CN2890553Y - Big-flow centripetal stress sewage-treatment pipe - Google Patents
Big-flow centripetal stress sewage-treatment pipe Download PDFInfo
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- CN2890553Y CN2890553Y CN 200620023584 CN200620023584U CN2890553Y CN 2890553 Y CN2890553 Y CN 2890553Y CN 200620023584 CN200620023584 CN 200620023584 CN 200620023584 U CN200620023584 U CN 200620023584U CN 2890553 Y CN2890553 Y CN 2890553Y
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Abstract
The utility model relates to a big-flow centripetal stress sewage-treatment pipe comprising a concrete pipe body and a cylindrical framework which is arranged inside the pipe body and made of hooped bars and longitudinal bars. The cylindrical framework consists of an exterior framework and an interior framework; wherein the exterior framework provides an annular tube, and the interior framework is provided with a lengthways tube. A preserved bore is arranged between the exterior framework and the interior framework. Steel cables fixed by anchorage and with centripetal stress by pulling are arranged in a circular tube, a longitudinal tube and a reserved bore. The ends of the pipe body provide anchorage to fix cable steel wire, and a triangle connection rack is arranged in the parallel joint of the pipe body. Two margins of the triangle connection rack are connected respectively with the exterior framework of the contiguous two pipe bodies. Two pipes or a plurality of pipes in parallel are connected to form a bearing structure system with a big covering area and can prevent the infringement of sundry pollution source. Moreover, the utility model enhances such special capabilities of connected pipes as anti-shearing, anti-distortion, anti-settling, anti-seismic property and anti-pollution.
Description
Technical field
The utility model relates to a kind of large flow centripetal-stress sewage-treating pipeline.
Technical background
Pre-tensioned prestressing cement pipe with tratitional technology production, because of being subjected to the restriction of technology, preparation condition, internal diameter of tube body does not reach 3 meters, the PCCP Prestressed concrete cylinder pipe that introduction of foreign technology is produced, also in response to being subjected to technology, also super only 4 meters of the restriction internal diameter of preparation condition.The PCCP pipe is also because of a minute three process manufacturing, the mouth of pipe does not reach totally enclosed standard, also circumferential crack can occur after buried, and the tensile region, both sides also axial crack can occur, PCCP is also high especially because of cost, be not suitable for for this reason big flow, extensive, in the water diversion project in zone.
South water to north east, work centerline have industrial pollution district, many places along the line, many places river sewage district, to pass hundreds of bar river along the line, cross tens railways, highway, seismic region occurred frequently, many places, coal mine gob are arranged, the low-lying big embankment in many places is arranged, the many places dense population areas is arranged, high and cold frost zone, several places is arranged, if according to traditional process engineering, the enlightened canal in level land, cross the river, pass by on one's way and build Fang Han, depression frame aqueduct is because of the engineering cost height, can waste a huge sum of money, formation " scale engineering " possibly.With Hutuohe River inverted-siphon engineering is example, large flow centripetal-stress sewage-treating pipeline, adopt ring-like cancellated new process, new technology, can form new architecture, project of South-to-North water diversion if can adopt this new architecture can save wide variety of materials resource, water resource, land resources, synthetically assess, can save the fund of hundred million yuan of hundreds ofs, can also prolong the working life of integrated engineering, improve the managerial skills of automation.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of large flow centripetal-stress sewage-treating pipeline of a kind of resist displacement, anti-sedimentation, antidetonation.
The utility model adopts following technological scheme:
The utility model comprises concrete tube body and is arranged on the cylinder frame of being made by ring muscle and vertical muscle in the body, it is characterized in that described cylinder frame is made of outer skeleton and nexine skeleton, be fixed with the hoop bobbin on the outer skeleton, be set with vertical bobbin on the nexine skeleton, be provided with preformed hole between outer skeleton and the nexine skeleton, be provided with in the hoop bobbin by the fixing steel strand that produce centripetal-stress through stretch-draw of ground tackle, vertically be provided with in the bobbin by the fixing steel strand that produce longitudinal prestressing through stretch-draw of ground tackle, be provided with the steel strand through stretch-draw generation longitudinal prestressing that body can be connected into pipeline in the preformed hole, be provided with the fixedly ground tackle of steel strand in the end of body, place in parallel is provided with the triangular shape link press span at body, two limits of triangular shape link press span are connected with the outer skeletal fixation of adjacent two bodys respectively, be provided with the high pressure expansion joint at the pipeline joint, be provided with positioning table in duct bottom, between duct bottom and positioning table, be provided with the shock insulation layer.
