Ship compartment sealing device and ship

Abstract

The application relates to the technical field of cabin sealing of a ship propulsion system, and provides a ship cabin sealing device and a ship, which comprises a sealing flange, a linear driving mechanism and a flange seat; the sealing flange is movably sleeved on a transmission main shaft of the ship, and the axis of the sealing flange is coincident with the axis of the transmission main shaft; one side of a sealing boss of the sealing flange facing the transmission main shaft is provided with a sealing surface, the sealing surface is used for being detachably connected with the end surface of the sealing boss; the sealing flange is connected with the moving end of the linear driving mechanism, the fixed end of the linear driving mechanism is connected with the flange seat, and the flange seat is used for being connected with the cabin wall fence of the ship; wherein the sealing flange has a first position and a second position; when the sealing surface is separated from the end surface of the sealing boss at the first position; and when the sealing surface is attached to the end surface of the sealing boss at the second position; the application conveniently realizes the sealing of the cabin, and improves the safety of the ship.

Description

Technical Field

[0001] This invention relates to the field of ship propulsion system compartment sealing technology, and more particularly to a ship compartment sealing device and a ship. Background Technology

[0002] Ships consist of an engine room and a stern compartment. During normal operation, the engine room and stern compartment are in communication. If the engine room or stern compartment is flooded, the corresponding sealing devices must be activated to block the engine room from the stern compartment, thereby preventing water from entering the other compartment. For example, preventing water from entering the stern compartment from the engine room, or preventing water from entering the engine room from the stern compartment.

[0003] Existing sealing devices are mostly operated manually, which is cumbersome and results in low sealing efficiency, leading to poor sealing performance and potentially causing serious water ingress accidents on ships. Summary of the Invention

[0004] This invention provides a ship compartment sealing device and a ship, which solves or improves the problems of existing sealing devices being cumbersome to operate, having low sealing efficiency, and having poor sealing effect in the event of a loss of water.

[0005] This invention provides a shipboard compartment sealing device, comprising: a sealing flange, a linear drive mechanism, and a flange seat; the sealing flange is movably mounted on the ship's drive shaft, the axis of the sealing flange coinciding with the axis of the drive shaft; the sealing flange has a sealing surface on the side facing the drive shaft with a sealing boss, the sealing surface being detachably connected to the end face of the sealing boss; the sealing flange is connected to the moving end of the linear drive mechanism, the fixed end of the linear drive mechanism is connected to the flange seat, and the flange seat is used to connect to the ship's bulkhead railing; wherein, the sealing flange has a first position and a second position, in the first position, the sealing surface is separated from the end face of the sealing boss; in the second position, the sealing surface is in contact with the end face of the sealing boss.

[0006] According to the present invention, a ship compartment sealing device is provided, wherein the sealing flange includes: a flange body and a sealing ring; the sealing ring is sleeved on one end of the flange body near the sealing boss; the inner sidewall of the sealing ring is provided with a first arc surface, and the outer sidewall of the flange body is provided with a second arc surface, wherein the first arc surface and the second arc surface are in contact.

[0007] According to the present invention, a ship compartment sealing device is provided, wherein the linear drive mechanism includes: a rotary drive mechanism, a lead screw, and a lead screw nut; the rotary drive mechanism is disposed on the flange seat, the output shaft of the rotary drive mechanism is connected to the lead screw, the lead screw nut is connected to the sealing flange, and the lead screw and the lead screw nut are threadedly connected; wherein the axis of the lead screw is parallel to the axis of the transmission main shaft.

[0008] According to the present invention, a ship compartment sealing device is provided, wherein the rotary drive mechanism includes: an electric motor, a hydraulic pump, a reversing valve, and a hydraulic motor; the output shaft of the electric motor is connected to the rotor of the hydraulic pump, the oil inlet of the hydraulic pump is used to communicate with an oil tank, the oil outlet of the hydraulic pump is connected to the hydraulic motor through the reversing valve, and the output shaft of the hydraulic motor is connected to the lead screw; the electric motor is used to communicate with a leakage sensor inside the ship.

