A waterproof structure for sensor cables inside a ballast water tank

Abstract

This utility model discloses a waterproof structure for a sensor cable inside a ballast water tank, including a ballast water tank, a sensor located inside the ballast water tank, and a waterproof cable connected to the sensor. A protective sleeve is installed outside the sensor, and an inner protective tube is installed outside the waterproof cable. The protective sleeve and the inner protective tube are adjacent end-to-end, and a sealing ring is installed at their connection. An outer protective tube is installed outside the protective sleeve and the inner protective tube. One end of the outer protective tube is connected to a tee fitting, and the other end is equipped with a waterproof component. The waterproof cable and the inner protective tube both pass through the waterproof component, and the waterproof cable is connected to a junction box. This utility model adds an extra protective sleeve and inner protective tube to the sensor and waterproof cable, and uses a well-sealed, painted, galvanized cable conduit as a supplementary means to prevent seawater immersion, corrosion, and impact. By setting up a waterproof component, the waterproof cable is led from the cable conduit inside the ballast tank to the empty tank, and then connected to a control box via a junction box with conventional shipyard cables to complete the sensor's detection function.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, specifically to a waterproof structure for sensor cables inside ballast water tanks. Background Technology

[0002] In shipbuilding, waterproofing is crucial for sensors. Sensors are relatively delicate electronic components that operate in various harsh and complex environments. If sensor waterproofing is inadequate, water ingress can frequently cause malfunctions, resulting in weak or even absent feedback signals, potentially leading to accidents. Therefore, sensor waterproofing has become a critical challenge that the shipbuilding industry must address.

[0003] Because sensors can be deployed in various locations, different waterproofing methods must be selected based on the specific installation location. In addition to considering the waterproof rating of the sensor's components, it's crucial to be aware of the seawater environment in which the sensor is installed. Seawater contains a large amount of salt and other corrosive substances; if these substances enter the sensor, they can corrode and damage electronic components, affecting the sensor's accuracy and stability. Furthermore, ships are exposed to the impact of waves and rain during navigation, making sensors more susceptible to external environmental influences and potential malfunctions. Utility Model Content

[0004] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a waterproof structure for sensor cables inside ballast water tanks.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a waterproof structure for a sensor cable inside a ballast water tank, comprising a ballast water tank, a sensor located inside the ballast water tank, and a waterproof cable connected to the sensor. Its innovation lies in: a protective sleeve is provided outside the sensor, and an inner protective tube is provided outside the waterproof cable. The protective sleeve and the inner protective tube are adjacent end-to-end, and a sealing ring is provided at their connection. An outer protective tube is provided outside the protective sleeve and the inner protective tube. One end of the outer protective tube is connected to a tee fitting, and the other end is provided with a waterproof component. Both the waterproof cable and the inner protective tube pass through the waterproof component, and the waterproof cable is connected to an external junction box. The waterproof component includes a seat flange, a blind flange, a waterproof sleeve, and a metal waterproof stuffing box. The seat flange and the blind flange are fixedly connected by bolts. The waterproof cable and the inner protective tube sequentially pass through the seat flange, the blind flange, the waterproof sleeve, and the metal waterproof stuffing box, and the metal waterproof stuffing box locks the inner protective tube. A glue injection cavity is opened in the center of the waterproof sleeve, and a glue injection hole is provided outside the glue injection cavity. The glue injection cavity is filled with waterproof glue.

[0006] Furthermore, the outer protective tube is a painted galvanized cable conduit.

[0007] Furthermore, the other two outlets of the tee fitting are connected to a vent pipe and an outboard valve, respectively, and the other end of the outboard valve is connected to the outboard pipe.

[0008] Furthermore, the sensor has an IP68 waterproof rating.

[0009] The beneficial effects of this utility model after adopting the above structure are as follows: This invention adds an extra protective sleeve and inner protective tube to the sensor and waterproof cable, and uses a well-sealed painted galvanized cable pipe as a supplementary means to prevent seawater immersion, corrosion and impact; by setting up a waterproof component, the waterproof cable is led from the cable pipe in the ballast tank to the empty tank, and connected to the control box with a junction box to complete the sensor's detection function; the sensor adopts an IP68 waterproof rating to ensure that it can work normally in harsh environments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged diagram of A in the middle; Figure 3 for Figure 1 Enlarged diagram of B in the diagram.

[0011] Explanation of reference numerals in the attached figures: 1 Ballast water tank, 2 Sensor, 3 Waterproof cable, 4 Protective sleeve, 5 Inner protective pipe, 6 Sealing ring, 7 Outer protective pipe, 8 Tee fitting, 9 Waterproof component, 91 Seat plate flange, 92 Blind flange, 93 Waterproof sleeve, 931 Glue injection cavity, 932 Glue injection hole, 933 Waterproof glue, 94 Metal waterproof stuffing box, 10 Junction box, 11 Vent pipe, 12 Row of outboard valves, 13 Row of outboard pipes. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0014] See Figure 1-3A waterproof structure for a sensor cable inside a ballast water tank includes a ballast water tank 1, a sensor 2 located inside the ballast water tank, and a waterproof cable 3 connected to the sensor. A protective sleeve 4 is installed outside the sensor 2, and an inner protective tube 5 is installed outside the waterproof cable 3. The protective sleeve 4 and the inner protective tube 5 are adjacent end-to-end, and a sealing ring 6 is installed at their connection. An outer protective tube 7 is installed outside the protective sleeve 4 and the inner protective tube 5. One end of the outer protective tube 7 is connected to a tee fitting 8, and the other end is equipped with a waterproof component 9. The waterproof cable 3 and the inner protective tube 5 both pass through the waterproof component 9, and the waterproof cable 3 is connected to a junction box 10. Specifically, the sensor 2 and the waterproof cable 3 are inherently waterproof. The additional protective sleeve 4 and inner protective tube 5, along with the outer protective tube 7, provide double-layer protection to prevent seawater immersion corrosion and impact. The sensor 2 includes a draft sensor, a pressure sensor, a temperature sensor, a level sensor, and other sensors.

