CN111503419B - Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method - Google Patents
Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method Download PDFInfo
- Publication number
- CN111503419B CN111503419B CN202010351711.9A CN202010351711A CN111503419B CN 111503419 B CN111503419 B CN 111503419B CN 202010351711 A CN202010351711 A CN 202010351711A CN 111503419 B CN111503419 B CN 111503419B
- Authority
- CN
- China
- Prior art keywords
- expansion
- ring
- stainless steel
- pipeline
- half ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 25
- 239000010935 stainless steel Substances 0.000 title claims abstract description 25
- 239000010865 sewage Substances 0.000 title claims abstract description 15
- 238000009412 basement excavation Methods 0.000 title abstract description 4
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 230000002262 irrigation Effects 0.000 claims abstract description 20
- 238000003973 irrigation Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000005077 polysulfide Substances 0.000 claims abstract description 7
- 229920001021 polysulfide Polymers 0.000 claims abstract description 7
- 150000008117 polysulfides Polymers 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000007788 roughening Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000565 sealant Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 102100037978 InaD-like protein Human genes 0.000 description 2
- 101150003018 Patj gene Proteins 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/04—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening internal, i.e. with spreading action
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to a construction method for repairing a non-excavation stainless steel expansion ring joint of an underground sewage pipeline, wherein three layers of internal sealing modes of epoxy resin grouting material, polysulfide anticorrosive sealant and a butyl rubber plate adopt grouting, smearing and mounting modes, and are all fast mounting modes, so that the repairing method has the advantages that the whole construction period is short while the crack plugging repair is completed, the rubber plate is partially plugged, expansion rings can be prefabricated in batches, and the whole cost is low. The irrigation test is beneficial to checking and repairing effect, and can be adjusted in time if the effect is not ideal.
Description
Technical Field
The invention relates to the technical field of pipeline repair, in particular to a non-excavation stainless steel expansion ring joint repairing construction method for an underground sewage pipeline.
Background
At present, along with the development of modern towns and the increase of urban population, the sewage discharge amount generated by people in daily life is continuously increased, and in addition, as the use time of an early sewage pipeline is longer, all parts in the pipeline are aged gradually, the leakage condition caused by the corrosion of sewage in the pipeline is more serious, and the normal operation of a drainage system is greatly influenced.
In order to solve the problems, the trenchless repair construction technology of the pipeline is more and more, wherein the cured lining repair technology, the segment lining repair technology, the u-shaped thin-wall HDPE pipe repair technology, the CIPP overturning repair technology and the like are commonly used and have better economic benefits.
The above prior art solutions have the following drawbacks: in the above-mentioned techniques, the leakage of the pipe from the inside of the pipe is basically stopped by using the reinforcing lining material, and in the above-mentioned local reinforcing method, although the development of the pipe leakage situation is temporarily slowed down, water may permeate into the inside of the pipe from the inner wall of the pipe and the reinforcing lining because the reinforcing lining is not tightly attached to the pipe, and the method of using the large-area reinforcing lining to reduce the failure of the reinforcing lining to be tightly attached to the pipe (for example, CIPP inversion repair technique) has high material and mechanical equipment costs, so there is room for improvement.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the underground sewage pipeline trenchless stainless steel expansion annular joint repairing construction method which has the characteristics of simple process and short construction period while having better local plugging capability, and the overall construction cost is reduced.
