CN107588233B - A kind of installation method of super large caliber penstock in inclined shaft lower horizontal section - Google Patents
A kind of installation method of super large caliber penstock in inclined shaft lower horizontal section Download PDFInfo
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- CN107588233B CN107588233B CN201710677615.1A CN201710677615A CN107588233B CN 107588233 B CN107588233 B CN 107588233B CN 201710677615 A CN201710677615 A CN 201710677615A CN 107588233 B CN107588233 B CN 107588233B
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Abstract
The invention discloses a kind of super large caliber penstock inclined shaft lower horizontal section installation method.It include: super large caliber penstock group pair, transport in the adit of steel pipe joint, location and installation of the shaping steel tube in inclined shaft lower horizontal section, location and installation is that flat section is arranged earth anchor, carrying cable and connect with traction climbing device and earth anchor on inclined shaft, and traction climbing device is set to first section lower horizontal section penstock lower end；Each single-unit of lower horizontal section penstock successively organize weldering, climb position it is fixed after remove traction climbing device and complete installation.The present invention can effectively simplify conventional production lines operation layout, simplify assembling temporary facility arrangement in hole, reduce branch hole and main hole excavated section, reduces tube coupling and assemble land area, it eliminates finished product and stacks land demand, the secondary assembly welding one-pass molding of tube coupling, the weldering of mechanization group improve installation accuracy, eliminate the reliance on local method lifting and turn over, reduce security risk, shorten installation period, reduces installation personnel quantity, investment reduction.
Description
Technical field
The invention belongs to hydraulic and hydroelectric engineering construction technical fields, especially belong to hydroelectric facility mounting technique field,
In particular to automated production and mounting technique of a kind of super large caliber hydrogenerator penstock in inclined shaft lower horizontal section.
Background technique
Penstock is all made of multiple pairs of round platforms in factory is conventionally manufactured, blanking tile after molding is hung flat
Platform carries out group circle and adjusts to justify, then welded by several welders using tools such as press, jointers, and postwelding carries out nondestructive flaw detection examination,
It hands over riveter to carry out tune circle, stiffening ring installation after qualification, then welder is handed over to carry out stiffening ring abutment joint and fillet weld seam.Single-unit production
Period needs 3.5 days, and manufacturer quantity is more, and site area demand is big；Working tunnel, road is needed to meet fortune when installation and transportation
Defeated requirement.
When heavy caliber penstock is conventionally manufactured in hole, tile mounting means is needed in advance to main hole into digging, in hole
It builds to circle platform, arrange day anchor and the lifting of trolley auxiliary and turns over, single-unit is installed and transported in place, and penstock installation is completed
Afterwards, then platform and trolley are removed, then to dig position carry out concrete backfill.Which is generally used when cast pipe union is installed,
Auxiliary process is more, and security risk is big, and quality is not easy to control.
The installation of lower curved section penstock includes: to excavate to working tunnel and main hole, the sectional dimension and peace of excavation
Full situation will meet penstock transport and group reload request.According to Steel Pipe Design installation site, day anchor, volume are arranged in hole in advance
Mechanical, electrical dynamic cucurbit, track trolley, slope and the two sides lower horizontal section Dong Bi earth anchor etc. are raised, is turned over for penstock, transport and interim
Mount reinforcing.Tile is carried out a group circle on flat Duan Zuyuan platform under in hole to weld, is supported and is transported using skate, by branch hole and master
The tube coupling that completed of hole infall upstream all store in hole by transport to upstream inclined tube, bend pipe, straight pipe, big power station pressure
Flat section working tunnel and the tube coupling of supervisor intersection upstream mount be fixed on slope section in hole, curved segment respectively under pipeline, it is desirable that hang
Dress must be solid and reliable.It is fixed in the storage of every section steel pipe with fashioned iron, and sets earth anchor in front of its two sides, between steel pipe and earth anchor
It is connected with wirerope, it is secured to be allowed to storage.After the weldering of the tube coupling group in branch hole and main hole infall downstream, dismounting group circle platform,
It is installed upwards section by section since downstream location section, three section casting concretes of every installation, the mounting means, civil engineering excavated volume is larger,
Cost of investment is high, and security risk is big, and the duration is longer.
