WO2023082227A1 - 舵密封结构及船舵 - Google Patents

舵密封结构及船舵 Download PDF

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Publication number
WO2023082227A1
WO2023082227A1 PCT/CN2021/130523 CN2021130523W WO2023082227A1 WO 2023082227 A1 WO2023082227 A1 WO 2023082227A1 CN 2021130523 W CN2021130523 W CN 2021130523W WO 2023082227 A1 WO2023082227 A1 WO 2023082227A1
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WO
WIPO (PCT)
Prior art keywords
sealing
sealing ring
rudder
rudder blade
seat
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Application number
PCT/CN2021/130523
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English (en)
French (fr)
Inventor
宋勇荣
樊岩
Original Assignee
无锡市东舟船舶设备股份有限公司
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 无锡市东舟船舶设备股份有限公司 filed Critical 无锡市东舟船舶设备股份有限公司
Priority to PCT/CN2021/130523 priority Critical patent/WO2023082227A1/zh
Priority to CN202180003834.6A priority patent/CN114207328A/zh
Publication of WO2023082227A1 publication Critical patent/WO2023082227A1/zh

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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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials

Definitions

  • the present application relates to the technical field of ships, for example, to a rudder sealing structure and a ship rudder.
  • the rudder blade is installed at the bottom of the ship, and the rudder blade swings left and right to realize the steering of the ship. Therefore, the rudder plays a very important role on the ship and is one of the important equipment of the ship. one.
  • the rudder blade support tube is covered with a rudder blade and a pressure ring, the pressure ring is located at one end of the rudder blade to limit the axial position of the rudder blade, and an O-ring is arranged radially between the pressure ring and the rudder blade support tube
  • the sealing type is single and cannot adapt to frequent changes in working conditions, which may easily cause excessive fatigue of the sealing ring, deformation and wear of the sealing ring.
  • the service life is greatly reduced, leading to seal failure and unsatisfactory sealing effect, resulting in a large amount of seawater leakage, and seawater entering the rudder blade and steering engine room, which has a great impact on the navigation safety of the ship and the service life of the equipment.
  • the present application provides a rudder sealing structure and a ship rudder, which can solve the problem in the related art that the sealing structure between the rudder blade and the rudder stock is prone to failure, and improve the service life and safety of the ship.
  • One embodiment provides a rudder sealing structure for sealing rudder blade bearings and rudder blade support tubes, the rudder blade bearings are used to support rudder blades, the rudder sealing structure includes: a mounting seat plate, an inner portion of the mounting seat plate The surrounding surface is provided with a first installation groove, and the bottom surface of the installation seat plate is provided with a second installation groove; the first sealing ring is set to be sealed and connected to the installation seat plate, and the first sealing ring includes a A sealing body part in the installation groove and a sealing part protruding from the sealing body part, the sealing body part is attached to the groove wall of the first installation groove; and a second sealing ring is arranged on the sealing body part in the second installation slot.
  • An embodiment also provides a rudder, including a rudder blade, a rudder blade support tube and a rudder blade bearing, the rudder blade is mounted on the rudder blade bearing, and the rudder blade bearing is sleeved on the rudder blade support tube , the above-mentioned rudder sealing structure is installed on the rudder blade bearing.
  • Fig. 1 is a cross-sectional view of a rudder sealing structure in an embodiment of the present application
  • Fig. 2 is a partial enlarged view of place A in Fig. 1;
  • Fig. 3 is a cross-sectional view of a fifth sealing ring in an embodiment of the present application.
  • first position and second position are two different positions, and "above”, “above” and “above” the first feature on the second feature include that the first feature is on the second feature. Directly above and obliquely above, or simply means that the first feature level is higher than the second feature. "Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
  • the sealing structure between the rudder blade and the rudder blade support tube on the ship usually uses an O-ring for dynamic sealing.
  • the sealing type is single and cannot adapt to frequent changes in working conditions.
  • the sealing ring is deformed and worn.
  • due to the large amount of mud and sand in seawater it is easy to cause serious wear and tear of the O-ring, and the service life is greatly reduced, resulting in seal failure, unsatisfactory sealing effect, large seawater leakage, and seawater entering the rudder blade and rudder.
