Bag type ship bulkhead sealing device

Abstract

The utility model discloses a bag type ship bulkhead sealing device which comprises a sealing seat and sealing covers installed on the two sides of the sealing seat in a sealed mode, a main shaft bush is arranged in an annular cavity formed by an inner hole of the sealing seat and the sealing covers on the two sides, the main shaft bush is connected to a ship main shaft in a sleeved mode, and a sealing piece is arranged between the main shaft bush and the ship main shaft. An annular elastic sealing bag is arranged on the periphery of the main shaft bush, an inner cavity of the elastic sealing bag is communicated with a pressurized sealing medium source through a communicating hole in a sealing seat, an on-off control valve is arranged in a connecting pipeline between the communicating hole in the sealing seat and the pressurized sealing medium source, and the periphery of the elastic sealing bag is connected with the inner hole wall of the sealing seat in a sealed mode. A sealing piece is arranged between an inner hole of the elastic sealing bag and the main shaft lining, and sealing pieces are also arranged between the two sides of the elastic sealing bag and the corresponding sealing covers. The bag type ship bulkhead sealing device can be used under the condition that a bulkhead wall and a ship main shaft have no strict perpendicularity requirement, and the sealing effect is guaranteed after water enters a bulkhead.

Description

TECHNICAL FIELD

[0001] The utility model relates to a marine accessory, especially a cabin sealing device between a transmission shaft and a cabin wall in a ship cabin. BACKGROUND

[0002] The main hull of a ship must be provided with several transverse and longitudinal cabin walls according to requirements, so as to divide the inside of the hull into several cabins. When the shafting of the ship passes through the cabin walls, a cabin sealing device must be installed between the main shaft of the shafting and the cabin walls, so as to realize automatic compensation sealing between the cabins after a certain degree of accidental water inflow in any cabin, prevent water in the water inflow cabin from entering the adjacent cabin, and ensure the safety of the ship. The conventional cabin sealing device is composed of two groups of packing boxes and end face sealing types, which are sleeved on the main shaft of the ship and fixed on the cabin walls. When the cabin on one side of the cabin wall is waterlogged, the sealing ring inside is forced to shift axially and press against the inner side of the ring cavity to form end face sealing by using the pressure of water. This requires the end face sealing pair of the end face sealing type in the cabin sealing device to be perpendicular to the main shaft of the ship. Since the cabin wall of the ship is usually a welded structural member, it is difficult to be perpendicular to the main shaft. Moreover, the water inflow in the cabin of the ship usually occurs under the action of an unexpected force, which is often accompanied by deformation of the cabin wall. Therefore, the conventional cabin sealing device of the end face sealing type cannot guarantee and maintain the perpendicularity between the end face sealing member and the main shaft, and the sealing performance of the sealing member is also difficult to guarantee. SUMMARY

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a capsule type cabin sealing device for a ship, which can be used without strict perpendicularity between the cabin wall and the main shaft of the ship and ensure the sealing effect after the cabin is waterlogged.

[0004] In order to solve the above-mentioned technical problem, the utility model provides a capsule type cabin sealing device for a ship, which comprises a sealing seat and sealing covers installed on both sides of the sealing seat. A main shaft bushing is arranged in the ring cavity formed by the inner hole of the sealing seat and the two sealing covers. The main shaft bushing is sleeved on the main shaft of the ship and is provided with a sealing member between the main shaft bushing and the main shaft of the ship. An elastic sealing capsule is arranged on the outer periphery of the main shaft bushing. The elastic sealing capsule is circular. The inner cavity of the elastic sealing capsule is connected with a pressurized sealing medium source through a communication hole in the sealing seat. A switch control valve is arranged in the connecting pipeline between the communication hole in the sealing seat and the pressurized sealing medium source. The outer periphery of the elastic sealing capsule is sealingly connected with the inner hole wall of the sealing seat. A sealing member is arranged between the inner hole of the elastic sealing capsule and the main shaft bushing. A sealing member is also arranged between the two sides of the elastic sealing capsule and the corresponding sealing covers.

