CN101552430B - Method for installing and hoisting gas-insulated metal closed power transmission line in shaft and device thereof - Google Patents

Method for installing and hoisting gas-insulated metal closed power transmission line in shaft and device thereof Download PDF

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Publication number
CN101552430B
CN101552430B CN2009100224463A CN200910022446A CN101552430B CN 101552430 B CN101552430 B CN 101552430B CN 2009100224463 A CN2009100224463 A CN 2009100224463A CN 200910022446 A CN200910022446 A CN 200910022446A CN 101552430 B CN101552430 B CN 101552430B
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transmission line
power transmission
gas
insulated metal
closed power
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CN101552430A (en
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阮全荣
杨新光
刘慧凤
段宏江
刘立峰
高敏
王龙
桑志强
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NORTHWEST HYDRO CONSULTING ENGINEERS CHECC
PowerChina Northwest Engineering Corp Ltd
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NORTHWEST HYDRO CONSULTING ENGINEERS CHECC
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Abstract

The invention relates to the field of large and medium hydropower projects, in particular to a method for installing and hoisting gas-insulated metal closed power transmission line in a shaft, and a device thereof. The method is characterized in that the installation of the gas-insulated metal closed power transmission line GIL device (4) adopts two independent procedures by using a hoisting device with large hoisting height, namely, preassembly procedure and final installation procedure to carry out installation and hoisting. The method has the advantages of simple structure, safety, reliability and obvious effect and has great popularization and application values in solving the technical problems of hoisting the GIL device in a highly vertical shaft safely, fastening the installation ofthe GIL device, arranging equipment and the like.

