CN110971147B - Construction method of static variable-frequency starting system of large-sized camera set - Google Patents
Construction method of static variable-frequency starting system of large-sized camera set Download PDFInfo
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- CN110971147B CN110971147B CN201911243536.5A CN201911243536A CN110971147B CN 110971147 B CN110971147 B CN 110971147B CN 201911243536 A CN201911243536 A CN 201911243536A CN 110971147 B CN110971147 B CN 110971147B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
- H02P1/52—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor by progressive increase of frequency of supply to motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a construction method of a static variable frequency starting system of a large-sized camera unit, which comprises the following steps: 1) preparing tools required by construction, 2) checking equipment, 3) installing SFC equipment foundation channel steel, 4) installing an SFC control panel cabinet, 5) installing an SFC system matched isolation transformer cabinet, 6) installing an SFC isolation switch cabinet, 7) laying a 6KV high-voltage cable, 8) manufacturing a 6KV high-voltage cable head, 9) controlling cable laying and wiring, and 10) cleaning a site. The invention provides a complete and detailed construction scheme, and the construction method is used for installing and constructing the SFC of the exchange camera, so that the construction quality is ensured, the whole construction period is shortened, and the normal operation of a power grid is facilitated.
Description
1. Technical field:
the invention relates to a mounting construction method of a variable frequency starting system of a camera, in particular to a construction method of a static variable frequency starting system of a large-sized camera unit, belonging to the field of variable frequency starting of large-sized synchronous units
2. The background technology is as follows:
with the development of national power grid science and technology, the operation of a power grid is stabilized, and the additional installation of a camera becomes a trend; SFC system (NES-5900 static frequency conversion starting system) is used for starting frequency conversion of the modulating camera, and is suitable for the frequency conversion starting field of large synchronous machine sets, such as large modulating camera set, large pumped storage set, large gas turbine set, etc.; because the phase modulation SFC system is composed of a plurality of modules, the whole construction period is long and the construction difficulty is high, a complete installation and construction scheme is needed urgently at present, and the modules can be assembled in sequence in a short time.
3. The invention comprises the following steps:
the technical problems to be solved by the invention are as follows: the construction method for the static variable frequency starting system of the large-scale camera unit can be used for rapidly assembling the SFC system of the camera unit, so that the overall construction quality is ensured, the construction period is short, and the popularization is easy.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a construction method of a static variable frequency starting system of a large-scale camera unit comprises the following steps:
preparation:
1) Preparing tools required by construction;
2) Inspection of the device:
(1) after SFC system equipment is transported to the site, the SFC system equipment is stored in a place which is dry, ventilated, far away from damp and contains corrosive gas, and the SFC system equipment is unpacked at the first time to check whether collision damage phenomenon occurs due to transportation and other reasons or not, and the number of parts is checked;
(2) after checking and accepting scattered parts and standard parts, especially copper bus and cable, the scattered parts and standard parts should be transported to a special safe deposit box immediately to prevent the scattered parts and standard parts from being wetted, corroded, damaged and lost due to the fact that the scattered parts and standard parts are stored in an open warehouse;
the operation steps are as follows:
1) Installation of SFC equipment foundation channel steel
(1) The blanking of the basic channel steel is corrected firstly, cutting is carried out according to the design length, and when the cutting machine is used for blanking, the cutting machine is corrected firstly so as to ensure that the cut surface of the channel steel is flat;
(2) when the foundation channel steel is buried, the foundation channel steel is arranged at intervals according to the design, and is buried according to the design size; when laying, firstly finding out the elevation of the civil engineering, and after the foundation is installed, setting the top of the foundation to be 5-10mm higher than the trowelling ground according to the design; spot welding is firstly carried out on a sizing block leveling foundation, after the size is checked, the sizing block leveling foundation is firmly welded with the embedded iron, and the two sections of disc foundations with bus bridges are provided with attention to the distance and parallelism of channel steel;
(3) the foundation is connected with at least two points of the main grounding grid, lap welding is adopted for connection, the welding length is 2 times of the width of the flat steel, and at least two edges are welded;
2) Installation of SFC control panel cabinet
The module component of the SFC control panel cabinet is translated to the foundation by adopting a rolling rod and a chain block at a slow speed, the bus contact surface of the SFC control panel cabinet is tightly connected, the opposite angle is fastened during fastening, and the connecting bolt is fastened by adopting a torque wrench;