[0005] The sealing member is arranged between the main shaft bushing and the main shaft of the ship, and the sealing member is arranged between the main shaft bushing and the main shaft of the ship.

[0006] In an embodiment of the sealing member, the sealing member is an O-shaped sealing ring. The O-shaped sealing ring has simple structure and is easy to install, and can ensure the use effect.

[0007] In an embodiment of the sealing member, the pressurized sealing medium source is a hydraulic station or an air pressure station. The hydraulic station or the air pressure station as the pressurized sealing medium source can provide liquid or gas with a certain pressure as the pressurized sealing medium, and can meet the pressurized sealing requirement of the elastic sealing capsule.

[0008] In an embodiment of the sealing member, the elastic sealing capsule is a flexible rubber capsule. The flexible rubber capsule has good elastic deformation capacity, and can be tightly attached to the inner hole of the sealing seat, the inner side wall of the cover and the outer surface of the main shaft bushing under the action of the pressurized sealing medium, and good sealing effect is formed.

[0009] The utility model further preferably provides an embodiment, the cross section of the elastic sealing capsule is rectangular. Adopt this embodiment, the cross section shape of the elastic sealing capsule with the cross section shape similar to the annular cavity formed by the inner hole of the sealing seat, the inner side of the cover and the main shaft bushing, the deformation of each part is similar after the inner cavity is pressurized, and the use effect is good.

[0010] The utility model further preferably provides another embodiment, a rigid capsule ring is fixedly arranged on the outer periphery of the elastic sealing capsule, and the elastic sealing capsule is sealingly and fixedly connected with the inner hole wall of the sealing seat through the rigid capsule ring. Adopt this embodiment, the elastic sealing capsule can be kept in good shape through the rigid capsule ring, and the installation and connection between the elastic sealing capsule and the sealing seat are facilitated.

[0011] The utility model further preferably provides still another embodiment, a through hole is arranged on the outer peripheral wall of the elastic sealing capsule and the rigid capsule ring, and the through hole is communicated with the inner cavity of the elastic sealing capsule and the communicating hole on the sealing seat. Adopt this embodiment, the through hole is arranged at a position with stable shape, and the communication effect between the through hole and the communicating hole on the sealing seat can be ensured.

[0012] The utility model further preferably provides still another embodiment, a wear-resistant layer is arranged on the inner hole surface of the elastic sealing capsule. Adopt this embodiment, the wear-resistant layer can reduce abrasion when the inner hole surface of the elastic sealing capsule accidentally contacts the outer peripheral surface of the main shaft bushing in a normal working state without being pressurized, and the service life can be ensured.

[0013] The utility model further preferably provides still another embodiment, the wear-resistant layer is a wear-resistant rubber lining layer or a wear-resistant coating layer. Adopt this embodiment, the wear-resistant rubber lining layer and the wear-resistant coating layer can both have good wear resistance and abrasion reduction effects. ACCURATE DRAWING

[0014] The utility model capsule type ship cabin sealing device will be further explained in detail in combination with the drawings and specific embodiments.

[0015] Figure 1 is a structure schematic view of one specific embodiment of the utility model capsule type ship cabin sealing device;

[0016] Figure 2 is Figure 1 the left side view of the structure shown in the figure;

[0017] Figure 3 is Figure 1 the local enlarged view of the I part in the structure shown in the figure.

[0018] In the figure, 1 is a sealing seat, 2 is a communicating hole, 3 is a cover, 4 is a sealing element, 5 is a ship main shaft, 6 is a cabin wall, 7 is a through hole, 8 is an elastic sealing capsule, 9 is a main shaft bushing, 10 is a rigid capsule ring, and 11 is a wear-resistant layer. SPECIFIC EMBODIMENT

[0019] In Figure 1 and Figure 2 The capsule type ship cabin sealing device shown in the drawings, the ship main shaft 5 through the cabin wall 6, the cabin wall 6 on the hole of the ship main shaft 5 is provided with the mounting ring of the sealing seat 1, the sealing seat 1 is sealed and installed on the mounting ring through the sealing pad, the sealing seat 1 is a circular ring member, and is split type structure for easy installation, the sealing seat 1 is sealed and installed on the both sides of the sealing ring cover 3, the cover 3 is also preferably split type structure, the both sides of the cover 3 and the inner hole of the sealing seat 1 form a ring cavity. The inner hole of the sealing seat 1 and the ring cavity formed by the both sides of the cover 3 are provided with the main shaft bushing 9, the main shaft bushing 9 is sleeved on the ship main shaft 5 and provided with the sealing element 4 between the ship main shaft 5, the sealing element 4 shown in the drawing is O type sealing ring distributed along the axial direction, of course, it can also be a lip type sealing ring or other structure sealing element. The outer periphery of the main shaft bushing 9 is provided with the elastic sealing capsule 8, the elastic sealing capsule 8 is a circular ring, and the cross section is preferably rectangular shape, the elastic sealing capsule 8 is preferably flexible rubber capsule, the outer periphery of the elastic sealing capsule 8 and the inner hole wall of the sealing seat 1 are sealed and connected through the sealing element 4, for easy installation and fixation, see Figure 3 , the outer periphery of the elastic sealing capsule 8 is fixedly provided with the rigid capsule ring 10, the inner hole of the rigid capsule ring 10 and the outer periphery of the elastic sealing capsule 8 are glued and fixedly connected, the elastic sealing capsule 8 is fixedly connected with the inner hole wall of the sealing seat 1 through the rigid capsule ring 10, the sealing element 4 between the outer periphery of the elastic sealing capsule 8 and the inner hole wall of the sealing seat 1 is arranged between the outer periphery of the rigid capsule ring 10 and the inner hole of the sealing seat 1, the sealing element 4 at this position is preferably O type sealing ring embedded on the inner hole of the sealing seat 1 and distributed along the axial direction. The inner hole of the elastic sealing capsule 8 and the main shaft bushing 9 are provided with the sealing element 4, the sealing element 4 is preferably O type sealing ring embedded on the outer periphery of the main shaft bushing 9 and distributed along the axial direction, in order to reduce the wear caused by the contact between the elastic sealing capsule 8 and the main shaft bushing 9 when the relative movement occurs, as shown in Figure 3 , the inner hole surface of the elastic sealing capsule 8 is provided with wear resistant layer 11, the wear resistant layer 11 is preferably wear resistant rubber ring adhered on the inner hole of the elastic sealing capsule 8 or wear resistant coating sprayed on the inner hole surface of the elastic sealing capsule 8. The both sides of the elastic sealing capsule 8 and the corresponding cover 3 are also provided with the sealing element 4, the sealing element 4 at this position is preferably O type sealing ring embedded on the inner side surface of the cover 3 and distributed along the radial direction and coaxial direction.

[0020] The through hole 7 is located between the outer periphery of the elastic sealing capsule 8 and the adjacent two sealing members 4 which are spaced along the axial direction between the inner hole wall of the sealing seat 1, and the inner cavity of the elastic sealing capsule 8 is communicated with the source of the pressurized sealing medium through the through hole 7 and the communication hole 2 on the sealing seat 1, and a switch control valve is arranged in the connecting pipeline between the communication hole 2 on the sealing seat 1 and the source of the pressurized sealing medium, and the source of the pressurized sealing medium can be a hydraulic station or a pneumatic station, and in the normal running state of the ship, the connecting pipeline between the communication hole 2 on the sealing seat 1 and the source of the pressurized sealing medium is in the disconnected state through the switch control valve, the inner cavity of the elastic sealing capsule 8 is not filled with the pressurized sealing medium, and there is a gap between the inner hole of the elastic sealing capsule 8 and the main shaft bushing 9, and the main shaft bushing 9 rotates with the ship main shaft 5, when the ship bulkhead 6 on both sides of the ship bulkhead has water due to an accident, the state can be detected by the corresponding sensor arranged in the bulkhead, the switch control valve arranged in the connecting pipeline between the communication hole 2 on the sealing seat 1 and the source of the pressurized sealing medium is actuated to open the connecting pipeline, and the gas or liquid with a certain pressure in the source of the pressurized sealing medium fills the inner cavity of the elastic sealing capsule 8, so that the elastic sealing capsule 8 is inflated, and each outer surface of the elastic sealing capsule 8 is tightly attached to the inner hole of the sealing seat 1, the inner side surface of the two side covers 3 and the outer peripheral surface of the main shaft bushing 9 through the corresponding sealing members 4, and the gap between the main shaft bushing 9 and the elastic sealing capsule 8 is eliminated, so that the relative movement between the main shaft bushing 9 and the elastic sealing capsule 8 is changed into the relative rotation between the main shaft bushing 9 and the ship main shaft 5, and the sealing member 4 arranged between the main shaft bushing 9 and the ship main shaft 5 is changed from the previous static sealing working state to the dynamic sealing working state, so that the ship bulkhead on both sides of the ship bulkhead 6 is sealed and isolated by the elastic sealing capsule 8 and the corresponding sealing members 4 in the bulkhead sealing device, and the accidental water in the one side bulkhead does not enter the other side bulkhead through the perforation of the ship main shaft 5 on the bulkhead 6, and the sealing effect is good.

[0021] The above only lists some preferred embodiments of the present application, but the present application is not limited thereto, and many improvements and changes can be made. Any improvement and change made on the basis of the basic principles of the present application should be considered to fall within the protection scope of the present application.

Claims

1. A capsule-type ship compartment sealing device, comprising a sealing seat (1) and sealing caps (3) installed on both sides of the sealing seat (1), characterized in that: A main shaft bushing (9) is provided in the annular cavity formed by the inner hole of the sealing seat (1) and the two side covers (3). The main shaft bushing (9) is sleeved on the ship's main shaft (5) and a seal (4) is provided between it and the ship's main shaft (5). An elastic sealing bladder (8) is provided on the outer periphery of the main shaft bushing (9). The elastic sealing bladder (8) is annular. The inner cavity of the elastic sealing bladder (8) is connected to the pressurized sealing medium source through the connecting hole (2) on the sealing seat (1). An on / off control valve is provided in the connecting pipeline between the connecting hole (2) on the sealing seat (1) and the pressurized sealing medium source. The outer periphery of the elastic sealing bladder (8) is sealed to the inner wall of the sealing seat (1). A seal (4) is provided between the inner hole of the elastic sealing bladder (8) and the main shaft bushing (9). Seals (4) are also provided between the two sides of the elastic sealing bladder (8) and the corresponding covers (3).

2. The capsule-type ship compartment sealing device according to claim 1, characterized in that: The sealing element (4) is an O-ring.

3. The capsule-type ship compartment sealing device according to claim 1, characterized in that: The pressurized sealing medium source is a hydraulic station or a pneumatic station.

4. The capsule-type ship compartment sealing device according to claim 1, characterized in that: The elastic sealing bladder (8) is a flexible rubber capsule.

5. The capsule-type ship compartment sealing device according to claim 1, characterized in that: The cross-section of the elastic sealing bladder (8) is rectangular.

6. The bladder-type ship compartment sealing device according to claim 1, 4 or 5, characterized in that: A rigid ring (10) is fixedly provided on the outer periphery of the elastic sealing bladder (8), and the elastic sealing bladder (8) is sealed and fixed to the inner wall of the sealing seat (1) through the rigid ring (10).

7. The capsule-type ship compartment sealing device according to claim 6, characterized in that: A through hole (7) is provided on the outer peripheral wall of the elastic sealing bladder (8) and the rigid bladder ring (10) to connect the inner cavity of the elastic sealing bladder (8) with the connecting hole (2) on the sealing seat (1).

8. The bladder-type ship compartment sealing device according to claim 1, 4 or 5, characterized in that: A wear-resistant layer (11) is provided on the inner surface of the elastic sealing bladder (8).

9. The capsule-type ship compartment sealing device according to claim 8, characterized in that: The wear-resistant layer (11) is a wear-resistant rubber lining or a wear-resistant coating.

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