CN103486401A - First-aid repairing method for repairing ductile cast iron pipeline subjected to water leakage - Google Patents
First-aid repairing method for repairing ductile cast iron pipeline subjected to water leakage Download PDFInfo
- Publication number
- CN103486401A CN103486401A CN201310454046.6A CN201310454046A CN103486401A CN 103486401 A CN103486401 A CN 103486401A CN 201310454046 A CN201310454046 A CN 201310454046A CN 103486401 A CN103486401 A CN 103486401A
- Authority
- CN
- China
- Prior art keywords
- repair machine
- repairing
- aid repair
- aid
- cap
- 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.)
- Pending
Links
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
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a first-aid repairing method for repairing a ductile cast iron pipeline subjected to water leakage. A specially-manufactured first-aid repairing device is used for repairing a pipe subjected to water leakage according to specified steps. The first-aid repairing device is provided with two symmetric semicircular shell covers. The left end and the right end of each shell cover are respectively provided with a connection lug, and the connection lugs of the two shell covers are opposite in a pairwise mode. A plurality of bolt holes which correspond to one another are formed in the connection lugs, and the upper end and the lower end of each shell cover are respectively provided with a pressing edge. An annular sealing groove is formed along the inner sides of the connection lugs and the inner sides of the pressing edges of each shell cover, and a sealing rubber ring is arranged between the annular sealing grooves of the two shell covers in a matched mode. A pressure measuring water inlet is formed in the middle of one of the shell covers, and an end cap is arranged at the pressure measuring water inlet in a matched mode. A plurality of reinforcing ribs are arranged on the outer surfaces of the connection lugs of the left ends and the right ends of the shell covers. The first-aid repairing method for repairing the ductile cast iron pipeline subjected to water leakage is simple in structure, convenient to construct, free of detachment, short in construction period, low in cost, and good in sealing effect on a water leakage portion of the pipeline.
Description
Technical field
The present invention relates to the nodular cast iron pipe fittings industry, that especially the ductile iron pipeline leaked is repaired a kind ofly repairs the emergency repair method that ductile iron pipeline leaks.
Background technique
The current ductile iron pipeline generally adopted both at home and abroad leaks repair mode for removing leaking pipe, after the replacing pipeline, reinstalls, and this kind of repair mode process is more loaded down with trivial details, cycle is long, have a strong impact on project progress, and rehabilitation expense is quite high, loses very large.
Summary of the invention
Purpose of the present invention is improved above shortcoming exactly, provides simple in structure, and easy construction need not be dismantled, short construction period, and low a kind of of cost repairs the emergency repair method that ductile iron pipeline leaks.
Concrete scheme of the present invention is: a kind ofly repair the emergency repair method that ductile iron pipeline leaks, it is characterized in that: comprise the following steps:
(1) determine that the length at pipe leakage position is in the sealable scope of first-aid repair machine;
(2) the maximum service pressure of examining first-aid repair machine is greater than pipeline overflow water pressure, is ready to special first-aid repair machine and special-purpose cushion rubber; Described first-aid repair machine is the semicircle cap with two symmetries, the two ends, left and right of two caps are equipped with an engaging lug, the engaging lug of two caps is relative in twos, have the bolt hole of some mutual correspondences on engaging lug, the two ends up and down of two caps are equipped with a flanging, along the inboard of each cap engaging lug and flanging, have a ring shape seal groove, are furnished with an O-ring seal between the annular seal groove of two caps, the middle part of one of them cap has the pressure measurement water intake, and the pressure measurement water intake is furnished with plug;
(3) unload plug, cleaning first-aid repair machine seal groove, correctly lay O-ring seal;
(4) at pipeline repairing position excavation working pit, be convenient to lifting and fastening first-aid repair machine;
(5) the seal ring in first-aid repair machine contacts with the jack tube straight length with the socket pipe straight length, and sealing surface should be smooth smooth, pays special attention to boss moderate;
(6) first put on long screw on four jiaos of two cap docking, the cover upper cap nut, be fastened to suitable height; Other screw puts hex head bolt and nut is prefastened;
(7) unload long screw on four jiaos, change hex head bolt; Clamping bolt should be fastening by the diagonal order, can't single face fastening;
(8) kilogram spanner test for bolt clipping forcee, the 1.2-1.5 that fastening force is working pressure is doubly;
(9) after first-class first-aid repair machine, from the water filling of first-aid repair machine pressure measurement water intake, water starts pressurization, pressurize after filling with, and observes the situation of leaking; Can suitably strengthen the fastening dynamics of screw rod while suppressing infiltration; If continue infiltration, must take refitting apart, check, analyze leakage cause; The hydrostatic test is qualified carries out sign, the first-aid repair machine plug of screwing on.