Description

Gas-insulated metal closed power transmission line is method for installing and hoisting and equipment in vertical shaft
Technical field
The present invention relates to a kind of large and medium-sized hydroelectric project field, particularly a kind of gas-insulated metal closed power transmission line method for installing and hoisting and equipment in vertical shaft.
Background technology
Electric power system is inserted with 800kV one step voltage in large and medium-sized hydroelectric station, and the 800kV side is 3/2 breaker connection.Outlet totally 2 times.Gas-insulated metal closed power transmission line abbreviates GIL as.GIL in underground power house main transformer cavern with after 800kV gas-insulated metal enclosed switchgear station gas-insulated metal closed power transmission line (GIS) outlet is connected, through the long horizontal gallery of over one hundred rice (105m), the vertical vertical shaft that enters high hundreds of rice (207m) again is to outlet station (ground elevation
Figure G2009100224463D00011
2460m), guide to outlet mechanical floor (floor ground elevation on again
Figure G2009100224463D00012
2481m) back is connected with overhead transmission line by aerial condutor.Gas-insulated metal closed power transmission line GIL device parameter sees Table 1.
Table 1
Shell sizes External diameter 676mm, wall thickness 12.7mm
Conductor size External diameter 178mm, wall thickness 8mm
Maximum single-piece GIL is heavy 850kg
Single-unit length (housing) 11.5m
Vertical vertical shaft GIL joint number (single-phase) 18
Therefore, installation lifting at gas-insulated metal closed power transmission line GIL equipment in the hundreds of meters vertical vertical shafts of 207m is studied, feasibility to layout big elevating height lifting appliance and mode of operation thereof in limited space is studied, and technical problems such as safety lifting gas-insulated metal closed power transmission line GIL equipment, quickening gas-insulated metal closed power transmission line GIL equipment installation progress, solution apparatus arrangement have great importance in the vertical vertical shaft of height to solving.
Summary of the invention
The objective of the invention is to propose a kind of gas-insulated metal closed power transmission line method for installing and hoisting and equipment in the vertical vertical shaft of height, big elevating height lifting appliance and mode of operation thereof are proposed specification requirement, solve safety lifting gas-insulated metal closed power transmission line GIL equipment and technology problem in the vertical vertical shaft of height.
Technical scheme of the present invention is, design a kind of gas-insulated metal closed power transmission line method for installing and hoisting in vertical shaft, it is characterized in that: gas-insulated metal closed power transmission line GIL equipment adopts two independent programs by the big elevating height lifting appliance in vertical shaft: the pre-assembled program is installed lifting with final installation procedure.
Described big elevating height lifting appliance comprises electrical bibeam bridge crane, electric single-beam bridge crane, two equipment are arranged in the vertical vertical shaft of height one on the other, the electric single-beam bridge crane below is connected with wirerope hanging basket frame, by wirerope gas-insulated metal closed power transmission line GIL equipment is placed on the pre-mounting bracket; Electrical bibeam bridge crane is connected with gas-insulated metal closed power transmission line GIL equipment by wirerope, and gas-insulated metal closed power transmission line GIL equipment is mounted on the vertical vertical shaft borehole wall installing zone from pre-mounting bracket.
Described vertical vertical shaft borehole wall installing zone is provided with mounting guide rail, and the pulley dolly slides up and down and is connected on the mounting guide rail, is useful on the pulley cart stationary pin of fixed block dolly relevant position on mounting guide rail on the pulley dolly.
The model of described electric single-beam bridge crane is the LD5t-9.0m lifting mechanism, carries out the pre-assembled program.
The model of described electrical bibeam bridge crane is the QD5t-10.4m lifting mechanism, adopts two reels, bi-motor arrangement form, carries out final installation procedure.
Every single-phase damping hanger that is equipped with on the vertical vertical shaft borehole wall of described gas-insulated metal closed power transmission line GIL equipment hoisting unit correspondence, interval 40m between the damping hanger.
Described pulley dolly has 2~4.
The pre-installation procedure of described GIL equipment comprises the steps:
(1) first section gas-insulated metal closed power transmission line GIL equipment that will collect dress with electric single-beam bridge crane moves vertically on collection dress support two arm supports, and is fixed by dismountable L type strutting piece;
(2) second section gas-insulated metal closed power transmission line GIL equipment section moved vertically to epimere GIL equipment collection dress support relevant position by electric single-beam bridge crane, back, alignment pin location connects two GIL equipment by bolt;
(3) unload dismountable L type strutting piece from collection dress arm, the GIL equipment section that connects is transferred by the space between collection dress support two arms;
(4) repeat above step, finish, finish the pre-assembled program until final stage GIL equipment is connected;
The final installation procedure of described GIL equipment comprises the steps:
(1) with electrical bibeam bridge crane GIL assembling section is sling and move to the mounting guide rail section, the pulley dolly on the mounting guide rail is fixed on the GIL assembling section by guide block, and unloads lower sheave cart stationary pin;
(2) with electrical bibeam bridge crane GIL assembling section is descended along mounting guide rail; When this GIL unit arrive elevation is installed after, by pulley cart stationary pin with the pulley cart stationary on mounting guide rail; To lead chain and hang on the damping hanger, and lead chain and hook the GIL lifting rope, pull down guide block, GIL is separated with mounting guide rail; The GIL combination is put to its last installation site, or above the last mounted assembling section, open the dustproof transparent bag on the Dust-proof bottle on blind flange or the flange, carry out the flange face butt joint;
(3) remove electrical bibeam bridge crane, the pulley dolly is promoted to the top and is fixed to pulley cart stationary pin and prepares next operation on the mounting guide rail; Finish final installation procedure.
