CN103542225A - Primary side main connecting pipe high water level blocking board of steam generator - Google Patents
Primary side main connecting pipe high water level blocking board of steam generator Download PDFInfo
- Publication number
- CN103542225A CN103542225A CN201210234644.8A CN201210234644A CN103542225A CN 103542225 A CN103542225 A CN 103542225A CN 201210234644 A CN201210234644 A CN 201210234644A CN 103542225 A CN103542225 A CN 103542225A
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- plate
- steam generator
- water level
- high water
- primary side
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
Abstract
The invention belongs to the technical field of primary side overhaul equipment of a steam generator of a pressurized water reactor nuclear power station, and particularly discloses a primary side main connecting pipe high water level blocking board of the steam generator. The primary side main connecting pipe high water lever blocking board comprises two side boards and a central board. The central board is installed between the two side boards, the central board and the two side boards are matched to form a completely circular structure and each side board is provided with a detecting assembly. The central board and the two side boards are all embedded inside a sealing assembly. The side boards are fixedly installed on a primary side main connecting pipe through double-threaded screw assemblies. The double-threaded screw assemblies are installed on the main connecting pipe through bosses. The central board is fixedly installed on the main connecting pipe through a locating pin. The blocking board can be used for conducting sealing on a primary side water chamber of the steam generator before high water level arrives and the time needed in the overhaul process is guaranteed.
Description
Technical field
The invention belongs to pressurized water reactor nuclear power station steam generator first side repair apparatus technical field, be specifically related to the main adapter high water level of a kind of primary side of steam generator closure plate.
Background technique
Steam generator is the hinge that connects a loop and secondary circuit in nuclear power plant, is one of more equipment of nuclear power plant fault in service simultaneously.Steam generator fault is because the factors such as complicated mechanical vibration and corrosion cause mostly, and causes heat-transfer pipe to break or heat-transfer pipe and the leakage of tube sheet joint place.Once heat-transfer pipe breaks or the fault such as leakage, nuclear power station will be forced to shutdown, cause huge economic loss and major safety risks.Thereby, at primary side of steam generator, carrying out periodic inservice inspection, assessment and preventative maintenance are the indispensable requirements of whole nuclear power system safety, stable operation.
At primary side of steam generator, use at most and mainly contain with the most effective inservice inspection technology in the world at present: heat-transfer pipe vortex inspection, heat-transfer pipe ultrasonic testing, heat-transfer pipe plugging, first side hydroecium surface TV inspection etc., most service works are all to complete by distant control robot.
For the maintenance of primary side of steam generator, need carry out when the first side pipeline low water level.While overhauling during low water level, main adapter is sealed by anti-foreign matter closure plate.And during shutdown the main adapter low water level endurance shorter, water during high water level in main adapter will enter first side hydroecium, operator can not carry out maintenance activity.In order to guarantee the repair time, maintenance process can completely is carried out, need before arriving, high water level seal main adapter.
Summary of the invention
The object of the invention is to provide the main adapter high water level of a kind of primary side of steam generator closure plate, and this closure plate can be used in before high water level arrives primary side of steam generator hydroecium is sealed, and guarantees maintenance process needed time.
Realize the technological scheme of the object of the invention: the main adapter high water level of a kind of primary side of steam generator closure plate, it comprises that two side plates, center plate, center plates are arranged between two blocks of side plates and center plate, two side plate mix proportion completely circular structures, and every block of side plate is equipped with detection components.
Described side plate is the whole fan-shaped cavity type structure that is, side plate is provided with interradial plate in bottom, two two bottom sides disc, two upper strata disc, flange, baffle plate, in bottom, interradial plate is positioned at the center of side plate bottom, and two two bottom sides disc are the symmetrical both sides that are arranged in bottom interradial plate respectively; Upper strata disc is arranged in Nei， upper strata, side plate top disc between two bottom sides disc and bottom interradial plate; The flange that side plate top outer rim is provided with, flange is provided with marking rod mounting hole, and the sidewall of side plate is provided with baffle plate, and baffle plate is embedded in the sidewall of center plate.