The above object of the present invention is achieved by the following technical solutions:
the underground sewage pipeline trenchless stainless steel expansion ring joint repairing construction method comprises the following steps:
the method comprises the following steps: construction preparation, including sewage regulation, leakage point confirmation and garbage cleaning at the leakage point;
step two: roughening the crack, namely roughening and expanding the leakage point, and cleaning the crack after expansion;
step three: high-pressure grouting: embedding a nylon reinforced grouting pipe in a groove of a leakage point, embedding and leveling a crack of a pipe opening by using instant cement, and pressing epoxy resin grouting material which is determined in advance and prepared according to a mixing ratio into the groove by pressurizing by a special high-pressure grouting pump;
step four: smearing the sealing glue, cleaning the to-be-repaired area of the pipeline to ensure that the base surface is kept clean and flat, and embedding the double-part polysulfide anticorrosive sealing glue with the determined mixing proportion into the gap by using a spatula;
step five: installing a rubber plate, cutting a butyl rubber plate in advance for later use, installing the butyl rubber plate at a leakage point, and aligning the rubber plate with a gap at the leakage point in the middle;
step six: expanding the stainless steel expansion ring, namely installing the stainless steel expansion ring which is prefabricated in advance and provided with a clamping part and an expansion part on one side of the butyl rubber plate, far away from the pipe wall, increasing the diameter of the expansion ring through the expansion part by the expansion ring, and enabling the expansion ring and the rubber plate to be tightly attached to the inner wall of the pipeline;
step seven: the irrigation test is that after the pipeline is repaired and reaches a certain strength, irrigation inspection is carried out, the speed is kept constant and cannot be too fast during irrigation, the condition of water leakage or serious water seepage at the repaired part is inspected at any time along two sides of the pipeline in the irrigation process, the irrigation is stopped immediately after the leakage condition still appears after the repair is found, water is pumped outwards, the water level in the pipeline is lower than the leakage point, secondary repair is carried out immediately, and the irrigation inspection is continued after the repair is finished until no leakage exists when the pipeline is full.
By adopting the technical scheme, the crack is expanded and roughened, so that the contact area and the connection strength between the epoxy resin grouting material and the gap of the leakage point can be improved, and the sealing performance between the epoxy resin grouting material and the gap and the performance of resisting external water pressure can be improved. The double polysulfide anticorrosive sealant is favorable for further improving the waterproof performance of the slot and is convenient for the lamination of the rubber plates. The rubber plate is cut into a long strip shape, then annularly laid along the inner side surface of the pipeline, and aligned with the leakage point in the middle. Expand through the stainless steel ring that expands rubber slab, be favorable to exerting pressure to the rubber slab through increase self diameter, make the rubber slab support tight pipeline inside wall and take place deformation to fill up the gap between rubber slab and the pipeline lateral wall, play and strengthen waterproof effect. Wherein the expansion ring adopts the stainless steel material that has anticorrosive property, lasts and stays in the pipeline also can have comparatively lasting life. The epoxy resin grouting material, the polysulfide anticorrosive sealant and the butyl rubber plate are all installed in a rapid mode by adopting three-layer internal sealing modes of grouting, smearing and installing, so that the overall construction period of the repairing method is short, the rubber plates are partially plugged, expansion rings can be prefabricated in batches, and the overall cost is low. The irrigation test is beneficial to checking and repairing effect, and can be adjusted in time if the effect is not ideal.
The present invention in a preferred example may be further configured to: the expanding ring comprises a first half ring and a second half ring, the first half ring and the second half ring are in clamping fit through a clamping part, the clamping part comprises a socket end fixed at one end of the first half ring, an opening is formed in the socket end, and the expanding ring further comprises a plug-in connector fixed at one end of the second half ring and matched with the opening in shape.
Through adopting above-mentioned technical scheme, be favorable to transferring to waiting to restore the pipeline with the expansion ring and divide into first semi-ring and second semi-ring, rethread buckle portion socket joint cooperation realizes quick installation to exert pressure to the junction of first semi-ring and second semi-ring when expanding because the expansion ring, thereby make the difficult separation of joint cooperation between first semi-ring and the second semi-ring.
The present invention in a preferred example may be further configured to: the expansion part comprises expansion heads respectively fixed at the other ends of the first half ring and the second half ring, one side of the end part of any one expansion head close to the pipe wall is provided with two groups of expansion ports, the two groups of expansion ports are symmetrically distributed at the two sides of the expansion head, and the expansion ports opposite to the two groups of expansion heads are combined to form a plug-in port; the expansion part further comprises two groups of expansion plates which are used for being connected with the inserting port in an inserting mode, the two groups of expansion heads are gradually far away from each other when the expansion plates are connected with the inserting port in an inserting mode, and a clamping structure is arranged between the expansion plates and the expansion heads.
