels are available in stock to shorten the delivery cycle for overseas orders.

Do explosion relief panels support outdoor installation?

Normal and high temperature types can be selected according to indoor or outdoor installation environments.

What is the function of the spark detection system?

The spark detection system is used for dust explosion prevention in industrial pipelines, which can detect sparks in real time and execute protection actions quickly.

 

 

 

 

Which hazard level is the spark detection equipment applicable to?

Our spark detection and extinguishing equipment is applicable to Zone 5 dust explosion hazardous areas and related industrial pipelines.

Does the spark detection system need regular inspection?

The equipment runs stably with low failure rate. We suggest regular routine inspection to keep the system in optimal working state.

What types of special explosion-proof robots do you have?

We develop inspection, fire-fighting and valve-closing explosion-proof robots, which are mainly applied to hazardous chemical industrial parks.

 

 

 

Can explosion-proof robots work continuously in dangerous areas?

The robots are professionally explosion-proof modified, suitable for long-term patrol and operation in high-risk hazardous chemical areas.

Do you provide robot explosion-proof modification services?

Yes. We provide overall explosion-proof transformation services for various brand industrial robots and special service robots.

What are the advantages of your explosion-proof robots?

Our explosion-proof robots support full modification and adaptation of multiple brands, and can operate normally in dual gas and dust hazardous environments.

 

Do you provide motor and electrical equipment explosion-proof grade upgrade service?

Yes. We offer professional explosion-proof transformation and explosion grade upgrade services for on-site motors and all kinds of electrical equipment.

 

What testing services can you provide?

We provide product testing, site acceptance inspection and periodic regular inspection services for explosion-proof facilities and equipment.

 

 

 

 

How to confirm product models and technical requirements before quotation?

Please tell us your application industry, equipment type, installation location, protection grade and explosion-proof requirements, and we will recommend products and quote accordingly.

 Will you make targeted rectification plans for unqualified explosion-proof projects?

After site inspection and safety assessment, our professional team will issue formal rectification plans and technical guidance.

What main technical solutions do you adopt for explosion-proof retrofit?

We mainly apply positive pressure ventilation type and leakage compensation technology. We also provide explosion grade upgrading, integral sealing and structural reconstruction solutions for different equipment.

 

 

How does the positive pressure retrofit technology work?

We form stable micro positive pressure inside the equipment cavity to block external flammable gas or dust from entering, so as to eliminate explosion risks fundamentally.

 

 

Will the original performance of equipment be affected after explosion-proof retrofit?

Our mature technology ensures the original power, operating efficiency, heat dissipation and running parameters of equipment remain unchanged after renovation.

Can you upgrade explosion protection grade from IIB to IIC?

Yes. We provide professional grade upgrading service from IIB to IIC, including structural modification, component replacement and overall sealing treatment to reach higher explosion standard.

 

 

Can you upgrade common non-explosion equipment to certified explosion-proof equipment?

Definitely. We transform ordinary industrial equipment into standard explosion-proof products that comply with international and domestic explosion-proof regulations.

 

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Can you upgrade common equipment to dust explosion-proof grade?

We offer professional dust explosion-proof grade renovation, making equipment adapt to combustible dust hazardous areas such as grain, wood and metal processing workshops

How long is the general construction period for a single equipment retrofit?

The construction cycle depends on equipment type and transformation scope. A single standard equipment usually takes 1 to 3 working days, and large projects will be scheduled in advance.

 

 

 Can you arrange construction without long-time production shutdown?

We optimize construction procedures and adopt phased construction plans to minimize production downtime and reduce economic loss for your factory.

 

 

 

Is explosion-proof retrofit more cost-effective than purchasing new explosion-proof equipment?

Yes. Retaining your original equipment greatly cuts procurement cost. Meanwhile, the short construction cycle lowers shutdown loss, with obvious economic benefits.

Will the renovated equipment pass official safety acceptance?

All retrofit projects strictly follow explosion-proof standards. We support third-party testing and official site acceptance, with a high pass rate.