Described center plate is the cavity structure that two ends circular arc is rectangle, and is provided with two tapped holes in the outer rim of center plate both sides, flange, two two bottom sides disc, two upper strata disc, four large square holes, interradial plate in two bottoms, four small square holes, four draw-in grooves; In bottom, interradial plate is positioned at center plate bottom centre, and two two bottom sides disc are arranged in interradial plate both sides, bottom; Upper strata disc is positioned at center plate top, simultaneously in bottom between interradial plate and two bottom sides disc; Center plate both sides outer rim is provided with flange, is provided with tapped hole and draw-in groove on flange; Bottom small square hole is positioned at large square hole outside, and four small square holes and four large square holes, all along center plate center line, distribute in non-circular arc bilateral symmetry.
Described detection components consists of marking rod, spring, base pads, and between marking rod and side plate, cover has spring and base pads, and marking rod middle and lower part is provided with boss, and spring is positioned at this boss and is provided with top, and base pads is positioned at this boss bottom.
Described center plate, two blocks of side plates are all embedded in black box, black box is by the sealing gasket fitting tightly with side plate, center plate bottom, be looped around the air bag on sealing gasket outer surface, the moulding being arranged on gasbag outer surface forms, and base pads is between the boss bottom and sealing gasket of marking rod.
In described annular air-pocket inner side, have an air-filled pore, sealing gasket, side plate are all opened a pore that can be communicated with the air-filled pore of annular air-pocket inner side separately, and the tail end of flexible pipe is communicated with the air-filled pore of annular air-pocket inner side by the pore on sealing gasket, side plate.
Described side plate is fixedly installed in the main adapter of first side by double threaded screw assembly, double threaded screw assembly consists of dome nut, nut, double threaded screw, stud runs through side plate, sealing gasket is arranged on side plate 1 in main adapter, and double threaded screw top is provided with cheese head screw and nut.
Described double threaded screw assembly is arranged in main adapter by boss.
Described boss is fixedly mounted on side plate by fastener assembly, fastener assembly consists of dome nut, spring washer, plain washer, boss locating stud, boss locating stud bottom is fastening with side plate, and boss locating stud top is provided with dome nut, spring washer, plain washer.
Described center plate will be fixedly installed in main adapter by locating stud.
Beneficial effect of the present invention: it is few, simple and reliable for structure that equipment of the present invention forms component.Side plate and center plate can guarantee to install smoothly from first side manhole.Side plate and center plate are designed to web pattern, and quality alleviates and guarantees structural rigidity simultaneously.On side plate, be provided with fastening piece and corresponding locking measure, and simplicity of design mechanical structure, can carry out certificate authenticity to installation quality.Whole Equipment is easy for installation, and operating time section reduces the suffered radiation injury of operator.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of the main adapter high water level of a kind of primary side of steam generator provided by the present invention closure plate.
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is the structural representation of side plate;
Fig. 3 is a) schematic top plan view of side plate;
Fig. 3 b) for the master of side plate looks schematic diagram;
The structural representation of plate centered by Fig. 4;
Fig. 4 a) centered by the schematic top plan view of plate;
Fig. 4 b) centered by, the master of plate looks schematic diagram;
Fig. 5 is the linkage structure schematic diagram of double threaded screw assembly and associated fastener and side plate;
Fig. 6 is the linkage structure schematic diagram of detection components and side plate;
Fig. 7 is black box and side plate, supervisor's linkage structure schematic diagram.
In figure: 1-side plate, 101. screw rod mounting holes, 102. locating stud mounting holes, interradial plate in 103. bottoms, 104. upper strata disc, 105. two bottom sides disc, 106. flanges, 107. marking rod mounting holes, 108. baffle plates;
2-center plate, 201. tapped holes, 202. flanges, 203. two bottom sides disc, 204. upper strata disc, 205. large square holes, interradial plate in 206. bottoms, 207. small square holes, 208. draw-in grooves;
3-nylon cable tie, 4-flexible pipe, 5-dome nut, 6-nut, 7-boss, 8-dome nut, 9-spring washer, 10-plain washer, 11-boss locating stud, 12-double threaded screw, 13-marking rod, 14-spring, 15-base pads, 16-locating stud, 17-sealing gasket, 18-air bag, the moulding of 19-rectangle, the main adapter of 20-, 21. double threaded screw assemblies.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, side plate 1 and center plate 2 adopt high tensile aluminium alloy processing, surperficial anodic oxidation.Side plate 1 and center plate 2 are all designed to plate spoke structure, and structure the light personnel of convenience operate, and have guaranteed structural strength.Due to manhole spatial constraints, described side plate 1 and center plate 2 are designed to split-type structural.Center plate 2 both sides are respectively provided with 1, two block of side plate 1 of a side plate and a conglobate plate spoke structure of the whole structure of center plate 2.
