CN109945074B - Underground sewage pipeline health detection device and installation method thereof - Google Patents
Underground sewage pipeline health detection device and installation method thereof Download PDFInfo
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- CN109945074B CN109945074B CN201910177332.XA CN201910177332A CN109945074B CN 109945074 B CN109945074 B CN 109945074B CN 201910177332 A CN201910177332 A CN 201910177332A CN 109945074 B CN109945074 B CN 109945074B
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Abstract
The invention relates to an underground sewage pipeline health detection device and an installation method of the detection device, wherein the underground sewage pipeline health detection device comprises a detection optical cable which is laid on a pipeline along the length direction of the pipeline, the detection optical cable is composed of an axial section and an annular section which are distributed at intervals, a fixing device for fixing the detection optical cable on the pipeline is arranged on the pipeline, the detection optical cable is fixed on the pipeline through the fixing device, during detection, data in the axis direction of the pipeline are detected by the axial section, the annular data are detected by the annular section, and the detection optical cable is mutually combined through a straight line section and the annular section during laying, so that the detection optical cable can be ensured to completely cover the pipeline, the pipeline can be accurately detected, the use length of the detection optical cable during laying can be saved, waste is avoided, meanwhile, the laying difficulty is reduced, and the.
Description
Technical Field
The invention relates to the technical field of pipeline health detection, in particular to an underground sewage pipeline health detection device and an installation method of the detection device.
Background
The pipeline transportation has the characteristics of safety, convenience and economy, but the pipeline can have failure accidents due to external disturbance, corrosion, pipes, construction quality and the like. In order to ensure the safety of pipeline transportation, the health state of the pipeline needs to be monitored in real time so as to deal with serious consequences caused by pipeline corrosion and stress damage. The distributed optical fiber sensing technology developed in recent years becomes a new method applied to pipeline health monitoring at home and abroad at present due to the advantages of long distance, high sensitivity, passive corrosion resistance, online detection and the like, and is rapidly developed.
The invention patent with publication number CN109027704A provides a pipeline monitoring system and a monitoring method based on micro-structure optical fiber distributed sensing, which comprises a distributed acoustic wave sensing subsystem, an early warning identification subsystem and a micro-structure optical fiber laid on a pipeline to be monitored; and the data such as the stress, the temperature and the like of the pipeline can be fed back by transmitting signals into the microstructure optical fiber and detecting the reflected signals of the microstructure optical fiber.
When laying, optic fibre is the spiral among the prior art and lays inside the pipeline, can guarantee like this that optic fibre covers the pipeline inner wall completely, but adopts the spiral to arrange optic fibre, and the optic fibre length that needs can be very long, causes optic fibre extravagant easily.
Disclosure of Invention
The invention aims to provide a health detection device for an underlying sewage pipeline, which can ensure the coverage degree, reduce the laying length of optical fibers and save energy.
The above object of the present invention is achieved by the following technical solutions: the underground sewage pipeline health detection device comprises a detection optical cable laid on a pipeline along the length direction of the pipeline, wherein the detection optical cable is composed of an axial section and an annular section in interval distribution, and a fixing device for fixing the detection optical cable on the pipeline is arranged on the pipeline.
Through adopting above-mentioned technical scheme, fix the detection optical cable on the pipeline through fixing device, during the detection, the ascending data of axial section detection pipeline axis direction, the annular data is detected to the hoop section, to detect the optical cable and make up each other through straightway and hoop section when laying, both can guarantee that the detection optical cable covers the pipeline completely, accurate detects the pipeline, can save the use length of detection optical cable when laying again, avoid appearing extravagantly, reduce simultaneously and lay the degree of difficulty, practice thrift construction cost.
The invention is further configured to: the fixing device comprises a plurality of fixing pieces distributed along the length direction of the detection optical cable, the fixing pieces are fixedly arranged on the pipeline, and the fixing pieces are fixedly connected with the detection optical cable.
Through adopting above-mentioned technical scheme, when laying, fix the mounting on optic fibre earlier, fix the mounting on the pipeline again afterwards, can realize the fixed of detection optical cable and pipeline, fixing device comprises a plurality of mounting, can lay the mounting according to the length of detection optical cable, and every mounting is equivalent to a fixed point, fixes optic fibre on the pipeline, and very nimble realization optic fibre is fixed simple to operate.
