HRP20120629A2 - Hydraulic device for settling damage of underside pipeline flanged joint under pressure - Google Patents

Abstract

Kod podvodnih cjevovoda pod tlakom, nakon dulje eksploatacije, javlja se problem popuštanja prirubničkih vijčanih spojeva ili pucanja samih vijaka i curenja medija. Takva oštećenja prirubničkih spojeva treba brzo sanirati kako ne bi nastala velika materijalna šteta. Bit izuma je hidraulični uređaj za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda (G) koji se sastoji od spojke (A) i nosača spojke (D). Nosač spojke i spojka su međusobno spojeni tako da se mogu lako odvojiti. Spojka ima dva pomična kraka (B i C) s kojima se upravlja hidrauličnim putem. Pomičnim krakovima se kod saniranja radijalno obuhvaćaju i aksijalno pritežu prirubnice. Spojka preuzima silu pritezanja prirubnica s vijaka na sebe, tako da vijci postaju beskorisni. Spojka ostaje trajno na mjestu saniranog prirubničkog spoja. Nosač spojke sačinjavaju dva fiksna kraka (E i F). Na fiksnom kraku (E) se nalazi upravljačka ploča (24) s hidrauličnim priključcima (25). U fiksnim krakovima nosača spojke su smješteni hidraulični cilindri (27) za upravljanje pomičnim krakovima (B i C) spojke kod radijalnog obuhvaćanja i aksijalnog pritezanja prirubnica (35). Nakon saniranja oštećenja, nosač spojke (D) se odvaja od spojke (A) i podiže na površinu, te se koristi za spuštanje slijedeće spojke. Upravljanje hidrauličnim uređajem obavlja se daljinski s podvodnog robota koji je u tu svrhu opremljen podvodnim kamerama.With underwater pipelines under pressure, after prolonged exploitation, there is a problem of loosening flange screw connections or cracking the screws themselves and leaking media. Such damage to the flange joints should be rapidly repaired so that no material damage is caused. The essence of the invention is a hydraulic device for repairing damage to an underwater pipeline (G) flange connection consisting of a clutch (A) and a clutch support (D). The clutch carrier and the clutch are interconnected so that they can be easily detached. The coupling has two movable arms (B and C) that are hydraulically controlled. The removable arms radially engage and axially tighten the flanges when repairing. The coupling takes the force of tightening the flanges from the bolts to itself so that the bolts become useless. The coupling remains permanently in place of the repaired flange joint. The clutch carrier consists of two fixed arms (E and F). On the fixed arm (E) there is a control panel (24) with hydraulic ports (25). Hydraulic cylinders (27) are provided in the fixed clutch support arms to control the clutch movable arms (B and C) for radial engagement and axial flange tightening (35). After repairing the damage, the clutch support (D) is detached from the clutch (A) and raised to the surface and used to lower the next clutch. The hydraulic device is operated remotely from an underwater robot equipped with underwater cameras for this purpose.

Description

Područje tehnike The field of technology

Izum se odnosi na uređaj za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom kroz koji se transportiraju različiti mediji. The invention relates to a device for repairing damage to the flange joint of an underwater pipeline under pressure through which various media are transported.

Prema Međunarodnoj klasifikaciji patenata (MKP) izum pripada području F – strojarstvo, razred F16 – cijevi i cijevni spojevi, podrazred F16D – hidraulične i pneumatske spojke. According to the International Classification of Patents (ICPA), the invention belongs to field F - mechanical engineering, class F16 - pipes and pipe joints, subclass F16D - hydraulic and pneumatic couplings.

Tehnički problem Technical problem

Tehnički problem će biti opisan na primjeru podvodnih cjevovoda kroz koje se transportira nafta. Slični problemi nastaju i kod cjevovoda kroz koje teku neki drugi mediji. The technical problem will be described on the example of underwater pipelines through which oil is transported. Similar problems arise with pipelines through which some other media flow.

Veliki brodovi - tankeri za prijevoz nafte obično se usidre i privežu na plovećem sidrištu koje je dosta udaljeno od rezervoara na kopnu. Poznato je da se nafta od tankera do rezervoara u terminalima na kopnu transportira cjevovodima položenim na morsko dno. Ako je cjevovod sastavljen od više cijevi, svaka cijev ima na krajevima prirubnicu preko koje se vijcima spaja s prirubnicom na drugoj cijevi. Broj cijevi i spojnih mjesta ovisi o udaljenosti tankera od kopna. Large ships - oil tankers are usually anchored and moored at a floating anchorage that is quite far from the reservoir on land. It is known that oil is transported from tankers to reservoirs in onshore terminals through pipelines laid on the seabed. If the pipeline is made up of several pipes, each pipe has a flange at the ends through which it is connected to the flange of another pipe with screws. The number of pipes and connection points depends on the distance of the tanker from the mainland.

Kod podmorskih cjevovoda, nakon dulje eksploatacije, iz više razloga javlja se problem popuštanja prirubničkih spojeva. Uslijed zamora materijala, kod prirubničkih spojeva dolazi ili do popuštanja vijčanih spojeva ili do pucanja samih vijaka. Uslijed toga na takvim spojnim mjestima dolazi do curenja nafte koja je u cjevovodu pod tlakom. Takva oštećenja prirubničkih spojeva treba brzo sanirati kako ne bi nastala velika materijalna šteta i ekološka katastrofa. In the case of submarine pipelines, after prolonged exploitation, the problem of loosening of the flange joints occurs for several reasons. Due to the fatigue of the material, in the case of flanged joints, either the loosening of the screw joints or the cracking of the screws themselves occurs. As a result, the oil that is under pressure in the pipeline leaks at such connection points. Such damage to the flange joints should be repaired quickly so as not to cause major material damage and an environmental disaster.

Stanje tehnike State of the art

Poznato je da se problem saniranja oštećenja prirubničkih spojeva danas rješava zamjenom vijaka na prirubničkim spojevima uz pomoć posebno konstruiranih robota, ako se cjevovod nalazi na većoj dubini, ili uz pomoć ronioca, ako se cjevovod nalazi na manjoj dubini. U tom slučaju se zamjena vijaka odvija postepeno vijak po vijak, te samim time operacija teče prilično sporo. Naime, za zamjena vijaka jednog prirubničkog spoja potrebno je mnogo vremena. U tu svrhu se angažira posebni specijalizirani brod tzv.“Supplier“ koji s površine mora spušta potrebnu opremu i alate, te s robota upravlja i nadgleda čitavim postupkom uz pomoć posebnih kamera i hidraulike. Ovakva sanacija donosi velike gubitke naftnim kompanijama, jer je pored gubitka nafte potrebno angažirati vrlo skupi specijalni brod s posadom i potrebnom tehnikom. It is known that today the problem of repairing damage to flange joints is solved by replacing screws on flange joints with the help of specially designed robots, if the pipeline is located at a greater depth, or with the help of a diver, if the pipeline is located at a shallower depth. In this case, the screws are replaced gradually, screw by screw, and thus the operation proceeds quite slowly. Namely, it takes a long time to replace the screws of one flange connection. For this purpose, a special specialized ship called "Supplier" is hired, which lowers the necessary equipment and tools from the surface of the sea, and manages and monitors the entire process from a robot with the help of special cameras and hydraulics. This kind of rehabilitation brings big losses to the oil companies, because in addition to the loss of oil, it is necessary to hire a very expensive special ship with a crew and the necessary equipment.