As shown in Figure 3, two screw rod mounting holes 101 on side plate 1 and four locating stud mounting holes 102 provide respectively the installing space of double threaded screw assembly convex platform locating stud 11 and stud bolt 12.As Fig. 3 a) as shown in, side plate 1 is fan-shaped cavity type structure for whole.As Fig. 3 b) and Fig. 3 a) as shown in, side plate 1 is provided with interradial plate 103 in bottom, two two bottom sides disc 105 and two upper strata disc 104.In bottom, interradial plate 103 is positioned at the center of side plate 1 bottom, and two two bottom sides disc 105 are the symmetrical both sides that are arranged in bottom interradial plate 103 respectively.Upper strata disc 104 is arranged in side plate 1 Nei， upper strata, top disc 104 between two bottom sides disc 105 and bottom interradial plate 103.The flange 106 of side plate 1 top outer rim contacts with the mouth of pipe of main adapter 20 while installing, and plays the effect of mounting flange.Marking rod mounting hole 107 on flange 106 provides the mounting point of marking rod 13.Side plate 1 inner side is provided with two baffle plates 108, and baffle plate 108 is connected for side plate 1 and center plate 2.
As shown in Figure 4, two tapped holes 201 on center plate 2 are for connection locating stud 16.Flange 202 forms completely circular structure with flange 106, with the effect of flange.Center plate 2 is equally cavity type structure with side plate 1.For proof strength is designed with interradial plate 206 and two upper strata disc 204 in two two bottom sides disc 203, bottom.In bottom, interradial plate 206 is positioned at center plate 2 bottom centre, and two two bottom sides disc 203 are arranged in interradial plate 206 both sides, bottom.Upper strata disc 204 is arranged in center plate 2 Nei， upper strata, top disc 204 between bottom interradial plate 206 and two bottom sides disc 203.For further alleviating quality, side plate 1 both sides have four small square holes 207 and four large square holes 205.Small square hole 207 is positioned at large square hole 205 outsides, and four small square holes 207 and four large square holes 205, all along the center line of center plate 2, distribute in non-circular arc bilateral symmetry.Four draw-in grooves 208 are for the baffle plate 108 on location and installation side plate 1, and as shown in Figure 1 and Figure 4, on two side plates 1, totally four baffle plates 108 are all embedded in corresponding four draw-in grooves 208 separately.Baffle plate 108 and draw-in groove 208 overlap joints, be Spielpassung, makes the relative position of center plate 2 and two blocks of side plates 1 immobilize during installation.By the double threaded screw 12 on fixed lateral plate 1, thereby whole closure plate device is fixed.
With shown in Fig. 5, when equipment is installed, operator enter primary side of steam generator hydroecium as shown in Figure 1, Figure 2.Under another operator's cooperation, bend black box, and will after center plate 2, two side plate 1 mix proportion completely circular structures, jointly be embedded in black box.Black box consists of sealing gasket 17, air bag 18, rectangle moulding 19.Center plate 2 is embedded in sealing gasket 17, and center plate 2, two blocks of side plates 1 and black box are embedded in the main adapter 20 of first side hydroecium.
As shown in Figure 1, center plate 2 and black box are fixedly installed in main adapter 20 by two locating studs 16.As shown in Figure 1, Figure 2 and Figure 3, two blocks of side plates 1 are fixedly installed in main adapter 20 by four double threaded screw assemblies 21 separately; Double threaded screw assembly 21 consists of dome nut 5, nut 6, double threaded screw 12.Stud 12 runs through side plate 1, boss 7 and sealing gasket 17, and side plate 1 is arranged in main adapter 20.Double threaded screw 12 tops are provided with cheese head screw 5 and nut 6.Described cheese head screw 5 can make stud 12 avoid tangling other repair apparatus cables.Double threaded screw assembly 21 is fixedly mounted on side plate 1 by boss 7, and boss 7 is fixedly mounted on side plate 1 by fastener assembly.Fastener assembly consists of dome nut 8, spring washer 9, plain washer 10, boss locating stud 11.Boss locating stud 11 bottoms and side plate 1 are fastening, and boss locating stud 11 tops are provided with dome nut 8, spring washer 9, plain washer 10.On side plate 1 and boss, 7 are provided with oval hole, guarantee certain activity space of installing, and make simple installation.
As shown in Fig. 1 and Fig. 6, in every block of side plate 1, be provided with separately two detection components, detection components consists of marking rod 13, spring 14, base pads 15.Between marking rod 13 and side plate 1, cover has spring 14 and base pads 15, and marking rod 13 middle and lower parts are provided with boss, and spring 14 is positioned at this boss and is provided with top, and base pads 15 is between this boss bottom and sealing gasket 17, and base pads 15 is for retaining spring 14.During original state, spring 14 is in elongation state, and the boss compressing on marking rod 13 is close in base pads 15 it.When closure plate of the present invention is in place, the sealing gasket 17 of black box is adjacent to the end face of main adapter 20, after main adapter 20 end faces of 13 times end in contact of marking rod, and the boss Compress Spring 14 on marking rod 13, make marking rod 13 upper ends exceed side plate 1 upper surface, as shown in Fig. 6 right part of flg.Naked eyes can be observed the marking rod 13 stretching out, and confirm successful installation.If show to reexamine installation otherwise can not observe 13 of marking rods that stretch out.Until see marking rod 13.This detection components is simple in structure effectively.
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 7, black box is comprised of sealing gasket 17, air bag 18, rectangle moulding 19.Described black box material is EPDM(ethylene propylene diene rubber), can guarantee good resistance to high temperature.Sealing gasket 17 fits tightly with side plate 1 and center plate 2.Two annular air-pocket 18 inner sides are looped around on sealing gasket 17 outer surfaces, and two rectangle moulding 19 are arranged on air bag 18 outer surfaces.Sealing gasket 17, air bag 18 and rectangle moulding 19 adopt grinding tool global formation, have guaranteed whole sealing effect.Two annular air-pockets 18 can fully guarantee the reliability of sealing.In annular air-pocket 18 inner sides, have an air-filled pore, sealing gasket 17, side plate 1 are all opened a pore that can be communicated with the air-filled pore of annular air-pocket 18 inner sides separately.The tail end of flexible pipe 4 is communicated with the air-filled pore of annular air-pocket 18 inner sides through the pore on sealing gasket 17, side plate 1.During use, the air-filled pore by annular air-pocket 18 inner sides by flexible pipe 4 to two interior inflations of air bag 18; After two air bag 18 inflations, air bag 18, sealing gasket 17 and main adapter 20 internal faces form a sealing chamber, by flexible pipe 4, catch indoor pressure and the changes in flow rate of this enclosed cavity, are converted into electrical signal, can whether detect seal failure.After air bag 18 inflations, produce distortion.The rectangle moulding 19 being attached thereto is stretched laterally, and be fitted on main adapter 20 inwall discs, two air bags 18 and moulding 19 realize two seals." several " shape sealing gasket 17 both sides are arranged on main adapter 20 flanged surfaces by double threaded screw 12 laminatings, realize three seals.Two seals makes sealing effect more reliable.Black box can bear and independently take over 20 hydraulic pressure is 4bar, and within the scope of 2bar effectively, it is 7bar that maximum is born the swelling pressure to sealing, and the pressure that bears of air chamber pipeline is greater than 15bar.
The flexible pipe group that flexible pipe 4 is comprised of many flexible pipes, nylon cable tie 3 forms flexible pipe 4 for many flexible pipes are bundled together.
In conjunction with the accompanying drawings and embodiments the present invention is explained in detail above, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes various variations.The content not being described in detail in the present invention all can adopt prior art.
