CN114251522A - Coated pipe and coated pipe mounting method - Google Patents
Coated pipe and coated pipe mounting method Download PDFInfo
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- CN114251522A CN114251522A CN202111480370.6A CN202111480370A CN114251522A CN 114251522 A CN114251522 A CN 114251522A CN 202111480370 A CN202111480370 A CN 202111480370A CN 114251522 A CN114251522 A CN 114251522A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 54
- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000004567 concrete Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 30
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 238000001125 extrusion Methods 0.000 claims description 27
- 239000004568 cement Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000011900 installation process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005120 petroleum cracking Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/006—Rigid pipes specially profiled
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Sewage (AREA)
Abstract
The invention relates to a coating pipe and a coating pipe installation method. The coating pipe installation method comprises the following steps: taking out the tear line of the part of the coated pipe in the floor slab to ensure that the spiral groove of the part of the coated pipe in the floor slab is empty to form an exposed section of the spiral groove; installing the coated pipe in a vertical state at a set place; building a mould for pouring a floor slab; and (3) pouring concrete in the mould, forming a floor slab poured together with the coating pipe after the concrete is cured, and enabling the concrete to penetrate into the exposed section of the spiral groove to form the spiral water stopping blade. The invention proposes that the waterproof effect of the floor joint with the coating pipe can be improved when the coating pipe penetrates through the floor for installation, and the problem that the joint of the coating pipe on the floor map is easy to leak when the existing coating pipe penetrates through the floor and is poured in the floor is solved.
Description
Technical Field
The invention relates to a pipeline, in particular to a coated pipe and a coating pipe installation method.
Background
The structure of pipeline has the multiple, and the pipe fitting of pipeline will use different tubular products according to the use needs, and the quality of tubular product has directly decided the quality of pipe fitting. Such pipes are used in construction engineering, power plants, chemical plants, etc. The method comprises the following steps: PPP pipe, PVC pipe, UPC pipe, copper pipe, steel pipe, fiber pipe, composite pipe, galvanized pipe, and flexible pipe. There are tubes for high-pressure boilers which implement the standard GB/T5310: there is seamless steel pipe for conveying fluid of execution standard GB/T8163: there is seamless steel tube for low pressure boiler of execution standard GB 3087: a seamless steel pipe for petroleum cracking with an execution standard GB/T9948; there is an implementation standard GB/T14976 stainless steel seamless steel tube for fluid transport. Common materials for the metal tubes include alloy, carbon steel (10 #, 20#, 45 #), and stainless steel (304, 316). The pipes forming the conduit are made of standard length, and are shortened when the length of the conduit is less than the length of a single pipe, and are connected together by a conduit connector when the length of the conduit is greater than the length of a single pipe. In order to protect the metal pipe from corrosion and to meet the corresponding requirements, a coated pipe is formed by coating a surface pattern of the metal pipe. The following shortcomings exist when the existing coating pipe is used for the installation mode of vertically penetrating through a floor slab: water can permeate through the floor along the surface of the pipeline, so that water leakage is caused, and the floor is easy to generate the phenomenon of water leakage along the surface of the pipeline when penetrating through the floor.
Disclosure of Invention
The invention provides a coated pipe capable of improving the waterproof effect of a joint with a floor slab when the coated pipe penetrates through the floor slab for installation, and solves the problem that the floor slab is easy to leak along the surface of a pipeline when the coated pipe with the existing smooth surface structure penetrates through the floor slab and is poured in the floor slab.
The technical problem is solved by the following technical scheme: a coated pipe comprises a metal pipe and a coating covering the surface of the metal pipe, wherein a spiral groove spirally extending along the circumferential direction of the metal pipe is arranged on the outer circumferential surface of the metal pipe, a tearing line extending from one end of the spiral groove to the other end of the spiral groove is arranged in the spiral groove, and the coating covers the tearing line. When the spiral water stopping blade penetrates through a floor slab and water prevention is needed to be carried out at the joint of the spiral water stopping blade and the floor slab, two ends of the tearing line positioned in the floor slab are cut off from the whole tearing body and then taken out, the coating is covered by the tearing line, the part of the spiral groove positioned in the floor slab is torn, the spiral water stopping blade is formed in the part of the spiral groove, which is empty, when the floor slab is poured, and therefore the phenomenon of leakage caused by water permeation along the surface of the pipe can be effectively prevented.
