News dynamics-Hangzhou Hengma Power Technology Co., Ltd

Renovation of old substation walls for water seepage, waterproofing, and fire prevention sealing

Currently, there is a common phenomenon in many old-fashioned substations, where there is a chaotic and disorderly sealing at the junction between the wall and the cable, where the wall is in direct contact with the cable, and there is no pipeline connecting to the wall in the middle. The operation of cables generates a certain amount of heat and undergoes thermal expansion and contraction. During a certain period of time, they are in a state of low-frequency vibration. Therefore, after solidification, the cement wall cannot achieve a perfect seamless contact with the running cable, and the edges and corners of the cement are hard after solidification. At the same time, due to the vibration generated by cable operation, the problem of thermal expansion and contraction friction easily damaging the surface of the cable is becoming increasingly apparent. At the construction site, Hangzhou Hengma Power Technology Co., Ltd. recently renovated the overall waterproof and fireproof sealing of the through-wall cables in a Chengcheng substation in Jiangsu. The entire process is divided into four steps: demolishing the wall, building a framework, shaping the wall, and cleaning and integrating. It effectively standardizes the entry cables and leaves reserved pipelines for later maintenance. Construction steps

Blocking of cables passing through walls in residential areas

The current problem of waterproof sealing for cable ducts passing through walls in underground distribution rooms in residential areas is becoming increasingly serious. Traditional sealing products such as sandbags, fireproof mud, and cement cannot meet the needs of residential user units, and the sealing effect of traditional sealing products is average, with a service life of generally 1 to 2 years. Some even need to be replaced within a shorter period of time, Hangzhou Hengma Power Technology Co., Ltd. has invented an inflatable pipeline sealing device that can effectively solve the problem of sealing effect and sealing time, providing a perfect solution for community users. This picture shows the situation of a Beijing company using traditional sealing products before using inflatable pipeline sealing products. According to the relevant needs of the sealing user and the sealing construction party in the community, sealing has become a serious problem, and the sealing effect cannot meet the requirements. After the sealing is completed, there may be water seepage in the pipeline, and the sealing position is not very beautiful, especially for the sealing of multiple pipelines, which basically cannot meet the sealing and waterproofing requirements, And after the sealing is completed, it needs to be filled for a long time, which is not easy to remove and affects later maintenance and construction. This picture shows the effect of using Hangzhou Hengma inflatable pipeline sealing. After the sealing is completed, the acceptance party requested on-site testing for water seepage and resistance to water pressure. The acceptance party conducted an 8-meter water pressure injection, but no water leakage occurred. The inflatable sealing device did not flush out of the pipeline due to water pressure, and the sealing of multiple cables did not leak. The inflatable pipeline sealing device has received unanimous praise from many users for its effectiveness in sealing the underground distribution room in residential areas. There is no need to worry about safety hazards caused by water ingress into the distribution room. Moreover, the surface of the property construction company is convenient to install after construction, and there is no need to check for water leakage in the wall pipes for a long time. This has indeed solved their previous problem of water leakage, and we strongly recommend using products in surrounding residential areas.

Blocking Case of a Large Project in Shanghai, a Fortune Global 500 Enterprise

Regarding the use of Hengma's inflatable cable duct sealing device (IDSS) for sealing leaks, in order to solve the problem of water seepage in the cable duct holes of underground distribution rooms, our company has sealed 200 cable ducts in accordance with the requirements for sealing water seepage in a high-end residential area underground distribution room in Lishui. After a quarter of operation and use, the situation is summarized as follows: Before installation, the underground distribution room in a high-end residential area in Lishui had severe water seepage in the cable duct. As shown in the figure, there was already some water accumulation on the ground, and the emergency response method is not a long-term solution. The location of the water seepage cable duct is located at the top of the distribution room, and according to the water flow habits, it flows towards low terrain, seriously endangering the normal operation of the distribution room system. After installing the inflatable cable duct sealing system, there is no water leakage at the pipe hole, and there is no threat of water seepage and downward flow to the operating system. 1. Quick and convenient installation, easy to block in water seepage; 2. Various oval shaped pipe holes or cables of different specifications can be installed, and hollow and multi-core can be installed; 3. It can resist various sealing environments (such as corrosion, fungi, and chemical corrosion); 4. Can be used for various materials such as PVC, iron, steel, concrete, and various molded pipes;

The use of IDSS for plugging in a high-end residential area in Lishui

Regarding the use of Hengma's inflatable cable duct sealing device (IDSS) for sealing leaks, in order to solve the problem of water seepage in the cable duct holes of underground distribution rooms, our company has sealed 200 cable ducts in accordance with the requirements for sealing water seepage in a high-end residential area underground distribution room in Lishui. After a quarter of operation and use, the situation is summarized as follows: Before installation, the underground distribution room in a high-end residential area in Lishui had severe water seepage in the cable duct. As shown in the figure, there was already some water accumulation on the ground, and the emergency response method is not a long-term solution. The location of the water seepage cable duct is located at the top of the distribution room, and according to the water flow habits, it flows towards low terrain, seriously endangering the normal operation of the distribution room system. After installing the inflatable cable duct sealing system, there is no water leakage at the pipe hole, and there is no threat of water seepage and downward flow to the operating system. 1. Quick and convenient installation, easy to block in water seepage; 2. Various oval shaped pipe holes or cables of different specifications can be installed, and hollow and multi-core can be installed; 3. It can resist various sealing environments (such as corrosion, fungi, and chemical corrosion); 4. Can be used for various materials such as PVC, iron, steel, concrete, and various molded pipes;