 

 

What standards do your explosion-proof retrofit projects comply with?

Our construction follows GB/T 3836 series national standards and relevant international IEC explosion-proof standards, meeting requirements for domestic and overseas use.

 

 

Do you conduct internal testing before official acceptance?

We carry out comprehensive pre-test on pressure, sealing, air flow and control system after construction to ensure stable equipment operation.

Can renovated equipment apply for international explosion-proof certifications?

Yes. We assist clients to apply for IECEx, ATEX, CE, UL and other international certifications to meet overseas market access requirements.

 

 

Can your retrofit projects adapt to different countries’ local explosion-proof rules?

Our technical team is familiar with mainstream explosion-proof regulations worldwide. We adjust schemes to match local standards for overseas projects.

 

 

Do you provide English technical documents for overseas projects?

We offer full English versions of construction drawings, test reports, operation manuals and certification materials for foreign customers.

Does your company have formal construction qualifications for explosion-proof projects?

We hold complete engineering contracting qualifications, safety production permits and professional explosion-proof construction credentials recognized by the industry.

 

 

Are your construction workers professionally trained?

All on-site engineers and construction personnel have received systematic professional training and hold corresponding operation certificates.

 

 

Do you have rich experience in large-scale industrial retrofit projects?

We have completed numerous explosion-proof renovation projects for petrochemical, coal chemical, metallurgy and cement large enterprises with mature project experience.

 What is the warranty period for explosion-proof retrofit projects?

We provide long-term warranty service for all renovation projects. During the warranty period, free maintenance and fault troubleshooting are available.

 

 

Do you provide regular periodic inspection for retrofitted equipment?

We offer regular on-site inspection, performance re-test and maintenance services to ensure long-term safe operation of explosion-proof equipment.

 

 

How to deal with equipment failure after explosion-proof retrofit?

We provide 24-hour remote technical support. For complex faults, we will arrange engineers to the site for maintenance as soon as possible.

Can you do explosion-proof retrofit for equipment in high-temperature workshops?

We adopt high-temperature resistant materials and customized structural design, which is suitable for explosion-proof renovation in high-temperature working sites.

 

 

 

Can you carry out renovation for equipment in strong corrosion environment?

We use anti-corrosion materials and sealing technology to adapt to chemical workshops and other strong corrosion hazardous areas.

 

 

Can you provide inter-cabinet positive pressure transformation service?

Yes. We specialize in inter-cabinet positive pressure retrofit for existing control cabinets to solve potential explosion risks between cabinet groups.

What is the main business of Tianjin Tovent Energy-saving Technology Co., Ltd.?

We are a national high-tech enterprise focusing on the design, R&D and production of explosion-proof electrical equipment. Our product lines cover explosion-proof electrical appliances, positive pressure control systems, dust explosion protection equipment and explosion-proof transformation for special robots, serving industries such as petroleum, chemical, water conservancy, steel, cement and electric power.

When was your company founded and what key development milestones have you experienced?

The company was established in Tianjin in 2016. It was selected into Tianjin’s “113 Plan” and “Eagle Plan” successively, certified as a national high-tech enterprise in 2019, and relocated to Liandong U-Valley Industrial Park in Xiqing District in 2023 with a 1600 square meters R&D and production workshop.

What qualifications and management system certifications does your company hold?

We have obtained national high-tech enterprise certification, CCC certification for explosion-proof products, and three major system certifications including ISO 9001 quality management system, ISO 14001 environmental management system and ISO 45001 occupational health and safety management system. We also own dozens of invention patents and utility model patents.

Can your products apply for international explosion-proof certifications?

Yes. Our products have domestic Ex and CCC certificates. We can also apply for international certifications such as IECEx, ATEX, UL and CE according to customers’ requirements to meet global market access standards.

What core product series do you mainly provide?

Our main products are divided into three major categories: explosion-proof electrical products, positive pressure control products and dust explosion protection products. We also launch new businesses including explosion-proof transformation for industrial robots and emergency special robots.

