UA107006U - Ship system for monitoring for preventing the coanda effect - Google Patents

Abstract

Ship system for monitoring the state of screw-steering assemblage for preventing the Coanda effect. Additionally, the system contains piezoelectric transducers which are located at the site of attachment of a steering propeller-hull installation, the transducer block and a microcontroller with the issuance of information on RS-485 interface.

Description

The utility model belongs to the Coand Effect Thruster Position Monitoring Systems (THMS) installed on large yachts and passenger ships, mixed (river-sea) navigation vessels, tugboats, salvage vessels, floating drilling platforms and research vessels , icebreakers and warships of the coastal zone (1-4).

The currently known system consists of a mechanical countermeasure to the Coand effect due to the tilting of the baler of the entire structure at the stage of construction of the GKU to give the direction of the water flow at an angle of |51І from the bottom of the vessel.

Disadvantages of the system are manifested in the following: - complication of the GCU design; - a decrease in the overall efficiency of the structure due to the direction of the water flow not parallel to the bottom of the vessel; - the direction of the water flow at an angle to the side from the bottom of the vessel does not completely eliminate the occurrence of the Coand effect, but only postpones the moment of its occurrence at a higher speed; - that when the GCU works in the reverse mode, the water flow is already directed to the bottom of the vessel, which causes favorable conditions for the occurrence of the Coand effect and, in turn, leads to the loss of controllability of the vessel; - it is necessary to calculate the tilt of the baler at the design stage and there is no possibility to make changes to the already working GCU under other working conditions.

The closest in terms of technical essence and the result achieved to the proposed useful model is the "Ship monitoring system for the prevention of the Coand effect" |б6|, which contains piezo sensors located along the circumference of the shaft deadwood bearing

GCU

Disadvantages of the system, which are due to the use of the "Ship monitoring system for the prevention of the Coand effect", are the complexity of integrating piezoelectric sensors to register the deviation of the shaft line in the deadwood bearing of the GCU, which should be carried out at the stage of design and construction.

The task of the useful model is to create a system for monitoring the occurrence of the Coand effect to further minimize the increased wear of deadwood, thrust and support bearings of the GCU.

The set task is solved by the fact that the ship's system of monitoring the condition of the propeller

The steering system to prevent the Koanda effect, according to the useful model, additionally contains piezo sensors, which are located at the place of attachment of the propeller steering system to the ship's hull, a converter unit and a microcontroller with output of information via the H5-485 interface.

The technical effect is achieved due to the fact that the Coand effect consists in the fact that the jet of water passing through the ship's propeller tends to deviate towards the bottom and under certain conditions "sticks" to it. In the process of this deviation, a force in the direction of the effect begins to act on the screw with the shaft guide. As a result, firstly, the shaft, in turn, affects the deadwood, thrust and support bearings, which leads to uneven wear of the latter.

Secondly, as a result of the manifestation of the Coand effect, there are difficulties with maintaining the ship's position. In connection with the constructive feature of locating the entire GCU below the waterline under the bottom of the vessel, the approach to diagnosis, scheduled maintenance and repair is complicated. The obtained data (7-10) make it possible to place piezo sensors at the points of greatest stress for further registration of the Coand effect.

In fig. 1 shows the GKU, side view; in fig. 2 - GKU, top view, which is mounted on the vessel, and the direction of the water flow when the Coand effect occurs.

The system includes: 1 - city of mounting of the GKU column; 2 - ship hull; C - column of GKU; 4 - direction of water flow.

When the Coand effect occurs, the GKU column Z under the action of the water flow 4 bends upwards towards the ship's hull 2, which causes the deformation of the GKU nodes, as a result of which uneven wear of the deadwood, thrust and support bearings of the GKU appears.

In fig. In the section along A-A, one of the piezo sensors mounted in the place of attachment is shown

GKU to the ship's hull.

The system includes: 1 - fastening of the GKU column; 2 - ship hull; 5 - a bolt that connects the GKU to the ship's hull; 6 - nut; 7 - puck; 8, 10 - spacers made of insulating material; 9 - piezo sensor; 11, 12 - positive and negative contacts of the piezo sensor; BP - block of converters; MK - microcontroller; H5-485 - the interface of industrial ENegpei.

The work consists of two stages: - in a state of rest, in the absence of the Coand effect, the voltage on all piezo sensors is the same and equal to zero; - in working condition, when the Coand effect occurs, the GCU column in the attachment point 1 experiences transverse oscillations and begins to affect the bolt 5, which tightens the GCU column with the ship's hull 2.

Under the action of this force, the piezo sensor 9, which is located between them, is deformed, turning the mechanical deformation into an electrical signal on contacts 11 and 12. The spacers 8 and 10 of insulating material also serve as a damping layer that protects the piezo sensor from destruction. The received electrical signal is sent via the data bus through the unit of BP converters to the MK microcontroller and further to the industrial network of EiPegpei.