Bit izuma The essence of invention

Bit izuma je hidraulični uređaj za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom. The essence of the invention is a hydraulic device for repairing damage to the flange joint of an underwater pipeline under pressure.

Hidraulični uređaj za saniranje oštećenja prirubničkog spoja obuhvaća spojku i nosač spojke. Nosač spojke i spojka su međusobno spojeni tako da se mogu lako odvojiti. Na nosač spojke je spojeno uže kojim se hidraulični uređaj spušta s plovila do oštećenog prirubničkog spoja. The hydraulic device for repairing damage to the flange connection includes a clutch and a clutch support. The clutch support and the clutch are connected to each other so that they can be easily separated. A rope is connected to the clutch support, which lowers the hydraulic device from the vessel to the damaged flange joint.

Spojku sačinjavaju dva pomična kraka s kojima se upravlja hidrauličnim putem. Pomičnim krakovima se radijalno obuhvaćaju i aksijalno pritežu prirubnice. Spojka preuzima silu pritezanja prirubnica s vijaka na sebe, tako da vijci postaju beskorisni. Kada se spojka postavi, više se ne skida – ona ostaje trajno na mjestu saniranog prirubničkog spoja. The clutch consists of two movable arms that are operated hydraulically. The movable arms radially enclose and axially tighten the flanges. The clutch takes the tightening force of the flanges from the bolts onto itself, so the bolts become useless. Once the coupling is installed, it can no longer be removed - it remains permanently in place of the repaired flange connection.

Nosač spojke sačinjavaju dva fiksna kraka. Na jednom fiksnom kraku nosača spojke se nalazi upravljačka ploča s hidrauličnim priključcima. U oba fiksna kraka nosača spojke su smješteni hidraulični pogoni za upravljanje pomičnim krakovima spojke kod radijalnog obuhvaćanja i aksijalnog pritezanja prirubnica. Nakon obavljenog saniranja oštećenja, nosač spojke se odvaja od spojke i podiže na površinu, te se koristi za spuštanje slijedeće spojke. The clutch support consists of two fixed arms. On one fixed arm of the clutch support there is a control panel with hydraulic connections. Both fixed arms of the clutch support are equipped with hydraulic drives for controlling the movable arms of the clutch during radial engagement and axial tightening of the flanges. After repairing the damage, the clutch carrier is separated from the clutch and raised to the surface, and is used to lower the next clutch.

Upravljanje hidrauličnim uređajem obavlja se, preko upravljačke ploče na nosaču spojke, daljinski s robota koji je u tu svrhu opremljen podvodnim kamerama. The control of the hydraulic device is carried out, via the control panel on the clutch support, remotely from the robot, which is equipped with underwater cameras for this purpose.

Kratki opis slika Short description of the pictures

Slika 1. prikazuje hidraulični uređaj za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom – sprijeda. Figure 1 shows the hydraulic device for repairing damage to the flange joint of an underwater pipeline under pressure - from the front.

Slika 2. prikazuje hidraulični uređaj – bočno. Figure 2 shows the hydraulic device - from the side.

Slika 3. prikazuje spojku u otvorenom položaju – sprijeda. Figure 3 shows the clutch in the open position - from the front.

Slika 4. prikazuje spojku u zatvorenom položaju – sprijeda. Figure 4 shows the clutch in the closed position - from the front.

Slika 5. prikazuje spojku – bočno. Figure 5 shows the clutch - sideways.

Slika 6. prikazuje spojku u zatvorenom položaju – odozgo. Figure 6 shows the clutch in the closed position - from above.

Slika 7. prikazuje spojku u zatvorenom položaju – odozdo. Figure 7 shows the clutch in the closed position - from below.

Slika 8. prikazuje spojku u zatvorenom položaju – iz perspektive. Figure 8 shows the clutch in the closed position - from a perspective.

Slika 9. prikazuje pomični krak C – pogled s unutarnje strane. Figure 9 shows the movable arm C - view from the inside.

Slika 10. prikazuje pomični krak C – s unutarnje strane iz perspektive. Figure 10 shows the movable arm C - from the inside in perspective.

Slika 11. prikazuje pomični krak B – pogled s unutarnje strane. Figure 11 shows the movable arm B - view from the inside.

Slika 12. prikazuje pomični krak B – s unutarnje strane iz perspektive. Figure 12 shows the movable arm B - from the inside perspective.

Slika 13. prikazuje vanjsku čahuru s vanjskim krakom – pogled iz perspektive. Figure 13 shows the outer sleeve with the outer leg - perspective view.

Slika 14. prikazuje granični prsten s konusnim klinovima – pogled iz perspektive. Figure 14 shows a boundary ring with conical wedges - perspective view.

Slika 15. prikazuje segment unutarnje čahure – iz perspektive. Figure 15 shows a segment of the inner sleeve - from a perspective.

Slika 16. prikazuje nosač spojke – sprijeda. Figure 16 shows the clutch support - front.

Slika 17. prikazuje nosač spojke bez prednjeg poklopca – pogled sprijeda. Figure 17 shows the clutch carrier without the front cover - front view.

Slika 18. prikazuje nosač spojke – bočno. Figure 18 shows the clutch support - side view.

Slika 19. prikazuje nosač spojke – odozgo. Figure 19 shows the clutch support - from above.

Slika 20. prikazuje hidraulični uređaj s otvorenom spojkom iznad prirubničkog spoja na podvodnom cjevovodu – pogled iz perspektive. Figure 20 shows a hydraulic device with an open coupling above a flange connection on an underwater pipeline - a perspective view.

Slika 21. prikazuje hidraulični uređaj sa spojkom koja je postavljena na prirubnički spoj podvodnog cjevovoda – pogled iz perspektive. Figure 21 shows a hydraulic device with a coupling mounted on a flange connection of an underwater pipeline - a perspective view.

