In the special equipment safety inspection industry in China, Shenzhen Special Equipment Safety Inspection Institute (hereinafter referred to as Shenzhen Special Inspection Institute) can be called the vanguard of powerful and advanced technology. Over the years, the institute has continuously invested nearly RMB 100 million to establish a number of national-level testing projects integrating inspection, testing, testing and research. The state-level safety valve type test is a major highlight. Shenzhen Special Inspection Institute safety valve type test device can carry out the cold and hot test of safety valves for steam, air and water, and plays an important role in domestic and international safety valve type tests, performance tests, and product R&D. .

The safety valve is mainly used in boilers, pressure vessels and pipelines. It is a device that prevents the pipeline by discharging the medium outside the system when the pressure in the medium (usually divided into gas, liquid and solid) in the equipment or pipeline rises above the specified value. Or the special valve in the equipment where the pressure of the medium exceeds the specified value. With the rapid development of China's economic construction, there are more and more project projects with pressure control equipment, such as oil and gas well projects and petroleum pipeline transportation projects. In view of the pressure relief requirements of the equipment, safety valves play a role in life safety and equipment operation. Crucial role. However, despite the large number of enterprises in the domestic valve industry chain, but the non-valve power, from the perspective of product quality, China still has a gap from the valve power. Low production concentration in the industry, low valve R&D capability of high-end products, and low manufacturing technology level in the valve industry still exist. In this case, improving the inspection and inspection level of safety valves is the only way to ensure safety and improve product quality. The safety valve type test is a test to verify whether the product can meet all the requirements of the technical specification, but our country has long been in a blank state in this field. It can be said that the safety valve type test is the treasure that every family in the special equipment inspection industry dreams of but can hardly reach. It is like a crown jewel.

There is no difficulty in the world. In August 2008, the Safety Valve Type Test Test Project of the Shenzhen Special Inspection Institute passed the project and launched an impact on the development of the safety valve type test device. This is a period of hardships and passions that accompany the combustion. In the process of self-designed and independent investment, the engineering and technical personnel of the Shenzhen Special Inspection and Quarantine Institute smashed the bones of the ants and passed through a difficult road. After nearly three years of research, by February 2011, the safety valve hot-cold type test device with a total investment of about RMB 20 million was put into use and was qualified for type testing of safety valves. The Special Inspection Institute of Shenzhen indicated that the type of safety valve type test device at the beginning of construction, through the digestion, the introduction of advanced technology from the United States, boldly introducing new technologies, new processes, and new equipment, based on the original capacity of the US National Boiler and Pressure Vessel Committee. The test capability has been improved, and the test pressures, discharge pressure, seatback pressure, opening height and mechanical characteristics, and displacement test can be completed. The safety valve test capability of the Shenzhen Special Inspection Institute (Table 2) should be compared with that of the United States NB (Table 1).

With diamond drill, dare to take porcelain. From 2011 to 2012, Shenzhen Special Inspection Institute completed the test of cold and hot type safety valves and safety valve products from safety valve manufacturers from Germany ARI, Italian TA ImilanoSPA, Spanish VYCindustrial, British Bailey, and several safety valve manufacturers in China. , Guangdong Province, safety valve product quality supervision and spot checks and other work; in 2013 completed the Shandong Taishan valve manufacturing plant, South Korea JK valve factory, the United States Dresser Valve Factory, Wuhan High Pressure Valve Manufacturing Plant and other companies commissioned safety valve type test In 2014, a total of 26 safety valve type test operations were completed; in 2015, it could be said that the safety valve type test business of Shenzhen Special Inspection Hospital had a bumper harvest. By November, a total of 105 safety valve type tests had been completed.

Among the numerous businesses, the Shenzhen Special Inspection Institute also conducted relevant type tests and performance tests for safety valves for nuclear safety devices, naval vessel safety devices, and well-known US valve manufacturers. Due to the special place of use and the narrow space for use, the military safety valve has a high requirement for the performance of the safety valve. In particular, the special structure of the valve has a very high requirement for the testing of the steam displacement. In October 2014, the Shenzhen Special Inspection Institute completed A safety valve manufacturer in China is a performance tester for safety valves produced by the Navy. One of the world's leading manufacturers of safety valves, a fluid control company in the United States, has obtained the overseas safety valve manufacturing license issued by the General Administration of Quality Supervision, Inspection and Quarantine. In October 2014, the Shenzhen Special Inspection Institute completed two types of steam and air safety valve type tests for 12 safety valves. Since the nuclear accident at the Fukushima nuclear power plant in Japan, the world’s attention to nuclear safety has further increased. As one of the most important safety and security measures for nuclear power plants, nuclear power plant safety valves are highly valued by the regulatory authorities and require nuclear power safety valves to perform displacement tests. The nuclear power plant import and export safety valves under construction are all undergoing displacement performance tests at Shenzhen Special Inspection Institute. In early May 2015, upon the entrustment of the construction party, Shenzhen Special Inspection Institute carried out displacement tests on the 16 nuclear power safety valves of Shanghai Valve Factory and Dongwu Machinery Co., Ltd. In order to ensure accurate access to data concerning its quality and safety, the staff of the hospital successfully completed the displacement test of the above six nuclear power safety valves after a four-day test through the verification of test capabilities and the preparation of the test program.

Shenzhen Special Inspection Institute has trained a strong technical talent team through the construction of safety valve type test project. The project team consists of 1 Ph.D. and 3 masters; 1 professor-level senior engineer and 7 senior engineers.

Shenzhen Special Inspection Institute devoted itself to improving the safety valve type test capability and completed 4 items of AQSIQ research projects related to safety valves. Among them, the “Research on the Flow Performance Test System for Hot and Cold Opening Process of Safety Valves” was identified as “ Overall achieved international advanced level", won the "2011 Shenzhen Science and Technology Progress Award" "2012 Guangdong Province Quality and Technology Supervision Bureau of science and technology progress third prize"; "safety valve type test system (device) development research" scientific research results were identified " The company has won the third prize of the first "China Science and Technology Award for Special Equipment Inspection Association"; it has applied for eight new utility patents and one new invention patent since 2012; it has also been published in national magazines. 8 papers on safety valves.

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