The elements of the useful model can be implemented according to known schemes: - piezoresistive sensors (RAB) of the company Rpuzik Ipzigitepie (11) or piezo sensors of the company "Aurora-ELMA" made of piezoceramic materials based on lead zirconate-titanate (system

TsTe) P21I; - converter block (BP) - measuring converters of voltage signals from Rioepikh

Sopiasi МСА-МАС-Ш1-0О-00-2811103 (131; - microcontroller (MK) from Rpoepikh Sopiasi II C 1хх-3хх series (141; - interface H5-485 - functional modules of terminals Ipiipe from Rpoepih Sopiasi IV I 85 485/ 422- 2MVO-RAS-2862097 (151.

Sources of information: 1. Sopiga-goiayypud Agiroy rgoryiviop zeiesied Tog darapeze iavi Tepivv // Tpe Mamai Agspiiesi,

Uipe 2003, p. 6. 2. Nidpiu tapoeimtabiye SAR A?iroa zoiiishiop og bid roh5Pirz // MEN, Osi. 2001, pp. 43-44.

Z. Kiito V., Roivyuz5Ppiu A.M., ZuiKkip E.M. Agiroyd rgoryiviop Tog razzepodeg sgyizeg5 // MAM 8

H5MU Ipiegaiyyopai! Sopiegepse, bogtepio, 18-21 Magsp 1997. 4. IV Roipei!vivip, hymeg isergeaKeg myy Agiroa rgoryiviop Tog Ov5ieiteispizzpe OopaiktaimeKe AS // ZPPir 5 Voai, dipe 1995. 5. Predstavlenie pochuteley Airoi series MI (Electronic resource). "«- pOru/Lymlyo5.arr.sot/dioba//vsoi/5so1293.p5/mepiuaizriau/90veroО0016546300si 2577e5004191aa/FPe/agirod miigo|esi diide hy.rai. b. Pat. 100819 Ukraine, MPK STI 9/08, 5 /12, 1/16. Ship monitoring system for the prevention of the Koanda effect / VV Budashko, VV Nikolskyi, SG Khnyunin - ME 201501854; application 03/02/2015; published 08/10/2015, Byul Mo 15. 7. Nikolsky V.V., Budashko V.V., Khnyunin S.G., Raenko N.E. Monitoring system for the positioning of semi-submersible floating drilling rigs // Ship deenergizing installations: scientific and technical coll. 2015. - Mo 35. - Odesa: ONMA. - pp. 137-141. 8. Budashko V.V., Nikolsky V.V., Khnyunin S.G., Nakul Yu.A. The system for monitoring the state of the propeller steering column for warning of Koanda's effect // Automation of judicial technical means: scientific and technical conference - 2015. - Vol. 21. - Odessa: ONMA - pp. 22-28. 9. Mikoi5Kui M., VidazyKo U., Kipishpip 5. Te topiyogipud zubziet oi She Soapaa eyesi og She

Tepviop-Ied rianopt'5 // Te 121p Ipiegaiiop! Sopiegtepse op Epdipe Koot 5itshayugv: Rgoseeeaipa. -

Come on! Thespian! Opimegviiu, Ietapri!, 19-20 Mometrbet", 2015. - R. 45-48. 10. VydavnKo M.M., MikkoizKui M.M., OpizisnepKko O.A., Knypishpip 5.N. Rnuzisa! todeiypo enesiv dedgadayop Bu ipiegasiyup agitiita! to him m/y pi / Te 121y Ipiegpaiopa! Sopiegepse op Epdipe

Voot 5itiiayogv5: Rgoseedipd. - Ivyetapri! TesNpisa! Opimegeiu, Itapriya, 19-20 Mometrbetg, 2015. - R. 49-52. 11. RNnuzik Ipvigitepie. Te Vidyi Rozyop bZepzog Tesppoiodu. Mapotei!eg-Rgesiviop teazigetepi Tesppoiodou IElectronic resource, pEruLlimly.rpuzikipzigitepie.sot/dompiosaa/TESO5 bVaiaznevy I 11025. rai. 12. "Aurora-ZLMA" company. Catalog of standard sizes of piezoelements (Electronic resources, - NNr/Lymly.amgoga-eita.gy/daia/riego saia!oa.rai. 13. List of Rypoepih Sopiasi products: AC and DC voltage converters

Electronic resource. - pOrzi. MLimlu. rpoepihsopiasi.sot /opiipe/ropatsa?ygi-rho-os-

Metaesaiy ria-2811103851yirgagu-tsashkatar-1. 14. Brief catalog of productions of Riopeich Sopiasi 2014. Controller. - P. 165 (Electronic resource

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Claims (1)

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