A waterproof sealing protection structure for a boat
Through a dual-sealing design and water pressure assistance, the problem of poor sealing of manholes on ships has been solved, achieving a highly efficient sealing effect, preventing water from entering the cabin, and protecting cargo and navigation safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EXPLOMAR (SUZHOU) ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-06-16
AI Technical Summary
Existing manhole sealing designs on ships are ineffective, leading to water ingress into the hull, posing a risk of damage to cargo, and impacting navigational safety and economic interests.
The design employs a dual-seal system, which includes a first seal formed by a conical sealing block and a trapezoidal sealing ring on a sealing cover plate, and a second seal formed by a sealing structure and an annular sealing groove. Water pressure is also used to enhance the contact force of the sealing components.
This significantly improves the sealing performance of the manhole, effectively preventing river water from entering the compartment, protecting cargo safety, and ensuring the normal use and economic benefits of the vessel.
Smart Images

Figure CN224361336U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship sealing technology, and in particular to a waterproof sealing and protective structure for ships. Background Technology
[0002] In the design and use of boats, in order to meet the needs of cargo storage, equipment placement and other needs, storage partitions are usually set to divide the internal space of the hull, and manholes are opened in the partitions to allow personnel to enter and exit the space under the partitions for operation, inspection or cargo handling.
[0003] In the prior art, such as the boat disclosed in publication number CN211617983U, there is a hull and a deck located at the upper part of the hull. A closed deckhouse is located in the middle of the hull, and the bottom of the deckhouse is lower than the deck. The deckhouse contains a bridge and a door. Although this design provides a good driving and operating environment for the crew, lowers the center of gravity of the ship, and improves the stability of the hull, it has shortcomings in terms of manhole sealing.
[0004] Currently, most boats have relatively simple sealing designs for manholes on bulkheads, resulting in poor sealing performance. When a boat encounters severe weather during navigation, such as heavy rain or large waves, or when an accident causes water to enter the cabin, river water can easily enter the bulkhead through the manholes. Once the bulkhead is flooded, the cargo inside will be at risk of being soaked and damaged, which will not only cause huge economic losses to the boat owner but may also affect the boat's normal navigation safety and subsequent use. Therefore, how to improve the sealing performance of boat manholes and prevent river water from entering the bulkhead through manholes when the cabin is flooded has become an urgent problem to be solved in the field of boat design. Utility Model Content
[0005] The purpose of this utility model is to provide a waterproof sealing and protective structure for boats, which adopts a double sealing design. The conical sealing block and trapezoidal sealing ring of the sealing cover plate form the first layer of sealing, and the second sealing structure and the annular sealing groove form the second layer of sealing, which greatly improves the sealing performance of the manhole. Moreover, when water enters the cabin, the water pressure can help increase the contact force and abutment force between the sealing components, further strengthening the sealing effect and effectively protecting the cargo in the cabin.
[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:
[0007] A waterproof sealing and protective structure for boats includes:
[0008] The hull has a cabin bulkhead fixedly connected to its interior. A manhole is provided on the cabin bulkhead, and a sealing component for sealing the manhole is installed on the cabin bulkhead at the position corresponding to the manhole.
[0009] The aforementioned waterproof sealing and protective structure for boats includes a sealing assembly comprising a sealing cover plate that matches the manhole, a conical sealing block fixedly connected to the bottom of the sealing cover plate, and a sealing structure 1 that cooperates with the conical sealing block fixedly connected to the inner wall of the manhole.
[0010] The aforementioned waterproof sealing and protective structure for boats includes a trapezoidal sealing ring fixedly connected to the inner wall of the manhole, wherein the trapezoidal sealing ring is hollow.
[0011] In the aforementioned waterproof sealing and protective structure for boats, the trapezoidal sealing ring has several trapezoidal abutment blocks arranged at equal intervals inside. One side of each trapezoidal abutment block abuts against one side of the inclined surface of the trapezoidal sealing ring, and the other side of each trapezoidal abutment block is fixedly connected to an abutment spring, which is also fixedly connected to the trapezoidal sealing ring.
[0012] In the aforementioned waterproof sealing and protective structure for boats, a second sealing structure is provided at the bottom edge of the sealing cover plate, and an annular sealing groove is provided on the top of the cabin bulkhead at a position corresponding to the second sealing structure, which cooperates with the second sealing structure.
