WO1999043541A1 - Procede de protection pour pompe submersible de ballast et dispositif a l'interieur d'une pompe submersible de ballast - Google Patents

Procede de protection pour pompe submersible de ballast et dispositif a l'interieur d'une pompe submersible de ballast Download PDF

Info

Publication number
WO1999043541A1
WO1999043541A1 PCT/NO1999/000066 NO9900066W WO9943541A1 WO 1999043541 A1 WO1999043541 A1 WO 1999043541A1 NO 9900066 W NO9900066 W NO 9900066W WO 9943541 A1 WO9943541 A1 WO 9943541A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
ballast
riser pipe
air
drive shaft
Prior art date
Application number
PCT/NO1999/000066
Other languages
English (en)
Norwegian (no)
Inventor
Truls H. Paulsen
Original Assignee
Hamworthy Kse As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hamworthy Kse As filed Critical Hamworthy Kse As
Priority to AU32791/99A priority Critical patent/AU3279199A/en
Publication of WO1999043541A1 publication Critical patent/WO1999043541A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine

Definitions

  • the invention relates to a method for protection of a submersible ballast pump of the type comprising a pump head, a riser pipe projecting upwards therefrom having a pump drive shaft, and a top piece with a motor, arranged in conjunction with the pump drive shaft, against freezing when not in operation.
  • the invention also relates to a submersible ballast pump apparatus of the type comprising a pump head, a riser pipe projecting upwards therefrom having a pump drive shaft, and a top piece with a motor, arranged in conjunction with the pump drive shaft.
  • the invention has evolved particularly in connection with commercial tank ship operation in Arctic regions, currently an area of potential that shipbuilding yards and shipping companies in the northern regions have been making concrete efforts to develop.
  • ballast pumps of the type comprising a pump head in the ballast tank, a top piece with a motor arranged on deck, and a riser pipe with a pump drive shaft disposed between the top piece/motor and the pump head
  • Ballast pumps operate using sea water, and during periods of inactivity these pumps will be vulnerable to freezing due to the fact that they are located in chambers having a temperature below the freezing point, and the water remains in the pumps can freeze up.
  • Vertical submersible pumps of the type dealt with here are often of a structural height equal to the height of the tank (18-20 m) and have product-lubricated — i.e, water lubricated — bearings.
  • the pumps are constructed to be self-draining when not in operation, the formation of water film in the narrow clearances within the pump head and in the bearings is unavoidable. If these water films should freeze into ice, tests and calculations have shown that substantial forces will be necessary to free the pump rotor, and this means that the operation of the ballast pump will be impeded.
  • One possible solution is, of course, to bring the inner components of the pump up to a temperature that prevents them from freezing solid.
  • the purpose of the present invention is to make it possible to prevent this type of freezing in a simple and reliable manner, while complying with safety requirements.
  • the inventive concept is based on the utilization of air or another suitable gas to bring the inner components of the pump up to a temperature that will prevent them from freezing solid.
  • Air is a medium that is safe, it penetrates into narrow openings everywhere, and it is inexpensive for the construction of such a system.
  • a method for the protection of a submersible ballast tank as mentioned in the introduction which method is characterized in that air is caused to circulate in a circulation cycle that includes the riser pipe.
  • the forced air circulation is distinguished by the feature that the circulation air will penetrate everywhere in narrow clearances and bearings and prevent them from freezing, or alternatively it will thaw out any ice that has frozen onto the pump components.
  • the air circulation is forced, meaning that the air is constantly being supplied with energy from an exterior source, which contributes to the warming of the circulation air.
