The hottest Huaxia valve solves customer problems

2022-08-09
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On October 18, Huaxia valve was delivered to customers for a group of imported valves successfully repaired by Yuedian Zhuhai power plant. After installation and operation for half a month, the valve has been in normal use. Customers greatly affirmed the ability of Huaxia valve to solve technical problems in a very short time and save time and cost for Yuedian Zhuhai Power Plant

lay the foundation for domestic new products to replace imported products

on October 18, Huaxia valve was delivered to customers for a group of imported valves successfully repaired by Yuedian Zhuhai power plant. After installation and operation for half a month, the valve has been in normal use. The customer greatly affirmed the ability of Huaxia valve to solve technical problems in a very short time and save time and cost for Guangdong electric power Zhuhai Power Plant, and said that at an appropriate time, he would organize a team to Huaxia valve to conduct a field investigation on the replacement of imported products with domestic new products

previously, Huaxia valve provided valve products for the power plant, and the two sides established a cooperative relationship. However, due to the use of imported valves in power plants, the cooperation between the two sides is not close. However, Huaxia valve believes that actively expanding the market of domestic new products and replacing imported products with domestic new products can reduce costs and increase efficiency for both the company and the power plant, and can save more time for the overhaul and maintenance of the power plant, which is a win-win situation. Therefore, after the successful research and development of domestic new products of Huaxia valve and their launch on the market, Chinese enterprises have the talent to produce their own plastic extrusion machinery. Huaxia valve timely provided the power plant with relevant technology and product information, including shutdown products, in an effort to lay a foundation for expanding the scope of cooperation in the future

shortly after that, the power plant had problems with American imported valves that had been used for one or two years and needed to be dealt with quickly. When the power plant chose a highly skilled maintenance unit, Huaxia valves naturally entered the vision of the power plant. In the view of the power plant, handing over the maintenance work to Huaxia valve is also a verification and inspection of the strength of Huaxia valve

although Huaxia valve, which has successfully repaired imported valves for many times, is full of confidence, this matter may involve in-depth cooperation in the future. The company dares not to slack off at all, but takes it as a customer, attaches great importance to our examination, and strives to complete it at a high level

however, when receiving 20 stop valves cut from boiler pipes by the power plant, Huaxia valve realized that the difficulty of this "examination" was still beyond the company's expectation

difficulty 1: in addition to the design parameters, there is no manual, structural drawing and other relevant data for the valve. There is no mark on the surface of the valve, and it is difficult to disassemble, fit the sealing surface, and measure the size. It can only be based on experience, and there should be no error

difficulty 2: there are three kinds of valve materials, F92, sa-105 and F22, which are used in different positions, but the caliber is the same, and the size difference of connecting pipe is small, which will make it difficult to reverse the connection groove during repair and assembly

difficulty 3: 20 valves belong to 17 specifications and have complex structures, which were rare in the past. They need to be repaired in different positions and adopt different methods

difficulty 4: time is very urgent. The required delivery time is only 12 days

according to Bai Keyou, head of the machining process group of Huaxia valve technology department, valve maintenance is to restore the appearance and performance of products through disassembly, replacement of parts, assembly, research and other aspects that are still in progress. It's OK to ask Jinan Zhongbiao instrument and Equipment Co., Ltd. for grinding and painting during the meeting. Therefore, the first step is to disassemble 20 valves one by one, clean and tidy them, and then formulate the corresponding maintenance process plan according to the situation after disassembly

however, this first step did not go smoothly. As the valve has been used for one or two years, the bolts are seriously damaged and rusted, and there is no sign on the valve surface. Some valve discs are integral anti disassembly devices, which can only be ground, and some valves need to be pressurized. Therefore, it took 2 days to disassemble 20 valves

in this process, experienced Bai Keyou felt that it was too late to wait until all valves were disassembled before making the process plan. Therefore, by fully dissecting a valve, Bai Keyou and Li Jie of the process group began to design the maintenance process at the same time. Therefore, the next day after all the valves are disassembled, 10 sets of maintenance process plans will be formed immediately. The list of parts to be replaced proposed in the process plan was proved to be accurate afterwards

with a highly operational process plan and the strict maintenance process of Huaxia valves, LAN Bing of the process team was on site every day, and the employees of the valve manufacturing department worked overtime. By October 18, this batch of valves had successfully completed all the maintenance work in only 8 days, and was delivered to the customer four days before delivery, giving a high-quality answer sheet. The picture shows LAN bin, Li Jie and Bai Keyou from the process group of Huaxia valve technology department (from left to right) discussing the skills of maintenance workers in recent years

(Wen Tu/Zhang Huiping)

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