CN104242191A - Benzene hydrogenation engineering instrument pipeline laying method - Google Patents
Benzene hydrogenation engineering instrument pipeline laying method Download PDFInfo
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- CN104242191A CN104242191A CN201310244977.3A CN201310244977A CN104242191A CN 104242191 A CN104242191 A CN 104242191A CN 201310244977 A CN201310244977 A CN 201310244977A CN 104242191 A CN104242191 A CN 104242191A
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Abstract
A benzene hydrogenation engineering instrument pipeline laying method is characterized by comprising the following steps that a, a cable bridge is mounted; b, a cable pipe is laid; c, a cable is laid; d, the cable is fixed; e, cable wiring is carried out. The benzene hydrogenation engineering instrumentation installation method becomes the instruction classic of benzene hydrogenation engineering instrumentation mounting work in the industry.
Description
Technical field
The present invention relates to a kind of gauge pipe wire routing method, specifically, is a kind of benzene hydrogenation engineering gauge pipe wire routing method.
Background technology
The technique of benzol hydro refining unit is more special, its system complex, and equipment is many, and the pressure of system own, temperature are higher, and pumping unit does not allow idle running.Benzene hydrogenation engineering be mainly divided into central control room and electric substation, refining plant, water supply and sewage work, air compression station, storage and handling facility (tank field and pump house), full factory powers and the illumination of full factory, torch and engineering affiliated facility, lightning protection, fire prevention, explosion-proof particular/special requirement is had in the electrical install of these facilities, wherein the medium contained of benzene hydrogenation process measurement is wide, and the medium of measurement has gas: air, nitrogen, hydrocarbon; Also liquid is had: water, benzene, dimethylbenzene, non-aromatic hydrocarbon; Also has steam: high steam, middle pressure steam, low-pressure steam.Benzol hydro refining unit have employed thermometric instrument, pressure (containing pressure reduction) instrument, flow instrument, thing position (comprising material level and liquid level) instrument and analysis meter (gas ingredients, PH, conductivity, concentration etc.) multi-class instrument and DCS control system.Benzene hydrogenation engineering gauge pipe wire routing is the important step in whole benzene hydrogenation engineering system.Current domestic built or be still in the stage lack of standardization in the gauge pipe wire routing method of building benzene hydrogenation engineering, there is a lot of not science, irrational place, manufacturing process is numerous and diverse, manufacturing cost is high.
Therefore known benzene hydrogenation engineering gauge pipe wire routing method also exists above-mentioned all inconvenience and problem.
Summary of the invention
Object of the present invention, is to propose a kind of normalization, safe and reliable benzene hydrogenation engineering gauge pipe wire routing method.
For achieving the above object, technical solution of the present invention is:
A kind of benzene hydrogenation engineering gauge pipe wire routing method, is characterized in that comprising the following steps:
The installation of a, cable testing bridge, wherein:
(1) cable testing bridge is arranged and building, the gradient that structures are identical; The suspension bracket of cable testing bridge, or paste wall, support that ditch, tunnel wall are installed, when the unevenness of its end face or wall is more than 20mm, levelling with adjustment ironware, look for straight;
(2) in the connection of cable testing bridge, when adopting connecting plate to connect with bolt, bolt is cup square neck galvanized bolt, by outwards to penetrate inside crane span structure and fastening; When employing is welded to connect, its welding quality should meet related request and have the measure preventing from being out of shape;
(3) steel cable bridge of straightway is more than 30m, or will arrange cable testing bridge expansion joint when the expansion joint of cable testing bridge leap building, building;
(4) when in cable tunnel cable trough, installing cables crane span structure runs into absolute altitude significant change, cable testing bridge arranges the flat turn gradient, must not abrupt change;
(5) when cable testing bridge adopts the method for welding to fix on trailing arm, pad is arranged on the inner side of cable testing bridge;
(6) cable testing bridge and pernetti thereof will arrange reliable ground;
B, cable tube lay, and comprise electric piping and instrument pipe arrangement, wherein:
(1) electric piping
1) coordinate civil engineering that built-in pipe is carried out pre-buried according to construction drawing, embedded pipe orifice will take clogging-preventing measures;