  • the invention also relates to a submersible ballast pump apparatus as introduced above, which apparatus is characterized in that the submersible ballast pump riser pipe is coupled into a forced circulation cycle for air.
  • an especially practical and simple embodiment form of an apparatus according to the invention is one where the circulation cycle comprises a fan for circulating the air in the circulation cycle.
  • the effect of the fan will transfer into heat, and the circulation air will therefore theoretically become hotter and hotter.
  • the temperature of the air will be determined by the effect of the fan, the operating time, and the leakage of heat to the surroundings.
  • the invention provides for a favorable combination of air circulation and utilization of the heat that is stored in the air due to the effect of the fan. This permits almost the simplest possible structural design for the heating system for the pump. An explosion- proof embodiment is obtained in a simple manner by the utilization of a standard explosion-proof fan motor.
  • the circulation system optionally may have built-in auxiliary heat provided through electrical heating or through heat exchange using steam or hot water.
  • FIGS 1, 2 and 3 show a transverse sectional view of typical ballast tanks under various loading conditions
  • Figure 4 is a transverse sectional view of a tank arrangement
  • Figure 5 is a view of a so-called multi-suction arrangement, i.e., an arrangement wherein a pump provides suction from a plurality of ballast tanks,
  • Figure 6 is a strictly schematic illustration of a possible system according to the invention.
  • FIG. 7 is a strictly schematic illustration of yet another possible system in accordance with the invention.
  • Figure 1 is a transverse sectional view of a tank ship 1 having a cargo hold 2 and a ballast tank 3.
  • cargo hold 2 is fully loaded and ballast tank 3 is empty.
  • a submersible ballast pump 4 Inside the ballast tank is provided a submersible ballast pump 4.
  • This pump comprises primarily a pump head 5, a top piece 6 with a motor, and a riser pipe 7 having a drive shaft (not shown) running between the motor (also not shown) and the pump head.
  • the pump head is disposed in an inlet tank 8.
  • Figure 3 shows the situation where the cargo tank is empty and ballast pumping is in effect. The significant point of these Figures 1-3 is that they show various operative conditions wherein freezing in pump 4 could occur.
  • FIG 4 is a side view of a tank ship having ballast tanks 2.
  • Figure 5 is a sectional illustration of how a ballast pump 4 can serve a plurality of ballast tanks 2', 2", 2'", where the inlet tank 8 is coupled to adjacent tanks 2", 2'" with the aid of pipes 9, 10.
  • FIG. 6 is a strictly schematic illustration of how the invention can be realized.
  • the submersible ballast pump 4 having a top piece 6 mounted on deck, a riser pipe 7 in the ballast tank 2, and a pump head 5 in an inlet tank 8.
  • the ballast water surface in ballast tank 2 is indicated here by line 1 1.
  • ballast pump 4 is more or less empty of water, and pump 4 is at a standstill.
  • branch lines 12 and 13 are joined to a fan unit 14 with the aid of a pipe 15.
  • Branch line 13 may, for example, be taken directly from riser pipe 7 or from inlet tank 8, which is in communication with the riser pipe.
  • valves 16, 17 in the air circulation system are designed as valves for water pressure, as they will be a part of the entire ballast system and will be subjected to full pump pressure when ballast pumping takes place. Fan 14 and circulation pipe 15 will be used only when ballast tank 2 is empty or nearly empty and the water system consequently is almost devoid of pressure.
  • FIG. 7 shows a modified system according to the invention.
  • the general construction is the same as in Figure 5, except that here more branch lines 21 have been inserted between riser pipe 7 and circulation pipe 15. These branch lines or interconnecting pipes 21 are evenly spaced so that air is permitted to circulate into riser pipe 7 at the places where the water surface does not block the supply of air.
  • the motor bearings and the pump's journal bearings situated in the deck-mounted top piece 6 are oil-lubricated and need not be included in the tempering system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

En vue de la protection contre le gel d'une pompe submersible (4) de ballast inactive du type comprenant: une tête (5) de pompe; une conduite montante (7) s'élevant vers le haut à partir de la tête de pompe, laquelle conduite comporte un arbre d'entraînement de la pompe; et une pièce supérieure (6) pourvue d'un moteur, disposée conjointement à l'arbre d'entraînement de la pompe, on fait circuler de l'air dans un cycle (12, 14, 15, 13) de circulation comprenant la conduite montante (7).
PCT/NO1999/000066 1998-02-26 1999-02-26 Procede de protection pour pompe submersible de ballast et dispositif a l'interieur d'une pompe submersible de ballast WO1999043541A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32791/99A AU3279199A (en) 1998-02-26 1999-02-26 Method for protection of a ballast submersible pump and device in a ballast submersible pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19980805 1998-02-26
NO980805A NO980805A (no) 1998-02-26 1998-02-26 Fremgangsmåte for beskyttelse av en ballast-dykkpumpe og anordning ved ballast-dykkpumpe

Publications (1)

Publication Number Publication Date
WO1999043541A1 true WO1999043541A1 (fr) 1999-09-02

Family

ID=19901720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1999/000066 WO1999043541A1 (fr) 1998-02-26 1999-02-26 Procede de protection pour pompe submersible de ballast et dispositif a l'interieur d'une pompe submersible de ballast

Country Status (3)

Country Link
AU (1) AU3279199A (fr)
NO (1) NO980805A (fr)
WO (1) WO1999043541A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013192000A2 (fr) * 2012-06-18 2013-12-27 The Government Of The Usa Of America As Represented By The Secretary Of The Dept. Of The Interior Procédés de mélange à buses pour des réservoirs de ballast de navire
RU2798922C1 (ru) * 2023-02-21 2023-06-28 Федеральное государственное казенное образовательное учреждение высшего образования "Московский пограничный институт Федеральной службы безопасности Российской Федерации" Водооткачивающая система плавающего колесного транспортного средства

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. 90-266933/55, week 9055; & SU 1523466 A (OZHIGANOV O A) 23 December 1987. *
PATENT ABSTRACTS OF JAPAN, Vol. 10, No. 81, (M-465); & JP 60222389 A (ISHIKAWAJIMA HARIMA JUKOGYO K.K.) 6 November 1985. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013192000A2 (fr) * 2012-06-18 2013-12-27 The Government Of The Usa Of America As Represented By The Secretary Of The Dept. Of The Interior Procédés de mélange à buses pour des réservoirs de ballast de navire
WO2013192000A3 (fr) * 2012-06-18 2014-02-27 The Government Of The Usa Of America As Represented By The Secretary Of The Dept. Of The Interior Procédés de mélange à buses pour des réservoirs de ballast de navire
US9688551B2 (en) 2012-06-18 2017-06-27 The United States Of America As Represented By The Secretary Of The Interior Nozzle mixing apparatus and methods for treating water in ship ballast tanks
RU2798922C1 (ru) * 2023-02-21 2023-06-28 Федеральное государственное казенное образовательное учреждение высшего образования "Московский пограничный институт Федеральной службы безопасности Российской Федерации" Водооткачивающая система плавающего колесного транспортного средства

Also Published As

Publication number Publication date
NO305112B1 (no) 1999-04-06
AU3279199A (en) 1999-09-15
NO980805D0 (no) 1998-02-26
NO980805A (no) 1999-04-06

Similar Documents

Publication Publication Date Title
RU2410572C2 (ru) Компрессорный блок
JP5755301B2 (ja) Ｌｎｇ燃料供給システム
US9386729B2 (en) Energy conversion device, in particular for underwater compression and pumping station, with improved cooling means
JP2006168711A (ja) 熱電力ユニットおよび液体状態で貯蔵される天然ガスを使用するエネルギーシステム
RU2670994C2 (ru) Роторная машина и способ теплообмена в роторной машине
JP2004532159A (ja) 船の推進のための構成および推進方法
KR101739451B1 (ko) 극저온 지역에서의 해양부유물의 밸러스트탱크 동파 방지 시스템 및 방법
WO1999043541A1 (fr) Procede de protection pour pompe submersible de ballast et dispositif a l'interieur d'une pompe submersible de ballast
CN111183271B (zh) 膨胀涡轮
US5642987A (en) Pump motor assembly for a two-phase fluid
US20120275864A1 (en) Self contained underwater rapid freeze system for oil and fuel piping
RU2186228C2 (ru) Устройство для повышения эксплуатационной экономичности тепловой машины
US7819205B2 (en) Apparatus for the cooling of drilling liquids
US3666375A (en) Pumping a high or low temperature fluid
CN110661379B (zh) 一种湿式电机的冷却散热装置
CN109494935A (zh) 船舶推进装置的冷却系统和船舶推进装置
JPH11324967A (ja) 立軸ポンプ
RU2739089C1 (ru) Судовой двигатель
CN107399418B (zh) 用于水上载具的推进单元
CN217374876U (zh) 一种用于电机推进的单循环海水冷却系统
CN221220831U (zh) 一种可空载直连屏蔽泵
US4598219A (en) Submersible motor
HU181035B (en) Cooling system for engines of self-propelled floating crane
FI122804B (fi) Järjestely aluksen moottorin kehittämän hukkalämmön talteenottamiseksi
US3307490A (en) Device in hydraulically driven engines

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase