KR101272684B1 - Bearing cooling unit with forced circulation flow line and liquid fuel pump including the unit - Google Patents

Bearing cooling unit with forced circulation flow line and liquid fuel pump including the unit Download PDF

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KR101272684B1
KR101272684B1 KR1020110118875A KR20110118875A KR101272684B1 KR 101272684 B1 KR101272684 B1 KR 101272684B1 KR 1020110118875 A KR1020110118875 A KR 1020110118875A KR 20110118875 A KR20110118875 A KR 20110118875A KR 101272684 B1 KR101272684 B1 KR 101272684B1
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bearing
circulation path
case
cooling
cooling medium
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KR1020110118875A
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Korean (ko)
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KR20130053581A (en
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최창호
김진한
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한국항공우주연구원
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—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
    • F16C37/00—Cooling of bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid
    • 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
    • F16C2360/00—Engines or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S384/00—Bearings
    • Y10S384/90—Cooling or heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps

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

Abstract

본 발명은 임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하기 위하여 상기 케이스의 외부에 순환로를 설치하여, 상기 케이스 내부에 공급되는 물질을 강제로 피드백시켜 상기 베어링을 냉각시키는 베어링 냉각장치 및 상기 냉각장치를 구비하는 액체연료펌를 개시(introduce)한다. 상기 강제 순환로를 포함하는 베어링 냉각장치는, 임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하며, 제1순환로, 제2순환로 및 덮개를 구비한다. 상기 제1순환로는 상기 케이스의 외부에 설치되며, 냉각매체유입구로부터 유입된 상기 물질을 냉각매체유출구로 전달한다. 상기 제2순환로는 상기 베어링 지지부의 내부에 형성되며, 상기 냉각매체유출구로부터 유출되는 상기 물질을 상기 베어링에 전달한다. 상기 덮개는 상기 베어링들을 밀폐한다. The present invention is to install a circulation path to the outside of the case to cool the bearing supported by the bearing support installed in the inner space of the case for transferring any material, forcibly fed back the material supplied in the case to the bearing A bearing cooling device for cooling the oil and a liquid fuel pump including the cooling device are introduced. The bearing cooling apparatus including the forced circulation path cools a bearing supported by a bearing support installed in an inner space of a case for transferring any substance, and includes a first circulation path, a second circulation path, and a cover. The first circulation path is installed outside the case and transfers the material introduced from the cooling medium inlet to the cooling medium outlet. The second circulation path is formed inside the bearing support, and transfers the material flowing out of the cooling medium outlet to the bearing. The cover seals the bearings.

Description

강제 순환로를 포함하는 베어링 냉각장치 및 상기 베어링 냉각장치를 구비하는 액체연료펌프{Bearing cooling unit with forced circulation flow line and liquid fuel pump including the unit} Bearing cooling unit including a forced circulation path and a liquid fuel pump including the bearing cooling device {Bearing cooling unit with forced circulation flow line and liquid fuel pump including the unit}

본 발명은 임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하는 냉각장치에 관한 것으로, 특히, 상기 케이스의 외부에 순환로를 설치하여, 상기 케이스 내부에 공급되는 물질을 강제로 피드백시켜 상기 베어링을 냉각시키는 베어링 냉각장치에 관한 것이다.
The present invention relates to a cooling device for cooling a bearing supported by a bearing support installed in an inner space of a case for delivering an arbitrary material, and in particular, by installing a circulation path outside the case and supplying the inside of the case. It relates to a bearing cooling device for cooling the bearing by forcibly feeding back.

원심형 펌프에 사용되는 인듀서(inducers)는 공급되는 액체를 혼합하는데 사용되는 날개를 가진 임펠러(Impler) 앞에 설치되는 나선형이 회전하는 구조(프로펠라)로서, 물질이 공급되는 부분의 압력을 상승시켜, 임펠러의 흡입성능을 향상시키는 역할을 한다. Inducers used in centrifugal pumps are spiral rotating structures (propellers) installed in front of impellers with wings used to mix the supplied liquid. This is to improve the suction performance of the impeller.

도 1은 종래의 유체전달펌프의 단면도이다. 1 is a cross-sectional view of a conventional fluid transfer pump.

도 2는 회전축에 삽입된 인듀서를 나타낸다. 2 shows the inducer inserted in the axis of rotation.

도 3은 인듀서의 후단부에 설치되는 임펠러를 나타낸다. 3 shows an impeller installed at the rear end of the inducer.

도 1을 참조하면, 유체전달펌프는, 인듀서(100), 회전축(200), 케이스(300), 베어링 지지부(400), 베어링(500)을 구비한다. Referring to FIG. 1, the fluid transfer pump includes an inducer 100, a rotation shaft 200, a case 300, a bearing support 400, and a bearing 500.

인듀서(100)는 회전축(200)의 외경에 나선형으로 결합하여 전방으로부터 흡입한 액체를 후방에 설치된 임펠러(도 3)로 전달한다. 회전축(200)을 지지하는 베어링(500)은 베어링 지지부(400)에 의해서 그 위치가 고정된다. 회전축(200)의 회전을 지지하는 베어링(500)은 인듀서(100) 입구로 유입되는 유동에 의해서 자연 냉각된다. The inducer 100 is helically coupled to the outer diameter of the rotating shaft 200 to transfer the liquid sucked from the front to the impeller (Fig. 3) installed in the rear. The bearing 500 supporting the rotating shaft 200 is fixed in position by the bearing support 400. The bearing 500 supporting the rotation of the rotary shaft 200 is naturally cooled by the flow flowing into the inducer 100 inlet.

도 1을 참조하면, 종래의 유체전달펌프(100)에서의 액체의 흐름을 화살표로 도시하였는데, 중앙 부분으로 흐르는 액체가 베어링(500)을 통과하면서 베어링(500)을 냉각시킨다. Referring to FIG. 1, the flow of liquid in the conventional fluid transfer pump 100 is illustrated by an arrow, and the liquid flowing to the central portion cools the bearing 500 while passing through the bearing 500.

인듀서(100)가 회전하면서 베어링(500)에서는 많은 열이 발생하게 되는데, 인듀서(100)의 회전축을 지지하는 베어링(500)의 냉각을 위해서는 지속적으로 냉각유가 공급되어야 한다. 액체로켓엔진용의 터보펌프 등에 사용되는 고성능 펌프의 경우 고 회전수, 저 압력 등의 극심한 환경에서 작동하며, 회전축을 지지하는 베어링의 냉각을 작동유로 대체하기도 한다. 여기서 작동유는 유체전달펌프(100)에서 전달하고자하는 액체연료 또는 액체산소를 의미한다. As the inducer 100 rotates, a lot of heat is generated in the bearing 500, and cooling oil must be continuously supplied to cool the bearing 500 supporting the rotating shaft of the inducer 100. High-performance pumps, such as turbopumps for liquid rocket engines, operate in extreme environments, such as high speed and low pressure, and replace cooling of bearings that support the rotating shaft with hydraulic fluid. Here, the working oil means liquid fuel or liquid oxygen to be delivered from the fluid transfer pump 100.

이때 작동유가 매우 낮은 압력에서 베어링(500)으로 유입될 경우, 가열된 베어링(500)에서 작동유의 기화가 일어나기 때문에 베어링(500)의 냉각이 충분하게 되지 않을 가능성이 커진다. 베어링(500)의 냉각이 충분하지 않을 경우 베어링(500)의 조기 파손으로 이어지게 된다.
At this time, when the hydraulic oil flows into the bearing 500 at a very low pressure, the cooling of the bearing 500 is not sufficient because the vaporization of the hydraulic oil occurs in the heated bearing 500. Insufficient cooling of the bearing 500 leads to premature failure of the bearing 500.

본 발명이 해결하고자 하는 기술적 과제는, 임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하기 위하여 상기 케이스의 외부에 순환로를 설치하여, 상기 케이스 내부에 공급되는 물질을 강제로 피드백시켜 상기 베어링을 냉각시키는 베어링 냉각장치를 제공하는 것에 있다.
The technical problem to be solved by the present invention is to install a circulation path on the outside of the case to cool the bearing supported by the bearing support installed in the inner space of the case for transferring any material, the material supplied into the case It is to provide a bearing cooling device for cooling the bearing by forcibly feeding back.

본 발명이 해결하고자 하는 다른 기술적 과제는, 임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하기 위하여 상기 케이스의 외부에 순환로를 설치하여, 상기 케이스 내부에 공급되는 물질을 강제로 피드백시켜 상기 베어링을 냉각시키는 베어링 냉각장치를 구비하는 액체연료펌프를 제공하는 것에 있다.
Another technical problem to be solved by the present invention is to provide a circulation path to the outside of the case to cool the bearing supported by the bearing support installed in the inner space of the case for transferring any material, which is supplied to the inside of the case A liquid fuel pump having a bearing cooling device for forcibly feeding back a material to cool the bearing.

상기 기술적 과제를 달성하기 위한 본 발명의 일 실시 예에 따른 강제 순환로를 포함하는 베어링 냉각장치는, 임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하며, 제1순환로, 제2순환로 및 덮개를 구비한다. 상기 제1순환로는 상기 케이스의 외부에 설치되며, 냉각매체유입구로부터 유입된 상기 물질을 냉각매체유출구로 전달한다. 상기 제2순환로는 상기 베어링 지지부의 내부에 형성되며, 상기 냉각매체유출구로부터 유출되는 상기 물질을 상기 베어링에 전달한다. 상기 덮개는 상기 베어링을 밀폐한다.
Bearing cooling apparatus including a forced circulation circuit according to an embodiment of the present invention for achieving the above technical problem, the bearing is supported by the bearing support installed in the inner space of the case for transferring any material, the first A circulation path, a second circulation path and a cover are provided. The first circulation path is installed outside the case and transfers the material introduced from the cooling medium inlet to the cooling medium outlet. The second circulation path is formed inside the bearing support, and transfers the material flowing out of the cooling medium outlet to the bearing. The cover seals the bearing.

상기 다른 기술적 과제를 달성하기 위한 본 발명의 일 실시 예에 따른 액체연료펌프는, 케이스, 베어링 지지부, 베어링들, 회전축, 제1순환로, 제2순환로 및 덮개를 구비한다. 상기 케이스는 임의의 물질을 전달하며, 외부에 냉매 유출구 및 냉매 유입구가 각각 형성된다. 상기 베어링 지지부는 상기 케이스의 내부 공간에 설치된다. 상기 베어링은 상기 베어링 지지부에 의해 위치가 지지 된다. 상기 회전축은 상기 베어링을 따라 회전한다. 상기 제1순환로는 상기 케이스의 외부에 설치되며, 상기 냉매 유출구 및 상기 냉매 유입구 사이에 형성된다. 상기 제2순환로는 상기 베어링 지지부의 내부에 형성되며, 상기 냉매 유입구로부터 유출되는 상기 물질을 상기 베어링에 전달한다. 상기 덮개는 상기 베어링을 밀폐한다.
Liquid fuel pump according to an embodiment of the present invention for achieving the above another technical problem, a case, a bearing support, bearings, a rotating shaft, the first circulation path, the second circulation path and the cover is provided. The case delivers any material, and a coolant outlet and a coolant inlet are respectively formed outside. The bearing support is installed in the inner space of the case. The bearing is supported by the bearing support. The axis of rotation rotates along the bearing. The first circulation path is installed outside the case and is formed between the refrigerant outlet and the refrigerant inlet. The second circulation path is formed in the bearing support, and transfers the material flowing out of the refrigerant inlet to the bearing. The cover seals the bearing.

케이스에 외측에 냉매의 순환로를 구비하여 고압력의 인듀서 뒤쪽의 유체를 강제순환하여 베어링을 냉각함으로써, 고압력의 냉매를 이용하여 안정적으로 베어링의 냉각을 수행할 수 있다. Cooling the bearing by providing a circulation path of the coolant on the outside of the case by forcibly circulating the fluid behind the high-pressure inducer, it is possible to reliably cool the bearing using the high-pressure refrigerant.

또한 이러한 냉각유량은 인듀서의 양정 상승이 높은 저유량에서 더 많아지기 때문에 저유량에서의 인듀서의 급격한 성능저하 및 서어지와 같은 진동을 지연시키는 부수적인 효과도 얻을 수 있으므로 펌프의 성능 및 안정성을 높일 수 있다.
In addition, since the cooling flow of the inducer rises more at high flow, the inducer's performance and stability can be attained because the inducer's abrupt deterioration at low flow and the side effect of delaying vibration such as surge can be obtained. Can increase.

도 1은 종래의 유체전달펌프의 단면도이다.
도 2는 회전축에 삽입된 인듀서를 나타낸다.
도 3은 인듀서의 후단부에 설치되는 임펠러를 나타낸다.
도 4는 본 발명에 따른 강제 순환로를 포함하는 베어링 냉각장치의 단면도이다. 1 is a cross-sectional view of a conventional fluid transfer pump.
2 shows the inducer inserted in the axis of rotation.
3 shows an impeller installed at the rear end of the inducer.
4 is a cross-sectional view of a bearing cooling apparatus including a forced circulation path according to the present invention.

본 발명과 본 발명의 동작상의 이점 및 본 발명의 실시에 의하여 달성되는 목적을 충분히 이해하기 위해서는 본 발명의 예시적인 실시 예를 설명하는 첨부 도면 및 첨부 도면에 기재된 내용을 참조하여야만 한다. In order to fully understand the present invention and the operational advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings, which are provided for explaining exemplary embodiments of the present invention, and the contents of the accompanying drawings.

이하 첨부한 도면을 참조하여 본 발명의 바람직한 실시 예를 설명함으로써, 본 발명을 상세히 설명한다. 각 도면에 제시된 동일한 참조부호는 동일한 부재를 나타낸다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

도 4는 본 발명에 따른 강제 순환로를 포함하는 베어링 냉각장치의 단면도이다. 4 is a cross-sectional view of a bearing cooling apparatus including a forced circulation path according to the present invention.

도 4를 참조하면, 본 발명에 따른 베어링 냉각장치는, 임의의 물질을 전달하는 케이스(300)의 내부 공간에 설치된 베어링 지지부(400)에 의해 지지 되는 베어링들(500)을 냉각하며, 제1순환로(30), 제2순환로(35) 및 덮개(60)를 구비한다. Referring to FIG. 4, the bearing cooling apparatus according to the present invention cools the bearings 500 supported by the bearing support part 400 installed in the inner space of the case 300 for transferring any material, and the first The circulation path 30, the 2nd circulation path 35, and the cover 60 are provided.

제1순환로(30)는 케이스(300)의 외부에 설치되며, 냉각매체유입구(10)로부터 유입된 물질을 냉각매체유출구(20)로 전달한다. 여기서 물질은 베어링 냉각장치가 전달하고자 하는 물질이며, 예를 들면 액체연료 또는 액체산소 중 하나가 될 수 있다. 제2순환로(35)는 베어링 지지부(400)의 내부에 형성되며, 냉각매체유출구(20)로부터 유출되는 물질을 베어링(500)에 전달한다. The first circulation path 30 is installed outside the case 300, and transfers the material introduced from the cooling medium inlet 10 to the cooling medium outlet 20. The material here is the material the bearing chiller is intended to deliver, for example, it can be either liquid fuel or liquid oxygen. The second circulation path 35 is formed in the bearing support 400, and transfers the material flowing out of the cooling medium outlet 20 to the bearing 500.

덮개(60)는 케이스(300)를 따라 전달되는 물질과 최초로 접촉하게 되는 방향에 설치하여 베어링(500)을 밀폐함으로써, 제1순환로(30) 및 제2순환로(35)를 거쳐 유입되는 냉매에 의해서만 냉각된다. The cover 60 is installed in a direction in which the material is first contacted with the case 300 and sealed to seal the bearing 500 to the refrigerant flowing through the first circulation path 30 and the second circulation path 35. Only by cooling.

제1순환로(30)의 중간에는, 제1순환로(30)를 따라 전달되는 물질의 양을 조절하는 조절구(50)가 설치되며, 조절구(50)에는 유체가 통과하는 오리피스(51)가 더 형성되어 있다. In the middle of the first circulation path 30, a control device 50 for adjusting the amount of material delivered along the first circulation path 30 is installed, the control device 50 is provided with an orifice 51 through which the fluid passes It is formed more.

