CN111884130A - Indoor construction method for railway signal - Google Patents
Indoor construction method for railway signal Download PDFInfo
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- CN111884130A CN111884130A CN202010673147.2A CN202010673147A CN111884130A CN 111884130 A CN111884130 A CN 111884130A CN 202010673147 A CN202010673147 A CN 202010673147A CN 111884130 A CN111884130 A CN 111884130A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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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
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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Abstract
The invention belongs to the technical field of railway signal construction, and provides a railway signal indoor process lifting construction method for solving the technical problems of serious crossing of various cables, disordered construction procedures, long construction period and low working efficiency in the conventional railway signal indoor construction, which comprises the following steps: step 1, indoor cabinet layout, step 2, planning cable walking direction, drawing a cable walking direction construction path diagram, step 3, installing a cable support, step 4, indoor cable arrangement and fixation, step 5, arranging factory wiring and arranging a computer room to a control console cable, step 6, installing a cable wiring rack, step 7, cable introduction, step 8, primary end forming and cable fixation, step 9, secondary end forming and cable fixation, step 10, connecting a cable with a lightning protection junction box, step 11, lightning protection and grounding of indoor equipment, step 12, laying indoor copper foil, step 13, electrostatic floor laying and indoor identification. The invention improves the construction efficiency and saves the construction cost.
Description
Technical Field
The invention belongs to the technical field of railway signals, and particularly relates to an indoor construction method for railway signals.
Background
The railway signal is one of the important specialties of the high-speed railway, and has the functions of organizing and commanding the train to run, effectively improving the railway transportation efficiency and transmitting the running information. Modern railway transportation develops towards high speed, high density and heavy load, and a signal system also develops towards modernization technologies such as computer technology, network technology, communication technology and the like.
Because in traditional railway construction, the railway construction standard is not high, and the technical merit is limited, and thought recognition is not in place, causes in the past railway signal indoor construction only to focus on final result, and each system circuit is unobstructed promptly, equipment operation can normally, do not pay attention to indoor holistic construction quality and technology, lead to the circuit to open the back, the indoor circuit trouble frequently takes place, and after breaking down because indoor cable laying chaos unordered leads to the trouble can not in time accurate finding, and then leads to the train operation late point, endangers the safety of train operation even.
In the traditional construction, because of no unified construction standardization requirement, the construction process is disordered, so that the construction efficiency is extremely low, and the construction nodes cannot be timely redeemed.
Disclosure of Invention
The invention provides an indoor construction method for railway signals, aiming at solving the technical problems of low quality process, low operation efficiency and long construction period of the existing indoor construction of railway signals.
The invention adopts the following technical scheme: a railway signal indoor construction method comprises the following steps,
s100, arranging indoor cabinets;
s200, planning the direction of a cable, and drawing a construction path diagram of the direction of the cable; drawing trend diagrams of all cables according to a design drawing according to a finally determined indoor rack layout diagram, and avoiding crossing;
s300, installing a cable bracket;
s400, arranging and fixing indoor cables;
s500, arranging wiring of a factory, and arranging a computer room to a console cable; arranging outgoing wiring in the combined cabinet, and arranging and binding internal wiring on the back of the cabinet according to an outlet wire of one combined hole in the transverse groove; the flame-retardant phi 100 PVC pipe is used for protection and then is laid on a control console of a running room;
s600, installing a cable routing frame; the width of the cabling rack is set according to the width of 5cm of each cable, and the cabling rack is led to the lightning protection branching chamber along the cable chamber;
s700, introducing a cable;
s800, primary terminating and cable fixing;
s900, secondary forming and cable fixing;
s1000, connecting a cable with the lightning protection junction cabinet;
s1100, lightning protection and grounding of indoor equipment;
s1200, laying an indoor copper foil; the indoor copper foil is laid along the supporting legs of the electrostatic floor and fixed on the ground to form a shielding grid which is the same as the grid of the electrostatic floor, the shielding grid is welded at each intersection point by adopting soldering tin, and after the laying is finished, the copper foil is connected with the reserved grounding flat steel at two corners of the house;
s1300, laying the electrostatic floor, marking the indoor, cleaning the indoor sanitation before laying the electrostatic floor, when laying the electrostatic floor, completely adopting transparent glass at all the places where wires are laid, then making the marks of the wires laid, adhering the marks to the inside of the electrostatic floor, and after laying the floor, starting adhering various marks of the indoor cabinet.
The step S100 described above employs the following method,
s101, dividing the layout of indoor cabinets according to the system function according to the house layout of a computer room, a power supply screen room, a lightning protection junction room and a relay room, wherein when all cabinets are installed, bases are insulated and isolated from the cabinets by using 5mm of electric insulation rubber plates, and all upper wiring grooves in the relay room, and the wiring grooves and the bases need to be insulated;
s102, when the cabinets in the relay room are distributed, the frequency shift cabinet is distributed close to a power supply screen;
s103, when the monitoring combination cabinets in the relay room are assembled, the monitoring combination cabinets are arranged between other combination cabinets and the lightning protection junction room;
s104, arranging an interface cabinet in the relay room at a position close to the computer room;
s105, the power supply screen room separates power supply screens for supplying power to different cabinets according to the layout of the computer room and the relay room, and power supply line crossing is avoided;
s106, arranging the lightning protection junction boxes according to the sequence of the sectional cable end forming cabinet, the sectional comprehensive cabinet and the lightning protection junction disk; the computer indoor interlocking system is arranged from left to right according to the modes of a power supply cabinet, an interlocking cabinet and a monitoring cabinet; the train control system is arranged from left to right according to the modes of the track circuit interface monitoring cabinet, the train control main cabinet and the LEU cabinet; the CTC system is arranged in left-to-right order; other gap monitoring cabinets and microcomputer monitoring cabinets are arranged according to the change of the house layout;
s107, marking the square lines paved on the electrostatic floor on the ground in advance, and avoiding the frame lines paved on the electrostatic floor when the cabinet is installed.
Step S300, the following method is adopted, after the cable construction path diagram is completed, the installation of the upper and ground aluminum alloy cabling racks is started according to the path diagram, and the following main points are required during the installation of the cabling racks: firstly, the path for installing the cabling rack must be in the middle of the electrostatic floor, and the cabling rack cannot cross the positions of two floors under the worst condition; secondly, the distances between the cross braces of the lower wiring rack for fixing the cables are all set to be 30cm, and the distances between the cross braces at all corners are set to be 20 cm; thirdly, the lower routing frame is required to be completely introduced into the bottom of the rack; fourthly, the distance between the cross braces for fixing the cables by the upper cabling rack is set to be 30cm, and the cross braces are not required to be arranged at the cross points of all the top trunking; fifthly, arranging a cross brace at the position 5cm away from the down-leading hole at the top of the cabinet so as to lead the cable down; sixthly, the cabling racks are arranged according to the principle of horizontal and vertical.
Step S700, adopting the following method, wherein the cable lead-in port is directly opposite to a two-layer lead-out port between the cables; when the cable is introduced, the 2000 track circuit digital cable is separately required to enter an interval comprehensive cabinet, all turnout cables, signal cables and 25-week track circuit cables in a station yard are introduced into an indoor lightning protection junction cabinet, and the 2000 track circuit cable and other cables are separated at an introduction port; and then according to the specification of the cable, the cable is laid from thick to thin from left to right, and when the cable is introduced into the room, the cable is tightly blocked at an indoor introduction port by adopting fireproof and ratproof materials.
Step S800 adopts the following method, when a cable is led into a room, when the distance between an inlet and a branching cabinet is more than 5 meters, a cable steel belt is disconnected at a position 1.5 meters away from the electrostatic floor in the cable room, an aluminum sheath cannot be disconnected, the cable steel belt and the aluminum sheath are grounded, a mesh SMC composite material insulating joint is used as an insulating joint in a grounding mode, after grounding is completed, the insulating joint is fully filled with sealant, and an external lead-out ground wire is led out to a cable grounding busbar by adopting a 3 x 30 copper plate.
Step S900 adopts the following method, the secondary cable component ends are two component ends of the cable leading in the lightning protection distribution panel and the cable leading in the interval comprehensive cabinet: cables led into the interval comprehensive cabinet are fixed in a special cable terminating cabinet, the width of the cable terminating cabinet is considered according to the width of 5cm of each lead-in cable, the height of the cable terminating cabinet is consistent with the height of the interval comprehensive cabinet and the height of the distribution board, and the lead-in cables can be led in along two sides of the terminating cabinet, namely the front side and the back side are led up and fixed. The height of the cable terminating insulation section is 1500mm away from the electrostatic floor, and the insulation section adopts a secondary terminating insulation section; secondly, the end of the cable leading into the lightning protection distribution board is preferably arranged on the ground, the end of the cable is arranged at the nearest part of the leading-in opening of the lightning protection distribution board, and if a plurality of layers of cables exist, the plurality of layers of cables are arranged into an end insulation section for the second time according to the distance of 10cm backwards of each layer.
The following method is adopted in the step S1000,
s1001, after the secondary cable end forming process is completed, a cable connected into the interval comprehensive cabinet completely cuts off a cable steel belt and an aluminum sheath at a secondary end forming insulation joint, an inner cable protection layer is exposed, a flame-retardant soft cowhells water pipe protection cable is sleeved on the outer cable protection layer and is protected to a wiring terminal of the interval comprehensive cabinet, then the inner cable protection layer is completely pulled off, a cable core wire is exposed, the core wire is connected to a corresponding terminal according to a design drawing, and a spare core wire coil is placed in a wiring groove;
s1002, disconnecting a cable steel belt and an aluminum sheath at an inlet of a lightning protection distribution cabinet for a cable connected into the lightning protection distribution cabinet, exposing an inner protective layer of the cable, sleeving a flame-retardant cowhells water pipe protective cable on the inner protective layer, protecting the cable until the cable is led to the inlet at the bottom of the lightning protection distribution cabinet, then completely pulling the inner protective layer of the cable away, exposing a cable core wire, binding all the led cables into a circular shape, leading out the cables to a corresponding designed cable groove, connecting the cables to a designed terminal position, and completely winding all spare cable core wires into a circular shape by utilizing a cylindrical mold to be reserved at the bottom of the lightning protection distribution cabinet.
The following method is adopted in the step S1100,
s1101, arranging copper bars with the size of 30mm multiplied by 3mm at a position 100mm away from the front of each row of cabinets as a ground collection line of each cabinet, fixing the copper bars on the ground, and keeping insulation with the ground by adopting insulating bolts and 5mm of electric insulating rubber plates; each cabinet shell and each base are connected with a copper bar arranged in front of the cabinet by a 10mm grounding wire independently, and the grounding wire is protected by an insulating sleeve;
s1102-grounding the cabinet shell and the base of each room in a single-point redundancy mode, and guiding the grounding wires of 50mm to the grounding bus bars independently;
the lightning protection grounding terminal of the S1103-lightning protection power box adopts 2 x 25mm grounding copper wires to be led out to a separately-arranged 3 x 30 grounding copper bar on the ground, and then adopts 50mm grounding wire to be led out to an indoor separately-reserved grounding bus bar;
s1104, independently setting grounding busbars on all cables, communication boards and communication modules in a computer room, and independently leading the grounding busbars to the grounding busbars by adopting 50mm grounding wires;
s1105-the grounding terminal led out by the lightning protection module on the lightning protection junction box adopts a 50mm grounding wire to be led out to a grounding busbar alone;
s1106, leading out two 3X 30 copper bars to an independently arranged 3X 30 bus bar by using a secondary cable forming end of the interval comprehensive cabinet and a secondary cable forming end of the lightning protection distribution panel respectively, and connecting the bus bar to an independently arranged cable shielding grounding bus bar;
the cable shielding layer on the S1107-interval comprehensive cabinet is connected to the DLE lightning protection terminal strip on the comprehensive cabinet bus bar, and then the lightning protection terminal strip is connected to the grounding bus bar of the cable by adopting a 50mm grounding wire.
Compared with the prior art, the invention has the following advantages:
1. the indoor cable adopts the distribution cable laying technology, the cable has increased a layer of protective sheath outside original oversheath again, and single core wire has become the multicore line, has increased the cable quality life-span, has strengthened the reliability of indoor circuit.
2. Through reasonable planning cable trend, will walk the line power cord and lay the route and separate with other cables, the ground cable is to rack top climbing and rack top cable lay the good route of planning in advance to ground, avoids alternately, guarantees signal transmission safety.
3. The finished end of the cable adopts an SMC composite material insulation joint, the copper bar is led out for grounding to replace the traditional flame-retardant grounding wire, the leakage distance is shortened, the leakage speed is high, and the use safety of the cable is improved.
4. The procedures of assembling the indoor cabinet, laying cables, leading in cables, terminating and the like are solidified, the procedures are closely connected, the whole construction time is reduced, and the construction period is shortened.
5. All cables are laid in a mode of adding layers by using the wire fixing device, the quality is reliable, and the direction guiding boards of each layer and each cable are convenient to inspect and maintain.