Described a kind of emergency repair method that ductile iron pipeline leaks of repairing is characterized in that: the engaging lug outer surface at the two ends, cap left and right in described first-aid repair machine is provided with some stiffening ribs.
The present invention is simple in structure, and easy construction need not be dismantled, short construction period, and cost is low, to pipe leakage position good sealing effect.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the plan view of single cap of the present invention;
Fig. 2 is the worm's eye view of the single cap of the present invention;
Fig. 3 is the plan view of the single cap of the present invention;
Fig. 4 is work schematic diagram of the present invention.
In figure, 1-cap, 2-engaging lug, 3-bolt hole, 4-flanging, 5-seal groove, 6-O-ring seal, 7-water intake, 8-plug, 9-stiffening rib, 10-socket pipe straight length, 11-jack tube straight length, 12-leakage area, 13-bolt and nut.
Embodiment
Referring to Fig. 1-4, the present invention is a kind of repairs the emergency repair method that ductile iron pipeline leaks, and comprises the steps: to determine that the length at pipe leakage position 12 is in the sealable scope of first-aid repair machine; The maximum service pressure of examining first-aid repair machine is greater than pipeline overflow water pressure, is ready to special first-aid repair machine and Special seal cushion rubber 6; Described first-aid repair machine is the semicircle cap 1 with two symmetries, the two ends, left and right of two caps 1 are equipped with an engaging lug 2, the engaging lug 2 of two caps 1 is relative in twos, have the bolt hole 3 of some mutual correspondences on engaging lug 2, the two ends up and down of two caps 1 are equipped with a flanging 4, have a ring shape seal groove 5 along the engaging lug 2 of each cap and the inboard of flanging 4, is furnished with an O-ring seal 6 between the annular seal groove 5 of two caps 1, the middle part of one of them cap 1 has pressure measurement water intake 7, and pressure measurement water intake 7 is furnished with plug 8; Engaging lug 2 outer surfaces at described cap 1 two ends, left and right are provided with some stiffening ribs 9; Unload plug 8, cleaning first-aid repair machine seal groove, correctly lay O-ring seal; At pipeline repairing position excavation working pit, be convenient to lifting and fastening first-aid repair machine; In first-aid repair machine, seal ring contacts with jack tube straight length 11 with socket pipe straight length 10, and sealing surface should be smooth smooth, pays special attention to boss moderate; First put on long screw in four jiaos of the docking of two caps, the cover upper cap nut, be fastened to suitable height; Other screw 3 puts hex head bolt and nut 13 is prefastened; Unload long screw on four jiaos, change hex head bolt; Clamping bolt should be fastening by the diagonal order, can't single face fastening; Kilogram spanner test for bolt clipping forcee, the 1.2-1.5 that fastening force is working pressure is doubly; After first-class first-aid repair machine, from 7 water fillings of first-aid repair machine water intake, water starts pressurization, pressurize after filling with, and observes the situation of leaking; Can suitably strengthen the fastening dynamics of screw rod while suppressing infiltration.If continue infiltration, must take refitting apart, check, analyze leakage cause; The hydrostatic test is qualified carries out sign, the first-aid repair machine plug of screwing on.The important technological parameters of first-aid repair machine: the permissible working pressure≤1MPa of different size first-aid repair machine; The maximum of different size first-aid repair machine is repaired length (greatest axial length of body breakage) DN300-600: bellmouth 350, straight tube 300; DN700-1100: bellmouth 600, straight tube 800; DN1200-2200: bellmouth 630, straight tube 940; The specification of connecting bolt and requirement (GB steel high-strength bolt) DN300-600:M27 * 150; DN700-1100:M30 * 170; DN1200-2200:M42 * 220.