[0013] The aforementioned waterproof sealing and protective structure for boats includes a second sealing structure comprising a hollow ring fixedly connected to the bottom of the sealing cover plate, a sealing ring slidably connected to the hollow ring, and a plurality of abutment springs arranged at equal intervals fixedly connected to the top of the sealing ring, with the other end of each abutment spring fixedly connected to the inner wall of the hollow ring.
[0014] In the aforementioned waterproof sealing and protective structure for boats, a Y-shaped sealing ring is provided on the inner wall of the annular sealing groove to cooperate with the sealing ring.
[0015] This utility model has at least the following beneficial effects:
[0016] 1. This utility model realizes a waterproof sealing and protection structure for boats, which adopts a double sealing design. The conical sealing block of the sealing cover and the trapezoidal sealing ring form the first layer of sealing, and the second sealing structure and the annular sealing groove form the second layer of sealing, which greatly improves the sealing performance of the manhole. Moreover, when water enters the cabin, the water pressure can help increase the contact force and abutment force between the sealing components, further strengthening the sealing effect and effectively protecting the cargo in the cabin.
[0017] 2. Double-sealing design for enhanced sealing effect: This invention uses a conical sealing block at the bottom of the sealing cover plate, which inserts into the manhole and cooperates with a trapezoidal sealing ring on the inner wall of the manhole to form the first layer of seal. A spring inside the trapezoidal sealing ring drives the trapezoidal abutment block to abut against the inclined surface of the trapezoidal sealing ring, further ensuring a tight seal between the conical sealing block and the manhole. Simultaneously, a second sealing structure is provided at the bottom edge of the sealing cover plate, cooperating with the annular sealing groove around the manhole to form the second layer of seal. The sealing ring slides on the inner wall of the hollow ring and, under the elastic force of the second abutment spring, drives the sealing ring to abut against the Y-shaped sealing ring inside the annular sealing groove, achieving a secondary seal between the sealing cover plate and the manhole. This double-sealing design greatly improves the sealing performance of the manhole, effectively preventing river water from entering the compartment through the manhole.
[0018] 3. Water pressure-assisted sealing enhances protection: When water enters the ship's hold, water pressure applies force to the sealing cover. This pressure further increases the contact force between the conical sealing block and the trapezoidal sealing ring, while also strengthening the resistance to the sealing ring. As the water pressure increases, the sealing components fit more tightly, thus maximizing the sealing effect. Even under adverse conditions of water ingress, it provides excellent protection for the cargo inside the hold, reducing the risk of damage due to water immersion and safeguarding the ship owner's economic interests and the normal operation of the vessel. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0020] Figure 1 This is a schematic diagram of the waterproof sealing and protective structure for boats according to this utility model;
[0021] Figure 2 This is a cross-sectional structural diagram of the waterproof sealing and protective structure for boats according to this utility model;
[0022] Figure 3 This utility model Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;
[0023] Figure 4 This is a schematic diagram of the cabin bulkhead in the waterproof sealing and protection structure for boats of this utility model;
[0024] Figure 5 This is a schematic diagram of the sealing component in the waterproof sealing and protection structure for boats of this utility model;
[0025] Figure 6 This is an exploded structural diagram of the sealing component in the waterproof sealing and protective structure for boats of this utility model;
[0026] Figure 7 This is a schematic diagram of the sealing structure one in the waterproof sealing and protection structure for boats of this utility model;
[0027] Figure 8 This is a schematic diagram of the trapezoidal abutment block in the waterproof sealing and protection structure for boats of this utility model;
[0028] Figure 9 This is a schematic diagram of the Y-shaped sealing ring in the waterproof sealing and protection structure for boats of this utility model;
[0029] Figure 10 This is a schematic cross-sectional view of the Y-shaped sealing ring in the waterproof sealing and protection structure for boats of this utility model.
[0030] Explanation of icon numbers:
[0031] 1. Hull; 2. Bulkhead; 3. Manhole; 4. Sealing components;
[0032] 401. Sealing cover plate; 4011. Conical sealing block; 4012. Sealing structure one;
[0033] 4013. Sealing structure two; 4014. Annular sealing groove;
[0034] 40141, Y-type sealing ring;
[0035] 40121. Trapezoidal sealing ring; 40122. Trapezoidal abutment block; 40123. Abutment spring one;
[0036] 40131, Hollow ring; 40132, Sealing ring; 40133, Abutment spring 2. Detailed Implementation
[0037] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0038] Please refer to Figures 1 to 10 As shown, an embodiment of this utility model provides a waterproof sealing and protective structure for a boat, including: a hull 1, a cabin bulkhead 2 fixedly connected inside the hull 1, a manhole 3 opened on the cabin bulkhead 2, and a sealing component 4 for sealing the manhole 3 installed on the cabin bulkhead 2 at the position corresponding to the manhole 3.
[0039] By adopting the above technical solutions, a complete and targeted sealing system for the manhole 3 of ships and boats has been constructed, laying the foundation for achieving efficient waterproof sealing of the manhole 3 of ships and boats to ensure the safety of cargo inside the ship's hold.
[0040] To achieve an effective seal between the sealing assembly 4 and the manhole 3, in this embodiment: the sealing assembly 4 includes a sealing cover 401 that matches the manhole 3. A conical sealing block 4011 is fixedly connected to the bottom of the sealing cover 401, and a sealing structure 4012 that cooperates with the conical sealing block 4011 is fixedly connected to the inner wall of the manhole 3. This design allows the sealing assembly 4 to fit tightly against the manhole 3. Through the synergistic effect of the conical sealing block 4011 and the sealing structure 4012, a preliminary seal is achieved for the manhole 3, providing crucial support for the overall sealing performance.
[0041] To further improve the sealing effect of the sealing structure 4012, in this embodiment: the sealing structure 4012 includes a trapezoidal sealing ring 40121 fixedly connected to the inner wall of the manhole 3, and the trapezoidal sealing ring 40121 is hollow. The interior of the trapezoidal sealing ring 40121 is provided with several trapezoidal abutment blocks 40122 arranged at equal intervals. One side of each trapezoidal abutment block 40122 abuts against one side of the inclined surface of the trapezoidal sealing ring 40121, and the other side of each trapezoidal abutment block 40122 is fixedly connected to an abutment spring 40123, which is also fixedly connected to the trapezoidal sealing ring 40121. The hollow trapezoidal sealing ring 40121, together with the internal trapezoidal abutment block 40122 and abutment spring 40123, can automatically adjust the abutment force according to the insertion of the conical sealing block 4011, making the seal tighter and effectively preventing water from seeping in from the gap between the manhole 3 and the conical sealing block 4011, thus enhancing the reliability of the seal.
[0042] To achieve a secondary seal between the sealing cover 401 and the manhole 3 and enhance the overall sealing performance, in this embodiment: a second sealing structure 4013 is provided at the bottom edge of the sealing cover 401, and an annular sealing groove 4014 is provided on the top of the cabin bulkhead 2 at a position corresponding to the second sealing structure 4013, which cooperates with the second sealing structure 4013. Through the cooperation of the second sealing structure 4013 and the annular sealing groove 4014, a second sealing barrier is formed between the sealing assembly 4 and the manhole 3, further preventing water from entering and greatly improving the waterproof sealing capability of the boat's manhole 3.
[0043] To ensure a better seal between the second sealing structure 4013 and the annular sealing groove 4014, in this embodiment, the second sealing structure 4013 includes a hollow ring 40131 fixedly connected to the bottom of the sealing cover plate 401. A sealing ring 40132 is slidably connected to the hollow ring 40131. A plurality of abutment springs 40133 arranged at equal intervals are fixedly connected to the top of the sealing ring 40132, and the other end of each abutment spring 40133 is fixedly connected to the inner wall of the hollow ring 40131. Under the action of the abutment springs 40133, the sealing ring 40132 can slide flexibly on the hollow ring 40131 and maintain a tight abutment with the annular sealing groove 4014, ensuring the sealing effect of the second sealing structure 4013 and providing a strong guarantee for secondary sealing.