3) Installation of SFC system matched isolation transformer cabinet
(1) Before the transformer is in place, cleaning the surface of the basic channel steel positioned at the position, and checking whether the specification and the model of the basic channel steel accord with the requirements;
(2) moving the transformer to the basic channel steel, taking down the rolling bars, adjusting the alignment of the longitudinal and transverse central lines to position the transformer, and welding and fixing the transformer after the adjustment;
4) SFC isolation switch cabinet installation
(1) Before the SFC isolating switch cabinet is in place, cleaning the surface of the basic channel steel positioned at the position, and checking whether the specification and the model of the SFC isolating switch cabinet meet the requirements;
(2) the SFC isolating switch cabinet is in place by using a hand-pulled inverted chain, the isolating switch cabinet is placed on the basic channel steel by using a closed bus hanging point, and the longitudinal and transverse central lines are adjusted to be aligned; after the closed bus is correspondingly adjusted, welding and fixing are carried out;
5) Laying of 6KV high-voltage cable
(1) When loading and unloading the cable reel, the cable on the cable reel should be fixed in advance, and measures for preventing the cable reel from rolling back and forth should be arranged on the vehicle; when the cable is unloaded, the cable cannot be pushed to the ground directly from the vehicle so as to be prevented from being damaged, and the cable should roll along the direction of winding the cable when rolling;
(2) before laying, making a phase color mark of the cable to prevent wrong connection; when cabling, the cable drum should be firmly and stably erected, and the distance between the drum edge and the ground is not smaller than 100mm; when the cable is pulled, the cable is led out from the upper part of the coil, and if the armor of the leading-out end is loosened, the cable is tightly bound;
6) Manufacturing of 6KV high-voltage cable head
The cable terminal adopts a cold contraction manufacturing mode, an angle steel bracket is added under a coil before the cable in the coil is connected, then the cable under the coil is arranged in order, the appearance is neat and attractive, the radian is consistent, a constructor on the coil makes marks at the beginning of the cable, and then the cable is pulled to a proper position for manufacturing a cable head;
7) Control cable laying and wiring
(1) After the in-coil cable is laid, the cables are arranged in a tidying way; if no cable is fixed in the tray, angle iron brackets and trunking should be additionally arranged, and the cable in the tray is checked whether the cable is omitted or not by comparing with the terminal block diagram;
(2) after the cables in the coil are put, arranging the cables in the coil, separating the cables according to the positions of the terminal rows, and determining the number of the cables under each row of terminal rows; if more cables are arranged in one disc, all the cables can be arranged from the middle of the disc and then separated into two side terminal rows; one layer of angle iron bracket is arranged without arranging a cable in a lower disc, and the other bracket can be added; the cable head of the first layer is lower than the cable head of the inner layer, so that the cable plate is easy to observe; if there are fewer cables in one tray, the cables are split from the left and right of the tray and the rows of terminals are arranged in layers. Determining the manufacturing position of a cable head, wherein the cable head is arranged at a position of 100mm in the entering reel cabinet, the cable heads of each row of cables are arranged at the same horizontal height, and the colors of heat shrinkage tubes for the cable heads are uniform;
(3) the cable sheath and armor are peeled off, and the shielding wire of the control cable is used for 4mm 2 The yellow-green alternate multi-strand soft copper grounding wires are connected, the grounding wires in one disc are collected and bound, and the grounding wires are reliably grounded with the grounding point; the head making positions of all the control cables are on the same horizontal line, the thicknesses of the cable heads are the same, and after the cable heads are made, the cable heads are firmly fixed by nylon binding belts;
(4) immediately hanging a cable board after the cable head is finished, wherein the specifications of the cable board are consistent, and the content of the cable board is complete; the font direction is consistent after the rubber head is worn, the wire cores are not required to be crossed, and the effect of attractive process is achieved;
(5) the cable core is divided into a proper position by contrasting the terminal strip and bent into a consistent radian to be connected to a corresponding terminal, so that the standby terminal is not allowed to be used for switching or randomly wiring; at most 2 wire cores can not be exceeded on the same terminal; the wires of all current and voltage loops are bent and are not allowed to be spliced by crimping; when the terminals are connected, the radian of the wire core in the same cabinet is consistent, and the cabinet is tidy and beautiful; the glue heads are arranged during wiring, so that the glue heads are ensured to be consistent in direction, and the observation is convenient; after the wiring is finished, checking whether all the wiring bolts have loosening phenomenon or not again, and ensuring firm and reliable wiring;
8) Cleaning site
After the construction is finished, the site garbage is intensively recovered and sorted for disposal, so that secondary pollution is prevented; the waste materials, waste oil and garbage generated in the construction process are sent to a fixed place for storage through special ways.
When the cable is laid, the scaffold is further erected, the scaffold plates are fully paved, gaps and probe plates are avoided, the lap joint length of the vertical rods and the large cross rods is more than 1.5m, and the small ends are pressed on the large ends during bundling, and the number of the bundling buckles is at least three.
When the cable is laid, the clearance between the cable and the heating power pipeline and between the cable and the heating power equipment is as follows: the parallel laying is larger than or equal to 1m, and the parallel laying cannot be performed on the upper part of the heating power pipeline, and the cross laying of the cables is larger than or equal to 0.5m; clearance between cable and insulation layer: the parallel laying is more than or equal to 0.5m, and the interval between the cross laying is more than or equal to 0.2m.
When the cable is fixed in position, the head and tail ends of the cable, the two ends of the turning joint and each supporting point of the cable are laid horizontally; the cables laid vertically or inclined at an angle exceeding 45 degrees are fixed on each bracket at intervals of 2 meters when laid on the bridge frame.
The invention has the positive beneficial effects that:
the construction method is used for constructing and installing the SFC system of the camera, so that the construction period can be shortened while the overall construction quality is ensured, the operation is simple, the maintenance is convenient, and the popularization is easy.
4. The specific embodiment is as follows:
the invention is further explained and illustrated below:
a construction method of a static variable frequency starting system of a large-scale camera unit comprises the following steps:
preparation:
1) Preparing tools required by construction;
2) Inspection of the device:
(1) after SFC system equipment is transported to the site, the SFC system equipment is stored in a place which is dry, ventilated, far away from damp and contains corrosive gas, and the SFC system equipment is unpacked at the first time to check whether collision damage phenomenon occurs due to transportation and other reasons or not, and the number of parts is checked;
(2) after checking and accepting scattered parts and standard parts, especially copper bus and cable, the scattered parts and standard parts should be transported to a special safe deposit box immediately to prevent the scattered parts and standard parts from being wetted, corroded, damaged and lost due to the fact that the scattered parts and standard parts are stored in an open warehouse;
the operation steps are as follows:
1) Installation of SFC equipment foundation channel steel
(1) The blanking of the basic channel steel is corrected firstly, cutting is carried out according to the design length, and when the cutting machine is used for blanking, the cutting machine is corrected firstly so as to ensure that the cut surface of the channel steel is flat;
(2) when the foundation channel steel is buried, the foundation channel steel is arranged at intervals according to the design, and is buried according to the design size; when laying, firstly finding out the elevation of the civil engineering, and after the foundation is installed, setting the top of the foundation to be 5-10mm higher than the trowelling ground according to the design; spot welding is firstly carried out on a sizing block leveling foundation, after the size is checked, the sizing block leveling foundation is firmly welded with the embedded iron, and the two sections of disc foundations with bus bridges are provided with attention to the distance and parallelism of channel steel;
(3) the foundation is connected with at least two points of the main grounding grid, lap welding is adopted for connection, the welding length is 2 times of the width of the flat steel, and at least two edges are welded;
2) Installation of SFC control panel cabinet
The module component of the SFC control panel cabinet is translated to the foundation by adopting a rolling rod and a chain block at a slow speed, the bus contact surface of the SFC control panel cabinet is tightly connected, the opposite angle is fastened during fastening, and the connecting bolt is fastened by adopting a torque wrench;
3) Installation of SFC system matched isolation transformer cabinet
(1) Before the transformer is in place, cleaning the surface of the basic channel steel positioned at the position, and checking whether the specification and the model of the basic channel steel accord with the requirements;
(2) moving the transformer to the basic channel steel, taking down the rolling bars, adjusting the alignment of the longitudinal and transverse central lines to position the transformer, and welding and fixing the transformer after the adjustment;
4) SFC isolation switch cabinet installation
(1) Before the SFC isolating switch cabinet is in place, cleaning the surface of the basic channel steel positioned at the position, and checking whether the specification and the model of the SFC isolating switch cabinet meet the requirements;
(2) the SFC isolating switch cabinet is in place by using a hand-pulled inverted chain, the isolating switch cabinet is placed on the basic channel steel by using a closed bus hanging point, and the longitudinal and transverse central lines are adjusted to be aligned; after the closed bus is correspondingly adjusted, welding and fixing are carried out;
5) Laying of 6KV high-voltage cable
(1) When loading and unloading the cable reel, the cable on the cable reel should be fixed in advance, and measures for preventing the cable reel from rolling back and forth should be arranged on the vehicle; when the cable is unloaded, the cable cannot be pushed to the ground directly from the vehicle so as to be prevented from being damaged, and the cable should roll along the direction of winding the cable when rolling;
(2) before laying, making a phase color mark of the cable to prevent wrong connection; when cabling, the cable drum should be firmly and stably erected, and the distance between the drum edge and the ground is not smaller than 100mm; when the cable is pulled, the cable is led out from the upper part of the coil, and if the armor of the leading-out end is loosened, the cable is tightly bound;
6) Manufacturing of 6KV high-voltage cable head
The cable terminal adopts a cold contraction manufacturing mode, an angle steel bracket is added under a coil before the cable in the coil is connected, then the cable under the coil is arranged in order, the appearance is neat and attractive, the radian is consistent, a constructor on the coil makes marks at the beginning of the cable, and then the cable is pulled to a proper position for manufacturing a cable head;
7) Control cable laying and wiring
(1) After the in-coil cable is laid, the cables are arranged in a tidying way; if no cable is fixed in the tray, angle iron brackets and trunking should be additionally arranged, and the cable in the tray is checked whether the cable is omitted or not by comparing with the terminal block diagram;
(2) after the cables in the coil are put, arranging the cables in the coil, separating the cables according to the positions of the terminal rows, and determining the number of the cables under each row of terminal rows; if more cables are arranged in one disc, all the cables can be arranged from the middle of the disc and then separated into two side terminal rows; one layer of angle iron bracket is arranged without arranging a cable in a lower disc, and the other bracket can be added; the cable head of the first layer is lower than the cable head of the inner layer, so that the cable plate is easy to observe; if there are fewer cables in one tray, the cables are split from the left and right of the tray and the rows of terminals are arranged in layers. Determining the manufacturing position of a cable head, wherein the cable head is arranged at a position of 100mm in the entering reel cabinet, the cable heads of each row of cables are arranged at the same horizontal height, and the colors of heat shrinkage tubes for the cable heads are uniform;
(3) the cable sheath and armor are peeled off, and the shielding wire of the control cable is used for 4mm 2 The yellow-green alternate multi-strand soft copper grounding wires are connected, the grounding wires in one disc are collected and bound, and the grounding wires are reliably grounded with the grounding point; the head making positions of all the control cables are on the same horizontal line, the thicknesses of the cable heads are the same, and after the cable heads are made, the cable heads are firmly fixed by nylon binding belts;
(4) immediately hanging a cable board after the cable head is finished, wherein the specifications of the cable board are consistent, and the content of the cable board is complete; the font direction is consistent after the rubber head is worn, the wire cores are not required to be crossed, and the effect of attractive process is achieved;
(5) the cable core is divided into a proper position by contrasting the terminal strip and bent into a consistent radian to be connected to a corresponding terminal, so that the standby terminal is not allowed to be used for switching or randomly wiring; at most 2 wire cores can not be exceeded on the same terminal; the wires of all current and voltage loops are bent and are not allowed to be spliced by crimping; when the terminals are connected, the radian of the wire core in the same cabinet is consistent, and the cabinet is tidy and beautiful; the glue heads are arranged during wiring, so that the glue heads are ensured to be consistent in direction, and the observation is convenient; after the wiring is finished, checking whether all the wiring bolts have loosening phenomenon or not again, and ensuring firm and reliable wiring;
8) Cleaning site
After the construction is finished, the site garbage is intensively recovered and sorted for disposal, so that secondary pollution is prevented; the waste materials, waste oil and garbage generated in the construction process are sent to a fixed place for storage through a special way;
the cable laying method comprises the steps of setting up a scaffold, wherein scaffold plates are fully paved, gaps and probe plates are avoided, the lap joint length of vertical rods and large cross rods is more than 1.5m, and small ends are pressed on large ends during bundling, and the number of bundling buckles is at least three; clear distance between cable and thermodynamic pipe, thermodynamic equipment: the parallel laying is larger than or equal to 1m, and the parallel laying cannot be performed on the upper part of the heating power pipeline, and the cross laying of the cables is larger than or equal to 0.5m; clearance between cable and insulation layer: the parallel laying is more than or equal to 0.5m, and the interval between the cross laying is more than or equal to 0.2m;
when the cable is fixed in position, the head and tail ends of the cable, the two ends of the turning joint and each supporting point of the cable are laid horizontally; the cables laid vertically or inclined at an angle exceeding 45 degrees are fixed on each bracket at intervals of 2 meters when laid on the bridge frame.
By means of the construction method, installation and construction can be performed in the shortest time, all unit components can be installed, overall construction efficiency is improved, and construction quality is guaranteed.
Claims (3)
1. A construction method of a static variable frequency starting system of a large-scale camera unit comprises the following steps:
preparation:
1) Preparing tools required by construction;
2) Inspection of the device:
(1) after SFC system equipment is transported to the site, the SFC system equipment is stored in a place which is dry, ventilated, far away from damp and contains corrosive gas, and the SFC system equipment is unpacked at the first time to check whether collision damage phenomenon occurs due to transportation and other reasons or not, and the number of parts is checked;
(2) after checking and accepting scattered parts and standard parts, especially copper bus and cable, the scattered parts and standard parts should be transported to a special safe deposit box immediately to prevent the scattered parts and standard parts from being wetted, corroded, damaged and lost due to the fact that the scattered parts and standard parts are stored in an open warehouse;
the operation steps are as follows:
1) Installation of SFC equipment foundation channel steel
(1) The blanking of the basic channel steel is corrected firstly, cutting is carried out according to the design length, and when the cutting machine is used for blanking, the cutting machine is corrected firstly so as to ensure that the cut surface of the channel steel is flat;
(2) when the foundation channel steel is buried, the foundation channel steel is arranged at intervals according to the design, and is buried according to the design size; when laying, firstly finding out the elevation of the civil engineering, and after the foundation is installed, setting the top of the foundation to be 5-10mm higher than the trowelling ground according to the design; spot welding is firstly carried out on a sizing block leveling foundation, after the size is checked, the sizing block leveling foundation is firmly welded with the embedded iron, and the two sections of disc foundations with bus bridges are provided with attention to the distance and parallelism of channel steel;
(3) the foundation is connected with at least two points of the main grounding grid, lap welding is adopted for connection, the welding length is 2 times of the width of the flat steel, and at least two edges are welded;
2) Installation of SFC control panel cabinet
The module component of the SFC control panel cabinet is translated to the foundation by adopting a rolling rod and a chain block at a slow speed, the bus contact surface of the SFC control panel cabinet is tightly connected, the opposite angle is fastened during fastening, and the connecting bolt is fastened by adopting a torque wrench;
installation of SFC system matched isolation transformer cabinet
(1) Before the transformer is in place, cleaning the surface of the basic channel steel positioned at the position, and checking whether the specification and the model of the basic channel steel accord with the requirements;
(2) moving the transformer to the basic channel steel, taking down the rolling bars, adjusting the alignment of the longitudinal and transverse central lines to position the transformer, and welding and fixing the transformer after the adjustment;
SFC isolation switch cabinet installation
(1) Before the SFC isolating switch cabinet is in place, cleaning the surface of the basic channel steel positioned at the position, and checking whether the specification and the model of the SFC isolating switch cabinet meet the requirements;
(2) the SFC isolating switch cabinet is in place by using a hand-pulled inverted chain, the isolating switch cabinet is placed on the basic channel steel by using a closed bus hanging point, and the longitudinal and transverse central lines are adjusted to be aligned; after the closed bus is correspondingly adjusted, welding and fixing are carried out;
5) Laying of 6KV high-voltage cable
(1) When loading and unloading the cable reel, the cable on the cable reel should be fixed in advance, and measures for preventing the cable reel from rolling back and forth should be arranged on the vehicle; when the cable is unloaded, the cable cannot be pushed to the ground directly from the vehicle so as to be prevented from being damaged, and the cable should roll along the direction of winding the cable when rolling;
(2) before laying, making a phase color mark of the cable to prevent wrong connection; when cabling, the cable drum should be firmly and stably erected, and the distance between the drum edge and the ground is not smaller than 100mm; when the cable is pulled, the cable is led out from the upper part of the coil, and if the armor of the leading-out end is loosened, the cable is tightly bound;
6) Manufacturing of 6KV high-voltage cable head
The cable terminal adopts a cold contraction manufacturing mode, an angle steel bracket is added under a coil before the cable in the coil is connected, then the cable under the coil is arranged in order, the appearance is neat and attractive, the radian is consistent, a constructor on the coil makes marks at the beginning of the cable, and then the cable is pulled to a proper position for manufacturing a cable head;
control cable laying and wiring
(1) After the in-coil cable is laid, the cables are arranged in a tidying way; if no cable is fixed in the tray, angle iron brackets and trunking should be additionally arranged, and the cable in the tray is checked whether the cable is omitted or not by comparing with the terminal block diagram;
(2) after the cables in the coil are put, arranging the cables in the coil, separating the cables according to the positions of the terminal rows, and determining the number of the cables under each row of terminal rows; if more cables are arranged in one disc, all the cables can be arranged from the middle of the disc and then separated into two side terminal rows; one layer of angle iron bracket is arranged without arranging a cable in a lower disc, and the other bracket can be added; the cable head of the first layer is lower than the cable head of the inner layer, so that the cable plate is easy to observe; if there are fewer cables in one tray, the cables are separated from the left and right of the tray, and the terminal rows are arranged in layers; determining the manufacturing position of a cable head, wherein the cable head is arranged at a position of 100mm in the entering reel cabinet, the cable heads of each row of cables are arranged at the same horizontal height, and the colors of heat shrinkage tubes for the cable heads are uniform;
(3) the cable sheath and armor are peeled off, and the shielding wire of the control cable is used for 4mm 2 The yellow-green alternate multi-strand soft copper grounding wires are connected, and the grounding wires in one disc are collectedBinding and reliably grounding with a grounding point; the head making positions of all the control cables are on the same horizontal line, the thicknesses of the cable heads are the same, and after the cable heads are made, the cable heads are firmly fixed by nylon binding belts;
(4) immediately hanging a cable board after the cable head is finished, wherein the specifications of the cable board are consistent, and the content of the cable board is complete; the font direction is consistent after the rubber head is worn, the wire cores are not required to be crossed, and the effect of attractive process is achieved;
(5) the cable core is divided into a proper position by contrasting the terminal strip and bent into a consistent radian to be connected to a corresponding terminal, so that the standby terminal is not allowed to be used for switching or randomly wiring; at most 2 wire cores can not be exceeded on the same terminal; the wires of all current and voltage loops are bent and are not allowed to be spliced by crimping; when the terminals are connected, the radian of the wire core in the same cabinet is consistent, and the cabinet is tidy and beautiful; the glue heads are arranged during wiring, so that the glue heads are ensured to be consistent in direction, and the observation is convenient; after the wiring is finished, checking whether all the wiring bolts have loosening phenomenon or not again, and ensuring firm and reliable wiring;
(6) when the cable is fixed in position, the head and tail ends of the cable, the two ends of the turning joint and each supporting point of the cable are laid horizontally; the cables which are vertically laid or obliquely laid at an angle exceeding 45 degrees are fixed on each bracket at intervals of 2 meters when laid on the bridge;
cleaning site
After the construction is finished, the site garbage is intensively recovered and sorted for disposal, so that secondary pollution is prevented; the waste materials, waste oil and garbage generated in the construction process are sent to a fixed place for storage through special ways.
2. The construction method of the stationary variable frequency starting system of the large-sized camera set according to claim 1, wherein the construction method comprises the following steps: when the cable is laid, the scaffold is further erected, the scaffold plates are fully paved, gaps and probe plates are avoided, the lap joint length of the vertical rods and the large cross rods is more than 1.5m, and the small ends are pressed on the large ends during bundling, and the number of the bundling buckles is at least three.
3. The construction method of the stationary variable frequency starting system of the large-sized camera set according to claim 1, wherein the construction method comprises the following steps: when the cable is laid, the clearance between the cable and the heating power pipeline and between the cable and the heating power equipment is as follows: the parallel laying is larger than or equal to 1m, and the parallel laying cannot be performed on the upper part of the heating power pipeline, and the cross laying of the cables is larger than or equal to 0.5m; clearance between cable and insulation layer: the parallel laying is more than or equal to 0.5m, and the interval between the cross laying is more than or equal to 0.2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243536.5A CN110971147B (en) | 2019-12-06 | 2019-12-06 | Construction method of static variable-frequency starting system of large-sized camera set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911243536.5A CN110971147B (en) | 2019-12-06 | 2019-12-06 | Construction method of static variable-frequency starting system of large-sized camera set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110971147A CN110971147A (en) | 2020-04-07 |
| CN110971147B true CN110971147B (en) | 2023-09-01 |
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| CN201911243536.5A Active CN110971147B (en) | 2019-12-06 | 2019-12-06 | Construction method of static variable-frequency starting system of large-sized camera set |
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