  • the engine room has a great impact on the navigation safety of the ship and the life of the equipment.
  • this embodiment provides a rudder sealing structure, which is used to seal the rudder blade bearing 1 and the rudder blade support tube 2 .
  • the rudder sealing structure includes a mounting seat plate 3 , a first sealing ring 4 and a second sealing ring 5 .
  • the installation seat plate 3 is sleeved on the rudder blade support tube 2 and fixed on the top of the rudder blade bearing 1, the inner peripheral surface of the installation seat plate 3 is provided with a first installation groove, and the bottom surface of the installation seat plate 3 is provided with a second Installation groove;
  • the first sealing ring 4 is arranged in the first installation groove, and is arranged to be sealed and connected to the installation seat plate 3 and the rudder blade support tube 2;
  • the second sealing ring 5 is arranged in the second installation groove, and is arranged to be installed in a sealed connection Seat plate 3 and rudder blade bearing 1.
  • the rudder blade bearing 1 is sleeved on the rudder blade support tube 2, and the rudder blade bearing 1 is configured to install the rudder blade, and the rudder blade is rotated relative to the rudder blade support tube 2 through the rudder blade bearing 1, and the rudder blade and the rudder blade Leaf support tube 2 clearance fit.
  • the up and down direction is shown in the ab direction in Fig. 1, and the first sealing ring 4 is attached to the inner surface of the seat plate 3 and the outer surface of the rudder blade support tube 2 respectively, and can be aligned along the axial direction of the rudder blade support tube 2.
  • the gap between the rudder blade bearing 1 and the rudder blade support tube 2 is sealed to prevent water, sediment and other sundries from entering the rudder blade and the rudder blade support tube 2 from the gap between the rudder blade bearing 1 and the rudder blade support tube 2 between.
  • the second seal ring 5 is attached to the lower surface of the mounting plate and the upper surface of the rudder blade bearing 1 respectively, and can seal the gap between the rudder blade bearing 1 and the rudder blade support tube 2 along the radial direction of the rudder blade support tube 2 , to prevent water, sediment and other sundries from entering between the rudder blade and the rudder blade support tube 2 from the gap between the rudder blade bearing 1 and the mounting seat plate 3 .
  • the rotation gap between the rudder blade and the rudder blade support tube 2 can be effectively sealed when the ship is sailing and turning the rudder.
  • the first sealing ring 4 includes a sealing body part 41 and a sealing part 42, wherein the sealing body part 41 is arranged in the first sealing groove and is attached to the bottom wall and the side wall of the first sealing groove respectively,
  • the sealing portion 42 protrudes from the sealing body portion 41 and is elastically pressed against the outer peripheral surface of the rudder blade support tube 2 , so as to ensure the tight contact between the sealing portion 42 and the rudder blade support tube 2 , thereby preventing seal failure.
  • the first sealing ring 4 and the second sealing ring 5 are respectively made of elastic material.
  • the first sealing ring 4 adopts a special-shaped part, and the second sealing ring 5 can adopt an O-ring.
  • the material of the first sealing ring 4 can specifically be a polyether rubber material.
  • the axial section of the sealing part 42 is strip-shaped and is inclined relative to the axis of the rudder blade support tube 2, and the first part of the sealing part 42
  • the end is connected to the sealing body part 41, the second end of the sealing part 42 is pressed against the outer peripheral surface of the rudder blade support tube 2, the sealing part 42 is in a state of elastic deformation, and always has a tendency to press against the outer peripheral surface of the rudder blade support tube 2 , under the action of the elastic deformation force of the sealing portion 42 itself, the sealing portion 42 can always be pressed against the outer peripheral surface of the rudder blade support tube 2, and at the same time, under the action of the elastic deformation force, the sealing body portion 41 can always be in contact with the outer peripheral surface of the rudder blade support tube 2
  • the bottom wall of the first sealing groove is tightly attached to ensure a stable sealing effect, which can adapt to frequent changes in working conditions and prevent the seal from failing due to excessive fatigue.
