CN110768185A - Sealing structure for leading out cable on stern tube and mounting method thereof - Google Patents
Sealing structure for leading out cable on stern tube and mounting method thereof Download PDFInfo
- Publication number
- CN110768185A CN110768185A CN201910878881.XA CN201910878881A CN110768185A CN 110768185 A CN110768185 A CN 110768185A CN 201910878881 A CN201910878881 A CN 201910878881A CN 110768185 A CN110768185 A CN 110768185A
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- CN
- China
- Prior art keywords
- cable
- flange
- sealing
- stern tube
- tube
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- Legal status (The legal status 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 status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
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- 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
-
- 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
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
Abstract
The invention discloses a sealing structure for leading out a cable on a stern tube and an installation method thereof, wherein the sealing structure comprises: the tube wall of the stern tube is provided with a through hole for leading out a cable inside the stern tube, the outer wall of the tube wall of the stern tube is provided with a counter bore with the diameter larger than that of the through hole, and the counter bore is coaxial with the through hole; the first end of the long flange short pipe is connected in the counter bore in a welding mode, a sealing plate is clamped between the first end of the long flange short pipe and the bottom of the counter bore, and a first hole is formed in the sealing plate; a short flange pipe spool; and a sealing box. The invention has the advantages of solving the problem that the sensor cable is easy to cause the leakage of the lubricating oil of the stern shaft when the sensor cable is installed in the stern tube, improving the working stability of the stern shaft sealing system and being widely suitable for the sealing installation of the sensor cables of various ship types on the stern tube.
Description
Technical Field
The invention belongs to the field of design and manufacture of ship stern shaft systems, and particularly relates to a sealing structure for leading out a cable on a stern tube and an installation method thereof.
Background
In the running process of the ship shafting, an oil film is generated between the shaft and the bearings, when the ship sails normally, the shafting runs stably, the shaft neck and the bearings are in a good lubricating state, and the lubricating oil film is uniformly distributed. However, due to the interaction of various factors such as power change of a ship main engine, ship body vibration, large turning operation and the like, the ship shafting is unstable in operation, and the position of the axis of the ship continuously changes. Especially for the stern tube bearing, because of its special position, it needs to bear larger propeller cantilever action, inertia action and hydrodynamic action, often in a very bad lubrication state, even will cause the wear of the stern tube bearing under the bad working condition.
In order to realize real-time monitoring of the position of the stern shaft in the stern tube bearing so as to analyze the working state of the stern shaft, a plurality of sections are required to be selected for installing displacement sensors on the front bearing and the rear bearing of the stern shaft, the installation of the sensors is inevitably required to arrange sensor installation holes and cable wiring grooves on the stern tube bearing, cable leading-out holes are required to be arranged on the stern tube, and signals of the sensors are output to a detection end.
Generally speaking, in order to facilitate bearing processing and cable routing, after a sensor mounting hole is located on a stern tube bearing, a U-shaped cable groove penetrating through the head end and the tail end of the stern tube bearing is formed along the axial direction of the hole for cable arrangement, and finally the cable is led out through a counter bore on the stern tube. Because the pressure of the lubricating oil in the stern tube is high, if the cable hole on the stern tube cannot be sealed, the lubricating oil is easy to leak, and an oil film formed between the stern shaft and a bearing of the stern tube is damaged, so that the running of a stern shaft system is damaged.
Therefore, the sensor cable hole on the stern tube is difficult to seal for the stern shaft needing to be provided with the position sensor, and the problem to be solved is urgent.
Disclosure of Invention
The invention provides a sealing structure for leading out a cable on a stern tube and an installation method thereof, aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sealing structure for cable run-out on a stern tube, the sealing structure comprising: the tube wall of the stern tube is provided with a through hole for leading out a cable inside the stern tube, the outer wall of the tube wall of the stern tube is provided with a counter bore with the diameter larger than that of the through hole, and the counter bore is coaxial with the through hole; the first end of the long flange short pipe is connected in the counter bore in a welding mode, a sealing plate is clamped between the first end of the long flange short pipe and the bottom of the counter bore, and a first hole is formed in the sealing plate; the first end of the short flange short pipe is connected with the second end of the long flange short pipe through a flange; and
the bottom of the sealing box is provided with a second hole and is welded and connected to the second end of the short flange short pipe, the top of the sealing box is connected with a cover plate, and the cover plate is connected with a stuffing box; the cable sequentially penetrates through the through hole, the first hole, the long flange short pipe, the short flange short pipe, the second hole and the packing box from the inside of the stern tube to the outside of the stern tube, and epoxy resin is poured in the long flange short pipe.
