Cables are basic equipment for transmitting electrical energy and information. They are known as the “blood vessels” and “nerves” of the national economy. It can be said that urban production and life, and all walks of life are inseparable from cables. In the past, cable transmission mainly used overhead cable lines, which not only worsened the urban environment, but also brought troubles and difficulties to urban management. What’s more terrible is that it is like a sword of Damocles, threatening people’s lives and safety at all times. On the contrary, underground transmission of cables can not only enhance the reliability of power supply, but also enhance the transmission capacity of lines, eradicate visual pollution, and beautify the urban environment, so underground cables have become the best choice.

The application of underground cables has increased the demand for cable duct sealing technology. Traditional cable duct sealing methods mostly use cement sealing, and use cement, plugging king, anti-cement and other materials to seal and plug the pipeline in sections. The disadvantage is that the material and the pipeline will lose the waterproof effect due to thermal expansion and contraction, and once fixed, it is basically immovable. When a fault occurs, it is difficult to carry out work, and the cost is high. With the advancement of technology, the advantages of inflatable cable duct seals have gradually become more prominent. They are waterproof, anti-theft, and anti-rat in one step. They can be operated with power on during maintenance, and are convenient, safe, and reliable. Therefore, cable duct seals, as an important part of installation facilities, are particularly important for protecting people’s lives and property safety. Therefore, the upgrading and transformation of the sealing system requires high standards and strict requirements to go hand in hand.

TST seal, a world-leading supplier of cable duct sealing systems, was founded in Shenzhen, China in 2003. It has always been committed to developing safe and reliable pipeline and cable safety sealing systems for the global market. With years of expertise and focus, TST seal has rapidly grown into a global market leader in modular sealing systems. TST seal insists on using the most flexible, convenient, and innovative sealing system to protect the openings through which cables and pipes pass, preventing water, gas, dust, corrosive substances, fire, and electromagnetic interference from entering the seal through the openings, thereby protecting the safe operation of each device and protecting life and property safety.

Patented technology + close to customers + full life cycle service consolidates its advantageous position in China

The patented technology of variable diameter (multi-path) sealing module, based on the sealing module with peelable core layer, can ensure the matching of cables and pipes of various specifications, greatly simplifying the design, installation and logistics, and can easily cope with the emergencies caused by changes in the number or specifications of cables at the construction site, and can save materials, reduce waste, and completely change the traditional cable laying and pipe installation process.

ALEX, Chief Operating Officer of TST seal, said: “The patented technology of variable diameter (multi-path) sealing module has strong adaptability and flexibility, and can adapt to cables and pipes of various specifications, with fire protection, lightning protection, explosion protection, waterproof, insect protection, dust protection and other functions. At the same time, it can meet higher electromagnetic shielding and grounding requirements. No matter how the number and specifications of cables and pipes used by customers change, our products can guarantee the sealing effect.” With the rapid development of technology, TST seal’s MultidiameterTM (multi-path) patented technology is also constantly innovating and improving. ALEX, COO of TST seal, added: “In the past year, our company has been continuously increasing investment and actively promoting innovation. The innovation of MultidiameterTM patented technology is that it can perform electronic shielding and cable duct sealing in 10-meter-deep underground engineering construction. It can be waterproof for a long time, and even flood-proof. Compared with the past, it has made great progress.”

Having a patented technology is far from highlighting the advantages of TST seal. In more than 20 years in China, TST seal has always insisted on being close to customers, understanding and meeting customer needs, and striving to provide customers with safe and reliable solutions. “We not only pay attention to the value of the product itself and the deep-level economic benefits behind it, but we pay more attention to whether the sealing products and solutions we provide can bring cost-effectiveness to customers. From early design, mid-term installation to later maintenance, our company tries its best to provide customers with the most convenient and flexible full life cycle services.”

“Practice is the only criterion for testing truth.” TST seal has not shelved the concept of providing customers with full life cycle services, but has been taking action and on the road. As we all know, UHV, as the focus of my country’s infrastructure construction, has been included in the “13th Five-Year Plan”. In the process of UHV construction, cable sealing needs to have the ability to shield the incoming and outgoing cables and openings from electromagnetic fields and to protect against lightning and surges. TST seal, as the world’s leading supplier of cable and pipe sealing systems, has successfully participated in the construction of many major UHV power grid projects in China with its safe and sustainable sealing solutions and close proximity to customers, striving to provide customers with the concept of full life cycle services.

In the early stage of the project, TST seal aims to deeply understand customer needs and put forward the most professional and optimized engineering solutions and suggestions. In the middle of the project, TST seal carefully built a model project for customers, made full preparations for the smooth progress of the installation work, conducted regular safety inspections, and issued installation inspection reports. In the later stage of the project until the completion of the project, TST seal promised to escort customers’ sealing safety indefinitely with practical actions.

In the construction of the ±800 kV UHV DC transmission project at the Three Gorges Hydropower Station, TST seal’s cable penetration sealing solution provides all-round electrical protection for power equipment and facilities, which not only ensures the safe and stable operation of the power grid system, but also effectively improves long-term cost-effectiveness. The project is large-scale, short-term and heavy-duty, requiring all partners to respond quickly. TST seal can cooperate with the project progress at the first time from design planning, product selection, to logistics and installation, and on-site engineers provide installation guidance and training in a timely manner. After the project was completed, TST seal engineers conducted safety inspections on each installation node to ensure that all cable penetration systems were installed correctly, and used the most optimized solutions and the highest quality services to provide practical guarantees for the stable operation of the converter station, and used their utmost efforts to provide customers with full life cycle services.