CN105135147A - PCCP accident treating device and installation method thereof - Google Patents
PCCP accident treating device and installation method thereof Download PDFInfo
- Publication number
- CN105135147A CN105135147A CN201510446806.8A CN201510446806A CN105135147A CN 105135147 A CN105135147 A CN 105135147A CN 201510446806 A CN201510446806 A CN 201510446806A CN 105135147 A CN105135147 A CN 105135147A
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- Prior art keywords
- pipe
- pccp
- accident treatment
- telescopic pipe
- socket
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- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 abstract 2
- 230000037431 insertion Effects 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- F16L55/1608—Devices for covering leaks in pipes or hoses, e.g. hose-menders by replacement of the damaged part of the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a PCCP accident treating device. The PCCP accident treating device comprises an accident treating pipe. The structure of the accident treatment pipe is the same as that of a conventional PCCP, and the length of the accident treatment pipe is smaller than that of the conventional PCCP. Sockets are formed in the two ends of the accident treating pipe in the length direction respectively, one socket is a conventional socket matched with an insertion opening in one end of the conventional PCCP, and the other socket is a stretcher end socket matched with an insertion opening of a stretcher. The invention further discloses an installation method for the PCCP accident treating device. When the accident that the PCCP needs to be replaced is treated, rapid and simple treatment can be carried out by means of the PCCP accident treating device and the installation method in the technical scheme.
Description
Technical field
The present invention relates to a kind of pipe technology, especially a kind of PCCP pipeline accident treatment device and installation method thereof.
Background technique
At present, PCCP pipeline at home and abroad gets a lot of applications all, its structure is outside concreting in steel cylinder, high-strength prestressed steel wire is wound around again at outer concrete layer, and protective layer is built in spray, there is investment low, easy for installation, the feature that service life is long, owing to adopting bell and spigot joint, make its speed of application very fast, but in use, once there is fracture in reinforcement wire, then make whole pipe reinforcement wire ineffective, produce booster, socket is accepted again because adopt, common Accident Handling Method is that the replacing one pipe joint period of the day from 11 p.m. to 1 a.m is waited, calculate according to drift angle simultaneously, employ several crane gear, carry out coordinated manipulation, lift the two several pipes in side, new pipe could be put into socket joint position, therefore, once there is accident, retube quite time-consuming and bothersome.
Chinese patent CN203082450U discloses a kind of PCCP engineering accident standby pipes, comprise body, described body one end is provided with socket steel ring, the other end of described body is provided with bellmouth steel loop, slip joint is provided with between described socket steel ring and described body, described slip joint is fixed on described body by screw rod and clamping bolt, and the socket steel ring end of described body is provided with rubber seal, and the bellmouth steel loop end of described body is provided with stiffening ring.
But the PCCP engineering accident standby pipes of this patent is designed to steel telescopic pipe because of its whole standby pipes, not only apparatus structure is complicated, and cost is high, and erection weight is large, and whole device is placed in soil, is vulnerable to underground water corrosion, causes new damage.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art, to provide a kind of PCCP pipeline accident treatment device and installation method thereof, when PCCP needs to change the accident treatment of pipeline, can simple process fast.
For achieving the above object, the present invention adopts following technical proposals:
A kind of PCCP pipeline accident treatment device, comprise accident treatment pipe, described accident treatment pipe constructs identical with conventional PCCP pipe, accident treatment length of tube is shorter than conventional PCCP pipe, and the two ends of accident treatment length of tube are bellmouth, and one end is the conventional bellmouth matched with the socket of conventional PCCP pipe one end, the other end is the expansion bend end bell matched with expansion bend socket;
Described expansion bend comprises the telescopic pipe that axial section is inverted T-shaped, telescopic pipe two ends are socket, and two sockets can extend in the expansion bend end bell of accident treatment pipe and the bellmouth of adjacent conventional PCCP pipe respectively, and on the outer tube wall of telescopic pipe two ends all cover have 1 or 2 rubber rings; Inverted T-shaped telescopic pipe External protrusions divides bolt hole, screw rod is connected with the flange chuck on described adjacent conventional PCCP pipe outer wall through this bolt hole, and be threaded onto on screw rod by nut, and when turn nut drives telescopic pipe to move to adjacent conventional PCCP pipe apart from time minimum, the flexible pipe end extending into the expansion bend end bell of accident treatment pipe is still in the expansion bend end bell of accident treatment pipe.
