CN109318450A - There are relaying submarine optical fiber cable insulating layer reparation injection mold, adapted to injection system and renovation technique - Google Patents
There are relaying submarine optical fiber cable insulating layer reparation injection mold, adapted to injection system and renovation technique Download PDFInfo
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- CN109318450A CN109318450A CN201811427678.2A CN201811427678A CN109318450A CN 109318450 A CN109318450 A CN 109318450A CN 201811427678 A CN201811427678 A CN 201811427678A CN 109318450 A CN109318450 A CN 109318450A
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- mold
- insulating layer
- mould
- optical fiber
- cable
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/02—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material
- B29C73/025—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material fed under pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0075—Light guides, optical cables
Abstract
The invention discloses one kind relaying submarine optical fiber cable insulating layer reparation injection mold, including mutually matched upper die and lower die, the upper die and lower die include a main mould and the secondary mould for being shaped in the main mould two sides, it is formed with the die cavity for forming optical cable insulating layer in the main mould, is formed with the cable fixation hole being connected to the die cavity, for fixing optical cable in the pair mould；The side of the main mould is equipped with the sprue being connected to the die cavity, and the other side is equipped at least one gas vent being connected to the die cavity.The invention also discloses the renovation techniques for having relaying submarine optical fiber cable insulating layer using the injection mold reparation.The renovation technique for having relaying submarine optical fiber cable insulating layer of the invention, can increase insulating layer compressive property after molding, and the properties of optical cable meet the performance requirement for having relaying submarine optical fiber cable after reparation.
Description
Technical field
The present invention relates to optical cable recovery technique fields, and in particular to one kind has relaying submarine optical fiber cable insulating layer reparation injection molding
Mold, adapted to injection system and renovation technique.
Background technique
Currently, it is all by wrapped reparation and to strip problem electrical insulation layer mostly that the insulating layer of submarine optical fiber cable is damaged, wind
Low density polyethylene (LDPE) band, and the heated baking mode melted is repaired.Referring to attached drawing 1-4, specific renovation technique are as follows: 1. by cable
Stud is straight, fixed, and reparation is partially in centre, and there are can operating space；Clean greasy dirt, the dust etc. on cable core surface；2. will lack
It falls into PE layers of place to eliminate, leak out endothecium structure (light unit, conductor etc.), it is tapered that fault location both ends are tentatively whittled into stress, then along cone
Angle slope to the processing of stress coning row further rounding, then carries out reconditioning to cone angle surface again in downward direction.Remove stress
Then the clast on the endothecium structure surface bored and exposed cleans its surface, with thin fishing line to stress cone taper end head
It is handled, removes the irregular part in end, and remove end point clast；3. polyethylene is closely wound layer by layer processed
Required repairing position；4. polytetrafluoroethylene tape is put up the closely outside around polyethylene；5. glass tape is tight
It is close to put up around the outside of polytetrafluoroethylene tape；6. copper strips closely to be put up to the wrapped surface to upper layer band, guarantee that it will
The glass tape of internal layer coats completely；7. being toasted in wrapped copper strips to the part for being surrounded with polyethylene with blowtorch, dry
During roasting, the moment to guarantee that torch flame moves back and forth in repairing range, it is ensured that repairing position is heated evenly everywhere；8. drying
After roasting, cooling is carried out to its surface with wet rag immediately, is formed, after cooling, by wrapped copper strips, glass tape, poly- four
Vinyl fluoride band successively removes；There is visual lamination if observing and repairing in part, need to repeat the above heating and cooling step,
Until drying thoroughly wrapped polyethylene；9. being handled with sheet glass corner angle part of the surface is repaired, it is obviously bigger than normal to eliminate cable core
Or the part that surface is not rounded, do further grinding process with emery cloth, guarantee cable core rounding, uniformly.
Although above-mentioned restorative procedure is able to satisfy requirement for the insulating layer problem reparation of non-relay submarine optical fiber cable,
There is following more great defect:
1. it is 4.8mm due to there is relaying submarine optical fiber cable thickness of insulating layer, and repeaterless submarine fiber optic cable thickness of insulating layer is
2.7mm, effective repair coverage of wrapped repairing method is in 3.5mm hereinafter, can fully meet reparation for repeaterless submarine fiber optic cable
It is required that but be unable to satisfy relaying submarine optical fiber cable the problem of reparation, innermost layer close to copper pipe side twining package tape present layering
Phenomenon, the thawing that can not be heated form effective insulating layer.
2. being easy at elevated pressures after wrapped due to not certain pressure in such a way that PE is with wrapped Baking out
Effect of contraction performance is generated, to influence the reliability that finished product cable uses under deep-sea.
3. the sea cable after repairing can not be by about the performance test for having relaying submarine optical fiber cable.
Summary of the invention
The technical problem to be solved in the present invention is to provide one kind relaying submarine optical fiber cable insulating layer reparation injection mold, adopts
Submarine optical fiber cable is repaired with the injection mold, insulating layer compressive property after molding can be increased, there is properties satisfaction after reparation
Relay submarine optical fiber cable performance requirement.
In order to solve the above-mentioned technical problems, the present invention provides one kind relaying submarine optical fiber cable insulating layer reparation injection mould
Tool, including mutually matched upper die and lower die, the upper die and lower die include a main mould and are shaped in the main mould two
The secondary mould of side is formed with the die cavity for forming optical cable insulating layer in the main mould, is formed with and the die cavity in the pair mould
Connection, the cable fixation hole for fixing optical cable；The side of the main mould is equipped with the sprue being connected to the die cavity, the other side
The gas vent being connected to equipped at least one with the die cavity.Multiple cooling water flow conduits are equipped on the main mould and secondary mould.
In the present invention, the pair mould plays the role of clamping and fixed cable core.The cooling water flow conduits can be with outside
Cooling water recirculation system connection, to controllably be cooled down to main mould and secondary mould.
Preferably, the main mould is equipped with multiple bottoming holes for being used to connect heating rod.
Preferably, the main mould is equipped with multiple thermometer holes, thermocouple is put into the thermometer hole, can be supervised in real time
Survey the temperature of main mould.
Preferably, the upper mold is equipped with a pair of of handle.It is highly preferred that the pair of handle is symmetrically disposed on upper mold
Two sides on secondary mould.
Preferably, being coated with teflon coatings in die cavity, to reduce viscosity when molding, make cable body surface more light
It is sliding.
Another aspect of the present invention, which additionally provides one kind, relaying submarine optical fiber cable insulating layer reparation adapted to injection system, including squeezes out
Machine, cooling water recirculation system and injection mold above-mentioned, the sprue of the discharge gate of the extruder and the injection mold
Connection, the cooling water recirculation system are connect with the cooling water flow conduits of the injection mold.
Another aspect of the present invention provide it is a kind of using adapted to injection system above-mentioned have relaying the reparation of submarine optical fiber cable insulating layer
Technique, comprising the following steps:
S1: handling optical cable to be repaired so that place to be repaired formed stress cone, the optical cable is put into mold, it is sealed；
S2: preheated mold, then into mold material feeding the air in die cavity is discharged；
S3: the gas vent of Guan Bi mould continues the material feeding into mold, so that mould inner pressure reaches 7MPa-10MPa；It protects
It is constant to hold pressure, adjusts mold temperature to 190 DEG C -200 DEG C, keeps 5min-10min；
S4: carrying out gradient cooling to mold and gradient be depressured, until after normal temperature and pressure, demoulding, the optical cable after being repaired.
In the present invention, using gradient cooling system, is conducive to slow down temperature potential difference, eliminates and be plasticized bad, bubble crackle etc.
Problem.
Preferably, the length of stress cone is 10mm-15mm in step S1, angle is 15 ° -25 °, the copper pipe of exposing
Length is 45-55mm.
Preferably, the preheating temperature of the mold is 150 DEG C -160 DEG C in step S2.
Preferably, further including carrying out pre- discharge to extruder to eliminate extruded stock into mold before material feeding in step S2
In impurity the step of.
Preferably, in step S4, the gradient cooling specifically:
Mold temperature is down to 150 DEG C -160 DEG C, keeps the temperature 2min-5min；It is cooled to 110 DEG C -120 DEG C again, keeps the temperature 2min-
5min；It then continues to be cooled to room temperature；
The gradient decompression specifically:
By mold pressure maintaining 2min-5min, it is then depressurized to 2.5MPa-3MPa, pressure maintaining 2min-5min；It is further continued for being depressurized to
Normal pressure.
In the present invention, the normal temperature and pressure refer to can with the temperature and pressure of demoulding, such as temperature can for 50 DEG C or
Hereinafter, pressure can be 0MPa.
Preferably, the rate of the cooling is 0.2 DEG C/s-0.3 DEG C/s, rate of pressure reduction 0.1Mpa/s-0.2Mpa/s.
Preferably, further including excision gas vent tailing and sprue tailing after step S4, cable surface of polishing makes outside cable
The step of diameter qualification.
Beneficial effects of the present invention:
Of the invention has relaying submarine optical fiber cable insulating layer renovation technique, by the polyethylene in mold in repair process
Application pressure is carried out, to increase insulating layer compressive property after molding, the properties of the optical cable after reparation are able to satisfy sea
The performance requirement of back light cable.
It is of the invention have relaying submarine optical fiber cable insulating layer renovation technique, it can repair and occur in insulating layer production process
Bubble, bulge etc. are abnormal, are the currently the only restorative procedures for being suitble to have relaying submarine optical fiber cable insulating layer.
Detailed description of the invention
Fig. 1 is the schematic diagram that stress cone is handled when repairing submarine optical fiber cable insulating layer in the prior art；
Fig. 2 is wrapped each layer entirety cross section view in the prior art；
Fig. 3 is wrapped each layer partial schematic diagram in the prior art；
Fig. 4 is to repair to complete schematic diagram in the prior art；
Fig. 5 is the overall structure diagram of the injection mold in the embodiment of the present invention 1；
Fig. 6 is the structural schematic diagram of lower die in Fig. 5；
Fig. 7 is the overall schematic of stress cone in the embodiment of the present invention 2；
Fig. 8 is the temperature and pressure change curve of mold in the embodiment of the present invention 2；
Fig. 9 is the optical cable photo after repairing in the embodiment of the present invention 2；
Figure label explanation: 1, upper mold；2, lower die；3, main mould；31, sprue；32, exhaust outlet；33, bottoming hole；34, it surveys
Wen Kong；35, die cavity；4, secondary mould；41, cable fixation hole；5, cooling water flow conduits；6, handle.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1: there is relaying submarine optical fiber cable insulating layer reparation adapted to injection system
In the present embodiment, the orientation such as the "front", "rear", "left", "right" are described as relative to the orientation institute in attached drawing 5
It says.
Present embodiments providing one kind has relaying submarine optical fiber cable insulating layer reparation adapted to injection system, including extruder, cooling
Water circulation system and injection mold.
Specifically, referring to Fig. 5-6, the injection mold includes mutually matched upper mold 1 and lower die 2.Wherein, upper mold 1
Include a main mould 3 and the secondary mould 4 for being shaped in 3 left and right sides of main mould with lower die 2, is formed in main mould 3 for forming light
Cable insulating layer and the die cavity 35 for spraying Teflon, be formed in secondary mould 4 be connected to the die cavity 35, the cable for fixing optical cable
Fixation hole 41.The pair mould 4 plays the role of clamping and fixed cable core.
The front side of main mould 3 is equipped with the sprue 31 being connected to die cavity 35, and rear side is equipped with what a pair was connected to the die cavity 35
Gas vent.Material feeding connector wherein can be fixedly mounted at sprue 31, to connect with extruder；Gas vent can pass through corresponding exhaust
Screw and soket head cap screw realize exhaust and sealing.
Multiple cooling water flow conduits 5 are equipped on main mould 3 and secondary mould 4, which can recycle with external cooling water
System connection, to controllably be cooled down to main mould 3 and secondary mould 4.
In the present embodiment, is set in main mould 3 and heating rod is connected to bottoming hole when heating there are four bottoming hole 33
In 33, heating can be realized.Thermometer hole 34 there are three setting in main mould 3, thermocouple is put into the thermometer hole 34, can be real-time
Monitor the temperature of main mould 3.
In the present embodiment, a pair of of handle 6 is symmetrically provided on the secondary mould 4 of 1 two sides of upper mold, the handle 6 is solid by screw
Surely it is connected on secondary mould 4.
The discharge gate of extruder and the sprue 31 of injection mold connect, the cooling of cooling water recirculation system and injection mold
Water flow passage 5 connects.
Embodiment 2: there is relaying submarine optical fiber cable insulating layer renovation technique
A kind of adapted to injection system reparation using embodiment 1 has the renovation technique of relaying submarine optical fiber cable insulating layer, including following
Step:
1. finding insulating layer bubble position, insulating layer is stripped with tools such as cutters, exposes 50mm copper pipe, is repairing position
It sets both ends and scrapes stress cone, length 10mm, about 25 ° of stress coning angle.Copper pipe surface is cleaned out with fishing line, stress cone section
It is cleaned out with alcohol.
2. the cable handled well is put into mold, cable is made to keep straight, symmetrical in mold, the thin one end of stress cone is in mould
Have on the outside of exhaust outlet.
3. heating rod and cooling water pipe are connected on mold, wherein cooling water lower die connects water inlet pipe, and upper mold connects out
Water pipe.
4. upper mold is placed into lower die, according to diagonally by mode locking screw-driving, 4, outside screw torque is after fixing
60N*M, the screw torque of inside 4 are 80N*M.
5. material feeding connector is fixed on the sprue of mold, the contact surface of itself and mold is made not have gap, then sprayed few
The release agent of amount.
6. thermocouple is put into the thermometer hole of mold, the cable on mold both sides is fixed with fixture, and the critical mold tool of fixture is prevented
Only cable lateral shift.
7. exhaust bolt is screwed on the gas vent of mold, the soket head cap screw for sealing is not twisted.
8. extruder control cabinet, cooling water tank switch are opened, heated extruder and mold, extruder temperature are set as
140℃,180℃,220℃；Mold temperature set is 100 DEG C, 100 DEG C, 100 DEG C.
9. clicking discharge button, setting speed 5RPM after extruder, mold temperature reach setting value；It resets
Mold temperature is that 160 DEG C, 160 DEG C, 160 DEG C gradually raise speed if not having noise inside barrel to 25RPM, machine discharge to be extruded
PE expect no impurity after, discharge velocity is reduced to 5RPM.
10. stopping discharge, move moulds frame, by extruder discharge gate and die feeding after mold temperature reaches 160 DEG C
Mouth connection, and (link position does not have gap, concordant), clip screwing, locking torque 65N*m are fixed with connector.
10. starting material feeding, gradually speedup to 25RPM.Gas vent is observed, when PE material is flowed out from exhaust bolt hole, meter
When discharge 2 minutes after, speed is reduced to 5RPM, screws on soket head cap screw, pressure is set as 9MPA, is changed to constant voltage mode, discharge 2
After minute, soket head cap screw is tightened.
11. mold temperature is set as 200 when pressure reaches 9MPa by observation die pressure after all exhaust bolt lockings
DEG C, constant voltage mode is double-clicked, prevents die pressure is excessive from leading to fried mould.
12. mold temperature reaches 200 DEG C, when pressure reaches 9MPa, the state is kept 5 minutes, during which die pressure meeting
There is small change, belong to normal phenomenon, is after five minutes 180 DEG C, 180 DEG C, 180 DEG C by mold temperature set, pressure is set as
9MPa continues to cool down when mold temperature drops to set temperature (180 DEG C), pressure reaches 9MPa.
13. resetting mold temperature is 160 DEG C, 160 DEG C, 160 DEG C, pressure is set as 9MPa, drops to and sets in mold temperature
Determine temperature (160 DEG C), when pressure reaches 9MPa, the state is kept to continue to cool down after 2 minutes.
14. resetting mold temperature is 140 DEG C, 140 DEG C, 140 DEG C, pressure is set as 9MPa, reaches in mold temperature and sets
Determine temperature (140 DEG C), when pressure reaches 9MPa, continues to cool down.
15. resetting mold temperature is 120 DEG C, 120 DEG C, 120 DEG C, pressure is set as 9MPa, drops to 125 in mold temperature
DEG C when, pressure is set as 3MPa, 120 DEG C, when pressure reaches 3MPa is dropped to mold temperature, continues to cool down after being kept for 2 minutes.
16. resetting mold temperature is 100 DEG C, pressure is set as 3MPa, drops to set temperature (100 in mold temperature
DEG C), pressure is when reaching 3MPa, continue to cool down.
17. resetting mold temperature is 80 DEG C, pressure is set as 0MPa, drops to set temperature (80 DEG C) in mold temperature
When, continue to cool down.
18. when motor speed is 0, stopping discharge mold temperature is reduced to 80 DEG C；Etc. mold temperatures when dropping to 50 DEG C,
Left side machine box door is opened, mold heating rod control switch is disconnected, upper mold temperature-measuring part is removed, is properly placed；Material feeding is fixed
Device disassembles, and extruder and mold are separated, and material injecting device of dismantling turns off water tank water pump, by upper mould heating rod line
Connect-disconnect plug extract, upper mold cooling water pipe is pulled out.
19. mode locking screw is successively unscrewed according to horn cupping, remove and put well, mold is risen with draw-screw and is opened, the row of beaing
Gas screw makes itself and mold separation, and two people resultant force, which carries mold off, to be put well, removes exhaust bolt, cable is taken out.
20. using vernier caliper measurement cable outer diameter, gas vent tailing is cut with vice, is cut sprue tailing with fishing line
It is disconnected, retain bottom, with cutter, sheet glass polishing cable surface, overlap, tailing is cleaned out, keep cable outer diameter qualified.
21. mold, screw, exhaust bolt is cleaned out with tools such as copper tool, screwdrivers, back-out draw-screw.
Contrast on effect
Submarine optical fiber cable after reparation is tested for the property, the results show that it is in optical property, electrical property, mechanical performance etc.
Equal test passes in test item.
The various problem bubbles that generate to insulating layer, the wrapped nothing such as bulge, pull, scratch, weigh wounded, scald at cavity
The problem of method is repaired can be solved perfectly.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. one kind has relaying submarine optical fiber cable insulating layer reparation injection mold, including mutually matched upper die and lower die, feature
It is, the upper die and lower die include a main mould and the secondary mould for being shaped in the main mould two sides, are formed in the main mould
There is the die cavity for forming optical cable insulating layer, is formed with the cable being connected to the die cavity, for fixing optical cable in the pair mould
Fixation hole；The side of the main mould offers the sprue being connected to the die cavity, the other side offer at least one with it is described
The gas vent of die cavity connection；Multiple cooling water flow conduits are equipped on the main mould and secondary mould.
2. there is relaying submarine optical fiber cable insulating layer reparation injection mold as described in claim 1, which is characterized in that the main mould
It is equipped with multiple for connecting the bottoming hole of heating rod.
3. one kind has relaying submarine optical fiber cable insulating layer reparation adapted to injection system, which is characterized in that recycled including extruder, cooling water
System and injection mold as claimed in claim 1 or 2, the sprue of the discharge gate of the extruder and the injection mold
Connection, the cooling water recirculation system are connect with the cooling water flow conduits of the injection mold.
4. a kind of have relaying submarine optical fiber cable insulating layer renovation technique, feature using adapted to injection system as claimed in claim 3
It is, comprising the following steps:
S1: handling optical cable to be repaired so that place to be repaired formed stress cone, the optical cable is put into mold, it is sealed；
S2: preheated mold, then into mold material feeding the air in die cavity is discharged；
S3: the gas vent of Guan Bi mould continues the material feeding into mold, so that mould inner pressure reaches 7-10MPa；Keep pressure not
Become, adjusts mold temperature to 190-200 DEG C, keep 5-10min；
S4: carrying out gradient cooling to mold and gradient be depressured, until after normal temperature and pressure, demoulding, the optical cable after being repaired.
5. renovation technique as claimed in claim 4, which is characterized in that in step S1, the length of stress cone is 10mm-15mm,
Angle is 15 ° -25 °, and the length of the copper pipe of exposing is 45-55mm.
6. renovation technique as claimed in claim 4, which is characterized in that in step S2, the preheating temperature of the mold is 150
℃-160℃。
7. renovation technique as claimed in claim 4, which is characterized in that further include to crowded into mold before material feeding in step S2
Machine carries out the step of pre- discharge is to eliminate the impurity in extruded stock out.
8. renovation technique as claimed in claim 4, which is characterized in that in step S4, the gradient cooling specifically:
Mold temperature is down to 150 DEG C -160 DEG C, keeps the temperature 2min-5min；It is cooled to 110 DEG C -120 DEG C again, keeps the temperature 2min-
5min；It then continues to be cooled to room temperature；
The gradient decompression specifically:
By mold pressure maintaining 2min-5min, it is then depressurized to 2.5MPa-3MPa, pressure maintaining 2min-5min；It is further continued for being depressurized to normal pressure.
9. renovation technique as claimed in claim 8, which is characterized in that the rate of the cooling is 0.2 DEG C/s-0.3 DEG C/s, drop
The rate of pressure is 0.1Mpa/s-0.2Mpa/s.
10. renovation technique as claimed in claim 4, which is characterized in that further include excision gas vent tailing and note after step S4
Material mouth tailing, cable surface of polishing, makes the step of cable outer diameter qualification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427678.2A CN109318450A (en) | 2018-11-27 | 2018-11-27 | There are relaying submarine optical fiber cable insulating layer reparation injection mold, adapted to injection system and renovation technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427678.2A CN109318450A (en) | 2018-11-27 | 2018-11-27 | There are relaying submarine optical fiber cable insulating layer reparation injection mold, adapted to injection system and renovation technique |
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| CN109318450A true CN109318450A (en) | 2019-02-12 |
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| CN110789057A (en) * | 2019-09-11 | 2020-02-14 | 中英海底系统有限公司 | Submarine optical cable splice box insulating layer mould |
| CN111092396A (en) * | 2020-01-17 | 2020-05-01 | 天台婉枫电子有限公司 | Be used for exposed department insulating layer welding device of wire |
| CN115621040A (en) * | 2022-11-18 | 2023-01-17 | 中国科学院合肥物质科学研究院 | Insulation repair structure and repair method for helium inlet and outlet pipes of superconducting magnet coil |
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| CN110789057A (en) * | 2019-09-11 | 2020-02-14 | 中英海底系统有限公司 | Submarine optical cable splice box insulating layer mould |
| CN110789057B (en) * | 2019-09-11 | 2021-11-19 | 中英海底系统有限公司 | Submarine optical cable splice box insulating layer mould |
| CN111092396A (en) * | 2020-01-17 | 2020-05-01 | 天台婉枫电子有限公司 | Be used for exposed department insulating layer welding device of wire |
| CN115621040A (en) * | 2022-11-18 | 2023-01-17 | 中国科学院合肥物质科学研究院 | Insulation repair structure and repair method for helium inlet and outlet pipes of superconducting magnet coil |
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