一种船舶管路泄漏监测声发射传感器防护罩
By designing innovative structures for components such as the lower shell, upper shell, and sealing assembly, the problems of inconvenient disassembly and assembly and poor sealing effect of the sensor protective cover were solved, enabling rapid disassembly and assembly of the sensor and effective protection, thus extending the service life of the sensor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI DINGHENG SHIPPING CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sensor protective covers are inconvenient to install and remove, have poor sealing performance, and are easily invaded by rainwater and seawater, causing damage to the sensors and affecting the normal operation of monitoring work.
A protective cover structure including a lower cylinder shell, an upper cylinder shell, a sealing component, a positioning component, a locking component, and a threading component was designed. It utilizes the expansion and sealing of the first and second annular airbags, the spring clamping and fixing, and the negative pressure sealing mechanism of the sealing piston to achieve rapid disassembly and effective sealing.
It enables quick assembly and disassembly of the sensor and effective sealing, preventing rainwater and seawater intrusion and extending the sensor's service life.
Smart Images

Figure CN224516545U_ABST
Abstract
Claims
1. A marine vessel pipe leak monitoring acoustic emission sensor guard, characterized by: The device includes a lower cylindrical shell (1), an upper cylindrical shell (11) is provided on the outer side of the upper port of the lower cylindrical shell (1), a sealing assembly (3) is provided on the top of the upper cylindrical shell (11), a positioning assembly (2) is provided inside the lower cylindrical shell (1), a sensor body (12) is provided inside the positioning assembly (2), a wire threading assembly (5) is provided on the side of the lower cylindrical shell (1), a connecting wire (13) is fixedly connected to the sensor body (12), and the end of the connecting wire (13) passes through the wire threading assembly (5) and is connected to an external controller. The lower cylinder shell (1) and the upper cylinder shell (11) are both provided with a locking component (4) at the snap-fit opening; The sealing assembly (3) is provided with a sealing piston (33), a first annular airbag (38) and a second annular airbag (310). The sealing piston (33) is slidably disposed in the upper cylinder shell (11). The first annular airbag (38) is disposed on the inner wall of the port of the upper cylinder shell (11). The second annular airbag (310) is disposed on the outer wall of the port of the lower cylinder shell (1). The first annular airbag (38) is directly opposite the second annular airbag (310). The lower cylinder shell (1) is fixedly connected to a clamp (14), and the clamp (14) is fastened together by bolts.
2. A marine vessel pipe leak monitoring acoustic emission sensor guard according to claim 1, characterised in that: The sealing assembly (3) includes a threaded sleeve (31) rotatably mounted on the top of the upper cylinder shell (11), a screw (32) is threadedly connected to the threaded sleeve (31), and the sealing piston (33) is rotatably mounted on the bottom end of the screw (32). A gear (34) is fixedly connected to the outer wall of the threaded sleeve (31), and a worm (35) is provided next to the gear (34) and meshes with it for transmission. A turntable (36) is fixedly connected to the rotation center axis of the worm (35).
3. A marine vessel pipe leak monitoring acoustic emission sensor guard according to claim 1, wherein: The upper cylinder shell (11) has a first sink chamber (37) bent outward on the bottom side wall, and the first annular airbag (38) is fitted and fixed inside the first sink chamber (37). The lower cylinder shell (1) has a second sink chamber (39) bent inward on the top side wall, and the second annular airbag (310) is fitted and fixed inside the second sink chamber (39).
4. A marine vessel pipe leak monitoring acoustic emission sensor guard according to claim 1, wherein: The positioning component (2) includes a cross bracket (21) fixed inside the lower cylinder shell (1). The cross bracket (21) has four guide grooves (22) arranged in a cross shape. A slider (25) is slidably arranged in each guide groove (22). A clamping plate (27) is fixedly connected to each slider (25). The sensor body (12) is arranged inside the four clamping plates (27). A support plate (28) for supporting the sensor body (12) is fixedly connected to the inside of each clamping plate (27). Guide rods (23) are horizontally arranged below the opening of the guide groove (22). The ends of the guide rods (23) are fixed to the lower part of the cross bracket (21) through the side plate (24). The four sliders (25) are slidably arranged on the four guide rods (23). A first spring (26) is sleeved on each guide rod (23), and the first spring (26) is located outside the slider (25).
5. A marine vessel pipe leak monitoring acoustic emission sensor guard according to claim 1, wherein: The locking assembly (4) includes a fixed ring (41) that rotates on the outer wall of the lower cylinder (1). The fixed ring (41) has evenly distributed holes. Limiting rods (42) are slidably arranged in each hole. A second spring (44) is sleeved on each limiting rod (42). The second spring (44) is located between the lifting plate (43) and the fixed ring (41). The top of the limiting rods (42) is fixed to the lifting plate (43). The lifting plate (43) is located outside the lower cylinder (1). A first sealing gasket (45) is fixed on the lifting plate (43). A second sealing gasket (46) is arranged above the first sealing gasket (45). The second sealing gasket (46) is fixed below the port of the upper cylinder (11).
6. A protective cover for a marine pipeline leak monitoring acoustic emission sensor according to claim 1, characterized in that: The locking assembly (4) further includes right-angle baffles (47) evenly distributed and fixed on the outer wall of the lower cylinder (1) port. Each right-angle baffle (47) is provided with a fixed baffle (48), and the fixed baffles (48) are all fixed to the inner wall of the upper cylinder (11) port. The fixed baffles (48) can be staggered in the gaps between the right-angle baffles (47).
7. A marine vessel pipe leak monitoring acoustic emission sensor guard according to claim 1, wherein: The threading assembly (5) includes a threading tube (51) fixed to the side wall of the lower cylinder shell (1). The end of the threading tube (51) is tapered, and the tapered end of the threading tube (51) is evenly provided with shrinkage grooves (53). The outside of the threading tube (51) is threaded with a compression sleeve (52). The inside of the compression sleeve (52) is provided with an inclined surface for compressing the tapered end of the threading tube (51). A rubber sheath (54) is provided inside the threading tube (51), and the connecting wire (13) is provided inside the rubber sheath (54).