Through adopting above-mentioned technical scheme, the portion of expanding includes two sets of interfaces that form by four groups of the mouth that expands of two sets of expansion heads, and two sets of interfaces are along the cross-section symmetric distribution that expands the expander ring, and when two sets of expansion plates were pegged graft with two sets of interfaces respectively and are joined in marriage, the expansion plate promoted two sets of expansion heads to the direction of keeping away from each other to realize the effect of increase expansion ring diameter, realize compressing tightly the rubber slab. Wherein the clamping structure is arranged to keep the expansion plate and the expansion head connected with each other, so that the expansion ring continuously applies pressure to the rubber plate.
The present invention in a preferred example may be further configured to: the clamping structure comprises first clamping teeth which are obliquely arranged at the expansion opening, and the first clamping teeth on two sides of the same expansion head are symmetrically distributed, so that the end part of the expansion head, far away from the clamping part, is sharp; the expansion plate is symmetrically provided with two rows of second clamping teeth which are obliquely arranged, the distance between the two groups of second clamping teeth is gradually increased from the plug-in end to the other end, and the second clamping teeth are in clamping fit with the first clamping teeth when the expansion plate is plugged with the plug-in port.
Through adopting above-mentioned technical scheme, the joint structure is including being located the first latch on the expansion head and being located the second latch on the expansion plate, because the interval between two sets of second latches of expansion plate increases gradually to the other end from the grafting end, thereby can make the expansion head of first semi-ring and the expansion head of second semi-ring move to the direction of keeping away from each other through the inclined plane direction at the process that expansion plate and interface pegging graft, and the tooth of first latch and second latch is the right-angled structure of unilateral circular arc unilateral, play the spacing effect of unidirectional motion, can not reverse motion after making expansion plate and two sets of expansion head joint cooperations, keep the pressure of expansion ring to the rubber slab.
The present invention in a preferred example may be further configured to: the first half ring and the second half ring are made of elastic materials, and the first half ring and/or the second half ring are/is provided with a telescopic device.
By adopting the technical scheme, the first half ring and/or the second half ring are/is provided with the telescopic devices, so that the length of the first half ring and/or the second half ring can be adjusted, the maximum diameter of the expansion ring formed by connecting the first half ring and the second half ring can be adjusted, and the expansion ring is suitable for pipelines with different inner diameters.
The present invention in a preferred example may be further configured to: first semi-ring and/or second semi-ring middle part are cut off for main part and vice portion, the telescoping device is including seting up the spout that main part and vice portion are close to pipe wall one side, be provided with the extension arc board between main part and the vice portion, the both ends of extension arc board the spout joint of main part and vice portion slides, the both ends of extension arc board all be provided with positioner between main part and the vice portion.
Through adopting above-mentioned technical scheme, first semi-ring and second semi-ring middle part cut off and form main part and vice portion, connect through the extension arc board between main part and the vice portion, extension arc board both ends respectively with main part and vice portion sliding connection to through the difference of adjusting the fixed position between the both ends of extension arc board and main part and the vice portion, can realize the regulation of the length of first semi-ring and second semi-ring, and then realize the regulation to whole expander ring radius, have stronger adaptability.
The present invention in a preferred example may be further configured to: the positioning device comprises a plurality of positioning holes which are arranged at equal intervals and penetrate through the main part and the auxiliary part, inserting holes are arranged at corresponding positions of the extension arc plates in a penetrating mode, and bolts are inserted into the positioning holes and the inserting holes together.
Through adopting above-mentioned technical scheme, just right with different locating holes through slip arc to jack to peg graft jack and locating hole through the bolt, thereby realize the effect with arc and main part or vice quick connect.
The present invention in a preferred example may be further configured to: the side face of the extension arc plate close to the pipe wall is coplanar with the side faces of the main portion and the auxiliary portion close to the pipe wall, and the sum of the lengths of the sliding grooves of the main portion and the auxiliary portion is equal to the length of the extension arc plate.