Jinhua IDSS (Optical Cable Blocking)

It has been more than 10 years since the implementation of fiber optic cable sealing according to national and relevant regulations. At present, cement is commonly used for sealing in the market, but due to some characteristics of cement, it cannot meet the sealing requirements. Later, when the fireproof mud sealing was replaced, it was still an alternative sealing product that did not achieve the expected effect. The underground well for laying optical cables is a very small cubic well, and there is a cable underground well for laying optical cables every 50-60 (unit meters). Sometimes, the optical cables and cables are located in the same well, so the problems that need to be solved for sealing the cable well for laying cables also exist. Due to the particularity of the cable well for laying optical cables, the sealing requirements have increased. (1) Prevent sediment from filling pipelines. (2) Prevent small animals (mice) from corroding the optical cable or entering the user area along the optical cable pipeline. (3) Prevent water from entering the pipeline. Implementation plan (1) Clean the pipeline wall and optical cable to remove previous sediment, cement, and fire-resistant mud residues. (2) Use inflatable cable duct sealing device (IDSS) for sealing and sealing.

Sealing of underground cable well pipelines in Hefei

Sealing underground cable wells and pipelines has always been a headache for power engineering. Assuming that there is one cable in the cable duct, the underground cable duct is usually PVC pipe. The accumulated water in the well is infiltrated by rainwater or road surface water, but due to the lack of drainage channels and difficulty in evaporation, the water level will exceed the height of the cable duct after a certain period of time. If no sealing is implemented, the water level will be shared between the two power underground wells when the pipeline is connected, and the cable will always be immersed in water. When one of the underground wells is opened for cable maintenance management, it is necessary to first extract water from the underground wells. However, due to the shared water level, it is equivalent to simultaneously extracting water from the interconnected power underground wells within a certain range. Extracting accumulated water causes the water level to be lower than the height of the cable duct to be maintained. However, due to the interconnectivity of the cable ducts, the accumulated water in the nearby power underground well will flow into the low water level section through the cable duct to achieve water level balance. Therefore, the cost of maintaining the power underground well without sealing cannot be estimated. Once emergency repairs occur, Running against time is even more challenging for emergency repair work. The traditional plugging cement, foam, fireproof mud and other plugging are only temporary emergency plugging, which can not prevent ponding and problems caused by ponding. Some hazardous cables even cause more trouble for cable maintenance. At present, the inflatable cable duct sealing device can effectively seal the cable duct opening, but due to the functional limitations of its product, the required sealing effect is not ideal (see the IDSS product comparison section for details). The following example is a field photo of Hangzhou Hengma Power Technology Co., Ltd. sealing the underground well of Hefei Power. In the photo, the cable duct has been damaged, and the water level has risen to a low position at the cable duct opening.

充气式电缆管道封堵器？

电缆管道穿了电缆之后，封堵就成为了难题，在此之前用水泥封堵过去电缆管道密封，现在全部采用充气式电缆管道密封装置替代，因为用水泥密封电缆固定死了，基本动不了，当有故障发生时，很难拆卸，拆卸时容易破环电缆，很难开展工作，且成本比较高。电缆穿墙而过，这个部位相对来说比较复杂，做不好也会产生很多问题。目前解决封堵问题用的较多的是充气式管道密封装置，这是一种柔性封堵技术，通过充气膨胀达到的封堵效果，采用

产品升级，封堵更高效

产品介绍 BBS防凝露封堵组料是采用高分子矩阵技术研制而成的一种专用密封材料，组料分A组和B组，两组组分现场搅拌混合后可快速自流平，随后膨胀固化形成密封体。可以完全阻隔凝露湿气源头，避免凝露产生及小动物进入电柜产生电力安全隐患。产品特点 1.自流平、膨胀、密封,施工方便。 2.防水防潮防小动物:固化后形成外硬内软密闭体,闭孔率达99%，不含鹵素,完全隔离水汽,井能防止小动物进入电柜内部。 3

机房“漏”了！！！

杭州临平某小区机房因电缆较多，进出墙频率较高，导致穿线孔空洞较大，造成小动物进出机房，引发安全隐患问题。而杭州亨玛电力科技有限公司研发的线缆管道封堵器很好的解决了这一问题，深受机房管理人员的一致好评。产品简介线缆管道封堵器主要由注塑成型的硅橡胶好高性能的阻燃尼龙通过不锈钢螺杆装配而成。安装示意图现场施工图

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