Preferably, the tear line is housed entirely within the helical groove. The tearing line can be prevented from being exposed when the coating is thin.
Preferably, the tear line is in sealing abutment with both side walls of the helical groove. The side of the tear line far away from the coating layer can not be adhered in the spiral groove by the coating layer, so that labor is saved when the tear line is taken out.
Preferably, the two side walls of the spiral groove are both provided with resistance reducing grooves extending along the extending direction of the spiral groove, and the resistance reducing grooves are positioned between the bottom wall of the spiral groove and the sealing position of the tearing line and the side walls of the spiral groove. Can make laborsaving when pulling out the tear line, can make the water-proof effects of the spiral stagnant water blade that forms when using better.
Preferably, the cross section of the tearing line is a trapezoid with one end being wider and the other end being narrower towards the opening of the spiral groove, the opening of the cross section of the spiral groove is in the shape of the trapezoid, and the tearing line and the side wall of the spiral groove are in surface contact and sealing contact with each other. The effect of preventing the coating from entering the tearing line and facing one side of the bottom of the spiral groove is more reliable, and labor is saved when the tearing line is pulled out.
Preferably, a feed guide groove extending along the axial direction of the metal pipe is formed in the outer peripheral surface of the metal pipe, and the feed guide groove is filled with the coating. When the tearing line is cut off, a chisel is used for chiseling from a part of the feed guide groove, which is aligned with the part of the tearing line to be cut off, then the chisel is used for prying the head of the cut part of the tearing line, the head pried by the tearing line is pinched to pull the tearing line, and the part of the tearing line to be taken out is taken out. The tearing line can be easily cut off in a labor-saving manner.
Preferably, the depth of the feed guide groove is greater than the depth of the spiral groove. Can conveniently and labor-saving chisel the tearing lines completely. The uncontrollable damage to the metal pipe when the tear line is cut off is avoided.
Preferably, two planes on which the two side walls of the feed guide groove are positioned are parallel, and an included angle between a plane defined by a boundary line between the side wall of the feed guide groove and the outer peripheral surface of the metal pipe and a center line of the metal pipe and a plane on which the side wall of the feed guide groove is positioned is 10-45 degrees. The section that forms when cutting the broken tear line of cutting is the inclined plane, can be so that when prying the head of tear line, be difficult to skid, reliability when can improving the tear line head of prying.
The invention also provides a coating pipe installation method, which comprises the following steps of: the two ends of the part of the tearing line, which is positioned in the floor slab, of the coating pipe are disconnected with the tearing line to form a tearing line taking-out section, and the coating covering the tearing line taking-out section is torn by the tearing line taking-out section when the tearing line taking-out section is taken out, so that the part of the spiral groove, which is originally used for accommodating the tearing line taking-out section, forms a spiral groove exposed section; secondly, the coating pipe is arranged at a set place in a vertical state; thirdly, building a mould for pouring the floor slab; fourthly, pouring a floor slab: and pouring concrete in the mould, forming a floor slab after the concrete is cured, pouring the floor slab and the coating pipe together, and forming the spiral water stopping blade extending along the circumferential direction of the coating pipe by the concrete penetrating into the exposed section of the spiral groove and curing. After the floor slab and the coating pipes are poured together, the floor slab is not easy to leak from the part connected with the coating pipes, and the waterproof effect of the floor slab at the place where the pipeline passes through when the pipeline vertically penetrates through the floor slab is improved.
Preferably, in the fourth step, the concrete is further filled into the resistance reducing groove to be cured to form two spiral resistance increasing strips, wherein the extending directions of the two sides of the spiral water stopping blade in the thickness direction are consistent with the extending direction of the spiral water stopping blade. The waterproof effect can be further passed.
Preferably, the mold is further provided with a filter cylinder sleeved on the coating pipe, the concrete in the fourth step is poured outside the filter cylinder, cement slurry in the concrete enters the inside of the filter cylinder through filter holes of the filter cylinder, the cement slurry entering the filter cylinder flows into the exposed section of the spiral groove to be cured to form the spiral water stopping blade, the cement slurry in the filter cylinder is cured to form the cement slurry cylinder, particles in the concrete are blocked outside the filter cylinder, and the filter cylinder is taken out of the concrete before the concrete is cured. Can prevent that particulate matter (sand) in the concrete from getting into the helicla flute to lead to the helicla flute can not be filled to full, make the compactedness of the spiral stagnant water blade of formation and the leakproofness of being connected with the spiral cell wall weaken, and lead to water-proof effects to descend.