The length of described accident treatment pipe is shorter than the length of conventional PCCP pipeline 0.5 meter, and convenient being positioned over by accident treatment pipe damages pipe position, avoids adjacent normal conventional PCCP pipe of slinging, the damage of the normal conventional PCCP pipe prevented.
The socket at described telescopic pipe two ends and the socket consistent size of conventional PCCP pipe, be conveniently inserted in the expansion bend end bell of accident treatment pipe and the bellmouth of adjacent conventional PCCP pipe.
The axes normal of projection and telescopic pipe on described telescopic pipe outer wall, the flange chuck on convenient and adjacent conventional PCCP pipe outer wall aligns, and is convenient to connect.
On described telescopic pipe outer wall, projection is continuous print ring part.
On described telescopic pipe outer wall, projection is discontinuous and is in the some parts on same circumference, and these some parts are corresponding with the flange chuck on adjacent conventional PCCP pipe outer wall.Facilitate bolt to be connected with nut, be convenient to moving telescopic pipe.
The vertical socket near adjacent conventional PCCP pipe of described flange chuck, convenient stretching by telescopic pipe enters in the bellmouth of conventional PCCP pipe, plays and effectively connects effect.
Described flange chuck is auxiliary telescopic device, comprises the flange of the socket outside being enclosed within adjacent conventional PCCP pipe, and is installed on the steel fastener on flange, facilitate bolt to be connected with nut.
An installation method for PCCP pipeline accident treatment device, comprises the following steps:
1) the PCCP pipe cutting damaged is taken out;
2) according to the length that the PCCP pipe damaged stays, select the accident treatment pipe of appropriate length, install telescopic pipe and rubber ring;
3) by normal construction method by accident treatment pipe and telescopic pipe installation in position;
4) the normal PCCP tube faucet place mounting flange chuck closed on again, fixes steel fastener, and installs screw rod and nut, and the screw rod the other end is through the bolt mouth of projection on telescopic pipe outer wall;
5) then tightening nuts, pulls telescopic pipe, makes it dock in place with the normal PCCP tube faucet closed on;
6) auxiliary flange chuck screw rod and nut is laid down;
7) be wound around reinforcement wire, then concreting protective layer in telescopic pipe outside, after backfill, install.
The invention has the beneficial effects as follows:
Beneficial effect of the present invention:
1, there is significant economic benefit.
The present invention only needs to process the pipe occurring accident, and the accident treatment time is short, can comparatively fast resume water supply, therefore, and remarkable in economical benefits.
2, the accident treatment time is short
Installation Technology of the present invention is simple, and all adopt Push-fit construction, therefore, the accident treatment time is shorter, comparatively fast can recover the water supply of pipeline.
3, accident treatment is taken up an area few, and construction equipment is few
The present invention only needs to excavate the pipe parts occurring accident, does not need to excavate out adjacent several sections of pipes, and therefore, accident settlement takes up an area less; And only need a lifting appliance, and common processing method, need at least three lifting appliances.
4, the impact on adjacent tube is decreased
The present invention only needs to process the pipe occurring accident, does not need, as usual processing method, to lift adjacent pipe, therefore, decreases the impact on adjacent pipe, avoids the secondary damage of adjacent pipe.
5, structure is simple, and flange chuck is auxiliary telescopic device, can reuse
The outlet structure of telescopic pipe of the present invention is simple and practical, and flange chuck can be reused, saving construction cost.