Through adopting above-mentioned technical scheme, thereby the side that will prolong the arc board and be close to the pipe wall and main part, vice portion are close to the side coplane of pipe wall and are favorable to keeping the level and smooth of expanding ring outer peripheral face, can carry out comparatively even support to the rubber slab to keep the integrality of rubber slab shape, be favorable to improving the laminating degree between rubber slab and the pipe wall. The sum of the lengths of the sliding grooves of the main portion and the auxiliary portion is equal to the length of the extension arc plate, so that when the main portion and the auxiliary portion are attached, the extension arc plate completely covers the sliding grooves, and the diameter of the expansion ring is the smallest.
In conclusion, the invention has the following beneficial effects:
1. the stainless steel expansion ring joint technology adopted in the construction method has simple construction steps, the construction operation is easy to operate, the pipeline water leakage condition caused by the aging of a water stop belt, the pipeline crack or the pipe joint dislocation is greatly improved by the three-layer internal sealing mode of the epoxy resin grouting material, the polysulfide anticorrosion sealant and the butyl rubber plate and the rigid tightening of the stainless steel expansion ring to the rubber plate, the service life of the repaired pipeline is obviously prolonged due to the fact that all used materials are made of anticorrosion materials, the overall construction cost is low, the comprehensive cost is saved by about 30% compared with other local pipeline repairing technologies, and the economic benefit is higher;
2. the expansion ring comprises the first half ring and the second half ring with adjustable lengths, so that a user can conveniently convey the expansion ring into a pipeline to be repaired, the overall diameter of the expansion ring is wider in adjustment range, and the expansion ring can be adapted to a pipe to be repaired within a certain diameter range.
Drawings
FIG. 1 is a schematic cross-sectional view of the present embodiment;
FIG. 2 is a schematic view of the expander of the present embodiment;
FIG. 3 is a partial structural solid view of the expander in this embodiment;
fig. 4 is a schematic structural view of the expanded ring of the present embodiment after the diameter thereof is increased.
Reference numerals: 1. a pipeline; 11. cracking; 2. a rubber plate; 3. an expansion ring; 31. a fastening part; 32. an expansion section; 33. a first half ring; 331. a spigot-and-socket end; 332. an opening; 34. a second half ring; 341. a plug-in connector; 35. an expansion head; 351. expanding the opening; 352. a first latch; 36. an expansion plate; 361. a second latch; 41. a main section; 42. a secondary portion; 43. a chute; 44. extending the arc plate; 441. a jack; 45. positioning holes; 46. and (4) bolts.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 2, the invention discloses a construction method for repairing the joint of a trenchless stainless steel expander 3 of an underground sewage pipeline 1, which comprises the following steps:
the method comprises the following steps: construction preparation, including sewage regulation, leakage point confirmation and garbage cleaning at the leakage point;
step two: roughening the crack 11, performing roughening and joint expanding on a leakage point, and cleaning the crack 11 after joint expanding;
step three: high-pressure grouting: embedding a nylon reinforced grouting pipe in a groove of a leakage point, embedding, compacting and leveling a pipe orifice crack 11 by using instant cement, and pressing epoxy resin grouting material which is determined in advance and prepared according to a mixing ratio into the groove by pressurizing through a special high-pressure grouting pump;
step four: plastering the surface of the sealant, cleaning the to-be-repaired area of the pipeline 1 to ensure that the base surface is kept clean and flat, and embedding the double-part polysulfide anticorrosive sealant with the determined mixing ratio into the gap by using a spatula;
step five: installing a rubber plate 2, cutting a butyl rubber plate 2 in advance for later use, installing the butyl rubber plate 2 at a leakage point, and aligning the rubber plate 2 with a gap at the leakage point in the middle; the rubber plate 2 is laid in a ring shape along the inner circumferential surface of the pipeline 1;
step six: expanding the stainless steel expansion ring 3, mounting the stainless steel expansion ring 3 which is prefabricated in advance and is provided with a clamping part 31 and an expansion part 32 on one side of the butyl rubber plate 2, which is far away from the pipe wall, increasing the diameter of the expansion ring 3 by the expansion part 32 through the expansion ring 3, and tightly attaching the expansion ring 3 and the rubber plate 2 to the inner wall of the pipeline 1;
step seven: the irrigation test is that the irrigation inspection is carried out after the pipeline 1 is repaired and reaches a certain strength, the speed is kept constant and cannot be too fast when irrigation is carried out, the condition of water leakage or serious water seepage at the repaired part is inspected at any time along two sides of the pipeline 1 in the irrigation process, the irrigation is stopped immediately after the leakage condition still appears after the repair is found, water is pumped outwards, the water level in the pipeline is lower than the leakage point, the secondary repair is carried out immediately, the irrigation inspection is continued after the repair is finished until no leakage exists when the pipeline is full.
