A ship's cargo hatch sealing arrangement

Abstract

This utility model discloses a sealing device for a ship's cargo hatch, comprising: a shell, a sealing assembly, a pressing assembly, and a drainage assembly; a sealing groove is formed on the shell, the sealing groove is arranged around the lower surface edge of the shell, and the sealing assembly is disposed within the sealing groove; the sealing assembly includes: a sealing strip, a reinforcing skeleton, and a sealing airbag; the sealing strip is disposed at the sealing groove, the top of the sealing strip is fitted with the top of the sealing groove, and the bottom extends to the sealing platform at the edge of the cargo hatch, the reinforcing skeleton is embedded inside the sealing strip, the sealing airbag is disposed within the sealing groove, the sealing airbag is in close contact with the inner wall of the sealing groove and the sealing platform of the cargo hatch, the sealing airbag is provided with an inflation port, the inflation port is connected to a pressure unit; this utility model can achieve an all-round, high-pressure sealing effect, effectively preventing seawater or rainwater leakage, and the leakage rate can be reduced by more than 95%.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, and in particular to a sealing device for the opening of a ship's cargo hold. Background Technology

[0002] As the core area for cargo storage, the sealing performance of a ship's cargo hold directly affects the safety of cargo transportation. This is especially true when transporting goods such as grain, coal, and chemical raw materials, which have high requirements for humidity and airtightness. The sealing and leak-proof effect of the cargo hold openings is crucial. Currently, most existing ship cargo hold opening covers use a single rubber sealing strip combined with a mechanical clamping structure to achieve a seal. However, during actual navigation, factors such as wave impact, hull vibration, and temperature changes can cause the rubber sealing strips to age, deform, and wear after long-term use. This leads to increased sealing gaps, allowing seawater or rainwater to easily seep into the cargo hold, causing the cargo to become damp, deteriorate, or corrode. Summary of the Invention

[0003] According to an embodiment of the present invention, a sealing device for a ship's cargo hatch is provided, comprising: a housing, a sealing assembly, a pressing assembly, and a drainage assembly; A sealing groove is provided on the housing, the sealing groove is arranged around the lower surface edge of the housing, and the sealing component is disposed in the sealing groove; The sealing assembly includes: a sealing strip, a reinforcing frame, and a sealing airbag; The sealing strip is located in the sealing groove. The top of the sealing strip fits against the top of the sealing groove, and the bottom extends to the sealing platform at the edge of the cargo hatch. A reinforcing skeleton is embedded inside the sealing strip. The sealing airbag is located in the sealing groove. The sealing airbag is in close contact with the inner wall of the sealing groove and the sealing platform at the cargo hatch. The sealing airbag is provided with an inflation port, which is connected to the air pressure unit. The clamping assembly is located inside the housing and is used to clamp the support beam at the edge of the cargo hatch. The drainage assembly is located on the shell and is used to drain rainwater or seawater from the surface of the shell.

[0004] Furthermore, the clamping assembly includes: a drive component, a clamping plate, and a pressure sensor; The drive unit is fixed on the housing. The output end of the drive unit is vertically downward and connected to the pressure plate. The pressure plate is a support beam corresponding to the edge of the cargo hatch. The lower surface of the pressure plate is provided with an anti-slip pad. The pressure sensor is located between the pressure plate and the support beam.

[0005] Furthermore, the clamping assembly also includes: a guide rod; Guide rods are provided on both sides of the drive component. One end of the guide rod is connected to the pressure plate and the other end is connected to the housing.

[0006] Further, the drainage assembly comprises: a flow guide groove and a drainage pipe; The flow guide groove is provided on the upper surface of the housing, the drainage pipe is provided at an end corner of the housing and communicates with the flow guide groove, the flow guide groove is configured to guide rainwater or seawater into the drainage pipe, an outlet end of the drainage pipe communicates with a drainage system of a ship deck, and a one-way valve is provided in the drainage pipe.

[0007] Further, the drainage assembly further comprises: a filter screen and a filter cover; The filter screen is provided in the flow guide groove and configured to filter impurities in rainwater or seawater in the flow guide groove, and the filter cover is installed on the top of the drainage pipe and configured to filter rainwater or seawater entering the drainage pipe.

[0008] Further, the flow guide groove is in a shape of a Chinese character "mi".

[0009] Further, a positioning pin is provided on the lower surface of the housing, and the positioning pin is arranged corresponding to a positioning hole at an edge of a cargo hatch.

[0010] Further, the cross-section of the sealing groove is U-shaped.

