Installation device and installation method of sealing assembly

Abstract

The invention provides a mounting device and a mounting method of a sealing assembly, and belongs to the technical field of mechanical sealing. The mounting device comprises an operating part and a positioning ring, the operating part is located on one side of the positioning ring in the axis direction of the positioning ring and connected with the positioning ring, and the operating part is used for being inserted into a gap between the fixed base and the rotating shaft pipe; an annular installation groove is formed in the side, away from the operation piece, of the positioning ring and used for containing the lip-shaped sealing ring. The mounting quality of the sealing assembly can be improved, and the sealing effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical seals, and in particular relates to an installation device and an installation method of a sealing assembly. Background Art

[0002] In a pod thruster, the slewing unit includes a fixed base and a slewing shaft tube. The slewing shaft tube is partially located in the fixed base. The fixed base is a fixed part connected to the hull. When the pod thruster is running, the slewing shaft tube will rotate relative to the fixed base. Since the lower part of the fixed base is immersed in seawater, in order to prevent seawater from entering the interior of the slewing unit, the slewing shaft tube and the fixed base are sealed by a sealing assembly. Among them, the sealing assembly includes a plurality of lip seals and a plurality of intermediate spacer rings. Each lip seal is located between two adjacent intermediate spacer rings. In order to prevent the oil inside the slewing unit from leaking and to prevent external water from entering the slewing unit. The lip of the lip seal close to a part of the interior of the slewing unit faces the interior of the slewing unit (that is, Figure 2 The lip of the sealing ring near the lower part of the fixed base faces the outside of the rotary unit (that is, Figure 2 in the downward direction).

[0003] In the related art, the installation method of the above-mentioned sealing assembly is usually to install the sealing assembly along the direction from the outside to the inside of the rotary unit (that is, Figure 2 The lip seal ring is installed in the fixed base in sequence from bottom to top, and then the rotary shaft tube is pushed upward from the bottom into the inner hole of the fixed base.

[0004] However, since the lip of the lower lip seal is downward, opposite to the insertion direction of the rotary shaft tube, the lip edge of the lip seal is easily torn during the upward lifting of the rotary shaft tube, and it is not easy to detect, thus affecting the sealing effect. Summary of the invention

[0005] The embodiment of the present disclosure provides a sealing assembly installation device and installation method, which can improve the installation quality of the sealing assembly and enhance the sealing effect. The technical solution is as follows:

[0006] An embodiment of the present disclosure provides an installation device for a sealing assembly, wherein the sealing assembly is installed between a fixed base and a rotating shaft tube in a pod thruster, and the sealing assembly includes at least one lip sealing ring; the installation device includes an operating member and a positioning ring, and along the axial direction of the positioning ring, the operating member is located on one side of the positioning ring and is connected to the positioning ring, and the operating member is used to be inserted into the gap between the fixed base and the rotating shaft tube; the positioning ring has an annular installation groove on a side away from the operating member, and the installation groove is used to accommodate the lip sealing ring, and the groove wall of the installation groove is used to fit with the lip edge of the lip sealing ring.

[0007] In yet another implementation of the present disclosure, the groove wall of the mounting groove includes a first tapered surface, and the outer diameter of the first tapered surface gradually decreases in a direction from the operating member to the positioning ring.

[0008] In another implementation of the present disclosure, the groove wall of the mounting groove also includes a second conical surface, which is located on the side of the first conical surface away from the operating member and is connected to the first conical surface. The outer diameter of the second conical surface gradually increases from the operating member to the positioning ring.

[0009] In another embodiment of the present disclosure, the outer peripheral wall of the positioning ring has a plurality of demolding grooves arranged at intervals along its own circumference, the demolding grooves are located on the side of the installation groove facing the operating member, and the demolding grooves extend along the circumference of the positioning ring.

[0010] In yet another implementation of the present disclosure, the operating member includes a plurality of connecting rods, the plurality of connecting rods are arranged at intervals along the circumference of the positioning ring, and each of the plurality of connecting rods is connected to the positioning ring.