As shown in fig. 2 to 4, the expander ring 3 includes a first half ring 33 and a second half ring 34, the first half ring 33 and the second half ring 34 are engaged with each other by a locking portion 31, the locking portion 31 includes a socket end 331 fixed at one end of the first half ring 33, the socket end 331 is provided with an opening 332, and further includes a plug 341 fixed at one end of the second half ring 34 and matched with the opening 332 in shape. The expansion part 32 comprises expansion heads 35 respectively fixed at the other ends of the first half ring 33 and the second half ring 34, and the two groups of expansion heads 35 have the same shape. Two groups of expansion openings 351 are formed in one side, close to the pipe wall, of the end part of any expansion head 35, the two groups of expansion openings 351 are symmetrically distributed on two sides of the expansion head 35 in the length direction, the expansion openings 351, which are opposite to the two groups of expansion heads 35, are combined to form a plug-in interface, and the plug-in interface is in an opening shape with a large outside and a small inside; the expansion part 32 further comprises two groups of expansion plates 36 which are used for being connected with the insertion ports in an inserting mode, when the expansion plates 36 are connected with the insertion ports in an inserting mode, the two groups of expansion heads 35 are gradually far away from each other, and a clamping structure with one-way motion is arranged between the expansion plates 36 and the expansion heads 35.
The clamping structure comprises first clamping teeth 352 which are obliquely arranged at the expansion opening 351, and the first clamping teeth 352 on two sides of the same expansion head 35 are symmetrically distributed, so that the end part of the expansion head 35, far away from the clamping part 31, is sharp; the expansion plate 36 is symmetrically provided with two rows of second latch 361 which are obliquely arranged, the distance between the two groups of second latch 361 is gradually increased from the plug-in end to the other end, and the second latch 361 and the first latch 352 are in clamping fit when the expansion plate 36 is plugged in the plug-in port. And the teeth of the first latch 352 and the second latch 361 are both of structures with single-side circular arcs and single-side right angles, so that the effect of one-way movement limitation is achieved, the expansion plate 36 and the two groups of expansion heads 35 cannot move reversely after being clamped and matched, and the pressure of the expansion ring 3 on the rubber plate 2 is kept.
Wherein two sets of expansion plates 36 all run through and have just right through-hole, when two sets of expansion plates 36 all peg graft with the interface, through passing two sets of through-holes that expand plates 36 with bolt 46, can be close to the motion each other through rotating two sets of expansion plates 36 of bolt 46 and nut drive, realize with the grafting of interface, also be favorable to more laborsaving when strutting expansion ring 3, also be favorable to carrying out the continuous connection to two sets of expansion plates 36 in daily use, keep the state that expansion plate 36 and interface peg graft.
The first half ring 33 and the second half ring 34 are made of elastic stainless steel, and the first half ring 33 and/or the second half ring 34 are/is provided with a telescopic device. The middle of the first half ring 33 and/or the second half ring 34 is divided into a main part 41 and a secondary part 42, the telescopic device comprises a sliding groove 43 which is arranged on one side of the main part 41 and the secondary part 42 close to the pipe wall, an extension arc plate 44 is arranged between the main part 41 and the secondary part 42, and the arc plate is also made of elastic stainless steel materials. The main part 41 and the auxiliary part 43 at the two ends of the extension arc plate 44 are clamped and slide, the side surface of the extension arc plate 44 close to the pipe wall is coplanar with the side surfaces of the main part 41 and the auxiliary part 42 close to the pipe wall, and the sum of the lengths of the main part 41 and the auxiliary part 42 and the length of the extension arc plate 44 are equal. Positioning devices are arranged between the main portion 41 and the auxiliary portion 42 at two ends of the extension arc plate 44, each positioning device comprises a plurality of positioning holes 45 which penetrate through the main portion 41 and the auxiliary portion 42 at equal intervals, insertion holes 441 penetrate through corresponding positions of the extension arc plate 44, and bolts 46 are inserted into the positioning holes 45 and the insertion holes 441 in a common mode.