In a word, the signal indoor process improving construction method improves the quality life of the cable and improves the safety of indoor signal transmission; the grounding performance of the cable is improved by improving the quality of the traditional cable terminating material and the construction process; the power line and other cables are separately arranged by researching the layout, so that the safety of the indoor signal transmission cable is ensured; the indoor cable is integrally constructed in a mode of separately laying the upper part and the lower part in a layered mode, and the integral process quality of indoor engineering is improved. The method has important significance for the requirement of creating competitive products on the whole railway four-electric engineering, and has remarkable social and economic benefits.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
A railway signal indoor construction method comprises the following steps,
s100, arranging indoor cabinets;
the following method is adopted in the step S100,
s101, dividing the layout of indoor cabinets according to the system function according to the house layout of a computer room, a power supply screen room, a lightning protection junction room and a relay room, wherein when all cabinets are installed, bases are insulated and isolated from the cabinets by using 5mm of electric insulation rubber plates, and all upper wiring grooves in the relay room, and the wiring grooves and the bases need to be insulated;
s102, when the cabinets in the relay room are distributed, the frequency shift cabinet is distributed close to a power supply screen;
s103, when the monitoring combination cabinets in the relay room are assembled, the monitoring combination cabinets are arranged between other combination cabinets and the lightning protection junction room;
s104, arranging an interface cabinet in the relay room at a position close to the computer room;
s105, the power supply screen room separates power supply screens for supplying power to different cabinets according to the layout of the computer room and the relay room, and power supply line crossing is avoided;
s106, arranging the lightning protection junction boxes according to the sequence of the sectional cable end forming cabinet, the sectional comprehensive cabinet and the lightning protection junction disk; the computer indoor interlocking system is arranged from left to right according to the modes of a power supply cabinet, an interlocking cabinet and a monitoring cabinet; the train control system is arranged from left to right according to the modes of the track circuit interface monitoring cabinet, the train control main cabinet and the LEU cabinet; the CTC system is arranged in left-to-right order; other gap monitoring cabinets and microcomputer monitoring cabinets are arranged according to the change of the house layout;
s107, marking the square lines paved on the electrostatic floor on the ground in advance, and avoiding the frame lines paved on the electrostatic floor when the cabinet is installed.
S200, planning the direction of a cable, and drawing a construction path diagram of the direction of the cable; drawing trend diagrams of all cables according to a design drawing according to a finally determined indoor rack layout diagram, and avoiding crossing;
s300, installing a cable bracket; step S300, the following method is adopted, after the cable construction path diagram is completed, the installation of the upper and ground aluminum alloy cabling racks is started according to the path diagram, and the following main points are required during the installation of the cabling racks: firstly, the path for installing the cabling rack must be in the middle of the electrostatic floor, and the cabling rack cannot cross the positions of two floors under the worst condition; secondly, the distances between the cross braces of the lower wiring rack for fixing the cables are all set to be 30cm, and the distances between the cross braces at all corners are set to be 20 cm; thirdly, the lower routing frame is required to be completely introduced into the bottom of the rack; fourthly, the distance between the cross braces for fixing the cables by the upper cabling rack is set to be 30cm, and the cross braces are not required to be arranged at the cross points of all the top trunking; fifthly, arranging a cross brace at the position 5cm away from the down-leading hole at the top of the cabinet so as to lead the cable down; sixthly, the cabling racks are arranged according to the principle of horizontal and vertical.
S400, arranging and fixing indoor cables. Indoor cable laying principle: all indoor external cables are distinguished by different colors according to purposes, blue is used for the overhead cables, green is used for the inter-frame cables, red is used for the combination cabinet to branch panel cables, yellow is used for the interface cabinet to external cables, purple is used for all monitoring cables, according to the requirements of construction technology, indoor partial cables need to be changed into customized outer sheath cables, 5 x 23 x 0.15mm single-core cables (except shielding cables) are adopted as cables with outer sheaths, and 4 x 2 x 0.75mm outer sheath cables are adopted as leakage current monitoring cables from the monitoring combination cabinet to a power supply screen. Cabling and fixing is started according to the above principle.
S500, arranging wiring of a factory, and arranging a computer room to a console cable; arranging outgoing wiring in the combined cabinet, and arranging and binding internal wiring on the back of the cabinet according to an outlet wire of one combined hole in the transverse groove; and the flame-retardant PVC pipe with the diameter of 100 is used for protection and then is laid on a control console of a running room.
S600, installing a cable routing frame; the width of the cabling rack is set according to the width of 5cm of each cable, and the cabling rack is led to the lightning protection branching room along the cable room.
S700, introducing a cable; step S700, adopting the following method, wherein the cable lead-in port is directly opposite to a two-layer lead-out port between the cables; when the cable is introduced, the 2000 track circuit digital cable is separately required to enter an interval comprehensive cabinet, all turnout cables, signal cables and 25-week track circuit cables in a station yard are introduced into an indoor lightning protection junction cabinet, and the 2000 track circuit cable and other cables are separated at an introduction port; and then according to the specification of the cable, the cable is laid from thick to thin from left to right, and when the cable is introduced into the room, the cable is tightly blocked at an indoor introduction port by adopting fireproof and ratproof materials.
S800, primary terminating and cable fixing; step S800 adopts the following method, when a cable is led into a room, when the distance between an inlet and a branching cabinet is more than 5 meters, a cable steel belt is disconnected at a position 1.5 meters away from the electrostatic floor in the cable room, an aluminum sheath cannot be disconnected, the cable steel belt and the aluminum sheath are grounded, a mesh SMC composite material insulating joint is used as an insulating joint in a grounding mode, after grounding is completed, the insulating joint is fully filled with sealant, and an external lead-out ground wire is led out to a cable grounding busbar by adopting a 3 x 30 copper plate.
S900, secondary forming and cable fixing; step S900 adopts the following method, the secondary cable component ends are two component ends of the cable leading in the lightning protection distribution panel and the cable leading in the interval comprehensive cabinet: cables led into the interval comprehensive cabinet are fixed in a special cable terminating cabinet, the width of the cable terminating cabinet is considered according to the width of 5cm of each lead-in cable, the height of the cable terminating cabinet is consistent with the height of the interval comprehensive cabinet and the height of the distribution board, and the lead-in cables can be led in along two sides of the terminating cabinet, namely the front side and the back side are led up and fixed. The height of the cable terminating insulation section is 1500mm away from the electrostatic floor, and the insulation section adopts a secondary terminating insulation section; secondly, the end of the cable leading into the lightning protection distribution board is preferably arranged on the ground, the end of the cable is arranged at the nearest part of the leading-in opening of the lightning protection distribution board, and if a plurality of layers of cables exist, the plurality of layers of cables are arranged into an end insulation section for the second time according to the distance of 10cm backwards of each layer.
S1000, connecting a cable with the lightning protection junction cabinet;
the following method is adopted in the step S1000,
s1001, after the secondary cable end forming process is completed, a cable connected into the interval comprehensive cabinet completely cuts off a cable steel belt and an aluminum sheath at a secondary end forming insulation joint, an inner cable protection layer is exposed, a flame-retardant soft cowhells water pipe protection cable is sleeved on the outer cable protection layer and is protected to a wiring terminal of the interval comprehensive cabinet, then the inner cable protection layer is completely pulled off, a cable core wire is exposed, the core wire is connected to a corresponding terminal according to a design drawing, and a spare core wire coil is placed in a wiring groove;
s1002, disconnecting a cable steel belt and an aluminum sheath at an inlet of a lightning protection distribution cabinet for a cable connected into the lightning protection distribution cabinet, exposing an inner protective layer of the cable, sleeving a flame-retardant cowhells water pipe protective cable on the inner protective layer, protecting the cable until the cable is led to the inlet at the bottom of the lightning protection distribution cabinet, then completely pulling the inner protective layer of the cable away, exposing a cable core wire, binding all the led cables into a circular shape, leading out the cables to a corresponding designed cable groove, connecting the cables to a designed terminal position, and completely winding all spare cable core wires into a circular shape by utilizing a cylindrical mold to be reserved at the bottom of the lightning protection distribution cabinet.
S1100, lightning protection and grounding of indoor equipment;
the following method is adopted in the step S1100,
s1101, arranging copper bars with the size of 30mm multiplied by 3mm at a position 100mm away from the front of each row of cabinets as a ground collection line of each cabinet, fixing the copper bars on the ground, and keeping insulation with the ground by adopting insulating bolts and 5mm of electric insulating rubber plates; each cabinet shell and each base are connected with a copper bar arranged in front of the cabinet by a 10mm grounding wire independently, and the grounding wire is protected by an insulating sleeve;
s1102-grounding the cabinet shell and the base of each room in a single-point redundancy mode, and guiding the grounding wires of 50mm to the grounding bus bars independently;
the lightning protection grounding terminal of the S1103-lightning protection power box adopts 2 x 25mm grounding copper wires to be led out to a separately-arranged 3 x 30 grounding copper bar on the ground, and then adopts 50mm grounding wire to be led out to an indoor separately-reserved grounding bus bar;
s1104, independently setting grounding busbars on all cables, communication boards and communication modules in a computer room, and independently leading the grounding busbars to the grounding busbars by adopting 50mm grounding wires;
s1105-the grounding terminal led out by the lightning protection module on the lightning protection junction box adopts a 50mm grounding wire to be led out to a grounding busbar alone;
s1106, leading out two 3X 30 copper bars to an independently arranged 3X 30 bus bar by using a secondary cable forming end of the interval comprehensive cabinet and a secondary cable forming end of the lightning protection distribution panel respectively, and connecting the bus bar to an independently arranged cable shielding grounding bus bar;
the cable shielding layer on the S1107-interval comprehensive cabinet is connected to the DLE lightning protection terminal strip on the comprehensive cabinet bus bar, and then the lightning protection terminal strip is connected to the grounding bus bar of the cable by adopting a 50mm grounding wire.
S1200, laying an indoor copper foil; the indoor copper foil is laid along the supporting legs of the electrostatic floor and fixed on the ground to form a shielding grid which is the same as the grid of the electrostatic floor, the shielding grid is welded at each intersection point by adopting soldering tin, and after the laying is finished, the copper foil is connected with the reserved grounding flat steel at two corners of the house.
S1300, laying the electrostatic floor, marking the indoor, cleaning the indoor sanitation before laying the electrostatic floor, when laying the electrostatic floor, completely adopting transparent glass at all the places where wires are laid, then making the marks of the wires laid, adhering the marks to the inside of the electrostatic floor, and after laying the floor, starting adhering various marks of the indoor cabinet.
Engineering examples
The method is applied to railway signal indoor construction from Uolanzi cloth special for Zhang visitor to Zhang family section, and the section comprises indoor signal wiring construction of three stations of Uolanzi cloth, Xing and North and Huaian stations. The construction is started in 2016, 11 and 10 days, and the engineering construction is completed in 2018, 12 and 20 days. In the signal engineering of the Wulanscomb station, the construction difficulty of cable laying, cable terminating and wiring processes is increased in winter construction. By adopting the method for construction, the cable with the flame-retardant outer sheath and the cable forming end insulating section are subjected to the examination in severe cold winter, the cable is arranged orderly and moves clearly, the signal transmission is ensured to be safe and reliable, and convenience is provided for operation and maintenance. And then, signal construction of the Xinhe north station and the Huaian station is smoothly finished, so that the project effectively improves the construction operation efficiency and the whole construction quality and process.
The Changchao Wulan cloth station is opened in 2017 for 8 months, and the Wulan cloth is opened in 2019 for 12 months, during which the signal engineering passes static acceptance, dynamic acceptance and safety evaluation of an expert group of a railway head office, the physical engineering is qualified in one-time acceptance, and no fault occurs in a signal system and a circuit when the station operates to the present.
The high recognition of the expensive railway bureau and the general iron expert group is obtained in the static and dynamic acceptance check process, the construction process quality meets the requirement of fine engineering, and the unit engineering acceptance check is passed once, so that the method is worthy of being popularized on the whole line.
In 12 months in 2019, the whole line is called to be opened for operation, no circuit fault occurs in the current signal engineering, and the safe operation of the line is comprehensively guaranteed.
The Yaan station signal indoor engineering is started for construction in 2018, 5 and 20 days, and finished in 2018, 6 and 20 days, the signal indoor technology is adopted to promote the construction method, and the indoor technology quality is formed and excellent at one time through the close connection of all the working procedures, so that the entity engineering is completed at one time. Through the inspection, static acceptance, dynamic acceptance and safety evaluation of the Chengdu railway group and the Chengdu electric service section, the engineering quality is all qualified at one time, the operation is smoothly started in 12 months in 2018, so that a lightning stroke accident does not occur at the finished end of a cable, and no circuit fault or cable disconnection occurs indoors, thereby obtaining the consistent good comment of an equipment management unit.
Claims (9)
1. A railway signal indoor construction method is characterized in that: comprises the following steps of (a) carrying out,
s100, arranging indoor cabinets;
s200, planning the direction of a cable, and drawing a construction path diagram of the direction of the cable; drawing trend diagrams of all cables according to a design drawing according to a finally determined indoor rack layout diagram, and avoiding crossing;
s300, installing a cable bracket;
s400, arranging and fixing indoor cables;
s500, arranging wiring of a factory, and arranging a computer room to a console cable; arranging outgoing wiring in the combined cabinet, and arranging and binding internal wiring on the back of the cabinet according to an outlet wire of one combined hole in the transverse groove; the flame-retardant phi 100 PVC pipe is used for protection and then is laid on a control console of a running room;
s600, installing a cable routing frame; the width of the cabling rack is set according to the width of 5cm of each cable, and the cabling rack is led to the lightning protection branching chamber along the cable chamber;
s700, introducing a cable;
s800, primary terminating and cable fixing;
s900, secondary forming and cable fixing;
s1000, connecting a cable with the lightning protection junction cabinet;
s1100, lightning protection and grounding of indoor equipment;
s1200, laying an indoor copper foil; the indoor copper foil is laid along the supporting legs of the electrostatic floor and fixed on the ground to form a shielding grid which is the same as the grid of the electrostatic floor, the shielding grid is welded at each intersection point by adopting soldering tin, and after the laying is finished, the copper foil is connected with the reserved grounding flat steel at two corners of the house;
s1300, laying the electrostatic floor, marking the indoor, cleaning the indoor sanitation before laying the electrostatic floor, when laying the electrostatic floor, completely adopting transparent glass at all the places where wires are laid, then making the marks of the wires laid, adhering the marks to the inside of the electrostatic floor, and after laying the floor, starting adhering various marks of the indoor cabinet.
2. The indoor railway signal construction method according to claim 1, wherein: the step S100 described adopts the following principle,
s101, dividing the layout of indoor cabinets according to the system function according to the house layout of a computer room, a power supply screen room, a lightning protection junction room and a relay room, wherein when all cabinets are installed, bases are insulated and isolated from the cabinets by using 5mm of electric insulation rubber plates, and all upper wiring grooves in the relay room, and the wiring grooves and the bases need to be insulated;
s102, when the cabinets in the relay room are distributed, the frequency shift cabinet is distributed close to a power supply screen;
s103, when the monitoring combination cabinets in the relay room are assembled, the monitoring combination cabinets are arranged between other combination cabinets and the lightning protection junction room;
s104, arranging an interface cabinet in the relay room at a position close to the computer room;
s105, the power supply screen room separates power supply screens for supplying power to different cabinets according to the layout of the computer room and the relay room, and power supply line crossing is avoided;
s106, arranging the lightning protection junction boxes according to the sequence of the sectional cable end forming cabinet, the sectional comprehensive cabinet and the lightning protection junction disk; the computer indoor interlocking system is arranged from left to right according to the modes of a power supply cabinet, an interlocking cabinet and a monitoring cabinet; the train control system is arranged from left to right according to the modes of the track circuit interface monitoring cabinet, the train control main cabinet and the LEU cabinet; the CTC system is arranged in left-to-right order; other gap monitoring cabinets and microcomputer monitoring cabinets are arranged according to the change of the house layout;
s107, marking the square lines paved on the electrostatic floor on the ground in advance, and avoiding the frame lines paved on the electrostatic floor when the cabinet is installed.
3. The indoor railway signal construction method according to claim 2, wherein: the step S300 adopts the following method, after the cable construction path diagram is completed, the upper and ground aluminum alloy cabling racks are installed according to the path diagram, and the following points are noticed during the cabling rack installation: firstly, the path for installing the cabling rack must be in the middle of the electrostatic floor, and the cabling rack cannot cross the positions of two floors under the worst condition; secondly, the distances between the cross braces of the lower wiring rack for fixing the cables are all set to be 30cm, and the distances between the cross braces at all corners are set to be 20 cm; thirdly, the lower routing frame is required to be completely introduced into the bottom of the rack; fourthly, the distance between the cross braces for fixing the cables by the upper cabling rack is set to be 30cm, and the cross braces are not required to be arranged at the cross points of all the top trunking; fifthly, arranging a cross brace at the position 5cm away from the down-leading hole at the top of the cabinet so as to lead the cable down; sixthly, the cabling racks are arranged according to the principle of horizontal and vertical.
4. The indoor railway signal construction method according to claim 3, wherein: in the step S700, the cable inlet faces the two-layer outlet between the cables; when the cable is introduced, the 2000 track circuit digital cable is separately required to enter an interval comprehensive cabinet, all turnout cables, signal cables and 25-week track circuit cables in a station yard are introduced into an indoor lightning protection junction cabinet, and the 2000 track circuit cable and other cables are separated at an introduction port; and then according to the specification of the cable, the cable is laid from thick to thin from left to right, and when the cable is introduced into the room, the cable is tightly blocked at an indoor introduction port by adopting fireproof and ratproof materials.
5. The indoor railway signal construction method according to claim 4, wherein: the step S800 adopts the following method, when a cable is led into a room and the distance between an inlet and a branching cabinet is more than 5 meters, a cable steel belt is disconnected at a position 1.5 meters away from an electrostatic floor in the cable room, an aluminum sheath cannot be disconnected, the cable steel belt and the aluminum sheath are grounded, a mesh SMC composite material insulating joint is used as an insulating joint in a grounding mode, after grounding is completed, the insulating joint is fully filled with sealant, and an external lead-out ground wire is led out to a cable grounding busbar by adopting a 3 x 30 copper plate.
6. The indoor railway signal construction method according to claim 5, wherein: the step S900 adopts the following method, and the secondary cable component ends are two component ends of a cable leading into the lightning protection distribution board and a cable leading into the interval comprehensive cabinet: cables led into the interval comprehensive cabinet are fixed in a special cable terminating cabinet, the width of the cable terminating cabinet is considered according to the width of 5cm of each lead-in cable, the height of the cable terminating cabinet is consistent with the height of the interval comprehensive cabinet and the height of the distribution board, and the lead-in cables can be led in along two sides of the terminating cabinet, namely the front side and the back side are led up and fixed.
7. The height of the cable terminating insulation section is 1500mm away from the electrostatic floor, and the insulation section adopts a secondary terminating insulation section; secondly, the end of the cable leading into the lightning protection distribution board is preferably arranged on the ground, the end of the cable is arranged at the nearest part of the leading-in opening of the lightning protection distribution board, and if a plurality of layers of cables exist, the plurality of layers of cables are arranged into an end insulation section for the second time according to the distance of 10cm backwards of each layer.
8. The indoor railway signal construction method according to claim 6, wherein: the step S1000 adopts the following method,
s1001, after the secondary cable end forming process is completed, a cable connected into the interval comprehensive cabinet completely cuts off a cable steel belt and an aluminum sheath at a secondary end forming insulation joint, an inner cable protection layer is exposed, a flame-retardant soft cowhells water pipe protection cable is sleeved on the outer cable protection layer and is protected to a wiring terminal of the interval comprehensive cabinet, then the inner cable protection layer is completely pulled off, a cable core wire is exposed, the core wire is connected to a corresponding terminal according to a design drawing, and a spare core wire coil is placed in a wiring groove;
s1002, disconnecting a cable steel belt and an aluminum sheath at an inlet of a lightning protection distribution cabinet for a cable connected into the lightning protection distribution cabinet, exposing an inner protective layer of the cable, sleeving a flame-retardant cowhells water pipe protective cable on the inner protective layer, protecting the cable until the cable is led to the inlet at the bottom of the lightning protection distribution cabinet, then completely pulling the inner protective layer of the cable away, exposing a cable core wire, binding all the led cables into a circular shape, leading out the cables to a corresponding designed cable groove, connecting the cables to a designed terminal position, and completely winding all spare cable core wires into a circular shape by utilizing a cylindrical mold to be reserved at the bottom of the lightning protection distribution cabinet.
9. The indoor railway signal construction method according to claim 7, wherein: the step S1100 adopts the following method,
s1101, arranging copper bars with the size of 30mm multiplied by 3mm at a position 100mm away from the front of each row of cabinets as a ground collection line of each cabinet, fixing the copper bars on the ground, and keeping insulation with the ground by adopting insulating bolts and 5mm of electric insulating rubber plates; each cabinet shell and each base are connected with a copper bar arranged in front of the cabinet by a 10mm grounding wire independently, and the grounding wire is protected by an insulating sleeve;
s1102-grounding the cabinet shell and the base of each room in a single-point redundancy mode, and guiding the grounding wires of 50mm to the grounding bus bars independently;
the lightning protection grounding terminal of the S1103-lightning protection power box adopts 2 x 25mm grounding copper wires to be led out to a separately-arranged 3 x 30 grounding copper bar on the ground, and then adopts 50mm grounding wire to be led out to an indoor separately-reserved grounding bus bar;
s1104, independently setting grounding busbars on all cables, communication boards and communication modules in a computer room, and independently leading the grounding busbars to the grounding busbars by adopting 50mm grounding wires;
s1105-the grounding terminal led out by the lightning protection module on the lightning protection junction box adopts a 50mm grounding wire to be led out to a grounding busbar alone;
s1106, leading out two 3X 30 copper bars to an independently arranged 3X 30 bus bar by using a secondary cable forming end of the interval comprehensive cabinet and a secondary cable forming end of the lightning protection distribution panel respectively, and connecting the bus bar to an independently arranged cable shielding grounding bus bar;
the cable shielding layer on the S1107-interval comprehensive cabinet is connected to the DLE lightning protection terminal strip on the comprehensive cabinet bus bar, and then the lightning protection terminal strip is connected to the grounding bus bar of the cable by adopting a 50mm grounding wire.
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