[0011] Further, the cross-section of the sealing strip is I-shaped.

[0012] According to the ship cargo hatch sealing device of an embodiment of the present utility model, the present application realizes sealing by arranging a sealing strip at the sealing groove, supports the sealing strip with a reinforcing framework to form a main sealing structure, arranges a sealing air bag in the sealing groove, after inflating the sealing air bag, the sealing air bag is closely attached to the inner wall of the sealing groove and the sealing table surface of the cargo hatch, fills the sealing gap through air pressure adjustment, and cooperates with uniformly distributed hydraulic pressing mechanisms to achieve an all-round, high-pressure sealing effect, effectively preventing seawater or rainwater from leaking, and the leakage rate can be reduced by more than 95%.

[0013] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. Description of Drawings

[0014] Figure 1 is a structural diagram of a ship cargo hatch sealing device according to an embodiment of the present utility model; Figure 2 is a front view of a ship cargo hatch sealing device according to an embodiment of the present utility model; Figure 3 is an enlarged view of part A in Figure 2 ; Figure 4 is a side view of a ship cargo hatch sealing device according to an embodiment of the present utility model; Figure 5This is a top view of a ship cargo hatch sealing device according to an embodiment of the present utility model; Figure 6 This is a cross-sectional view of a ship cargo hatch sealing device according to an embodiment of the present utility model; Figure 7 This is a cross-sectional view of another ship cargo hatch sealing device according to an embodiment of the present utility model.

[0015] In the figure, the following labels are used: 1 is the housing, 11 is the positioning pin, 2 is the sealing component, 21 is the sealing strip, 22 is the reinforcing frame, 23 is the sealing airbag, 24 is the inflation port, 3 is the pressing component, 31 is the driving component, 32 is the pressing plate, 33 is the pressure sensor, 34 is the guide rod, 4 is the drainage component, 41 is the flow guide groove, 42 is the drainage pipe, and 43 is the one-way valve. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0017] First, combine Figures 1-7 This invention describes a ship cargo hatch sealing device according to an embodiment of the present invention, used for sealing the ship cargo hatch opening.

[0018] like Figures 1-7 As shown, a ship cargo hatch sealing device according to an embodiment of the present invention includes: a housing 1, a sealing component 2, a pressing component 3, and a drainage component 4; A sealing groove is provided on the housing 1, the sealing groove is arranged around the lower surface edge of the housing 1, and the sealing component 2 is disposed in the sealing groove; The sealing assembly 2 includes: a sealing strip 21, a reinforcing frame 22, and a sealing airbag 23; The sealing strip 21 is located in the sealing groove. The top of the sealing strip 21 fits against the top of the sealing groove, and the bottom extends to the sealing platform at the edge of the cargo hatch. A reinforcing skeleton 22 is embedded inside the sealing strip 21. The sealing airbag 23 is located in the sealing groove. The sealing airbag 23 is in close contact with the inner wall of the sealing groove and the sealing platform of the cargo hatch. The sealing airbag 23 is provided with an inflation port 24, which is connected to the air pressure unit. The clamping assembly 3 is located inside the housing 1 and is used to clamp the support beam at the edge of the cargo hatch. The drainage component 4 is provided on the housing 1 and is used to drain rainwater or seawater from the surface of the housing 1.

[0019] This application achieves sealing by setting a sealing strip 21 at the sealing groove and supporting the sealing strip 21 with a reinforcing frame 22 to form a main sealing structure. By setting a sealing airbag 23 in the sealing groove and inflating the sealing airbag 23, the sealing airbag 23 is tightly attached to the inner wall of the sealing groove and the sealing platform of the cargo hatch. The sealing gap is filled by adjusting the air pressure, and with the cooperation of a uniformly distributed hydraulic pressing mechanism, an all-round, high-pressure sealing effect is achieved, which effectively prevents seawater or rainwater leakage and reduces the leakage rate by more than 95%.

[0020] like Figures 1-5 As shown, the clamping assembly 3 includes: a drive component 31, a clamping plate 32, and a pressure sensor 33; The drive unit 31 is fixed on the housing 1. The output end of the drive unit 31 is vertically downward and connected to the pressure plate 32. The pressure plate 32 is a support beam corresponding to the edge of the cargo hatch. The lower surface of the pressure plate 32 is provided with an anti-slip pad. The pressure sensor 33 is located between the pressure plate 32 and the support beam.

[0021] The clamping assembly 3 further includes: a guide rod 34; Guide rods 34 are provided on both sides of the driving component 31. One end of the guide rod 34 is connected to the pressure plate 32 and the other end is connected to the housing 1.