The utility model has the hoop bobbin that is evenly distributed in the inboard or the arranged outside of outer skeleton, is provided with one or more steel strand through stretch-draw generation centripetal-stress in round bobbin, and the body two bottom sides is provided with the fixedly ground tackle of steel strand.
Be provided with the nexine skeleton in the outer skeleton of the utility model, the side of locating at the nexine skeleton is fixed with the evenly distributed vertical bobbin that is set in parallel with the body medial axis, vertically be provided with one or more steel strand through stretch-draw generation longitudinal prestressing in the bobbin, the body end is provided with the fixedly ground tackle of steel strand.
The utility model is provided with preformed hole between outer skeleton of body and nexine skeleton, it is uniform that preformed hole is hoop, is provided with the steel strand that one or more can connect into body pipeline in preformed hole, is provided with the fixedly ground tackle of steel strand in the end of pipeline.
Scribble the plastic tube of lubricant oil in the also available pipe of the utility model hoop bobbin, be provided with in plastic tube through stretch-draw and produce prestressed steel strand, the hoop bobbin can adopt and be arranged side by side the many plastic tubes that steel strand are housed.
Scribble the plastic tube of lubricant oil in the also available pipe of the vertical bobbin of the utility model, be provided with in plastic tube through stretch-draw and produce prestressed steel strand, vertically bobbin can adopt and be arranged side by side the many plastic tubes that steel strand are housed.
The utility model can be determined body length by the caliber size, and construction casting connects into longitudinal prestressing technology and reaches 300 meters overlength pipelines continuously.
The bottom of the utility model body is provided with bed course, is provided with the shock insulation layer between positioning table and body.
The utility model is provided with the triangular shape link press span that is used for the body parallel connection in both sides up and down at body place in parallel, outside the body parallel connection, be provided with afterburning hole in the triangular shape link press span, in afterburning hole, be provided with one or more steel strand, be provided with the fixedly ground tackle of steel strand in end, body joint through stretch-draw generation longitudinal prestressing.
The utility model is provided with the high pressure expansion joint at the pipeline joint, and flexible place is provided with the high pressure waterstop at high pressure.
The utility model good effect is as follows: the utility model can be by working condition requirement, the optimal design pipe structure, body adopts ring-like cancellated new mode, elder generation is to the concrete tube body precharge pressure before body bears external load, impel overall structure to form " centripetal-stress ", thereby can offset because all or part of tensile stress that interior external load produces guarantees that the cracking under tensile stress and the tensile stress does not appear in established centripetal-stress body.The new technology that adopts longitudinal prestressing to connect connects into the overlength pipeline to adjacent body by working condition requirement, strengthened pipeline shearing resistance, bending resistance, anti-twist performance, possessed whole resist displacement, the condition of anti-sedimentation, antidetonation.Adopt the extraordinary new process of transverse prestress parallel connection, two or many pipelines and connect together, formed large-area supporting structure system, can prevent the infringement of various pollution sources, strengthened distinctive anti-shearing, anti-twist, the anti-sedimentation of disjunctor pipeline, antiseismic, resistant to pollution ability, special many complex geological conditions such as project of South-to-North water diversion coal mine gob, the low-lying embankment in multiple seismic region district can be adapted to, the requirement of engineering of the many body system water transfer of south water to north trunk line, big zone, big flow can be satisfied.Can reach the standard of Automatic Control water, the trunk line of project of South-to-North water diversion or major project if can adopt large flow centripetal-stress sewage-treating pipeline, can save material resources because of having reduced engineering work load, because of having formed new architecture, can save a large amount of waterpower resourses, because of having changed water-carriage mode, the large-area land resources of regenerating.
Description of drawings
Accompanying drawing 1 is the utility model pipe structure schematic representation.
Accompanying drawing 2 is the utility model body end view vertical with center line.
Accompanying drawing 3 is the utility model accompanying drawing 1 body location schematic representation.
Accompanying drawing 4 is the utility model single steel strand bobbin schematic representation.