The invention is further configured to: the mounting includes the base fixed with the pipeline, it is connected with the bottom plate to slide along the detection optical cable axial on the base, be equipped with the clamp plate of fixing the detection optical cable on the bottom plate, be equipped with the locating part that the one-way slip was done to the restriction bottom plate on the base.
Through adopting above-mentioned technical scheme, during the use, take off bottom plate and clamp plate from the base earlier, place between clamp plate and the bottom plate detection optical cable, screw the screw, can realize detecting optical cable and clamp plate and bottom plate fixed. After the detection optical cable is installed on the bottom plate, the bottom plate is installed on the base again, the bottom plate and the base can be fixed through limiting of the limiting part, and the bottom plate is fixed on the base, so that the fixation of the detection optical cable and the base is completed.
The invention is further configured to: the base is provided with a T-shaped groove along the axial direction of the detection optical cable, the bottom plate is provided with a T-shaped block matched with the T-shaped groove, the limiting part comprises a ratchet bar arranged on the bottom surface of the T-shaped block along the length direction of the T-shaped block, and the bottom surface of the T-shaped groove is provided with a pawl matched with the ratchet bar and a spring plate for driving the pawl to rotate towards the ratchet bar.
Through adopting above-mentioned technical scheme, during the installation, T-shaped piece and T-slot fit can realize sliding between bottom plate and the base and be connected, and under the drive of shell fragment, pawl and ratchet remain the butt throughout, can realize the one-way slip of bottom plate on the base.
The invention is further configured to: the optical fiber detection device is characterized in that a wire releasing groove used for installing a fixing piece and optical fibers is formed in the pipeline along the distribution direction of the detection optical cables, and an adhesive filled in the wire releasing groove after installation is completed is arranged in the wire releasing groove.
Through adopting above-mentioned technical scheme, after the installation finishes, the bonding agent can fill the unwrapping wire groove, and the bonding agent can get up the complete cladding of detection optical cable like this to play the guard action to detecting optical cable, avoid the liquid in the use pipeline to cause the damage to detecting optical cable.
The invention is further configured to: and an operating hole intersected with the pawl is formed in the base along the length direction of the T-shaped groove, and the operating hole penetrates through the base.
Through adopting above-mentioned technical scheme, after wanting to remove the spacing of pawl to the ratchet, only need to insert the member to the handle hole, push up the pawl down, pawl and ratchet separation can remove the spacing of pawl to the ratchet, realize the dismantlement of bottom plate and base, the position of adjustment detection optical cable among the easy to assemble process.
Another object of the present invention is to provide a method for installing a detection device, which can save the amount of the detection optical cable and ensure the detection effect of the detection optical cable.
The mounting method for mounting the detection device comprises the following steps:
step S1: the method comprises the following steps of (1) setting a line, setting out the line on the surface of a pipeline by drawing a line with an ink box, drawing a preset laying line, keeping the line straight along the axial laying part direction of the pipeline, and ensuring the line to be circular along the circumferential laying part direction;
step S2: polishing, namely polishing a pay-off groove with the width of 3-5cm along a line selected by the mark through an electric polishing machine so as to be ready for the arrangement and installation of the detection optical cables;
step S3: removing dust, namely cleaning residual ash in the wire discharging groove by adopting dust removing equipment;
step S4: paying off, namely placing the detection optical cable into a paying-off groove along the length of the paying-off groove, laying a fixing piece along the length direction of the detection optical cable, fixing a base into the paying-off groove, installing a bottom plate and the fixing piece outside the detection optical cable and fixing the bottom plate and the fixing piece with the detection optical cable, and then inserting a T-shaped block on the bottom plate into a T-shaped groove on the base;
step S5: the fixing piece and the detection optical cable are completely covered by the adhesive agent;
step S6: and laying detection optical cable outgoing line protection, and converting a fiber core in the detection optical cable into a high-strength armored optical cable at an outgoing line part for protection and leading out.
Through adopting above-mentioned technical scheme, the mode that will detect the optical cable setting and be annular and sharp combination is arranged, can effectually practice thrift the quantity of detecting the optical cable, guarantees the detection effect of detecting the optical cable simultaneously, blows off the surplus ash in the wire arrangement groove to guarantee the area of contact of follow-up adhesive and wire arrangement groove, improve the fixed effect of adhesive and wire arrangement groove.
