KR20100110969A - Seal cooling device for countershaft bearing - Google Patents

Seal cooling device for countershaft bearing Download PDF

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KR20100110969A
KR20100110969A KR1020090029288A KR20090029288A KR20100110969A KR 20100110969 A KR20100110969 A KR 20100110969A KR 1020090029288 A KR1020090029288 A KR 1020090029288A KR 20090029288 A KR20090029288 A KR 20090029288A KR 20100110969 A KR20100110969 A KR 20100110969A
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South Korea
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seal
housing
hole
cooling
present
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KR1020090029288A
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Korean (ko)
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KR101062100B1 (en
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임종호
김기인
김정렬
차지협
송기주
전동춘
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임종호
김기인
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C37/00—Cooling of bearings
    • F16C37/002—Cooling of bearings of fluid bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

PURPOSE: A seal chiller of an intermediate shaft bearing is provided to solve the problems related to the abrasion and damage of a seal and lifespan reduction since cooling efficiency is increased by the application of a cooling hole and a circulating pipe to a surface friction type seal of an intermediate shaft bearing used at a high pressure. CONSTITUTION: A seal chiller of an intermediate shaft bearing comprises a cooling hole(B), a circulating hole(D), and a circulating pipe(4). The cooling hole is formed on the friction portion(C) of a housing(3) and a seal(2) to pass simultaneously through the seal and the housing. The circulating hole is formed on a part of the body of the housing. The circulating hole is connected to a housing space(A) through the housing. One end of the circulating pipe makes contact with the cooling hole. The other end of the circulating pipe makes contact with the circulating hole.

Description

중간축 베어링의 씰 냉각장치{SEAL COOLING DEVICE FOR COUNTERSHAFT BEARING}SEAL COOLING DEVICE FOR COUNTERSHAFT BEARING}

본 발명은 선박 등의 중간축 베어링에 적용되는 씰 냉각장치에 관한 것이다.The present invention relates to a seal cooling device applied to intermediate shaft bearings such as ships.

선박의 수밀격실 내의 추진축 상에 방사상(반경) 추력을 흡수할 수 있도록 설치되는 일련의 베어링을 통칭하여 중간축 베어링(countershaft bearing)이라 한다. 중간축 베어링은 원동기축에서 공작기계 기타 작업기계와의 중간에 있는 축으로서, 주축에서 동력을 받아 작업기계에 동력을 전달하거나 필요에 따라서는 속도를 변환하거나 동력을 분배하는 역할을 하기도 한다. 중간축 베어링은 자체적으로 중심정렬이 이루어지는 베어링과 그렇지 않은 것으로 구분된다.A series of bearings that are installed to absorb radial (radius) thrust on the propulsion shaft in the watertight compartment of the ship is collectively called a countershaft bearing. The intermediate shaft bearing is an intermediate shaft between the prime shaft and the machine tool and other work machines. The intermediate shaft bearing receives power from the main shaft and transmits power to the work machine, and also converts speed or distributes power as necessary. Mid-axis bearings are distinguished from bearings which have their own center alignment.

중간축 베어링의 하우징(housing)은 일반적으로 주철로 제작되며, 경우에 따라서는 강철 용접구조로 제작되기도 한다. 또한 군용 전투함정의 경우에는 충격 및 진동에 견딜 수 있는 고장력강으로 제작되기도 한다.Housings of intermediate shaft bearings are generally made of cast iron and, in some cases, of steel welding. Military combat ships are also made of high-tensile steel that can withstand shock and vibration.

중간축 베어링에는 주로 저널 베어링(journal bearing)이 적용되는데, 소형선박에서는 롤러(roller) 또는 볼(ball) 베어링이 사용되기도 한다. 특히 저널 베어링은 백색합금을 이용하여 베어링 셀(bearing shell)에 5∼8mm 두께로 접 합(bonding)하여 최종적으로 베어링 틈새 정삭가공 후 사용하게 된다.Journal bearings are mainly applied to intermediate shaft bearings, and roller or ball bearings are also used in small ships. In particular, the journal bearing is bonded to the bearing shell (bearing shell) with a thickness of 5 to 8mm using white alloy and finally used after finishing the bearing clearance.

중간축 베어링의 윤활방식에는 강제 윤활방식과 비강제 윤활방식이 있는데, 특수한 경우를 제외하고는 대부분 비강제 윤활방식이 적용되며 여기에는 링(ring) 윤활방식과 디스크(disk) 윤활방식이 있다. 여기서 링 윤활방식의 경우 오일 링의 직경은 베어링 축 지름의 1.3∼1.5배로 하고, 폭은 베어링 축 지름의 8% 정도, 그리고 두께는 15∼20mm로 설계한다. 한편 디스크 윤활방식의 경우 디스크의 직경은 베어링 축 지름의 1.3∼1.5배, 폭은 베어링 축 지름의 12% 정도로 설계한다. 설계특성에 따라 오일 섬프(oil sump) 내에 냉각장치를 설치하여 고속회전 및 전부하(full load) 운전 시 오일 온도 상승에 따른 적정 온도 유지를 담당하게 한다. 이때 냉각수는 주 기관이나 감속기어에 설치된 해수펌프에 의해 공급된다.Lubrication methods for intermediate shaft bearings include forced lubrication and non-force lubrication. Except for special cases, most non-force lubrication is applied, and there are ring lubrication and disk lubrication. In the case of the ring lubrication method, the diameter of the oil ring is 1.3 to 1.5 times the diameter of the bearing shaft, the width is about 8% of the diameter of the bearing shaft, and the thickness is 15 to 20mm. On the other hand, in the case of disk lubrication, the diameter of the disk is 1.3 to 1.5 times the diameter of the bearing shaft and the width is designed to be about 12% of the diameter of the bearing shaft. According to the design characteristics, the cooling device is installed in the oil sump to maintain the proper temperature according to the rise of oil temperature during high speed rotation and full load operation. At this time, the coolant is supplied by the seawater pump installed in the main engine or reduction gear.

기타 저널 베어링 이외의 롤러 및 볼 베어링은 축 직경이 대략 380mm 이하의 중, 소형선박에 주로 사용되며, 정비유지 측면에서 상당히 용이할 뿐만 아니라 신뢰성이 높다.Roller and ball bearings other than journal bearings are mainly used for small and medium sized ships with shaft diameters of approximately 380 mm or less, and are extremely easy and reliable in terms of maintenance.

한편, 중간축 베어링의 누유 및 누수 방지를 위해 씰(seal)이 필요한데, 높은 유압 또는 수압이 발생하는 조건에서 면 마찰식 씰을 적용할 경우 높은 압력이 씰을 눌러 마찰면에 높은 열이 발생하며 이로 인해 씰의 마모 및 손상 그리고 수명 단축의 문제가 발생하게 된다.On the other hand, a seal is required to prevent leakage and leakage of intermediate shaft bearings. When a surface friction type seal is applied under conditions of high hydraulic pressure or hydraulic pressure, high pressure presses the seal to generate high heat on the friction surface. This leads to wear and damage of the seals and shortened life.

본 발명은 상기와 같은 문제점을 해결하기 위해 제안된 것으로, 높은 압력 조건에서 사용되는 중간축 베어링의 면 마찰식 씰에 냉각홀 및 순환파이프를 적용해 냉각효율을 높임으로써 씰의 마모 및 손상 그리고 수명 단축의 문제를 해결할 수 있는 장치를 제공하는 것을 목적으로 한다.The present invention has been proposed to solve the above problems, by applying a cooling hole and the circulation pipe to the surface friction seal of the intermediate shaft bearing used in high pressure conditions to increase the cooling efficiency of wear and damage and life of the seal An object of the present invention is to provide an apparatus capable of solving the problem of shortening.

본 발명의 기타 목적 및 장점들은 하기에 설명될 것이며, 이는 본 발명의 청구범위에 기재된 사항 및 그 실시예의 개시 내용뿐만 아니라, 이들로부터 용이하게 추고할 수 있는 범위 내의 수단 및 조합에 의해 보다 넓은 범위로 포섭될 것임을 첨언한다.Other objects and advantages of the present invention will be described below, which are not limited to the matters set forth in the claims and the disclosure of the embodiments thereof, but also to the broader ranges by means and combinations within the range readily recited therefrom. Add that it will be included.

상기한 목적을 달성하기 위하여 본 발명은, 씰(2)과 하우징(3)의 마찰부(C)에 씰(2)과 하우징(3)을 동시에 관통하도록 냉각홀(B)을 형성하고; 하우징(3)의 몸체 일부에 하우징(3)을 관통하여 하우징공간(A)과 연결되도록 순환홀(D)을 형성하고; 일 끝단은 냉각홀(B)과 연접하고 타 끝단은 순환홀(D)과 연접하는 순환파이프(4)를 형성하여; 하우징공간(A)의 오일이나 물이 순환파이프(4)를 따라 순환하면서 씰(2)과 하우징(3)의 마찰부(C)에서 발생하는 마찰열을 계속적으로 냉각시켜 주는 것을 특징으로 하는 중간축 베어링의 씰 냉각장치를 제시한다.In order to achieve the above object, the present invention provides a cooling hole (B) through the seal (2) and the friction portion (C) of the housing (3) through the seal (2) and the housing (3) at the same time; A circulation hole D is formed in a part of the body of the housing 3 so as to be connected to the housing space A through the housing 3; One end is in contact with the cooling hole (B) and the other end is in contact with the circulation hole (D) to form a circulation pipe (4); The intermediate shaft, characterized in that the oil or water in the housing space (A) circulates along the circulation pipe (4) to continuously cool the frictional heat generated from the friction portion (C) of the seal (2) and the housing (3) Present the seal chiller of the bearing.

본 발명에 따르면, 중간축 베어링의 씰 냉각효율을 증대시켜 씰의 마모 및 손상을 방지하고 수명을 연장시킬 수 있다.According to the present invention, it is possible to increase the seal cooling efficiency of the intermediate shaft bearing to prevent the wear and damage of the seal and to extend the life.

본 발명의 다른 효과는, 이상에서 설명한 실시예 및 본 발명의 청구범위에 기재된 사항뿐만 아니라, 이들로부터 용이하게 추고할 수 있는 범위 내에서 발생할 수 있는 효과 및 산업 발전에 기여하는 잠정적 장점의 가능성들에 의해 보다 넓은 범위로 포섭될 것임을 첨언한다.Other effects of the present invention, as well as those described in the above-described embodiments and claims of the present invention, as well as potential effects that may occur within the range that can be easily estimated therefrom and potential advantages that contribute to industrial development It will be added that it will be covered by a wider scope.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다. 또한, 이하에서 본 발명의 바람직한 실시예를 설명할 것이나, 본 발명의 기술적 사상은 이에 한정하거나 제한되지 않고 당업자에 의해 변형되어 다양하게 실시될 수 있음은 물론이다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

도 1은 본 발명에 따른 중간축 베어링의 씰 냉각장치를 도시하고 있다. 본 발명의 경우, 씰(2)과 하우징(3)의 마찰부(C)에는 씰(2)과 하우징(3)을 동시에 관통하도록 냉각홀(B)이 형성되고, 하우징(3)의 몸체 일부에는 하우징(3)을 관통하여 하우징공간(A)과 연결되도록 순환홀(D)이 형성된다. 그리고 순환파이프(4)의 일 끝단은 냉각홀(B)과 연접하고 타 끝단은 순환홀(D)과 연접된다. 그러면 하우징공간(A)의 오일이나 물이 순환파이프(4)를 따라 순환하면서 씰(2)과 하우징(3)의 마찰부(C)에서 발생하는 마찰열을 계속적으로 냉각시켜 주게 된다. 이에 대하여 보다 상세히 설명하면 다음과 같다.1 shows a seal cooling apparatus of an intermediate shaft bearing according to the present invention. In the present invention, a cooling hole (B) is formed in the friction portion (C) of the seal (2) and the housing (3) to pass through the seal (2) and the housing (3) at the same time, and a part of the body of the housing (3). The circulation hole D is formed through the housing 3 to be connected to the housing space A. One end of the circulation pipe 4 is connected to the cooling hole B and the other end is connected to the circulation hole D. Then, the oil or water in the housing space A circulates along the circulation pipe 4, thereby continuously cooling the frictional heat generated from the friction portion C of the seal 2 and the housing 3. This will be described in more detail as follows.

본 발명에서 샤프트(1)와 씰(2)은 회전체이며, 상호 고정되어 있어 함께 회전하게 된다. 그리고 하우징(3)은 고정체이며, 하우징공간(A)에는 오일이나 물이 채워진다. 하우징공간(A)에 채워진 오일이나 물에 의해 씰(2)은 높은 압력을 받게 된다. 이처럼 높은 압력을 받은 상태에서 샤프트(1)가 회전하면 씰(2)도 샤프트(1)와 함께 회전하면서 씰(2)과 하우징(3)의 마찰부(C)에 높은 마찰열이 발생하게 된다. 이로 인하여 씰(2)은 마모 및 손상되며 수명이 단축된다.In the present invention, the shaft 1 and the seal 2 are rotating bodies, and are fixed to each other to rotate together. The housing 3 is a stationary body, and the housing space A is filled with oil or water. The seal 2 is subjected to high pressure by the oil or water filled in the housing space A. When the shaft 1 rotates in a state of being subjected to such high pressure, the seal 2 also rotates together with the shaft 1 to generate high frictional heat in the friction portion C of the seal 2 and the housing 3. As a result, the seal 2 is worn and damaged and its life is shortened.

본 발명은 이러한 문제를 해결하기 위하여, 씰(2)과 하우징(3)의 마찰부(C)에는 씰(2)과 하우징(3)을 동시에 관통하는 냉각홀(B)을 가공하고, 하우징(3)의 몸체 일부에는 하우징(3)을 관통하여 하우징공간(A)과 연결되는 순환홀(D)을 가공하였다. 그리고 순환파이프(4)로 냉각홀(B)과 순환홀(D)을 서로 연결시켰다.In order to solve this problem, the present invention processes the cooling hole B through the seal 2 and the housing 3 at the friction portion C of the seal 2 and the housing 3 at the same time. Part 3 of the body was processed through the housing 3, the circulation hole (D) connected to the housing space (A). And the cooling pipe (B) and the circulation hole (D) was connected to each other by the circulation pipe (4).

그러면 하우징공간(A)에 채워져 있는 오일이나 물은 하우징공간(A)의 압력에 의해 냉각홀(B) → 마찰부(C) → 순환파이프(4) → 순환홀(D) → 하우징공간(A) → 냉각홀(B)의 순서로 순환하게 된다. 즉, 냉각홀(B)을 통해 마찰부(C)로 들어온 오일이나 물은 씰(2) 냉각 후 가열되고, 가열된 오일이나 물은 순환파이프(4)를 따라 다시 하우징공간(A)으로 되돌아가서 냉각된다. 그리고 냉각된 오일이나 물은 다시 냉각홀(B)을 통해 마찰부(C)로 들어가 씰(2)을 냉각시킨 후 가열되는 것이다. 이러한 냉각 순환 시스템으로써 씰(2)의 냉각효율을 상당히 높일 수 있으며, 그 결과 높은 마찰열에 의한 씰(2)의 마모 및 손상을 줄이고 수명 단축을 막을 수 있다.The oil or water filled in the housing space (A) is then cooled by the pressure of the housing space (A), cooling hole (B) → friction portion (C) → circulation pipe (4) → circulation hole (D) → housing space (A). ) → It circulates in the order of cooling hole (B). That is, oil or water entering the friction part C through the cooling hole B is heated after cooling the seal 2, and the heated oil or water is returned to the housing space A along the circulation pipe 4 again. Go cool. The cooled oil or water enters the friction part C again through the cooling hole B, cools the seal 2, and is heated. Such a cooling circulation system can significantly increase the cooling efficiency of the seal 2, and as a result, it is possible to reduce wear and damage of the seal 2 due to high frictional heat and prevent shortening of life.

이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위 내에서 다양한 수정, 변경 및 치환이 가능할 것이다. 따라서 본 발명에 개시된 실시예 및 첨부된 도면은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예 및 첨부된 도면에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

도 1은 본 발명에 따른 중간축 베어링의 씰 냉각장치를 도시하고 있다.1 shows a seal cooling apparatus of an intermediate shaft bearing according to the present invention.

<도면의 주요부호에 대한 설명><Description of Major Symbols in Drawing>

1 : 샤프트1: shaft

2 : 씰2: seal

3 : 하우징3: housing

4 : 순환파이프4: circulation pipe

A : 하우징공간A: Housing space

B : 냉각홀B: cooling hole

C : 마찰부C: friction part

D : 순환홀D: circulation hole

Claims (1)

씰(2)과 하우징(3)의 마찰부(C)에 씰(2)과 하우징(3)을 동시에 관통하도록 냉각홀(B)을 형성하고; 하우징(3)의 몸체 일부에 하우징(3)을 관통하여 하우징공간(A)과 연결되도록 순환홀(D)을 형성하고; 일 끝단은 냉각홀(B)과 연접하고 타 끝단은 순환홀(D)과 연접하는 순환파이프(4)를 형성하여; 하우징공간(A)의 오일이나 물이 순환파이프(4)를 따라 순환하면서 씰(2)과 하우징(3)의 마찰부(C)에서 발생하는 마찰열을 계속적으로 냉각시켜 주는 것을 특징으로 하는 중간축 베어링의 씰 냉각장치.Forming a cooling hole (B) through the seal (2) and the friction portion (C) of the housing (3) so as to pass through the seal (2) and the housing (3) simultaneously; A circulation hole D is formed in a part of the body of the housing 3 so as to be connected to the housing space A through the housing 3; One end is in contact with the cooling hole (B) and the other end is in contact with the circulation hole (D) to form a circulation pipe (4); The intermediate shaft, characterized in that the oil or water in the housing space (A) circulates along the circulation pipe (4) to continuously cool the frictional heat generated from the friction portion (C) of the seal (2) and the housing (3) Seal chiller of bearing.
KR1020090029288A 2009-04-06 2009-04-06 Seal chiller of intermediate shaft bearing KR101062100B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051768A1 (en) 2010-11-09 2012-05-10 Kia Motors Corporation Method for determining the operating state of a transmission component

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007230381A (en) 2006-03-01 2007-09-13 Nakashima Propeller Co Ltd Seal structure of impeller shaft in water jet propulsion device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051768A1 (en) 2010-11-09 2012-05-10 Kia Motors Corporation Method for determining the operating state of a transmission component

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