6, stressed and outer Anticorrosion is solved
The present invention stretch socket in place after, namely complete installation, outer felt solves the stressed problem of high pressure pipe line around reinforcement wire, and external wrapping concrete layer efficiently solves the corrosion of underground water to structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the present invention connected by expansion bend;
Fig. 3 is that expansion bend stretches the structural representation of the present invention put in place;
Fig. 4 is the structural representation of the present invention installed;
Wherein, 1. accident treatment pipe, 2. expansion bend end bell, 3. conventional bellmouth, 4. telescopic pipe, 5. rubber ring, 6. flange chuck, 7. screw rod, 8. reinforcement wire, 9. concrete.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1:
As Figure 1-Figure 4, PCCP pipeline accident treatment device, comprise accident treatment pipe 1, described accident treatment pipe 1 constructs identical with conventional PCCP pipe, accident treatment pipe 1 length is shorter than conventional PCCP pipe, and the two ends of accident treatment pipe 1 length are bellmouth, and one end is the conventional bellmouth 3 matched with the socket of conventional PCCP pipe one end, and the other end is the expansion bend end bell 2 matched with expansion bend socket;
Described expansion bend comprises the telescopic pipe 4 that axial section is inverted T-shaped, telescopic pipe 4 two ends are socket, and two sockets can extend in the expansion bend end bell 2 of accident treatment pipe 1 and the conventional bellmouth 3 of adjacent conventional PCCP pipe respectively, and on the outer tube wall of telescopic pipe 4 two ends all cover have 1 or 2 rubber rings 5; Inverted T-shaped telescopic pipe 4 External protrusions divides bolt hole, screw rod 7 is connected with the flange chuck 6 on described adjacent conventional PCCP pipe outer wall through this bolt hole, and be threaded onto on screw rod 7 by nut, and when turn nut drives telescopic pipe 4 to move to adjacent conventional PCCP pipe apart from time minimum, the flexible pipe end extending into the expansion bend end bell 2 of accident treatment pipe 1 is still in the expansion bend end bell 2 of accident treatment pipe 1.
The length of accident treatment pipe 1 is shorter than the length of conventional PCCP pipeline 0.5 meter, and convenient being positioned over by accident treatment pipe 1 damages pipe position, avoids adjacent normal conventional PCCP pipe of slinging, the damage of the normal conventional PCCP pipe prevented.
The socket at telescopic pipe 4 two ends and the socket consistent size of conventional PCCP pipe, be conveniently inserted in the expansion bend end bell 2 of accident treatment pipe 1 and the conventional bellmouth 3 of adjacent conventional PCCP pipe.
The axes normal of projection and telescopic pipe on telescopic pipe outer wall, the flange chuck 6 on convenient and adjacent conventional PCCP pipe outer wall aligns, and is convenient to connect.
On telescopic pipe outer wall, projection is continuous print ring part.
The vertical socket near adjacent conventional PCCP pipe of flange chuck 6, convenient stretching by telescopic pipe enters in the bellmouth of conventional PCCP pipe, plays and effectively connects effect.
Flange chuck 6 comprises the flange of the socket outside being enclosed within adjacent conventional PCCP pipe, and is installed on the steel fastener on flange, facilitates bolt to be connected with nut.
An installation method for PCCP pipeline accident treatment device, comprises the following steps:
1) the PCCP pipe cutting damaged is taken out;
2) according to the length that the PCCP pipe damaged stays, select the accident treatment pipe of appropriate length, install telescopic pipe and rubber ring;
3) by normal construction method by accident treatment pipe and telescopic pipe installation in position;
4) the normal PCCP tube faucet place mounting flange chuck closed on again, fixes steel fastener, and installs screw rod and nut, and the screw rod the other end is through the bolt mouth of projection on telescopic pipe outer wall;
5) then tightening nuts, pulls telescopic pipe, makes it dock in place with the normal PCCP tube faucet closed on;
6) auxiliary flange chuck screw rod and nut is laid down;
7) be wound around reinforcement wire, then concreting protective layer in telescopic pipe outside, after backfill, install.
