WO2019104929A1 - 一种水下承拉电转环 - Google Patents

一种水下承拉电转环 Download PDF

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Publication number
WO2019104929A1
WO2019104929A1 PCT/CN2018/082587 CN2018082587W WO2019104929A1 WO 2019104929 A1 WO2019104929 A1 WO 2019104929A1 CN 2018082587 W CN2018082587 W CN 2018082587W WO 2019104929 A1 WO2019104929 A1 WO 2019104929A1
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WO
WIPO (PCT)
Prior art keywords
cable
hole
cylinder
sealing
upper cover
Prior art date
Application number
PCT/CN2018/082587
Other languages
English (en)
French (fr)
Inventor
陈永华
刘庆奎
徐永平
姜静波
倪佐涛
李晓龙
涂登志
Original Assignee
中国科学院海洋研究所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国科学院海洋研究所 filed Critical 中国科学院海洋研究所
Publication of WO2019104929A1 publication Critical patent/WO2019104929A1/zh
Priority to ZA2020/03090A priority Critical patent/ZA202003090B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/26—Anchors securing to bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/38—Anchors pivoting when in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
    • F16C19/12—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly for supporting the end face of a shaft or other member, e.g. footstep bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication

Definitions

  • the invention relates to an underwater anchoring device, in particular to an underwater tensile electric rotating ring.
  • the ocean is rich in resources. Marine biological resources, seawater chemical resources, marine mineral resources, marine energy, and maritime shipping traffic all have a major impact on the survival and development of civilization and the revitalization and progress of world civilization. In addition to the abundant marine resources, the vast sea area is also a channel for transportation and a natural barrier against the invasion of foreign enemies.
  • the development and utilization of the ocean and the development of the marine industry are closely related to the development of human civilization.
  • the fixed-point ocean observing system is an important equipment for marine development and ocean observation research. It is generally composed of a bottom anchor, anchor cable and connecting members to anchor the surface or underwater floating platform to the workstation. Power supply and communication should be carried out between the marine floating platform and the equipment on the anchor system.
  • the floating platform and anchor system of the ocean will be twisted on the anchor cable under the action of wind, waves and current.
  • An underwater electric rotating ring is installed on the anchor system for connection, which can communicate between the floating platform and the anchor system, and can also remove the torsional load, and prevent the system from being damaged due to the twisting while communicating and supplying power.
  • Anchor chains are often used in anchors for ships, large marine floating platforms and navigation aids.
  • the two links of the chain swing ring are connected by a rotating shaft, and the shaft end is provided with a shoulder to stop.
  • the anchor chain swivel has a large rotational friction coefficient and can be rotated under a large torque; even if a slightly complicated load-bearing swivel with a bearing is installed, power supply and signal transmission cannot be performed.
  • the observation equipment is often mounted on the anchor system, and the buoyancy platform is required to supply power to the observation equipment.
  • an object of the present invention is to provide an underwater tensile electric rotating ring.
  • the underwater tensile electric rotating ring is supported by bearings, has internal oil filling, has small rotational friction coefficient, and can rotate loosely under a small torque, and protects the anchor system of the marine floating observation platform from being damaged by torsion; the underwater tensile electric rotating ring
  • the slip ring is located inside the sealed housing and can transmit signals and power under torsion.
  • the invention comprises an outer sealing shell, an inner rotating bearing transmission device and a cable protection sealing device, wherein the outer sealing shell comprises a bottom bracket, a cylinder body and an upper sealing cover, one end of the bottom bracket is located outside the cylinder body, and the other end is a belt a bottom support center shaft having a bottom threading hole and sealingly and rotatably connected to one end of the cylinder body, the other end of the cylinder body being sealingly connected with one end of the upper cover;
  • the inner rotating load-bearing transmission device includes a limit a collar, a bearing, an open nut and a slip ring, wherein the middle shaft of the bottom is rotatably connected to the inner wall of the cylinder through a bearing, and the upper and lower ends of the bearing are respectively provided with an open nut threadedly connected with the middle shaft of the bottom and sleeved on the shaft a limiting collar for supporting the bearing on the middle shaft of the bottom, the sliding ring is connected to the middle shaft of the bottom;
  • one end of the bottom plate is provided with a lower ring eye for connecting with the anchoring member, and the bottom end of the bottom plate of the other end is axially opened with the bottom threading hole, and one end of the bottom bracket is Opening a cable entry hole communicating with a lower end of the bottom threading hole, the cable entering the cable hole, the cable protection sealing device is connected to the cable hole, the bottom threading hole
  • the upper end is a slip ring seat that accommodates the slip ring;
  • the bottom shaft of the bottom sleeve is provided with a lubricating wear piece, and the lubricating wear piece is located between one end of the bottom bracket and one end of the cylinder body, and the lower end of the bottom shaft of the bottom bracket is disposed under the lubricating wear piece.
  • the lower eyelet sleeve is provided with a nylon sleeve for avoiding electrochemical corrosion caused by the metal material
  • the nylon sleeve comprises a sleeve and a cylinder cover
  • the sleeve is a hollow structure
  • the axial section is a “T” shape, and is connected with the cylinder cover.
  • One end is provided with a thread; the sleeve is inserted from one side of the lower eye, and is screwed to the sleeve on the other side of the lower eye, the anchor is connected to the nylon sleeve on the lower eye;
  • the cylinder body is a hollow structure with two ends open, and a cylinder oil seal seat is arranged on one end of the cylinder wall, and the skeleton oil seal seat is provided with a skeleton which is sleeved on the middle shaft of the bottom bracket and forms a seal with the center shaft of the bottom support.
  • An oil seal; a wall of the cylinder at the other end of the cylinder is provided with a connecting screw hole for connecting with the upper cover;
  • One end of the upper cover is an inner hollow structure, and respectively has an oil inlet hole for injecting a liquid into the inner space and a bolt hole for connecting with the cylinder, and one end of the upper cover is respectively provided with an upper cover a threading hole and a cable exit hole, wherein a lower end of the upper cover threading hole communicates with the inner space, and an upper end communicates with the cable exit hole, and the cable is sequentially passed through the upper cover threading hole and the cable exit hole,
  • the cable protection sealing device is connected to the cable outlet; the other end of the upper cover is provided with an upper ring for connecting with the anchoring device;
  • the upper eyelet sleeve is provided with a nylon sleeve for avoiding electrochemical corrosion caused by the metal material
  • the nylon sleeve comprises a sleeve and a cylinder cover
  • the sleeve is a hollow structure
  • the axial section is a “T” shape, and is connected with the cylinder cover.
  • One end is provided with a thread; the sleeve is inserted from one side of the upper eye, and is screwed to the sleeve on the other side of the upper eye, the anchor is connected to the nylon sleeve on the upper eye;
  • the limiting collar includes a copper ring located inside and a steel ring located at the outer portion, wherein the middle shaft of the bottom plate passes through the inner hole of the copper ring, and the upper and lower ends of the limiting collar are respectively provided with sleeves a gasket on the middle shaft of the shoe, the upper end gasket is located between the bearing and the limit collar, and the lower end gasket is located between the bearing and the bottom of the cylinder body;
  • the cable protection sealing device comprises a compression hollow bolt, a sealing rubber pad and a cable protection screw, the cable protection screw is provided with a central hole through which the cable or the cable is passed, and the cable protects one side of the screw
  • One end of the bottom bracket or the other end of the upper cover is threadedly sealed, and the other side is located at one end of the bottom bracket or the other end of the upper cover
  • the sealing rubber pad is accommodated on one side of the center hole, and is sleeved Sealing is achieved on the incoming or outgoing cable, the pressed hollow bolt is received on the other side of the central hole, and the internal thread provided on one side of the central hole is threaded to press and seal the sealing pad, the cable or The outgoing cable is passed through the compressed hollow bolt;
  • a spring washer sleeved on the central shaft of the base is disposed between the bearing and the open nut.
  • the outer sealing housing of the present invention fixes the slip ring, and the slip ring is immersed in the sealed lubricating oil to perform communication and power transmission under the condition of rotation.
  • the outer sealing shell of the invention is filled with sealing lubricating oil, and is sealed by the skeleton oil seal, the sealing ring and the oil hole sealing ring, the oil is not leaked, the water is not infiltrated, and the bearing is fully lubricated. Further, when the present invention is applied to underwater, the pressure difference between the inside and the outside is almost zero, and the external pressure is prevented from deforming the sealed casing.
  • the thrust bearing of the present invention is subjected to axial load, is immersed in the lubricating oil, has a small coefficient of rotational friction, and is lubricated with a PTFE material with self-lubricating properties between the bottom bracket and the cylinder.
  • the wear-resistant sheet further reduces the coefficient of friction, ensuring that the present invention rotates loosely under a small torque.
  • the structural parts exposed in contact with water of the present invention are made of stainless steel material resistant to seawater corrosion, and the lower ring eye on the bottom support and the upper ring eye on the upper cover are provided with a nylon sleeve. In order to isolate the present invention from the connected anchoring members, electrochemical corrosion caused by possible different metal materials is avoided.
  • the eye of the bottom bracket and the upper cover of the invention are respectively connected with two sections of the anchor structure, and when the upper and lower sections of the anchorage structure have a torsional load, the bottom and the upper cover can be Reverse rotation, remove the torsional load.
  • the invention has different size series specifications, which can meet the requirements of unloading different anchor loads and transmitting different currents.
  • Figure 1 is a schematic view showing the external structure of the present invention
  • Figure 2 is a schematic view of the internal structure of the present invention.
  • Figure 3 is a cross-sectional view showing the structure of the shoe of the present invention.
  • Figure 4 is a cross-sectional view showing the structure of the cylinder of the present invention.
  • Figure 5 is a cross-sectional view showing the structure of the upper cover of the present invention.
  • Figure 6 is a cross-sectional view showing the structure of the limit collar of the present invention.
  • Figure 7 is a cross-sectional view showing the structure of the cable protection screw of the present invention.
  • Figure 8A is a front view showing the structure of a nylon sleeve of the present invention.
  • Figure 8B is a side cross-sectional view of the nylon sleeve of the present invention.
  • 1 is nylon sleeve
  • 2 is bottom bracket
  • 3 is lubrication wear sheet
  • 4 is skeleton oil seal
  • 5 is cylinder
  • 6 is limit collar
  • 7 is gasket
  • 8 is thrust ball bearing
  • 9 is bomb Pad
  • 10 is the sealing ring
  • 11 is the connecting bolt
  • 12 is the upper cover
  • 13 is the open nut
  • 14 is the fixing bolt
  • 15 is the slip ring
  • 16 is the outgoing cable
  • 17 is the compression hollow bolt
  • 20 is an O-ring
  • 21 is a sealing bolt
  • 22 is an incoming cable
  • 23 is a sealing lubricating oil
  • 101 is a sleeve, and 102 is a cylinder cover;
  • 201 is a lower ring eye
  • 202 is a cable entry hole
  • 203 is a tray
  • 204 is a bottom support center shaft
  • 205 is a bottom support threading hole
  • 206 is a slip ring seat
  • 207 is a positioning thread
  • 501 is a skeleton oil seal seat, 502 is a cylinder wall, and 503 is a connection screw hole;
  • 601 is a copper ring
  • 602 is a steel ring
  • 603 is an inner hole
  • 1201 is a sealing ring groove
  • 1202 is a bolt hole
  • 1203 is an oil inlet hole
  • 1204 is an upper cover threading hole
  • 1205 is a cable opening hole
  • 1206 is an upper ring eye
  • 1901 is an O-ring placing groove
  • 1902 is an external thread
  • 1903 is an internal thread
  • 1904 is a center hole
  • the present invention comprises an outer sealed casing, an inner rotating bearing transmission device and a cable protection sealing device, wherein the outer sealing casing comprises a bottom support 2, a lubricating wear piece 3, a skeleton oil seal 4, and a cylinder.