Claims (10)
1. the main adapter high water level of a primary side of steam generator closure plate, it is characterized in that: it comprises that two blocks of side plates (1), center plate (2), center plate (2) are arranged between two blocks of side plates (1) and center plate (2), two blocks of side plates (1) mix proportion completely circular structure, and every block of side plate (1) is equipped with detection components.
2. the main adapter high water level of a kind of primary side of steam generator according to claim 1 closure plate, it is characterized in that: described side plate (1) is the whole fan-shaped cavity type structure that is, side plate (1) is provided with interradial plate (103), two two bottom sides disc (105), two upper strata disc (104), flange (106), baffle plate (108) in bottom, in bottom, interradial plate (103) is positioned at the center of side plate (1) bottom, and two two bottom sides disc (105) respectively symmetry are arranged in the both sides of bottom interradial plate (103); Upper strata disc (104) is arranged in side plate (1) top Nei， upper strata disc (104) and is positioned between two bottom sides disc (105) and bottom interradial plate (103); The flange (106) that side plate (1) top outer rim is provided with, flange (106) is provided with marking rod mounting hole (107), and the sidewall of side plate (1) is provided with baffle plate (108), and baffle plate (108) is embedded in the sidewall of center plate (2).
3. the main adapter high water level of a kind of primary side of steam generator according to claim 1 and 2 closure plate, it is characterized in that: the cavity structure that described center plate (2) is rectangle for two ends circular arc, in the outer rim of center plate (2) both sides, be provided with two tapped holes (201), flange (202), two two bottom sides disc (203), two upper strata disc (204), four large square holes (205), interradial plate (206) in two bottoms, four small square holes (207), four draw-in grooves (208); In bottom, interradial plate (206) is positioned at center plate (2) bottom centre, and two two bottom sides disc (203) are arranged in interradial plate (206) both sides, bottom; Upper strata disc (204) is positioned at center plate (2) top, is arranged between bottom interradial plate (206) and two bottom sides disc (203) simultaneously; Center plate (2) both sides outer rim is provided with flange (202), is provided with tapped hole (201) and draw-in groove (208) on flange (202); Bottom small square hole (207) is positioned at large square hole (205) outside, and four small square holes (207) and four large square holes (205), all along center plate (2) center line, distribute in non-circular arc bilateral symmetry.
4. the main adapter high water level of a kind of primary side of steam generator according to claim 3 closure plate, it is characterized in that: described detection components consists of marking rod (13), spring (14), base pads (15), between marking rod (13) and side plate (1), cover has spring (14) and base pads (15), marking rod (13) middle and lower part is provided with boss, spring (14) is positioned at this boss and is provided with top, and base pads (15) is positioned at this boss bottom.
5. the main adapter high water level of a kind of primary side of steam generator according to claim 4 closure plate, it is characterized in that: described center plate (2), two blocks of side plates (1) are all embedded in black box, black box is by the sealing gasket (17) fitting tightly with side plate (1), center plate (2) bottom, be looped around the air bag (18) on sealing gasket (17) outer surface, the moulding (19) being arranged on air bag (18) outer surface forms, and base pads (15) is positioned between the boss bottom and sealing gasket (17) of marking rod (13).
6. the main adapter high water level of a kind of primary side of steam generator according to claim 5 closure plate, it is characterized in that: in described annular air-pocket (18) inner side, have an air-filled pore, sealing gasket (17), side plate (1) are all opened a pore that can be communicated with the air-filled pore of annular air-pocket (18) inner side separately, and the tail end of flexible pipe (4) is communicated with the air-filled pore of annular air-pocket (18) inner side by the pore on sealing gasket (17), side plate (1).
7. the main adapter high water level of a kind of primary side of steam generator according to claim 6 closure plate, it is characterized in that: described side plate (1) is fixedly installed in the main adapter of first side (20) by double threaded screw assembly (21), double threaded screw assembly (21) consists of dome nut (5), nut (6), double threaded screw (12), it is upper that stud (12) runs through side plate (1), sealing gasket (17) is arranged on main adapter (20) by side plate 1, and double threaded screw (12) top is provided with cheese head screw (5) and nut (6).