Summary of the invention
The present invention is insufficient according to prior art to disclose a kind of super large caliber penstock in the installation of inclined shaft lower horizontal section
Method.The problem to be solved in the present invention is to provide assembling in a kind of effective simplified conventional production lines operation layout, simplified hole is interim
Facility arrangement reduces tube coupling assembling land area, safer, more efficient super large caliber penstock in inclined shaft lower horizontal section
Installation method.
The invention is realized by the following technical scheme:
Installation method of the super large caliber penstock in inclined shaft lower horizontal section, including following methods: super large caliber penstock
Field assembly makes, and transports in the hole of steel pipe joint, location and installation of the shaping steel tube in inclined shaft lower horizontal section, in which:
The production of super large caliber penstock field assembly: the tile for splitting into three valves is carried out to adjust circle, group weldering assembling single-unit
Steel pipe carries out stiffening ring on steel pipe and connects to welding equipment；
Transport in the adit of steel pipe joint: the prefabricated laying track in adit, by the penstock of field fabrication by that can divide
Destage vehicle is transported to start bit below inclined shaft lower horizontal section；
Location and installation of the shaping steel tube in inclined shaft lower horizontal section: being arranged earth anchor in upper flat section, upper curved section setting protection chock and
Rubber, carrying cable one end connect with earth anchorage, connect through protection chock and rubber top, the other end and traction climbing device
It connects, traction climbing device is set to first section lower horizontal section penstock lower end；Each single-unit of lower horizontal section penstock successively organizes weldering, climbs
Positioning, lower horizontal section tube body integrally climb it is fixed after remove traction climbing device, complete the integral installation of multitube section.
Tune described further circle, group weldering assembling use automatic assembly welding equipment, and equipment includes that body frame, body frame support can be rotated
Group is to bracket, automatic welder and support trolley；Body frame is fixed on erecting bed ground；Can be rotated group includes: by body frame to bracket
The center of rotation of support, the supporting beam that one end is connect with center of rotation, the other end can connect with steel pipe walls, radially arrange, support
Beam is radially arranged symmetrically 12 groups, and every group two side by side, every supporting beam is provided with oil cylinder top beam and the position of adjustable length
Displacement sensor.
The transport group moves trolley along track, and prefabricated laying track penetrates through in track and adit, and transport group is to trolley
Including mechanical lift-up rotating device and hydraulic jack.
The supporting beam adjustable length oil cylinder end is connected and fixed by U-shaped card and steel pipe walls.
The separable trolley by mutual separable transfer trolley and Assembling Jack Plane Set at；Transfer trolley includes two groups logical
Cross the walking mechanism of releasable rod connection connection；Installation trolley is provided with hydraulic jacking device.
The transfer trolley and installation trolley can respectively along composition adit main hole or/and branch hole along prefabricated laying rail
Road is mobile.
Every section tube coupling climb positioning climb altitude be next tube coupling spatial altitude, after climbing latter end tube coupling group weldering
Plane is located at start bit below lower horizontal section.
The present invention uses more valve steel pipe tile group welding structure penstocks, group weldering assembling equipment progress single-unit round by tune,
The welding of more piece automatic assembling, realizes the secondary in-place forming of assembly welding of penstock tile.
By being installed at transport group to the mechanical lift-up device on trolley, cooperate hydraulic jack, system rotation and submerged arc
Welding machine reaches stiffening ring mechanization to reload request.
Installation site is directly transported to by assembling station using detachable trolley after tube coupling group soldering lattice, is realized without wire saws
It transports and lifts, particularly with the first more piece assembling for filling section and install, significant, steel pipe fabrication and installation method of the present invention is not only
Safety is adjusted to steel pipe in place, and speed is fast, precision is high；Station and installation site are assembled not in same branch for penstock
In hole, penstock can be transported on installation station by cooperating with transfer trolley.