Preferably, the sealing structure includes: the limiting plate is provided with a third hole for the cable to pass through, and the cable passing through the long flange short pipe is connected with a plurality of limiting plates, so that the cable is separated from the inner side wall of the long flange short pipe.
Preferably, the first hole and the cable are in interference fit to prevent relative sliding.
Preferably, the flange of the second end of the stub long flange is horizontal.
Preferably, the number of the limiting plates is 3, and the third hole is in interference fit with the cable.
Preferably, the sealing plate, the limiting plate and the long flange short pipe are all made of stainless steel.
Preferably, the flanges of the long flange short pipe and the short flange short pipe are standard flanges.
Preferably, the stuffing box is a standard stuffing box matched with the sensor cable.
Preferably, the bending angle of the short pipe of the long flange short pipe is 135 degrees, but the angle can be adjusted according to the actual installation situation, and the flange end face of the long flange short pipe needs to be ensured to be horizontal.
Preferably, the opening on the sealing plate is in interference fit with the outer diameter of the cable, and the outer diameter of the sealing plate is equal to the outer diameter of the short pipe of the long flange short pipe, so that epoxy resin is prevented from entering the stern pipe during pouring.
Preferably, the cable trompil size and the relative position on seal box, limiting plate, the shrouding all the same, do not take place the distortion when guaranteeing the cable to arrange.
A method of installing a sealing structure for cable run-out on a stern tube, the method comprising: the stern tube bearing and the stern tube are sequentially arranged on the outer side of the stern shaft, a sealing cavity is arranged between the stern tube and the stern shaft, and the cable guide tube penetrates through a cable guide groove of the stern tube bearing and is arranged in the sealing cavity; after the cable penetrates out of the cable guide groove, the cable sequentially penetrates through a counter bore and a sealing plate on the stern tube, then a limiting plate is arranged on the cable, and the arrangement of the limiting plate is adjusted, so that the limiting plates can be uniformly arranged in the long flange short tube; penetrating a cable with a limiting plate into the short long flange pipe from one end far away from the flange and penetrating out from the other end, extending one end of the short long flange pipe far away from the flange into a sealing plate in the counter bore, and then welding the short long flange pipe on the stern tube; adjusting the arrangement of the cables in the long flange short pipe to ensure that the cables are not wound and are not contacted with the inner side wall of the long flange short pipe, and then pouring epoxy resin; welding one end of the short flange short pipe, which is far away from the flange, with the bottom of the sealing box in the middle, after the epoxy resin is solidified, penetrating a cable through the short flange short pipe, a second hole in the bottom of the sealing box and a filler box on the cover plate, connecting the flange end of the short flange short pipe with the flange end of the long flange short pipe, and installing the cover plate on the top of the sealing box; and lubricating oil is injected into a sealing cavity formed between the stern tube and the stern shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. the problem of oil leakage when the sensor cable is installed on the stern tube is effectively solved, and by installing the limiting plate on the cable, the cable can be prevented from contacting with the inner wall of the long flange short tube, the multiple cables can be prevented from contacting and winding with each other, and the sealing effect of epoxy resin pouring is ensured;
2. the stuffing box can be used as a second seal, so that the working stability of the device is further improved; due to the adoption of the sealing plate, the epoxy resin can be effectively prevented from entering the stern tube during pouring;
3. the device can be widely applied to the sealing of the sensor cables of various ship types on the stern tube after local fine adjustment is carried out according to the actual installation position and the cable size.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Figure 2 is a top plan view of components of a closure plate in accordance with an embodiment of the present invention.
Fig. 3 is a top view of the components of the limiting plate according to the embodiment of the invention.
Fig. 4 is a top view of a component of a stuffing box in an embodiment of the present invention.
Fig. 5 is a top view of the components of the seal cartridge in an embodiment of the present invention.
Fig. 6 is an installation schematic of an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, the present embodiment provides a sealing device for mounting a stern tube sensor cable, which includes a stern tube 1, a counter bore 2, a sealing plate 3, a cable 4, a limiting plate 5, a long flange short tube 6, a short flange short tube 7, a sealing box 8, a cover plate 9, a stuffing box 10, and an epoxy resin 11. The counter bore 2 is arranged on the stern tube 1, and the closing plate 3 is placed in the counter bore 2. The cable 4 penetrates through the sealing device, and the limiting plate 5 is installed on the cable 4. One end of the long flange short pipe 6, which is far away from the flange, is placed on the sealing plate 3 in the counter bore 2 and is welded on the stern tube 1, and the short flange short pipe 7 is connected with the long flange short pipe 6 through the flange. The bottom of the sealing box 8 is welded at one end, far away from the flange, of the short flange short pipe 7, the cover plate 9 is installed above the sealing box 8, and the stuffing box 10 is installed on the cover plate 9.
As shown in fig. 2-5, the three stuffing boxes 10 are uniformly distributed above the cover plate 9, and the cable openings on the closing plate 3, the limiting plate 5 and the sealing box 8 have the same size and the same position. The cover plate 9 has the same size and the same position as the mounting hole of the seal box 8.
As shown in fig. 6, the using method of the present embodiment is as follows: the stern tube bearing 12 and the stern tube 1 are sequentially arranged on the outer side of the stern shaft 13, a sealing cavity is arranged between the stern tube 1 and the stern shaft 13, and the cable guide pipe 14 penetrates through a cable guide groove of the stern tube bearing 12 and is arranged in the sealing cavity. The cable 4 penetrates out of the cable guide groove 14, and then sequentially penetrates through the counter bore 2 and the closing plate 3 on the stern tube 1, and then the limiting plate 5 is installed on the cable 4, and the arrangement of the limiting plate 5 is adjusted to be uniformly distributed in the long flange short tube 6. And the cable 4 with the limiting plate 5 penetrates into the end, far away from the flange, of the long flange short pipe 6 and penetrates out of the other end of the long flange short pipe 6, then the end, far away from the flange, of the long flange short pipe 6 extends into the sealing plate 3 in the counter bore 2, and then the long flange short pipe is welded on the stern tube 1. The arrangement of the cables 4 in the long flange short pipe 6 is adjusted to ensure that the cables 4 are not wound and are not contacted with the inner wall of the long flange short pipe 6, and then the epoxy resin 11 is poured. The short flange short pipe 7 is welded with the bottom of the sealing box 8 in the middle of the end far away from the flange, after the epoxy resin 11 is solidified, the flange end of the short flange short pipe 7 is connected with the flange end of the long flange short pipe 6, then the cable 4 penetrates through the short flange short pipe 7, a cable hole in the bottom of the sealing box 8 and a stuffing box 10 on the cover plate 9, and finally the cover plate 9 is installed at the upper end of the sealing box. After the device is installed, lubricating oil 15 can be injected into a sealing cavity formed between the stern tube 1 and the stern shaft 13, and due to the existence of the sealing device, the lubricating oil 15 cannot leak out from the cable installation hole, so that the stable running of the shafting is ensured.
The embodiment is a new mode for the sealing installation of the sensor cable in the stern tube, solves the problem that the sensor cable is easy to cause the leakage of the lubricating oil of the stern shaft when the stern tube is installed, improves the working stability of the stern shaft sealing system, and can be widely applied to the sealing installation of the sensor cables of various ship types on the stern tube.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (8)
1. A sealing arrangement for cable run-out on a stern tube, said sealing arrangement comprising: the cable connector comprises a stern tube (1), wherein the tube wall of the stern tube (1) is provided with a through hole for leading out a cable (4) in the stern tube (1), the outer wall of the tube wall of the stern tube (1) is provided with a counter bore (2) with the diameter larger than that of the through hole, and the counter bore (2) is coaxial with the through hole;
the long flange short pipe (6), the first end of the long flange short pipe (6) is connected in the counter bore (2) in a welding mode, a sealing plate (3) is clamped between the first end of the long flange short pipe (6) and the bottom of the counter bore (2), and a first hole is formed in the sealing plate (3);
the first end of the short flange short pipe (7) is connected with the second end of the long flange short pipe (6) through a flange; and
the bottom of the sealing box (8) is provided with a second hole and is welded and connected to the second end of the short flange short pipe (7), the top of the sealing box (8) is connected with a cover plate (9), and the cover plate (9) is connected with a packing box (10);
the cable (4) sequentially penetrates through the through hole, the first hole, the long flange short pipe (6), the short flange short pipe (7), the second hole and the stuffing box (10) from the inside of the stern tube (1) to the outside of the stern tube (1), and epoxy resin (11) is poured in the long flange short pipe (6).
2. The sealing structure for cable take-off from stern tube according to claim 1, wherein said sealing structure comprises:
the limiting plate (5), be provided with on the limiting plate (5) and supply cable (4) pass through the third hole, pass long flange nozzle stub (6) be connected with a plurality of on cable (4) limiting plate (5), make cable (4) with the inside wall separation of long flange nozzle stub (6).
3. The sealing structure for cable take-off from stern tube according to claim 1, wherein the first hole is in interference fit with the cable (4).
4. Sealing structure for cable extraction on stern tubes according to claim 1, characterised in that the flange of the second end of the long flanged short tube (6) is horizontal.
5. The sealing structure for cable take-off from stern tube according to claim 2, wherein the number of the limiting plates (5) is 3, and the third hole is in interference fit with the cable (4).
6. The sealing structure for leading out the cable on the stern tube according to claim 5, wherein the sealing plate (3), the limiting plate (5) and the long flange short tube (6) are all made of stainless steel.
7. The sealing structure for leading out cable from stern tube according to claim 1, wherein the flanges of the long flange short tube (6) and the short flange short tube (7) are standard flanges.
8. A method of mounting a seal structure for cable run-out on a stern tube, the method comprising:
the stern tube bearing (12) and the stern tube (1) are sequentially arranged on the outer side of the stern shaft (13), a sealing cavity is arranged between the stern tube (1) and the stern shaft (13), and the cable guide tube (14) penetrates through a cable guide groove of the stern tube bearing (12) and is arranged in the sealing cavity;
after penetrating out of the cable guide groove, the cable (4) sequentially penetrates through a counter bore (2) and a sealing plate (3) on the stern tube (1), then a limiting plate (5) is installed on the cable (4), and the arrangement of the limiting plate (5) is adjusted, so that the limiting plates (5) can be uniformly arranged in the long flange short tube (6);
penetrating a cable (4) with a limiting plate (5) into the short long flange pipe (6) from one end far away from the flange and penetrating out from the other end, extending one end of the short long flange pipe (6) far away from the flange into the sealing plate (3) in the counter bore (2), and then welding the short long flange pipe (6) on the stern tube (1);
adjusting the arrangement of the cables (4) in the long flange short pipe (6) to ensure that the cables (4) are not wound and are not in contact with the inner side wall of the long flange short pipe (6), and then pouring epoxy resin (11);
welding one end of the short flange short pipe (7) far away from the flange with the bottom of the sealing box (8) in the middle, after the epoxy resin (11) is solidified, penetrating the cable (4) through the short flange short pipe (7), a second hole in the bottom of the sealing box (8) and a packing box (10) on the cover plate (9), connecting the flange end of the short flange short pipe (7) with the flange end of the long flange short pipe (6), and installing the cover plate (9) on the top of the sealing box (8);
lubricating oil (15) is injected into a sealing cavity formed between the stern tube (1) and the stern shaft (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878881.XA CN110768185B (en) | 2019-09-18 | 2019-09-18 | Sealing structure for leading out cable on stern tube and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878881.XA CN110768185B (en) | 2019-09-18 | 2019-09-18 | Sealing structure for leading out cable on stern tube and mounting method thereof |
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| CN110768185A true CN110768185A (en) | 2020-02-07 |
| CN110768185B CN110768185B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910878881.XA Active CN110768185B (en) | 2019-09-18 | 2019-09-18 | Sealing structure for leading out cable on stern tube and mounting method thereof |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD158833A1 (en) * | 1981-03-20 | 1983-02-02 | Bandow Hans Joachim | CABLE COVER, ESPECIALLY FOR HERMETIC CABLE PROCEDURES |
| CN1975215A (en) * | 2007-01-17 | 2007-06-06 | 渤海船舶重工有限责任公司 | Ship stern shaft temperature sensor sealing device and mounting method |
| CN101026294A (en) * | 2006-02-21 | 2007-08-29 | 乔伊·姆·特拉华公司 | Indirect entry cable gland assembly |
| CN201069444Y (en) * | 2007-07-31 | 2008-06-04 | 华桂龙 | Rotary speed measuring device for ship axis |
| CN202138533U (en) * | 2011-05-25 | 2012-02-08 | 张潮宏 | Oiling head and tail sealing device for tailshaft of ship |
| CN202295273U (en) * | 2011-09-24 | 2012-07-04 | 中国长江航运集团江东船厂 | Separated type drawing device for tailshaft |
| CN103307810A (en) * | 2012-03-13 | 2013-09-18 | 上海可控环境农业工程技术研究中心 | Wellhead sealing structure of mining and irrigating system of underground water source heat pump, and detection method thereof |
| US20130264774A1 (en) * | 2010-11-10 | 2013-10-10 | Exxonmobil Chemical Patents Inc. | Flange Joint and Method for Preventing a Fluid from Leaking Out Through a Flange Joint |
| CN204304340U (en) * | 2014-12-18 | 2015-04-29 | 广新海事重工股份有限公司 | Stern bearing temperature transducer cable protection pipe holder |
| CN206922355U (en) * | 2017-07-14 | 2018-01-23 | 中航威海船厂有限公司 | A kind of stuffing-box cable tube peculiar to vessel |
| JP6303072B1 (en) * | 2017-05-24 | 2018-03-28 | バルチラジャパン株式会社 | Stern pipe oil circulation system and ship |
| CN108163160A (en) * | 2017-12-21 | 2018-06-15 | 沪东中华造船(集团)有限公司 | A kind of spare water inlet detecting device in watertight cabin and its detection method |
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2019
- 2019-09-18 CN CN201910878881.XA patent/CN110768185B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD158833A1 (en) * | 1981-03-20 | 1983-02-02 | Bandow Hans Joachim | CABLE COVER, ESPECIALLY FOR HERMETIC CABLE PROCEDURES |
| CN101026294A (en) * | 2006-02-21 | 2007-08-29 | 乔伊·姆·特拉华公司 | Indirect entry cable gland assembly |
| CN1975215A (en) * | 2007-01-17 | 2007-06-06 | 渤海船舶重工有限责任公司 | Ship stern shaft temperature sensor sealing device and mounting method |
| CN201069444Y (en) * | 2007-07-31 | 2008-06-04 | 华桂龙 | Rotary speed measuring device for ship axis |
| US20130264774A1 (en) * | 2010-11-10 | 2013-10-10 | Exxonmobil Chemical Patents Inc. | Flange Joint and Method for Preventing a Fluid from Leaking Out Through a Flange Joint |
| CN202138533U (en) * | 2011-05-25 | 2012-02-08 | 张潮宏 | Oiling head and tail sealing device for tailshaft of ship |
| CN202295273U (en) * | 2011-09-24 | 2012-07-04 | 中国长江航运集团江东船厂 | Separated type drawing device for tailshaft |
| CN103307810A (en) * | 2012-03-13 | 2013-09-18 | 上海可控环境农业工程技术研究中心 | Wellhead sealing structure of mining and irrigating system of underground water source heat pump, and detection method thereof |
| CN204304340U (en) * | 2014-12-18 | 2015-04-29 | 广新海事重工股份有限公司 | Stern bearing temperature transducer cable protection pipe holder |
| JP6303072B1 (en) * | 2017-05-24 | 2018-03-28 | バルチラジャパン株式会社 | Stern pipe oil circulation system and ship |
| CN206922355U (en) * | 2017-07-14 | 2018-01-23 | 中航威海船厂有限公司 | A kind of stuffing-box cable tube peculiar to vessel |
| CN108163160A (en) * | 2017-12-21 | 2018-06-15 | 沪东中华造船(集团)有限公司 | A kind of spare water inlet detecting device in watertight cabin and its detection method |
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| CN110768185B (en) | 2021-02-02 |
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