  • the rudder sealing structure further includes a plurality of first bolts 6 evenly distributed along the circumferential direction of the rudder blade support pipe 2, and the first bolts 6 pass through the mounting seat plate 3 and are screwed to the top of the rudder blade bearing 1 ; Multiple first bolts 6 are located on the first circle, and the second sealing ring 5 is located inside the first circle.
  • the mounting seat plate 3 can be stably fixed to the rudder blade bearing 1 by a plurality of first bolts 6 .
  • disposing the first sealing ring 4 inside the first circumference can reduce the radius of the second sealing ring 5 , thereby reducing the area to be sealed by the second sealing ring 5 and ensuring a stable sealing effect.
  • the rudder sealing structure also includes a sealing seat 7 fixed on the top of the mounting seat plate 3 and sheathed on the rudder blade support tube 2, the inner peripheral surface of the sealing seat 7 is provided with a third installation groove, and the sealing seat 7 The bottom surface of the bottom surface is provided with a fourth sealing groove; the rudder sealing structure also includes a third sealing ring 8 arranged in the third installation groove and a fourth sealing ring 9 arranged in the fourth sealing groove, and the third sealing ring 8 is set to be sealed, connected and sealed.
  • the seat 7 and the rudder blade support tube 2, and the fourth sealing ring 9 are arranged to seal and connect the mounting seat plate 3 and the sealing seat 7.
  • the third seal ring 8 is respectively attached to the outer peripheral surface of the seal seat 7 and the rudder blade support tube 2, and can be carried out between the seal seat 7 and the rudder blade support tube 2 along the axial direction of the rudder blade support tube 2.
  • the fourth sealing ring 9 is respectively attached to the top surface of the sealing seat 7 and the installation seat plate 3, and can seal between the seal seat 7 and the installation seat plate 3 along the radial direction of the rudder blade support tube 2.
  • the third sealing ring 8 and the fourth sealing ring 9 are further provided to form a two-stage sealing, further ensuring the sealing performance.
  • the third sealing ring 8 includes a gray ring
  • the fourth sealing ring 9 is preferably an O-ring.
  • there are multiple fourth sealing rings 9 the outer diameters of the plurality of fourth sealing rings 9 are different, and they are nested concentrically according to the size of the outer diameters.
  • the present embodiment exemplarily gives a solution that the number of the fourth sealing ring 9 is two.
  • the number of the fourth sealing grooves is also two, which are respectively provided corresponding to the two fourth sealing rings 9 .
  • the rudder sealing structure further includes a plurality of second bolts 10 uniformly distributed along the circumferential direction of the rudder blade support tube 2, the second bolts 10 pass through the sealing seat 7 and are screwed to the top of the mounting seat plate 3; A plurality of second bolts 10 are located on a second circumference, the diameter of the second circumference is larger than the diameter of the first circumference.
  • the sealing seat 7 can be stably fixed to the mounting seat plate 3 by a plurality of second bolts 10 .
  • one of the two fourth sealing grooves is located between the first circumference and the second circumference, and the other is located inside the first circumference.
  • the rudder sealing structure also includes a sealing gland 11 fixed on the top of the sealing seat 7 and sheathed on the rudder blade support tube 2, the inner peripheral surface of the sealing gland 11 is provided with a fifth sealing groove; the rudder sealing The structure also includes a fifth sealing ring 12 arranged in the fifth sealing groove, and the fifth sealing ring 12 is used for sealing the sealing gland 11 and the rudder blade support tube 2 .
  • the fifth sealing ring 12 is bonded to the sealing gland 11 and the rudder blade support tube 2 respectively, and can be used for anti-sediment, which can reduce the damage of the first sealing ring 4 and the third sealing ring 8 to the first sealing ring 4 and the third sealing ring 8 , under the premise of ensuring a stable anti-sediment effect, the service life of the first sealing ring 4 and the third sealing ring 8 is guaranteed.
  • the fifth sealing ring 12 includes a main sealing ring 121 and a first auxiliary sealing ring 122, wherein the first auxiliary sealing ring 122 is sleeved on the main sealing ring 121, and the cross section of the main sealing ring 121 is Z-shaped.