인듀서(100) 및 임펠러(미도시)의 후방에 있는 펌프(미도시)의 동작에 따라 인듀서(100)로 유입되는 물질은 임펠러(미도시)를 거쳐 전달되어야 하는 곳으로 이동하게 된다. 도 4를 참조하면, 인듀서(100)의 오른쪽 부분의 압력은 베어링(500)의 왼쪽에 비해 압력이 높다. 따라서 베어링(500)의 오른쪽 공간(5)에 위치한 물질은 냉각매체유입구(10) 및 냉각매체유출구(20)를 통해 베어링(500)에 전달되며, 이때 물질의 공급압력은 도 1에 도시된 종래의 경우에 비해 높으므로, 기화가 쉽게 발생하지 않으므로 냉각의 효과가 상대적으로 크게 된다. According to the operation of the inducer 100 and the pump (not shown) behind the impeller (not shown), the material flowing into the inducer 100 is moved to the place to be delivered through the impeller (not shown). Referring to FIG. 4, the pressure of the right part of the inducer 100 is higher than that of the left side of the bearing 500. Therefore, the material located in the right space 5 of the bearing 500 is transferred to the bearing 500 through the cooling medium inlet 10 and the cooling medium outlet 20, where the supply pressure of the material is shown in FIG. 1. Since it is higher than the case, since the vaporization does not occur easily, the effect of cooling becomes relatively large.

따라서, 순환로(30, 35)를 흐르는 물질의 량은 인듀서(100) 전방과 후방의 압력차에 비례하게 되며, 순환로(30, 35)의 저항에 반비례한다. 순환로(30, 35)의 저항이 일정할 경우에 냉매로 사용되는 순환물질의 량은 인듀서(100)의 양정이 큰, 다시 말하면 인듀서 전방과 후방의 압력차가 큰 저유량에서 커지게 된다. Therefore, the amount of the material flowing through the circulation paths 30 and 35 is proportional to the pressure difference between the front and the rear of the inducer 100 and is inversely proportional to the resistance of the circulation paths 30 and 35. When the resistance of the circulation paths 30 and 35 is constant, the amount of circulating material used as the refrigerant increases at a low flow rate where the head of the inducer 100 is large, that is, the pressure difference between the front and the back of the inducer is large.

저유량일 경우 큰 압력차로 인하여 순환로(30, 35)의 유량이 증가하여 인듀서(100) 입구에서는 적정유량에 가까워지므로 저유량에서의 역류 및 서어지가 지연되는 효과가 있게 된다. In the case of low flow rate, the flow rate of the circulation paths 30 and 35 increases due to the large pressure difference, so that the inflow of the inductor 100 is close to the proper flow rate, so that the reverse flow and surge at low flow rate are delayed.

이때, 오리피스(51)의 크기가 작게 형성된 조절구(50)를 사용하여 설계유량 및 고유량에서는 순환 물질의 적게 흐르도록 조절할 수 있다. At this time, by using the control device 50 formed with a small size of the orifice 51 can be adjusted to flow less of the circulating material at the design flow rate and high flow rate.

냉각용 물질이 이동하는 경로를 표시한 실선 화살표를 참조하면, 공간(5)에 있던 냉각용 물질은 제1순환로(30) 및 제2순환로(35)를 거쳐 베어링(500)을 통과하여 다시 내부 공간(5)으로 되돌아 간다. 점선으로 표시된 것은 물질 즉 액체연료 또는 액체산소의 전송경로를 나타낸다.
Referring to the solid arrow indicating the path of the cooling material movement, the cooling material in the space 5 passes through the bearing 500 through the first circulation path 30 and the second circulation path 35 and is again inside. Return to space 5. Dotted lines indicate the transmission path of the substance, liquid fuel or liquid oxygen.

