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1. 发明公开

EP3886114A1 NUCLEAR POWER PLANT EQUIPMENT GATE CONNECTION FASTENING STRUCTURE AND FASTENING METHOD THEREFOR 审中-公开
公开(公告)号：EP3886114A1
公开(公告)日：2021-09-29
申请号：EP18940789.3
申请日：2018-12-02
申请人： China Nuclear Power Design Company Ltd. (Shenzhen) , China Nuclear Power Engineering Co., Ltd. , China General Nuclear Power Group , CGN Power Co., Ltd.
发明人： LIU, Xiaohua , ZHANG, Feng , XIE, Honghu , CHEN, Chuyuan , LI, Yue , LI, Shilei
IPC分类号： G21C13/028
摘要： The present invention provides a nuclear power plant equipment gate connection fastening structure and fastening method therefor. The nuclear power plant equipment gate connection fastening structure includes a sleeve flange (10) fixedly connected to a penetrating sleeve (12) pre-embedded in a containment wall and a shell cover flange (20) fixedly connected to a gate shell cover (22). A number of "U"-shaped holes (30) having openings facing outward are provided at the corresponding positions of the sleeve flange (10) and the shell cover flange (20) along the circumference thereof. After the sleeve flange (10) and the shell cover flange (20) are in butt joint, the sleeve flange (10) and the shell cover flange (20) are fastened by means of eyelet bolt assemblies (40). Each eyelet bolt assembly (40) includes a detachable eyelet bolt (42), an external nut (44), and an adjustable gasket (46) sheathed onto the eyelet bolt (42). The fastening method of the present invention includes the steps of: 1) arranging orientations according to the eyelet bolt assemblies (40) of an equipment gate, and performing bolt pre-tightening by a bolt tensioner, the bolt tensioner containing 2-4 combination tension heads, each combination tension head containing 2-4 tension cylinders for pre-tightening 4-16 eyelet bolt assemblies (40) each time; 2) during pre-tightening, symmetrically and evenly placing the combination tension heads on the eyelet bolt assemblies (40) which are circumferentially arranged, and connecting a hydraulic pump station (83) via a hydraulic pipeline (82); 3) performing tension and pre-tightening operations on the eyelet bolts (42) by using hydraulic power assist after starting the hydraulic pump station (83); 4) performing the pre-tightening operation by switching to the next set of the eyelet bolt assemblies (40) clockwise or counterclockwise after one set of the eyelet bolt assemblies (40) being pre-tightened fully. The connection fastening structure and fastening method therefor can enable the equipment gate to be opened and closed quickly, to avoid some of the bolts from being incapable of being mounted due to the deformation of the sleeve flange (10) and a bolt hole of the equipment from being damaged.

2. 发明公开

EP3875720A1 NUCLEAR POWER PLANT PERSONNEL AIRLOCK BUFFERING DEVICE 有权
公开(公告)号：EP3875720A1
公开(公告)日：2021-09-08
申请号：EP18938931.5
申请日：2018-12-02
申请人： China Nuclear Power Design Company Ltd. (Shenzhen) , China Nuclear Power Engineering Co., Ltd. , China General Nuclear Power Group , CGN Power Co., Ltd.
发明人： QIN, Junwei , XIE, Honghu , ZHANG, Feng , LI, Shilei , LIU, Xiaohua , ZHANG, Yihan , MA, Wenqin
IPC分类号： E05F5/02 , E05C19/16
摘要： A nuclear power plant personnel gate buffer device includes: a chuck structural member, fixed on a door frame and including an electromagnetic chuck and a chuck base plate that are fixedly connected, the chuck base plate being provided with sliding plates at two sides thereof, the electromagnetic chuck and the chuck base plate connected together being capable of moving up and down along the sliding plates, and the electromagnetic chuck being connected to a power supply for controlling the power supply time of the electromagnetic chuck; and a suction plate structural member, fixed on a door plate and including a suction plate, a suction plate connecting plate and a door plate connecting plate, the suction plate being fixed on the suction plate connecting plate, with a first spring being arranged between the suction plate connecting plate and the door plate connecting plate, the first spring being provided with a first mandrel therein, one end of the first mandrel being fixed to the suction plate connecting plate, the other end of the first mandrel passing through the door plate connecting plate and arranging the first spring between the suction plate connecting plate and the door plate connecting plate by an auxiliary member; wherein the chuck structural member and the suction plate structural member can be attacted to be locked or opened.