Slika 22. prikazuje hidraulični uređaj sa spojkom koja je postavljena na prirubnički spoj podvodnog cjevovoda – pogled sprijeda. Figure 22 shows a hydraulic device with a coupling mounted on a flange connection of an underwater pipeline - front view.

Slika 23. prikazuje hidraulični uređaj sa Sl. 22. - bočno. Figure 23 shows the hydraulic device from FIG. 22. - laterally.

Slika 24. prikazuje hidraulični uređaj sa Sl. 22. – odozgo. Figure 24 shows the hydraulic device from FIG. 22. – from above.

Slika 25. prikazuje spojku s pomičnim kracima na prirubničkom spoju cjevovoda – pogled sprijeda. Figure 25 shows a movable arm coupling on a flanged pipe joint - front view.

Slika 26. prikazuje spojku s pomičnim kracima čvrsto pritegnutim na prirubničkom spoju cjevovoda – pogled sprijeda. Figure 26 shows the coupling with the movable arms tightly clamped on the flange connection of the pipeline - front view.

Slika 27. prikazuje spojku s pomičnim kracima čvrsto pritegnutim na prirubničkom spoju cjevovoda – presjek Z – Z sa Sl.24. Fig. 27 shows a coupling with movable arms firmly tightened on the flange connection of the pipeline - section Z - Z from Fig. 24.

Slika 28. prikazuje spojku s pomičnim kracima čvrsto pritegnutim na prirubničkom spoju cjevovoda – presjek M – M sa Sl.25. Fig. 28 shows a coupling with movable arms firmly tightened on the flange connection of the pipeline - section M - M from Fig. 25.

Slika 29. prikazuje spojku s pomičnim kracima čvrsto pritegnutim na prirubničkom spoju cjevovoda – uvećani detalj U sa Sl.28. Fig. 29 shows a coupling with movable arms tightly tightened on the flange connection of the pipeline - enlarged detail U from Fig. 28.

Slika 30. prikazuje spojku čvrsto pritegnutu na saniranom oštećenom prirubničkom spoju cjevovoda – položaj u kojem spojka trajno ostane nakon što se nosač odvoji od spojke. Figure 30 shows the coupling tight on a repaired damaged flange joint of a pipeline - the position in which the coupling remains permanently after the support is separated from the coupling.

Detaljan opis izvedbe i načina funkcioniranja izuma Detailed description of the performance and way of functioning of the invention

Hidraulični uređaj za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom obuhvaća spojku A i nosač spojke D, Sl. 1. i 2. Upravljanje hidrauličnim uređajem obavlja se daljinski s robota koji je opremljen podvodnim kamerama. U tu svrhu na nosaču spojke je ugrađena upravljačka ploča s hidrauličnim spojevima za hidraulične pogone na nosaču i spojki. The hydraulic device for repairing damage to the flange connection of the underwater pipeline under pressure includes coupling A and coupling support D, Fig. 1. and 2. Control of the hydraulic device is performed remotely from a robot equipped with underwater cameras. For this purpose, a control panel with hydraulic connections for hydraulic drives on the support and clutch is installed on the clutch support.

Spojka i nosač spojke su međusobno spojeni tako da se nakon obavljenog saniranja oštećenog prirubničkog spoja, hidrauličnom komandom automatski odvoje. Spojka ostane trajno na saniranom prirubničkom spoju cjevovoda, a nosač spojke se podiže i koristi za slijedeću akciju. The clutch and the clutch carrier are connected to each other so that after the repair of the damaged flange connection, they are automatically separated by hydraulic command. The coupling remains permanently on the repaired flange connection of the pipeline, and the coupling carrier is lifted and used for the next action.

Opis izvedbe spojke A Description of clutch performance A

Spojka A, Sl. 3. do Sl. 15., obuhvaća dva pomična kraka: pomični krak B i pomični krak C. Pomični krakovi su dvije identične polovine jedne spojke koji su međusobno spojeni osovinom 6 oko koje se zakreću kod zatvaranja i otvaranja spojke. Svaki pomični krak, nakon zatvaranja, obuhvaća s bočne strane istovremeno jednu polovinu obiju prirubnica na podvodnom cjevovodu. Upravljanje pomičnim krakovima spojke kod saniranja oštećenja na prirubničkom spoju obavlja se hidrauličnim pogonom. Clutch A, Fig. 3. to Sl. 15., includes two movable arms: movable arm B and movable arm C. The movable arms are two identical halves of one clutch that are connected to each other by shaft 6 around which they rotate when closing and opening the clutch. Each movable arm, after closing, covers from the side at the same time one half of both flanges on the underwater pipeline. The control of the movable arms of the clutch when repairing damage to the flange connection is performed by a hydraulic drive.

Pomični krak B i pomični krak C imaju kućište 1. Kućište 1 na gornjem i donjem dijelu završava uškama u obliku velikog slova U. Gornje uške 2 na pomičnom kraku B ulaze između gornjih uški 4 na pomičnom kraku C. Kroz gornje uške je izveden otvor za osovinu 6 oko koje se zakreću pomični krakovi B i C. Između donjih uški 3 na pomičnom kraku B ulaze donje uške 5 sa pomičnog kraka C. Na donje uške 3 pomičnog kraka B i na gornje uške 4 pomičnog kraka C postavljeni su hidraulični cilindri 7 za blokiranje pomičnih krakova u zatvorenom položaju na prirubničkom spoju G. Na kućište pomičnog kraka B i kućište pomičnog kraka C su učvršćeni oslonci 9 za hidraulični pogon 27 za radijalno i aksijalno pritezanje krakova na prirubnice 35. U kućištu pomičnog kraka B i kućištu pomičnog kraka C su smještene po dvije vanjske navojne čahure 11 koje funkcioniraju kao matice. Vodeći prsteni 14 omogućavaju rotaciju vanjskih čahura 11 u kućištima 1. Svaka vanjska navojna čahura, u svakom pomičnom kraku B i C, ima krak 13 izvan kućišta. Na krak 13 se zakači klipnjača 28 hidrauličnog pogona 27 sa nosača spojke D kad se obavlja radijalno i aksijalno pritezanje pomičnih krakova na prirubnice, Sl. 21. Movable arm B and movable arm C have a housing 1. Housing 1 on the upper and lower part ends with lugs in the shape of the capital letter U. The upper lugs 2 on the movable arm B enter between the upper lugs 4 on the movable arm C. Through the upper lugs there is an opening for the shaft 6 around which the movable arms B and C rotate. Between the lower lugs 3 on the movable arm B, the lower lugs 5 from the movable arm C enter. On the lower lugs 3 of the movable arm B and on the upper lugs 4 of the movable arm C, hydraulic cylinders 7 are placed for blocking of the movable arms in the closed position at the flange connection G. Supports 9 for the hydraulic drive 27 for radial and axial tightening of the arms on the flanges 35 are attached to the housing of the movable arm B and the housing of the movable arm C. In the housing of the movable arm B and the housing of the movable arm C are placed by two external threaded bushings 11 that function as nuts. The guide rings 14 enable rotation of the outer sleeves 11 in the housings 1. Each outer threaded sleeve, in each movable arm B and C, has an arm 13 outside the housing. The piston rod 28 of the hydraulic drive 27 is attached to the arm 13 from the clutch support D when radial and axial tightening of the movable arms to the flanges is performed, Fig. 21.