Preferably, a dredging ring extending along the circumferential direction of the filter cylinder is arranged in the filter cylinder, the outer circumferential surface of the dredging ring is abutted with the inner circumferential surface of the filter cylinder, and in the fourth step, when concrete is poured into the mold, the dredging ring is moved up and down to push particles which are blocked in the filter holes of the filter cylinder and one end of which extends into the filter cylinder back to the outside of the filter cylinder. The in-process of pouring the floor reciprocates the mediation ring for block up in the filtration pore of cartridge filter and stretch into particulate matter (stone) in the cartridge filter by the top return cartridge filter outside, play the effect of mediation filtration pore, thereby improve the efficiency in the grout entering cartridge filter in the concrete.
Preferably, the upper end of mediation ring is equipped with the extrusion guide ring, the external diameter of going up the extrusion guide ring diminishes from upwards gradually down, the lower extreme of mediation ring is equipped with down the extrusion guide ring, the external diameter of extruding the guide ring down is from upwards getting bigger gradually down. The phenomenon that the dredging ring is clamped and is stuck to sand protruding into the filter cylinder is not easy to generate, and the force of the sand on the wall of the filter hole along the vertical direction in the process of driving the sand to return to the outside of the filter cylinder can be reduced. The beneficial effects of realizing the laborsaving drive, preventing mediation ring and cartridge filter from being damaged are realized.
Preferably, a grouting pressurizing ring extending along the circumferential direction of the dredging ring is arranged on the inner circumferential surface of the dredging ring, an upper extrusion inclined surface extending along the circumferential direction of the dredging ring is arranged between the upper end surface of the grouting pressurizing ring and the inner circumferential surface, the upper extrusion inclined surface is inclined upwards towards the center of the dredging ring, a lower extrusion inclined surface extending along the circumferential direction of the dredging ring is arranged between the lower end surface of the grouting pressurizing ring and the inner circumferential surface, and the lower extrusion inclined surface is inclined downwards towards the center of the dredging ring. When the dredging ring is moved upwards, the upper extrusion inclined plane can drive the cement paste to move towards the coating pipe so as to improve the force of the cement paste flowing into the exposed section of the spiral groove; when the dredging ring is moved downwards, the lower extrusion inclined plane can drive the cement paste to move towards the coating pipe so as to improve the force of the cement paste flowing into the exposed section of the spiral groove. The technology can ensure that the compactness of the spiral water stopping blade at the pouring position is higher.
Preferably, the filter cylinder is formed by detachably connecting two semicircular filter grooves in the horizontal direction together in a surrounding manner, the dredging ring is formed by splicing two half parts distributed along the radial direction of the dredging ring, at least two supporting legs are respectively arranged on the inner peripheral surface of each half part, the supporting legs are supported on the coating pipe, and the included angle between the two supporting legs is less than 160 degrees. Enabling the filter cartridge to be easily installed and removed from the coated tube. The dredging ring is not easy to separate.
Preferably, the end face of one half part is provided with a jack, the end face of the other half part is provided with a bolt, the bolt is inserted into the jack, each half part is provided with a supporting leg which is parallel to the bolt, and the bolts at the two connecting parts of the two half parts are parallel. A reliable connection of the two halves of the pull through ring can be achieved in a compact manner.
Preferably, one circumferential ends of the two filter tanks are hinged together through hinges, the other circumferential ends of the two filter tanks are provided with connecting lugs with connecting holes, fixing screws penetrate through the connecting holes and are in threaded connection with connecting nuts to fix the other circumferential ends of the two filter tanks together, and the hinges and the connecting lugs are located outside the filter tanks.
The invention has the following beneficial effects: when the water-stopping pipe penetrates through the floor slab, the spiral water-stopping blade which is poured in the peripheral surface of the pipe and extends along the circumferential direction of the pipe can be formed on the floor slab, so that the floor slab is not easy to leak from the joint of the pipe; the surface smoothness of the part of the pipe positioned outside the floor slab can be still maintained while the anti-leakage effect is improved; the pipe is integrally formed with a spiral groove in advance, and then the tearing line is embedded and covered by the coating, so that the smoothness of the outer pipe of the pipe is not damaged due to the existence of the spiral groove, and the convenience in forming the spiral groove at the inner part of the floor slab part in use can be improved; when the floor slab is poured, only cement paste in concrete enters the vicinity of the periphery of the pipe, so that the compactness of the spiral water stopping blade can be improved, and the phenomenon that the waterproof effect is reduced due to the fact that holes are formed in the spiral water stopping blade due to blockage of particles (sand) is avoided; the blockage of the reverse cylinder can be avoided; the design of extrusion guide ring for it is laborsaving just be difficult to produce the phenomenon that the filter orifice of cartridge filter was made up with the particulate matter when reciprocating the mediation ring.
Drawings
FIG. 1 is a schematic cross-sectional view of a coated pipe;
FIG. 2 is a schematic view of the coated pipe after removal of the coating;
FIG. 3 is an enlarged partial schematic view at E of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the coated pipe after removal of the coating;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic view of the coated pipe ready for installation with a floor slab;
FIG. 7 is an enlarged partial schematic view at B of FIG. 6;
FIG. 8 is a cross-sectional schematic view of a coated pipe installation tool;
FIG. 9 is a schematic top view of a coated pipe installation tool;
FIG. 10 is an enlarged partial schematic view at C of FIG. 9;
FIG. 11 is a schematic view of the coated pipe and the floor slab when they are joined together;
fig. 12 is a partially enlarged schematic view of fig. 11 at D.
In the figure: the device comprises a metal pipe 1, a coating 2, a spiral groove 3, a tear line 4, a resistance reducing groove 5, a bottom wall 6 of the spiral groove, a sealing part 7 of the tear line and the side wall of the spiral groove, a feed guide groove 8, a plane 9 determined by the boundary line of the side wall of the feed guide groove and the outer peripheral surface of the metal pipe and the central line of the metal pipe, a feed guide groove side wall 10, a exposed section 11 of the spiral groove, a mold 12, a floor slab 13, a spiral water stopping blade 14, a spiral resistance increasing strip 15, a filter cylinder 16, a cement cylinder 17, particulate matters 18, a dredging ring 19, an upper extrusion guide ring 20, a lower extrusion guide ring 21, a grouting pressure increasing ring 22, an upper extrusion inclined plane 23, a lower extrusion inclined plane 24, a filter groove 25, a hinge 26, a connecting lug 27, a fixing screw 28, a connecting nut 29, a half part 30, a jack 31, a plug pin 32, a driving rod 33, a supporting leg 34 and a filter hole 35.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 11, a coated pipe includes a metal pipe 1 and a coating layer 2 covering a surface of the metal pipe. The outer circumferential surface of the metal pipe is provided with a spiral groove 3 which spirally extends along the circumferential direction of the metal pipe, a tearing line 4 which extends from one end of the spiral groove to the other end is arranged in the spiral groove, and the tearing line is covered by the coating. The tear line is completely accommodated in the spiral groove. The finish of the outer surface of the coating is greater than four. The tearing line and the two side walls of the spiral groove are in sealing and abutting connection. The tear line is a metal line. Two side walls of the spiral groove are provided with resistance reducing grooves 5 extending along the extension direction of the spiral groove, and the resistance reducing grooves are positioned between the bottom wall 6 of the spiral groove and the sealing part 7 of the tearing line and the side wall of the spiral groove. The cross section of the tearing line is in a trapezoid shape with one end being wide and the other end being narrow towards the opening of the spiral groove, the opening of the cross section of the spiral groove is in the trapezoid shape, and the tearing line and the side wall of the spiral groove are in surface contact, sealing and abutting connection. The peripheral surface of the metal tube is provided with a feed guide groove 8 extending along the axial direction of the metal tube. The depth of the feed guide groove is greater than that of the spiral groove. Two planes where the two side walls of the feed guide groove are positioned are parallel, and the included angle between the plane 9 defined by the boundary line of the side wall of the feed guide groove and the peripheral surface of the metal pipe and the central line of the metal pipe and the plane where the side wall 10 of the feed guide groove is positioned is 10-45 degrees.
The method for installing the coating pipe which connects the coating pipe with the building in a mode of penetrating through the floor slab comprises the following steps: firstly, forming a spiral groove exposed section: the two ends of the part of the tearing line, which is positioned in the floor slab, of the coating pipe are disconnected with the tearing line to form a tearing line taking-out section, and the coating covering the tearing line taking-out section is torn by the tearing line taking-out section when the tearing line taking-out section is taken out, so that the part of the spiral groove, which is originally used for accommodating the tearing line taking-out section, forms a spiral groove exposed section 11; secondly, the coating pipe is arranged at a set place in a vertical state; thirdly, building a mould 12 for pouring the floor slab; fourthly, pouring a floor slab: and (3) pouring concrete in the mould, forming a floor slab 13 after the concrete is cured, pouring the floor slab and the coating pipe together, and forming the spiral water stopping blade 14 extending along the circumferential direction of the coating pipe by the concrete penetrating into the exposed section of the spiral groove and curing. And in the fourth step, concrete is filled into the resistance reducing groove and is solidified to form two spiral resistance increasing strips 15 which are positioned at two sides of the spiral water stopping blade in the thickness direction and have the same extending direction with the spiral water stopping blade. The mould is further provided with a filter cylinder 16 sleeved on the coating pipe, concrete in the fourth step is poured outside the filter cylinder, cement paste in the concrete penetrates through a filter hole of the filter cylinder and enters the interior of the filter cylinder, the cement paste entering the filter cylinder flows into the exposed section of the spiral groove and is cured to form a spiral water stopping blade, the cement paste in the filter cylinder is cured to form a cement paste cylinder 17, particles 18 (sand) in the concrete are blocked outside the filter cylinder, and the filter cylinder is taken out of the concrete before the concrete is cured. Be equipped with the mediation ring 19 that extends along cartridge filter circumference in the cartridge filter, the outer peripheral face of mediation ring is in the same place with the inner peripheral surface butt of cartridge filter, and the concrete reciprocates the mediation ring and will block up the particulate matter top that stretches into in the cartridge filter in the filtration pore 35 of cartridge filter and one end in the fourth step when pouring in the mould and get back to the cartridge filter outside. The upper end of mediation ring is equipped with extrusion guide ring 20, and the external diameter of going up extrusion guide ring diminishes from making progress gradually down, and the lower extreme of mediation ring is equipped with down extrudes guide ring 21, and the external diameter of extrusion guide ring is from making progress grow gradually down. Be equipped with on the inner peripheral surface of mediation ring along the grout pressure intensifying ring 22 that mediation ring circumference extends, be equipped with between the up end of grout pressure intensifying ring and the inner peripheral surface along the last extrusion inclined plane 23 that mediation ring circumference extends, go up the extrusion inclined plane and incline to the center of mediation ring up, be equipped with between lower terminal surface of grout pressure intensifying ring and the inner peripheral surface along the lower extrusion inclined plane 24 that mediation ring circumference extends, the center slope of lower extrusion inclined plane orientation mediation ring. The filter cartridge is formed by two semicircular filter grooves 25 along the horizontal direction which are detachably connected together in a surrounding way, specifically: one circumferential ends of the two filter tanks are hinged together through a hinge 26, the other circumferential ends of the two filter tanks are provided with connecting lugs 27 with connecting holes, fixing screws 28 penetrate through the connecting holes and are in threaded connection with connecting nuts 29 to fix the other circumferential ends of the two filter tanks together, and the hinge and the connecting lugs are located outside the filter tanks. The dredging ring is formed by splicing two half parts 30 distributed along the radial direction of the dredging ring, and the inner peripheral surface of each half part is respectively provided with at least two supporting feet 34, namely three supporting feet in the embodiment. When in use, the supporting legs are supported on the coating pipe, and the included angle between the two supporting legs is less than 160 degrees. The end face of one half part is provided with a jack 31, the end face of the other half part is provided with a bolt 32, the bolt is inserted into the jack, each half part is provided with a supporting leg which is parallel to the bolt, and the bolts at the two connecting parts of the two half parts are parallel. The supporting legs are connected with vertical driving rods 33. In the first step, both ends of the tear line removal section are cut off from the tear line by entering the chisel from the feed guide groove to remove the tear line and thereby cutting off the tear line. The first step of taking out the tear line taking-out section includes prying only one end of the tear line taking-out section to pry up one end of the tear line taking-out section to extend out of the coating, fixing one end of the tear line taking-out section extending out of the coating, and pulling the tear line taking-out section to take out the tear line taking-out section from the spiral groove; the end of the tear line removal section that is pried up is the end that is inclined toward the bottom wall of the spiral groove when not pried up.
Claims (10)
1. The coated pipe comprises a metal pipe and a coating covering the surface of the metal pipe, and is characterized in that a spiral groove spirally extending along the circumferential direction of the metal pipe is arranged on the outer circumferential surface of the metal pipe, a tearing line extending from one end of the spiral groove to the other end of the spiral groove is arranged in the spiral groove, and the coating covers the tearing line.
2. The coated pipe of claim 1 wherein the tear line sealingly abuts both sidewalls of the helical groove.
3. The coated pipe of claim 2 wherein the helical groove has resistance-reducing grooves extending along the direction of the helical groove on both sidewalls thereof, the resistance-reducing grooves being located between the bottom wall of the helical groove and the seal between the tear line and the sidewall of the helical groove.
4. A coated pipe according to claim 1, 2 or 3 wherein the outer peripheral surface of the metal pipe is provided with a feed guide groove extending in the axial direction of the metal pipe, and the feed guide groove is filled with the coating.
5. A coated pipe installation process suitable for use with the coated pipe of claim 1, wherein in a first step, the exposed section of the spiral groove is formed: the two ends of the part of the tearing line, which is positioned in the floor slab, of the coating pipe are disconnected with the tearing line to form a tearing line taking-out section, and the coating covering the tearing line taking-out section is torn by the tearing line taking-out section when the tearing line taking-out section is taken out, so that the part of the spiral groove, which is originally used for accommodating the tearing line taking-out section, forms a spiral groove exposed section; secondly, the coating pipe is arranged at a set place in a vertical state; thirdly, building a mould for pouring the floor slab; fourthly, pouring a floor slab: and pouring concrete in the mould, forming a floor slab after the concrete is cured, pouring the floor slab and the coating pipe together, and forming the spiral water stopping blade extending along the circumferential direction of the coating pipe by the concrete penetrating into the exposed section of the spiral groove and curing.
6. The method for installing a coated pipe according to claim 5, wherein the concrete in the fourth step is further filled into the resistance-reducing grooves to be cured to form two spiral resistance-increasing strips which are positioned on both sides of the spiral water-stopping blade in the thickness direction and have the same extending direction as the spiral water-stopping blade.
7. The method for installing the coated pipe as claimed in claim 5, wherein the mold is further provided with a filter cylinder sleeved on the coated pipe, the concrete in the fourth step is poured outside the filter cylinder, cement paste in the concrete enters the interior of the filter cylinder through the filter holes of the filter cylinder, the cement paste entering the filter cylinder flows into the exposed sections of the spiral grooves to be solidified to form the spiral water stopping blades, the cement paste in the filter cylinder is solidified to form a cement paste cylinder, particles in the concrete are stopped outside the filter cylinder, and the filter cylinder is taken out of the concrete before the concrete is solidified.
8. The method of claim 7, wherein a dredging ring extending along the circumference of the filter cartridge is provided in the filter cartridge, the outer circumferential surface of the dredging ring abuts against the inner circumferential surface of the filter cartridge, and in the fourth step, the dredging ring is moved up and down when the concrete is poured into the mold to eject the particles, which are blocked in the filter holes of the filter cartridge and one end of which protrudes into the filter cartridge, back to the outside of the filter cartridge.
9. The coated pipe installation method according to claim 8, wherein the upper end of the dredge ring is provided with an upper extrusion guide ring, the outer diameter of which is gradually smaller from the bottom to the top, and the lower end of the dredge ring is provided with a lower extrusion guide ring, the outer diameter of which is gradually larger from the bottom to the top.
10. The method for installing the coated pipe according to claim 8, wherein the inner circumferential surface of the dredging ring is provided with a grouting pressurizing ring extending along the circumferential direction of the dredging ring, an upper extrusion inclined surface extending along the circumferential direction of the dredging ring is arranged between the upper end surface and the inner circumferential surface of the grouting pressurizing ring, the upper extrusion inclined surface is inclined upwards towards the center of the dredging ring, a lower extrusion inclined surface extending along the circumferential direction of the dredging ring is arranged between the lower end surface and the inner circumferential surface of the grouting pressurizing ring, and the lower extrusion inclined surface is inclined downwards towards the center of the dredging ring.
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