CN111900573B - Photoelectric separation connection cavity of ocean photoelectric composite cable and sealing detection method - Google Patents
Photoelectric separation connection cavity of ocean photoelectric composite cable and sealing detection method Download PDFInfo
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- CN111900573B CN111900573B CN202010769929.6A CN202010769929A CN111900573B CN 111900573 B CN111900573 B CN 111900573B CN 202010769929 A CN202010769929 A CN 202010769929A CN 111900573 B CN111900573 B CN 111900573B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5205—Sealing means between cable and housing, e.g. grommet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2838—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for cables
Abstract
The invention provides a splicing cavity for photoelectric separation of an ocean photoelectric composite cable and a sealing detection method. The connection cavity comprises a cable core sealing cylinder body, a connection sealing cylinder body and the like, wherein the rear end of the cable core sealing cylinder body is inserted into the connection sealing cylinder body, an end cover is installed at the rear end of the connection sealing cylinder body, and a connection interface is configured on the end cover. And two ends of the connecting sealing cylinder are respectively connected and sealed with the cable core sealing cylinder and the end cover. When the cable core of the ocean photoelectric composite cable penetrates into the continuous sealing cylinder body through the cable core sealing cylinder body, the cable core is sealed at two ends of the cable core sealing cylinder body respectively, a cavity is formed in the cable core sealing cylinder body after sealing, and fluid interfaces communicated with the cavity are arranged on the upper portion and the lower portion of the cable core sealing cylinder body, so that the ocean photoelectric composite cable can be used for carrying out on-site detection on sealing performance. The invention carries out two seals on the accessed cable core, and can carry out field detection on the sealing performance of the two seals on the field, thereby ensuring the reliability of the connection and the sealing of the cable core.
Description
Technical Field
The invention belongs to the technical field of oceans, and particularly relates to a splicing cavity for photoelectric separation of an ocean photoelectric composite cable and a sealing detection method.
Background
In the construction of a submarine scientific observation network, a shore base station and submarine observation nodes are generally connected by photoelectric composite cables, so that power supply from a shore base to the submarine observation nodes and communication between the shore base and the submarine observation nodes are realized. In the connection of the photoelectric composite cable and the submarine observation node, a key process is to penetrate the cable core of the photoelectric composite cable with the outer sheath removed into a photoelectric separation connection cavity and perform optical fiber and electric connection with subsequent components in the cavity. The sealing of the cable core of the photoelectric composite cable and the cavity penetrated by the cable core is one of the key links for guaranteeing the connection reliability. However, the existing cable core and cavity are generally sealed only once, and the sealing performance test is difficult to perform after field sealing operation, so that the hidden trouble of sealing failure caused by unexpected factors exists.
The invention provides a novel cavity for photoelectric separation and connection of an ocean photoelectric composite cable and a method for detecting sealing performance on site.
Disclosure of Invention
The invention aims to realize a cavity reliably sealed between a photoelectric composite cable core and a photoelectric separation connection cavity and a field sealing performance detection method, which can carry out field detection on sealing performance after sealing connection, ensure the reliability of connection sealing and are easy to operate. The invention specifically comprises a cavity which is composed of a cable core sealing cylinder, a connection sealing cylinder, a sealing element, an interface and the like, can detect the sealing performance on site and can be used for photoelectric separation and connection of the ocean photoelectric composite cable. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a connection cavity for photoelectric separation of an ocean photoelectric composite cable is composed of a cable core sealing cylinder body and a connection sealing cylinder body which are connected in a sealing mode, wherein the cable core sealing cylinder body is installed at an opening at the front end of the connection sealing cylinder body in a sealing mode, an end cover is installed at the rear end of the connection sealing cylinder body in a sealing mode, the cable core sealing cylinder body serves as a sealing cover of the connection sealing cylinder body, and when a cable core penetrates through the cable core sealing cylinder body and enters the connection sealing cylinder body, the two ends of the cable core sealing cylinder body are respectively sealed with the cable core;
an upper first oil hole and a lower first oil hole are formed in the cavity of the cable core sealing cylinder body, and the two first oil holes are respectively connected with two first fluid interfaces of the cable core sealing cylinder body;
two axial second sealing rings are arranged between the cable core sealing cylinder and the continuous sealing cylinder, an upper oil hole and a lower oil hole are formed in the cable core sealing cylinder or the continuous sealing cylinder between the two second sealing rings, and two second fluid interfaces are arranged on the outer wall of the cable core sealing cylinder or the continuous sealing cylinder and are respectively connected with the two second oil holes;
two axial third sealing rings are arranged between the end cover and the continuous sealing cylinder, an upper third oil hole and a lower third oil hole are formed in the end cover between the two third sealing rings or the continuous sealing cylinder, and two third fluid ports are arranged on the outer wall of the cable core sealing cylinder or the continuous sealing cylinder and are respectively connected with the two third oil holes.