Ispod vanjskih navojnih čahura 11, prema unutrašnjosti spojke, smještene su dvije unutarnje navojne čahure. Unutarnje navojne čahure su izvedene od više jednakih dijelova segmenata 15, Sl. 15. Unutarnje navojne čahure funkcioniraju kao vijak za vanjske navojne čahure. Segmenti 15 unutarnje navojnih čahura su fiksirani bočnim graničnim prstenima 18 koji su smješteni u kućištima 1. Granični prsteni, Sl. 14., imaju konusne klinove 19 koji su uvučeni u konusne utore 17 na segmentima 15. Segmenti 15 unutarnje navojne čahure su osigurani protiv rotacije bočnim prstenom 20 u poklopcima kućišta. Konusni klinovi omogućavaju segmentima istovremeno pomicanje u radijalnom i aksijalnom smjeru. Podizanjem vanjskih krakova 13 istovremeno se zakreću vanjske navojne čahure 11 u pomičnim krakovima B i C, kad je spojka u zatvorenom položaju. Vanjske navojne čahure se zakreću kao matice oko unutarnjih navojnih čahura koje se ponašaju kao mirujući vijak. Below the outer threaded bushings 11, towards the inside of the clutch, there are two inner threaded bushings. Internal threaded bushings are made of several equal parts of segments 15, Fig. 15. The inner threaded bushings function as a screw for the outer threaded bushings. The segments 15 of the internal threaded bushings are fixed by the side boundary rings 18 which are located in the housings 1. Boundary rings, Fig. 14., have conical pins 19 which are inserted into conical grooves 17 on the segments 15. The segments 15 of the inner threaded sleeve are secured against rotation by a side ring 20 in the housing covers. Conical wedges enable the segments to move simultaneously in the radial and axial directions. By raising the outer arms 13, the outer threaded bushings 11 in the movable arms B and C are simultaneously rotated, when the clutch is in the closed position. The outer threaded bushings rotate like nuts around the inner threaded bushings which act like a stationary screw.

Između gornjih uški 4, na pomičnom kraku C, ugrađen je hidraulični pogon 10 za zatvaranje i otvaranje pomičnih krakova B i C. Na bočnom stranama pomičnih krakova B i C su učvršćeni cink protektori 22. Between the upper lugs 4, on the movable arm C, a hydraulic drive 10 is installed for closing and opening the movable arms B and C. Zinc protectors 22 are fixed on the sides of the movable arms B and C.

Na osovini 6, koja spaja oba pomična kraka B i C, nalazi se svornjak 23 koji služi za povezivanje spojke A s nosačem spojke D. On the shaft 6, which connects both movable arms B and C, there is a bolt 23 that serves to connect the clutch A with the clutch carrier D.

S obzirom na to da spojka A ostaje trajno na saniranom prirubničkom spoju podvodnog cjevovoda G, Sl. 30., na pomičnim krakovima B i C su ugrađeni cink protektori 22 koji sprječavaju nastanak korozije odnosno čuvaju spojku od štetnog djelovanja galvanskih struja koje su u takvim medijima i metalnim sklopovima neminovne. Considering that the coupling A remains permanently on the repaired flange connection of the underwater pipeline G, Fig. 30., zinc protectors 22 are installed on the movable arms B and C, which prevent the occurrence of corrosion, i.e. protect the coupling from the harmful effects of galvanic currents, which are inevitable in such media and metal assemblies.

Opis izvedbe nosača spojke D Description of the performance of the clutch support D

Nosač spojke D, Sl. 16. do Sl. 19., obuhvaća dva fiksna kraka: fiksni krak E i fiksni krak F. Na fiksnom kraku E je smještena upravljačka ploča 24 s hidrauličnim priključcima 25 i indikatorom položaja 26. U fiksnom krakovima nosača, Sl. 17., smješteni su hidraulični pogoni 27 za upravljanje pomičnim krakovima spojke kod radijalnog obuhvaćanja i aksijalnog pritezanja prirubnica. Nakon obavljenog saniranja oštećenog prirubničkog spoja, nosač se odvoji od spojke i podigne na površinu, te se koristi kod slijedećeg saniranja oštećenja prirubničkog spoja. Clutch support D, Fig. 16 to Sl. 19., includes two fixed arms: fixed arm E and fixed arm F. On the fixed arm E there is a control panel 24 with hydraulic connections 25 and a position indicator 26. In the fixed arms of the carrier, Fig. 17., hydraulic drives 27 are located for controlling the movable clutch arms during radial engagement and axial tightening of the flanges. After the repair of the damaged flange connection, the support is separated from the coupling and raised to the surface, and is used in the next repair of damage to the flange connection.

Nakon što se nosač spojke D, preko svornjaka 23, spoji sa spojkom A i sajlom 32 za spuštanje uređaja, dizalica vrši njihovo spuštanje do oštećenog prirubničkog spoja G na podvodnom cjevovodu. After coupling carrier D is connected to coupling A and cable 32 for lowering the device, via bolt 23, the crane lowers them to the damaged flange connection G on the underwater pipeline.