  • the main sealing ring 121 includes a contact portion 1211, a connection portion 1212 and a support portion 1213 connected in sequence, an angle is formed between the contact portion 1211 and the connection portion 1212, and an angle is formed between the connection portion 1212 and the support portion 1213, wherein the contact portion 1211 is attached to the outer peripheral surface of the rudder blade support tube 2, the first secondary sealing ring 122 is in contact with the connecting part 1212, and is in contact with the groove wall of the fifth sealing groove, the first secondary sealing ring 122 is in a compressed state and can be squeezed Press the connection part 1212 so that the connection part 1212 drives the contact part 1211 to bias the rudder blade support tube 2 to achieve sealing.
  • the rudder sealing structure further includes a plurality of third bolts 13 uniformly distributed along the circumferential direction of the rudder blade support tube 2, and the third bolts 13 pass through the sealing gland 11 and are screwed to the top of the sealing seat 7; A plurality of third bolts 13 are located on the third circumference, and the sealing gland 11 can be stably fixed to the sealing seat 7 through the plurality of third bolts 13 .
  • the size of the third circumference is equal to that of the first circumference.
  • the rudder sealing structure further includes a seal ring seat 14 sleeved on the rudder blade support tube 2, the seal ring seat 14 is located in the annular groove formed by the seal seat 7 and the sealing gland 11, and the inside of the seal ring seat 14
  • the peripheral surface is provided with a sixth sealing groove, and the outer peripheral surface of the sealing ring seat 14 is provided with a seventh sealing groove.
  • the rudder sealing structure also includes a sixth sealing ring 15 arranged in the sixth sealing groove and a seventh sealing ring 16 arranged in the seventh sealing groove, and the sixth sealing ring 15 is configured to sealingly connect the sealing ring seat 14 and the rudder blade support tube 2 , the seventh sealing ring 16 is configured to sealingly connect the sealing ring seat 14 and the sealing seat 7 .
  • the sixth sealing ring 15 is attached to the outer peripheral surface of the sealing ring seat 14 and the rudder blade support tube 2 respectively, and can be connected between the sealing ring seat 14 and the rudder blade support tube 2 along the axial direction of the rudder blade support tube 2 . 2 to be sealed.
  • the seventh sealing ring 16 is attached to the bottom of the sealing ring seat 14 and the top of the sealing ring seat 7 respectively, and can seal between the sealing ring seat 7 and the sealing ring seat 14 along the radial direction of the rudder blade support tube 2 .
  • four levels of protection can be achieved in the axial direction of the rudder blade support tube 2 through the first sealing ring 4 , the third sealing ring 8 , the sixth sealing ring 15 and the fifth sealing ring 12 to ensure a stable protection effect.
  • the sealing gland 11 has a protruding part
  • the sealing seat 7 has an annular groove with an L-shaped slot in cross section
  • the protruding part is inserted into the slot, and protrudes The part can abut against the sealing ring seat 14 to ensure the stable position of the sealing ring seat 14.
  • the sixth sealing ring 15 includes a gray ring.
  • the third sealing ring 8 and the sixth sealing ring 15 have the same structure.
  • the sixth sealing ring 15 also includes a second secondary sealing ring with an O-shaped cross section. The auxiliary sealing ring is covered with a gray ring and the two contact each other, and the gray ring and the second auxiliary sealing ring are respectively in a compressed state.
