Hualong No. 1 corrugated pipe nuclear grade globe valve new product prototype passed the appraisal

[ China Instrument Network Instrument Development ] On January 19th, Jiangsu Machinery Industry Association organized experts in Suzhou, Jiangsu Province to host four "Hualong No. 1" bellows jointly developed by Suzhou Newway Valve Co., Ltd. and China Guangdong Nuclear Power Engineering Co., Ltd. Nuclear grade globe valve new product prototype appraisal meeting.

Hualong No.1 is a three-generation million-kilowatt nuclear power technology jointly developed by China Guangdong Nuclear Power and China National Nuclear Corporation with China's independent intellectual property rights. It fully embodies the unity of the balance of safety and economy, the unity of advanced and mature, and the combination of active and passive. It is an independent three-generation nuclear power technology for sustainable development.

It embodies the wisdom and hard work of China's nuclear power builders, realizes the unity of advanced and mature, the balance of security and economy, the combination of active and passive, and has the comparative advantage of international competition. It is expected to fill China's domestic market in a short time. Technical gap, with the conditions for participating in international bidding.

However, some key valves of Hualong No. 1 nuclear power unit are highly difficult due to technical difficulties and small number of devices. The domestically-developed nuclear power unit still needs to be imported. Most of the high-end valves that need to be imported are still owned by US companies or Monopoly of holding companies. From the perspective of ensuring the national nuclear power safety strategy and facing the international new economic environment, realizing the full coverage of the key valves of the Hualong No. 1 nuclear power plant is an important task that needs urgent solution.

Suzhou Newway Valve Co., Ltd. has been committed to the production and research and development of industrial valves, and is committed to improving the engineering supporting capacity and innovation capability, so as to provide a complete set of valve solutions for various new industrial needs. After years of development, it has been very Strong research and development capabilities and innovative capabilities.

The new product prototypes of four "Hualong No. 1" corrugated pipe nuclear-grade globe valves jointly developed by Suzhou Newway Valve Co., Ltd. and China Guangdong Nuclear Engineering Co., Ltd. have been verified by Suzhou Quality and Technical Supervision Bureau Comprehensive Inspection and Testing Center and Suzhou Su Test. Third-party testing such as Sex Experimental Center Co., Ltd. and National Valve Quality Inspection and Testing Center, the requirements of the various indicators to be inspected are high, and the inspection specifications and relevant standards that meet the technical requirements are required.

The bellows nuclear grade shut-off valve not only completed the benchmark performance test, sealing performance test, measurement coefficient test test, pressure performance test, operability under extreme conditions, cycle life, vibration aging, seismic performance, end load, fluid resistance Breaking and other qualification tests, the test results meet the requirements of the development task book and related standards, and the modular structure design has been developed to achieve rapid replacement; the high-rigidity lightweight bonnet and bracket structure design has been adopted to improve the seismic resistance of the valve; The environmentally friendly design scheme, low leakage, oil leakage prevention, double seal structure design, etc., effectively avoid the potential leakage risk of the valve.

The appraisal committee agreed that the main performance indicators of the nuclear-grade bellows stop valve prototype, strict technical conditions, test outline and relevant standards, the main technical indicators reached the international advanced level of similar products, products can be promoted and applied in other nuclear power projects, the appraisal committee agreed Identification by prototype.

The acceptance of the new product prototype of the four Hualong No. 1 corrugated pipe nuclear-grade globe valves is not only conducive to the development of the nuclear power industry, but also establishes a firm confidence in the steady advancement of the domestically produced valves of Hualong Unit 1.

(Source: Jiangsu Valve Association, China Guangdong Nuclear Power Engineering Co., Ltd., Suzhou Newway Valve Co., Ltd.)