Claims (2)
1. repair the emergency repair method that ductile iron pipeline leaks for one kind, it is characterized in that: comprise the following steps:
(1) determine that the length at pipe leakage position is in the sealable scope of first-aid repair machine;
(2) the maximum service pressure of examining first-aid repair machine is greater than pipeline overflow water pressure, is ready to special first-aid repair machine and special-purpose cushion rubber; Described first-aid repair machine is the semicircle cap with two symmetries, the two ends, left and right of two caps are equipped with an engaging lug, the engaging lug of two caps is relative in twos, have the bolt hole of some mutual correspondences on engaging lug, the two ends up and down of two caps are equipped with a flanging, along the inboard of each cap engaging lug and flanging, have a ring shape seal groove, are furnished with an O-ring seal between the annular seal groove of two caps, the middle part of one of them cap has the pressure measurement water intake, and the pressure measurement water intake is furnished with plug;
(3) unload plug, cleaning first-aid repair machine seal groove, correctly lay O-ring seal;
(4) at pipeline repairing position excavation working pit, be convenient to lifting and fastening first-aid repair machine;
(5) the seal ring in first-aid repair machine contacts with the jack tube straight length with the socket pipe straight length, and sealing surface should be smooth smooth, pays special attention to boss moderate;
(6) first put on long screw on four jiaos of two cap docking, the cover upper cap nut, be fastened to suitable height; Other screw puts hex head bolt and nut is prefastened;
(7) unload long screw on four jiaos, change hex head bolt; Clamping bolt should be fastening by the diagonal order, can't single face fastening;
(8) kilogram spanner test for bolt clipping forcee, the 1.2-1.5 that fastening force is working pressure is doubly;
(9) after first-class first-aid repair machine, from the water filling of first-aid repair machine water intake, water starts pressurization, pressurize after filling with, and observes the situation of leaking; Can suitably strengthen the fastening dynamics of screw rod while suppressing infiltration; If continue infiltration, must take refitting apart, check, analyze leakage cause; The hydrostatic test is qualified carries out sign, the first-aid repair machine plug of screwing on.
2. a kind of emergency repair method that ductile iron pipeline leaks of repairing according to claim 1, it is characterized in that: the engaging lug outer surface at the two ends, cap left and right in described first-aid repair machine is provided with some stiffening ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454046.6A CN103486401A (en) | 2013-09-29 | 2013-09-29 | First-aid repairing method for repairing ductile cast iron pipeline subjected to water leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454046.6A CN103486401A (en) | 2013-09-29 | 2013-09-29 | First-aid repairing method for repairing ductile cast iron pipeline subjected to water leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103486401A true CN103486401A (en) | 2014-01-01 |
Family
ID=49826870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310454046.6A Pending CN103486401A (en) | 2013-09-29 | 2013-09-29 | First-aid repairing method for repairing ductile cast iron pipeline subjected to water leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103486401A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085701A1 (en) * | 2004-03-05 | 2005-09-15 | Gekave International B.V. | Device for encasing a pipe section |
| CN2851799Y (en) * | 2005-09-23 | 2006-12-27 | 常州宝硕宏图塑胶有限公司 | Quick leak-stopping joint for pipeline |
| CN200979054Y (en) * | 2006-08-29 | 2007-11-21 | 李志芳 | Straight tube type multifunctional quick-acting first-aid repairing device |
| CN201133546Y (en) * | 2007-12-26 | 2008-10-15 | 上海大众燃气有限公司 | PE pipeline electric melting jacket leakage or PE tube leakage integral plugging type first-aid interface |
| CN101701658A (en) * | 2009-11-20 | 2010-05-05 | 陈建军 | Pipeline urgent repair device |
| CN201764165U (en) * | 2010-06-28 | 2011-03-16 | 中铁电气化局集团有限公司 | Anti-expansion limiting stopper capable of being disassembled quickly |
| CN201795200U (en) * | 2010-07-30 | 2011-04-13 | 武汉达明科技有限公司 | Fixing structure for ductile iron pipeline |
| CN201902745U (en) * | 2010-12-14 | 2011-07-20 | 浙江华水管道科技有限公司 | Connecting piece of ductile cast-iron pipe and branch pipe |
| CN202746841U (en) * | 2012-07-27 | 2013-02-20 | 李巍 | Device for plugging pipeline |
-
2013
- 2013-09-29 CN CN201310454046.6A patent/CN103486401A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085701A1 (en) * | 2004-03-05 | 2005-09-15 | Gekave International B.V. | Device for encasing a pipe section |
| CN2851799Y (en) * | 2005-09-23 | 2006-12-27 | 常州宝硕宏图塑胶有限公司 | Quick leak-stopping joint for pipeline |
| CN200979054Y (en) * | 2006-08-29 | 2007-11-21 | 李志芳 | Straight tube type multifunctional quick-acting first-aid repairing device |
| CN201133546Y (en) * | 2007-12-26 | 2008-10-15 | 上海大众燃气有限公司 | PE pipeline electric melting jacket leakage or PE tube leakage integral plugging type first-aid interface |
| CN101701658A (en) * | 2009-11-20 | 2010-05-05 | 陈建军 | Pipeline urgent repair device |
| CN201764165U (en) * | 2010-06-28 | 2011-03-16 | 中铁电气化局集团有限公司 | Anti-expansion limiting stopper capable of being disassembled quickly |
| CN201795200U (en) * | 2010-07-30 | 2011-04-13 | 武汉达明科技有限公司 | Fixing structure for ductile iron pipeline |
| CN201902745U (en) * | 2010-12-14 | 2011-07-20 | 浙江华水管道科技有限公司 | Connecting piece of ductile cast-iron pipe and branch pipe |
| CN202746841U (en) * | 2012-07-27 | 2013-02-20 | 李巍 | Device for plugging pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202991461U (en) | Fluid end assembly of plunger pump | |
| CN104421568A (en) | T-shaped double-seal leakage stopping clamp for pipeline and processing method | |
| CN103953807A (en) | Socket structure for connecting steel pipes | |
| CN104089824A (en) | Pressure-resisting testing device for large-diameter welding-structure metal pipeline | |
| CN203585706U (en) | T-shaped dual-seal pipeline leaking stoppage clamp | |
| CN106545694B (en) | The installation method of technique of grouted clamp centering and end seal | |
| CN202916152U (en) | Single-bend pressure test device | |
| CN206320446U (en) | A kind of fast connecting device of pipelines | |
| CN108663264B (en) | Device for detecting water pressure in concrete pipe | |
| CN103486401A (en) | First-aid repairing method for repairing ductile cast iron pipeline subjected to water leakage | |
| CN201706134U (en) | Fastener for blocking underwater pipeline | |
| CN106404550B (en) | Valve body strength test tool and test method for sectional bearing of inner cavity | |
| CN204628950U (en) | Drainage pipe blocking device | |
| CN208270324U (en) | Pipe of concrete internal water pressure detection device | |
| CN210484995U (en) | Water conservancy pipeline patching device | |
| CN209991085U (en) | Water channel plugging device | |
| CN210153416U (en) | Hydraulic jack for construction of large-diameter overhead pipeline in river channel | |
| CN203696401U (en) | Rapid connecting centering device for ship shafting flange | |
| CN104613177A (en) | Pipeline end sealing device | |
| CN202916151U (en) | Bend pressure testing device | |
| CN205958374U (en) | Valve hydraulical pressure test apparatus | |
| CN210571242U (en) | Device for rapidly detecting leakage point of air cooler of hydroelectric generating set | |
| CN203717295U (en) | Non-destructive disassembly hydraulic nut | |
| CN104806483A (en) | Hydraulic nut demounted nondestructively and demounting method of hydraulic nut | |
| CN203324111U (en) | Pressure testing device for steel sleeve pipeline connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |