A temporary sealing device for a ship shafting compartment

Abstract

The application discloses a kind of temporary sealing devices of ship shafting compartment, temporary sealing devices of ship shafting compartment include sealing seat and cross support, sealing seat is the cylinder with the sealing plate being arranged at one end, the circular hole is opened in sealing plate, the cylinder is located in the circular hole, the diameter of cylinder and circular hole is greater than the diameter of the shaft, less than the diameter of the through cabin hole, the inner wall of the end of cylinder away from sealing plate is provided with rubber sealing ring, the end surface of sealing plate close to compartment wall is provided with rubber sealing flat gasket, cross support is the shaped steel with the diameter of the through cabin hole, sealing seat and cross support can be detachably connected, the temporary sealing device of ship shafting compartment in the application structure is simple, easy to manufacture, simple to operate, can effectively close the through cabin hole on compartment wall in the case that shafting compartment sealing device does not have installation condition, so as to avoid water into cabin damage ship equipment, protect other cabin equipment.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, and more particularly to a temporary sealing device for ship shafting compartments. Background Technology

[0002] In the construction and installation of ship equipment, the installation of the shafting system is of paramount importance. The installation position of the shafting compartment seals also has high requirements. To ensure the accuracy of the shafting centerline position, the ship needs to repeatedly measure and adjust the position of the shafting centerline while floating on water. The shafting compartment seals are only installed when the shafting centerline is adjusted to the optimal position. However, ship construction at the dock is affected by factors such as location, environment, and weather. For example, if a ship under construction encounters a strong typhoon, it may suffer hull damage. If the conditions for installing the shafting compartment seals are not met during construction, the penetration holes in the compartment walls cannot be effectively sealed in time, allowing water to enter the compartments and damage the ship's equipment. Summary of the Invention

[0003] To address the deficiencies in the existing technology, this application provides a temporary sealing device for ship shafting compartments, which solves the technical problem that, during ship construction, the shafting compartment sealing device lacks the necessary installation conditions, and the perforations on the compartment walls cannot be effectively sealed in a timely manner, potentially leading to water entering the compartments and damaging ship equipment.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0005] A temporary sealing device for a ship shafting compartment includes a through-hole in the compartment wall through which the shaft passes. The sealing device comprises a sealing seat and a transverse support. The sealing seat is a cylinder with a sealing plate at one end and a circular hole in the sealing plate. The cylinder is located inside the circular hole. The diameters of the cylinder and the circular hole are both larger than the diameter of the shaft and smaller than the diameter of the through-hole. A rubber sealing ring is provided on the inner wall of the end of the cylinder away from the sealing plate. A rubber sealing gasket is provided on the end face of the sealing plate near the compartment wall. The transverse support is a steel section with a length exceeding the diameter of the through-hole. The sealing seat and the transverse support are detachably connected. When the sealing seat is fitted onto the shaft on one side of the compartment wall and the transverse support is located on the other side of the compartment wall, and the sealing seat and the transverse support are tightly connected, the rubber sealing gasket is pressed against the compartment wall, and the rubber sealing ring is tightly attached to the outer wall of the shaft.

[0006] In one embodiment, the transverse support is an angle steel, and a first through hole is provided on one side of the transverse support, symmetrical to the center line of the axis. A round nut is welded on the end face of the sealing plate near the bulkhead. The round nut has an internal threaded hole. The round nut cooperates with a first fastener through the first through hole of the transverse support to detachably connect to the sealing seat. The first fastener includes a stud and a hexagonal nut.

[0007] In one embodiment, the sealing plate is a circular plate, the circular tube is eccentrically positioned relative to the sealing plate, the center distance between the circular tube and the sealing plate is equal to the center distance between the shaft and the through hole, and the angle between the circular tube and the sealing plate in the vertical plane is equal to the angle between the shaft and the through hole in the vertical plane.

[0008] In one embodiment, a steel gasket is provided between the transverse support and the bulkhead, and both the rubber sealing ring and the rubber sealing flat gasket have a 45° bevel cut on one side.

[0009] In one embodiment, a clamping device is provided at the end of the cylinder away from the sealing plate to clamp the rubber sealing ring to the surface of the shaft.

[0010] In one embodiment, the sealing seat includes two first semicircular plates and two first semicircular tubes. The first semicircular plates are semicircular plates with semicircular holes on their sides. When the two first semicircular plates are connected relative to each other, they form the sealing plate. When the two first semicircular tubes are connected relative to each other, they form the cylinder. The first semicircular plates are welded to the end of the first semicircular tubes near the bulkhead. The angle between the first semicircular plates and the first semicircular tubes in the vertical plane is equal to the angle between the axis and the through hole in the vertical plane. The first semicircular plates and the first semicircular tubes are eccentrically arranged. A blind hole is provided on the inner wall of the end of the first semicircular tube away from the first semicircular plates to place a rubber sealing ring. The two first semicircular tubes are detachably connected.

[0011] In one embodiment, a first connecting lug and a second connecting lug are provided on both sides of the cross-section of the axis of symmetry of the first semicircular tube. The first connecting lug and the second connecting lug are both welded and fixedly connected to the first semicircular tube and the first semicircular plate. A plurality of second through holes are provided on the end face of the first connecting lug and the second connecting lug. The two first semicircular tubes and the two first semicircular plates are detachably connected by cooperating with the second fasteners through the second through holes. The second fasteners include hexagonal bolts and hexagonal nuts.

[0012] In one embodiment, the second connecting ear plate near the center of the sealing plate has an L-shaped structure, and the first connecting ear plate away from the center of the sealing plate has a strip-shaped structure.

[0013] In one embodiment, a first reinforcing plate and a second reinforcing plate are provided on the circumferential outer surface of the first semicircular tube, and both the first reinforcing plate and the second reinforcing plate are welded and fixedly connected to the first semicircular tube and the first semicircular plate.

[0014] In one embodiment, the clamping device includes two second semicircular plates and two second semicircular tubes. Each second semicircular plate has a semicircular hole on its side. The two second semicircular plates are positioned opposite each other to form a circular plate with a central hole. The diameter of the semicircular hole in the second semicircular plate is equal to the outer diameter of the first semicircular tube. The second semicircular plate is located on the outer wall of the end of the first semicircular tube away from the bulkhead. An internally threaded hole is provided on the side of the second semicircular plate away from the bulkhead. The two sides of the cross-section of the axis of symmetry of the second semicircular plate are welded to a first connecting lug and a second connecting lug, respectively. The end of the second semicircular tube near the bulkhead is cylindrical, and the other end away from the bulkhead has a cylindrical shoulder. The inner diameter of the second semicircular tube is larger than the outer diameter of the first semicircular tube. The diameter of the shaft is such that the outer diameter of the cylindrical portion of the second semi-circular tube is smaller than the inner diameter of the first semi-circular tube where the blind hole is provided. The end face of the shoulder is provided with a connecting through hole and a third connecting lug, and the connecting through hole is opposite to the internal thread hole on the second semi-circular plate. The second double-ended studs pass through the connecting through hole and the internal thread hole on the second semi-circular plate respectively. The second hexagonal nut passes through the second double-ended stud and is pressed tightly against the side of the shoulder away from the bulkhead. The cylindrical end of the second semi-circular tube is inserted into the blind hole of the first semi-circular tube and abuts against the rubber sealing ring on the outer wall of the straight shaft. The third connecting lug is provided with a third through hole. The two second semi-circular tubes can be detachably connected through the cooperation of the third through hole and the third fastener. The third fastener includes a third hexagonal bolt and a third hexagonal nut.

[0015] The method of the present invention has achieved the following positive and beneficial effects through practice:

[0016] The temporary sealing device for ship shafting compartments in this invention includes a sealing seat and a transverse support. The sealing seat is a cylinder with a sealing plate at one end, and a circular hole is formed on the sealing plate. The cylinder is located inside the circular hole. The diameters of the cylinder and the circular hole are both larger than the diameter of the shaft and smaller than the diameter of the through-hole. A rubber sealing ring is provided on the inner wall of the end of the cylinder away from the sealing plate. A rubber sealing gasket is provided on the end face of the sealing plate near the compartment wall. The transverse support is a steel section with a length exceeding the diameter of the through-hole. The sealing seat and the transverse support are detachably connected. The temporary sealing device for ship shafting compartments in this application has a simple structure, is easy to manufacture, and is easy to operate. It can effectively seal the through-hole on the compartment wall when the installation conditions for a shafting compartment sealing device are not available, thereby preventing water from entering the compartment and damaging ship equipment, and protecting the equipment in other compartments. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the temporary sealing device for the shafting compartment of a ship in the embodiments of this application when sealing the shafting compartment;

[0018] Figure 2 This is a schematic diagram of the transverse support in the temporary sealing device for the ship shafting compartment in this embodiment of the application;

[0019] Figure 3 This is a schematic diagram of the sealing seat in the temporary sealing device for the ship's shafting compartment, as described in this application.

[0020] Figure 4 yes Figure 3 AA section view in the middle;

[0021] Figure 5 yes Figure 4 View B in the middle;

[0022] Figure 6 This is a front view of the round nut in the temporary sealing device for the ship shafting compartment in the embodiments of this application;

[0023] Figure 7 This is a front view of the clamping device in the temporary sealing device for the ship shafting compartment in this embodiment of the application;

[0024] Figure 8 for Figure 7 CC section view in the image.

[0025] Reference numerals: 101, bulkhead; 201, shaft; 301, first double-ended stud; 302, first hexagonal nut; 401, transverse support; 501, steel gasket; 601, rubber sealing gasket; 701, sealing seat; 7011, first semi-circular plate; 7012, first semi-circular tube; 7013, first reinforcing plate; 7014, first connecting lug; 7015, second reinforcing plate; 7016, second connecting lug; 7017, round nut ; 7018, Second semicircular plate; 7019, First rubber protective plate; 801, First hexagonal bolt; 802, First hexagonal nut; 901, Rubber sealing ring; 1001, Clamping device; 10011, Second semicircular tube; 10012, Third connecting ear plate; 10013, Second rubber protective plate; 1101, Second double-ended stud; 1102, Second hexagonal nut; 1201, Third hexagonal bolt; 1202, Third hexagonal nut. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0027] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0028] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0029] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical connection or internal connection between two components. They can be direct connection or indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0030] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 8 As shown, a temporary sealing device for a ship shafting compartment is disclosed. The compartment wall 101 has a through-hole through which the shaft 201 passes. The sealing device includes a sealing seat 701 and a transverse support 401. The sealing seat 701 is a cylinder with a sealing plate at one end. A circular hole is formed on the sealing plate, and the cylinder is located inside the circular hole. The diameters of both the cylinder and the circular hole are larger than the diameter of the shaft 201 but smaller than the diameter of the through-hole. A rubber sealing ring 901 is provided on the inner wall of the end of the cylinder furthest from the sealing plate. The sealing plate is located near the compartment wall. A rubber sealing gasket 601 is provided on the end face of the bulkhead 101. The transverse support 401 is a steel section with a length exceeding the diameter of the through hole. The sealing seat 701 and the transverse support 401 are detachably connected. When the sealing seat 701 is fitted onto the shaft 201 on one side of the bulkhead 101, the transverse support is located on the other side of the bulkhead 101, and the sealing seat 701 and the transverse support 401 are tightly connected, the rubber sealing gasket 601 is pressed against the bulkhead 101, and the rubber sealing ring 901 is tightly attached to the outer wall of the shaft 201.

[0032] The horizontal support 401 is made of angle steel or other structural steel, such as...Figure 2 As shown, a first through hole is provided on one side of the horizontal support 401, symmetrical to the center line of the axis 201, as follows: Figure 5 , 6 As shown, a round nut 7017 is welded to the end face of the sealing plate near the bulkhead 101. The round nut 7017 has an internal threaded hole. The round nut 7017 is connected to the sealing seat 701 by engaging with the first fastener through the first through hole of the transverse support 401. The first fastener includes the double-ended stud 301 and the hexagonal nut 302 in the prior art.

[0033] When shaft 201 passes through the cabin hole, the shaft and the cabin hole are eccentrically set. In order to better seal the cabin hole, the sealing plate is a circular plate. The circular tube and the sealing plate are eccentrically set. The center distance between the circular tube and the sealing plate is equal to the center distance between the shaft and the cabin hole. The included angle between the circular tube and the sealing plate on the vertical plane is equal to the included angle between shaft 201 and the cabin hole on the vertical plane.

[0034] A pressing device 1001 is provided at the end of the cylinder away from the sealing plate to press the rubber sealing ring 901 to the surface of the shaft 201, thereby improving the sealing performance of the sealing device.

[0035] To protect the bulkhead 101, a steel gasket 501 is placed between the transverse support 401 and the bulkhead 101. To enhance the sealing effect, both the rubber sealing ring 901 and the rubber sealing flat gasket 601 in this embodiment have a 45° bevel cut on one side.

[0036] To facilitate the mounting of the sealing seat 701 on the shaft 201, such as Figure 3 As shown, the sealing seat 701 includes two first semicircular plates 7011 and two first semicircular tubes 7012. The first semicircular plates 7011 are semicircular plates with semicircular holes on their sides. When the two first semicircular plates 7011 are connected relative to each other, they form a sealing plate in the sealing seat 701. When the two first semicircular tubes 7012 are connected relative to each other, they form a cylinder in the sealing seat 701. Figure 4 As shown, the first semicircular plate 7011 is welded to the end of the first semicircular tube 7012 near the bulkhead 101. The angle between the first semicircular plate 7011 and the first semicircular tube 7012 on the vertical plane is equal to the angle between the shaft 201 and the through hole on the vertical plane. The first semicircular plate 7011 and the first semicircular tube 7012 are eccentrically arranged. A blind hole is provided on the inner wall of the end of the first semicircular tube 7012 away from the first semicircular plate 7011. The blind hole is used to place the rubber sealing ring 901. The two first semicircular tubes 7012 are detachably connected.

[0037] like Figures 1-4As shown, a first connecting ear plate 7014 and a second connecting ear plate 7016 are provided on both sides of the cross-section of the axis of symmetry of the first semicircular tube 7012. The first connecting ear plate 7014 and the second connecting ear plate 7016 are both welded and fixedly connected to the first semicircular tube 7012 and the first semicircular plate 7011. Because the tube and the sealing plate are eccentrically arranged, in this embodiment, the second connecting ear plate 7016 near the center of the sealing plate has an L-shaped structure. Multiple second through holes are provided on the end faces of the first connecting ear plate 7014 and the second connecting ear plate 7016. The first connecting ear plate 7014 away from the center of the sealing plate has a strip-shaped structure. Multiple second through holes are provided on the end face of the first connecting ear plate 7014. The two first semicircular tubes 7012 are detachably connected by the cooperation of the second through holes and the second fasteners. The second fasteners include the hexagonal bolts 801 and hexagonal nuts 802 in the prior art.

[0038] To strengthen the connection between the first semicircular plate 7011 and the first semicircular tube 7012, a first reinforcing plate 7013 and a second reinforcing plate 7015 are provided on the circumferential outer surface of the first semicircular tube 7012. Both the first reinforcing plate 7013 and the second reinforcing plate 7015 are welded and fixedly connected to the first semicircular tube 7012 and the first semicircular plate 7011. Figure 3 As shown, the length of the second reinforcing plate 7015, which is closer to the center of the sealing plate, is longer than the length of the first reinforcing plate 7013, which is farther from the center of the sealing plate.

[0039] In order to ensure that the sealing seat 701 is subjected to uniform force when it is connected to the horizontal support 401, in this embodiment, a plurality of round nuts 7017 are symmetrically arranged about the center line of the sealing plate on the end face of the sealing plate near the bulkhead 101.

[0040] like Figure 1 , 7As shown in Figure 8, the clamping device 1001 includes a second semicircular plate 7018 and a second semicircular tube 10011. The second semicircular plate 7018 is a semicircular plate with a semicircular hole on its side. The two second semicircular plates 7011 are opposite each other to form a circular plate with a circular hole in the middle. The diameter of the semicircular hole in the second semicircular plate 7018 is equal to the outer diameter of the first semicircular tube 7012. The second semicircular plate 7018 is disposed on the outer wall of the end of the first semicircular tube 7012 away from the bulkhead 101. An internal threaded hole is provided on the side of the second semicircular plate 7018 away from the bulkhead 101. The two sides of the cross-section of the axis of symmetry of the second semicircular plate 7018 are welded to the first connecting lug 7014 and the second connecting lug 7016 respectively. Similarly, the second semicircular plate 7018 is welded to the first reinforcing plate 7013 and the second reinforcing plate 7015. The end of the second semicircular tube 10011 near the bulkhead 101 is cylindrical, and the other end away from the bulkhead 101 has a cylindrical shoulder. The inner diameter of the second semicircular tube 10011 is larger than the diameter of the shaft 201, and the outer diameter of the cylindrical portion of the second semicircular tube 10011 is smaller than that of the first semicircular tube 7012. The inner diameter of the blind hole is determined by the end face of the shoulder, which is provided with a connecting through hole and a third connecting lug 10012. The connecting through hole is aligned with the internal threaded hole on the second semicircular plate 7018. The second double-ended studs 1101 pass through the connecting through hole and the internal threaded hole on the second semicircular plate 7018, respectively. The second hexagonal nut 1102 passes through the second double-ended studs 1101 and is pressed tightly against the side of the shoulder away from the bulkhead 101. The cooperation of the second double-ended studs 1101 and the second hexagonal nut 1102 allows the cylindrical end of the second semicircular tube 10011 to be inserted into the first semicircular tube 7012 to install the blind hole. The rubber sealing ring 901 is pressed against the outer wall of the straight shaft 201 inside the hole to improve the sealing performance. The third connecting ear plate 10012 is provided with a third through hole. The two second semi-circular tubes 10011 can be detachably connected by the cooperation of the third through hole and the third fastener. The third fastener includes the third hexagonal bolt 1201 and the third hexagonal nut 1202 in the prior art. The third hexagonal bolt 1201 and the third hexagonal nut 1202 are installed in the third through hole. The third hexagonal nut 1202 is tightened to assemble the two semi-circular tubes 10011 into a whole.

[0041] When the first semicircular tube 7012 and the second semicircular tube 10011 are fitted onto the shaft 201, in order to prevent damage to the surface of the shaft 201, a first rubber protective plate 7019 is provided on the inner wall of the first semicircular tube 7012, and a second rubber protective plate 10013 is provided on the inner wall of the second semicircular tube 10011. In this embodiment, the first rubber protective plate 7019 is glued to the inner wall of the first semicircular tube 7012, and the second rubber protective plate 10013 is glued to the inner wall of the second semicircular tube 10011.

[0042] This embodiment also provides a method for temporary sealing of ship shafting compartments, which includes the following steps:

[0043] S1, Install the sealing seat 701 on the outer circle of the shaft 201, and use multiple sets of fasteners on the sealing seat 701 to assemble the two semi-circular sealing seats 701 into one piece;

[0044] S2, On the side near the bulkhead 101, a rubber sealing gasket 601 with a 45° oblique cut on one side is fitted onto the shaft 201 and glued to the end faces of the two first semicircular plates 7011 of the sealing seat 701.

[0045] S3, the resealing seat 701 is moved to the bulkhead 101 and closely adheres to the bulkhead 101;

[0046] S4, On the other side of the bulkhead 101, screw the first double-ended stud 301 into the internal threaded holes of the round nuts 7017 on the two first semi-circular plates 7011, then align the through hole on the transverse support 401 with the first double-ended stud 301, fit it on the first double-ended stud 301, screw on the first hexagonal nut 302, and at the same time install steel washers 501 at both ends of the transverse support 401. After the steel washers 501 are installed, tighten the first hexagonal nut 302 so that the sealing seat 701 is tightly attached to the bulkhead 101.

[0047] S5, install the second double-ended stud 1101 in the internal threaded hole of the second semicircular plate 7018 of the sealing seat 701, and then put the rubber sealing ring 901 with a slit on one side on the shaft 201 and insert it into the bottom hole of the first semicircular tube 7012.

[0048] S6, mount the pressure cap 1001 onto the shaft 201, install the third hexagonal bolt 1201 and the third hexagonal nut 1202 in the through hole of the third connecting ear plate 10012, tighten the third hexagonal nut 1202, and assemble the two semi-circular second semi-circular tubes 10011 into a whole.

[0049] S7. Align the connecting through hole at the shoulder of the pressure cap 1001 with the second double-ended stud 1101, fit it onto the second double-ended stud 1101, screw on and tighten the second hexagonal nut 1102. By tightening the second hexagonal nut 1102, the rubber sealing ring 901 is pressed together, thus achieving a sealing effect.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A temporary sealing device for a ship shafting compartment, wherein the compartment wall has a through-hole through which the shaft passes, characterized in that, The sealing device includes a sealing seat and a horizontal support. The sealing seat is a cylinder with a sealing plate at one end. A circular hole is opened on the sealing plate, and the cylinder is located inside the circular hole. The diameters of the cylinder and the circular hole are both larger than the diameter of the shaft and smaller than the diameter of the through hole. A rubber sealing ring is provided on the inner wall of the end of the cylinder away from the sealing plate. A rubber sealing gasket is provided on the end face of the sealing plate near the bulkhead. The horizontal support is a steel section with a length exceeding the diameter of the through hole. The sealing seat and the horizontal support are detachably connected. When the sealing seat is fitted onto the shaft on one side of the bulkhead, the horizontal support is located on the other side of the bulkhead, and the sealing seat and the horizontal support are tightly connected, the rubber sealing gasket is pressed against the bulkhead, and the rubber sealing ring is tightly attached to the outer wall of the shaft. The sealing seat includes two first semicircular plates and two first semicircular tubes. The first semicircular plates are semicircular plates with semicircular holes on their sides. When the two first semicircular plates are connected relative to each other, they form the sealing plate. When the two first semicircular tubes are connected relative to each other, they form the cylinder. The first semicircular plates are welded to the end of the first semicircular tubes near the bulkhead. The angle between the first semicircular plates and the first semicircular tubes in the vertical plane is equal to the angle between the axis and the through hole in the vertical plane. The first semicircular plates and the first semicircular tubes are eccentrically arranged. A blind hole is provided on the inner wall of the end of the first semicircular tube away from the first semicircular plates to place a rubber sealing ring. The two first semicircular tubes are detachably connected.

2. The temporary sealing device for ship shafting compartments according to claim 1, characterized in that, The horizontal support is an angle steel. A first through hole is provided on one side of the horizontal support, symmetrical to the center line of the axis. A round nut is welded on the end face of the sealing plate near the bulkhead. The round nut has an internal threaded hole. The round nut is connected to the sealing seat in a detachable manner by cooperating with a first fastener through the first through hole of the horizontal support. The first fastener includes a double-ended stud and a hexagonal nut.

3. The temporary sealing device for ship shafting compartments according to claim 1, characterized in that, The sealing plate is a circular plate, and the cylinder is eccentrically positioned relative to the sealing plate. The center distance between the cylinder and the sealing plate is equal to the center distance between the shaft and the through-hole. The angle between the cylinder and the sealing plate on the vertical plane is equal to the angle between the shaft and the through-hole on the vertical plane.

4. The temporary sealing device for ship shafting compartments according to claim 1, characterized in that, A steel gasket is provided between the horizontal support and the bulkhead, and both the rubber sealing ring and the rubber sealing flat gasket have a 45° bevel cut on one side.

5. The temporary sealing device for ship shafting compartments according to claim 1, characterized in that, A clamping device is provided at the end of the cylinder away from the sealing plate to clamp the rubber sealing ring to the surface of the shaft.

6. The temporary sealing device for ship shafting compartments according to claim 1, characterized in that, A first connecting lug and a second connecting lug are provided on both sides of the cross-section of the axis of symmetry of the first semicircular tube. The first connecting lug and the second connecting lug are welded and fixedly connected to the first semicircular tube and the first semicircular plate. Multiple second through holes are provided on the end faces of the first connecting lug and the second connecting lug. The two first semicircular tubes and the two first semicircular plates are detachably connected by the cooperation of the second through holes and the second fasteners. The second fasteners include hexagonal bolts and hexagonal nuts.

7. The temporary sealing device for ship shafting compartments according to claim 6, characterized in that, The second connecting ear plate, which is closer to the center of the sealing plate, has an L-shaped structure, while the first connecting ear plate, which is farther from the center of the sealing plate, has a strip-shaped structure.

8. The temporary sealing device for ship shafting compartments according to claim 6, characterized in that, A first reinforcing plate and a second reinforcing plate are provided on the circumferential outer surface of the first semicircular tube. The first reinforcing plate and the second reinforcing plate are both welded and fixedly connected to the first semicircular tube and the first semicircular plate.

9. The temporary sealing device for ship shafting compartments according to claim 6, characterized in that, The clamping device includes two second semicircular plates and two second semicircular tubes. Each second semicircular plate has a semicircular hole on its side. The two second semicircular plates face each other to form a circular plate with a central hole. The diameter of the semicircular hole in the second semicircular plate is equal to the outer diameter of the first semicircular tube. The second semicircular plate is located on the outer wall of the end of the first semicircular tube away from the bulkhead. An internally threaded hole is provided on the side of the second semicircular plate away from the bulkhead. The two sides of the cross-section of the axis of symmetry of the second semicircular plate are welded to the first connecting lug and the second connecting lug, respectively. The end of the second semicircular tube near the bulkhead is cylindrical, and the other end away from the bulkhead has a cylindrical shoulder. The inner diameter of the second semicircular tube is larger than the diameter of the shaft. The outer diameter of the cylindrical portion of the second semi-circular tube is smaller than the inner diameter of the first semi-circular tube where the blind mounting hole is located. The end face of the shoulder is provided with a connecting through hole and a third connecting lug, and the connecting through hole is opposite to the internal threaded hole on the second semi-circular plate. The second double-ended studs pass through the connecting through hole and the internal threaded hole on the second semi-circular plate respectively. The second hexagonal nut passes through the second double-ended stud and is pressed tightly against the side of the shoulder away from the bulkhead. The cylindrical end of the second semi-circular tube is inserted into the blind mounting hole of the first semi-circular tube and abuts against the rubber sealing ring on the outer wall of the straight shaft. The third connecting lug is provided with a third through hole. The two second semi-circular tubes can be detachably connected through the cooperation of the third through hole and the third fastener. The third fastener includes a third hexagonal bolt and a third hexagonal nut.

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