[0022] In this embodiment, the driving component 31 is a hydraulic driving cylinder, fixed on the upper surface of the housing 1. The piston rod of the hydraulic driving cylinder is vertically downward, driving the pressing plate 32 to move vertically. The guide rod 34 restricts the movement direction of the pressing plate 32 to prevent the pressing plate 32 from deviating. Under the drive of the driving component 31, the pressing plate 32 can press the support beam at the edge of the cargo hatch. The arc-shaped structure design can adapt to the small displacement when the ship vibrates, maintaining a stable pressing state. The pressure sensor 33 monitors the pressing force in real time, and the pressure signal is transmitted to the ship control system. When the pressing force is insufficient, the control system can automatically control the driving component 31 to supplement the pressure to ensure the sealing effect.

[0023] like Figures 5-7 As shown, the drainage component 4 includes: a flow guide trough 41 and a drain pipe 42; The flow channel 41 is located on the upper surface of the shell 1, and the drain pipe 42 is located at the end corner of the shell 1 and is connected to the flow channel 41. The flow channel 41 is used to guide rainwater or seawater into the drain pipe 42. The outlet end of the drain pipe 42 is connected to the drainage system of the ship deck. A one-way valve 43 is provided inside the drain pipe 42.

[0024] The drainage assembly 4 also includes: a filter screen and a filter cover; The filter screen is arranged in the diversion groove 41, and is configured to filter impurities in rainwater or seawater in the diversion groove 41. The filter cover is installed on the top of the drain pipe 42, and is configured to filter rainwater or seawater entering the drain pipe 42. The diversion groove 41 is in a "meter" shape.

[0025] In this embodiment, rainwater or seawater falling onto the housing 1 enters the diversion groove 41. After being filtered for the first time by the filter screen, the rainwater or seawater is filtered for the second time by the filter cover, and the filtered rainwater or seawater enters the drainage system of the ship deck through the drain pipe 42.

[0026] As Figures 6-7 shows, the lower surface of the housing 1 is provided with positioning pins 11, and the positioning pins 11 are arranged corresponding to positioning holes at the edge of the cargo hatch.

[0027] The positioning pins 11 on the lower surface of the housing 1 and the corresponding positioning holes at the edge of the cargo hatch are in clearance fit, and the length of the positioning pins 11 is 30-50mm, which can realize rapid positioning during installation of the cover plate, ensure accurate docking between the sealing assembly 2 and the sealing table surface of the cargo hatch, and prevent the cover plate from shifting when the hull vibrates.

[0028] The cross-section of the sealing groove is U-shaped, which facilitates installation of the sealing assembly 2.

[0029] The cross-section of the sealing strip 21 is I-shaped. In this embodiment, the sealing strip 21 is an elastic rubber strip, which is made of ethylene propylene diene monomer (EPDM) resistant to seawater corrosion and aging. The cross-section of the sealing strip is I-shaped, the top of the sealing strip is closely attached to the top of the sealing groove, and the bottom of the sealing strip extends to the sealing table surface at the edge of the cargo hatch. A metal reinforcing framework 22 is embedded inside the sealing strip 21 to enhance structural strength and prevent the sealing strip 21 from excessive deformation under pressure.

[0030] Above, with reference to Figures 1-7 a sealing device for a ship cargo hatch according to an embodiment of the present utility model is described. In the present application, sealing is performed by arranging the sealing strip 21 at the sealing groove, and the reinforcing framework 22 is used to support the sealing strip 21, so as to form a main sealing structure. By arranging the sealing air bag 23 in the sealing groove, after the sealing air bag 23 is inflated, the sealing air bag 23 is closely attached to the inner wall of the sealing groove and the sealing table surface of the cargo hatch, the sealing gap is filled through air pressure adjustment, and in combination with uniformly distributed hydraulic pressing mechanisms, an all-round, high-pressure sealing effect is achieved, which effectively prevents seawater or rainwater from leaking, and the leakage rate can be reduced by more than 95%.

[0031] The housing 1 is made of high-strength corrosion-resistant steel and coated with multi-layer anti-corrosion coatings, the sealing assembly 2 is made of materials resistant to seawater corrosion and aging, the pressing mechanism is equipped with a pressure sensor 33 and an automatic pressure compensation system, which can monitor and maintain the sealing pressure in real time, adapt to complex working conditions such as vibration and temperature changes during ship navigation, and the service life is 2-3 times longer than that of traditional cover plates; The “rice” shaped guide channel 41 is combined with the four corner drain pipes 42, along with the one-way valve 43, filter screen and filter cover, to quickly drain water from the surface of the cover plate, preventing water from soaking the sealing component 2 or seeping into the cargo hold, while also preventing the drain hole from being blocked and ensuring smooth drainage. The sealing component 2 is embedded, so the entire housing 1 does not need to be disassembled for replacement; the filter screen and filter cover are removable for cleaning; the positioning component enables quick installation and positioning of the housing 1, reducing the difficulty of maintenance operations, reducing maintenance time and costs, and improving maintenance efficiency by more than 60%. The clamping mechanism achieves automatic clamping, pressure monitoring, and pressure replenishment through the ship's hydraulic system and control system, eliminating the need for manual operation, reducing the labor intensity of the crew, and improving the accuracy of sealing control.

[0032] The shell 1 is a rectangular metal plate structure made of high-strength corrosion-resistant steel. The shell 1 is 15-25mm thick. After sandblasting and rust removal, the surface is coated with an epoxy zinc-rich anti-corrosion coating with a thickness of not less than 80μm to improve the resistance to seawater corrosion. A sealing groove is provided on the lower edge of the shell 1. The sealing groove has a "U" shaped cross section for installing the sealing component 2.

[0033] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A sealing device for a ship's cargo hold opening, characterized in that, Comprising: a housing, a sealing assembly, a pressing assembly and a drainage assembly; a sealing groove is provided on the housing, the sealing groove is arranged around the edge of the lower surface of the housing, and the sealing assembly is arranged in the sealing groove; the sealing assembly comprises: a sealing strip, a reinforcing framework and a sealing air bag; the sealing strip is arranged at the sealing groove, the top of the sealing strip is attached to the top of the sealing groove, the bottom of the sealing strip extends to a sealing table surface at the edge of a hatch opening, the reinforcing framework is embedded inside the sealing strip, the sealing air bag is arranged in the sealing groove, the sealing air bag is tightly attached to the inner wall of the sealing groove and the sealing table surface of the hatch opening, an inflation connector is arranged on the sealing air bag, and the inflation connector is communicated with an air pressure unit; the pressing assembly is arranged in the housing and used for pressing a support beam at the edge of the hatch opening; the drainage assembly is arranged on the housing and used for discharging rainwater or seawater on the surface of the housing.

2. The ship cargo hatch sealing device as described in claim 1, characterized in that, the pressing assembly comprises: a driving member, a pressing plate and a pressure sensor; the driving member is fixed on the housing, an output end of the driving member is arranged vertically downward and connected with the pressing plate, the pressing plate is arranged corresponding to the support beam at the edge of the hatch opening, a non-slip pad is arranged on the lower surface of the pressing plate, and the pressure sensor is arranged between the pressing plate and the support beam.

3. The ship cargo hatch sealing device as described in claim 2, characterized in that, the pressing assembly further comprises: a guide rod; the guide rods are respectively arranged on both sides of the driving member, one end of each guide rod is connected with the pressing plate, and the other end of each guide rod is connected with the housing.

4. The ship cargo hatch sealing device as described in claim 1, characterized in that, the drainage assembly comprises: a flow guide groove and a drainage pipe; the flow guide groove is arranged on the upper surface of the housing, the drainage pipe is arranged at an end corner of the housing and communicated with the flow guide groove, the flow guide groove is used for guiding rainwater or seawater into the drainage pipe, an outlet end of the drainage pipe is communicated with a drainage system of a ship deck, and a one-way valve is arranged in the drainage pipe.

5. The ship cargo hatch sealing device as described in claim 4, characterized in that, the drainage assembly further comprises: a filter screen and a filter cover; the filter screen is arranged in the flow guide groove and used for filtering impurities in rainwater or seawater in the flow guide groove, and the filter cover is installed at the top of the drainage pipe and used for filtering rainwater or seawater entering the drainage pipe.

6. The ship cargo hatch sealing device as described in claim 4, characterized in that, the flow guide groove is in a "meter" shape.

7. The ship cargo hatch sealing device as described in claim 1, characterized in that, a positioning pin is arranged on the lower surface of the housing, and the positioning pin is arranged corresponding to a positioning hole at the edge of the hatch opening.

8. The ship cargo hatch sealing device as described in claim 1, characterized in that, the cross section of the sealing groove is "U"-shaped.

9. The ship cargo hatch sealing device as described in claim 1, characterized in that, the cross section of the sealing strip is "I"-shaped.

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