  • the present embodiment also provides a ship rudder, comprising a rudder blade, a rudder blade support tube 2 and a rudder blade bearing 1, the rudder blade is installed on the rudder blade bearing 1, the rudder blade bearing 1 is sleeved on the rudder blade support tube 2, and the rudder blade
  • the rudder sealing structure in the above scheme is installed on the bearing 1 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

一种舵密封结构及船舵，舵密封结构包括安装座板（3）、第一密封圈（4）和第二密封圈（5），安装座板（3）的内周面设有第一安装槽，安装座板（3）的底面设有第二安装槽；第一密封圈（4）设置于第一安装槽，且设置为密封连接安装座板（3）；第二密封圈（5）设置于第二安装槽，且设置为密封连接安装座板（3），第一密封圈（4）包括密封本体部（41）和密封部（42），密封本体部（41）设置于第一安装槽内且分别与第一安装槽的底壁和侧壁贴合，密封部（42）凸设于密封本体部（41）。该舵密封结构能够在船舶航行转舵操作时，对舵叶和舵叶支撑管之间的转动间隙进行了有效密封。

Description

舵密封结构及船舵 技术领域
本申请涉及船舶技术领域，例如涉及一种舵密封结构及船舵。
背景技术
船舶在进出港和海上航行时，需要不断的改变航向，舵叶安装在船舶的底部，舵叶进行左右摆动从而实现船舶的转向，因此，舵对船舶的作用非常重要，是船舶的重要设备之一。
相关技术中，舵叶支撑管上套设有舵叶和压环，压环位于舵叶一端限制舵叶的轴向位置，且压环和舵叶支撑管之间沿径向设置O型密封圈作为动密封，密封型式单一，无法适应工况频繁变化的情况，易造成密封圈过渡疲劳，使密封圈变形和磨损，同时，由于海水普遍泥砂含量大，易导致O型密封圈磨损严重，使用寿命大大降低，导致密封失效，密封效果不理想，使得海水泄漏量大，海水进入舵叶和舵机舱，对船舶的航行安全和设备的寿命造成较大的影响。
发明内容
本申请提供了一种舵密封结构及船舵，能够解决相关技术中舵叶和舵杆之间的密封结构容易失效的问题，提高了船舶的寿命和安全性。
一实施例提供了一种舵密封结构，用于密封舵叶轴承和舵叶支撑管，所述舵叶轴承用于支撑舵叶，舵密封结构包括：安装座板，所述安装座板的内周面设有第一安装槽，所述安装座板的底面设有第二安装槽；第一密封圈，设置为密封连接所述安装座板，所述第一密封圈包括设置于所述第一安装槽内的密封本体部和凸设于所述密封本体部上的密封部，所述密封本体部与所述第一安装槽的槽壁贴合；及第二密封圈，设置于所述第二安装槽内。
一实施例还提供了一种船舵，包括舵叶、舵叶支撑管和舵叶轴承，所述舵叶安装于所述舵叶轴承，所述舵叶轴承套设于所述舵叶支撑管，所述舵叶轴承上安装有上述的舵密封结构。
附图说明
图1为本申请一实施例中舵密封结构的剖视图；
图2为图1中A处的局部放大图；
图3为本申请一实施例中第五密封圈的剖视图。
图中：
1、舵叶轴承；2、舵叶支撑管；3、安装座板；4、第一密封圈；41、本体部；42、密封部；5、第二密封圈；6、第一螺栓；7、密封座；8、第三密封圈；9、第四密封圈；10、第二螺栓；11、密封压盖；12、第五密封圈；121、主密封圈；1211、接触部；1212、连接部；1213、支撑部；122、第一副密封圈；13、第三螺栓；14、密封圈座；15、第六密封圈；16、第七密封圈。
具体实施方式
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、仅用于描述目的，而不能理解为指示或暗示相对重要性。其中，术语“第一位置”和“第二位置”为两个不同的位置，而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
相关技术中，船舶上的舵叶与舵叶支撑管之间的密封结构通常采用O型密封圈进行动密封，密封型式单一，无法适应工况频繁变化的情况，易造成密封圈过渡疲劳，使密封圈变形和磨损，同时，由于海水普遍泥砂含量大，易导致O型 密封圈磨损严重，使用寿命大大降低，导致密封失效，密封效果不理想，海水泄漏量大，导致海水进入舵叶和舵机舱，对船舶的航行安全和设备的寿命造成较大的影响。
如图1和图2所示，本实施例提供一种舵密封结构，该舵密封结构用于密封舵叶轴承1和舵叶支撑管2。
本实施例中，舵密封结构包括安装座板3、第一密封圈4和第二密封圈5。其中，安装座板3套设于舵叶支撑管2上且固定于舵叶轴承1的顶部，安装座板3的内周面设有第一安装槽，安装座板3的底面设有第二安装槽；第一密封圈4设置于第一安装槽内，且设置为密封连接安装座板3和舵叶支撑管2；第二密封圈5设置于第二安装槽，且设置为密封连接安装座板3和舵叶轴承1。
在一实施例中，舵叶轴承1套设于舵叶支撑管2，且舵叶轴承1设置为安装舵叶，通过舵叶轴承1使舵叶相对舵叶支撑管2转动，舵叶和舵叶支撑管2间隙配合。其中，上下方向如图1中ab方向所示，第一密封圈4分别和安装座板3的内表面以及舵叶支撑管2的外表面贴合，可沿舵叶支撑管2的轴向对舵叶轴承1与舵叶支撑管2之间的间隙进行密封，避免水及泥沙等杂物从舵叶轴承1和舵叶支撑管2之间的缝隙进入至舵叶和舵叶支撑管2之间。第二密封圈5分别与安装板的下表面以及舵叶轴承1的上表面贴合，可沿舵叶支撑管2的径向对舵叶轴承1与舵叶支撑管2之间的间隙进行密封，避免水及泥沙等杂物从舵叶轴承1和安装座板3之间的缝隙进入至舵叶和舵叶支撑管2之间。以保证船舶航行转舵操作时，能对舵叶和舵叶支撑管2之间的转动间隙进行有效密封。
在一实施例中，第一密封圈4包括密封本体部41和密封部42，其中，密封本体部41设置于第一密封槽内且分别与第一密封槽的底壁和侧壁贴合，密封部42凸设于密封本体部41且弹性抵紧于舵叶支撑管2的外周面，如此可保证密封部42和舵叶支撑管2紧密接触，进而防止密封失效。
在一实施例中，第一密封圈4和第二密封圈5分别由弹性材质制成。第一密封圈4采用异形件，第二密封圈5可采用O形圈。其中，第一密封圈4的材质具体可为聚醚型橡胶材质，本实施例中密封部42的轴截面呈条状且相对舵叶支撑管2的轴线倾斜设置，且密封部42的第一端和密封本体部41连接，密封部42的第二端抵紧于舵叶支撑管2的外周面，密封部42处于弹性形变状态，且始终具有抵压舵叶支撑管2的外周面的趋势，在密封部42自身弹性形变力的作用下，可使密封部42始终抵紧于舵叶支撑管2的外周面，同时，在弹性形变力的作用下，也能使 密封本体部41始终和第一密封槽的底壁贴紧，以保证密封效果稳定，能够适应工况频繁变化的情况，防止密封件过渡疲劳而失效。
在一实施例中，舵密封结构还包括多个沿舵叶支撑管2的圆周方向均匀分布的第一螺栓6，第一螺栓6穿过安装座板3并与舵叶轴承1的顶部螺纹连接；多个第一螺栓6位于第一圆周上，第二密封圈5位于第一圆周的内侧。通过多个第一螺栓6可将安装座板3稳定地固定于舵叶轴承1。并且，将第一密封圈4设置于第一圆周的内侧，可减小第二密封圈5的半径，进而减小第二密封圈5需要密封的面积，保证密封效果稳定。
在一实施例中，舵密封结构还包括固定于安装座板3的顶部且套设于舵叶支撑管2的密封座7，密封座7的内周面设有第三安装槽，密封座7的底面设有第四密封槽；舵密封结构还包括设置于第三安装槽的第三密封圈8和设置于第四密封槽的第四密封圈9，第三密封圈8设置为密封连接密封座7和舵叶支撑管2，第四密封圈9设置为密封连接安装座板3和密封座7。本实施例中，第三密封圈8分别和密封座7及舵叶支撑管2的外周面贴合，可沿舵叶支撑管2的轴向在密封座7与舵叶支撑管2之间进行密封，第四密封圈9分别与密封座7和安装座板3的顶面贴合，可沿舵叶支撑管2的径向在密封座7与安装座板3之间进行密封。在第一密封圈4和第二密封圈5的基础上进一步设置第三密封圈8和第四密封圈9能够形成两级密封，进一步保证密封性能。
本实施例中，第三密封圈8包括格莱圈，第四密封圈9优选为O形圈。在一实施例中，第四密封圈9的数量为多个，多个第四密封圈9的外径各不相同，且按照外径的大小同圆心嵌套。其中，本实施例中示例性地给出了第四密封圈9的数量为两个的方案。在一实施例中，第四密封槽的数量也为两个且分别与两个第四密封圈9对应设置。
在一实施例中，舵密封结构还包括多个沿舵叶支撑管2的圆周方向均匀分布的第二螺栓10，第二螺栓10穿过密封座7并与安装座板3的顶部螺纹连接；多个第二螺栓10位于第二圆周上，第二圆周的直径大于第一圆周的直径。通过多个第二螺栓10可将密封座7稳定地固定于安装座板3。本实施例中，两个第四密封槽中的一个位于第一圆周和第二圆周之间，另一个位于第一圆周的内侧。
在一实施例中，舵密封结构还包括固定于密封座7的顶部且套设于舵叶支撑管2的密封压盖11，密封压盖11的内周面设有第五密封槽；舵密封结构还包括设置于第五密封槽内的第五密封圈12，第五密封圈12用于密封密封压盖11和舵叶 支撑管2。本实施例中，第五密封圈12分别与密封压盖11以及舵叶支撑管2贴合，可用于防泥沙，如此可降低泥沙对第一密封圈4和第三密封圈8的损伤，在保证防泥沙效果稳定的前提下，保障第一密封圈4和第三密封圈8的使用寿命。
如图3所示，第五密封圈12包括主密封圈121和第一副密封圈122，其中，第一副密封圈122套设于主密封圈121，主密封圈121的截面呈Z形，主密封圈121包括依次连接的接触部1211、连接部1212和支撑部1213，接触部1211和连接部1212之间具有夹角，连接部1212和支撑部1213之间具有夹角，其中，接触部1211和舵叶支撑管2的外周面贴合，第一副密封圈122和连接部1212抵接，且和第五密封槽的槽壁抵接，第一副密封圈122处于压缩状态并可挤压连接部1212，以使连接部1212带动接触部1211向舵叶支撑管2偏压，实现密封。
在一实施例中，舵密封结构还包括多个沿舵叶支撑管2的圆周方向均匀分布的第三螺栓13，第三螺栓13穿过密封压盖11并与密封座7的顶部螺纹连接；多个第三螺栓13位于第三圆周上，通过多个第三螺栓13可将密封压盖11稳定地固定于密封座7。在一实施例中，第三圆周和第一圆周的尺寸相等。
在一实施例中，舵密封结构还包括套设于舵叶支撑管2的密封圈座14，密封圈座14位于密封座7和密封压盖11形成的环形槽内，密封圈座14的内周面设有第六密封槽，密封圈座14的外周面设有第七密封槽。舵密封结构还包括设置于第六密封槽的第六密封圈15和设置于第七密封槽的第七密封圈16，第六密封圈15设置为密封连接密封圈座14和舵叶支撑管2，第七密封圈16设置为密封连接密封圈座14和密封座7。在一实施例中，第六密封圈15分别与接密封圈座14和舵叶支撑管2的外周面贴合，可沿舵叶支撑管2的轴向在密封圈座14与舵叶支撑管2之间进行密封。第七密封圈16分别与密封圈座14的底部和密封座7的顶部贴合，可沿舵叶支撑管2的径向在密封座7与密封圈座14之间进行密封。如此设置，可通过第一密封圈4、第三密封圈8、第六密封圈15和第五密封圈12在舵叶支撑管2的轴向上实现四级防护，以保证防护效果稳定。
在一实施例中，为了保证密封圈座14的位置稳定，密封压盖11的具有突出部，密封座7具有截面呈L形的插槽的环形槽，突出部插接于插槽，且突出部能和密封圈座14抵接，以保证密封圈座14的位置稳定。
在一实施例中，第六密封圈15包括格莱圈。本实施例中，第三密封圈8和第六密封圈15的结构相同，以第六密封圈15为例，第六密封圈15还包括一个截面呈O形的第二副密封圈，第二副密封圈套设格莱圈且两者抵接，格莱圈和第二副 密封圈分别呈压缩状态。
本实施例还提供一种船舵，包括舵叶、舵叶支撑管2和舵叶轴承1，舵叶安装于舵叶轴承1上，舵叶轴承1套设于舵叶支撑管2，舵叶轴承1上安装有上述方案中的舵密封结构。

Claims (10)

  1. 一种舵密封结构，包括：
    安装座板(3)，所述安装座板(3)的内周面设有第一安装槽，所述安装座板(3)的底面设有第二安装槽；
    第一密封圈(4)，设置为密封连接所述安装座板(3)，所述第一密封圈(4)包括设置于所述第一安装槽内的密封本体部(41)和凸设于所述密封本体部(41)上的密封部(42)，所述密封本体部(41)与所述第一安装槽的槽壁贴合；及
    第二密封圈(5)，设置于所述第二安装槽内。
  2. 根据权利要求1所述的舵密封结构，还包括第三密封圈(8)、第四密封圈(9)及固定于所述安装座板(3)的顶部的密封座(7)，所述密封座(7)的内周面设有第三安装槽，所述密封座(7)的底面设有第四密封槽；
    所述第三密封圈(8)设置于所述第三安装槽内，所述第四密封圈(9)设置于所述第四密封槽内。
  3. 根据权利要求2所述的舵密封结构，还包括第五密封圈(12)及固定于所述密封座(7)的顶部的密封压盖(11)，所述密封压盖(11)的内周面设有第五密封槽；所述第五密封圈(12)设置于所述第五密封槽内，所述第五密封圈(12)设置为密封所述密封压盖(11)。
  4. 根据权利要求3所述的舵密封结构，还包括第六密封圈(15)、第七密封圈(16)及套设于所述舵叶支撑管(2)上的密封圈座(14)，所述密封圈座(14)位于所述密封座(7)和所述密封压盖(11)形成的环形槽内，所述密封圈座(14)的内周面设有第六密封槽，所述密封圈座(14)的外周面设有第七密封槽；
    所述第六密封圈(15)设置于所述第六密封槽内和所述第七密封圈(16)设置于所述第七密封槽内，所述第六密封圈(15)设置为密封连接所述密封圈座(14)，所述第七密封圈(16)设置为密封连接所述密封圈座(14)和所述密封座(7)。
  5. 根据权利要求3或4所述的舵密封结构，还包括多个沿所述舵叶支撑管(2)的圆周方向均匀分布的第一螺栓(6)，所述第一螺栓(6)设置为穿过所述安装座板(3)并与所述舵叶轴承(1)的顶部螺纹连接；多个所述第一螺栓(6)位于第一圆周上，所述第二密封圈(5)位于所述第一圆周的内侧。
  6. 根据权利要求5所述的舵密封结构，其中，所述舵密封结构还包括多个沿所述舵叶支撑管(2)的圆周方向均匀分布的第二螺栓(10)，所述第二螺栓(10)穿过所述密封座(7)并与所述安装座板(3)的顶部螺纹连接；
    多个所述第二螺栓(10)位于第二圆周上，所述第二圆周的直径大于所述第一圆周的直径。
  7. 根据权利要求6所述的舵密封结构，其中，所述第四密封圈(9)的数量为两个，两个所述第四密封圈(9)中的一个位于所述第一圆周和所述第二圆周之间，另一个位于所述第一圆周的内侧。
  8. 根据权利要求4所述的舵密封结构，还包括多个沿所述舵叶支撑管(2)的圆周方向均匀分布的第三螺栓(13)，所述第三螺栓(13)设置为穿过所述密封压盖(11)并与所述密封座(7)的顶部螺纹连接；
    多个所述第三螺栓(13)位于第三圆周上，所述第七密封圈(16)位于所述第三圆周的内侧。
  9. 根据权利要求4所述的舵密封结构，其中，所述第三密封圈(8)和所述第六密封圈(15)分别包括格莱圈。
  10. 一种船舵，包括舵叶、舵叶支撑管(2)和舵叶轴承(1)，所述舵叶安装于所述舵叶轴承(1)，所述舵叶轴承(1)套设于所述舵叶支撑管(2)，所述舵叶轴承(1)上安装有权利要求1-9任一项所述的舵密封结构。
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CN104154239A (zh) * 2014-08-04 2014-11-19 东台船用配件有限公司 舵杆密封装置
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CN212203115U (zh) * 2020-05-27 2020-12-22 南京航海仪器二厂有限公司 舵轴密封装置
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