[0011] In another embodiment of the present disclosure, a method for installing a sealing assembly is also provided, wherein the sealing assembly includes at least one lip seal ring, and the installation method includes: installing the lip seal ring in a mounting groove on a positioning ring of a mounting device, wherein the mounting device is the mounting device described above; placing the positioning ring equipped with the lip seal ring in a gap between a fixed base and a rotating shaft tube through an operating member of the mounting device; and controlling the operating member so that the lip seal ring is detached from the positioning ring.

[0012] In another implementation of the present disclosure, the step of installing the lip seal ring in the mounting groove on the positioning ring of the mounting device comprises: expanding the lip edge of the lip seal ring radially outward so that the lip edge fits against the groove wall of the mounting groove, the groove wall of the mounting groove comprises a first conical surface and a second conical surface, the second conical surface is located on the side of the first conical surface away from the operating member, and the outer diameter of the second conical surface gradually increases from the operating member to the positioning ring, and the outer diameter of the first conical surface gradually decreases, and the maximum outer diameters of the first conical surface and the second conical surface are both larger than the inner diameter corresponding to the lip edge of the lip seal ring.

[0013] In another implementation of the present disclosure, controlling the operating member so that the lip seal ring is disengaged from the positioning ring includes: rotating the operating member so that the positioning ring can rotate relative to the fixed base and the rotating shaft tube through the demolding grooves in its outer circumference, the demolding grooves being multiple, and the multiple demolding grooves are circumferentially spaced apart along the outer circumference of the positioning ring, and the demolding grooves extend along the circumference of the positioning ring; pulling the operating member to separate the positioning ring from the lip seal ring.

[0014] In another implementation of the present disclosure, before the positioning ring equipped with the lip seal ring is placed in the gap between the fixed base and the rotating shaft tube through the operating part of the installation device, the installation method also includes: assembling the fixed base and the rotating shaft tube so that the rotating shaft tube is coaxial with the fixed base and the width of the gap is the same in the circumferential direction of the rotating shaft tube.

[0015] In another embodiment of the present disclosure, the sealing assembly further includes a middle spacer ring, and before or after each lip seal ring is installed, the installation method further includes: installing the middle spacer ring in the gap between the fixed base and the rotating shaft tube.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] When the sealing assembly is installed by the installation device provided by the embodiment of the present disclosure, the lip seal ring to be installed can be placed in the installation groove in the positioning ring, so that the lip seal ring can be assembled on the installation device, and the lip edge of the lip seal ring can be protected at the same time. Then, since the operating member is used to be inserted into the gap between the fixed base and the rotating shaft tube, the operating member can be controlled so that the positioning ring and the lip seal ring on the positioning ring can be moved between the fixed base and the rotating shaft tube, so that the lip seal ring can be moved between the fixed base and the rotating shaft tube by the operating member, and then the operating member is controlled so that the lip seal ring can be separated from the positioning ring, and finally, the operating member is removed from between the fixed base and the rotating shaft tube, and the lip seal ring can be installed between the fixed base and the rotating shaft tube. In addition, since the operating member and the installation groove are respectively located on opposite sides of the positioning ring, during installation, the lip seal ring can be separated from the installation groove by gently twisting or shaking the operating member, making the installation process simple and quick.

[0018] Furthermore, in order to make the lip of the lip seal ring face upward or downward, during installation, it is only necessary to pre-adjust the lip direction of the lip seal ring when the lip seal ring is placed in the installation groove.

[0019] It can be seen that the above installation device can improve the installation effect of the lip seal ring and avoid damage to the lip seal ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the rotary unit in the pod thruster;

[0022] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 A schematic diagram of the structure of the installation device provided in the embodiment of the present disclosure;

[0024] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0025] Figure 5 This is a schematic diagram of the installation of a lip seal ring with a downward lip in a positioning ring;

[0026] Figure 6This is a schematic diagram of the installation of a lip seal ring with the lip facing upward in a positioning ring;

[0027] Figure 7 It is a schematic diagram of installing a lip seal ring with a downward lip in another type of locating ring;

[0028] Figure 8 It is a schematic diagram of installing a lip seal ring with the lip upward in another positioning ring;

[0029] Fig. 9 for Figure 3 A top view of

[0030] Fig.10 A flow chart of a method for installing a sealing assembly provided in an embodiment of the present disclosure;

[0031] Fig.11 A schematic diagram of installing a lip seal ring in the installation device provided in an embodiment of the present disclosure.

[0032] The symbols in the figure mean the following:

[0033] 100, sealing assembly; 101, lip seal ring; 1011, lip edge; 102, middle spacer ring; 1020, oil hole;

[0034] 200, mounting device; 201, operating member; 2011, connecting rod; 202, positioning ring; 2020, mounting groove; 2021, first tapered surface; 2022, second tapered surface; 2023, demoulding groove;

[0035] 300, rotary unit; 301, fixed base; 302, rotary shaft tube; 303, sealing groove; 304, equal high-speed rail. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the structure of the rotary unit in the pod thruster. Figure 1 In the pod propulsion device, the slewing unit 300 includes a fixed base 301 and a slewing shaft tube 302. The slewing shaft tube 302 is partially located in the fixed base 301.

[0038] The fixed base 301 and the rotating shaft tube 302 are a pair of parts that move relatively to each other. The fixed base 301 is a fixed part connected to the hull, and the rotating shaft tube 302 is a moving part.

[0039] When the pod propeller is running, the rotary shaft tube 302 rotates relative to the fixed base 301. Since the bottom of the fixed base 301 is immersed in seawater, in order to prevent seawater from entering the interior of the rotary unit 300, the rotary shaft tube 302 and the fixed base 301 are sealed by the sealing assembly 100.

[0040] Figure 2 for Figure 1 The enlarged view of A in the middle, combined with Figure 2 In order to facilitate the installation of the sealing assembly 100 , an annular sealing groove 303 is provided in the side wall of the inner hole of the fixed base 301 , and the sealing assembly 100 is located in the sealing groove 303 .

[0041] The sealing assembly 100 includes a plurality of lip seal rings 101 and a plurality of intermediate spacer rings 102. Each lip seal ring 101 is located between two adjacent intermediate spacer rings 102.

[0042] In the disclosed embodiment, there are four lip seal rings 101 and five intermediate spacer rings 102 .

[0043] Each intermediate ring 102 has an oil hole 1020 along its radial direction, and both ends of the oil hole 1020 penetrate the inner wall and the outer wall of the intermediate ring 102. The oil hole 1020 is used to introduce lubricating grease outside the rotating shaft tube 302 to lubricate and cool the rotating shaft tube 302.

[0044] In order to prevent the oil inside the rotary unit 300 from leaking and to prevent the external water from entering the rotary unit 300. Figure 2 The lip edge 1011 of the lip seal ring 101 of the part of the lip seal ring 101 (the lip opening is upward, that is, toward the inside of the rotary unit 300), and the part close to the outside of the fixed base 301 (that is, Figure 2 The lip edge 1011 of the lip seal ring 101 is downward (the lip is downward, that is, toward the outside of the fixed base 301).

[0045] The embodiment of the present disclosure provides an installation device and an installation method of a sealing assembly, which are used to install the lip seal ring 101 in the aforementioned sealing assembly 100 in the sealing groove 303 between the fixed base 301 and the rotating shaft tube 302, so as to prevent the lip seal ring 101 from being damaged when installing the lip seal ring 101 as in the related art, thereby improving the installation effect of the sealing assembly.

[0046] Figure 3 A schematic diagram of the structure of the installation device provided in the embodiment of the present disclosure, combined with Figure 3 The mounting device 200 includes an operating member 201 and a positioning ring 202 .

[0047] Along the axis direction of the positioning ring 202, the operating member 201 is located on one side of the positioning ring 202 and is connected to the positioning ring 202. The operating member 201 is used to be inserted into the gap between the fixed base 301 and the rotary shaft tube 302.

[0048] Figure 4 for Figure 3 The enlarged view of B in the middle, combined with Figure 4 The side of the positioning ring 202 away from the operating member 201 has an annular mounting groove 2020, and the mounting groove 2020 is used to accommodate the lip seal ring 101. The groove wall of the mounting groove 2020 is used to fit with the lip edge 1011 of the lip seal ring 101.