Accompanying drawing 5 is three steel strand schematic representation of the utility model.
Accompanying drawing 6 is the utility model single steel strand overcoat plastic tube schematic representation
Accompanying drawing 7 is the utility model body outside anchoring steel strand schematic representation
Accompanying drawing 8 is the structural representation that the utility model body hoop bobbin and body medial axis are provided with in vertical direction.
Accompanying drawing 9 is the structural representation of dextrorotation direction setting for the utility model body hoop bobbin and body medial axis.
Accompanying drawing 10 is the utility model body parallel-connection structure schematic representation.
Accompanying drawing 11 is the utility model body end view in parallel.
Accompanying drawing 12 is the utility model body place in parallel link press span structural representation.
Accompanying drawing 13 is the utility model pipeline profile side elevation schematic representation.
Accompanying drawing 14 is that the utility model hoop bobbin steel strand are at inboard wall of tube body anchoring schematic representation.
Accompanying drawing 15 is the utility model base schematic representation.
Accompanying drawing 16 is three bodys of the utility model schematic representation in parallel.
In the accompanying drawings: 1 body, 2 outer skeletons, 3 circular arc bobbins, 4 middle level skeletons, 5 vertical bobbins, 6 steel strand, 7 ground tackles, 8 preformed holes, 9 ground tackles, 10 positioning tables, 11 bed courses, 12 afterburning holes, 13 link press spans, 14 construction lines, 15 pipelines, 16 decompressors, 17 high pressure expansion joints, 18 high pressure waterstops, 19 shock insulation layers, 20 plastic tubes
Embodiment
Below in conjunction with accompanying drawing the utility model is done to discuss in detail:
As shown in Figure 1, the utility model comprises concrete tube body 1 and is arranged on the outer skeleton 2 and the nexine skeleton 4 that are made of vertical muscle and ring muscle in the body 1, the inboard or the outside of outer skeleton 2 are fixed with hoop bobbin 3, the outside of nexine skeleton 4 is fixed with vertical bobbin 5, is provided with preformed hole 8 between outer skeleton 2 and the nexine skeleton 4.
Shown in accompanying drawing 1,2, the inboard or the arranged outside of the utility model 1 internal and external layer skeleton 2 in body have hoop bobbin 3, endless tube body one circle is arranged at the steel strand 7 of the corresponding intersection in the body outside in hoop bobbin 3, also be provided with the ground tackle 9 of anchoring steel strand 7 through stretch-draw generation ring orientation prestress.The arranged outside that is shown in nexine skeleton 4 as 1,2 in accompanying drawing has vertical bobbin 5, vertically being provided with the steel strand 7 that produce longitudinal prestressing through stretch-draw in the bobbin 5, is provided with the fixedly ground tackle 6 of steel strand in the end of body.Be shown between body 1 outer skeleton and the nexine skeleton as 1,2 in accompanying drawing and be provided with vertical preformed hole 8, vertically be provided with the steel strand 6 that connect body in the preformed hole 8.
Shown in accompanying drawing 1,3, the utility model is provided with load-bearing positioning table 10 in the bottom of body 1, is provided with concrete cushion 11 in the bottom of positioning table.
Shown in accompanying drawing 1,3, in the hoop bobbin 3 that the utility model is provided with in body 1, vertically be provided with single steel strand 7 in the bobbin 5.
Shown in accompanying drawing 1,5, in the hoop bobbin 3 that the utility model is provided with, the vertical bobbin 5 many steel strand 6 are arranged in body 1.
Shown in Fig. 1,6, the hoop bobbin 3 that the utility model is provided with in body 1, vertical bobbin 5 can scribble lubricant oil with inwall, are with the plastic tube of steel strand 6 in pipe.
Shown in accompanying drawing 1,7, the utility model has the ground tackle 9 of the corresponding intersection of anchoring hoop steel strand 6 in body 1 arranged outside.
Shown in accompanying drawing 1,8, hoop bobbin 3 that the utility model is provided with in body and body 1 medial axis in vertical direction, endless tube body 1 is uniform.
Shown in accompanying drawing 1,9, hoop bobbin 3 that the utility model is provided with in body 1 and body 1 medial axis are the dextrorotation direction, and endless tube body 1 is uniform.
Shown in accompanying drawing 1,10, the utility model setting can be connected in parallel 3 bodys 1.