Embodiment 2:
As different from Example 1, on telescopic pipe outer wall, projection is discontinuous and is in the some parts on same circumference, and these some parts are corresponding with the flange chuck on adjacent conventional PCCP pipe outer wall.Facilitate bolt to be connected with nut, be convenient to moving telescopic pipe.All the other are identical with embodiment, do not repeat them here.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (9)
1. a PCCP pipeline accident treatment device, it is characterized in that, comprise accident treatment pipe, described accident treatment pipe constructs identical with conventional PCCP pipe, accident treatment length of tube is shorter than conventional PCCP pipe, and the two ends of accident treatment length of tube are bellmouth, and one end is the conventional bellmouth matched with the socket of conventional PCCP pipe one end, and the other end is the expansion bend end bell matched with expansion bend socket;
Described expansion bend comprises the telescopic pipe that axial section is inverted T-shaped, telescopic pipe two ends are socket, and two sockets can extend in the expansion bend end bell of accident treatment pipe and the bellmouth of adjacent conventional PCCP pipe respectively, and on the outer tube wall of telescopic pipe two ends all cover have 1 or 2 rubber rings; Inverted T-shaped telescopic pipe External protrusions divides bolt hole, screw rod is connected with the flange chuck on described adjacent conventional PCCP pipe outer wall through this bolt hole, and be threaded onto on screw rod by nut, and when turn nut drives telescopic pipe to move to adjacent conventional PCCP pipe apart from time minimum, the flexible pipe end extending into the expansion bend end bell of accident treatment pipe is still in the expansion bend end bell of accident treatment pipe.
2. PCCP pipeline accident treatment device as claimed in claim 1, it is characterized in that, the length of described accident treatment pipe is shorter than the length of conventional PCCP pipeline 0.5 meter.
3. PCCP pipeline accident treatment device as claimed in claim 1, is characterized in that, the socket at described telescopic pipe two ends and the socket consistent size of conventional PCCP pipe.
4. PCCP pipeline accident treatment device as claimed in claim 1, is characterized in that, the axes normal of projection and telescopic pipe on described telescopic pipe outer wall.
5. the PCCP pipeline accident treatment device as described in claim 1 or 4, is characterized in that, on described telescopic pipe outer wall, projection is continuous print ring part.
6. the PCCP pipeline accident treatment device as described in claim 1 or 4, it is characterized in that, on described telescopic pipe outer wall, projection is discontinuous and is in the some parts on same circumference, and these some parts are corresponding with the flange chuck on adjacent conventional PCCP pipe outer wall.
7. PCCP pipeline accident treatment device as claimed in claim 1, is characterized in that, the vertical socket near adjacent conventional PCCP pipe of described flange chuck.
8. the PCCP pipeline accident treatment device as described in claim 1 or 7, is characterized in that, described flange chuck comprises the flange of the socket outside being enclosed within adjacent conventional PCCP pipe, and is installed on the steel fastener on flange.