Furthermore, the two first oil holes are respectively formed in the bottom surface and the top surface of the cavity;
the two second oil holes are respectively formed in the lowest end and the uppermost end of the outer wall of the cable core sealing cylinder body between the two second sealing rings or the inner wall of the continuous sealing cylinder body;
and the two third oil holes are respectively arranged at the lowest end and the uppermost end of the outer wall of the end cover between the two third sealing rings or the inner wall of the continuous sealing cylinder body.
Furthermore, the upper and lower first fluid interfaces and the upper and lower first oil holes are respectively connected through a flow channel arranged in the cable core sealing cylinder;
and the second fluid port and the second oil hole and the third fluid port and the third oil hole are respectively connected through a flow passage arranged in the cable core sealing cylinder or the continuous sealing cylinder.
Furthermore, each of the first fluid interface, the second fluid interface and the third fluid interface is provided with a detachable plug, and the first fluid interface, the second fluid interface and the third fluid interface below are used for being connected with the oil filling pump.
A sealing detection method for a photoelectric separation connection cavity of an ocean photoelectric composite cable comprises the following steps of:
s1, connecting the oil injection pump with the lower first fluid interface to inject oil into the cavity, blocking the upper first fluid interface after the oil is discharged from the upper first fluid interface, then continuing to inject the oil, stopping injecting the oil after the pressure reaches a preset pressure value, observing whether the pressure change of the lower first fluid interface exceeds a preset threshold value within preset time, if the cavity is completely sealed within a threshold value range, then adjusting the pressure of the oil injection pump to the normal pressure, disconnecting the oil injection pump from the lower first fluid interface, and sealing the lower first fluid interface by using the plug;
s3, connecting the cable core sealing cylinder to one end of the connection sealing cylinder in a sealing manner, and detecting and ensuring the connection sealing performance of the cable core sealing cylinder and the connection sealing cylinder;
and S4, fixedly installing the end cover at the other end of the continuous sealing cylinder body, and detecting and ensuring the connection tightness of the end cover and the continuous sealing cylinder body.
Further, be provided with two axial second sealing washers between the sealed barrel of cable core and the sealed barrel that continues, two second oilholes about having seted up on the sealed barrel of cable core between two second sealing washers or the sealed barrel that continues, be provided with two second fluid interfaces on the outer wall of the sealed barrel of cable core or the sealed barrel that continues and link to each other with two second oilholes respectively, detect the step of leakproofness as follows specifically in step S3:
connecting the oil injection pump with the lower second fluid interface to inject oil between the two second sealing rings, blocking the upper second fluid interface after the oil is discharged from the upper second fluid interface, then continuing to inject the oil, stopping injecting the oil after the pressure reaches a preset pressure value, observing whether the pressure change of the lower second fluid interface exceeds a preset threshold value within preset time, if the pressure change of the lower second fluid interface exceeds the preset threshold value within the threshold value range, adjusting the pressure of the oil injection pump to the normal pressure, disconnecting the oil injection pump from the lower second fluid interface, and sealing the lower second fluid interface by using a plug;
and if the preset threshold value is exceeded, the sealing operation is carried out again.
Further, two axial third seal rings are arranged between the end cover and the continuous seal cylinder, an upper third oil hole and a lower third oil hole are formed in the end cover between the two third seal rings or the continuous seal cylinder, two third fluid ports are arranged on the outer wall of the end cover or the continuous seal cylinder and are respectively connected with the two third oil holes, and the step of detecting the sealing performance in the step S4 is specifically as follows:
connecting the oil injection pump with the lower third fluid connector to inject oil between the two third sealing rings, blocking the upper third fluid connector after the oil is discharged from the upper third fluid connector, then continuing to inject the oil, stopping injecting the oil after the pressure reaches a preset pressure value, observing whether the pressure change of the lower third fluid connector exceeds a preset threshold value within preset time, if the pressure change of the lower third fluid connector exceeds the preset threshold value within the threshold value range, adjusting the pressure of the oil injection pump to the normal pressure, disconnecting the oil injection pump from the lower third fluid connector, and sealing the lower third fluid connector by using the plug;
and if the preset threshold value is exceeded, the sealing operation is carried out again.