[0044] To optimize the sealing fit between the sealing ring 40132 and the annular sealing groove 4014 and improve the tightness of the seal, in this embodiment, a Y-shaped sealing ring 40141 is provided on the inner wall of the annular sealing groove 4014 to cooperate with the sealing ring 40132. The unique shape of the Y-shaped sealing ring 40141 can better fit with the sealing ring 40132, forming multiple sealing lines to effectively prevent water leakage and further enhance the waterproof performance of the boat manhole 3.
[0045] The working principle of this utility model is as follows:
[0046] When the sealing cover 401 is placed over the manhole 3, the conical sealing block 4011 at its bottom is inserted into the manhole 3 and engages with the trapezoidal sealing ring 40121 on the inner wall. The abutment spring 40123 inside the trapezoidal sealing ring 40121 provides abutment force to the trapezoidal abutment block 40122, causing the trapezoidal abutment block 40122 to abut tightly against the inclined surface of the trapezoidal sealing ring 40121, thereby ensuring a tight first seal between the conical sealing block 4011 and the manhole 3.
[0047] Simultaneously, the sealing structure 4013 at the bottom edge of the sealing cover 401 works in conjunction with the annular sealing groove 4014 around the manhole 3. The sealing ring 40132 slides and seals on the inner wall of the hollow ring 40131, and under the elastic force of the abutment spring 40133, the sealing ring 40132 tightly abuts against the Y-shaped sealing ring 40141 inside the annular sealing groove 4014, thus achieving a secondary seal between the sealing cover 401 and the manhole 3.
[0048] When water enters the ship's hold, the water pressure exerts pressure on the sealing cover 401. This pressure further increases the contact force between the conical sealing block 4011 and the trapezoidal sealing ring 40121, and also enhances the resistance force on the sealing ring 40132, thereby improving the sealing effect to a greater extent. This provides good protection for the cargo in the ship's hold and effectively prevents the cargo from being damaged by water.
[0049] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A waterproof sealing and protective structure for boats, comprising a hull (1), characterized in that, The hull (1) is fixedly connected to a cabin bulkhead (2), and a manhole (3) is provided on the cabin bulkhead (2). A sealing component (4) for sealing the manhole (3) is installed on the cabin bulkhead (2) at the position corresponding to the manhole (3).
2. The waterproof sealing and protective structure for boats according to claim 1, characterized in that: The sealing assembly (4) includes a sealing cover plate (401) that matches the manhole (3), a conical sealing block (4011) is fixedly connected to the bottom of the sealing cover plate (401), and a sealing structure (4012) that cooperates with the conical sealing block (4011) is fixedly connected to the inner wall of the manhole (3).
3. The waterproof sealing and protective structure for boats according to claim 2, characterized in that: The sealing structure (4012) includes a trapezoidal sealing ring (40121) fixedly connected to the inner wall of the manhole (3), and the trapezoidal sealing ring (40121) is hollow.
4. The waterproof sealing and protective structure for boats according to claim 3, characterized in that: The trapezoidal sealing ring (40121) has a plurality of trapezoidal abutment blocks (40122) arranged at equal intervals inside. One side of the trapezoidal abutment block (40122) abuts against one side of the inclined surface of the trapezoidal sealing ring (40121). The other side of the trapezoidal abutment block (40122) is fixedly connected to an abutment spring (40123), and the abutment spring (40123) is fixedly connected to the trapezoidal sealing ring (40121).
5. The waterproof sealing and protective structure for boats according to claim 4, characterized in that: A second sealing structure (4013) is provided at the bottom edge of the sealing cover plate (401), and an annular sealing groove (4014) is provided on the top of the cabin bulkhead (2) at the position corresponding to the second sealing structure (4013) to cooperate with the second sealing structure (4013).
6. The waterproof sealing and protective structure for boats according to claim 5, characterized in that: The second sealing structure (4013) includes a hollow ring (40131) fixedly connected to the bottom of the sealing cover plate (401). A sealing ring (40132) is slidably connected to the hollow ring (40131). A plurality of abutment springs (40133) arranged at equal intervals are fixedly connected to the top of the sealing ring (40132), and the other end of the abutment springs (40133) is fixedly connected to the inner wall of the hollow ring (40131).
7. The waterproof sealing and protective structure for boats according to claim 6, characterized in that: The inner wall of the annular sealing groove (4014) is provided with a Y-shaped sealing ring (40141) that works in conjunction with the sealing ring (40132).