  • the body 5, the sealing ring 10, the connecting bolt 11 and the upper sealing cover 12, the internal rotating load-bearing transmission device comprises a bottom bracket central shaft 204, a spacer 7, a limit collar 6, a thrust ball bearing 8, an opening nut 13 and a slip ring 15
  • the cable protection sealing device includes a cable protection screw 19, a compression hollow bolt 17 and a sealing rubber pad 18.
  • one end of the shoe 2 is located outside the cylinder 5, and the other end is a bottom center shaft 204 having a bottom threading hole 205, and the bottom center shaft 204 is a cylinder.
  • One end of the 5 is inserted and sealed and rotationally connected to the cylinder 5 through the bearing and the skeleton oil seal 4.
  • the bottom shaft 204 is rotatably connected to the inner wall of the cylinder 5 through a bearing (the bearing of the embodiment is a thrust ball bearing 8), and the upper and lower ends of the bearing are respectively provided with an open nut 13 which is screwedly connected with the bottom shaft 204.
  • the limit collar 6 supporting the bearing is sleeved on the bottom shaft 204 of the base.
  • a spring pad 9 sleeved on the center shaft 204 of the shoe is disposed between the bearing and the opening nut 13.
  • One end of the bottom bracket 2 is provided with a lower eyelet 201 for connecting with the anchoring member, and the bottom end of the bottom bracket 204 of the other end is axially opened with a bottom threading hole 205, and one end of the bottom bracket 2 is opened and provided with the bottom
  • the cable feed hole 202 is connected to the lower end of the threading hole 205.
  • the cable entry hole 202 has an internal thread and penetrates perpendicularly with the bottom threading hole 205.
  • the cable entry 22 is inserted through the cable entry hole 202.
  • the cable entry hole 202 is connected at the cable hole 202.
  • the cable protection sealing device, the upper end of the bottom threading hole 205 is a sliding ring seat 206, and the sliding ring 15 is received in the sliding ring seat 206, and is fixed to the bottom bracket central shaft 204 by a fixing bolt 14.
  • the bottom threading hole 205 and the slip ring seat 206 are both located at the center of the center axis 204 of the shoe.
  • the bottom shaft 204 of the bottom bracket is sleeved with a lubricating wear piece 3, and the lubricating wear piece 3 is located between one end of the bottom bracket 2 and one end of the cylinder 5, and the lower end of the bottom shaft 204 is disposed under the lubricating wear piece 3.
  • the tray for lubricating the wear-resistant sheet 3 is supported, and the upper end outer surface of the bottom shaft 204 is provided with a positioning thread 207 which is screwed to the opening nut 13.
  • the lubricating wear-resistant sheet 3 of the present embodiment is a lubricating gasket made of a polytetrafluoroethylene material having self-lubricating properties, further reducing the friction coefficient between the bottom bracket 2 and the cylinder 5, and ensuring that the present invention has a small torque. Rotate down quickly.
  • the lower ring eye 201 is provided with a nylon sleeve 1 for isolating the anchoring member and the metal base 2 to avoid electrochemical corrosion caused by possible different metal materials.
  • the nylon sleeve 1 comprises a sleeve 101 and a cylinder cover 102.
  • the sleeve 101 has a hollow structure with a "T" shape in an axial section, and one end connected to the cylinder cover 102 is provided with a thread; the sleeve 101 is formed by a lower eye 201 The side is inserted, threadedly connected to the can 102 on the other side of the lower eye 201, and the anchor is attached to the nylon sleeve 1 on the lower eye 201.
  • the other end of the cylindrical body 5 is sealingly connected to one end of the upper cover 12, and the cylindrical body 5 is a hollow structure with open ends.
  • the cylindrical wall 502 at one end is provided with a skeleton oil seal seat 501.
  • the oil seal seat 501 is provided with a skeleton oil seal 4 which is sleeved on the bottom shaft 204 of the bottom and forms a seal with the bottom shaft 204.
  • the cylinder wall 502 at the other end of the cylinder 5 is provided with a connection screw for connecting with the upper cover 12. Hole 503.
  • One end of the upper cover 12 is an inner hollow structure, and respectively has an oil inlet hole 1203 for injecting a liquid into the inner space and a bolt hole 1202 for connecting with the cylinder 5, and the oil inlet hole 1203 is inserted into the sealing bolt after injecting the filling liquid. 21.
  • the slip ring 15 and the bearing are both immersed in the filling liquid.
  • the bolt holes 1202 on the upper cover 12 are the same as the number of the connection screw holes 503 on the cylinder 5, and are in one-to-one correspondence, and the cylinder 5 and the upper cover 12 are connected by the connection bolts 11.
  • the outer surface of one end of the upper cover 12 is provided with a sealing ring groove 1201.
  • the sealing ring groove 1201 is provided with a sealing groove 10, and the upper sealing cover 12 and the cylindrical body 5 are sealed by the sealing groove 10;
  • the upper end of the shaft is further provided with an upper cover threading hole 1204 and a cable exit hole 1205.
  • the upper cover threading hole 1204 is located at the center of the middle shaft of the upper cover, and the cable opening 1205 has an internal thread and is threaded with the upper cover.
  • the hole 1204 is vertically penetrated; the lower end of the upper cover threading hole 1204 communicates with the inner space, the upper end communicates with the cable exit hole 1205, and the cable 16 is sequentially passed through the upper cover threading hole 1204 and the cable exit hole 1205.
  • a cable protection seal is attached to the 1205.
  • the other end of the upper cover 12 is provided with an upper eye 1206 for attachment to the anchor.
  • the upper ring 1206 is provided with a nylon sleeve 1 for isolating the anchoring member and the metal upper cover 12 to avoid electrochemical corrosion caused by possible different metal materials.
  • the nylon sleeve 1 includes a sleeve 101 and a cylinder cover 102.
  • the sleeve 101 has a hollow structure with a "T" shape in an axial section, and one end connected to the cylinder cover 102 is provided with a thread; the sleeve 101 is formed by a ring eye 1206. The side is inserted into a threaded connection with the sleeve 102 on the other side of the upper eye 1206, and the anchor is attached to the nylon sleeve 1 on the upper eye 1206.
  • the limiting collar 6 includes a copper ring 601 located inside and a steel ring 602 located outside.
  • the bottom shaft 204 of the bottom plate passes through the inner hole 603 of the copper ring 601.
  • the upper and lower ends of the collar 6 are respectively provided with a spacer 7 sleeved on the middle shaft 204 of the bottom bracket, the spacer 7 at the upper end is located between the bearing and the limit collar 6, and the spacer 7 at the lower end is located at the bearing and the cylinder Between the bottoms of the body 5.
  • the cable protection sealing device comprises a compression hollow bolt 17 , a sealing rubber pad 18 and a cable protection screw 19 , and the cable protection screw 19 is provided with a cable for feeding 22 or cable 16 through the central hole 1904, one side of the cable protection screw 19 is provided with an O-ring placement slot 1901, and on the side is provided with an external thread 1902, the O-ring placement slot 1901 is placed with an O-ring 20; One side of the cable protection screw 19 is inserted into the cable hole 202 or the cable opening 1205 and is screwed to the cable entry hole 202 or the cable opening 1205 through the O-ring 20 and the shoe 2 or the upper cover 12 Achieve sealing.
  • the other side of the cable protection screw 19 is located at one end of the shoe 2 or outside the other end of the upper cover 12.
  • the sealing rubber pad 18 is received on one side of the central hole 1904, and is sleeved on the cable feed 22 or the cable 16 for sealing.
  • the compression hollow bolt 17 is received on the other side of the central hole 1904, and is disposed at the center hole 1904.
  • An internal thread 1903 provided on one side is threaded to press and seal the sealing pad 18, and the incoming cable 22 or the outgoing cable 16 is passed through the compressed hollow bolt 17.
  • the filling liquid of the present invention may be a sealing lubricating oil 23, and both the slip ring 15 and the thrust ball bearing 8 are immersed in the sealing lubricating oil 23.
  • the model of the skeleton oil seal 4 used in the present invention is AP1260E, and the type of the slip ring 15 used is a 6-way 5A current slip ring of the company.
  • the assembly process of the present invention is:
  • the skeleton oil seal 4 is installed into the skeleton oil seal seat 501; the outer side of the bottom shaft 204 is sleeved through the lubricating wear piece 3, passes through the skeleton oil seal 4, and then the sleeve 7 and the limit collar are sequentially inserted inside the cylinder 5 6.
  • the spacer 7, the thrust ball bearing 8 and the spring washer 9 are screwed to the opening nut 13 by means of the positioning thread 207 on the shoe 2, so that the axial limit of the bottom shaft 204 is achieved;
  • the slip ring 15 is installed in the slip ring seat 206, and the slip ring 15 is fixed by the fixing bolts 14, and the cable 22 connected to the lower end of the slip ring 15 is sequentially passed through the bottom threading hole 205 and the cable entry hole 202; the cable protection An O-ring 20 is placed on the screw 19, passes through the cable 22, and the external thread 1902 on the cable protection screw 19 is screwed into the cable entry hole 202 of the shoe 2, and the O-ring 20 is used as a filler to protect the cable.
  • the screw 19 is sealingly sealed with the outer wall of the bottom bracket 2; the sealing rubber pad 18 and the pressing hollow bolt 17 are sequentially passed through the cable 22, and the compression hollow bolt 17 is screwed into the internal thread 1903 of the cable protection screw 19 to seal
  • the rubber pad 18 is pressed to achieve the sealing of the cable 22; the cable 16 connected to the upper end of the slip ring 15 is sequentially passed through the upper cover threading hole 1204 and the cable opening 12
  • the sealing ring 10 is placed in the sealing ring groove 1201 of the upper cover 12, the other end of the cylindrical body 5 is inserted, and the connecting bolt 11 is inserted into the bolt hole 1202 of the upper cover 12, and is screwed into the cylindrical body.
  • the O-ring 20 is placed on the cable protection screw 19, passes through the cable 16, and the external thread on the cable 19 is protected by the cable.
  • 1902 is screwed into the cable opening 1205 of the upper cover 12, and the O-ring 20 is used as a filler to seal the cable protection screw 19 and the outer wall of the upper cover 12;
  • the sealing rubber pad 18 and the compression hollow bolt 17 are sequentially Through the cable exit 16, the compression hollow bolt 17 is screwed into the internal thread 1903 of the cable protection screw 19, and the sealing rubber pad 18 is pressed to achieve the sealing of the cable 16; the oil hole 1203 is sealed to the outside.
  • the casing is filled with a sealing lubricant 23 and sealed with a sealing bolt 21 to complete the system assembly.
  • the lower eye 201 on the shoe 2 and the upper eye 1206 on the upper cover 12 are respectively connected to the anchoring member, and the slip ring 15 is rotated with the center axis 204 of the shoe to realize communication and power transmission in the case of rotation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cable Accessories (AREA)
  • Sealing Of Bearings (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

一种水下承拉电转环，包括外部密封壳体、内部转动承重传输装置及线缆保护密封装置。外部密封壳体包括底托（2）、润滑耐磨片（3）、骨架油封（4）、筒体（5）、上封盖（12）、密封圈（10）和连接螺栓（11）；内部转动承重传输装置包括底托中轴（204）、垫片（7）、限位套环（6）、推力球轴承（8）、开口螺母（13）和滑环（15）；线缆保护密封装置包括缆线保护螺丝（19）、压紧中空螺栓（17）和密封胶垫（18）；内部转动承重传输装置位于填充了液体的外部密封壳体内。水下承拉电转环保证上下信号传输的同时，可卸去扭转载荷，壳体内充满液体，既可实现润滑，又避免了壳体因外压变形。

Description

一种水下承拉电转环 技术领域
本发明涉及水下锚系设备，具体地说是一种水下承拉电转环。
背景技术
海洋中含有丰富的资源，海洋生物资源、海水化学资源、海洋矿产资源、海洋能源以及海上航运交通皆对人类的生存发展和世界文明的振兴进步有着重大的影响。除了蕴藏丰富的海洋资源以外，辽阔的海域还是交通的通道、防御外敌入侵的天然屏障，开发利用海洋、发展海洋事业与人类的文明发展息息相关。定点海洋观测系统是海洋开发和海洋观测研究的重要装备，它一般由底锚、锚索和连接件组成的锚系可将表面或水下浮动平台长期锚定于工作站位。海洋浮动平台及锚系上的设备之间要进行供电和通讯，另外，海洋浮动平台及锚系在风、浪、流等作用下会在锚索上产生扭转。在锚系上安装水下电转环进行连接，既可在浮动平台和锚系之间进行通讯，又可卸去扭转载荷，在通讯与供电的同时，防止系统因扭转而遭破坏。
船舶、大型海洋浮动平台及航标等的锚系中多采用锚链转环，该锚链转环的两个链环通过转轴连接，轴端设置台肩止退。锚链转环的转动摩擦系数大，在较大转矩下才能转动；即便是安装稍微复杂的带轴承的承重转环，也没法进行供电和信号的传输。而在海洋观测浮标和潜标等观测系统中，锚系上往往挂装观测设备，需要浮力平台给观测设备供电，同时希望将观测设备的数据传输到浮动平台上；这样，就需要在上下通讯与供电的情况下，并能在较小的转矩下松快转动，以保护线缆、光缆等锚索不因扭转损坏。
发明内容
为了解决定点海洋观测系统中锚系上安装的锚链转环、承重转环存在的上述问题，本发明的目的在于提供一种水下承拉电转环。该水下承拉电转环由轴承支撑，内部充油，转动摩擦系数小，可在较小扭矩下松快转动，保护海洋浮动观测平台的锚系不因扭转损坏；该水下承拉电转环中的滑环位于密封壳体内部，可以在扭转的情况下进行信号与电能传输。
本发明的目的是通过以下技术方案来实现的：
本发明包括外部密封壳体、内部转动承重传输装置及线缆保护密封装置，其中外部密封壳体包括底托、筒体及上封盖，该底托的一端位于筒体外部，另一端为带有底托穿线孔的底托中轴，并与所述筒体的一端密封转动连接，该筒体的另一端与所述上封盖的一端密封连接；所述内部转动承重传输装置包括限位套环、轴承、开口螺母及滑环，所述底托中轴通过轴承与筒体的内壁转动连接，该轴承 的上下两端分别设有与底托中轴螺纹连接的开口螺母及套设在底托中轴上、支撑轴承的限位套环，所述滑环连接于底托中轴上；所述上封盖上设有向筒体与上封盖内部空间注入填充液体的进油孔，该滑环浸泡于填充液体中；进缆穿入底托，经所述底托穿线孔与滑环的一端相连，出缆的一端与所述滑环的另一端相连，该出缆的另一端由所述上封盖穿出，在上封盖及底托上分别设有对出缆及进缆实现密封保护的缆保护密封装置；所述底托的一端及上封盖的另一端分别与锚系件连接，所述滑环随底托中轴转动，实现在转动的情况下进行通信和电能传输；
其中：所述底托的一端开有用于与锚系件连接的下环眼，另一端的所述底托中轴内部沿轴向开有所述底托穿线孔，所述底托的一端上开设有与该底托穿线孔下端相连通的进缆孔，所述进缆由该进缆孔穿入，所述进缆孔处连接有所述线缆保护密封装置，所述底托穿线孔的上端为容置滑环的滑环座；
所述底托中轴上套设有润滑耐磨片，该润滑耐磨片位于底托一端与所述筒体一端之间，所述底托中轴的下端设有位于润滑耐磨片下方、托住润滑耐磨片的托盘，所述底托中轴的上端外表面设有与所述开口螺母螺纹连接的定位螺纹；
所述下环眼套设有避免金属材质引起电化学腐蚀的尼龙套，该尼龙套包括套筒及筒盖，该套筒为中空结构，轴向截面为“T”形，与筒盖连接的一端设有螺纹；所述套筒由下环眼的一侧插入，与位于所述下环眼另一侧的筒盖螺纹连接，所述锚系件连接于下环眼上的尼龙套；
所述筒体为两端开口的中空结构，一端的筒壁上设有骨架油封座，该骨架油封座内容置有套设在所述底托中轴上、与底托中轴形成密封的骨架油封；所述筒体另一端的筒壁开设有用于与上封盖连接的连接螺孔；
所述上封盖的一端为内部中空结构，分别开有向内部空间注入填充液体的进油孔及用于与所述筒体连接的螺栓孔，该上封盖的一端分别开设有上封盖穿线孔及出缆孔，所述上封盖穿线孔的下端与所述内部空间相连通，上端与出缆孔相连通，所述出缆依次由上封盖穿线孔及出缆孔穿出，所述出缆孔处连接有所述线缆保护密封装置；所述上封盖的另一端开有用于与锚系件连接的上环眼；
所述上环眼套设有避免金属材质引起电化学腐蚀的尼龙套，该尼龙套包括套筒及筒盖，该套筒为中空结构，轴向截面为“T”形，与筒盖连接的一端设有螺纹；所述套筒由上环眼的一侧插入，与位于所述上环眼另一侧的筒盖螺纹连接，所述锚系件连接于上环眼上的尼龙套；
所述限位套环包括位于内部的铜环及位于外部的钢环，所述底托中轴由铜环的内孔穿过，在所述限位套环的上下两端分别设有套设在底托中轴上的垫片，上端的垫片位于所述轴承与限位套环之间，下端的垫片位于轴承与所述筒体内的底部之间；
所述线缆保护密封装置包括压紧中空螺栓、密封胶垫及缆线保护螺丝，该缆线保护螺丝开有供进缆或出缆穿过的中心孔，所述缆线保护螺丝的一侧与底托的 一端或上封盖的另一端螺纹密封连接，另一侧位于底托的一端或上封盖的另一端外部；所述密封胶垫容置于中心孔的一侧，并套设在进缆或出缆上实现密封，所述压紧中空螺栓容置于中心孔的另一侧，并于中心孔一侧设置的内螺纹螺纹连接、压紧密封胶垫，所述进缆或出缆由该压紧中空螺栓穿过；
所述轴承与开口螺母之间设有套设在底托中轴上的弹垫。
本发明的优点与积极效果为：
1.转动中进行信号传输：本发明的外部密封壳体内固定滑环，滑环浸泡于密封润滑油中，可以在转动的情况下，进行通信和电能传输。
2.适用水深范围大：本发明的外部密封壳体内部充满密封润滑油，并通过骨架油封、密封圈、注油孔密封圈密封，油不外泄，水不内渗，既保证轴承充分润滑，又使得本发明用于水下时内外压力差几乎为零，避免了外压使密封壳体变形。
3.易于转动：本发明的推力轴承承受轴向载荷，浸泡在润滑油内，转动摩擦系数很小，同时底托和筒体间加装具有自润滑特性的聚四氟乙烯材质制成的润滑耐磨片，进一步减少摩擦系数，保证了本发明在很小扭矩下松快转动。
4.优良的耐腐蚀性能：本发明外露与水接触的结构件采用耐海水腐蚀的不锈钢材质，底托上的下环眼和上封盖上的上环眼加装尼龙材质的隔离套筒，以使本发明与所连接的锚系件隔离，避免可能的不同金属材质引起的电化学腐蚀。
5.易于卸载扭转载荷：本发明的底托和上封盖的环眼分别连接两段锚系结构件，当上、下两段锚系结构件有扭转载荷时，底托和上封盖可相对转动，卸去扭转载荷。
6.本发明有不同尺寸系列规格，可满足卸载不同锚系载荷与传输不同电流的需求。
附图说明
图1为本发明的外部结构示意图；
图2为本发明的内部结构示意图；
图3为本发明底托的结构剖视图；
图4为本发明筒体的结构剖视图；
图5为本发明上封盖的结构剖视图；
图6为本发明限位套环的结构剖视图；
图7为本发明缆线保护螺丝的结构剖视图；
图8A为本发明尼龙套的结构主视图；
图8B为本发明尼龙套的侧视剖视图；
其中：1为尼龙套，2为底托，3为润滑耐磨片，4为骨架油封，5为筒体，6为限位套环，7为垫片，8为推力球轴承，9为弹垫，10为密封圈，11为连接 螺栓，12为上封盖，13为开口螺母，14为固定螺栓，15为滑环，16为出缆，17为压紧中空螺栓，18为密封胶垫，19为缆线保护螺丝，20为O型圈，21为密封螺栓，22为进缆，23为密封润滑油；
101为套筒，102为筒盖；
201为下环眼，202为进缆孔，203为托盘，204为底托中轴，205为底托穿线孔，206为滑环座，207为定位螺纹；
501为骨架油封座，502为筒壁，503为连接螺孔；
601为铜环，602为钢环，603为内孔；
1201为密封圈槽，1202为螺栓孔，1203为进油孔，1204为上封盖穿线孔，1205为出缆孔，1206为上环眼；
1901为O型圈放置槽，1902为外螺纹，1903为内螺纹，1904为中心孔；
具体实施方式
下面结合附图对本发明作进一步详述。
如图1、图2所示，本发明包括外部密封壳体、内部转动承重传输装置及线缆保护密封装置，其中外部密封壳体包括底托2、润滑耐磨片3、骨架油封4、筒体5、密封圈10、连接螺栓11及上封盖12，内部转动承重传输装置包括底托中轴204、垫片7、限位套环6、推力球轴承8、开口螺母13和滑环15，线缆保护密封装置包括缆线保护螺丝19、压紧中空螺栓17和密封胶垫18。
如图1～3及图8A、图8B所示，底托2的一端位于筒体5外部，另一端为带有底托穿线孔205的底托中轴204，底托中轴204由筒体5的一端插入，并通过轴承、骨架油封4与筒体5密封转动连接。底托中轴204通过轴承(本实施例的轴承为推力球轴承8)与筒体5的内壁转动连接，该轴承的上下两端分别设有与底托中轴204螺纹连接的开口螺母13及套设在底托中轴204上、支撑轴承的限位套环6。在轴承与开口螺母13之间设有套设在底托中轴204上的弹垫9。底托2的一端开有用于与锚系件连接的下环眼201，另一端的底托中轴204内部沿轴向开有底托穿线孔205，底托2的一端上开设有与该底托穿线孔205下端相连通的进缆孔202，进缆孔202具有内螺纹，并和底托穿线孔205垂直贯通，进缆22由该进缆孔202穿入；进缆孔202处连接有线缆保护密封装置，底托穿线孔205的上端为滑环座206，滑环15容置于滑环座206中，并通过固定螺栓14与底托中轴204固接。底托穿线孔205及滑环座206均位于底托中轴204的中心。底托中轴204上套设有润滑耐磨片3，该润滑耐磨片3位于底托2一端与筒体5一端之间，底托中轴204的下端设有位于润滑耐磨片3下方、托住润滑耐磨片3的托盘，底托中轴204的上端外表面设有与开口螺母13螺纹连接的定位螺纹207。本实施例的润滑耐磨片3为具有自润滑特性的聚四氟乙烯材质制成的润滑垫圈，进一步减少了底托2与筒体5之间的摩擦系数，保证了本发明在很小扭矩下松快 转动。下环眼201套设有尼龙套1，用于隔离锚系件与金属材质的底托2，避免可能的不同金属材质引起的电化学腐蚀。尼龙套1包括套筒101及筒盖102，该套筒101为中空结构，轴向截面为“T”形，与筒盖102连接的一端设有螺纹；套筒101由下环眼201的一侧插入，与位于下环眼201另一侧的筒盖102螺纹连接，锚系件连接于下环眼201上的尼龙套1。
如图1～6所示，筒体5的另一端与上封盖12的一端密封连接，筒体5为两端开口的中空结构，一端的筒壁502上设有骨架油封座501，该骨架油封座501内容置有套设在底托中轴204上、与底托中轴204形成密封的骨架油封4；筒体5另一端的筒壁502开设有用于与上封盖12连接的连接螺孔503。
上封盖12的一端为内部中空结构，分别开有向内部空间注入填充液体的进油孔1203及用于与筒体5连接的螺栓孔1202，进油孔1203在注入填充液体后插入密封螺栓21，滑环15及轴承均浸泡于填充液体中。上封盖12上的螺栓孔1202与筒体5上的连接螺孔503数量相同、且一一对应，通过连接螺栓11将筒体5与上封盖12连接在一起。上封盖12的一端外表面设有密封圈槽1201，该密封圈槽1201内容置有密封槽10，上封盖12与筒体5之间通过该密封槽10实现密封；在上封盖12的一端沿轴向还分别开设有上封盖穿线孔1204及出缆孔1205，上封盖穿线孔1204位于上封盖的中轴中心，出缆孔1205具有内螺纹，并与上封盖穿线孔1204垂直贯通；上封盖穿线孔1204的下端与内部空间相连通，上端与出缆孔1205相连通，出缆16依次由上封盖穿线孔1204及出缆孔1205穿出，出缆孔1205处连接有线缆保护密封装置。上封盖12的另一端开有用于与锚系件连接的上环眼1206。上环眼1206套设有尼龙套1，用于隔离锚系件与金属材质的上封盖12，避免可能的不同金属材质引起的电化学腐蚀。尼龙套1包括套筒101及筒盖102，该套筒101为中空结构，轴向截面为“T”形，与筒盖102连接的一端设有螺纹；套筒101由上环眼1206的一侧插入，与位于上环眼1206另一侧的筒盖102螺纹连接，锚系件连接于上环眼1206上的尼龙套1。
如图1、图2及图6所示，限位套环6包括位于内部的铜环601及位于外部的钢环602，底托中轴204由铜环601的内孔603穿过，在限位套环6的上下两端分别设有套设在底托中轴204上的垫片7，上端的垫片7位于轴承与限位套环6之间，下端的垫片7位于轴承与筒体5内的底部之间。
如图1、图2及图7所示，线缆保护密封装置包括压紧中空螺栓17、密封胶垫18及缆线保护螺丝19，该缆线保护螺丝19开有供进缆22或出缆16穿过的中心孔1904，缆线保护螺丝19的一侧上开设有O型圈放置槽1901，并在该侧设有外螺纹1902，O型圈放置槽1901内容置有O型圈20；缆线保护螺丝19的一侧插入进缆孔202或出缆孔1205中，并与进缆孔202或出缆孔1205螺纹连接，通过O型圈20与底托2或上封盖12之间实现密封。缆线保护螺丝19的另一侧位于底托2的一端或上封盖12的另一端外部。密封胶垫18容置于中心孔1904 的一侧，并套设在进缆22或出缆16上实现密封，压紧中空螺栓17容置于中心孔1904的另一侧，并于中心孔1904一侧设置的内螺纹1903螺纹连接、压紧密封胶垫18，进缆22或出缆16由该压紧中空螺栓17穿过。
本发明的填充液体可为密封润滑油23，滑环15和推力球轴承8均浸泡在密封润滑油23内。
本发明所用骨架油封4的型号为AP1260E，所用滑环15的型号为森瑞普公司的6路5A电流滑环。
本发明的装配过程为：
将骨架油封4安装进骨架油封座501；底托中轴204外侧套穿润滑耐磨片3后，穿过骨架油封4，而后在筒体5的内部依次套穿垫片7、限位套环6、垫片7、推力球轴承8和弹垫9，并借助底托2上的定位螺纹207拧接开口螺母13，实现底托中轴204的轴向限位；底托中轴204上端内侧的滑环座206内安装滑环15，并用固定螺栓14将滑环15固定，再将滑环15下端连接的进缆22依次通过底托穿线孔205和进缆孔202穿出；缆线保护螺丝19上放置O型圈20，穿过进缆22，借助缆线保护螺丝19上的外螺纹1902旋进底托2的进缆孔202，并以O型圈20为填料，将缆线保护螺丝19与底托2外壁贴合密封；将密封胶垫18和压紧中空螺栓17依次穿过进缆22，将压紧中空螺栓17旋进缆线保护螺丝19上的内螺纹1903，将密封胶垫18压紧，从而实现进缆22的密封；将滑环15上端连接的出缆16依次穿过上封盖穿线孔1204和出缆孔1205后穿出；上封盖12的密封圈槽1201内放置密封圈10后，嵌进筒体5的另一端，连接螺栓11套进上封盖12上的螺栓孔1202内，旋进筒体5的连接螺孔503内，从而将筒体5和上封盖12紧固连接；缆线保护螺丝19上放置O型圈20，穿过出缆16，借助缆线保护螺丝19上的外螺纹1902旋进上封盖12的出缆孔1205，并以O型圈20为填料，将缆线保护螺丝19与上封盖12外壁贴合密封；将密封胶垫18和压紧中空螺栓17依次穿过出缆16，将压紧中空螺栓17旋进缆线保护螺丝19上的内螺纹1903，将密封胶垫18压紧，从而实现出缆16的密封；借助进油孔1203，向外部密封壳体内注满密封润滑油23，并用密封螺栓21进行密封，完成系统装配。
底托2上的下环眼201及上封盖12上的上环眼1206分别与锚系件连接，滑环15随底托中轴204转动，实现在转动的情况下进行通信和电能传输。

Claims (10)

  1. 一种水下承拉电转环，其特征在于：包括外部密封壳体、内部转动承重传输装置及线缆保护密封装置，其中外部密封壳体包括底托(2)、筒体(5)及上封盖(12)，该底托(2)的一端位于筒体(5)外部，另一端为带有底托穿线孔(205)的底托中轴(204)，并与所述筒体(5)的一端密封转动连接，该筒体(5)的另一端与所述上封盖(12)的一端密封连接；所述内部转动承重传输装置包括限位套环(6)、轴承、开口螺母(13)及滑环(15)，所述底托中轴(204)通过轴承与筒体(5)的内壁转动连接，该轴承的上下两端分别设有与底托中轴(204)螺纹连接的开口螺母(13)及套设在底托中轴(204)上、支撑轴承的限位套环(6)，所述滑环(15)连接于底托中轴(204)上；所述上封盖(12)上设有向筒体(5)与上封盖(12)内部空间注入填充液体的进油孔(1203)，该滑环(15)浸泡于填充液体中；进缆(22)穿入底托(2)，经所述底托穿线孔(205)与滑环(15)的一端相连，出缆(16)的一端与所述滑环(15)的另一端相连，该出缆(16)的另一端由所述上封盖(12)穿出，在上封盖(12)及底托(2)上分别设有对出缆(16)及进缆(22)实现密封保护的缆保护密封装置；所述底托(2)的一端及上封盖(12)的另一端分别与锚系件连接，所述滑环(15)随底托中轴(204)转动，实现在转动的情况下进行通信和电能传输。
  2. 根据权利要求1所述的水下承拉电转环，其特征在于：所述底托(2)的一端开有用于与锚系件连接的下环眼(201)，另一端的所述底托中轴(204)内部沿轴向开有所述底托穿线孔(205)，所述底托(2)的一端上开设有与该底托穿线孔(205)下端相连通的进缆孔(202)，所述进缆(22)由该进缆孔(202)穿入，所述进缆孔(202)处连接有所述线缆保护密封装置，所述底托穿线孔(205)的上端为容置滑环(15)的滑环座(206)。
  3. 根据权利要求2所述的水下承拉电转环，其特征在于：所述底托中轴(204)上套设有润滑耐磨片(3)，该润滑耐磨片(3)位于底托(2)一端与所述筒体(5)一端之间，所述底托中轴(204)的下端设有位于润滑耐磨片(3)下方、托住润滑耐磨片(3)的托盘，所述底托中轴(204)的上端外表面设有与所述开口螺母(13)螺纹连接的定位螺纹(207)。
  4. 根据权利要求2所述的水下承拉电转环，其特征在于：所述下环眼(201)套设有避免金属材质引起电化学腐蚀的尼龙套(1)，该尼龙套(1)包括套筒(101)及筒盖(102)，该套筒(101)为中空结构，轴向截面为“T”形，与筒盖(102)连接的一端设有螺纹；所述套筒(101)由下环眼(201)的一侧插入，与位于所述下环眼(201)另一侧的筒盖(102)螺纹连接，所述锚系件连接于下环眼(201)上的尼龙套(1)。
  5. 根据权利要求1所述的水下承拉电转环，其特征在于：所述筒体(5)为 两端开口的中空结构，一端的筒壁(502)上设有骨架油封座(501)，该骨架油封座(501)内容置有套设在所述底托中轴(204)上、与底托中轴(204)形成密封的骨架油封(4)；所述筒体(5)另一端的筒壁(502)开设有用于与上封盖(12)连接的连接螺孔(503)。
  6. 根据权利要求1所述的水下承拉电转环，其特征在于：所述上封盖(12)的一端为内部中空结构，分别开有向内部空间注入填充液体的进油孔(1203)及用于与所述筒体(5)连接的螺栓孔(1202)，该上封盖(12)的一端分别开设有上封盖穿线孔(1204)及出缆孔(1205)，所述上封盖穿线孔(1204)的下端与所述内部空间相连通，上端与出缆孔(1205)相连通，所述出缆(16)依次由上封盖穿线孔(1204)及出缆孔(1205)穿出，所述出缆孔(1205)处连接有所述线缆保护密封装置；所述上封盖(12)的另一端开有用于与锚系件连接的上环眼(1206)。
  7. 根据权利要求6所述的水下承拉电转环，其特征在于：所述上环眼(1206)套设有避免金属材质引起电化学腐蚀的尼龙套(1)，该尼龙套(1)包括套筒(101)及筒盖(102)，该套筒(101)为中空结构，轴向截面为“T”形，与筒盖(102)连接的一端设有螺纹；所述套筒(101)由上环眼(1206)的一侧插入，与位于所述上环眼(1206)另一侧的筒盖(102)螺纹连接，所述锚系件连接于上环眼(1206)上的尼龙套(1)。
  8. 根据权利要求1所述的水下承拉电转环，其特征在于：所述限位套环(6)包括位于内部的铜环(601)及位于外部的钢环(602)，所述底托中轴(204)由铜环(601)的内孔(603)穿过，在所述限位套环(6)的上下两端分别设有套设在底托中轴(204)上的垫片(7)，上端的垫片(7)位于所述轴承与限位套环(6)之间，下端的垫片(7)位于轴承与所述筒体(5)内的底部之间。
  9. 根据权利要求1所述的水下承拉电转环，其特征在于：所述线缆保护密封装置包括压紧中空螺栓(17)、密封胶垫(18)及缆线保护螺丝(19)，该缆线保护螺丝(19)开有供进缆(22)或出缆(16)穿过的中心孔(1904)，所述缆线保护螺丝(19)的一侧与底托(2)的一端或上封盖(12)的另一端螺纹密封连接，另一侧位于底托(2)的一端或上封盖(12)的另一端外部；所述密封胶垫(18)容置于中心孔(1904)的一侧，并套设在进缆(22)或出缆(16)上实现密封，所述压紧中空螺栓(17)容置于中心孔(1904)的另一侧，并于中心孔(1904)一侧设置的内螺纹(1903)螺纹连接、压紧密封胶垫(18)，所述进缆(22)或出缆(16)由该压紧中空螺栓(17)穿过。
  10. 根据权利要求1所述的水下承拉电转环，其特征在于：所述轴承与开口螺母(13)之间设有套设在底托中轴(204)上的弹垫(9)。
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