What products are included in your explosion-proof electrical series?

This series includes explosion-proof junction boxes, explosion-proof power & lighting distribution boxes, positive pressure explosion-proof control cabinets, dust explosion-proof control cabinets, explosion-proof button boxes, explosion-proof cabins, explosion-proof air conditioners and other supporting explosion-proof pipe fittings.

What is the working principle of your positive pressure explosion-proof system?

The positive pressure system maintains a slight positive pressure inside the equipment shell. Since gas flows from high pressure to low pressure, external explosive gas or dust cannot enter the shell, which effectively isolates ignition sources and achieves explosion-proof effect.

What are the advantages of your TYPZ series positive pressure control products?

The products adopt full pneumatic design without additional power supply for high safety. They support a wide flow range, integrate imported core components, and can remove condensed water and dust inside electrical equipment. All models have complete domestic explosion-proof certificates and CCC certificates.

What are the flow specifications of different models of TYPZ positive pressure control devices?

TYPZ-1ZY: 200~800 NL/min; TYPZ-2ZY: 500~1500 NL/min; TYPZ-6ZY: 2000~6000 NL/min; TYPZ-8ZY: 7000~12000 NL/min. Customized models are also available.

What scenarios are the positive pressure control products suitable for?

They are applicable to Zone 1, Zone 2 flammable gas hazardous areas and Zone 21, Zone 22 combustible dust hazardous areas, covering most factory explosion-proof sites except Zone 0.

What dust explosion protection products do you supply?

We provide FVDS flameless venting devices, RD explosion venting panels, EPVS single-way explosion isolation valves, spark detection and extinguishing systems, and explosion suppression systems, which are widely used in dust-related explosion-risk industries.

What industries are your dust explosion protection products mainly applied to?

They serve grain processing, food, tobacco, chemical, metallurgy, electric power, cement, pharmaceutical, wood processing and metal processing industries, aiming at dust hazards of dust collectors, silos and conveying pipelines.

What new technological achievements has your company independently developed?

Our self-developed pneumatic timer and positive pressure control device for dust environments have passed the scientific and technological achievement appraisal, reaching the domestic leading level. The pneumatic timer has entered small-batch trial production.

Which well-known enterprises and institutions do you have R&D cooperation with?

We maintain long-term R&D cooperation with Huazhong University of Science and Technology, Tianjin University of Science & Technology, as well as famous brands such as Festo, SMC, WAROM and Helonex. We also cooperate with Tsinghua University and Harbin Institute of Technology on special robot projects.

Do you provide explosion-proof modification services for industrial robots?

Yes. We can complete explosion-proof transformation for mainstream industrial robots such as KUKA and Estun, including sealing transformation of robot body, positive pressure protection of control system and matching positive pressure air purge units.

What is the application of your emergency special explosion-proof robots?

Our emergency valve-closing robots are mainly used in petrochemical, gas, hazardous chemical storage and coal chemical industries. They can realize automatic valve closing and material cut-off to deal with leakage, fire and explosion emergencies.

What design and manufacturing standards do your explosion-proof products follow?

Our products are strictly manufactured in accordance with GB/T 3836 series national standards, GB 50058, GB/T 50770 and other industrial standards, and also comply with relevant international explosion-proof standards.

Which large enterprises have you provided products and services for?

Our long-term partners include China National Petroleum Corporation, Sinopec, CNOOC, China Energy Investment, Yanchang Petroleum, Shenzhen Gas, Jinneng Petrochemical, Yuntianhua Group and other well-known domestic enterprises.

Can you provide customized explosion-proof products and solutions?

Yes. We support personalized customization of product size, structure, flow rate and function. We can also design overall explosion-proof system solutions according to customers’ on-site working conditions and hazard classification.

What overall service support can your company provide for customers?

We provide one-stop services including pre-sales scheme design, product production, on-site installation guidance, after-sales maintenance and full life-cycle technical support, adhering to the service tenet of customer satisfaction and reputation first.

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