9. an installation method for PCCP pipeline accident treatment device, is characterized in that, comprises the following steps:
1) the PCCP pipe cutting damaged is taken out;
2) according to the length that the PCCP pipe damaged stays, select the accident treatment pipe of appropriate length, install telescopic pipe and rubber ring;
3) by normal construction method by accident treatment pipe and telescopic pipe installation in position;
4) the normal PCCP tube faucet place mounting flange chuck closed on again, fixes steel fastener, and installs screw rod and nut, and the screw rod the other end is through the bolt mouth of projection on telescopic pipe outer wall;
5) then tightening nuts, pulls telescopic pipe, makes it dock in place with the normal PCCP tube faucet closed on;
6) auxiliary flange chuck screw rod and nut is laid down;
7) be wound around reinforcement wire, then concreting protective layer in telescopic pipe outside, after backfill, install.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510446806.8A CN105135147B (en) | 2015-07-27 | 2015-07-27 | PCCP pipeline accidents processing unit and its installation method |
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CN201510446806.8A CN105135147B (en) | 2015-07-27 | 2015-07-27 | PCCP pipeline accidents processing unit and its installation method |
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CN105135147A true CN105135147A (en) | 2015-12-09 |
CN105135147B CN105135147B (en) | 2017-12-15 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108953832A (en) * | 2018-08-30 | 2018-12-07 | 碧圣开元仪表科技(北京)有限公司 | GRP pipe repairs rapid construction structure and construction method |
CN110966481A (en) * | 2019-11-21 | 2020-04-07 | 中电建生态环境集团有限公司 | Pressure pipeline repairing construction method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004086026A2 (en) * | 2003-03-25 | 2004-10-07 | Atherton David L | Method for testing prestressed concrete pipes |
JP2011080539A (en) * | 2009-10-07 | 2011-04-21 | Toyota Motor Corp | Pipe periphery contact structure, pipe connecting structure and gas treatment device |
CN102259385A (en) * | 2011-07-22 | 2011-11-30 | 深圳市卓成混凝土模块研究所 | Prestressed steel cylinder concrete tube capable of installing real-time detection device and preparation method thereof |
CN203082450U (en) * | 2012-12-31 | 2013-07-24 | 河北建设集团千秋管业有限公司 | Prestressed concrete cylinder pipe (PCCP) engineering accident reserve pipe |
CN204019289U (en) * | 2014-07-18 | 2014-12-17 | 河北建设集团千秋管业有限公司 | A kind of Prestressed concrete cylinder pipe hold/socket ring automatic sander |
CN204756295U (en) * | 2015-07-27 | 2015-11-11 | 冯若愚 | PCCP (prestressed concrete cylinder pipe) way accident processing apparatus |
-
2015
- 2015-07-27 CN CN201510446806.8A patent/CN105135147B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004086026A2 (en) * | 2003-03-25 | 2004-10-07 | Atherton David L | Method for testing prestressed concrete pipes |
JP2011080539A (en) * | 2009-10-07 | 2011-04-21 | Toyota Motor Corp | Pipe periphery contact structure, pipe connecting structure and gas treatment device |
CN102259385A (en) * | 2011-07-22 | 2011-11-30 | 深圳市卓成混凝土模块研究所 | Prestressed steel cylinder concrete tube capable of installing real-time detection device and preparation method thereof |
CN203082450U (en) * | 2012-12-31 | 2013-07-24 | 河北建设集团千秋管业有限公司 | Prestressed concrete cylinder pipe (PCCP) engineering accident reserve pipe |
CN204019289U (en) * | 2014-07-18 | 2014-12-17 | 河北建设集团千秋管业有限公司 | A kind of Prestressed concrete cylinder pipe hold/socket ring automatic sander |
CN204756295U (en) * | 2015-07-27 | 2015-11-11 | 冯若愚 | PCCP (prestressed concrete cylinder pipe) way accident processing apparatus |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108953832A (en) * | 2018-08-30 | 2018-12-07 | 碧圣开元仪表科技(北京)有限公司 | GRP pipe repairs rapid construction structure and construction method |
CN110966481A (en) * | 2019-11-21 | 2020-04-07 | 中电建生态环境集团有限公司 | Pressure pipeline repairing construction method |
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Effective date of registration: 20201221 Address after: 224006 No.1, Huaxing Avenue, Yandu District, Yancheng City, Jiangsu Province Patentee after: Yancheng Yongan Technology Co.,Ltd. Address before: School of civil engineering and water conservancy, Shandong University, 17923 Jingshi Road, Lixia District, Jinan City, Shandong Province, 250013 Patentee before: Feng Ruoyu Patentee before: Su Risheng |