2) unit pipe arrangement otherwise hinder the operation of plant equipment, maintenance and maintenance; The fixing employing U bolt of pipe fixes on equal leg angle support;
3) outdoor cable tube is after cable penetrates, and its mouth of pipe adopts the shutoff of waterproof clay plugging material tight; The degree of depth that plugging material inserts the mouth of pipe is not less than the diameter of pipe, and is not less than 40mm;
4) support point of pipeline is installed, wherein:
A) support point of pipeline is wanted evenly; The distance at the outpost of the tax office and the mouth of pipe, elbow mid point, electric device or carton and crate edge is 150 ~ 500mm;
B) the bright ultimate range that arranges between steel pipe clamp of joining is in table 1;
The bright ultimate range of joining between steel pipe clamp of table 1
C) brightly ultimate range between hard PVC pipe pipe clamp is joined in table 2;
Table 2 is bright joins the ultimate range (m) arranged between hard PVC pipe pipe clamp
(2) instrument pipe arrangement, wherein:
1) instrument cable protection tube adopts coating steel pipe;
2) simmering and bending of cable protection pipe adopt cold stewing;
3) cable protection pipe end-o f-pipe-control, comprises:
A) connection of cable protection pipe and trough type bridge frame or junction box, cable protection pipe enters from crane span structure side;
B) breakaway-element process is adopted between cable protection pipe and ladder-type bridge frame;
C) cable protection pipe is connected with instrument box, control box;
D) connection of the instrumentation such as cable protection pipe and transmitter adopts connection by metal hose;
C, cable laying, wherein:
(1) cable laying is accomplished horizontally to regard line as, vertically sees that in flakes, lead direction is consistent, and camber is consistent, and the consistent degree of tightness of remaining is suitable, and mutual spacing is consistent, position consistency of listing, and it is folded to avoid intersecting pressure, reaches neat appearance;
(2) cable laying will avoid manhole, equipment lifting eye, explosionproof hole and peep-hole, and the cable near be laid in main equipment and oil pipe line does not affect the dismounting of equipment and pipeline; Will maintain a certain distance between cable and thermal control conduit, when upper and lower parallel lay-up made by cable and conduit, its spacing should be greater than 200mm; Power cable, control cables, signal cable answer layer-built cables installation, and arrange from top to bottom in order; Cable lays by design layering;
(3) cable pipe lay middle cable protection pipe be laid in repair and maintenance convenient, without high vibration and the place not being vulnerable to mechanical damage, and to keep fire away and thermal source, cable protection pipe fixedly secures on support, and cable tube lays neat appearance, avoids intersection;
(4) cable lays in wire casing: the place that measuring point is relatively concentrated adopts cable protection pipe and remittance wire casing mode used in combination;
Fixing of d, cable, wherein:
(1) cable fixing on bracket: the elbow both sides cable of level and vertical shaft supporting piece respectively should establish a fixing point, and fixing point is 300mm apart from elbow center, and horizontal straight section 300mm establishes a fixing point, and vertical shaft is then 2m;
(2) enter to coil the fixing of cable: control panel is that lower inlet plate should install cable stationary barrier additional in Pan Tai bottom, support is apart from dish 300 ~ 400mm, and same place support distance should be consistent; Each layer cable should be drawn from this layer of bracket side, and with bracket longitudinal axis orthogonal;
(3) cable number plate: the unified cable card of cable number plate;
(4) control cabinet, terminal box and equipment inlet wire as far as possible by lower curtate or lateral leadin, should should add waterproof curved simultaneously;
(5) screen wiring palpus one end ground connection of shielded type cable, shielding layer grounding point meets design, if will connect reliable by the breakpoint of screen during terminal box and carry out insulation;
E, cable connection, wherein:
(1) winding displacement and wiring
Winding displacement: after carrying out cable end, independent for the heart yearn of every root control cables colligation bunchy, core for subsequent use will come in heart yearn number by the length of the longest heart yearn;
(2) wiring: check and will perform mark on heart yearn to after core, puts preprepared identifying plate.
Benzene hydrogenation engineering gauge pipe wire routing method of the present invention can also be further achieved by the following technical measures.
Aforesaid method, wherein said step a(1) in, regulate ironware to adopt the channel-section steel consistent with the kind of support shaped steel or angle bar.
Aforesaid method, wherein said step a(3) in, in cable testing bridge expansion joint: the width at common cable crane span structure expansion joint is 50mm; The width at special cable crane span structure expansion joint will meet enough sags of cable and the requirement of radius of curvature.
After adopting technique scheme, benzene hydrogenation engineering gauge pipe wire routing method of the present invention has becomes unique status that in industry, the guidance of benzene hydrogenation engineering instrumentation installation exercise is classical.
Accompanying drawing explanation
Fig. 1 is a kind of suspension bracket scheme of installation of the embodiment of the present invention;
Fig. 2 is the another kind of suspension bracket scheme of installation of the embodiment of the present invention;
Fig. 3 is the support installing schematic diagram of the embodiment of the present invention;
Crane span structure flat turn gradient scheme of installation when Fig. 4 is the interior absolute altitude significant change of the embodiment of the present invention;
Fig. 5 is the A portion structural representation in Fig. 4;
Fig. 6 is a kind of cable testing bridge at right angle setting schematic diagram of the embodiment of the present invention;
Fig. 7 is the another kind of cable testing bridge at right angle setting schematic diagram of the embodiment of the present invention;
Fig. 8 is a kind of cable testing bridge scheme of installation through walls of the embodiment of the present invention;
Fig. 9 is the another kind of cable testing bridge scheme of installation through walls of the embodiment of the present invention;
Figure 10 is cable protection pipe and the trough type bridge frame scheme of installation of the embodiment of the present invention;
Figure 11 is the cable protection pipe of the embodiment of the present invention and the scheme of installation of ladder-type bridge frame;
Figure 12 is the cable protection pipe of the embodiment of the present invention and the scheme of installation of instrument box;
Figure 13 is the instrument cabinet inner cable arrangement schematic diagram of the embodiment of the present invention;
Figure 14 be the embodiment of the present invention instrumentation in distribution schematic diagram.
In figure: 1 embedded iron parts, 2 suspension brackets, 3 supports, 4 regulate ironware; 5 columns, 6 cable testing bridges, 7 angle steel trailing arms, 8 channel-section steel supports; 9 set bolts, 10 expansion bolts, 11 cables, 12 angle bar frames; 13 PLASTIC LAMINATEDs, 14 fire prevention calkings, 15 fire prevention pillows, 16 suspension rods; 17 cable protection pipes, 18 ground connection, 19 pipe silk sheets, 20 trough type bridge frames; 21 Protective sleeve for pipe orifice, 22 step type cable bridge frames, 23 instrument boxs.
Embodiment
The present invention is further illustrated below by way of specific embodiment.
Benzene hydrogenation engineering gauge pipe wire routing method of the present invention, is characterized in that comprising the following steps:
Now refer to Fig. 1 ~ Fig. 3, Fig. 1 is a kind of suspension bracket scheme of installation of the embodiment of the present invention, and Fig. 2 is the another kind of suspension bracket scheme of installation of the embodiment of the present invention, and Fig. 3 is the support installing schematic diagram of the embodiment of the present invention.
The installation of a, cable testing bridge, wherein:
(1) cable testing bridge will have the identical gradient with building, structures; The suspension bracket of cable testing bridge, or paste wall, support that ditch, tunnel wall are installed, when the unevenness of its end face or wall is more than 20mm, levelling with adjustment ironware, look for straight, described adjustment ironware adopts the channel-section steel consistent with the kind of support shaped steel or angle bar;
(2) in the connection of cable testing bridge, when adopting connecting plate to connect with bolt, bolt is cup square neck galvanized bolt, by outwards to penetrate inside crane span structure and fastening; When employing is welded to connect, its welding quality should meet related request and have the measure preventing from being out of shape;
(3) when the steel cable bridge of straightway is more than 30m, or cable testing bridge expansion joint to be set when the expansion joint of cable testing bridge leap building, building; The width at common cable crane span structure expansion joint is 50mm; The width at special cable crane span structure expansion joint (referring to that both sides foundation condition is inconsistent, as movement joint) will meet enough sags of cable and the requirement of radius of curvature;
Crane span structure flat turn gradient scheme of installation when Fig. 4 is the interior absolute altitude significant change of the embodiment of the present invention, Fig. 5 is the A portion structural representation in Fig. 4.
(4) when in cable tunnel cable trough, installing cables crane span structure runs into absolute altitude significant change, cable testing bridge will arrange the flat turn gradient, must not abrupt change;
Fig. 6 is a kind of cable testing bridge at right angle setting schematic diagram of the embodiment of the present invention, and Fig. 7 is the another kind of cable testing bridge at right angle setting schematic diagram of the embodiment of the present invention.
(5) when cable testing bridge adopts the method for welding to fix on trailing arm, pad is arranged on the inner side of cable testing bridge;
(6) cable testing bridge and pernetti thereof will arrange reliable ground;
Fig. 8 is a kind of cable testing bridge scheme of installation through walls of the embodiment of the present invention, and Fig. 9 is the another kind of cable testing bridge scheme of installation through walls of the embodiment of the present invention.
B, cable tube lay, and comprise electric piping and instrument pipe arrangement, wherein:
(1) electric piping
1) coordinate civil engineering that built-in pipe is carried out pre-buried according to construction drawing, the mouth of pipe will take clogging-preventing measures;
2) unit pipe arrangement otherwise hinder the operation of plant equipment, maintenance and maintenance; The fixing employing U bolt of pipe fixes on equal leg angle support;
3) outdoor cable tube is after cable penetrates, and its mouth of pipe adopts the shutoff of waterproof clay plugging material tight; The degree of depth that plugging material inserts the mouth of pipe is not less than the diameter of pipe and is not less than 40mm;
4) support point of pipeline:
A) support point of pipeline is wanted evenly; The distance at the outpost of the tax office and the mouth of pipe, elbow mid point, electric device or carton and crate edge is preferably 150 ~ 500mm;
B) bright ultimate range of joining between steel pipe clamp, in table 1;
C) bright ultimate range of joining between hard PVC pipe pipe clamp, in table 2;
The bright ultimate range of joining between steel pipe clamp of table 1
The bright ultimate range (m) of joining between hard PVC pipe pipe clamp of table 2
(2) instrument pipe arrangement
1) instrument cable protection tube generally adopts coating steel pipe.Secretly bury cable protection pipe many by civil engineering or electric specialty construction; Bright pipe arrangement adopts ∠ 50 × 50 × 5 angle bar frame, on-the-spot processing and fabricating, and adopts U-bolt to fix.Cable protection pipe is secretly joined part employing and is overlapped soldered connecing; The connection of bright pipe arrangement adopts thread connecting mode, must not weld, and adopts galvanized steel bar cross-over connection welding ground connection in protection tube junction, to ensure the electrical continuity of instrument cable protection tube pipeline, and is connected with electric protective ground main line.
2) simmering and bending of cable protection pipe adopt cold stewing, must not use fire bending mode.Its bending radius should meet the regulation of construction specification.
3) cable protection pipe end-o f-pipe-control, comprises:
A) connection of cable protection pipe and trough type bridge frame or junction box, as shown below.When cable protection pipe is connected with trough type bridge frame, for playing waterproof action, cable protection pipe must enter from crane span structure side, forbids to introduce from crane span structure bottom opening.
Figure 10 is cable protection pipe and the trough type bridge frame scheme of installation of the embodiment of the present invention;
B) breakaway-element process is adopted between cable protection pipe and ladder-type bridge frame.
Figure 11 is the cable protection pipe of the embodiment of the present invention and the scheme of installation of ladder-type bridge frame, and Figure 12 is the cable protection pipe of the embodiment of the present invention and the scheme of installation of instrument box.
C) connection of cable protection pipe and instrument box, control box.
D) connection of the instrumentation such as cable protection pipe and transmitter adopts connection by metal hose;
C, cable laying
(1) cable laying is accomplished horizontally to regard line as, vertically sees that in flakes, lead direction is consistent, and camber is consistent, and the consistent degree of tightness of remaining is suitable, and mutual spacing is consistent, position consistency of listing, and it is folded to avoid intersecting pressure, reaches neat appearance, cable laying must be commanded by special messenger, tell somebody what one's real intentions are laying all workmens of forward direction, cabling radical is described, the whole story holds, technological requirement and safety notice etc., personnel assignment is: straightway establishes 1 people every 4 ~ 6m, 1 people is respectively established in both sides, turning, through platform, floor, during wall up and down or front and back respectively establish 1 people, during cable pipe, 1 people is respectively established at two ends, when pipe is long or cable is excessive, set up 1 ~ 2 people, cable hank place establishes 3 ~ 4 people, commander is to blow a whistle as action order, circuit that is many or path length of turning answers segmentation to command, with exit for main reception and registration action command, submit onself to someone's direction completely, should exert oneself simultaneously or stop, when meeting turning or poling, first cable should be thrown away one large curved, draw forward again, during cable laying, cable should be drawn from the top of cable hank, and lead is if any lax, application wiring tighten, the velocity of rotation of cable hank should well coordinate with hauling speed, and the cable length of each traction is unsuitable long, in order to avoid draw on the ground, in laid processes, as find cable local have flattening or warpage scar serious, should stop check up and appraisal, processed, severe patient should prescind, and the control cables newly laid has not allowed joint, cable should have enough spare length, and to compensate the distortion caused because of variations in temperature, cable crossing building place of stretching should leave remaining, with Adaptive change, after every root cable laying is good, must treat that sufficient length is left at two ends, each turning is preliminary fixing to do, and when straightway edit is crossed and met designing requirement, just allow sawing, control cables should use friction tape end socket after cutting off, after every root cable laying is complete, mark should be hung up in time, lay next root cable, because of the relation that project progress needs or supplies, when in a section, the cable of arrangement can not once lay complete, the cable position that can not lay in time is reserved, after cable laying comes to an end, arrangement completely should be carried out, after cable laying, completion sketch should be drawn according to field condition, carry out and lay record, when cable has substitute, should record clear, cable under control panel, platform, is fixed after must first being put in order completely by cable, during terminals to be produced, then unclamped by strain relief clamp, to construct before making terminals.
(2) cable laying will avoid manhole, equipment lifting eye, explosionproof hole and peep-hole etc., and the cable near be laid in main equipment and oil pipe line should not affect the dismounting of equipment and pipeline; The temperature in cable laying region should higher than the permission Long-term service temperature of cable, and common cable must not be laid in temperature higher than the region of 65 DEG C, as laid, should take provision for thermal insulation or adopt heat proof cable; Be laid in inflammable and easy dust stratification dirt local time, adopt and close fireproof cable groove or cable protection pipe; Also will maintain a certain distance between cable and thermal control conduit, when upper and lower parallel lay-up made by cable and conduit, its spacing should be greater than 200mm, the top and cable is generally laid in, in order to avoid damage cable insulation during tube leaks; Cable parallel lay-up and the below at oil pipe mouth immediately below oil pipe line is forbidden to be passed through; Power cable, control cables, signal cable answer layer-built cables installation, and arrange from top to bottom by said sequence; Cable lays by design layering.
(3) cable pipe lay middle cable protection pipe should be laid in repair and maintenance convenient, without high vibration and the place not being vulnerable to mechanical damage, and should keep fire away and thermal source (ambient temperature must not higher than 65 DEG C), cable protection pipe should firmly be fixed on support, cable tube lays answers neat appearance, avoids intersecting, and should make straight-run as far as possible, during parallel lay-up, distance between two pipes should keep well-balanced, and for the ease of maintenance, the centre distance between two pipes is the twice of tube outer diameter, cable protection pipe is before threading, first should clean pipeline, method is the compressed air being about 0.25MPa with pressure, be blown in the pipe laid, to remove residual dirt and moisture, as non-compressed air, then can tie up with rag on steel wire, pull back for several times, mixed and disorderly substances in pipe and moisture are cleaned, after pipeline sweeping, talcum powder is blown into immediately in pipe, so that threading, cable penetrates in pipe, introduce with steel wire, steel wire is worn in advance before catheter laying, and add stifled on steel pipe, when pipeline is shorter, when elbow is less, steel wire can be sent to the other end by one end of pipe, again from the other end by cable tie on steel wire, trailing cable enters pipe, if pipeline is longer, when having problem from one end break-through steel wire, steel wire can be penetrated by pipe two ends simultaneously, steel cord end curves little hook, when two sections of steel wires meet in pipe, rotating lead-in wire with hand makes it be hooked in together, then by a steel wire pull-out, another root steel wire lashing is at cable top, cable is drawn in pipe, during cable pipe, one end is answered to have people to draw, one end has people to send, both will coordinate in action, penetrate the several cables in same pipe, should once enter parallel closing up, must not be wound around mutually, the cable in thermotechnical measurement loop should not penetrate in same protection tube with the cable of power loop, signal circuit etc., after cable has been worn, cable protection pipe should be arranged once, fastening loosening clamp and union, attractive in appearance to increase.
(4) cable lays in wire casing: the place that measuring point is relatively concentrated adopts cable protection pipe and remittance wire casing mode used in combination; The size of wire casing is selected by measuring point quantity, cable thickness and the condition such as easy to maintenance; the length of wire casing is determined by the position of measuring point and terminal box; the cable protection pipe come from measuring point can be pooled in a wire casing; when the length of required wire casing exceedes factory length, connect two wire casings with connecting plate, make it tight; wire casing is fixed by bolts on suspension bracket, support or platform; after cable laying is complete, wire casing is added a cover, fix with cheese head screw.；
Fixing of d, cable
(1) cable fixing on bracket: the elbow both sides cable of level and vertical shaft supporting piece respectively should establish a fixing point, fixing point is 300mm apart from elbow center, and horizontal straight section 300mm establishes a fixing point, and vertical shaft is then 2m, wiring uses unified wiring without exception, forbids to use iron wire or other combustibles.
(2) enter to coil the fixing of cable: control panel is that lower inlet plate should install cable stationary barrier additional in Pan Tai bottom, support is apart from dish 300 ~ 400mm, and same place support distance should be consistent; Each layer cable should be drawn from this layer of bracket side, and with bracket longitudinal axis orthogonal; The cable palpus colligation of entering same Pan Tai the same side is consistent, marshalling; It is fixing that cable enters after dish, if minimum terminal array pitch is tried to get to the heart of a matter comparatively near, can with regard to defiled or biserial on cable fixed mount, but same Pan Tai place should be consistent; Attached cable wiring is identical with the wiring that bracket uses, and Cable Management is complete, and interim wiring is removed without exception.
(3) cable number plate: the unified cable card of cable number plate; Cable number plate use one to draw without exception fix with cable, number plate should come same level, as enter to coil cable more time, cable number plate can line up oblique line;
(4) control cabinet, terminal box and equipment inlet wire as far as possible by lower curtate or lateral leadin, should should add waterproof curved simultaneously.In all kinds of Pan Tai, control cabinet, terminal box, all wire casing length that do not enter all wants marshalling more than the cable core of more than 200mm or other cables, and breaks into the bundle of circles and fix, and each bundle of lines is smooth vertical and horizontal.The use material of wiring in same dish platform should be identical;
(5) screen wiring palpus one end ground connection of shielded type cable, shielding layer grounding point meets design (DCS is on rack side joint ground), if will connect reliable by the breakpoint of screen during terminal box and carry out insulation;
E, cable connection
(1) winding displacement and wiring
Winding displacement: after carrying out cable end, should independent for the heart yearn of every root control cables colligation bunchy, and core for subsequent use should come in heart yearn number by the length of the longest heart yearn, and heart yearn bundle generally lines up circle, because row is fairly simple, attractive in appearance like this; During the arrangement of each heart yearn bundle, should be parallel to each other, lateral core wire harness or heart yearn should with longitudinal heart yearn Shu Chuizhi, the distance of heart yearn bundle and heart yearn interfascicular should be well-balanced, and as far as possible close; After sequencing wire harness, get final product separated time, wiring, before wiring, must school line be carried out, when being arranged in dish, platform side is when carrying out wiring, can at dish, after platform carefully connects the wire, then with terminal box or equipment side school line on the spot, this is because dish, platform side cable are more, such separated time is more convenient, construction is simple, and technique is attractive in appearance, but also the end of a thread that terminal board goes between should be unloaded down when school line, in order to avoid get lines crossed, make the mistake.
(2) wiring: check after core, mark should be performed on heart yearn, preprepared identifying plate is put; After the complete line in school, just according to the position of respective terminal row, heart yearn can be released one by one from wire harness, loose core line time, answer keeping parallelism each other, and leave certain length, core secretly can be taken out or brightly to take out, and determines according to actual conditions, and it requires as neat, attractive in appearance, well-balanced, pleasing; Redundance according to the position of terminal board, can slice off by the heart yearn of releasing, and peels off insulation with wire stripping pliers or electrician's knife, to go between, should not damage copper core during wire stripping, the oxide on heart yearn and the insulation bits application knife back are wiped off, to make contact good, after heart yearn is disposed, package wire size mark; During multiply copper hinge line, core termination can be zinc-plated, makes integrally, as single cord, also can use cold pressing terminal lug, and cable core connects with lug plate, crimps with special manual Crimping Pliers.
Figure 13 be the embodiment of the present invention instrument cabinet inner cable arrangement schematic diagram, Figure 14 be the embodiment of the present invention instrumentation in distribution schematic diagram.
Benzene hydrogenation engineering gauge pipe wire routing method of the present invention is adopted to have safe and reliable feature.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (3)
1. a benzene hydrogenation engineering gauge pipe wire routing method, is characterized in that comprising the following steps:
The installation of a, cable testing bridge, wherein:
(1) cable testing bridge is arranged and building, the gradient that structures are identical; The suspension bracket of cable testing bridge, or paste wall, support that ditch, tunnel wall are installed, when the unevenness of its end face or wall is more than 20mm, levelling with adjustment ironware, look for straight;
(2) in the connection of cable testing bridge, when adopting connecting plate to connect with bolt, bolt is cup square neck galvanized bolt, by outwards to penetrate inside crane span structure and fastening; When employing is welded to connect, its welding quality should meet related request and have the measure preventing from being out of shape;
(3) steel cable bridge of straightway is more than 30m, or will arrange cable testing bridge expansion joint when the expansion joint of cable testing bridge leap building, building;
(4) when in cable tunnel cable trough, installing cables crane span structure runs into absolute altitude significant change, cable testing bridge arranges the flat turn gradient, must not abrupt change;
(5) when cable testing bridge adopts the method for welding to fix on trailing arm, pad is arranged on the inner side of cable testing bridge;
(6) cable testing bridge and pernetti thereof will arrange reliable ground;
B, cable tube lay, and comprise electric piping and instrument pipe arrangement, wherein:
(1) electric piping
1) coordinate civil engineering that built-in pipe is carried out pre-buried according to construction drawing, embedded pipe orifice will take clogging-preventing measures;
2) unit pipe arrangement otherwise hinder the operation of plant equipment, maintenance and maintenance; The fixing employing U bolt of pipe fixes on equal leg angle support;
3) outdoor cable tube is after cable penetrates, and its mouth of pipe adopts the shutoff of waterproof clay plugging material tight; The degree of depth that plugging material inserts the mouth of pipe is not less than the diameter of pipe, and is not less than 40mm;
4) support point of pipeline is installed, wherein:
A) support point of pipeline is wanted evenly; The distance at the outpost of the tax office and the mouth of pipe, elbow mid point, electric device or carton and crate edge is 150 ~ 500mm;
B) the bright ultimate range that arranges between steel pipe clamp of joining is in table 1;
The bright ultimate range of joining between steel pipe clamp of table 1
C) brightly ultimate range between hard PVC pipe pipe clamp is joined in table 2;
Table 2 is bright joins the ultimate range (m) arranged between hard PVC pipe pipe clamp
(2) instrument pipe arrangement, wherein:
1) instrument cable protection tube adopts coating steel pipe;
2) simmering and bending of cable protection pipe adopt cold stewing;
3) cable protection pipe end-o f-pipe-control, comprises:
A) connection of cable protection pipe and trough type bridge frame or junction box, cable protection pipe enters from crane span structure side;
B) breakaway-element process is adopted between cable protection pipe and ladder-type bridge frame;
C) cable protection pipe is connected with instrument box, control box;
D) connection of the instrumentation such as cable protection pipe and transmitter adopts connection by metal hose;
C, cable laying, wherein:
(1) cable laying is accomplished horizontally to regard line as, vertically sees that in flakes, lead direction is consistent, and camber is consistent, and the consistent degree of tightness of remaining is suitable, and mutual spacing is consistent, position consistency of listing, and it is folded to avoid intersecting pressure, reaches neat appearance;
(2) cable laying will avoid manhole, equipment lifting eye, explosionproof hole and peep-hole, and the cable near be laid in main equipment and oil pipe line does not affect the dismounting of equipment and pipeline; Will maintain a certain distance between cable and thermal control conduit, when upper and lower parallel lay-up made by cable and conduit, its spacing should be greater than 200mm; Power cable, control cables, signal cable answer layer-built cables installation, and arrange from top to bottom in order; Cable lays by design layering;
(3) cable pipe lay middle cable protection pipe be laid in repair and maintenance convenient, without high vibration and the place not being vulnerable to mechanical damage, and to keep fire away and thermal source, cable protection pipe fixedly secures on support, and cable tube lays neat appearance, avoids intersection;
(4) cable lays in wire casing: the place that measuring point is relatively concentrated adopts cable protection pipe and remittance wire casing mode used in combination;
Fixing of d, cable, wherein:
(1) cable fixing on bracket: the elbow both sides cable of level and vertical shaft supporting piece respectively should establish a fixing point, and fixing point is 300mm apart from elbow center, and horizontal straight section 300mm establishes a fixing point, and vertical shaft is then 2m;
(2) enter to coil the fixing of cable: control panel is that lower inlet plate should install cable stationary barrier additional in Pan Tai bottom, support is apart from dish 300 ~ 400mm, and same place support distance should be consistent; Each layer cable should be drawn from this layer of bracket side, and with bracket longitudinal axis orthogonal;
(3) cable number plate: the unified cable card of cable number plate;
(4) control cabinet, terminal box and equipment inlet wire as far as possible by lower curtate or lateral leadin, should should add waterproof curved simultaneously;
(5) screen wiring palpus one end ground connection of shielded type cable, shielding layer grounding point meets design, if will connect reliable by the breakpoint of screen during terminal box and carry out insulation;
E, cable connection, wherein:
(1) winding displacement and wiring
Winding displacement: after carrying out cable end, independent for the heart yearn of every root control cables colligation bunchy, core for subsequent use will come in heart yearn number by the length of the longest heart yearn;
(2) wiring: check and will perform mark on heart yearn to after core, puts preprepared identifying plate.
2. benzene hydrogenation engineering gauge pipe wire routing method as claimed in claim 1, is characterized in that, described step a(1) in, regulate ironware to adopt the channel-section steel consistent with the kind of support shaped steel or angle bar.
3. benzene hydrogenation engineering gauge pipe wire routing method as claimed in claim 1, is characterized in that, described step a(3) in, in cable testing bridge expansion joint: the width at common cable crane span structure expansion joint is 50mm; The width at special cable crane span structure expansion joint will meet enough sags of cable and the requirement of radius of curvature.
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| CN201310244977.3A CN104242191B (en) | 2013-06-20 | 2013-06-20 | Benzene hydrogenation engineering gauge pipe wire routing method |
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| CN104678250A (en) * | 2015-03-18 | 2015-06-03 | 成都东唐金开科技有限公司 | Electricity leakage monitoring bracket for cable interlayer |
| CN106786267A (en) * | 2016-12-14 | 2017-05-31 | 上海建工建集团有限公司 | The fixing device and installation method of a kind of super thick concrete abnormity line pipe in a row |
| CN107769130A (en) * | 2016-09-06 | 2018-03-06 | 北京新创迪克系统集成技术有限公司 | A kind of laying method of the zinc-plated thin wall steel conduit of tightening formula |
| CN107958127A (en) * | 2017-12-22 | 2018-04-24 | 国网河北省电力公司经济技术研究院 | Cable laying design method, device, computer equipment and readable storage medium storing program for executing |
| CN108683132A (en) * | 2018-07-03 | 2018-10-19 | 郝航艺 | Cable protecting device of roller |
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| CN110323700A (en) * | 2018-03-28 | 2019-10-11 | 株式会社自动网络技术研究所 | Conducting channel |
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