It is using separate type trolley that plurality of sections of steel pipes is whole after multitube section group is welded into entirety in hole by mechanization welding device
It is in place using jacking apparatus jacking installation on trolley after transport is in place, it reduces tube coupling and security risk is installed, improve penstock peace
Fill efficiency.
The present invention carries out the promotion of lower horizontal section penstock using traction climbing device, locks including the top of climbing device
Determine device earth anchor, carrying cable one end and earth anchor, which understand, to be fixed, and the carrying cable other end is fixed on lower horizontal section first segment pressure steel
Traction climbing device on pipe, steel pipe climb along pull-cord
Present invention process helpfulness, the present invention provides a kind of penstock construction and installation technologies, will using welding device
Semi-finished product steel pipe tile carries out the automatic assembling welding of single-unit and more piece；Stiffening ring mechanization is carried out to trolley using transport group
Installation；Realize that tube coupling is lifted and transported without elevator using the transfer trolley and installation trolley of separate type trolley；With separable trolley
By single tube section steel pipe transmission it is in place after, carry out group section by section using traction climbing device and merge to climb location and installation；The present invention can be with
Effectively simplify conventional production lines operation layout, simplifies assembling temporary facility arrangement in hole, reduce branch hole and main hole excavated section, subtract
Education and correction for juvenile offenders section assembles land area, eliminates finished product and stacks land demand, the secondary assembly welding one-pass molding of tube coupling, the weldering of mechanization group
Installation accuracy is improved, local method lifting is eliminated the reliance on and is turned over, security risk is reduced, shortens installation period, reduce installation personnel number
Amount, investment reduction.
Detailed description of the invention
Fig. 1 is welding device of the present invention and transport group to trolley schematic diagram；
Fig. 2 is the transfer trolley and installation trolley schematic diagram of the separable trolley of the present invention；
Fig. 3 is transfer trolley and the in-orbit road joint working condition solid signal of installation trolley of the separable trolley of the present invention
Figure；
Fig. 4 is lower horizontal section penstock 1-4 of embodiment of the present invention section installation condition schematic diagram；
Fig. 5 is that schematic diagram is completed in lower horizontal section penstock 1-20 of embodiment of the present invention section integral installation；
Fig. 6 is U-shaped card stationary state structural schematic diagram of the present invention；
Fig. 7 is U-shaped card end structure illustration of the present invention.
In figure, 1 is center of rotation, and 2 be transport group to trolley, and 3 be supporting beam, and 4 be displacement sensor, and 5 be oil cylinder top beam,
6 be U-shaped card, and 61 be fixing bolt, and 62 be reinforcing rib, and 7 be automatic soldering device, and 8 be heating plate, and 9 be hydraulic jack, and 10 are
Rotating device is jacked, 11 be installation trolley, and 12 be transfer trolley, and 13 be connecting rod, and 14 be support frame, and 15 be jacking apparatus, and 16 are
Earth anchor, 17 be protection chock and rubber, and 18 be carrying cable, and 19 be traction climbing device, and A is upper flat section, and B is upper curved section, and C is
Lower curved section, D are lower horizontal sections, and E is lower flat section, and F is top beam end construction part, and G is penstock wall.
Specific embodiment
Implementation is specifically installed with some hydropower station penstock below, and invention is further explained, the description of embodiment
It is served only for should not be understood as limiting the scope of the invention, those skilled in the art to further instruction of the present invention
The scope of protection of the invention is also belonged to according to some nonessential modifications and adaptations that the content of foregoing invention is made.
Super large caliber penstock installation method of the present invention utilizes following equipment: automatic assembly welding equipment, transport group is to trolley
2, the separable trolley including transfer trolley 12 and installation trolley 11 draws climbing device 19.
Super large caliber penstock installation method of the present invention includes following methods: super large caliber penstock field assembly system
Make, is transported in the hole of steel pipe joint, location and installation of the shaping steel tube in inclined shaft lower horizontal section D；Wherein:
The production of super large caliber penstock field assembly is: the tile for splitting into three valves being carried out to adjust circle, group weldering assembling single
Steel pipe is saved, stiffening ring is carried out on steel pipe, welding equipment is connect；
Transporting in the adit of steel pipe joint is: the prefabricated laying track in adit, the penstock of field fabrication is passed through can
Separation trolley is transported to start bit below inclined shaft lower horizontal section D；
Location and installation of the shaping steel tube in inclined shaft lower horizontal section D: earth anchor 16 is arranged in flat section A on inclined shaft, and upper curved section B setting is anti-
Protection pad wood and rubber 17,18 one end of carrying cable is fixedly connected with earth anchor 16, through 17 top of protection chock and rubber, the other end with
It draws climbing device 19 to connect, traction climbing device 19 is set to first section lower horizontal section D penstock lower end；Lower horizontal section D pressure steel
Manage each single-unit successively organize weldering, positioning of climbing, lower horizontal section D tube body integrally climb it is fixed after remove traction climbing device 19, complete more
Tube coupling integral installation.
Adjust circle, group weldering assembling use automatic assembly welding equipment, equipment include body frame, body frame support rotatable group to bracket,
Automatic soldering device 7 and transport group are to trolley 2；Body frame is fixed on erecting bed ground；Can be rotated group includes: by body frame to bracket
The center of rotation 1 of support, one end is connect with center of rotation, the other end can be connect with steel pipe walls, 12 groups of supporting beams radially arranging
3, every group two side by side, every supporting beam 3 is provided with the oil cylinder top beam 5 and displacement sensor 4 of adjustable length.
Transport group moves trolley 2 along track, and prefabricated laying track penetrates through in track and adit, and transport group wraps trolley 2
Include mechanical lift-up rotating device 10 and hydraulic jack 9.
3 adjustable length oil cylinder top beam of supporting beam, 5 end is connected and fixed by U-shaped card 6 with steel pipe walls.
Separable trolley is made of mutually separable transfer trolley 12 and installation trolley 11；Transfer trolley 12 includes two groups
The walking mechanism connected by detachable connecting rod 13；Installation trolley 11 is provided with hydraulic jacking device 15.
Transfer trolley 12 and installation trolley 11 can the track of prefabricated laying moves along adit respectively, adit includes main hole
With branch hole.
Every section tube coupling climb positioning climb altitude be next tube coupling spatial altitude, after climbing latter end tube coupling group weld plane
The start bit below lower horizontal section D.
Automatic assembly welding system: penstock tile can be assembled to, be adjusted the automatic assembly welding system of circle, welding, such as Fig. 1
It is shown.
Transport group is to trolley 2: transporting for penstock tile, cooperates automatic assembly welding system group to tile, transport group pair
Trolley 2 is arranged hydraulic jack 9 and mechanical lift-up rotating device 10 and installs for stiffening ring mechanization.
Separable trolley includes transfer trolley 12 and installation trolley 11: for the transport of single or multitube section and installation, cooperation
Automatic assembly welding system assembles tube coupling separates placement of mechanical jacking apparatus 15 on trolley, for tube coupling transport installation, such as Fig. 2,3
It is shown.
Transfer trolley 12: when penstock assembles station and installation site not in same branch hole, transfer trolley 12 is matched
It closes installation trolley 11 and carries out steel pipe transmission, arrange support frame 14 and detachable connecting rod 13 on transfer trolley 12, can need to carry out
Branch hole carries out vertical deflecting transhipment when transporting, and deflecting transhipment can also be added by live 13 structure of connecting rod, as shown in Figure 3.
It is climbed in installation penstock by traction in inclined shaft lower horizontal section D and carries out location and installation, be arranged first in upper flat section A
Earth anchor 16, upper curved section B setting protection chock and rubber 17,18 one end of carrying cable are fixedly connected, through protecting chock with earth anchor 16
It is connect with 17 top of rubber, the other end with traction climbing device 19, traction climbing device 19 is set to first section lower horizontal section D pressure steel
Pipe lower end；Each single-unit of lower horizontal section D penstock successively organizes weldering, positioning of climbing, lower horizontal section D tube body integrally climb it is fixed after remove and lead
Draw climbing device 19, completes the integral installation of multitube section.The single-unit structure of lower horizontal section D penstock is according to the arc of curvature of lower horizontal section D
Degree splits into array tube coupling, and group postwelding is matched with the radian of lower horizontal section D.
Specific group is as follows to, installation process:
Realize that penstock tile single-unit or more piece automatic assembling weld using automatic assembly welding equipment: automatic assembly welding equipment
Equipped with polyteny, radially detachable supporting beam 3,3 end of supporting beam are equipped with oil cylinder top beam 5 for tile assembling, tune circle.It is propping up
It supports beam 3 and is equipped with corresponding 24 displacement sensors 4 two-by-two, each displacement sensor 4 converges data control stretching and adjusts circle, makes tile
To dress group to adjustment circularity, when tile is transported under automatic assembly welding equipment trolley 2 by transport group, by transport group to trolley
2 jackings are adjusted and supporting beam control mode is adjusted, and tile radian is made to reach requirement.
As shown in Figure 6, Figure 7, tile and top beam are firmly combined the U-shaped card 6 for being fixed with band bolt 61, that is, can guarantee steel pipe
Internal diameter control, there is the safety that can guarantee tile in the case where revolving dummy status.In figure, U-shaped card 6 is a U-shaped knot for having reinforcing rib 62
Component, U-shaped structure are fixed with side setting bolt, in use, axial by steel pipe walls G and oil cylinder top beam end by penstock
Structural member F is embedded in U-shaped card 6 simultaneously and is fastened and fixed bolt 61.
After the radian of first tile and relative position are fixed, first tile is rotated 120 ° by automatic assembly welding device, the
Two same programs of tile are adjusted in place, and by the joint welding both ends between tile to just, welding electrode or gas are protected by hand
Solder joint solid welding is fixed, according still further to the method adjustment third tile.Using being arranged in automatic assembly welding equipment after full circle tune circle is qualified
Automatic soldering device 7 carry out submerged arc welding, first formulates welding procedure before welding, is carried out according to qualified welding procedure specification (WPS)
Welding.Dehydrogenation is carried out to weld seam using heating plate 8 after welding.
Stiffening ring mechanization connects welding equipment: the stiffening ring on tube coupling, which utilizes, is installed at transport group to the machinery top on trolley 2
Device 10 is risen, 9 fragment of hydraulic jack jacks up stiffening ring and is close to tube wall, and system rotates after reinforcing, while transport group is to platform
Vehicle 2 promotes screw rod rotation, and the stiffening ring on trolley is pushed to reach installation site, and a piece of stiffening ring is to dress under starting, until all complete
At.Submerged arc welding is carried out with the automatic soldering device 7 being arranged in automatic assembly welding equipment after assembling.
Installation is transported and lifted without wire saws in penstock hole: the installation trolley 11 of detachable trolley can will assemble work
Position and installation site pressure steel pipe transmission, installation in same branch hole；Separable trolley include two can independent running mechanism, turn
Trolley 12 and installation trolley 11 are transported, installs and two mechanical lift-up devices 15 is set on trolley 11, tube coupling height can be promoted.Group weldering
Tube coupling afterwards can be placed directly on installation trolley 11 and be transported.
When transfer trolley 12 is that penstock assembles station and installation site not in same branch hole, it is coupled trolley 11
Carry out steel pipe transmission.Transfer trolley 12 is divided to for two symmetrical independent ambulation structures, and two support frames 14 are arranged in each mechanism, can
To fix tube coupling, 2 detachable connecting rods 13 are arranged in two symmetrical independent ambulation structure stands.
Trolley 11 is installed and loads tube coupling along track travel, the track and 12 track of transfer trolley for installing trolley 11 are handed in branch hole
Place's intersection is connect, in installation trolley 11 before transfer trolley 12, installation trolley 11 increases tube coupling, and 12 liang of structures of transfer trolley are logical
It crosses connecting rod to be separated from each other, after trolley 11 to be installed enters transfer trolley 12, transfer trolley 12 is close, and installation trolley 11 declines tube coupling
Highly, lean against tube coupling on 12 support frame 14 of transfer trolley, installation 11 liang of structures of trolley avoid 12 running track of transfer trolley, turn
It transports after fixed connecting rod 13 is installed by 12 liang of mechanisms of trolley and advances along track.If arrangement installs trolley 11 and rail again there are also branch hole
Tube coupling on transfer trolley 12 is placed on installation trolley 11 and transported by road.
Penstock lower horizontal section D integrally promotes installation: flat section A arranges one group of earth anchor 16 first on penstock, is used for
The carrying cable 18 of installation traction climbing device 19 arranges chock and rubber 17 in upper curved section B, for protecting carrying cable 18.
Flat section E possesses biggish operating space under penstock, carries out the weldering construction of penstock group herein, tube coupling is adopted after the completion of group weldering
It with upside-down method of hull-section construction, is promoted using the traction climbing device 19 being fixed on first segment penstock, every group is soldered Cheng Yijie, leads
Draw the whole next tube coupling spatial altitude that climbs of climbing device 18, until the weldering of all tube coupling groups, promotion finish.
As shown in Figure 4, Figure 5, penstock is split into 20 groups of tube couplings of number, Fig. 4 according to the crooked radian of lower horizontal section D by this example
It is lower horizontal section penstock 1-4 section installation condition schematic diagram；Fig. 5 is that signal is completed in lower horizontal section penstock 1-20 section integral installation
Figure.
Claims (7)
1. a kind of super large caliber penstock is in the installation method of inclined shaft lower horizontal section, it is characterised in that including following methods: super large
The production of bore penstock field assembly, the interior transport of the adit of steel pipe joint, location and installation of the shaping steel tube in inclined shaft lower horizontal section；Its
In:
The production of super large caliber penstock field assembly: the tile for splitting into three valves being carried out to adjust circle, group weldering assembling single-unit steel pipe,
Stiffening ring is carried out on steel pipe to connect welding equipment；
Transport in the adit of steel pipe joint: the prefabricated laying track in adit, by the penstock of field fabrication by separating platform
Vehicle is transported to start bit below inclined shaft lower horizontal section；
Location and installation of the shaping steel tube in inclined shaft lower horizontal section: earth anchor is arranged in flat section on inclined shaft, and carrying cable one end and ground anchor
Fixed connection, the other end are connect with traction climbing device, and traction climbing device is set to first section lower horizontal section penstock lower part；Under it is curved
Section each single-unit of penstock successively organizes weldering, positioning of climbing, lower horizontal section tube body integrally climb it is fixed after dismounting draw climbing device, it is complete
At multitube section integral installation.
2. installation method of the super large caliber penstock in inclined shaft lower horizontal section according to claim 1, it is characterised in that: described
Adjust circle, group weldering assembling use automatic assembly welding equipment, equipment include body frame, body frame support rotatable group to bracket, automatic welding
Device and transport group are to trolley；Body frame is fixed on erecting bed ground；Can be rotated group includes: the rotation supported by body frame to bracket
Center, 12 groups of supporting beams that one end connect with center of rotation, they other end and steel pipe walls connection, radially arranges, and every group two side by side,
Every supporting beam is provided with the oil cylinder top beam and displacement sensor of adjustable length.
3. installation method of the super large caliber penstock in inclined shaft lower horizontal section according to claim 2, it is characterised in that: described
Transport group moves trolley along track, and prefabricated laying track penetrates through in track and adit, and transport group includes mechanical lift-up to trolley
Rotating device and hydraulic jack.
4. installation method of the super large caliber penstock in inclined shaft lower horizontal section according to claim 2, it is characterised in that: described
Supporting beam adjustable length oil cylinder top beam end is connected and fixed by U-shaped card and steel pipe walls.