The implementation principle of the embodiment is as follows:
as shown in fig. 3 to 4, when repairing pipes 1 with different diameters, the first half ring 33 and the second half ring 34 are separated and transported into the pipe 1, the distance between the main portion 41 and the sub portion 42 of the first half ring 33 and/or the second half ring 34 is adjusted by estimating the diameter of the pipe 1, and then the extension arc plate 44 is fixedly connected with the main portion 41 and the sub portion 42 by the bolt 46, so that the diameter of the expansion ring 3 is adjusted, and the function of adapting to pipes 1 with different diameters is achieved. And then the expansion plate 36 is inserted to tightly support the expansion ring 3 and the side wall of the pipeline 1, so that the rubber plate 2 is tightly supported.
The length of the first half ring 33 and/or the second half ring 34 can be adjusted conveniently by the arrangement of the telescopic device, so that the diameter of the expansion ring 3 can be adjusted, and the expansion ring is suitable for pipelines 1 with different inner diameter sizes.
Set up the structure of two sets of expander plates 36 to inserting, be favorable to in the grafting expander plate 36, be difficult for making expander ring 3 aversion, can keep just right and the extrusion to the rubber slab 2 of crack 11 department, and through wearing to establish the mode of bolt 46 with two sets of expander plates 36, it is close to two sets of expander plates 36 each other to move bolt 46 through twisting, the thrust that applys expander ring 3 when having further reduced expander plate 36 and interface grafting, be favorable to keeping expander ring 3's location and overall structure's stability, keep the atress balance, reduce the too big condition that makes the material tired of local moment of bending that the slope of expander ring 3 leads to.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. The underground sewage pipeline trenchless stainless steel expansion ring joint repairing construction method is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: construction preparation, including sewage regulation, leakage point confirmation and garbage cleaning at the leakage point;
step two: roughening the crack (11), roughening and expanding the leakage point, and cleaning the crack (11) after expansion;
step three: high-pressure grouting: embedding a nylon reinforced grouting pipe in a groove of a leakage point, embedding, compacting and leveling a pipe opening crack (11) by using instant cement, and pressing epoxy resin grouting material which is determined in advance and prepared according to a mixing ratio into the groove by pressurizing by a special high-pressure grouting pump;
step four: plastering the surface of the sealing glue, cleaning the to-be-repaired area of the pipeline (1) to ensure that the base surface is kept clean and flat, and embedding the double-part polysulfide anticorrosive sealing glue with a determined mixing ratio into the slot by using a spatula;
step five: installing the rubber plate (2), cutting the butyl rubber plate (2) in advance for later use, installing the butyl rubber plate (2) at a leakage point, and aligning the rubber plate (2) with a gap at the leakage point in the middle;
step six: expanding the stainless steel expansion ring (3), mounting the stainless steel expansion ring (3) which is prefabricated in advance and provided with a clamping part (31) and an expansion part (32) on one side, far away from the pipe wall, of the butyl rubber plate (2), increasing the diameter of the expansion ring (3) through the expansion part (32) by the expansion ring (3), and enabling the expansion ring (3) and the rubber plate (2) to cling to the inner wall of the pipeline (1);
step seven: the method comprises the following steps of (1) performing irrigation test, after the pipeline (1) is repaired and reaches a certain strength, performing irrigation check, wherein the speed is kept constant and cannot be too high during irrigation, the condition of water leakage or serious water seepage at the repaired position is checked at any time along two sides of the pipeline (1) in the irrigation process, immediately stopping irrigation when the leakage condition still occurs after the repair is found, pumping water outwards to enable the water level in the pipeline to be lower than the leakage point, performing secondary repair immediately, and continuing the irrigation check after the repair is completed until no leakage exists when the pipeline is full;
the expansion ring (3) comprises a first half ring (33) and a second half ring (34), the first half ring (33) and the second half ring (34) are in clamping fit through a clamping part (31), the clamping part (31) comprises a socket end (331) fixed at one end of the first half ring (33), an opening (332) is formed in the socket end (331), and the expansion ring further comprises a plug-in connector (341) fixed at one end of the second half ring (34) and matched with the opening (332) in shape;
the first half ring (33) and the second half ring (34) are made of elastic materials, and the first half ring (33) and/or the second half ring (34) are/is provided with a telescopic device.