The invention is further configured to: between step S4 and step S5, step S41 is added: prestretching, installing the arrangement direction of the detection optical cables, sequentially sliding the bottom plate on the base, limiting the bottom plate by the abutting of the pawl and the ratchet bar, and tensioning the detection optical cables between the adjacent fixing pieces.
By adopting the technical scheme, the detection optical cable is subjected to pre-tensioning operation, and the influence on the later-stage test effect caused by the loose and bent detection optical cable can be avoided.
The invention is further configured to: in step S5, step S51 is added, and after the adhesive is filled, the gel is heated by an electric blower to sufficiently bond and fix the detection cable to the surface of the duct.
Through adopting above-mentioned technical scheme, the electric hair drier can accelerate the fixed shaping of adhesive, has guaranteed the fixed effect of adhesive simultaneously, has improved the structural strength of adhesive.
The invention is further configured to: in step S1, for the pipeline laid in open cut, the detection optical cable is arranged on the outer wall of the pipeline; for the pipeline laid by adopting the undercut mode, the detection optical cable is arranged on the inner wall of the pipeline.
Through adopting above-mentioned technical scheme, select the position of laying of detection optical cable according to concrete construction conditions, not only convenient operation practices thrift the cost moreover, because the detection optical cable only need with the pipeline contact, can realize detecting, consequently will detect the optical cable setting at pipeline inner wall or pipeline outer wall, can not lead to the fact the influence to the testing process.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the detection optical cable is laid in a mode of combining the axial section and the annular section, so that the use length of the detection optical cable can be effectively reduced, the cost is saved, and the installation is convenient;
2. the detection optical cable is pre-stretched between the addition of the adhesive, so that the influence on the later-period test effect caused by the loose and bent detection optical cable can be avoided.
Drawings
Fig. 1 is a view showing a laying state of the first embodiment of the present invention.
Fig. 2 is a vertical sectional view (partial) in fig. 1.
Fig. 3 is a schematic view of a detection cable according to a first embodiment of the present invention.
Fig. 4 is a schematic view of the fastener assembly according to the first embodiment of the present invention.
Fig. 5 is a vertical sectional view of fig. 4.
In the figure, 1, a pipeline; 11. a wire releasing groove; 2. detecting an optical cable; 21. an axial section; 22. an annular section; 3. a base; 31. a T-shaped slot; 4. a base plate; 41. pressing a plate; 42. a T-shaped block; 43. a rubber pad; 5. a ratchet bar; 6. a pawl; 7. an operation hole; 8. and a fixing member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1 and 2, a health detection device for an underground sewage pipeline 1 disclosed by the invention comprises a detection optical cable 2 laid on a pipeline 1 along the length direction of the pipeline 1, referring to fig. 3, the detection optical cable 2 is formed by an axial section 21 and an annular section 22 which are distributed at intervals, the interval between the axial section 21 and the annular section 22 is determined according to the inner diameter of the pipeline 1, if the inner diameter of the pipeline 1 is small, the pipeline 1 is completely arranged in a straight line, a fixing device for fixing the detection optical cable 2 on the pipeline 1 is arranged on the pipeline 1, during detection, the axial section 21 detects data in the axial direction of the pipeline 1, the annular section 22 detects annular data, and the detection optical cable 2 is mutually combined through the straight line section and the annular section 22 during laying, so that the detection optical cable 2 can be ensured to completely cover the pipeline 1, the pipeline 1 can be accurately detected, and the use length of the detection optical cable 2, avoid appearing extravagantly, reduce simultaneously and lay the degree of difficulty, practice thrift construction cost. In addition, in this embodiment, the detection optical cable 2 is a micro-structured optical fiber, and the detection principle is the same as that in the prior art, which is not described herein again.
In this embodiment, refer to fig. 2 and 4, fixing device includes a plurality of mounting 8 along the length direction distribution of detection optical cable 2, mounting 8 is fixed on pipeline 1, mounting 8 is fixed with detection optical cable 2, when laying, fix mounting 8 on optic fibre earlier, fix mounting 8 on pipeline 1 again afterwards, can realize the fixed of detection optical cable 2 and pipeline 1, fixing device comprises a plurality of mounting 8, can lay mounting 8 according to the length of detection optical cable 2, every mounting 8 is equivalent to a fixed point, fix optic fibre on pipeline 1, very nimble realization optic fibre is fixed, simple to operate.
In this embodiment, referring to fig. 4 and 5, the fixing member 8 includes a base 3 fixed to the pipeline 1, the base 3 is fixed to the pipeline 1 by bonding, welding or expansion screws, a bottom plate 4 is slidably connected to the base 3 along an axial direction of the detection optical cable 2, a pressing plate 41 for fixing the detection optical cable 2 to the bottom plate 4 is disposed on the bottom plate 4, semicircular sinking grooves are disposed on the pressing plate 41 and the bottom plate 4 along the axial direction of the detection optical cable 2, rubber pads 43 are disposed in the sinking grooves, the pressing plate 41 and the bottom plate 4 are fixed by being pressed by screws, in use, the bottom plate 4 and the pressing plate 41 are taken down from the base 3, the detection optical cable 2 is placed between the pressing plate 41 and the bottom plate 4, the screws are screwed, the detection optical cable 2 can be fixed to the pressing plate 41 and the bottom plate 4, and the rubber pads 43 can increase friction between the detection optical, the fixing effect of the detection optical cable 2, the pressing plate 41 and the bottom plate 4 is improved. Still be equipped with the locating part that restriction bottom plate 4 was one-way slippage on base 3, after detection optical cable 2 installed on bottom plate 4, with bottom plate 4 reinstallate on base 3, through the spacing of locating part, can realize the fixed of bottom plate 4 and base 3, fix bottom plate 4 on base 3 to accomplish detection optical cable 2 and base 3's fixed.
Referring to fig. 4 and 5, a T-shaped groove 31 is axially formed on the base 3 along the detection optical cable 2, the T-shaped groove 31 penetrates through the base 3, a T-shaped block 42 matched with the T-shaped groove 31 is arranged on the bottom plate 4, when the optical cable is installed, the T-shaped block 42 is matched with the T-shaped groove 31, so that the sliding connection between the bottom plate 4 and the base 3 can be realized, the limiting member comprises a ratchet 5 arranged on the bottom surface of the T-shaped block 42, the ratchet 5 is embedded on the bottom surface of the T-shaped block 42, a pawl 6 matched with the ratchet 5 and a spring plate for driving the pawl 6 to rotate towards the ratchet 5 are arranged on the bottom surface of the T-shaped groove 31, the pawl 6 and the ratchet 5 are always abutted under the driving of the spring plate, so that the unidirectional sliding of the bottom plate 4 on the base 3 can be realized, when the optical cable is installed, the direction of the ratchet 5 on the first, the direction of the third fixing part 8 and the later fixing parts 8 is the same as that of the other fixing parts 8, so that when the optical cable detection device is installed, the bottom plate 4 on the base 3 is sequentially slid along the installation direction, the optical cable detection device can be tensioned, and the fixing effect of the optical cable detection device 2 is further improved.
Referring to fig. 4 and 5, in order to conveniently cancel the limit of the limit member during installation, an operation hole 7 intersecting with the pawl 6 is formed in the base 3 along the length direction of the T-shaped groove 31, the operation hole 7 penetrates through the base 3, when the limit of the pawl 6 on the ratchet bar 5 is to be cancelled, only a rod is inserted into the operation hole 7, the pawl 6 is pushed down, the pawl 6 is separated from the ratchet bar 5, the limit of the pawl 6 on the ratchet bar 5 can be cancelled, the bottom plate 4 and the base 3 can be detached, and the position of the detection optical cable 2 can be adjusted during installation.
Referring to fig. 1 and 2, in order to protect the detection optical cable 2, a wire releasing groove 11 for installing a fixing part 8 and optical fibers is formed in the pipeline 1 along the distribution direction of the detection optical cable 2, the wire releasing groove 11 is arranged according to the trend of the detection optical cable 2, an adhesive which is filled in the wire releasing groove 11 after installation is arranged in the wire releasing groove 11, after installation is completed, the wire releasing groove 11 can be filled with the adhesive, so that the detection optical cable 2 can be completely coated by the adhesive, the detection optical cable 2 is protected, and damage to the detection optical cable 2 caused by liquid in the pipeline 1 in the using process is avoided.
The implementation principle of the embodiment is as follows: during installation, the base 3 is fixed in the pay-off groove 11, then the bottom plate 4 and the pressing plate 41 are taken down from the base 3, the bottom plate 4 and the pressing plate 41 are fixed outside the detection optical cable 2, after the fixation is finished, the bottom plate 4 is installed on the base 3 again, the bottom plate 4 is slid, the ratchet bar 5 on the bottom plate 4 is in contact with the pawl 6 in the T-shaped groove 31, and the bottom plate 4 is slid until the detection optical cable 2 is tightened.
Example two:
a method of installing a test device, comprising the steps of:
step S1: the method comprises the steps of setting a line, firstly setting out the line on the surface of the pipeline 1 by using an ink box to draw the line to be laid, keeping the direction of the part of the line which is laid along the axial direction of the pipeline 1 straight, ensuring that the part of the line which is laid along the circumferential direction is circular, and roughly planning the trend of the detection optical cable 2 by adopting the ink box line-drawing mode, so that the accuracy in the laying process is improved.
In step S1, for the pipeline 1 laid by open cut, the detection optical cable 2 is arranged on the outer wall of the pipeline 1; to adopting the pipeline 1 that the undercut mode was laid, detection optical cable 2 sets up on 1 inner wall of pipeline, selects the position of laying of detection optical cable 2 according to specific construction conditions, not only convenient operation practices thrift the cost moreover, because detection optical cable 2 only need with 1 contact of pipeline, can realize detecting, consequently will detect optical cable 2 and set up at 1 inner wall of pipeline or 1 outer wall of pipeline, can not lead to the fact the influence to the testing process.
Step S2: and (3) polishing, namely polishing the pay-off grooves 11 with the width of 3-5cm along the line selected by the mark by using an electric polishing machine so as to prepare for the arrangement and installation of the detection optical cables 2, wherein in the embodiment, the width of the pay-off grooves 11 is preferably 3cm, and the proper width of the pay-off grooves 11 is selected according to the number of the embedded detection optical cables 2.
Step S3: and (3) removing dust, namely cleaning the residual ash in the pay-off groove 11 by adopting dust removing equipment, wherein the dust removing equipment can adopt an electric blower to blow out the residual ash in the pay-off groove 11, so that the contact area of the subsequent adhesive and the pay-off groove 11 is ensured, and the fixing effect of the adhesive and the pay-off groove 11 is improved.
Step S4: paying off, placing the detection optical cable 2 into the paying-off groove 11 along the length of the paying-off groove 11, laying the fixing piece 8 along the length direction of the detection optical cable 2, fixing the base 3 into the paying-off groove 11, installing the bottom plate 4 and the fixing piece 8 outside the detection optical cable 2 and fixing the detection optical cable 2, and then inserting the T-shaped block 42 on the bottom plate 4 into the T-shaped groove 31 on the base 3, wherein the detection optical cable 2 can be fixed in other fixing modes, such as welding and the like.
Step S5: after the detection optical cable 2 is laid and the tensioning is finished, the comprehensive pasting operation is carried out, the paying-off groove 11 is filled with the paste agent along the laying line, the fixing piece 8 and the detection optical cable 2 are completely covered, the paying-off groove 11 is filled, and the drainage work of the pipeline 1 cannot be influenced.
Step S6: the detection optical cable 2 is laid for outgoing line protection, and the fiber core in the detection optical cable 2 is converted into a high-strength armored optical cable at the outgoing line part for protection and leading out, so that the fixing effect of the detection optical cable 2 is improved, and meanwhile, the subsequent optical cable connection is facilitated.
Further, in order to improve the detection effect of the optical fiber cable 2, between the step S4 and the step S5, a step S41 is added: pretension, the direction of laying of installation detection optical cable 2, bottom plate 4 on the sliding base 3 in proper order, pawl 6 and 5 butts of ratchet bar carry on spacingly to bottom plate 4, and the detection optical cable 2 between adjacent mounting 8 is taut, pretensions the operation with detection optical cable 2, can avoid influencing the later stage test effect because detection optical cable 2 relaxes crooked.
Finally, in step S5, step S51 is added, and after the adhesive is completely filled, the electric blower is used to heat the adhesive, so that the detection optical cable 2 and the surface of the pipeline 1 are fully bonded and fixed, the electric blower can accelerate the fixing and forming of the adhesive, the fixing effect of the adhesive is ensured, and the structural strength of the adhesive is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. Underground sewer pipe (1) health detection device includes detection optical cable (2) of laying on pipeline (1) along pipeline (1) length direction, its characterized in that: the detection optical cable (2) is formed by axial sections (21) and annular sections (22) which are distributed at intervals, and a fixing device for fixing the detection optical cable (2) on the pipeline (1) is arranged on the pipeline (1);
the fixing device comprises a plurality of fixing pieces (8) distributed along the length direction of the detection optical cable (2), the fixing pieces (8) are fixedly arranged on the pipeline (1), and the fixing pieces (8) are fixedly connected with the detection optical cable (2);
the fixing piece (8) comprises a base (3) fixed with the pipeline (1), a bottom plate (4) is connected to the base (3) in a sliding mode along the axial direction of the detection optical cable (2), a pressing plate (41) for fixing the detection optical cable (2) on the bottom plate (4) is arranged on the bottom plate (4), and a limiting piece for limiting the bottom plate (4) to perform unidirectional sliding is arranged on the base (3);
the base (3) are gone up and are equipped with T-slot (31) along detection optical cable (2) axial, be equipped with on bottom plate (4) with T-slot (31) cooperation T-shaped piece (42), the locating part is including ratchet (5) that set up along T-shaped piece (42) length direction on T-shaped piece (42) bottom surface, be equipped with on T-shaped piece (31) bottom surface with ratchet (5) complex pawl (6) and drive pawl (6) towards ratchet (5) pivoted shell fragment.
2. Underground sewer piping (1) health detection device according to claim 1, characterized in that: the pipeline (1) is provided with a wire releasing groove (11) used for installing a fixing piece (8) and optical fibers along the distribution direction of the detection optical cable (2), and an adhesive used for filling the wire releasing groove (11) after the installation is finished is arranged in the wire releasing groove (11).
3. Underground sewer piping (1) health detection device according to claim 1 or 2, characterized in that: an operation hole (7) intersected with the pawl (6) is formed in the base (3) along the length direction of the T-shaped groove (31), and the operation hole (7) penetrates through the base (3).
4. A mounting method for mounting a detecting unit according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
step S1: setting a line, namely setting the line on the surface of the pipeline (1) by drawing a line with an ink box, and drawing a preset laying line, wherein the line keeps straight along the axial laying part direction of the pipeline (1), and the line is ensured to be circular along the circumferential laying part direction;
step S2: polishing, namely polishing a wire laying groove (11) with the width of 3-5cm along a line selected by the mark through an electric polishing machine so as to prepare for laying and installing the detection optical cable (2);
step S3: dedusting, namely, adopting dedusting equipment to clean residual ash in the wire discharge groove (11);
step S4: paying off, namely placing the detection optical cable (2) into a paying-off groove (11) along the length of the paying-off groove (11), laying a fixing piece (8) along the length direction of the detection optical cable (2), fixing a base (3) into the paying-off groove (11), installing a bottom plate (4) and the fixing piece (8) outside the detection optical cable (2) and fixing the bottom plate and the fixing piece with the detection optical cable (2), and then inserting a T-shaped block (42) on the bottom plate (4) into a T-shaped groove (31) on the base (3);
step S5: the overall sticking is carried out, along the laying line, the wire laying groove (11) is filled with the adhesive, and the fixing piece (8) and the detection optical cable (2) are completely covered;
step S6: and laying detection optical cables (2) for outgoing line protection, and converting fiber cores in the detection optical cables (2) into high-strength armored optical cables at outgoing line positions for protection and leading out.
5. The mounting method of a detecting device according to claim 4, characterized in that: between step S4 and step S5, step S41 is added: prestretching, installing the arrangement direction of the detection optical cables (2), sequentially sliding the bottom plate (4) on the base (3), limiting the bottom plate (4) by the abutting of the pawl (6) and the ratchet bar (5), and tensioning the detection optical cables (2) between the adjacent fixing pieces (8).
6. The mounting method of the detecting device according to claim 4 or 5, characterized in that: in step S5, step S51 is added, and after the adhesive is filled, the colloid is heated by an electric blower, so that the detection optical cable (2) and the surface of the pipeline (1) are fully bonded and fixed.
7. The mounting method of a detecting device according to claim 4, characterized in that: in the step S1, for the pipeline (1) paved in an open cut mode, the detection optical cable (2) is arranged on the outer wall of the pipeline (1); for the pipeline (1) laid by adopting the undercut mode, the detection optical cable (2) is arranged on the inner wall of the pipeline (1).
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| JP4446142B2 (en) * | 2001-06-12 | 2010-04-07 | 住友電気工業株式会社 | Optical fiber cutting device and cutting method |
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