Upravljanje hidrauličnim uređajem vrši se sa podvodnog robota koji se na hidraulični uređaj spaja preko upravljačke ploče 24 s hidrauličnim priključcima 25 na fiksnom kraku E nosača spojke. Hidraulični pogoni 27, koji služe za radijalno i aksijalno stezanje pomičnih krakova B i C spojke, se nalaze unutar fiksnih nosača E i F nosača spojke. Budući da se prirubnički spoj G nalazi na velikoj dubini, nosač spojke D se, nakon stezanja spojke oko prirubnica, sam uz pomoć hidraulike, otkači od spojke. U tu svrhu na nosaču spojke postoje pomoćni cilindri 29 za manipuliranje hidrauličnim pogonima 27 za radijalno i aksijalno stezanje pomičnih krakova spojke odnosno rotaciju i translataciju pomoćnih krakova B i C spojke i njihove kombinacije u prostoru. The hydraulic device is controlled from an underwater robot that is connected to the hydraulic device via the control panel 24 with hydraulic connections 25 on the fixed arm E of the clutch support. Hydraulic drives 27, which serve for radial and axial clamping of movable arms B and C of the clutch, are located inside the fixed supports E and F of the clutch support. Since the flange joint G is located at a great depth, the clutch support D, after tightening the clutch around the flanges, detaches itself from the clutch with the help of hydraulics. For this purpose, there are auxiliary cylinders 29 on the clutch support for manipulating hydraulic drives 27 for radial and axial clamping of the movable clutch arms, i.e. rotation and translation of the auxiliary clutch arms B and C and their combinations in space.

Podvodni robot na sebi ima podvodnu kameru uz pomoć koje se vrši nadziranje i kontrola cijelog procesa, a na nosaču spojke D u tu svrhu postoje i posebni indikatori položaja 26 koji se nalaze na upravljačkoj ploči 24, Sl.16. Nakon što se hidraulični pogoni otkače i odmaknu od spojke, robot također mora otkačiti sve svoje hidraulične spojeve sa nosača spojke. To se obavlja uz pomoć posebno dizajniranog hidrauličnog priključka 25 koji je prikačen na upravljačku ploču 24. Kad se hidraulični spojevi robota otkače od nosača spojke, on se slobodno podiže i premješta na novu poziciju, za spuštanje nove spojke. The underwater robot has an underwater camera on it, with the help of which the entire process is monitored and controlled, and for this purpose, there are special position indicators 26 on the clutch support D, which are located on the control panel 24, Fig. 16. Once the hydraulic drives are disconnected and away from the clutch, the robot must also disconnect all of its hydraulic connections from the clutch mount. This is done with the help of a specially designed hydraulic connection 25 that is attached to the control panel 24. When the robot's hydraulic connections are disconnected from the clutch support, it is free to lift and move to a new position, to lower a new clutch.

Način funkcioniranja izuma Mode of operation of the invention

Kompletiranje hidrauličnog uređaja za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom vrši se na kopnu ili plovilu, a dizalicom spušta do oštećenog prirubničkog spoja. Način funkcioniranja je prikazan na Sl. 20. do Sl. 30. Completing the hydraulic device for repair of damage to the flange joint of an underwater pipeline under pressure is done on land or on a vessel, and is lowered to the damaged flange joint with a crane. The mode of functioning is shown in Fig. 20 to Sl. 30.

Spojka A se preko svornjaka 23 spaja na nosač spojke D. Istovremeno se sve hidraulične cijevi s brzim hidrauličnim spojnicama s nosača spojke i spojke spajaju na hidraulične priključke 25 na upravljačkoj ploči 24. U pripremnom stanju spojka A je u otvorenom položaju, Sl. 20., i zajedno s nosačem se spušta ispod morske površine do oštećenog prirubničkog spoja G na podvodnom cjevovodu 33. Kad se spojka A dovoljno približi prirubničkom spoju G, vrši se lagano zatvaranje pomičnih krakova spojke B i C. Tu radnju obavlja hidraulični cilindar 10 za zatvaranje pomičnih krakova. Zatvaranje i spajanje pomičnih krakova se vrši uz istovremeno praćenje podvodnim kamerama koje se nalaze na podvodnom robotu. Ako je ostvareni položaj točan, pomični krakovi B i C spojke će se zatvoriti potpuno oko prirubnica 35 na cjevovodu 33. Ako se to ne dogodi – pomični krakovi spojke se neće potpuno zatvoriti i blokirati, tako da se ne može nastaviti daljnja procedura spajanja. Tek kada se dvije polovice spojke, odnosno pomični krakove B i C, potpuno zatvore, Sl. 21., cilindri 7 će svornjacima 8 izvršiti blokiranje položaja spojke na prirubničkom spoju. Nakon blokiranja položaja spojka je fiksirana u zatvorenom položaju ali još uvijek relativno slobodna u radijalnom smjeru i spremna je za stezanje. Clutch A is connected to clutch support D via bolt 23. At the same time, all hydraulic pipes with quick hydraulic couplings from the clutch support and clutch are connected to hydraulic connections 25 on control panel 24. In the preparatory state, clutch A is in the open position, Fig. 20., and together with the carrier it descends below the sea surface to the damaged flange connection G on the underwater pipeline 33. When the coupling A gets close enough to the flange connection G, the movable arms of the coupling B and C are gently closed. This action is performed by the hydraulic cylinder 10 for closing the movable arms. Closing and connecting the movable arms is done with simultaneous monitoring by underwater cameras located on the underwater robot. If the achieved position is correct, the movable arms B and C of the coupling will close completely around the flanges 35 on the pipeline 33. If this does not happen - the movable arms of the coupling will not completely close and block, so that no further connection procedure can be continued. Only when the two halves of the coupling, i.e. the movable arms B and C, are completely closed, Fig. 21., the cylinders 7 will block the position of the clutch on the flange connection with the bolts 8. After locking the position, the coupling is fixed in the closed position but still relatively free in the radial direction and is ready to be clamped.

Prilikom stezanja spojke, pomoću hidrauličnih pogona 27 na nosaču spojke D, oslonci 9 na kućištima miruju, a krakovi 13, vanjskih navojnih čahura 11, se podižu uzrokujući time pomak odnosno rotaciju vanjskih čahura u pomičnom kraku B i C, Sl. 22. Rotacijom vanjskih čahura 11 djeluje se izravno na pomak segmenata 15 unutarnjih navojnih čahura putem spiralnog navoja 12 koji se na njima nalazi. Naime, unutarnje i vanjske navojne čahure su izvedene kao vijak i matica. Segmenti 15 unutarnje navojne čahure se ponašaju kao vijak koji miruje, a koji se, uslijed rotacije vanjske čahure 11, kao matice, pomiče translatorno prema naprijed. Međutim, osim translatornog aksijalnog gibanja, segmenti unutarnjih čahura moraju postići ujedno i radijalni pomak prema prirubnicama 35. Dakle, dok vanjske navojne čahure 11 rotiraju oko osi spojke, segmenti 15 unutarnje navojne čahure, se pomiču translatorno istovremeno u dva smjera: radijalno - prema centru prirubnica i aksijalno – uzduž osi cijevi prema centru prirubničkog spoja G. Da bi se ovakvo gibanje postiglo, navoj na vanjskim čahurama odgovara navoju na unutarnjim čahurama. Međutim, navoj je konusni – čime se osim aksijalnog pomaka postiže i radijalni pomak. Budući da je navoj konusni, neminovno dolazi do stezanja unutarnje čahure prilikom aksijalnog pomaka. Da bi se omogućio takav pomak, unutarnja navojna čahura je razrezana na segmente 15 koji su povezani graničnim prstenom 18 da bi ostale u početnom položaju. Granični prsten 18 ima na sebi konusne klinove 19 koji segmente unutarnje čahure drži pritisnute uz vanjske čahure. Izvedba graničnog prstena je takva da je omogućen radijalni pomak segmenata čahura ali ne i rotacija. Granični prsteni 18 su vijcima fiksirani za bočne poklopce 21 kućišta 1. Prsteni 14 za vođenje vanjskih čahura su vijcima fiksirani za kućišta 1 i oni omogućava rotaciju vanjskih čahura. When tightening the clutch, by means of the hydraulic drives 27 on the clutch support D, the supports 9 on the housings are stationary, and the arms 13, of the outer threaded bushings 11, are raised, thereby causing the displacement or rotation of the outer bushings in the movable arm B and C, Fig. 22. The rotation of the outer bushings 11 directly affects the displacement of the segments 15 of the inner threaded bushings via the spiral thread 12 located on them. Namely, the inner and outer threaded bushings are designed as a screw and a nut. The segments 15 of the inner threaded sleeve behave like a stationary screw, which, due to the rotation of the outer sleeve 11, as a nut, moves translationally forward. However, in addition to the translational axial movement, the segments of the inner sleeves must also achieve a radial movement towards the flanges 35. Thus, while the outer threaded sleeves 11 rotate around the coupling axis, the segments 15 of the inner threaded sleeve move translationally simultaneously in two directions: radially - towards the center flange and axially – along the axis of the pipe towards the center of the flange connection G. In order to achieve this movement, the thread on the outer bushings corresponds to the thread on the inner bushings. However, the thread is conical - which, in addition to axial displacement, also achieves radial displacement. Since the thread is conical, it is inevitable that the inner sleeve will tighten during axial movement. To allow such a movement, the inner threaded sleeve is cut into segments 15 which are connected by a limit ring 18 to remain in the initial position. The boundary ring 18 has on it conical wedges 19 which keep the segments of the inner sleeve pressed against the outer sleeves. The performance of the boundary ring is such that the radial displacement of the bushing segments is enabled, but not rotation. Boundary rings 18 are fixed with screws to the side covers 21 of the casing 1. Rings 14 for guiding the outer sleeves are fixed with screws to the casing 1 and they enable the rotation of the outer sleeves.

Segmenti 15 unutarnjih navojnih čahura, Sl. 15., imaju na donjoj strani sitne uzdužne zube 16 koji se zariju u tijela prirubnica 35 te nakon što se ostvari potrebna sila zagrizanja, dolazi do translatornog pomicanja prirubnica u aksijalnom smjeru jedne prema drugoj. Dakle, uz pomoć aksijalnog i radijalnog pomaka segmenata 15 unutarnje navojne čahure, dolazi do zagrizanja zubi segmenta unutarnje čahure na obodu prirubnica. Budući da ja sada radijalni pomak segmenata onemogućen daljnjim aksijalnim pomakom, doći će do blage deformacije segmenta, ali budući da je upotreba spojke jednokratna, to ne smeta, čak je korisno, jer se ostvaruje prisniji spoj unutarnje čahure i prirubnica. Nakon što se ostvari potrebno stezanje prirubnica 35, vijak na čahurama je samokočiv te nije potrebno dodatno osigurati odvijanje. Spojka A preuzima silu pritezanja prirubnica 35 sa svornih vijaka 36 i matica 37 na sebe, tako da vijci postaju beskorisni. Kada se spojka postavi, više se ne skida – ona ostaje trajno na mjestu saniranog prirubničkog spoja, Sl.30. Segments 15 of internal threaded bushings, Fig. 15., have on the lower side small longitudinal teeth 16 that dig into the bodies of the flanges 35 and after the necessary biting force is achieved, translational movement of the flanges in the axial direction towards each other occurs. Thus, with the help of the axial and radial displacement of the segments 15 of the inner threaded sleeve, the teeth of the segment of the inner sleeve bite on the rim of the flanges. Since the radial displacement of the segments is now prevented by further axial displacement, there will be a slight deformation of the segment, but since the use of the clutch is one-time, this does not bother, it is even useful, because a closer connection of the inner sleeve and flanges is achieved. After the necessary tightening of the flanges 35 is achieved, the screw on the bushings is self-locking, and it is not necessary to additionally ensure that it is unscrewed. Coupling A takes the force of tightening the flanges 35 from the stud bolts 36 and nuts 37 onto itself, so that the bolts become useless. Once the coupling is installed, it is no longer removed - it remains permanently in place of the repaired flange connection, Fig. 30.

Nakon toga se nosač spojke D automatski hidrauličnom komandom odvaja od spojke A koja ostaje na prirubničkom spoju G trajno, a nosač spojke dizalica podiže na površinu za montažu sljedeće spojke. After that, the clutch carrier D is automatically hydraulically separated from the clutch A, which remains on the flange connection G permanently, and the clutch carrier is lifted by the crane to the mounting surface of the next clutch.

KRATKI OPIS SLOVNIH I BROJČANIH REFERENTNIH OZNAKA BRIEF DESCRIPTION OF LETTER AND NUMERICAL REFERENCE MARKS

A – spojka A – clutch

D – nosač spojke D – clutch support

G – prirubnički spoj na podvodnom cjevovodu G – flange connection on the underwater pipeline

Popis oznaka na spojki A List of markings on clutch A

B – pomični krak spojke s donjim hidrauličnim cilindrom za spajanje pomičnih krakova B – movable arm of the clutch with the lower hydraulic cylinder for connecting the movable arms

C – pomični krak spojke s gornjim hidrauličnim cilindrom za spajanje pomičnih krakova C – movable arm of the clutch with the upper hydraulic cylinder for connecting the movable arms

1 – kućište pomičnih krakova 1 – housing of movable arms

2 – gornje uške na pomičnom kraku B 2 – upper lugs on movable arm B

3 – donje uške na pomičnom kraku B 3 – lower lugs on movable arm B

4 – gornje uške na pomičnom kraku C 4 – upper lugs on the movable arm C

5 – donje uške na pomičnom kraku C 5 – lower lugs on movable arm C

6 – osovina kroz gornje uške za spajanje pomičnih krakova B i C 6 – shaft through the upper lugs for connecting movable arms B and C

7 – cilindri za aksijalno blokiranje pomičnih krakova B i C 7 – cylinders for axial blocking of movable arms B and C

8 – svornjaci za blokiranje pomičnih krakova B i C 8 – bolts for blocking the movable arms B and C

9 – oslonci za kućišta cilindara za radijalno i aksijalno stezanje pomičnih krakova B i C 9 – supports for cylinder housings for radial and axial clamping of movable arms B and C

10 – hidraulični pogon za radijalno otvaranje i zatvaranje pomičnih krakova B i C 10 – hydraulic drive for radial opening and closing of movable arms B and C

11 – vanjske navojne čahure u pomičnim krakovima B i C 11 – external threaded bushings in movable arms B and C

12 – zakrivljena navojna ploha vanjske navojne čahure 12 – curved threaded surface of the outer threaded sleeve

13 – krakovi vanjskih navojnih čahura za klipnjače hidrauličnih pogona za stezanje pomičnih krakova B i C 13 – arms of external threaded bushings for piston rods of hydraulic drives for clamping movable arms B and C

14 – vodeći prsten u pomičnim krakovima B i C za vanjske navojne čahure 14 – guide ring in movable arms B and C for external threaded bushings

15 – segmenti unutarnje navojne čahure 15 – segments of the internal threaded sleeve

16 – zubi na segmentu unutarnje navojne čahure 16 – teeth on the inner threaded sleeve segment

17 – konusni utori za konusne klinove 17 – conical slots for conical pins

18 – granični prsteni s klinovima u pomičnim krakovima B i C 18 – boundary rings with pins in movable arms B and C

19 – konusni klinovi na graničnim prstenima 19 – conical wedges on boundary rings

20 – prsteni unutarnjih navojnih čahura u pomičnim krakovima B i C 20 – rings of internal threaded bushings in movable arms B and C

21 – bočni poklopci – na pomičnim krakovima B i C 21 – side covers – on movable arms B and C

22 – cink protektori na pomičnim krakovima B i C 22 – zinc protectors on movable arms B and C

23 – svornjak za spajanje s nosačem spojke 23 – bolt for connection with the clutch support

Popis oznaka na nosaču spojke D List of markings on the clutch support D

E – fiksni krak s upravljačkom pločom E – fixed arm with control panel

F – fiksni krak F – fixed arm

24 – upravljačka ploča 24 – control panel

25 – hidraulični priključci 25 – hydraulic connections

26 – indikatori položaja uređaja 26 – device position indicators

27 – hidraulični pogoni za radijalno i aksijalno stezanje pomičnih krakova B i C spojke 27 – hydraulic drives for radial and axial clamping of movable arms B and C clutch

28 – klipnjače 28 – connecting rods

29 – pomoćni cilindri položaja 29 – auxiliary position cylinders

30 – ručke za manipulaciju 30 – handles for manipulation

31 – kopča za spojku 31 – clutch clip

32 – sajla za spuštanje uređaja 32 – cable for lowering the device

Popis oznaka na prirubničkom spoju podvodnog cjevovoda G List of markings on the flange joint of the underwater pipeline G

33 – podvodni cjevovod pod tlakom 33 – underwater pipeline under pressure

34 – završetak fleksibilnih cijevi 34 – termination of flexible pipes

35 – prirubnice 35 – flanges

36 – svorni vijci na prirubnicama 36 – stud bolts on flanges

37 – matice svornih vijaka 37 – stud bolts nuts

38 – brtva između prirubnica. 38 – seal between flanges.

Primjena izuma Application of the invention

Primjena izuma je jasna iz samog opisa. The application of the invention is clear from the description itself.

Opisane spojke se mogu koristiti na svim cjevovodima pod tlakom bez obzira za koji se medij cjevovod koristi. The described couplings can be used on all pipelines under pressure, regardless of the medium for which the pipeline is used.

Za izradu dijelova i sklopova spojke koriste se uobičajeni materijali od metala. Na spojkama se postavljaju cink protektori u svrhu eliminiranja štetnog djelovanja galvanskih struja. Common metal materials are used for the production of clutch parts and assemblies. Zinc protectors are placed on the couplings in order to eliminate the harmful effects of galvanic currents.

Claims (10)

