Pressure-resistant watertight wiring device

Abstract

The utility model relates to a pressure-resistant watertight wiring device which comprises a watertight wiring box, a watertight connector and a watertight cable. A box body of the watertight junction box is cylindrical, a sensor watertight cable core wire and a cabin entering watertight cable core wire are connected through a preset wiring terminal in the watertight junction box, and the watertight junction box is sealed through a cover plate and a flange. The watertight junction box is connected with the cable through a watertight connector, and the watertight connector has longitudinal watertight capability; the watertight junction box has two parts to be sealed: air test holes between the box body and the cover plate of the watertight junction box and on the cover plate; the watertight junction box is provided with four fixing corners and is fixed on the corresponding base through stainless steel M10 bolts, spring washers and nuts. The watertight junction device adopts an integrated design, the watertight junction box and the cable are connected through the watertight connector, the number of parts, needing to be sealed, of the watertight junction box and the number of box opening times are reduced, the sealing state time of the junction box is prolonged, and the watertight junction device has good pressure resistance and watertightness.

Description

Technical Field

[0001] The utility model belongs to the field of ship equipment, relates to a wiring device, and particularly relates to a pressure-resistant watertight wiring device. Background Technique

[0002] Sensors are installed on a ship to pick up the external noise signal of the ship, and the picked-up noise signal is connected into the cabin through an in-cabin cable, and is bundled and connected to the system data acquisition and conditioning equipment by a junction box in the cabin. When multiple sensors are connected outside the ship's hull, if the sensor cable and the in-cabin cable are connected by a traditional mechanical extrusion sealing method, water leakage will occur due to seawater immersion and seawater extrusion, which will directly affect the acquisition of the noise signal. Aiming at the fact that the traditional mechanical extrusion sealing method is difficult to meet the watertight requirements under the conditions of seawater immersion and extrusion, a pressure-resistant watertight wiring device needs to be designed, which not only realizes the connection of the sensor cable and the in-cabin cable, but also ensures that the watertight wiring device is reliably sealed under the conditions of seawater immersion and pressure. Summary of the Invention

[0003] The purpose of the present invention is to provide a pressure-resistant watertight wiring device to solve the problem of water leakage caused by seawater immersion and seawater pressure in the connection of the sensor watertight cable and the in-cabin watertight cable, so as to ensure that the external noise signal of the ship that can be picked up by the sensor is connected into the ship's hull through the in-cabin cable and is bundled and connected to the system data acquisition and conditioning equipment by a junction box in the cabin.

[0004] To achieve the above purpose, the pressure-resistant watertight wiring device in the present invention of the utility model is composed of a watertight junction box, a watertight connector and a watertight cable; the watertight junction box includes two parts: a box body and a cover plate. The box body is cylindrical. Inside the box body, the core wires of the sensor watertight cable and the in-cabin watertight cable are connected through preset wiring terminals, and the box body is sealed by the cover plate and a flange; the watertight junction box is connected to the sensor watertight cable and the in-cabin watertight cable through a watertight connector, and the watertight connector has longitudinal watertight ability; there are two parts to be sealed on the watertight junction box: between the box body and the cover plate of the watertight junction box, and the test air hole on the cover plate; the watertight junction box has a total of 4 fixed corners, and the watertight junction box is fixed on the corresponding base with stainless steel M10 bolts, spring washers and nuts.

[0005] For the above-mentioned pressure-resistant watertight wiring device, the box body of the watertight junction box is integrally formed by argon arc welding. The cover plate of the watertight junction box is connected to the box body by a circular flange. Stainless steel M6 hexagon socket head cap screws are used to fasten the cylindrical barrel through the bolt holes on the cover plate. The sealing surface adopts a groove and a trapezoidal groove, and a double-layer sealing structure with an O-ring is used for sealing. The material of the O-ring is fluororubber; the cover plate is provided with one test air hole for pressure detection, and the test air hole is sealed with an O-ring; the material of the watertight junction box is 316L stainless steel; the thicknesses of the cover plate and the barrel are both 15mm.

[0006] A pressure-resistant watertight wiring device as described above, the watertight connector includes a 20-core watertight connector and a 4-core watertight connector. The number of 20-core watertight connectors is two, which are used to connect the watertight junction box and the in-cabin watertight cable. The number of 4-core watertight connectors is the number of sensors to be connected. The 4-core watertight connector is used to connect the watertight junction box and the sensor watertight cable; the watertight connector socket is installed on the base on the circumferential curved surface parallel to the bottom surface of the cylindrical watertight junction box by screws, and an O-ring seal is installed between the watertight connector socket and the base. The watertight connector plug is vulcanized and sealed with the sensor watertight cable and the in-cabin watertight cable; the watertight connector uses a threaded connection. When the plug and the socket are inserted, the five keys on the plug housing are aligned with the corresponding five key grooves on the socket housing, and the plug can be inserted correctly through the guidance of the five key grooves to prevent misinsertion; there is an O-ring inside the watertight connector, and the shell material is 316L stainless steel.

[0007] A pressure-resistant watertight wiring device as described above, the watertight cable includes a sensor watertight cable and an in-cabin watertight cable; the watertight cable is divided into a core wire, an inner sheath, an armor layer, an outer sheath, and a core wire insulation layer from the inside to the outside.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: The watertight junction box adopts an integrated design, and the watertight junction box and the watertight cable are connected through a watertight connector, reducing the sealed parts of the watertight junction box and the number of times of opening the box, extending the sealing state time of the junction box, ensuring the reliable sealing of the watertight junction box, and having good pressure resistance and watertightness. Description of the Drawings

[0009] Figure 1 It is a composition diagram of a pressure-resistant watertight wiring device

[0010] Figure 2 It is a schematic diagram of the watertight junction box

[0011] Figure 3 It is a front view of the watertight wiring

[0012] Figure 4 It is a top view of the watertight junction box

[0013] Figure 5 It is a schematic diagram of the interface of the watertight junction box

[0014] Figure 6 It is a schematic diagram of the test air hole plugging structure

[0015] Figure 7 It is a design drawing of the in-cabin watertight cable

[0016] Figure 8 It is a design drawing of the sensor watertight cable

[0017] Figure 9 It is a diagram of a 20-pin watertight connector socket

[0018] Figure 10 It is a diagram of a 20-pin watertight connector plug

[0019] Figure 11 It is a diagram of a plug for a watertight connector socket

[0020] Figure 12 It is a diagram of a plug for a watertight connector plug

[0021] In the figure: 1. 20-pin watertight connector; 2. 4-pin watertight connector; 3. Sensor watertight cable; 4. Watertight cable entering the cabin; 5. Fixed angle; 6. Plug for the test air hole; 7. Bolt hole; 8. Core wire; 9. Inner sheath; 10. Armor layer; 11. Outer sheath; 12. Insulated core wire Specific implementation manners

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners: As Figure 1 shown, the utility model includes a watertight junction box, a 20-pin watertight connector 1, a 4-pin watertight connector 2, a sensor watertight cable 3, and a watertight cable 4 entering the cabin. The schematic diagram of the watertight junction box is as Figure 2 , and the official diagram of the watertight junction box is as Figure 3 shown. The box body is cylindrical, with a height of 125 mm (excluding bolts), the diameter of the cover plate and flange is 310 mm (excluding the part of the watertight connector), and the overall external dimension after the installation of the connector socket is not more than 380 mm in diameter. The weight of the watertight junction box ≤ 36 kg. The watertight junction box has a total of 18 sealing ports, among which 2 large sealing ports are equipped with 20-pin watertight connector sockets, which are connected to the watertight cable entering the cabin vulcanized with a 20-pin watertight connector plug, and the remaining 16 small sealing ports are equipped with 4-pin watertight connector sockets, which are connected to the sensor watertight cable vulcanized with a 4-pin watertight connector plug. The material of the watertight junction box is 316L type stainless steel, and the thickness of both the cover plate and the cylinder body is 15 mm. The cover plate of the watertight junction box is designed with a double O-ring structure seal, and the sealing ring uses a fluororubber O-ring, with models and to ensure that the maximum working pressure of the watertight junction box is not less than 7 MPa. The top view of the watertight junction box is as Figure 4 shown. The watertight junction box has a total of 4 fixed angles 5, and the watertight junction box is fixed on the mounting feet with stainless steel M10 bolts. The fixed angle and the bottom of the watertight junction box adopt a double-insurance fixing design scheme of bolt fixing and welding fixing to prevent the fixed angle from loosening or even falling off in the environment of long-term seawater immersion, severe vibration and scouring. The cover plate of the watertight junction box is fastened to the cylinder body through the bolt hole 7 with stainless steel M6 internal hexagonal bolts. The core wires of the sensor watertight cable and the watertight cable entering the cabin in the watertight junction box are connected through preset terminal blocks. The schematic diagram of the interface definition of the watertight junction box is as Figure 5As shown in the figure, two in-cabin watertight cables are externally connected through two 20-core watertight connector sockets 1, and 16 sensors can be externally connected through 16 4-core watertight connector sockets 2. There is a test air hole 7 on the cover plate. Gas pressure is applied through this test air hole to ensure the maximum working pressure of the watertight junction box. The test air hole uses Figure 6 the test air hole plugging and O-ring seal in

[0023] The cable is divided into core wires, core wire insulation layers, inner sheaths, armor layers, and outer sheaths from the inside out. A mixed watertight material is extruded and filled into the surface of the core wire and the gaps; ethylene propylene rubber material is extruded and filled on the surface of the conductor after filling the watertight material, and is extruded and compacted to form an insulation layer; an inner protective sleeve is formed on the insulation layer by extruding and continuously vulcanizing the mixed watertight material; a tinned copper wire multi-strand braided armor layer is used, and the mixed watertight material is filled into the braided gaps by an extrusion tooling; a chlorosulfonated polyethylene rubber material is extruded outside the armor layer to form an outer sheath, and a continuous vulcanization process is used for tight sealing. The model specification of the in-cabin watertight cable is JKMEHP8H-65-19x1.0, which consists of 19 1.0mm 2 control power lines, has a double-layer sheath, and is braided with tinned copper wires in the middle, as Figure 7 shown. The model specification of the sensor watertight cable is JKMEH8H-65-3x1.5, which consists of 3 1.5mm 2 control power lines, has a double-layer sheath, and is braided with tinned copper wires in the middle as Figure 8 shown.

[0024] SHAKT4-16LK-S / SHAKGZ4-16LZ-M type 4-core watertight connectors and SHART20-16LK-S / SHARGZ20-16LZ-M type 20-core watertight connectors are selected for the watertight connectors. See Figure 8 for the 20-core watertight connector socket diagram, and see Figure 9 for the 20-core watertight connector plug.

[0025] When the socket of the watertight connector is not connected to the watertight connector plug on the sensor watertight cable, the watertight connector socket plug in Figure 11 is used for sealing; when the plug on the sensor watertight cable is not connected to the socket on the watertight connector, the watertight connector plug plug in Figure 12 is used for sealing.

[0026] The above is an example based on the specific implementation of the present utility model. Through the above description, relevant staff can make various changes and modifications completely within the scope of the idea of this utility model technology without deviation. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pressure-resistant watertight wiring device, characterized in that: A pressure-resistant watertight wiring device consists of a watertight wiring box, a watertight connector and a watertight cable; the watertight wiring box includes a box body and a cover plate, the box body is cylindrical, the sensor watertight cable core wire and the cabin watertight cable core wire are connected through preset wiring terminals in the box body, and the box body is sealed by the cover plate and a flange; the watertight wiring box and the sensor watertight cable and the cabin watertight cable are connected through a watertight connector, and the watertight connector has longitudinal watertight capability; there are two places where the watertight wiring box needs to be sealed: between the watertight wiring box body and the cover plate, and the air test hole on the cover plate; the watertight wiring box has a total of 4 fixed corners, and the watertight wiring box is fixed to the corresponding base with stainless steel M10 bolts, spring washers and nuts.

2. The pressure-resistant watertight wiring device according to claim 1, characterized in that: The watertight junction box is welded into an integral structure by argon arc welding. The cover plate of the watertight junction box is connected to the box body by a circular flange. Stainless steel M6 hexagon socket bolts are used to fasten the cylindrical body through the bolt holes on the cover plate. The sealing surface adopts grooves and trapezoidal grooves, and is sealed with an O-type rubber ring double-layer sealing structure. The O-type sealing ring is made of fluororubber. The cover plate is provided with a test hole for pressure detection, and the test hole is sealed with an O-ring; the watertight junction box is made of 316L stainless steel; the thickness of the cover plate and the cylinder is 15mm.

3. The pressure-resistant watertight wiring device according to claim 1, characterized in that: The watertight connector includes a 20-core watertight connector and a 4-core watertight connector. There are two 20-core watertight connectors for connecting the watertight junction box and the watertight cable entering the cabin. The number of 4-core watertight connectors is the number of sensors that need to be connected. The 4-core watertight connector is used to connect the watertight junction box and the watertight cable of the sensor. The watertight connector socket is installed on the base on the circular curved surface parallel to the bottom surface of the cylindrical watertight junction box by screws. An O-shaped sealing ring is installed between the watertight connector socket and the base. The watertight connector plug is vulcanized and sealed with the sensor watertight cable and the watertight cable entering the cabin. The watertight connector adopts a threaded connection. When the plug and the socket are plugged in, the five keys of the plug shell are aligned with the corresponding five-key grooves of the socket shell. After being guided by the five-key grooves, the plug can be inserted to prevent mis-insertion. There is an O-ring inside the watertight connector, and the shell material is 316L stainless steel.

4. The pressure-resistant watertight wiring device according to claim 1, characterized in that: Watertight cables include sensor watertight cables and cabin watertight cables; watertight cables are divided into core wire, inner sheath, armor layer, outer sheath and core wire insulation layer from the inside to the outside.

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