5. installation method of the super large caliber penstock in inclined shaft lower horizontal section according to claim 1, it is characterised in that: described
Separable trolley by mutual separable transfer trolley and Assembling Jack Plane Set at；Transfer trolley includes two groups and passes through detachable connecting rod
The walking mechanism of connection；Installation trolley is provided with hydraulic jacking device.
6. installation method of the super large caliber penstock in inclined shaft lower horizontal section according to claim 5, it is characterised in that: described
Transfer trolley and installation trolley can the track of prefabricated laying moves along adit respectively, adit includes main hole and/or branch hole.
7. installation method of the super large caliber penstock in inclined shaft lower horizontal section according to claim 1, it is characterised in that: described
Each single-unit of lower horizontal section penstock climb positioning climb altitude be next tube coupling spatial altitude, after climbing latter end tube coupling group weldering
Plane is located at start bit below lower horizontal section.
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| CN108797536B (en) * | 2018-07-24 | 2024-03-22 | 中国水利水电第七工程局有限公司 | Spiral pressure regulating well structure |
| CN109183743B (en) * | 2018-11-02 | 2023-11-17 | 中国水利水电第三工程局有限公司 | Rotary device and method for steel pipe passing through intersection in hole |
| CN109514047B (en) * | 2019-01-03 | 2021-09-10 | 上海江南船舶管业有限公司 | Welding process of thick-wall pipe |
| CN110092333A (en) * | 2019-05-24 | 2019-08-06 | 郑州水务建筑工程股份有限公司 | A kind of method for dismounting of no-dig technique bell and spigot pipeline |
| CN110131481B (en) * | 2019-05-28 | 2020-10-02 | 中国水利水电第三工程局有限公司 | Assembling-free joint-combining construction method for upper flat section steel pipe of inclined shaft |
| CN110094577B (en) * | 2019-06-11 | 2024-02-27 | 中国葛洲坝集团国际工程有限公司 | Device and method for installing oversized-diameter inclined dam rear open pipe under strong wind condition |
| CN111648797B (en) * | 2020-04-21 | 2021-09-03 | 中铁七局集团第三工程有限公司 | Hydraulic tunnel pipeline installation trolley, installation system and installation method |
| CN113001092B (en) * | 2021-02-02 | 2023-01-06 | 中国水电四局（兰州）机械装备有限公司 | Six-equal-division steel pipe stiffening ring assembling equipment |
| CN113983242A (en) * | 2021-09-06 | 2022-01-28 | 中国水电四局（兰州）机械装备有限公司 | Large pipeline splicing device and large pipeline splicing method |
| CN113814646A (en) * | 2021-09-10 | 2021-12-21 | 中国水利水电第八工程局有限公司 | Steel pipe stiffening ring assembling device and assembling method thereof |
| CN115673662A (en) * | 2022-10-21 | 2023-02-03 | 山东东宏管业股份有限公司 | Shrimp waist elbow pipe fitting welding set and welding system |
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| CN201687218U (en) * | 2010-05-15 | 2010-12-29 | 中国葛洲坝集团股份有限公司 | Installation device of steel shaft well |
| FR2972043B1 (en) * | 2011-02-25 | 2014-06-13 | Atlantique Travaux Publics | DEVICE FOR THE INSTALLATION OF SEGMENTED PIPES IN OPEN TRENCHES |
| CN104071720A (en) * | 2014-07-01 | 2014-10-01 | 葛洲坝集团第二工程有限公司 | In-tunnel turn-over method of super-large diameter penstock |
| CN104989873B (en) * | 2015-05-22 | 2017-04-26 | 中国葛洲坝集团第二工程有限公司 | Penstock oblique-pulling inversion assembling method |
| CN106151682B (en) * | 2016-07-15 | 2018-01-30 | 中国葛洲坝集团机电建设有限公司 | The large-scale penstock installation downward putting device of high slope and penstock installation method |
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