【Major Equipment in the Chemical Equipment Industry】126-**Domestic production of high-pressure LNG pumps for pipeline systems**

On the eve of the National Day holiday in 2021, as the staff at the control center of the Dalian LNG receiving station, which is part of the **Pipeline LNG Management Branch**, pressed the start button, the P-1401G high-pressure pump at that station began to operate smoothly. Green natural gas was then pumped into the **natural gas transmission pipelines at a rate of 6.5 million cubic meters per day**. Thus, the first operational LNG receiving station in China has seen the successful commissioning of its domestically produced high-pressure pumps, truly featuring a \"Chinese heart\". The LNG high-pressure pump is the “heart” of an LNG receiving station. As a **strategic maritime route for natural gas, China currently has 22 operational LNG receiving stations, covering regions such as the Bohai Sea area, the Yangtze River Delta, and the Pearl River Delta. Similar to the function of the human heart, LNG receiving stations use ultra-cold and high-pressure pumps to raise liquid LNG to 10.6 megapascals; once vaporized, the natural gas is delivered continuously to thousands of households through long-distance pipelines. Based on an annual gas consumption of 360 cubic meters for a family of three, a single high-pressure pump can transport nearly 2.4 billion cubic meters of natural gas per year, which is sufficient to meet the annual gas needs of a large city with a population of over 10 million. The LNG high-pressure pump mainly consists of components such as the pump body and motor. The Dalian LNG receiving station is equipped with 7 high-pressure pumps. Over the 10 years since its operation, the key core technologies related to these high-pressure pumps have been monopolized by foreign countries. The domestically produced high-pressure pumps in use generally rely on imported motors, which result in high purchase costs, expensive spare parts, and high maintenance expenses; domestic research and development in this area had not existed prior to now. Since 2018, the **Dalian LNG Receiving Station has been working toward the goal of jointly developing a complete set of domestic high-pressure pump and motor technologies. With the strong support of the China General Machinery Industry Association, it has collaborated with the domestic company Apollo to leverage the capabilities of the entire industry chain in order to overcome those technical challenges that hinder the development of this sector. **The Dalian LNG receiving station of the pipeline network, together with Apollo Company, established several technical teams specializing in areas such as machinery, electrical systems, and process engineering. Through coordinated efforts, they carried out research on various topics, including electromagnetic design in ultra-low temperature environments, insulation techniques for motor windings at low temperatures, testing protocols for the key performance characteristics of low-temperature motors, assembly processes for motor stators and rotors, processing methods for low-temperature materials, rotor design and dynamic analysis, as well as the development and optimization of balancing mechanisms. They created a realistic simulation of an ultra-low temperature liquid nitrogen experiment setup and developed the first set of pre-export testing procedures. The high-pressure pumps were successfully tested before being shipped, transported, and assembled. At present, this pump operates smoothly, with all its performance parameters meeting or exceeding those of similar imported products. This represents a significant breakthrough in the localization of high-pressure pump motors for ultra-low temperature LNG in China, and it effectively resolves the technical challenges that have hindered the localization of key LNG equipment.

For pumps operating under such harsh conditions, using products from manufacturers with no track record or experience is essentially a big mistake

With the strong support of the China General Machinery Industry Association, and in collaboration with the domestic Apollo Company, efforts from the entire industry chain have been pooled to tackle the key technical challenges that hinder the development of this sector. Only by going through setbacks can one climb uphill. Try to avoid **queue guidance

It’s not that they can’t be used; one just needs to anticipate such problems. There’s no point in boasting ahead of time – wait until the issues are overcome before talking about achievements. Even by bringing together the entire production chain for pumps, it’s not possible to create pumps suitable for extreme operating conditions. Most of the pump products we produce were either designed through collaborative efforts back then, or based on blueprints purchased in the 1980s, or else copied from products of foreign companies over the past decade or so. Few manufacturers have experience in designing products for extreme operating conditions, and these products will inevitably have a bunch of problems in their initial version. It depends on whether the users can persevere and whether the manufacturers have the capability to keep making improvements

The first generation of these products will inevitably have a bunch of problems. Well said – if we manage to overcome all those issues, then there will be no true localization. You can take a look at the history of the localization of chemical processing equipment over the past few decades; in the past, even the desire to achieve localization was not possible due to a lack of capability

More people are welcome to participate in the relevant discussions. Click on the blue link to access it: The 【Haichuan Equipment Guessing Game】 series is being updated continuously in 2022; all Haichuan community members are encouraged to join in! https://bbs.hcbbs.com/thread-2079686-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum) Summary post on the series 【Major Equipment in the Chemical Equipment Industry】 https://bbs.hcbbs.com/thread-3312079-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum) Summary post discussing the components of cracking furnace equipment for 【Ethylene Cracking】 https://bbs.hcbbs.com/thread-3308724-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum)

On January 5, with the arrival at CNPC Jiangsu LNG receiving station of a high-pressure pump outlet manifold housing, an important component for LNG gasification manufactured by Dalian Deep Blue Pump Co., Ltd., the maintenance work on the equipment needed to ensure LNG supply during winter at CNPC Jiangsu LNG began. Yang Linchun, an expert in mechanical equipment maintenance at Sinopec Jiangsu LNG Terminal, was responsible for organizing the equipment unloading.

1. I approve of this series of positive content posted by the original poster, as it reflects the efforts, attempts, investments, and successes of domestic enterprises in key core technologies. 2. Similar to products that are monopolized abroad, there are more or less issues in the initial stage of localization; however, there are many examples of successful substitution for imports over the course of several years. Including the several manufacturing plants involved in this topic, we have witnessed the growth and expansion of these enterprises, as well as the gradual maturation of their products. 3. In our petrochemical industry, if we look back 20 years, it can be seen that many products had to be imported; items such as elbows used in delayed coking heaters, burners for sulfur furnaces, and piping components for hydrocracking all had to be imported. With the full cooperation of domestic enterprises and users, looking at the situation today, it is evident how many products have already been replaced by domestic alternatives. Without this process, it will forever be monopolized by foreign products. 4. It must be admitted that there are differences in certain core technologies, which urges domestic companies to strive to catch up; users need to understand and be willing to give them a chance to try.