PL79319B2 - - Google Patents
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- Publication number
- PL79319B2 PL79319B2 PL16797474A PL16797474A PL79319B2 PL 79319 B2 PL79319 B2 PL 79319B2 PL 16797474 A PL16797474 A PL 16797474A PL 16797474 A PL16797474 A PL 16797474A PL 79319 B2 PL79319 B2 PL 79319B2
- Authority
- PL
- Poland
- Prior art keywords
- pump tube
- tightness
- closing
- test fluid
- gas
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000014785 Bergenia crassifolia Nutrition 0.000 description 1
- 240000004972 Bergenia crassifolia Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Description
Pierwszenstwo: Zgloszenie ogloszono: 02.12.1974 Opis patentowy opublikowano: 30.06.1975 79319 KI. 42k, 30/01 MKP G01m 3/08 ' ni A Twórcawynalazku: Edmund Strychalski Uprawniony z patentu tymczasowego': Instytut Badan Jadrowych, Warszawa (Polska) Sposób kontroli szczelnosci spoiny zamykajacej rurke pompowa obiektów wypelnionych gazem Przedmiotem wynalazku jest sposób kontroli szczelnosci spoiny zamykajacej rurke pompowa obiektów wypelnionych gazem, zwlaszcza koszu I kowanych bloków grafitowych stanowiacych elementy reflektora reakto¬ ra jadrowego.Dotychczas stosowany sposób kontroli szczelnosci spoiny zamykajacej rurke pompowa koszu Ikowanych bloków grafitowych wypelnionych gazem o cisnieniu 104 N/m2 polega na kontroli szczelnosci spoiny rurki pompowej pozostajacej w czesci aparatury napelniajacej poprzez pomiar zmiany cisnienia. Na tej podstawie ocenia sie szczelnosc czesci spoiny rurki pompowej znajdujacej sie w koszulkowanym bloku grafitowym.Opisany sposób polega na posredniej ocenie szczelnosci spoiny koncowej rurki pompowej, nie daje wiec bezwzglednej oceny szczelnosci spoiny zamykajacej rurke pompowa w bloku, a uzyskanie wymaganej doklad¬ nosci kontroli badanej spoiny jest trudne i pracochlonne.Sposób wedlug wynalazku polega na tym, ze badana spoine zamykajaca rurke pompowa umieszcza sie w przestrzeni prózniowej laczówki poprzez uszczelnienie, polaczonej ze znanym wykrywaczem przecieku plynu próbnego. Do gazowego wypelnienia obiektu dodaje sie plyn próbny w ilosci powyzej 1%.Zaleta sposobu wedlug wynalazku jest mozliwosc bezposredniego pomiaru szczelnosci spoiny zamykajacej rurke pompowa badanego obiektu napelnionego gazem o cisnieniu od 102 ^ do 105 ^ w zakresie powyzej «0r9Nm mm tek..' . ... .. ... ¦".__ Przyklad wykonania sposobu wedlug wynalazku jest objasniony na rysunku przedstawiajacym schemat polaczen elementów ukladu badania szczelnosci spoiny zamykajacej 1 rurke pompowa 2 koszulkowanego bloku grafitowego 3. Spoina zamykajaca 1 metalowa rurke pompowa 2 o srednicy 8 mm koszulkowanego bloku grafitowego 3 o objetosci gazowej 5x10~3m3 i o cisnieniu 10*£}2 Jest poprzez elastyczne uszczelnienie 4 polaczona laczówka 6 do helowego wykrywacza nieszczelnosci 5. Koszulkowany blok grafitowy 3 jest napeln¬ iony mieszanina gazów zawierajacych hel w ilosci 10%. Nieszczelnosc uszczelnienia 4 ograniczajaca czulosc badania jest mniejsza niz 1,33* 10~6 Jj£.Po wstepnym odpompowaniu objetosci laczówki 6 do cisnienia 10~3£2 dokonuje sie pomiaru przecieku.Pomiar przecieku, interpretacje wyników oraz ocene nieszczelnosci spoiny zamykajacej t rurke pompowa 2 przeprowadza sie znanymi sposobami.2 79 319 PLPriority: Application announced: 02/12/1974 Patent description was published: 06/30/1975 79319 KI. 42k, 30/01 MKP G01m 3/08 'ni A Creator of the invention: Edmund Strychalski Authorized under the provisional patent': Instytut Badan Nuclearowych, Warsaw (Poland) Method of checking the tightness of the weld closing the pump pipe of objects filled with gas The subject of the invention is the method of checking the tightness of the weld closing the pipe for gas-filled objects, in particular the basket and forged graphite blocks that are elements of the reflector of the nuclear reactor. The method used so far to check the tightness of the joint closing the pump tube of the basket I-shaped graphite blocks filled with gas with a pressure of 104 N / m2 consists in checking the tightness of the joint of the pump tube remaining in part filling apparatus by measuring the pressure change. On this basis, the tightness of the weld part of the pump tube located in the coated graphite block is assessed. The described method consists in indirectly assessing the tightness of the final weld of the pump tube, therefore it does not give an absolute assessment of the tightness of the weld closing the pump tube in the block, and obtaining the required accuracy of the tested control The method according to the invention is based on the fact that the tested joint closing the pump tube is placed in the vacuum space of the coupler through a seal, connected to a known test fluid leak detector. The test fluid is added to the gas filling of the object in an amount exceeding 1%. The advantage of the method according to the invention is the possibility of direct measurement of the tightness of the joint closing the pumping pipe of the tested object filled with gas with a pressure of 102 ^ to 105 ^ in the range above “0r9Nm mm tek .. '. ... .. ... ¦ ".__ An example of the implementation of the method according to the invention is explained in the drawing showing the connection diagram of the elements of the system for testing the tightness of the joint closing the 1 pump tube 2 the coated graphite block 3. The closing weld 1 metal pump tube 2 with a diameter of 8 mm The jacketed graphite block 3 with a gas volume of 5x10 ~ 3m3 and a pressure of 10 * £} 2 It is through a flexible seal 4 connected connector 6 to a helium leak detector 5. The jacketed graphite block 3 is filled with a 10% helium gas mixture. 4 the limiting sensitivity of the test is lower than 1.33 * 10 ~ 6 Jj £. After initial pumping of the volume of the connector 6 to a pressure of 10 ~ 3 £ 2, the leakage measurement is carried out. Leakage measurement, interpretation of the results and evaluation of the leakage of the weld closing the pump tube 2 is carried out by known methods. 2 79 319 PL
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL16797474A PL79319B2 (en) | 1974-01-08 | 1974-01-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL16797474A PL79319B2 (en) | 1974-01-08 | 1974-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL79319B2 true PL79319B2 (en) | 1975-06-30 |
Family
ID=19965638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL16797474A PL79319B2 (en) | 1974-01-08 | 1974-01-08 |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL79319B2 (en) |
-
1974
- 1974-01-08 PL PL16797474A patent/PL79319B2/pl unknown
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