Shown in accompanying drawing 1,11, the utility model is provided with 3 bodys is connected in parallel, be provided with load-bearing positioning table 10 in the bottom of body 1, be provided with concrete cushion 11 in the bottom of load-bearing positioning table, 1 place in parallel is provided with afterburning hole 12 at body, is provided with shock insulation layer 19 between body 1 and load-bearing positioning table.
Shown in accompanying drawing 1,12, the utility model is provided with decompressor 15 on body top, is provided with the preformed hole 8 in the body 1, produces prestressed steel strand 6 through stretch-draw, and the more piece body is cascaded, and forms overlength pipeline 13.13 counterpart places are provided with high pressure expansion joint 17 at pipeline, and 17 places, high pressure expansion joint are provided with high pressure waterstop 18.
Hoop bobbin 3 described in the utility model can be fixed on the inboard or the outside of outer skeleton 2, also can encircle the setting of skeleton individual pen, and also rotatable multi-turn around the home.The corresponding hoop bobbin arranged in a crossed manner of individual pen is selected metal bellows for use, and the bobbin of multi-turn dextrorotation or derotation selects for use inwall to scribble the plastic tube of lubricant oil.
Load-bearing positioning table 10 described in the utility model is to be used for the fondational structure that body 1 is made, the one, and in order to adapt to special complex geological conditions, the 2nd, for the flatness of body 1, the construction of straightness accuracy.Bed course is for auxilliary flat foundation, is convenient to the construction of load-bearing positioning table 10, is convenient to the parallel connection of body 1.
The afterburning hole that body described in the utility model 1 place in parallel is provided with is the stress value that is used for balance body place in parallel, impels body vertical, lateral stressed rationally.The triangular shape link press span that described place in parallel is provided with is in order to reinforce the parallel connection of body 1, to impel circumference stress, and the transverse stress configuration rationally reaches the whole purpose of offsetting of local pressure.
The internal diameter 3-8 rice of body 1 described in the utility model or more than 8 meters, wall thickness is a 0.20-0.45 rice, duct length are 8-300 rice or 500 meters.With the preparation internal diameter is 5 meters, long 10 meters, pipe thickness is 0.30 meter and is example, body can adopt horizontal forming preparation process, its sequence of construction is as follows: at first be the making of skeleton, select for use Twisted Steel to make outer skeleton 2, nexine skeleton 4 respectively, respectively prestress wire is installed with into hoop bobbin 3 respectively, penetrates vertical bobbin 5, hoop bobbin 3, vertically bobbin 5 is fixed on the skeleton, between outer skeleton and nexine skeleton preformed hole 8 is set.Be placed in the template of body 1 after above-mentioned whole skeletons and bobbin fixed, the concreting that stirs in the body template, concrete is smash moulding by sequence of construction requirement shake, when body inner concrete intensity reaches 70%, install the ground tackle of body end, and by the vertical steel strand of technological requirement elder generation's post-stretching hoop steel strand, distinguish anchoring with ground tackle after reaching the stretching force value, with vacuum pump being evacuated in the bobbin, injection high-grade cement slurry, it is flat the anchor hole envelope to have irritated the slurry back, according to technical requirements form removal maintenance.
Body 1 described in the utility model can be provided with disjunctor pipeline 13 by working condition requirement, water flow size, can two the pipeline parallel connection also can many pipeline parallel connections, sequence of construction can be by the parallel simultaneously construction of the technical requirements of single pipe.With the triangular shape link press span body skeleton is linked together.
The pipeline section of body 3-5 rice described in the utility model also can be used vertical making, uses the longitudinal prestressing interconnection technique then, and some tube couplings are cascaded.
The high pressure expansion joint that parallel pipeline 13 described in the utility model is provided with at the counterpart place can make continuously, also can sectional making.
Inwall described in the utility model scribbles the plastic tube of lubricant oil, cause is no bonding prestress muscle, the back sealing off and covering anchorage is fixed with ground tackle in the intact back of stretch-draw, do not need grouting, the shock insulation layer can be provided with in multiple seismic region, and body 1 body 13 in parallel described in the utility model can intersect stretch-draw anchor shown in accompanying drawing 14,15 in the inboard wall of tube body bottom.