[0009] According to the present invention, a ship compartment sealing device further includes: a position sensor; the position sensor is disposed on the sealing flange and is communicatively connected to the motor.

[0010] According to the present invention, a ship compartment sealing device is provided, wherein the linear drive mechanism further includes: a first rotary handle and a second rotary handle; the first rotary handle and the second rotary handle are respectively disposed at both ends of the sealing flange along the axial direction of the sealing flange; the first rotary handle and the second rotary handle are respectively connected to the lead screw nut.

[0011] According to a ship compartment sealing device provided by the present invention, the linear drive mechanism further includes: a gear set; the first rotary handle and the second rotary handle are respectively connected to the input end of the gear set, and the output end of the gear set is connected to the lead screw nut; wherein, the transmission ratio from the input end to the output end of the gear set is greater than 1.

[0012] According to the present invention, a first sealing groove is provided on the sealing surface, the first sealing groove extends circumferentially along the sealing flange, and a sealing ring is arranged in the first sealing groove.

[0013] According to the present invention, a ship compartment sealing device is provided, wherein the flange seat is annular, the inner sidewall of the flange seat is connected to the outer sidewall of the sealing flange; the inner sidewall of the flange seat is provided with a second sealing groove, the second sealing groove extends circumferentially along the flange seat, and a sealing ring is arranged in the second sealing groove.

[0014] The present invention also provides a ship, comprising: a hull, a drive shaft, a bulkhead railing, and a ship compartment sealing device as described above; the drive shaft and the bulkhead railing are disposed within the hull, the bulkhead railing has a through hole for the drive shaft to pass through, the ship compartment sealing device is disposed at the through hole, and the ship compartment sealing device is connected to the bulkhead railing.

[0015] The ship compartment sealing device and ship provided by this invention, by setting a sealing flange and a linear drive mechanism, ensure that during normal ship operation, the sealing flange is in the first position, i.e., there is a certain gap between the sealing flange and the sealing boss, and the engine room and stern compartment on both sides of the bulkhead are in a connected state. When a flooding accident occurs in one of the compartments, to prevent water from seeping into the other compartment, the linear drive mechanism is activated. Under the drive of the linear drive mechanism, the sealing flange moves towards the side closer to the sealing boss until the sealing surface of the sealing flange is in contact with the end face of the sealing boss. At this time, the sealing flange is in the second position. Because the sealing surface is in contact with the end face of the sealing boss, and the seal is tight... The inner diameter of the sealing flange is smaller than the outer diameter of the sealing boss, so that the sealing boss completely seals the inner ring of the sealing flange, preventing water from entering from one compartment to another, thus ensuring the safety of the other compartment. After the water loss accident in one compartment is resolved, the linear drive mechanism is activated, and the sealing flange moves away from the sealing boss under the drive of the linear drive mechanism, so that the sealing surface separates from the end face of the sealing boss, that is, the sealing flange switches from the second position to the first position. By driving the sealing flange to switch between the first and second positions through the linear drive mechanism, the sealing of the compartments by the ship's bulkhead sealing device can be conveniently realized, improving the sealing effect of the ship's bulkhead sealing device and ensuring the safety of the ship. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is one of the structural schematic diagrams of the ship compartment sealing device provided by the present invention;

[0018] Figure 2 This invention provides Figure 1 Sectional view in the AA direction;

[0019] Figure 3 This invention provides Figure 2 A magnified structural diagram at point B;

[0020] Figure 4 This is the second schematic diagram of the structure of the ship compartment sealing device provided by the present invention;

[0021] Figure 5 This is the third structural schematic diagram of the ship compartment sealing device provided by the present invention;

[0022] Figure 6 This is a schematic diagram of the hydraulic principle of the rotary drive mechanism provided by the present invention;

[0023] Figure label:

[0024] 1: Sealing flange; 11: Flange body; 12: Sealing ring; 13: First sealing groove; 2: Flange seat; 21: Second sealing groove; 3: Drive shaft; 31: Sealing boss; 4: Bulkhead fence; 51: Rotary drive mechanism; 511: Electric motor; 512: Hydraulic pump; 513: Reversing valve; 514: Hydraulic motor; 52: Lead screw; 53: Lead screw nut; 54: First rotating handle; 55: Second rotating handle; 56: Gear set; 561: First gear; 562: Second gear; 563: Third gear; 564: Fourth gear. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0028] The following is combined Figures 1 to 6 This invention describes a ship compartment sealing device and a ship.

[0029] like Figures 1 to 5 As shown in the figure, the ship compartment sealing device shown in this embodiment includes: sealing flange 1, linear drive mechanism and flange seat 2.

[0030] A sealing flange 1 is movably fitted onto the main drive shaft 3 of the ship, with the axis of the sealing flange 1 coinciding with the axis of the main drive shaft 3. The sealing flange 1 has a sealing surface on the side facing the sealing boss of the main drive shaft 3, which is detachably connected to the end face of the sealing boss. The inner diameter of the sealing flange is smaller than the outer diameter of the sealing boss 31. The sealing flange 1 is connected to the moving end of a linear drive mechanism, and the fixed end of the linear drive mechanism is connected to a flange seat 2. The flange seat 2 is connected to the bulkhead railing 4 of the ship. One side of the bulkhead railing 4 is the engine room of the ship, and the other side is the stern compartment. One end of the main drive shaft 3 extends into the engine room and is connected to the power unit, while the other end extends into the stern compartment and is connected to the propeller. The power unit drives the propeller to rotate through the main drive shaft 3. The sealing flange 1 has a first position and a second position. In the first position, the sealing surface is separated from the end face of the sealing boss 31; in the second position, the sealing surface is in contact with the end face of the sealing boss 31.

[0031] Specifically, the ship bulkhead sealing device shown in this embodiment, through the setting of a sealing flange 1 and a linear drive mechanism, ensures that during normal ship operation, the sealing flange 1 is in the first position, i.e., there is a certain gap between the sealing flange 1 and the sealing boss 31, and the engine room and stern compartment on both sides of the bulkhead 4 are in a connected state. When one of the compartments in the engine room or stern compartment experiences a water ingress accident, to prevent water from seeping from one compartment into the other, the linear drive mechanism is activated. Under the drive of the linear drive mechanism, the sealing flange 1 moves towards the side closer to the sealing boss 31 until the sealing surface of the sealing flange 1 is in contact with the end face of the sealing boss 31. At this time, the sealing flange 1 is in the second position, because the sealing surface is in contact with the end face of the sealing boss 31, and... The inner diameter of the sealing flange 1 is smaller than the outer diameter of the sealing boss 31, so that the sealing boss 31 completely seals the inner ring of the sealing flange 1, preventing water from entering the other compartment from one compartment, thus ensuring the safety of the other compartment. After the water loss accident in one compartment is resolved, the linear drive mechanism is activated, and the sealing flange 1 moves away from the sealing boss 31 under the drive of the linear drive mechanism, so that the sealing surface separates from the end face of the sealing boss 31, that is, the sealing flange 1 switches from the second position to the first position. By driving the sealing flange 1 to switch between the first position and the second position through the linear drive mechanism, the sealing of the compartment by the ship's compartment sealing device can be conveniently realized, improving the sealing effect of the ship's compartment sealing device and ensuring the safety of the ship.

[0032] It should be noted that the linear drive mechanism shown in this embodiment can be any of a lead screw, a linear motor, a pneumatic cylinder, or a hydraulic cylinder.

[0033] In some embodiments, such as Figure 3 As shown, the sealing flange 1 in this embodiment includes: a flange body 11 and a sealing ring 12; the sealing ring 12 is sleeved on one end of the flange body 11 near the sealing boss 31, and the sealing surface is formed on the side of the sealing ring 12 near the sealing boss 31; the inner sidewall of the sealing ring 12 is provided with a first arc surface, and the outer sidewall of the flange body 11 is provided with a second arc surface, the curvature of the first arc surface and the second arc surface are equal, and the first arc surface and the second arc surface fit together.

[0034] Specifically, when the sealing flange 1 shown in this embodiment is in the second position, if the transmission main shaft 3 vibrates and tilts, the transmission main shaft 3 will cause the sealing ring 12 to tilt because the sealing ring 12 is in contact with the sealing boss 31. The flange body 11 is fixedly connected to the bulkhead fence 4, and the flange body 11 is in a relatively static state. The first arc surface can rotate on the second arc surface, thereby compensating for the tilt deviation of the sealing ring 12, so that the sealing ring 12 can always be in contact with the sealing boss 31, thereby ensuring the sealing effect of the sealing ring 12. The structure of the first arc surface and the second arc surface is similar to the structure of the ball bearing known in the art.

[0035] In some embodiments, such as Figure 2 As shown, the linear drive mechanism in this embodiment includes: a rotary drive mechanism 51, a lead screw 52, ​​and a lead screw nut 53; the rotary drive mechanism 51 is mounted on the flange seat 2, the output shaft of the rotary drive mechanism 51 is connected to the lead screw 52, ​​the lead screw nut 53 is connected to the sealing flange 1, and the lead screw 52 and the lead screw nut 53 are threadedly connected; wherein, the axis of the lead screw 52 is parallel to the axis of the transmission main shaft 3.

[0036] Specifically, when the rotary drive mechanism 51 rotates in the forward direction as shown in this embodiment, it drives the lead screw 52 to rotate in the forward direction. At this time, the lead screw nut 53 drives the sealing flange 1 to move along the axial direction of the lead screw 52 towards the side closer to the sealing boss 31 until the sealing flange 1 is in contact with the sealing boss 31. When the rotary drive mechanism 51 rotates in the reverse direction, it drives the lead screw 52 to rotate in the reverse direction. At this time, the lead screw nut 53 drives the sealing flange 1 to move along the axial direction of the lead screw 52 towards the side farther away from the sealing boss 31 until the sealing flange 1 is separated from the sealing boss 31. By setting the lead screw 52 and the lead screw nut 53, the rotational motion of the rotary drive mechanism 51 is converted into the linear motion of the sealing flange 1, thereby improving the stability of the movement of the sealing flange 1.

[0037] In some embodiments, such as Figure 6 As shown, the rotary drive mechanism 51 in this embodiment includes: an electric motor 511, a hydraulic pump 512, a reversing valve 513, and a hydraulic motor 514; the output shaft of the electric motor 511 is connected to the rotor of the hydraulic pump 512, the oil inlet of the hydraulic pump 512 is used to communicate with the oil tank, the oil outlet of the hydraulic pump 512 is connected to the hydraulic motor 514 through the reversing valve 513, and the output shaft of the hydraulic motor 514 is connected to the lead screw 52; the electric motor 511 is used to communicate with the leakage sensor inside the ship.

[0038] Specifically, during normal operation of the ship, the electric motor 511 is in the off state, and the hydraulic pump 512 and hydraulic motor 514 are not working. When the ship is flooded, the leakage sensor inside the ship detects the leakage and sends an opening signal to the electric motor 511. The electric motor 511 turns on, which in turn drives the hydraulic pump 512 to pump oil to the hydraulic motor 514. The hydraulic oil drives the output shaft of the hydraulic motor 514 to rotate, which in turn drives the lead screw 52 to rotate, realizing the linear movement of the sealing flange 1.

[0039] It should be noted that the hydraulic motor 514 shown in this embodiment has two working ports, namely a first port and a second port. The first port and the second port are connected. When oil enters the first port, oil exits the second port and the second port is connected to the oil tank. At this time, the output shaft of the hydraulic motor 514 rotates in the forward direction. When oil enters the second port, oil exits the first port and the first port is connected to the oil tank. At this time, the output shaft of the hydraulic motor 514 rotates in the reverse direction. By switching the position of the reversing valve 513, the connection state between the first port and the second port can be changed, thereby changing the rotation direction of the output shaft of the hydraulic motor 514, so as to realize the change of the movement direction of the sealing flange 1.

[0040] In some embodiments, the ship sealing device shown in this embodiment further includes: a position sensor; the position sensor is disposed on the sealing flange 1 and is communicatively connected to the motor 511.

[0041] Specifically, the position sensor shown in this embodiment is used to detect the current position of the sealing flange 1. When the position sensor detects that the sealing flange 1 is in the second position, it indicates that the sealing flange 1 is now in contact with the sealing boss 31. The position sensor sends a stop signal to the motor 511, and the motor 511 stops rotating. When the position sensor detects that the sealing flange 1 is in the first position, the surface sealing flange 1 is now fully separated from the sealing boss 31. The position sensor sends a stop signal to the motor 511, and the motor 511 stops rotating.

[0042] In this embodiment, the position sensor can be a proximity switch.

[0043] In some embodiments, such as Figure 1 and Figure 5 As shown, the linear drive mechanism in this embodiment further includes: a first rotary handle 54 and a second rotary handle 55; the first rotary handle 54 and the second rotary handle 55 are respectively disposed at both ends of the sealing flange 1 along the axial direction of the sealing flange 1, that is, the first rotary handle 54 is located in the engine compartment and the second rotary handle 55 is located in the stern compartment; the first rotary handle and the second rotary handle are respectively connected to the lead screw nut.

[0044] Specifically, when any of the electric motor 511, hydraulic pump 512, or hydraulic motor 514 malfunctions and cannot work properly, the operator can directly rotate the first rotary handle 54 or the second rotary handle 55 to manually drive the rotation of the lead screw nut 53. That is, the lead screw nut 53 rotates relative to the lead screw 52, ​​and the lead screw nut 53 moves along the axis of the lead screw 52, ​​thereby driving the movement of the sealing flange 1. When the engine room is flooded, the operator in the stern compartment rotates the second rotary handle 55, and when the stern compartment is flooded, the operator in the engine room rotates the first rotary handle 54.

[0045] In some embodiments, such as Figure 4 As shown, the linear drive mechanism in this embodiment further includes: a gear set 56; a first rotary handle 54 and a second rotary handle 55 are respectively connected to the input end of the gear set 56, and the output end of the gear set 56 is connected to the lead screw nut 53; wherein, the transmission ratio from the input end to the output end of the gear set 56 is greater than 1.

[0046] Specifically, the torque of the first rotary handle 54 or the torque of the second rotary handle 55 is transmitted to the lead screw nut 53 through the gear set 56. Since the transmission ratio from the input end to the output end of the gear set 56 is greater than 1, the gear set 56 is equivalent to a speed reducer, which reduces the labor intensity of the operator when rotating the first rotary handle 54 or the second rotary handle 55.

[0047] In one embodiment, such as Figure 4 As shown, the gear set 56 includes a first gear 561, a second gear 562, a third gear 563, and a fourth gear 564. When the operator rotates the first rotary handle 54 or the second rotary handle 55, the torque is transmitted to the lead screw nut 53 in sequence through the first gear 561, the second gear 562, the third gear 563, and the fourth gear 564. The lead screw nut 53 moves synchronously along the axis of the lead screw 52 during the rotation.

[0048] In some embodiments, such as Figure 3 As shown, a first sealing groove 13 is provided on the sealing surface in this embodiment. The first sealing groove 13 extends circumferentially along the sealing flange 1, and a sealing ring is arranged in the first sealing groove 13.

[0049] Specifically, when the sealing flange 1 is in the second position, the sealing ring in the first sealing groove 13 fits against the end face of the sealing boss 31, and the sealing ring undergoes compression deformation, which increases the contact area between the sealing ring and the sealing boss 31 and improves the sealing effect of the sealing flange 1.

[0050] In some embodiments, such as Figure 2 As shown, the flange seat 2 in this embodiment is annular, and the inner wall of the flange seat 2 is connected to the outer wall of the sealing flange 1; a second sealing groove 21 is provided on the inner wall of the flange seat 2, and the second sealing groove 21 extends along the circumference of the flange seat 2, and a sealing ring is arranged in the second sealing groove 21.

[0051] Specifically, when the sealing flange 1 and the flange seat 2 move relative to each other, a sealing ring is provided between the flange seat 2 and the sealing flange 1, thereby effectively preventing water seepage between the inner wall of the flange seat 2 and the outer wall of the sealing flange 1.

[0052] The present invention also provides a ship, including: a hull, a drive shaft 3, a bulkhead railing 4, and a ship compartment sealing device as described above; the drive shaft 3 and the bulkhead railing 4 are disposed in the hull, the bulkhead railing 4 is provided with a through hole for the drive shaft 3 to pass through, the ship compartment sealing device is disposed at the through hole, and the ship compartment sealing device is connected to the bulkhead railing 4.

[0053] Since the ship adopts the ship compartment sealing device shown in the above embodiments, the specific structure of the ship compartment sealing device refers to the above embodiments. Since the ship adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0054] 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ship compartment sealing device, characterized in that, include: Sealing flange, linear drive mechanism and flange seat; The sealing flange is movably fitted onto the main drive shaft of the ship, and the axis of the sealing flange coincides with the axis of the main drive shaft; the sealing flange has a sealing surface on the side of the sealing boss facing the main drive shaft, and the sealing surface is used for detachable connection with the end face of the sealing boss. The sealing flange is connected to the moving end of the linear drive mechanism, and the fixed end of the linear drive mechanism is connected to the flange seat. The flange seat is used to connect to the bulkhead railing of the ship. The sealing flange has a first position and a second position. In the first position, the sealing surface is separated from the end face of the sealing boss; in the second position, the sealing surface is in contact with the end face of the sealing boss. The linear drive mechanism includes: a rotary drive mechanism, a lead screw, a lead screw nut, a first rotary handle, a second rotary handle, and a gear set; the rotary drive mechanism is mounted on the flange seat, the output shaft of the rotary drive mechanism is connected to the lead screw, the lead screw nut is connected to the sealing flange, and the lead screw and the lead screw nut are threaded together; wherein, the axis of the lead screw is parallel to the axis of the transmission main shaft; The rotary drive mechanism includes an electric motor, which is used to communicate with a leak sensor inside the ship to automatically activate the rotary drive mechanism to move the sealing flange from the first position to the second position when a leak is detected. The first rotary handle and the second rotary handle are respectively located at both ends of the sealing flange along the axial direction of the sealing flange, and are respectively connected to the input end of the gear set. The output end of the gear set is connected to the lead screw nut. The transmission ratio from the input end to the output end of the gear set is greater than 1. The first rotary handle and the second rotary handle are used to manually operate the linear drive mechanism when the motor and its drive system fail.

2. The ship compartment sealing device according to claim 1, characterized in that, The sealing flange includes: a flange body and a sealing ring; The sealing ring is fitted onto one end of the flange body near the sealing boss; the inner sidewall of the sealing ring is provided with a first arc surface, and the outer sidewall of the flange body is provided with a second arc surface, with the first arc surface and the second arc surface fitting together.

3. The ship compartment sealing device according to claim 1, characterized in that, The rotary drive mechanism includes: a hydraulic pump, a reversing valve, and a hydraulic motor; The output shaft of the electric motor is connected to the rotor of the hydraulic pump. The oil inlet of the hydraulic pump is used to communicate with the oil tank. The oil outlet of the hydraulic pump is connected to the hydraulic motor through the reversing valve. The output shaft of the hydraulic motor is connected to the lead screw.

4. The ship compartment sealing device according to claim 3, characterized in that, The ship compartment sealing device also includes: a position sensor; The position sensor is mounted on the sealing flange and is communicatively connected to the motor.

5. The ship compartment sealing device according to claim 1, characterized in that, A first sealing groove is provided on the sealing surface. The first sealing groove extends circumferentially along the sealing flange and is used to install a sealing ring.

6. The ship compartment sealing device according to claim 1, characterized in that, The flange seat is annular, and the inner wall of the flange seat is connected to the outer wall of the sealing flange; the inner wall of the flange seat is provided with a second sealing groove, which extends circumferentially along the flange seat, and a sealing ring is arranged in the second sealing groove.

7. A ship, characterized in that, include: Hull, drive shaft, bulkhead railing, and ship compartment sealing device as described in any one of claims 1 to 6; The drive shaft and the bulkhead rail are located within the hull. The bulkhead rail has a through hole for the drive shaft to pass through. The ship's compartment sealing device is located at the through hole and is connected to the bulkhead rail.

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