이상에서는 본 발명에 대한 기술사상을 첨부 도면과 함께 서술하였지만 이는 본 발명의 바람직한 실시 예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 또한 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 이라면 누구나 본 발명의 기술적 사상의 범주를 이탈하지 않는 범위 내에서 다양한 변형 및 모방 가능함은 명백한 사실이다.
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

10: 냉각매체유입구 20: 냉각매체유출구
30: 제1순환로 35: 제2순환로
40: 결합구 50: 조절구
51: 오리피스 60: 덮개
100: 인듀서 200: 회전축
300: 케이스 400: 베어링 지지부
500: 베어링 10: cooling medium inlet 20: cooling medium outlet
30: first circulation passage 35: second circulation passage
40: coupling sphere 50: control sphere
51: orifice 60: cover
100: inducer 200: axis of rotation
300: case 400: bearing support
500: bearing

Claims (2)

임의의 물질을 전달하는 케이스의 내부 공간에 설치된 베어링 지지부에 의해 지지 되는 베어링을 냉각하는 베어링 냉각장치에 있어서,
상기 케이스의 외부에 설치되며, 냉각매체유입구로부터 유입된 상기 물질을 냉각매체유출구로 전달하는 제1순환로;
상기 베어링 지지부의 내부에 형성되며, 상기 냉각매체유출구로부터 유출되는 상기 물질을 상기 베어링에 전달하는 제2순환로; 및
상기 베어링을 밀폐하는 덮개를 구비하는 것을 특징으로 하는 강제 순환로를 포함하는 베어링 냉각장치.
In the bearing chiller for cooling a bearing supported by a bearing support installed in the inner space of the case for transferring any material,
A first circulation path installed outside the case and transferring the material introduced from the cooling medium inlet to the cooling medium outlet;
A second circulation path formed in the bearing support and configured to transfer the material flowing out of the cooling medium outlet to the bearing; And
Bearing cooling apparatus including a forced circulation path characterized in that it comprises a cover for sealing the bearing.
임의의 물질을 전달하며, 외부에 냉각매체유출구 및 냉각매체유입구가 각각 형성된 케이스;
상기 케이스의 내부 공간에 설치된 베어링 지지부;
상기 베어링 지지부에 의해 지지 되는 베어링들;
상기 베어링들을 따라 회전하는 회전축;
상기 케이스의 외부에 설치되며, 상기 냉각매체유출구 및 상기 냉각매체유입구 사이에 형성된 제1순환로;
상기 베어링 지지부의 내부에 형성되며, 상기 냉각매체유입구로부터 유출되는 상기 물질을 상기 베어링들에 전달하는 제2순환로; 및
상기 베어링들을 밀폐하는 덮개를 구비하는 것을 특징으로 하는 액체연료펌프.
A case for transferring any material and having a cooling medium outlet and a cooling medium inlet respectively formed therein;
A bearing support installed in the inner space of the case;
Bearings supported by the bearing support;
A rotating shaft rotating along the bearings;
A first circulation path disposed outside the case and formed between the cooling medium outlet and the cooling medium inlet;
A second circulation path formed in the bearing support and configured to transfer the material flowing out of the cooling medium inlet to the bearings; And
And a cover for sealing the bearings.
KR1020110118875A 2011-11-15 2011-11-15 Bearing cooling unit with forced circulation flow line and liquid fuel pump including the unit KR101272684B1 (en)

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CN114001033A (en) * 2021-10-31 2022-02-01 浙江水泵总厂有限公司 Axial liquid inlet structure and multistage centrifugal pump with same
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11166497A (en) * 1997-12-04 1999-06-22 Ishikawajima Harima Heavy Ind Co Ltd Cooling and lubricating structure of pump integral with motor
WO2004070209A1 (en) 2003-02-03 2004-08-19 Cap Co., Ltd. Hot gas blowing fan
KR20080029772A (en) * 2006-09-28 2008-04-03 에스엔이씨엠에이 Pump with electric motor, immersed in the fluid to be pumped

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11166497A (en) * 1997-12-04 1999-06-22 Ishikawajima Harima Heavy Ind Co Ltd Cooling and lubricating structure of pump integral with motor
WO2004070209A1 (en) 2003-02-03 2004-08-19 Cap Co., Ltd. Hot gas blowing fan
KR20080029772A (en) * 2006-09-28 2008-04-03 에스엔이씨엠에이 Pump with electric motor, immersed in the fluid to be pumped

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