8. the main adapter high water level of a kind of primary side of steam generator according to claim 7 closure plate, is characterized in that: described double threaded screw assembly (21) is arranged in main adapter (20) by boss (7).
9. the main adapter high water level of a kind of primary side of steam generator according to claim 8 closure plate, it is characterized in that: described boss (7) is fixedly mounted on side plate (1) by fastener assembly, fastener assembly consists of dome nut (8), spring washer (9), plain washer (10), boss locating stud (11), boss locating stud (11) bottom is fastening with side plate (1), and boss locating stud (11) top is provided with dome nut (8), spring washer (9), plain washer (10).
10. the main adapter high water level of a kind of primary side of steam generator according to claim 9 closure plate, is characterized in that: described center plate (2) will be fixedly installed in main adapter (20) by locating stud (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234644.8A CN103542225B (en) | 2012-07-09 | 2012-07-09 | Primary side of steam generator main adapter high water level closure plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234644.8A CN103542225B (en) | 2012-07-09 | 2012-07-09 | Primary side of steam generator main adapter high water level closure plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542225A true CN103542225A (en) | 2014-01-29 |
| CN103542225B CN103542225B (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210234644.8A Active CN103542225B (en) | 2012-07-09 | 2012-07-09 | Primary side of steam generator main adapter high water level closure plate |
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| Country | Link |
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| CN (1) | CN103542225B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107722471A (en) * | 2017-10-23 | 2018-02-23 | 陕西特种橡胶制品有限公司 | Nuclear steam generator closure plate air bag resistance to irradiation rubber and preparation method thereof |
| CN107965620A (en) * | 2018-01-03 | 2018-04-27 | 上海核工程研究设计院有限公司 | A kind of steam generator water chamber head ozzle closure plate |
Citations (5)
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| US4482076A (en) * | 1979-02-02 | 1984-11-13 | Combustion Engineering, Inc. | Nozzle plug for submersible vessel |
| US4693278A (en) * | 1986-11-10 | 1987-09-15 | T. D. Williamson, Inc. | Safety closure member |
| US4770235A (en) * | 1986-05-16 | 1988-09-13 | Combustion Engineering, Inc. | Nozzle dam locking pin assembly |
| US20080179042A1 (en) * | 2006-11-21 | 2008-07-31 | Integrated Technologies, Inc. | Steam generator nozzle dam and method for installing and removing steam generator nozzle dam |
| CN202733317U (en) * | 2012-07-09 | 2013-02-13 | 核动力运行研究所 | High water blocking board of primary side main connecting pipe of steam generator |
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2012
- 2012-07-09 CN CN201210234644.8A patent/CN103542225B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4482076A (en) * | 1979-02-02 | 1984-11-13 | Combustion Engineering, Inc. | Nozzle plug for submersible vessel |
| US4770235A (en) * | 1986-05-16 | 1988-09-13 | Combustion Engineering, Inc. | Nozzle dam locking pin assembly |
| US4693278A (en) * | 1986-11-10 | 1987-09-15 | T. D. Williamson, Inc. | Safety closure member |
| US20080179042A1 (en) * | 2006-11-21 | 2008-07-31 | Integrated Technologies, Inc. | Steam generator nozzle dam and method for installing and removing steam generator nozzle dam |
| CN202733317U (en) * | 2012-07-09 | 2013-02-13 | 核动力运行研究所 | High water blocking board of primary side main connecting pipe of steam generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107722471A (en) * | 2017-10-23 | 2018-02-23 | 陕西特种橡胶制品有限公司 | Nuclear steam generator closure plate air bag resistance to irradiation rubber and preparation method thereof |
| CN107722471B (en) * | 2017-10-23 | 2020-07-31 | 陕西特种橡胶制品有限公司 | Radiation-resistant rubber for nuclear power steam generator closure plate air bag and preparation method thereof |
| CN107965620A (en) * | 2018-01-03 | 2018-04-27 | 上海核工程研究设计院有限公司 | A kind of steam generator water chamber head ozzle closure plate |
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| Publication number | Publication date |
|---|---|
| CN103542225B (en) | 2016-01-20 |
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