[0015] The waterproof assembly 9 includes a seat flange 91, a blind flange 92, a waterproof sleeve 93, and a metal waterproof stuffing box 94. The seat flange 91 and the blind flange 92 are fixedly connected by bolts. The waterproof cable 3 and the inner protective tube 5 pass through the seat flange 91, the blind flange 92, the waterproof sleeve 93, and the metal waterproof stuffing box 94 in sequence, and the metal waterproof stuffing box 94 locks the inner protective tube 5. The waterproof cable 3 and the inner protective tube 5 are led from the outer protective tube 7 of the ballast water tank 1 to the empty tank through the seat flange 91, the blind flange 92, the waterproof sleeve 93, and the metal waterproof stuffing box 94. The junction box 7 is used to connect to the control box with conventional shipyard cables to complete the sensor detection function.

[0016] A glue injection cavity 931 is formed in the center of the waterproof sleeve 93, and a glue injection hole 932 is provided on the outside of the glue injection cavity 931. The glue injection cavity 932 is filled with waterproof glue 933. By filling with waterproof glue 933, the waterproof performance between the waterproof sleeve 93 and the inner protective tube 5 can be further improved.

[0017] In this embodiment, the outer protective pipe 5 is a galvanized painted cable pipe. Prolonged immersion and corrosion in seawater in the ballast water tank 1 can cause instability or even damage to the internal components of electronic components. Therefore, the use of a galvanized painted cable pipe can resist the immersion, corrosion and impact of seawater, providing an extra layer of waterproof protection for the sensor 2 and the waterproof cable 3. The galvanized painted cable pipe 4 is made of a better and more rigid material, and can better resist external pressure and mechanical damage.

[0018] In this embodiment, the other two outlets of the three-way fitting 8 are connected to the vent pipe 11 and the outboard valve 12, respectively, and the other end of the outboard valve 12 is connected to the outboard pipe 13. The outboard pipe 12 and the outboard valve 11 are used to flow from outside the ship to the sensor for monitoring and ventilation through the three-way fitting 8, thus serving a dual purpose.

[0019] In this embodiment, sensor 2 has an IP68 waterproof rating. This further ensures that it can operate normally in harsh environments.

[0020] This invention is designed for sensors installed in ballast tank 1, making the sensors work more reliably and for longer periods, thus making ship operation safer and more reliable. It solves the problem at its root, and the technology is simple and feasible, and has been successfully applied in bulk carrier projects.

[0021] This utility model comprises a complete set of components including an outer hull pipe, an outer hull valve, a tee fitting, a vent pipe, an outer protective pipe (painted galvanized cable pipe), a sensor, a waterproof cable, a protective sleeve, an inner protective pipe, a seat flange, a blind flange, a waterproof sleeve, a metal stuffing box, a junction box, and marine cables. It emphasizes the waterproof performance of the sensor, adopts effective waterproof measures, and ensures that the sensor on the ship can work stably and reliably in harsh environments, thus providing a guarantee for the safe operation of the ship.

[0022] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A sensor cable waterproof structure in a ballast water tank, comprising a ballast water tank, a sensor located in the ballast water tank, and a waterproof cable connected with the sensor, characterized in that: The sensor is externally fitted with a protective sleeve, and the waterproof cable is externally fitted with an inner protective tube. The protective sleeve and the inner protective tube are adjacent end to end, and a sealing ring is provided at the connection point. An outer protective tube is provided outside the protective sleeve and the inner protective tube. One end of the outer protective tube is connected to a tee fitting, and the other end is fitted with a waterproof component. The waterproof cable and the inner protective tube both pass through the waterproof component, and the waterproof cable is externally connected to a junction box. The waterproof component includes a base plate flange, a blind flange, a waterproof sleeve, and a metal waterproof stuffing box. The base plate flange and the blind flange are fixedly connected by bolts. The waterproof cable and the inner protective tube pass through the base plate flange, the blind flange, the waterproof sleeve, and the metal waterproof stuffing box in sequence, and the metal waterproof stuffing box locks the inner protective tube. A glue injection cavity is opened in the center of the waterproof sleeve, and a glue injection hole is provided outside the glue injection cavity. The glue injection cavity is filled with waterproof glue.

2. A sensor cable waterproof structure in a ballast water tank according to claim 1, characterized in that: The outer protective pipe is a painted galvanized cable pipe.

3. A sensor cable waterproof structure in a ballast water tank according to claim 1, characterized in that: The other two outlets of the tee fitting are connected to a vent pipe and an outboard valve, respectively, and the other end of the outboard valve is connected to the outboard pipe.

4. A sensor cable waterproof structure in a ballast water tank according to claim 1, characterized in that: The sensor has an IP68 waterproof rating.

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