Single or many parallel pipelines described in the utility model are mainly used in the aqueduct of project of South-to-North water diversion, and training works is crossed river, river, and the inverted-siphon engineering on road also can be used for passage over strait, and subway engineering also can be used for environment-friendly engineering, municipal engineering.
The utility model preparation method is as follows:
The making of first step load-bearing positioning table: in the good foundation trench of excavation, build blinding concrete, make the load-bearing positioning table after the initial set, and the connecting leg body is made the load-bearing positioning table simultaneously in the parallel lines starting point.
The second step support outer moulding board: on the load-bearing positioning table, and the used body end plate of the outer moulding board of connecting leg body is fastened on the load-bearing positioning table body outer moulding board support.
The 3rd step carcasing: make outer skeleton of body and nexine skeleton with Twisted Steel.
The 4th step is bobbin fixedly: be fixed on the outer skeleton penetrating steel strand in the hoop bobbin.Be fixed on the nexine skeleton penetrating steel strand in vertical bobbin.Then the nexine skeleton is packed in outer skeleton, the preformed hole pipe is being fixed between outer skeleton and the nexine skeleton.With link press span parallel skeleton is connected together.
The 5th step support inner formword: inner formword adopts automatic supported, utilizes the body end plate that inner and outer template is connected together.
The 6th step was built moulding: the concrete that stirs is injected in the pipe die by sequence of construction with high-pressure service pump, and moulding is smash in shake.
The 7th step stretch-draw anchor: treat that the body concrete strength reaches at 70% o'clock, carry out hoop stretch-draw, vertically stretch-draw by technological requirement.Stretching force uses ground tackle the hoop steel strand after reaching standard, vertically steel strand anchoring respectively.Body and connect the place afterburning hole carry out stretch-draw by technological requirement, steel strand are fixed with ground tackle in the end.
The 8th step grouting sealing off and covering anchorage: use cement slurry the hoop bobbin, vertical tube tube, preformed hole, fill in afterburning hole, with cement mortar the ground tackle hole is sealed and put down.
The form removal maintenance of the 9th step: concrete strength reaches at 90% o'clock body template complete removal, carries out maintenance by technological requirement.
Continuously construction of the tenth step: carry out the making of second tube coupling by above sequence of construction after first tube coupling or tube coupling in parallel are finished, can produce continuously and reach 300 meters length.
The 12 step was installed high pressure resistant waterstop: body reaches when length is set, and by job specfication special high pressure waterstop is installed, and working pressure can reach more than the 3.0MPa.
The 13 step was made high pressure resistant expansion joint: with high pressure resistant waterstop the body counterpart is linked together, reach high voltage bearing standard, and the connecting leg road can adopt inside and outside two circles to connect with the high pressure waterstop, and can construct continuously in the body expansion joint, also can reserve the back and make separately.
The pipeline of internal diameter 3-5 rice also can be used vertical explained hereafter, utilizes metallic material creative activity positioning table, after the body that merogenesis is made is all finished, hangs the displacement lifting by construction technical requirement, with longitudinal prestressing technology the more piece body is chained together.The connection of pipeline counterpart seals with meeting the drum packing, makes expansion joint separately by construction length.
Claims (10)
1, a kind of large flow centripetal-stress sewage-treating pipeline, it comprises concrete tube body (1) and is arranged on the cylinder frame of being made by ring muscle and vertical muscle in the body (1), it is characterized in that described cylinder frame is made of outer skeleton (2) and nexine skeleton (4), be fixed with hoop bobbin (3) on the outer skeleton (2), be set with vertical bobbin (5) on the nexine skeleton (4), be provided with preformed hole (8) between outer skeleton (2) and the nexine skeleton (4), be provided with in the hoop bobbin (3) by the fixing steel strand (6) that produce centripetal-stress through stretch-draw of ground tackle (7), vertically be provided with in the bobbin (5) by the fixing steel strand that produce longitudinal prestressing through stretch-draw of ground tackle (7), be provided with the steel strand (6) through stretch-draw generation longitudinal prestressing that can connect into pipeline (13) in the preformed hole (8) to body (1), be provided with the fixedly ground tackle (7) of steel strand (6) in the end of body, place in parallel is provided with triangular shape link press span (13) at body (1), fixedly connected with the outer skeleton (2) of adjacent two bodys respectively in two limits of triangular shape link press span (13), be provided with high pressure expansion joint (17) at pipeline (15) joint, be provided with positioning table (10) in pipeline (1) bottom, between pipeline (1) bottom and positioning table (10), be provided with shock insulation layer (19).
2, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1, it is characterized in that the hoop bobbin (3) that is evenly distributed being arranged in the inboard or the arranged outside of outer skeleton (2), be provided with one or more steel strand (6) through stretch-draw generation centripetal-stress in round bobbin, body (1) two bottom sides is provided with the fixedly ground tackle (9) of steel strand (6).
3, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2, it is characterized in that being provided with in the outer skeleton (2) nexine skeleton (4), the evenly distributed vertical bobbin (5) that side is fixed with and body (1) medial axis is set in parallel of locating at nexine skeleton (4), vertically be provided with one or more steel strand (6) through stretch-draw generation longitudinal prestressing in the bobbin (5), body (1) end is provided with the fixedly ground tackle of steel strand (7).
4, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2, it is characterized in that between outer skeleton of body (1) (2) and nexine skeleton (4), being provided with preformed hole (8), it is uniform that preformed hole (8) is hoop, in preformed hole (8), be provided with the steel strand (6) that one or more can connect into pipeline (13) to body (1), be provided with the fixedly ground tackle of steel strand (7) in the end of pipeline (13).
5, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2, it is characterized in that scribbling in the also available pipe of hoop bobbin (3) plastic tube (20) of lubricant oil, be provided with through stretch-draw in plastic tube (20) and produce prestressed steel strand (6), the hoop bobbin can adopt and be arranged side by side the many plastic tubes (20) that steel strand (6) are housed.
6, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2, it is characterized in that scribbling in the also available pipe of vertical bobbin (5) plastic tube (20) of lubricant oil, be provided with through stretch-draw in plastic tube (20) and produce prestressed steel strand (6), vertically bobbin can adopt and be arranged side by side the many plastic tubes (20) that steel strand (6) are housed.
7, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2 is characterized in that and can determine body (1) length by the caliber size that construction casting connects into longitudinal prestressing technology and reaches 300 meters overlength pipelines (13) continuously.
8, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2 is characterized in that the bottom of body (1) is provided with bed course (11), is provided with shock insulation layer (19) between positioning table (10) and body (1).
9, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2, it is characterized in that being provided with the triangular shape link press span that is used for the body parallel connection in both sides up and down at body (1) place in parallel, outside the body parallel connection, be provided with afterburning hole (12) in the triangular shape link press span (13), in afterburning hole (12), be provided with one or more steel strand (6), be provided with the fixedly ground tackle (7) of steel strand (6) in body (1) end, joint through stretch-draw generation longitudinal prestressing.
10, a kind of large flow centripetal-stress sewage-treating pipeline according to claim 1 and 2 is characterized in that being provided with high pressure expansion joint (17) at pipeline (16) joint, and flexible place is provided with high pressure waterstop (18) at high pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023584 CN2890553Y (en) | 2006-02-24 | 2006-02-24 | Big-flow centripetal stress sewage-treatment pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023584 CN2890553Y (en) | 2006-02-24 | 2006-02-24 | Big-flow centripetal stress sewage-treatment pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2890553Y true CN2890553Y (en) | 2007-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023584 Expired - Fee Related CN2890553Y (en) | 2006-02-24 | 2006-02-24 | Big-flow centripetal stress sewage-treatment pipe |
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| Country | Link |
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| CN (1) | CN2890553Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811253B (en) * | 2006-02-24 | 2010-05-12 | 衡水长江预应力有限公司 | Large flow centripetal-stress sewage-treating pipeline and its production process |
| CN108593453A (en) * | 2018-06-12 | 2018-09-28 | 西南交通大学 | The Combined hydraulic loading device of shield tunnel prototype segment structural test |
-
2006
- 2006-02-24 CN CN 200620023584 patent/CN2890553Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811253B (en) * | 2006-02-24 | 2010-05-12 | 衡水长江预应力有限公司 | Large flow centripetal-stress sewage-treating pipeline and its production process |
| CN108593453A (en) * | 2018-06-12 | 2018-09-28 | 西南交通大学 | The Combined hydraulic loading device of shield tunnel prototype segment structural test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20100224 |