2. The trenchless stainless steel expansion ring joint repairing construction method of claim 1, wherein: the expansion part (32) comprises expansion heads (35) which are respectively fixed at the other ends of the first half ring (33) and the second half ring (34), one side, close to the pipe wall, of the end part of any one of the expansion heads (35) is provided with two groups of expansion ports (351), the two groups of expansion ports (351) are symmetrically distributed on two sides of the expansion head (35), and the expansion ports (351) which are opposite to the two groups of expansion heads (35) are combined to form a splicing port; the expansion part (32) further comprises two groups of expansion plates (36) which are used for being connected with the insertion ports in an inserting mode, the expansion plates (36) and the insertion ports are gradually far away from each other when the expansion heads (35) are connected in the inserting mode, and a clamping structure is arranged between the expansion plates (36) and the expansion heads (35).
3. The trenchless stainless steel expansion ring joint repairing construction method of claim 2, wherein: the clamping structure comprises first clamping teeth (352) which are obliquely arranged at the expansion opening (351), and the first clamping teeth (352) at two sides of the same expansion head (35) are symmetrically distributed, so that the end part of the expansion head (35) far away from the clamping part (31) is sharp; the expansion plate (36) is symmetrically provided with two rows of obliquely arranged second clamping teeth (361), the distance between the two groups of second clamping teeth (361) is gradually increased from the plug-in end to the other end, and the second clamping teeth (361) are in clamping fit with the first clamping teeth (352) when the expansion plate (36) is plugged with the plug-in port.
4. The trenchless stainless steel expansion ring joint repairing construction method of claim 3, wherein: first semi-ring (33) and/or second semi-ring (34) middle part are cut off for main portion (41) and vice portion (42), telescoping device is including seting up main portion (41) and vice portion (42) are close to spout (43) of pipe wall one side, be provided with extension arc board (44) between main portion (41) and vice portion (42), the both ends of extension arc board (44) spout (43) joint of main portion (41) and vice portion (42) is slided, the both ends of extension arc board (44) all be provided with positioner between main portion (41) and vice portion (42).
5. The underground sewage pipeline trenchless stainless steel expansion ring joint repairing construction method of claim 4, which is characterized in that: the positioning device comprises a plurality of positioning holes (45) which penetrate through the main portion (41) and the auxiliary portion (42) at equal intervals, inserting holes (441) penetrate through corresponding positions of the extension arc plates (44), and bolts (46) are inserted into the positioning holes (45) and the inserting holes (441) together.
6. The trenchless stainless steel expansion ring joint repairing construction method of claim 5, wherein: the side face of the extension arc plate (44) close to the pipe wall is coplanar with the side faces of the main portion (41) and the auxiliary portion (42) close to the pipe wall, and the sum of the lengths of the sliding grooves (43) of the main portion (41) and the auxiliary portion (42) is equal to the length of the extension arc plate (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010351711.9A CN111503419B (en) | 2020-04-28 | 2020-04-28 | Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010351711.9A CN111503419B (en) | 2020-04-28 | 2020-04-28 | Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111503419A CN111503419A (en) | 2020-08-07 |
| CN111503419B true CN111503419B (en) | 2021-06-25 |
Family
ID=71873656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010351711.9A Active CN111503419B (en) | 2020-04-28 | 2020-04-28 | Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111503419B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049219A (en) * | 2020-08-31 | 2020-12-08 | 厦门顶巢建筑修缮研究院有限公司 | Construction method of repairing system for leakage water of sewage pipe network |
| CN113251236B (en) * | 2021-04-28 | 2022-08-30 | 上海海潜市政工程有限公司 | Municipal pipeline repairing process |
| CN113585424B (en) * | 2021-08-11 | 2022-12-23 | 广东德泽建设工程有限公司 | Non-large excavation point-like replacement minimally-invasive repair construction method for municipal rainwater and sewage pipeline |
| CN115076505B (en) * | 2022-06-13 | 2023-03-10 | 广东省怡合建设有限公司 | Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method |
| CN116576332B (en) * | 2023-07-12 | 2023-09-01 | 山东方大新材料科技有限公司 | Pipeline repairing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4927189A (en) * | 1989-04-10 | 1990-05-22 | Burkit John W | Internal expansion coupling device |
| CN1018573B (en) * | 1989-05-17 | 1992-10-07 | 扬州自来水公司 | Rapid and simple method for repairing burst of underwater steel pipe |
| CN1295458C (en) * | 2004-11-26 | 2007-01-17 | 天津市水利科学研究所 | Pipeline leakage blocking device, its production and method thereof |
| CN207132021U (en) * | 2017-03-23 | 2018-03-23 | 安徽恒生科技发展集团有限公司 | Lined pipeline patching device |
| CN109339824A (en) * | 2018-12-04 | 2019-02-15 | 中铁二十四局集团有限公司 | A kind of duct pieces of shield tunnel Treatment Measures to Leakage method |
-
2020
- 2020-04-28 CN CN202010351711.9A patent/CN111503419B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111503419A (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111503419B (en) | Underground sewage pipeline non-excavation stainless steel expansion ring joint repairing construction method | |
| CN213061668U (en) | Connecting assembly for sealing and fastening multi-specification anchor backing plate and corrugated pipe | |
| EP0204445B1 (en) | Plastic pipe coupling apparatus and method of using same | |
| CN211010263U (en) | Drainage pipe seals mechanism for municipal building | |
| CN108506002B (en) | Outer wall template for forming slurry diffusion groove on outer wall surface | |
| CN214116915U (en) | Novel assembled inspection shaft connection structure | |
| CN214116913U (en) | Assembled inspection shaft | |
| CN210424169U (en) | Stainless steel double-expansion ring for local repair of drainage pipeline | |
| CN109237194B (en) | Temporary pipeline plugging device and temporary pipeline plugging method | |
| CN113668607A (en) | Splicing construction method for prefabricated comprehensive pipe gallery | |
| CN117685416B (en) | Water blocking structure and water blocking method suitable for rectangular pipe jacking membrane bag | |
| CN214839266U (en) | Pipeline leak source prosthetic devices | |
| CN118676839A (en) | Electric power pipe-jacking pipe joint connector and use method thereof | |
| CN115289293B (en) | Pipe jacking quick-connect waterproof joint suitable for silt stratum | |
| CN215488170U (en) | Socket joint draw-in groove formula push pipe water joint structure | |
| CN218818568U (en) | Auxiliary device is filled to sleeve pipe clearance concrete | |
| CN220037633U (en) | Assembled large-caliber round jacking pipe | |
| CN219510356U (en) | Municipal pipeline connection structure | |
| CN216555827U (en) | Flange for ocean engineering | |
| CN215568638U (en) | Reinforced concrete spigot-and-socket pipe | |
| CN220204876U (en) | Small-radius curve jacking pipe structure | |
| CN116146802B (en) | Prestressed steel cylinder concrete pipe connecting structure and installation method | |
| JP4390543B2 (en) | Method of joining inner joint pipe joint and expansion jig for joining | |
| CN221645748U (en) | Water stopping structure of hydraulic tunnel plug circumferential contact surface | |
| CN215166670U (en) | Composite water-stopping steel belt with water-swelling water-stopping strip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |