CS254668B1 - Plug into the barrel nozzle of the shut-off valve of the nuclear power plant - Google Patents
Plug into the barrel nozzle of the shut-off valve of the nuclear power plant Download PDFInfo
- Publication number
- CS254668B1 CS254668B1 CS851748A CS174885A CS254668B1 CS 254668 B1 CS254668 B1 CS 254668B1 CS 851748 A CS851748 A CS 851748A CS 174885 A CS174885 A CS 174885A CS 254668 B1 CS254668 B1 CS 254668B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- plug
- valve
- power plant
- nuclear power
- shut
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Pipe Accessories (AREA)
Abstract
Zátka je určená na utesnenie nátrubku hlavnej uzatváracej armatúry jadrovej elektrárně. Zátka je v nátrubku fixovaná pomocou čeiustí, ktoré sa opierajú o jeho kuželová část. Utesnenie sa dosiahne roztlačením krúžku medzi dvorná kuželovými taniermi. Ventil na zátke umožňuje drenáž potrubia. Zátka sa do nátrubku zavážu pomocou ramena zavěšeného na koiajnici.The plug is designed to seal the socket of the main shut-off valve of a nuclear power plant. The plug is fixed in the socket by means of jaws that rest on its conical part. The seal is achieved by pushing the ring between the two conical plates. The valve on the plug allows drainage of the pipe. The plug is screwed into the socket by means of an arm suspended from a rail.
Description
Vynález sa týká zátky na uzatvorenie nátrubku hlavnej uzatváracej armatúry jadrovej elektrárně počas jej odstávky pri výměně paliva.The invention relates to a plug for closing the sleeve of a main shut-off valve of a nuclear power plant during its refueling outage.
Dosial známe sposoby uzatvárania nátrubku, napr. vo formě gumového disku stláčaného dvoma přírubami pomocou skrutiek je v stiesnených priestoroch hlavnej uzatváracej armatúry ťažkopádne a náročné na čas. Iné riešenie vo formě pneumaticky rozpínaného tesnenia vyžaduje trvalé sledovanie a udržiavanie tlaku vzduchu v tesniacom prvku. Obidva sposoby nezaručujú bezpečná fixáciu zátky v nátrubku hlavnej uzatváracej armatúry pri zvýšení hladiny vody nad nátrubky reaktorovej nádoby.Hitherto known methods of closing the sleeve, e.g. in the form of a rubber disc pressed by two flanges by means of screws, it is cumbersome and time consuming in the confined spaces of the main shut-off valve. Another solution in the form of a pneumatically expanded seal requires continuous monitoring and maintenance of the air pressure in the sealing element. Both methods do not guarantee a secure fixation of the plug in the main shut-off valve sleeve when the water level rises above the reactor vessel sleeves.
Uvedené nedostatky odstraňuje zátka podlá vynálezu, ktorého podstatou je, že jeden z kuželových tanierov rozpínajúcich tesniaci krúžok, nesie čeluste ovládané tiahlami otočné upevněnými v križiaku hriadela, ktorý sa pomocou matice axiálně posúva. V spodnej časti zátky je drenážny ventil. Zátka sa do nátrubku zaváža pomocou ramena, ktoré sa posúva po kolejnici, položenej na delíacej rovině hlavnej uzatváracej armatúry. Rameno má na konci hlavicu, ktorá slúži na upínanie zátky, rozovretie čelustí a rozpínanie tesniaceho krúžku.The above-mentioned drawbacks are overcome by the plug according to the invention, which is based on the fact that one of the conical plates expanding the sealing ring carries the jaws actuated by pivotable rotatably mounted in the shaft crossover, which is axially displaced by the nut. There is a drain valve at the bottom of the plug. The stopper is fed into the sleeve by means of an arm which slides along the rail placed on the separating plane of the main shut-off valve. The arm has a head at the end which serves for clamping the stopper, opening the jaws and expanding the sealing ring.
Po zavezení zátky do nátrubku a rozovretí čelustí sa zátka oprie o kuželová časť nátrubku, čím sa dosiahne jej rýchla a spolahlivá fixácia. Po utěsnění sa rameno odpojí, čo umožní vykonávat opravy tesniacich ploch hlavnej uzatváracej armatúry. Po utěsnění ohidvoch nátrubkov je možno vnútorné plochy hlavnej uzatváracej armatúry dekontaminovat. Pri dekontaminácii sa na zátku nasadzuje vodotěsný kryt, ktorý chrání pohybový mechanizmus zátku před poškodením.After inserting the plug into the sleeve and opening the jaws, the plug is supported on the conical part of the sleeve for fast and reliable fixation. After sealing, the arm is disengaged, allowing the sealing surfaces of the main shut-off valve to be repaired. After sealing the sockets, the inner surfaces of the main shut-off valve can be decontaminated. During decontamination, the plug is fitted with a watertight cover to protect the plug mechanism from damage.
Na pripojenom výkrese je znázorněná zátka podlá vynálezu osadená v hlavnej uzatváracej armatúre.In the attached drawing, the plug according to the invention is shown mounted in the main shut-off valve.
Nátrubek hlavnej uzatváracej armatúry je utěsněný zátkou, ktorej jeden kuželový tanier nesie čeluste 1 rozpínané tiahlami 2 otočné uloženými v križiaku 3 na hriadeli 4, ktorého axiálny pohyb je ovládaný zvnútra hlavnej uzatváracej armatúry. V spodnej časti zátky je ventil 5 na drenážovanie potrubia před vybratím zátky z nátrubku. Pri dekontaminácii vnútra hlavnej uzatváracej armatúry sa na zátku nasadzuje kryt 6. Zátka sa zaváža do nátrubku pomocou ramena 7, ktoré má na konci hlavicu 8. Rameno sa pohybuje po kolajnici 9.The nozzle of the main shut-off valve is sealed by a plug whose one conical plate carries the jaws 1 expanded by rods 2 rotatably mounted in a crosshead 3 on the shaft 4, the axial movement of which is controlled from the inside of the main shut-off valve. At the bottom of the plug is a valve 5 for draining the pipe before removing the plug from the sleeve. During decontamination of the interior of the main shut-off fitting, the cover 6 is fitted to the plug.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS851748A CS254668B1 (en) | 1985-03-13 | 1985-03-13 | Plug into the barrel nozzle of the shut-off valve of the nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS851748A CS254668B1 (en) | 1985-03-13 | 1985-03-13 | Plug into the barrel nozzle of the shut-off valve of the nuclear power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS174885A1 CS174885A1 (en) | 1987-06-11 |
| CS254668B1 true CS254668B1 (en) | 1988-01-15 |
Family
ID=5352640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS851748A CS254668B1 (en) | 1985-03-13 | 1985-03-13 | Plug into the barrel nozzle of the shut-off valve of the nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS254668B1 (en) |
-
1985
- 1985-03-13 CS CS851748A patent/CS254668B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS174885A1 (en) | 1987-06-11 |
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