The novel splicing cavity for photoelectric separation of the ocean photoelectric composite cable, provided by the invention, is used for carrying out two seals on the accessed cable core, and can carry out field detection on the sealing performance of the two seals on the field, so that the reliability of connection and sealing of the cable core is ensured; the end cover of the continuous sealing cylinder body is sealed by adopting two sealing rings and carrying out on-site sealing performance detection, so that the sealing reliability is ensured; the cavity body structure is simple, the field sealing detection tool is simple, and the operation is easy.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a cross-sectional structural view of a splicing cavity for photoelectric separation of an ocean photoelectric composite cable according to the present invention;
fig. 2 is a schematic cross-sectional view of the ocean photoelectric composite cable passing through the cable core sealing cylinder.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
The invention provides a connection cavity for photoelectric separation of an ocean photoelectric composite cable, which comprises a cable core sealing cylinder body 100 and a connection sealing cylinder body 200 which are hermetically connected, wherein the cable core sealing cylinder body 100 is hermetically arranged at the front end opening of the connection sealing cylinder body 200, and an end cover 300 is hermetically arranged at the rear end of the connection sealing cylinder body, as shown in figure 1-2. Through holes are arranged at two axial ends of the cable core sealing cylinder body 100, a cavity 101 is arranged in the cable core sealing cylinder body 100, the ocean photoelectric composite cable 10 penetrates through the two through holes, the middle part of the ocean photoelectric composite cable 10 penetrates through the cavity 101 to extend into the cavity 201 of the connection sealing cylinder body 200, and two connecting terminals 301 are arranged on the end cover 300 and are in photoelectric separation connection with the tail end of the cable core 10 of the ocean photoelectric composite cable.
Coaxial conical holes are formed in the two ends of the cable core sealing cylinder 100, the diameters of the conical holes are smaller as the conical holes are closer to the middle cavity 101, conical sealing elements 102 are arranged in the conical holes, and axial pressing mechanisms are arranged at the two ends of the cable core sealing cylinder 100 to axially press and fix the conical sealing elements 102; the conical sealing element 102 and the axial pressing mechanism are provided with circular holes for the ocean photoelectric composite cable 10 to pass through in the axial direction. The axial compression mechanism is composed of a compression ring 103 and a compression cap 104, annular compression grooves are further formed in two axial ends of the cable core sealing cylinder 100, the compression ring 103 is installed in the annular compression grooves and abutted against the end face of the conical sealing element 102, and the compression cap 104 is sleeved at two ends of the cable core sealing cylinder 100 through threads and compresses the compression ring 103 and the conical sealing element 102.
In an alternative embodiment, the continuous sealing cylinder 200 is an "i" type tube, both ends of the continuous sealing cylinder are provided with a circle of fixing rings 210 with screw holes, and the cable core sealing cylinder 100 and the end cap 300 are provided with connecting rings coaxially on the outer diameter. As shown in fig. 1, the connection ring 140 of the cable core sealing cylinder 100 is fixedly connected with the front end fixing ring 210 of the connection sealing cylinder 200 through a screw 211, and an axial first sealing ring 130 is arranged between the connection ring 140 and the fixing ring 210; the connection ring 240 of the end cap 300 is fixedly connected to the fixing ring 210 connected to the rear end of the seal cartridge 200 by a screw 211, and an axial first seal ring 230 is disposed between the connection ring 240 and the fixing ring 210.
The cable core sealing cylinder 100 is used as a sealing cover of the connection sealing cylinder 200, and when the cable core 10 of the ocean photoelectric composite cable passes through the cable core sealing cylinder 100 and enters the connection sealing cylinder 200, the two ends of the cable core sealing cylinder 200 are respectively sealed with the cable core 10. The cavity 101 is provided with an upper first oil hole and a lower first oil hole, the two first oil holes are respectively connected with two first fluid ports 107 and 105 of the cable core sealing cylinder 100, and the upper first fluid port 107 and the lower first fluid port 105 are respectively connected with the upper first oil hole and the lower first oil hole of the cavity 101 through an upper first flow passage 108 and a lower first flow passage 106, as shown in fig. 2.
As shown in fig. 1-2, two axial second sealing rings 120 are disposed between the outer wall of the rear end of the cable core sealing cylinder 100 extending into the continuous sealing cylinder 200 and the inner wall of the continuous sealing cylinder 200, a gap is formed between the two second sealing rings 120, two upper and lower second oil holes are disposed on the cable core sealing cylinder 100 or the continuous sealing cylinder 200 between the two second sealing rings 120, and two second fluid ports 109 and 111 connected to the two second oil holes are disposed in the cable core sealing cylinder 100 or the continuous sealing cylinder 200. Fig. 1 shows that the lower second fluid port 109 and the upper second fluid port 111 are both disposed on the cable core sealing cylinder 100, and then the corresponding second flow channels are also disposed in the cable core sealing cylinder 100, the lower second fluid port 109 is connected between the two second sealing rings 120 through the lower second flow channel 110, and the upper second fluid port 111 is connected between the two second sealing rings 120 through the upper second flow channel 112.
Two axial third sealing rings 220 are arranged between the outer wall of the end cover 300 extending into the continuous sealing cylinder 200 and the inner wall of the continuous sealing cylinder 200, a gap is arranged between the two third sealing rings 220, an upper second oil hole and a lower second oil hole are arranged on the end cover 300 or the continuous sealing cylinder 200 between the two third sealing rings 220, and two third fluid connectors 304 and 302 respectively connected with the two second oil holes are arranged in the end cover 300 or the continuous sealing cylinder 200. As shown in fig. 1, i.e., the lower third fluid port 304 and the upper third fluid port 302 are both disposed on the end cap 300, then a corresponding third flow passage is also disposed in the end cap 300. as seen in fig. 1, the lower third fluid port 304 is connected between the two third seal rings 220 via a lower third flow passage 305, and the upper third fluid port 302 is connected between the two third seal rings 220 via an upper third flow passage 303.
Wherein, the two first oil holes are respectively arranged on the bottom surface and the top surface of the cavity 101; the two second oil holes are respectively arranged at the lowest end and the uppermost end of the outer wall of the cable core sealing cylinder 100 or the inner wall of the continuous sealing cylinder 200 between the two second sealing rings 120; two third oil holes are respectively formed at the lowermost end and the uppermost end of the outer wall of the end cap 300 between the two third sealing rings 220 or the inner wall of the continuous sealing cylinder 200, so that air in the cavity 101, between the two second sealing rings 120, and between the two third sealing rings 220 can be discharged as much as possible by injecting oil. Each of the first fluid port (i.e., upper first fluid port 107, lower first fluid port 105), the second fluid port (i.e., lower second fluid port 109 and upper second fluid port 111), and the third fluid port (i.e., lower third fluid port 304 and upper third fluid port 302) is configured with a removable plug, and the lower first fluid port 105, lower second fluid port 109, and lower third fluid port 304 are configured for connection to a fill pump.
The first seal ring 130(230), the second seal ring 120, and the third seal ring 220 are elastic O-rings made of an anti-aging material.
Meanwhile, the invention also provides a field sealing performance detection method based on the splicing cavity, which comprises the following steps:
s1, providing a cable core sealing cylinder 100 with a cavity 101 inside and through holes at two axial ends, respectively arranging at least one first fluid interface communicated with the cavity 101 on the upper surface and the lower surface of the cable core sealing cylinder 100, penetrating the ocean photoelectric composite cable 10 through the two through holes of the cable core sealing cylinder 100, and allowing the tail end of the ocean photoelectric composite cable 10 to exceed the through holes for a distance and pass through the cavity 101 in the middle.
S2, filling the cavity 101 with oil through the lower first fluid port 105, discharging air through the upper first fluid port 107, checking the tightness of the cavity 101 after the cavity 101 is filled with oil, and then blocking each first fluid port. Specifically, the steps for detecting the sealing performance of the cavity 101 are as follows:
after oil is discharged from the upper first fluid interface 107 in the oil injection process, the upper first fluid interface 107 is blocked, and then the manual liquid pump is continuously used for injecting oil into the cavity 101 through the lower first fluid interface 105 until the pressure of the manual liquid pump reaches a preset pressure value (for example, 1.5 times of the working pressure), and the manual liquid pump is stopped; waiting for 5 minutes, the pressure is not obviously reduced, which indicates that the inside of the cable core sealing cylinder 100 is effectively sealed; if the pressure drops rapidly or the pressure hardly rises, it indicates that the seal has not achieved the desired sealing effect and needs to be inspected, resealed and tested. After the sealing is ensured to be complete, the pressure is adjusted to normal pressure by using a manual liquid pump, the connection between the lower first fluid interface 105 and the manual liquid pump is released, and the lower first fluid interface 105 is sealed by using a sealing plug; at this time, the sealing of the cable core 1 and the detection of the sealing performance thereof are completed.
S3, the cable core sealing cylinder 100 is hermetically connected to one end of a connection sealing cylinder 200, so that the tail end of the ocean photoelectric composite cable 10 is located in the cavity 201 inside the connection sealing cylinder 200, and the sealing performance of the connection between the cable core sealing cylinder 100 and the connection sealing cylinder 200 is detected and ensured. Two axial second sealing rings 120 are arranged between the outer wall of the rear end of the cable core sealing cylinder 100 extending into the continuous sealing cylinder 200 and the inner wall of the continuous sealing cylinder 200, and a gap is reserved between the two second sealing rings 120. Two upper and lower second fluid interfaces are arranged on the outer wall of the cable core sealing cylinder body 100 or the continuous sealing cylinder body 200, a second flow channel is arranged in the cable core sealing cylinder body 100 or the continuous sealing cylinder body 200, two second fluid interfaces at one end of the second flow channel are connected, the other end of the second flow channel is arranged on the outer wall of the cable core sealing cylinder body 100 or the inner wall of the continuous sealing cylinder body 200 between the two second sealing rings 120, and the steps of detecting and ensuring the connection tightness of the cable core sealing cylinder body 100 and the continuous sealing cylinder body 200 are as follows:
after oil is discharged from the upper second fluid port 111 in the oil injection process, the upper second fluid port 111 is blocked, and then the manual liquid pump is continuously used for injecting oil into the gap between the two second sealing rings 120 through the lower second fluid port 109 until the pressure of the manual liquid pump reaches a preset pressure value (for example, 1.5 times of the working pressure), and the manual liquid pump is stopped; waiting for 5 minutes, the pressure is not obviously reduced, which indicates that the cable core sealing cylinder 100 and the continuous sealing cylinder 200 are effectively connected in a sealing way; if the pressure drops rapidly or the pressure hardly rises, it indicates that the seal has not achieved the desired sealing effect and needs to be inspected, resealed and tested. After the sealing is ensured to be complete, the pressure is adjusted to normal pressure by using a manual liquid pump, the connection between the lower second fluid interface 109 and the manual liquid pump is released, and the lower second fluid interface 109 is sealed by using a sealing plug; at this time, the detection of the sealing performance of the connection between the cable core sealing cylinder 100 and the connection sealing cylinder 200 is completed.
And S4, performing photoelectric separation on the tail end of the ocean photoelectric composite cable 10 and respectively connecting the tail end of the ocean photoelectric composite cable with the two connecting terminals 301 of the end cover 300.
S5, the cap 300 is fixedly mounted on the other end of the continuous sealing cylinder 200, and the sealing property of the connection between the cap 300 and the continuous sealing cylinder 200 is detected and ensured. Two axial third sealing rings 220 are arranged between the outer wall of the front end of the end cover 300 extending into the continuous sealing cylinder 200 and the inner wall of the continuous sealing cylinder 200, a gap is reserved between the two third sealing rings 220, an upper third fluid port and a lower third fluid port are arranged on the outer wall of the end cover 300, a third flow channel is arranged in the end cover 300, the two third fluid ports at one end of the third flow channel are connected, the other end of the third flow channel is arranged on the outer wall of the end cover 300 between the two third sealing rings 220, and the steps of detecting and confirming the connection tightness between the end cover 300 and the continuous sealing cylinder 200 are as follows:
after oil is discharged from the upper third fluid port 302 in the oil injection process, the upper third fluid port 303 is blocked, and then the manual liquid pump is continuously used for injecting oil into the gap between the third sealing rings 220 through the lower third fluid port 304 until the pressure of the manual liquid pump reaches a preset pressure value (for example, 1.5 times of the working pressure), and the manual liquid pump is stopped; waiting for 5 minutes, the pressure is not obviously reduced, which indicates that the end cap 300 and the continuous sealing cylinder body 200 are effectively connected in a sealing way; if the pressure drops rapidly or the pressure hardly rises, it indicates that the seal has not achieved the desired sealing effect and needs to be inspected, resealed and tested. After the sealing is ensured to be complete, the pressure is adjusted to normal pressure by using a manual liquid pump, the connection between the lower third fluid connector 304 and the manual liquid pump is released, and the lower third fluid connector 304 is sealed by using a sealing plug; at this time, the detection of the sealing performance of the connection of the end cap 300 and the succeeding sealing cylinder 200 is completed.
After the above process is completed, whether the outer pressing cap 104 and each screw 211 are fastened is checked, the sealing plugs of each first fluid port (the upper first fluid port 107 and the lower first fluid port 105), each second fluid port (the upper second fluid port 111 and the lower second fluid port 109), and each third fluid port (the upper third fluid port 302 and the lower third fluid port 304) are checked, the connector interfaces such as the two connection terminals 301 are checked, and it is confirmed that there is no looseness, and the connection is completed.
Finally, fixing the outer armor of the photoelectric composite cable and installing and connecting the outer armor with a seabed main base station frame; the corresponding contacts of the main base station are connected to the connectors on the corresponding connector interfaces represented by the two connection terminals 301 on the end cap 300. Carrying out a communication test on the system by powering on from a shore base station; stopping the test after all the normal conditions are met, and powering off the shore base station; laying equipment such as a main base station and the like from a ship to the seabed; and (5) testing from the shore base station, and withdrawing the ship after normal operation to finish the operation.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (4)
1. A connection cavity for photoelectric separation of an ocean photoelectric composite cable is composed of a cable core sealing cylinder body and a connection sealing cylinder body which are connected in a sealing mode, wherein the cable core sealing cylinder body is installed at an opening at the front end of the connection sealing cylinder body in a sealing mode, and an end cover is installed at the rear end of the connection sealing cylinder body in a sealing mode;
an upper first oil hole and a lower first oil hole are formed in a cavity of the cable core sealing cylinder body, the two first oil holes are respectively connected with two first fluid ports of the cable core sealing cylinder body, the two first oil holes are respectively formed in the bottom surface and the top surface of the cavity, the lower first oil hole is used for injecting oil into the cavity and exhausting air through the upper first oil hole, and then the sealing performance of the cavity is tested in a pressurizing mode;
two axial second sealing rings are arranged between the cable core sealing cylinder and the continuous sealing cylinder, an upper second oil hole and a lower second oil hole are formed in the cable core sealing cylinder or the continuous sealing cylinder between the two second sealing rings, two second fluid interfaces are arranged on the outer wall of the cable core sealing cylinder or the continuous sealing cylinder and are respectively connected with the two second oil holes, the two second oil holes are respectively formed in the lowest end and the uppermost end of the outer wall of the cable core sealing cylinder between the two second sealing rings or the inner wall of the continuous sealing cylinder, and after the oil is injected between the two second sealing rings from the lower second oil hole and air is exhausted through the upper second oil hole, the sealing performance between the two second sealing rings is tested in a pressurizing manner;
two axial third sealing rings are arranged between the end cover and the continuous sealing cylinder body, an upper third oil hole and a lower third oil hole are formed in the end cover between the two third sealing rings or the continuous sealing cylinder body, two third fluid ports are arranged on the outer wall of the cable core sealing cylinder body or the continuous sealing cylinder body and are respectively connected with the two third oil holes, the two third oil holes are respectively formed in the outer wall of the end cover between the two third sealing rings or the lowest end and the uppermost end of the inner wall of the continuous sealing cylinder body, oil is injected into the space between the two third sealing rings through the lower third oil hole, and after air is exhausted through the upper third oil hole, the sealing performance of the cavity is tested in a pressurizing mode.
2. The splicing cavity for photoelectric separation of the ocean photoelectric composite cable according to claim 1, wherein the upper and lower first fluid ports and the upper and lower first oil holes are connected through a flow passage arranged inside the cable core sealing cylinder respectively;
and the second fluid port and the second oil hole and the third fluid port and the third oil hole are respectively connected through a flow passage arranged in the cable core sealing cylinder or the continuous sealing cylinder.
3. The splicing cavity for optical-electrical separation of the ocean photoelectric composite cable according to claim 2, wherein each of the first fluid port, the second fluid port and the third fluid port is provided with a detachable plug, and the first fluid port, the second fluid port and the third fluid port below the first fluid port, the second fluid port and the third fluid port are used for being connected with a filling pump.
4. A seal detection method for a photoelectric separation connection cavity of an ocean photoelectric composite cable is characterized in that an upper first oil hole and a lower first oil hole are formed in a cavity of the cable core seal cylinder body and are respectively connected with two first fluid interfaces outside the cable core seal cylinder body, and the seal detection method comprises the following steps:
s1, connecting the oil injection pump with the lower first fluid interface to inject oil into the cavity, blocking the upper first fluid interface after the oil is discharged from the upper first fluid interface, then continuing to inject the oil, stopping injecting the oil after the pressure reaches a preset pressure value, observing whether the pressure change of the lower first fluid interface exceeds a preset threshold value within preset time, if the cavity is completely sealed within a threshold value range, then adjusting the pressure of the oil injection pump to the normal pressure, disconnecting the oil injection pump from the lower first fluid interface, and sealing the lower first fluid interface by using the plug;
s2, seal the one end at the sealed barrel that continues with the sealed barrel of cable core sealing connection, detect and ensure the leakproofness that the sealed barrel of cable core and the sealed barrel that continues are connected, be provided with two axial second sealing washers between the sealed barrel of cable core and the sealed barrel that continues, two upper and lower second oilholes have been seted up on the sealed barrel of cable core between two second sealing washers or the sealed barrel that continues, it links to each other with two second oilholes respectively to be provided with two second fluid interfaces on the sealed barrel of cable core or the outer wall of the sealed barrel that continues, detect the step of leakproofness specifically as follows: connecting the oil injection pump with the lower second fluid interface to inject oil between the two second sealing rings, blocking the upper second fluid interface after the oil is discharged from the upper second fluid interface, then continuing to inject the oil, stopping injecting the oil after the pressure reaches a preset pressure value, observing whether the pressure change of the lower second fluid interface exceeds a preset threshold value within preset time, if the pressure change of the lower second fluid interface exceeds the preset threshold value within the threshold value range, adjusting the pressure of the oil injection pump to the normal pressure, disconnecting the oil injection pump from the lower second fluid interface, sealing the lower second fluid interface by using the plug, and if the pressure change of the lower second fluid interface exceeds the preset threshold value, sealing again;
s3, fixedly installing the end cover at the other end of the continuous sealing cylinder, detecting and ensuring the sealing performance of the end cover and the continuous sealing cylinder, arranging two axial third sealing rings between the end cover and the continuous sealing cylinder, arranging an upper third oil hole and a lower third oil hole on the end cover between the two third sealing rings or the continuous sealing cylinder, arranging two third fluid connectors on the outer wall of the end cover or the continuous sealing cylinder to be respectively connected with the two third oil holes, and specifically, the step of detecting the sealing performance is as follows: the oil injection pump is connected with the lower third fluid connector to inject oil between the two third sealing rings, the third fluid connector is plugged after the oil is discharged from the upper third fluid connector, the oil injection is continued subsequently, the oil injection is stopped after the pressure reaches a preset pressure value, whether the pressure change of the third fluid connector exceeds a preset threshold value or not is observed within a preset time, if the cavity is well sealed within the threshold value range, the pressure of the oil injection pump is adjusted to the normal pressure, the connection between the oil injection pump and the lower third fluid connector is disconnected, the lower third fluid connector is sealed by the plug, and if the pressure change exceeds the preset threshold value, the sealing operation is carried out again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010769929.6A CN111900573B (en) | 2020-08-04 | 2020-08-04 | Photoelectric separation connection cavity of ocean photoelectric composite cable and sealing detection method |
Applications Claiming Priority (1)
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| CN110932220A (en) * | 2019-11-15 | 2020-03-27 | 烽火海洋网络设备有限公司 | Seabed photoelectric separation equipment |
| CN211042625U (en) * | 2019-12-24 | 2020-07-17 | 长春市三环通用设备有限公司 | Sealing detection device for framework oil seal |
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| CN102879156A (en) * | 2012-09-17 | 2013-01-16 | 中国石油大学(北京) | Sealing pressure test method for O-shaped seal rings and sealing device for O-shaped seal rings |
| CN103915814A (en) * | 2013-12-10 | 2014-07-09 | 中国船舶重工集团公司七五○试验场 | Watertight joint used for butt joint of underwater cables |
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| CN111900573A (en) | 2020-11-06 |
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