1. Hidraulični uređaj za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom, naznačen time, da hidraulični uređaj obuhvaća spojku (A) i nosač spojke (D); da hidraulični uređaj omogućava saniranje oštećenog prirubničkog spoja (G) na podvodnim cjevovodima pod tlakom bez obzira na vrstu medija koji kroz cjevovod prolazi; da spojka (A) obuhvaća pomični krak (B) i pomični krak (C), da su pomični krakovi (B i C) spojke (A) spojeni preko zajedničke osovine (6) oko koje rotiraju, da osovina (6) prolazi kroz gornju ušku (2) na pomičnom kraku (B) i kroz gornju ušku (4) na pomičnom kraku (C); da je na spojku (A) ugrađen hidraulični pogon (10) za radijalno otvaranje i zatvaranje pomičnih krakova (B i C); da su na uškama pomičnih krakova (B i C) ugrađeni hidraulični cilindri (7) za aksijalno blokiranje pomičnih krakova (B i C) u zatvorenom položaju; da su na kućištima (1) pomičnih krakova (B i C) učvršćeni oslonci (9) na koje se naslanjaju hidraulični pogoni (27) sa nosača spojke D; da su u pomičnim krakovima (B i C) ugrađene vanjske navojne čahure (11) s vodećim prstenima (14) i vanjskim krakovima (13); da su u pomičnim krakovima (B i C) ugrađene unutarnje navojne čahure od segmenata (15) s graničnim prstenima (18); da se kod radijalnog i aksijalnog zatvaranja pomičnih krakova (B i C) oko oštećenog prirubničkog spoja (G), segmenti (15) zariju u prirubnice (35) i tako ostvare čvrsti spoj prirubnica koji sprječava istjecanje medija pod tlakom iz cjevovoda (33); da nosač spojke (D) obuhvaća fiksni krak (E) i fiksni krak (F); da je na fiksnom kraku (E) montirana upravljačka ploča (24) s hidrauličnim priključcima (25) i indikatorima položaja uređaja (26); da su na fiksnim krakovima (E i F) ugrađeni hidraulični pogoni (27) za radijalno i aksijalno stezanje pomičnih krakova (B i C) spojke (A); da su na fiksnim krakovima (E i F) ugrađeni i pomoćni cilindri položaja (29) za odvajanje klipnjača (28) hidrauličnih pogona (27) od vanjskih krakova (13) vanjske navojne čahure spojke (A) nakon zatvaranja i pritezanja pomičnih krakova (B i C).1. A hydraulic device for repairing damage to the flange connection of an underwater pipeline under pressure, characterized in that the hydraulic device includes a coupling (A) and a coupling support (D); that the hydraulic device enables the repair of the damaged flange joint (G) on underwater pipelines under pressure, regardless of the type of medium that passes through the pipeline; that the coupling (A) includes a movable arm (B) and a movable arm (C), that the movable arms (B and C) of the coupling (A) are connected via a common shaft (6) around which they rotate, that the shaft (6) passes through the upper eye (2) on the movable arm (B) and through the upper eye (4) on the movable arm (C); that the hydraulic drive (10) for the radial opening and closing of the movable arms (B and C) is installed on the coupling (A); that hydraulic cylinders (7) are installed on the lugs of the movable arms (B and C) for axial blocking of the movable arms (B and C) in the closed position; that the housings (1) of the movable arms (B and C) have fixed supports (9) on which the hydraulic drives (27) from the clutch support D rest; that the movable arms (B and C) are fitted with external threaded bushings (11) with guide rings (14) and external arms (13); that the movable arms (B and C) are fitted with internal threaded bushings of segments (15) with limit rings (18); that when the movable arms (B and C) are radially and axially closed around the damaged flange connection (G), the segments (15) sink into the flanges (35) and thus achieve a solid connection of the flanges that prevents the outflow of pressurized media from the pipeline (33); that the clutch support (D) includes a fixed arm (E) and a fixed arm (F); that a control panel (24) with hydraulic connections (25) and device position indicators (26) is mounted on the fixed arm (E); that hydraulic drives (27) are installed on the fixed arms (E and F) for radial and axial clamping of the movable arms (B and C) of the coupling (A); that the auxiliary position cylinders (29) are installed on the fixed arms (E and F) to separate the piston rods (28) of the hydraulic drives (27) from the outer arms (13) of the external threaded sleeve of the clutch (A) after closing and tightening the movable arms (B) and C). 2. Hidraulični uređaj, prema zahtjevu 1., naznačen time, da vanjske navojne čahure (11) spojke (A) imaju zakrivljene navojne plohe (12) koje djeluju kao matice koje rotiraju oko osi spojke.2. Hydraulic device, according to claim 1, characterized in that the external threaded bushings (11) of the clutch (A) have curved threaded surfaces (12) that act as nuts that rotate around the clutch axis. 3. Hidraulični uređaj, prema zahtjevima 1. i 2., naznačen time, da se na vanjske krakove (13) vanjskih navojnih čahura (11) zakače klipnjače (28) hidrauličnih pogona (27) prilikom radijalnog i aksijalnog pritezanja pomičnih krakova (B i C) spojke (A) oko oštećenog prirubničkog spoja (G). 3. Hydraulic device, according to requirements 1 and 2, characterized by the fact that piston rods (28) of hydraulic drives (27) are attached to the outer arms (13) of the outer threaded bushings (11) during the radial and axial tightening of the movable arms (B and C) coupling (A) around the damaged flange joint (G). 4. Hidraulični uređaj, prema zahtjevima 1., 2. i 3., naznačen time, da vodeći prsteni (14) spojke (A) omogućavaju rotaciju vanjskih navojnih čahura (11). 4. Hydraulic device, according to claims 1, 2 and 3, characterized in that the guide rings (14) of the clutch (A) enable the rotation of the outer threaded bushings (11). 5. Hidraulični uređaj, prema zahtjevu 1., naznačen time, da segmenti (15) unutarnje navojne čahure spojke (A) imaju konusne utore (17) i zube (16).5. Hydraulic device, according to claim 1, characterized in that the segments (15) of the inner threaded sleeve of the clutch (A) have conical grooves (17) and teeth (16). 6. Hidraulični uređaj, prema zahtjevima 1. i 5., naznačen time, da segmenti (15) unutarnje navojne čahure spojke (A), s kojima je vanjska čahura (11) u zahvatu, djeluju kao vijak koji miruje, a ne okreće se. 6. Hydraulic device, according to claims 1 and 5, characterized by the fact that the segments (15) of the inner threaded sleeve of the clutch (A), with which the outer sleeve (11) engages, act as a screw that is stationary and does not rotate . 7. Hidraulični uređaj, prema zahtjevima 1., 5. i 6., naznačen time, da granični prsteni (18) imaju konusne klinove (19); da su konusni klinovi uvučeni u konusne utore (17) na segmentima (15), i na taj način, kod rotiranja vanjske čahure (11), kao matice, segmenti (15), kao vijci, ne rotiraju već se samo aksijalno i radijalno pomiču pri čemu se zubi (16) segmenata (15) zariju u prirubnice (35).7. Hydraulic device, according to claims 1, 5 and 6, characterized in that the boundary rings (18) have conical wedges (19); that the conical wedges are inserted into the conical grooves (17) on the segments (15), and in this way, when rotating the outer sleeve (11), as a nut, the segments (15), as screws, do not rotate but only move axially and radially whereby the teeth (16) of the segments (15) sink into the flanges (35). 8. Hidraulični uređaj, prema zahtjevu 1., naznačen time, da se na hidraulične priključke (25) upravljačke ploče (24) nosača spojke (D) priključuje podvodni robot s kamerama za nadgledanje i upravljanje hidrauličnim uređajem za saniranje oštećenja prirubničkog spoja podvodnog cjevovoda pod tlakom. 8. Hydraulic device, according to claim 1, characterized in that an underwater robot with cameras for monitoring and controlling the hydraulic device for repairing damage to the flange connection of the underwater pipeline is connected to the hydraulic connections (25) of the control panel (24) of the clutch support (D). pressure. 9. Hidraulični uređaj, prema zahtjevima 1. i 8., naznačen time, da se nosač spojke (D), nakon saniranja oštećenog prirubničkog spoja (G), automatski odvaja od spojke (A) i podiže na površinu za drugu istu operaciju.9. Hydraulic device, according to claims 1 and 8, characterized by the fact that the coupling carrier (D), after repairing the damaged flange connection (G), is automatically separated from the coupling (A) and raised to the surface for another same operation. 10. Hidraulični uređaj, prema prethodnim zahtjevima, naznačen time, da nakon saniranja oštećenog prirubničkog spoja na podvodnom cjevovodu pod tlakom (G), spojka (A) ostaje trajno na saniranom prirubničkom spoju.10. Hydraulic device, according to the previous requirements, characterized in that after repairing the damaged flange joint on the underwater pipeline under pressure (G), the coupling (A) remains permanently on the repaired flange joint.