3. 发明公开

EP4325521A1 EMERGENCY RESIDUAL HEAT REMOVAL AND WATER REPLENISHING SYSTEM FOR NUCLEAR POWER PLANT 审中-实审
公开(公告)号：EP4325521A1
公开(公告)日：2024-02-21
申请号：EP21932442.3
申请日：2021-06-30
申请人： China Nuclear Power Engineering Co., Ltd. , China Nuclear Power Design Company Ltd. (Shenzhen) , China General Nuclear Power Corporation , CGN Power Co., Ltd.
发明人： ZHANG, Feng , GONG, Aicheng , SHE, Yingjuan , SONG, Yujun , XU, Naisheng , YANG, Jinchun , CHEN, Chuyuan , DU, Xiaodong , LIU, Lijun , HE, Yingyong , LI, Qing , LIU, Xiaohua , LUAN, Luan , ZUO, Yongde , SHENG, Gang
IPC分类号： G21C15/18
摘要： The present invention provides an emergency residual heat removal and water replenishing system for a nuclear power plant including: three columns of mutually independent cooling series (10), an ultra-large-sized modular cooling water tank (40), a set of control and alarm systems, and an auxiliary monitoring instrument, wherein the water capacity of the ultra-large-sized modular cooling water tank (40) at least can meet the removal of heat of a primary loop within 72 hours after an accident occurs, and the cooling water tank (40) is connected to an emergency water supply system and a spent fuel pool, so as to replenish the emergency water supply system and the spent fuel pool with water when needed; the three columns of cooling series (10) share the ultra-large-sized modular cooling water tank (40) as a final heat trap of condensers (14) of the three columns of cooling series (10), thereby realizing the passive residual heat removal at secondary sides of steam generators (90) when the emergency water supply system is not available; and the bottom of the ultra-large-sized modular cooling water tank (40) is provided with sinking compartments, and the condensers (14) of the three columns of cooling series (10) are respectively located in different sinking compartments. The emergency residual heat removal and water replenishing system for a nuclear power plant can completely meet the requirement for removing heat released by nuclear fuel within 72 hours, thereby improving the capability and safety of the nuclear power plant in coping with an accident condition.

4. 发明公开

EP4050245A1 DEVICE GATE FOR NUCLEAR POWER PLANT 审中-实审
公开(公告)号：EP4050245A1
公开(公告)日：2022-08-31
申请号：EP19947094.9
申请日：2019-11-29
申请人： China Nuclear Power Engineering Co., Ltd. , China Nuclear Power Design Company Ltd. (Shenzhen) , China General Nuclear Power Corporation , CGN Power Co., Ltd.
发明人： ZHANG, Feng , HE, Yingyong , XIE, Honghu , LIU, Xiaohua , CHEN, Chuyuan , YANG, Jinchun , RAN, Xiaobing , HUANG, Kai , LUAN, Luan , XIE, Ruze , QIN, Junwei , CHEN, Zhao , LI, Yue , ZHANG, Yihan , LI, Shilei , ZHAO, Xiaohong , LI, Jinzhao
IPC分类号： F16K3/02 , F16K3/316 , B66F7/06 , G21C9/00 , B66D1/04
摘要： The present invention provides a device gate for nuclear power plant including a shell ring fixedly connected to a penetrating piece of containment. The device gate for nuclear power plant further includes: a gate seal head corresponding to an end surface of the shell ring and configured for being sealedly connected to the shell ring; a hoisting lifting assembly positioned above the gate seal head and movably connected to the gate seal head, and configured for performing hoisting and resetting on the gate seal head; a high-position suspending assembly positioned above the gate seal head and configured for being detachably connected to the gate seal head when the gate seal head is hoisted to a specified position; and an anti-seismic limiting assembly, partially provided on the containment and movably connected to the gate seal head, and configured for performing limiting and anti-seismic processing on the gate seal head when the gate seal head is suspended on the high-position suspending assembly. The present invention ensures reliability and anti-seismic requirements of the device gate for nuclear power plant.

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