[0049] When the sealing assembly 100 is installed using the installation device provided by the embodiment of the present disclosure, the lip seal 101 to be installed can be placed in the installation groove 2020 in the positioning ring 202, so that the lip seal 101 can be assembled on the installation device while protecting the lip edge 1011 of the lip seal 101. Next, since the operating member 201 is used to be inserted into the gap between the fixed base 301 and the rotating shaft tube 302, the operating member 201 can be controlled so that the positioning ring 202 together with the lip seal 101 on the positioning ring 202 can be moved between the fixed base 301 and the rotating shaft tube 302. In this way, the lip seal 101 can be moved between the fixed base 301 and the rotating shaft tube 302 by the operating member 201, and then the operating member 201 is controlled so that the lip seal 101 can be separated from the positioning ring 202. Finally, the operating member 201 is removed from between the fixed base 301 and the rotating shaft tube 302, and the lip seal 101 can be installed between the fixed base 301 and the rotating shaft tube 302. Furthermore, since the operating member 201 and the mounting groove 2020 are located on opposite sides of the positioning ring 202, during installation, the lip seal ring 101 can be separated from the mounting groove 2020 by only gently twisting or shaking the operating member 201, making the installation process simple and quick.

[0050] Furthermore, in order to make the lip of the lip seal ring 101 face upward or downward, during installation, it is only necessary to pre-adjust the lip direction of the lip seal ring 101 when the lip seal ring 101 is placed in the installation groove 2020 .

[0051] It can be seen that the above installation device can improve the installation effect of the lip seal ring 101 and avoid damage to the lip seal ring 101.

[0052] Continue to see Figure 4 Optionally, the groove wall of the mounting groove 2020 includes a first conical surface 2021 , and the outer diameter of the first conical surface 2021 gradually decreases from the operating member 201 to the positioning ring 202 .

[0053] In the above implementation, since the sealing assembly 100 in the rotary unit 300 includes multiple lip seals 101 with different lip directions, in order to facilitate the lip seal 101 with the lip facing downward to be assembled with the positioning ring 202 in the gap, the lip seal 101 can be quickly detached from the mounting groove 2020, the groove wall of the mounting groove 2020 is set to a first conical surface 2021. The contact area between the mounting groove 2020 and the lip edge 1011 of the lip seal 101 with the lip facing downward can be reduced by the first conical surface 2021, so that the mounting groove 2020 can assemble the lip seal 101 with the lip facing downward while facilitating the detachment of the lip seal 101 from the positioning ring 202.

[0054] Figure 5 This is a schematic diagram of the installation of a lip seal with the lip facing downward in a positioning ring. Figure 5 For example, when the lip seal ring 101 with the lip facing downward is required to be placed outside the positioning ring 202, the lip seal ring 101 can be squeezed first, so that the lip edge 1011 of the lip seal ring 101 expands outward along its own radial direction, the opening of the lip of the lip seal ring 101 becomes smaller, the lip seal ring 101 is sleeved outside the positioning ring 202, and the bottom of the lip seal ring 101 is located in the installation groove 2020, and the side wall of the lip edge 1011 of the lip seal ring 101 is tightly fitted with the outer wall of the end with the larger outer diameter of the first tapered surface 2021. In this way, the contact area between the positioning ring 202 and the lip edge 1011 of the lip seal ring 101 can be reduced by the tapered surface, so that the two are easy to separate.

[0055] Continue to see Figure 4 Optionally, the groove wall of the mounting groove 2020 also includes a second conical surface 2022, which is located on the side of the first conical surface 2021 away from the operating member 201 and is connected to the first conical surface 2021. From the operating member 201 to the positioning ring 202, the outer diameter of the second conical surface 2022 gradually increases.

[0056] The maximum outer diameters of the first tapered surface 2021 and the second tapered surface 2022 are both greater than the inner diameter corresponding to the lip edge 1011 of the lip seal ring 101 .

[0057] In the above implementation, since the sealing assembly 100 in the rotary unit 300 includes a plurality of lip seals 101 with different lip directions, in order to facilitate the lip seal 101 with the lip facing upwards to be assembled with the positioning ring 202 in the gap, the lip seal 101 can be quickly detached from the mounting groove 2020, the groove wall of the mounting groove 2020 is set as a second conical surface 2022. The contact area between the mounting groove 2020 and the lip edge 1011 of the lip seal 101 with the lip facing upwards can be reduced by the second conical surface 2022, so that the mounting groove 2020 can assemble the lip seal 101 with the lip facing upwards while facilitating the detachment of the lip seal 101 from the positioning ring 202.

[0058] Figure 6 This is a schematic diagram of the installation of a lip seal with the lip facing upward in a positioning ring. Figure 6 When the lip seal ring 101 with the lip facing upward is required to be placed outside the positioning ring 202, the lip seal ring 101 can be squeezed first, so that the lip edge 1011 of the lip seal ring 101 expands outward, the opening of the lip of the lip seal ring 101 becomes smaller, and the lip seal ring 101 is sleeved outside the positioning ring 202, and the side wall of the lip edge of the lip seal ring 101 is tightly fitted with the outer wall of the end with the larger outer diameter of the second tapered surface 2022. In this way, the contact area between the positioning ring 202 and the lip edge 1011 of the lip seal ring 101 can be reduced by the tapered surface, so that the two are easy to separate.

[0059] Figure 7 This is a schematic diagram of the installation of a lip seal with a downward lip in another type of locating ring. Figure 8 This is a schematic diagram of the installation of a lip seal with the lip facing upward in another type of locating ring. Figure 7 and Figure 8 In other examples, the first conical surface 2021 and the second conical surface 2022 may be respectively arranged in different positioning rings 202. That is, two positioning rings 202 are arranged, and the conical surface of the outer wall of one positioning ring 202 is the first conical surface 2021 (see Figure 7 ), another tapered surface of the outer wall of the positioning ring 202 is a second tapered surface 2022 (see Figure 8 In this way, the installation of the lip seal ring 101 with different lip directions can also be achieved.

[0060] Alternatively, the second conical surface 2022 is not provided, and only the first conical surface 2021 is provided on the side wall of the installation groove 2020, and the lip seal ring 101 with the lip facing downward is directly installed through the positioning ring 202, while the installation of the lip seal ring 101 with the lip facing upward can be directly operated manually. Because the lip direction of the lip seal ring 101 with the lip facing upward is along the installation direction (from top to bottom), the lip edge of the lip seal ring 101 will not be damaged.

[0061] Fig. 9 for Figure 3 A top view of Fig. 9 Optionally, the outer peripheral wall of the positioning ring 202 has a plurality of demoulding grooves 2023 arranged at intervals along the circumference thereof, the demoulding grooves 2023 are located on the side of the mounting groove 2020 facing the operating member 201, and the demoulding grooves 2023 extend along the circumference of the positioning ring 202. In other words, the demoulding grooves 2023 are located on the circumference corresponding to the maximum outer diameter of the positioning ring 202.

[0062] In the above implementation, the setting of the demolding groove 2023 can further reduce the contact area of ​​the gap between the positioning ring 202 and the fixed base 301 and the rotating shaft tube 302, thereby reducing the friction between the positioning ring 202 and the fixed base 301 and the rotating shaft tube 302, which is conducive to the separation of the positioning ring 202 from the fixed base 301 and the rotating shaft tube 302.

[0063] In other examples, the demolding groove 2023 may also be other structures, for example, a plurality of small holes are arranged at intervals on the outer wall of the positioning ring 202 or a plurality of balls are embedded on the outer periphery of the positioning ring 202, etc. As long as the friction between the positioning ring 202 and the fixed base 301 and the rotating shaft tube 302 can be reduced, the present disclosure does not impose any restrictions on this.

[0064] In the embodiment of the present disclosure, there are four demoulding grooves 2023, which are arc-shaped structures. The four demoulding grooves 2023 are evenly arranged on the outer circumference of the positioning ring 202 (that is, the outer circumference of the circle where the groove bottom of the installation groove 2020 is located).

[0065] The central angle β corresponding to the arc length of each demoulding groove 2023 along the circumference of the positioning ring 202 is not less than 10°. In this way, the arc length of the demoulding groove 2023 will not be too short, and the area occupied by the demoulding groove 2023 in the gap between the fixed base 301 and the rotating shaft tube 302 is increased, thereby reducing the contact area between the positioning ring 202 and the gap between the fixed base 301 and the rotating shaft tube 302, respectively, reducing the friction between the positioning ring 202 and the fixed base 301 and the rotating shaft tube 302, and facilitating the positioning ring 202 to separate from the gap between the fixed base 301 and the rotating shaft tube 302.

[0066] Exemplarily, the arc length of each demoulding groove 2023 along the circumference of the positioning ring 202 corresponds to a central angle β of 15°.

[0067] Optionally, the operating member 201 includes a plurality of connecting rods 2011 , which are arranged at intervals along the circumference of the positioning ring 202 , and each of the plurality of connecting rods 2011 is connected to the positioning ring 202 .

[0068] In the above implementation, the operating member 201 is configured as a plurality of connecting rods 2011 , and the positioning ring 202 can be operated by the plurality of connecting rods 2011 , so that the positioning ring 202 can be stably located in the gap between the fixed base 301 and the rotary shaft tube 302 .

[0069] Moreover, the operating member 201 is configured as a plurality of connecting rods 2011 , so that the operating member 201 can be easily located in the gap between the fixed base 301 and the rotating shaft tube 302 in the form of a rod, while being conveniently connected to the positioning ring 202 .

[0070] In other examples, the operating member 201 may also be other connecting members, such as a connecting string, etc. As long as the operating member 201 can be located in the gap between the fixed base 301 and the rotary shaft tube 302 and can be connected to the positioning ring 202, the present disclosure does not limit this.

[0071] In the embodiment of the present disclosure, there are four connecting rods 2011, and the four connecting rods 2011 are evenly arranged on the circumference of the positioning ring 202. In this way, it can be ensured that the positioning ring 202 can maintain balance under the connection of the connecting rods 2011.

[0072] The minimum angle α between each connecting rod 2011 and the adjacent demoulding groove 2023 is 30 degrees. In other words, the arc length between each demoulding groove 2023 and two adjacent connecting rods 2011 is the same.

[0073] The outer diameter of the positioning ring 202 is slightly smaller than the outer diameter of the installation lip seal ring 101 outside the fixed base 301, and is generally smaller by about 2 mm. The inner diameter of the positioning ring 202 is slightly larger than the outer diameter of the rotating shaft tube 302, and is generally about 3 mm. This ensures that the installation device can be smoothly placed in the gap between the fixed base 301 and the rotating shaft tube 302.

[0074] The positioning ring 202 is provided with screw holes for connecting the connecting rod 2011 .

[0075] After the lip seal 101 is installed on the positioning ring 202, the entire device is placed in the sealing groove 303 of the lip seal through the connecting rod 2011. After the lip seal 101 is installed in place, the positioning ring 202 is taken out. The positioning ring 202 is also provided with a demoulding groove 2023. When the installation device carries the lip seal 101 to the installation position, the lip seal is disengaged from the positioning ring 202 through the demoulding groove 2023, and then the installation device is taken out, and the lip seal 101 can be installed in the sealing groove 303. The first tapered surface 2021 and the second tapered surface 2022 on the positioning ring 202 are located at the fitting surface of the lip edge 1011, which can facilitate the smooth separation of the lip seal 101 and the positioning ring 202.

[0076] When the lip seal ring is installed using the installation device, the lip seal ring can be easily installed in the sealing groove 303. At the same time, during the installation process, the lip edge 1011 of the lip seal ring 101 will be well protected, avoiding damage to the lip edge 1011 during conventional installation.

[0077] On the other hand, the present disclosure further provides a method for installing a sealing assembly, which installs the sealing assembly in the gap between the fixed base 301 and the rotating shaft tube 302 through the aforementioned installation device.

[0078] Fig.10 A flowchart of a method for installing a sealing assembly provided in an embodiment of the present disclosure, combined with Fig.10 , the installation method includes:

[0079] S101: Install the lip seal in the mounting groove on the locating ring of the mounting device.

[0080] The installation device is the same as the installation device mentioned above and will not be described in detail here.

[0081] Fig.11 A schematic diagram of installing a lip seal ring on the installation device provided in the embodiment of the present disclosure, combined with Fig.11 During installation, the lip seal ring 101 is pre-assembled in the installation groove 2020 so that the lip seal ring 101 can be installed in the gap between the fixed base 301 and the rotating shaft tube 302 by controlling the operating member 201.

[0082] In this embodiment, during installation, the lip edge 1011 of the lip seal ring 101 can be expanded radially outwardly so that the lip edge 1011 fits against the groove wall of the installation groove 2020 .

[0083] That is to say, when the lip-shaped sealing ring 101 with its lip facing downward needs to be placed outside the positioning ring 202, the lip-shaped sealing ring 101 can be squeezed first so that the lip edge 1011 of the lip-shaped sealing ring 101 expands outward, the opening size of the lip of the lip-shaped sealing ring 101 becomes smaller, the lip-shaped sealing ring 101 is sleeved outside the positioning ring 202, and the bottom of the lip-shaped sealing ring 101 is located in the installation groove 2020, and the side wall of the lip edge of the lip-shaped sealing ring 101 is tightly fitted with the outer wall of the end with the larger outer diameter of the first conical surface 2021.

[0084] When the lip seal ring 101 with the lip opening facing upward is required to be placed outside the positioning ring 202, the lip seal ring 101 can be squeezed first, so that the lip edge 1011 of the lip seal ring 101 expands outward, the opening size of the lip opening of the lip seal ring 101 becomes smaller, and the lip seal ring 101 is sleeved outside the positioning ring 202, and the side wall of the lip edge of the lip seal ring 101 is tightly fitted with the outer wall of the end with the larger outer diameter of the second conical surface 2022

[0085] S102: The positioning ring equipped with the lip seal ring is placed in the gap between the fixed base and the rotating shaft tube through the operating part of the installation device.

[0086] Combination Fig.11 By moving the operating member 201 to the gap between the fixed base 301 and the rotating shaft tube 302 , the lip seal ring 101 can be moved to the gap between the fixed base 301 and the rotating shaft tube 302 .

[0087] S103: Control the operating member so that the lip seal ring is disengaged from the positioning ring.

[0088] Optionally, step S103 may be implemented in the following manner:

[0089] (1) Rotate the operating member so that the positioning ring can rotate relative to the fixed base and the rotating shaft tube through the demoulding groove in its outer circumference.

[0090] (2) Pull up the operating member to separate the positioning ring 202 from the lip seal.

[0091] In this way, the demolding groove 2023 can be used to reduce the contact area of ​​the gap between the positioning ring 202 and the fixed base 301 and the rotating shaft tube 302, thereby reducing the friction between the positioning ring 202 and the fixed base 301 and the rotating shaft tube 302, making it easier for the positioning ring 202 to separate from the fixed base 301 and the rotating shaft tube 302.

[0092] Optionally, before installing the lip seal ring (that is, in step S101), the installation method further includes:

[0093] The fixed base 301 and the rotating shaft tube 302 are assembled so that the rotating shaft tube 302 is coaxial with the fixed base 301 and the width of the gap is the same in the circumferential direction of the rotating shaft tube 302 .

[0094] Combination Fig.11 The fixed base 301 can be placed on the equal height iron 304, its upper plane can be leveled, and then the rotary shaft tube 302 can be placed into the inner hole of the fixed base 301 through the corresponding positioning tool. In addition, the rotary shaft tube 302 is adjusted to be coaxial with the fixed base 301 so that the size of the sealing groove 303 is uniform in the circumferential direction.

[0095] Optionally, after each lip seal is installed, the installation method further comprises:

[0096] Before or after installing the lip seal ring, install the middle spacer ring in the sealing groove, and the lip seal ring is located between two adjacent middle spacer rings.

[0097] Optionally, the installation method further includes:

[0098] After the sealing assembly is installed, use the upper pressing plate to press the sealing assembly as a whole.

[0099] In this way, the lip edge of the lip seal can be stretched and closely fit with the outer circle of the rotating shaft tube, thereby achieving a sealing effect.

[0100] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A sealing assembly installation device, characterized in that: The sealing assembly is installed between a fixed base (301) and a rotary shaft tube (302) in a pod propeller, and the sealing assembly (100) comprises at least one lip seal ring (101); The mounting device (200) comprises an operating member (201) and a positioning ring (202); along the axial direction of the positioning ring (202), the operating member (201) is located on one side of the positioning ring (202) and is connected to the positioning ring (202); the operating member (201) is used to be inserted into the gap between the fixed base (301) and the rotary shaft tube (302); The positioning ring (202) has an annular mounting groove (2020) on one side away from the operating member (201), the mounting groove (2020) is used to accommodate the lip seal ring (101), and the groove wall of the mounting groove (2020) is used to fit with the lip edge (1011) of the lip seal ring (101).

2. The mounting device according to claim 1, characterized in that: The groove wall of the installation groove (2020) comprises a first conical surface (2021), and the outer diameter of the first conical surface (2021) gradually decreases in the direction from the operating member (201) to the positioning ring (202).

3. The mounting device according to claim 2, characterized in that: The groove wall of the installation groove (2020) also includes a second conical surface (2022), which is located on a side of the first conical surface (2021) away from the operating member (201) and is connected to the first conical surface (2021), and the outer diameter of the second conical surface (2022) gradually increases in the direction from the operating member (201) to the positioning ring (202).

4. The mounting device according to any one of claims 1 to 3, characterized in that: The outer peripheral wall of the positioning ring (202) has a plurality of demoulding grooves (2023) arranged at intervals along its own circumference, the demoulding grooves (2023) are located on the side of the installation groove (2020) facing the operating member (201), and the demoulding grooves (2023) extend along the circumference of the positioning ring (202).

5. The mounting device according to any one of claims 1 to 3, characterized in that: The operating member (201) comprises a plurality of connecting rods (2011), the plurality of connecting rods (2011) being arranged at intervals along the circumference of the positioning ring (202), and each of the plurality of connecting rods (2011) is connected to the positioning ring (202).

6. A method for installing a sealing assembly, characterized in that: The sealing assembly includes at least one lip seal ring, and the installation method includes: Installing the lip seal ring in a mounting groove on a positioning ring of a mounting device, wherein the mounting device is the mounting device according to claim 1; By means of the operating member of the installation device, the positioning ring equipped with the lip seal ring is placed in the gap between the fixed base and the rotary shaft tube; The operating member is controlled so that the lip seal ring is separated from the positioning ring.

7. The installation method according to claim 6, characterized in that: The step of installing the lip seal ring in the installation groove on the positioning ring of the installation device comprises: The lip edge of the lip sealing ring is expanded radially outwardly so that the lip edge fits against the groove wall of the mounting groove. The groove wall of the mounting groove includes a first conical surface and a second conical surface. The second conical surface is located on the side of the first conical surface away from the operating member. From the operating member to the positioning ring, the outer diameter of the second conical surface gradually increases, and the outer diameter of the first conical surface gradually decreases. The maximum outer diameters of the first conical surface and the second conical surface are both greater than the inner diameter corresponding to the lip edge of the lip sealing ring.

8. The installation method according to claim 6, characterized in that: The step of controlling the operating member so that the lip seal ring is separated from the positioning ring comprises: Rotate the operating member so that the positioning ring can rotate relative to the fixed base and the rotary shaft tube through the demoulding grooves in its outer circumference, wherein the demoulding grooves are multiple, and the multiple demoulding grooves are arranged at intervals along the outer circumference of the positioning ring, and the demoulding grooves extend along the circumference of the positioning ring; The operating member is lifted to separate the positioning ring from the lip seal ring.

9. The installation method according to claim 6, characterized in that: Before placing the positioning ring equipped with the lip seal ring in the gap between the fixed base and the rotary shaft tube through the operating member of the installation device, the installation method further includes: The fixed base and the rotating shaft tube are assembled so that the rotating shaft tube is coaxial with the fixed base and the width of the gap is the same in the circumferential direction of the rotating shaft tube.

10. The installation method according to claim 6, characterized in that: The sealing assembly also includes a middle spacer ring, Before or after each of the lip seals is installed, the installation method further comprises: The middle spacer ring is installed in the gap between the fixed base and the rotary shaft tube.

Images