Described pre-assembled program can be carried out simultaneously with final installation procedure, or carry out step by step front and back.
Described big elevating height lifting appliance adopts the terrestrial operation mode, adopts frequency control.
Characteristics of the present invention are: two kinds of lifting appliances of the present invention are double-deck to be arranged, arranges compact.The QD5t lifting mechanism adopts two reels, bi-motor layout pattern, guarantees the fail safe of lifting.Under the influence of satisfying lifting appliance floor plan lifting scope, sling height, design lifting appliance height dimension, hoisting equipment do not establish drivers' cab and adopt the terrestrial operation mode to reach the purpose of optimizing outlet building bulk; GIL equipment lifts by crane and adopts frequency control, and slow running when equipment interconnection is provided with chain block and solves big elevating height lifting flexibility problem in the docking site, guarantee that the lifting of GIL safety reaches dress; GIL equipment is installed and is adopted two independent operation sequences, i.e. and " pre-assembled " and " the final installation ", both carry out simultaneously, the acceleration equipment erection schedule.This method is simple in structure, and is safe and reliable, and effect is remarkable, and technical problems such as safety lifting GIL equipment, quickening GIL equipment installation progress, solution apparatus arrangement have stronger application value in the vertical vertical shaft of height to solving.
Description of drawings
The present invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is an embodiment gas-insulated metal closed power transmission line GIL mounting structure schematic diagram;
Fig. 2 is that electric single-beam bridge crane is installed first segment to the second joint GIL schematic diagram;
Fig. 3 is that electric single-beam bridge crane is finished installation first segment to the second joint GIL schematic diagram;
Fig. 4 is that electrical bibeam bridge crane is installed the 3rd joint GIL schematic diagram;
Fig. 5 is that electrical bibeam bridge crane carries out the 3rd joint lifting, electric single-beam bridge crane carries out the 4th joint scheme of installation;
Fig. 6 is a gas-insulated metal closed power transmission line GIL installation in position schematic diagram.
Among the figure: 1, vertical vertical shaft; 2, electrical bibeam bridge crane; 3, electric single-beam bridge crane; 4, gas-insulated metal closed power transmission line GIL equipment; 5, hanging basket frame; 6, saddle; 7, pre-mounting bracket; 8, pulley dolly; 9, pulley cart stationary pin; 10, mounting guide rail; 11, dismountable L type strutting piece; 12, workbench; 13, chain block; 14, damping hanger; 15, Dust-proof bottle; 16, dustproof transparent bag.
Embodiment
In the high voltage GIL installation project of La Xiwa hydroelectric station, install at equipment for hydroelectric station, arrange the place very under the condition of limited, design GIL lifting appliance, the lifting program installed, reach in the vertical vertical shaft of height safe and reliable lifting GIL equipment and accelerate the purpose of GIL equipment installation progress.Gas-insulated metal closed power transmission line GIL equipment 4 is installed by the big elevating height lifting appliance in vertical vertical shaft 1 and adopted two independent programs: the pre-assembled program is installed lifting with final installation procedure.Present embodiment big elevating height lifting appliance comprises electrical bibeam bridge crane 2, electric single-beam bridge crane 3.
As shown in Figure 1, set up two work crane crossbeams at vertical vertical shaft 1 cabling on cable rack floor one sheaf space inwall, electrical bibeam bridge crane 2 and an electric single-beam bridge crane 3 are arranged one on the other at Liang Taiqiao machine crossbeam.Electric single-beam bridge crane 3 belows are connected with wirerope hanging basket frame 5, by wirerope gas-insulated metal closed power transmission line GIL equipment 4 are placed on the pre-mounting bracket 7; Electrical bibeam bridge crane 2 is connected with gas-insulated metal closed power transmission line GIL equipment 4 by wirerope, and gas-insulated metal closed power transmission line GIL equipment 4 is mounted on vertical vertical shaft 1 borehole wall installing zone from pre-mounting bracket 7.
The model of electrical bibeam bridge crane 2 is QD5t-10.4m, adopts two reels, bi-motor arrangement form; The model of electric single-beam bridge crane 3 is LD5t-9.0m.Gas-insulated metal closed power transmission line GIL equipment 4 is installed by lifting appliance electric single-beam bridge crane 3 lifting mechanisms, carries out the pre-assembled program; Carry out final installation procedure by electrical bibeam bridge crane 2.
Be provided with mounting guide rail 10 at vertical vertical shaft 1 borehole wall installing zone, pulley dolly 8 slides up and down and is connected on the mounting guide rail 10, is useful on the pulley cart stationary pin 9 of fixed block dolly 8 relevant position on mounting guide rail 10 on the pulley dolly 8.
Establish an electrical bibeam bridge crane 2 in outlet vertical shaft cabling on cable rack building floor one sheaf space, its below is provided with an electric single-beam bridge crane 3.Gas-insulated metal closed power transmission line GIL equipment 4 is installed and is adopted two independent operation sequences, i.e. " pre-assembled " and " the final installation " program, and both can carry out simultaneously, quicken the whole erection process, or front and back are carried out step by step.By electric single-beam bridge crane 3LD5t 4 assembly units of two sections gas-insulated metal closed power transmission line GIL equipment are placed on the pre-assembled platform after good during lifting, see scheme of installation 2, shown in Figure 3.The electrical bibeam bridge crane 2QD5t throttle body insulated metal closed power transmission line GIL equipment 4 of slinging again docks with two throttle body insulated metal closed power transmission line GIL equipment 4 on the pre-assembled platform, three throttle body insulated metal closed power transmission line GIL equipment, 4 integral body are sling after mounting guide rail 10 is put to elevation is installed by electrical bibeam bridge crane 2QD5t after finishing, see scheme of installation 4, shown in Figure 5.
Electrical bibeam bridge crane 2QD5t-10.4m is used for three joint module units liftings, lifting altitude 225m, lifting velocity 2/20m/min; Electric single-beam bridge crane 3LD5t-9.0m is used for single-unit assembling, lifting altitude 15m, lifting velocity 0.8/8m/min.Electrical bibeam bridge crane 2QD5t for the 225m lifting altitude, lifting mechanism adopts two reels, bi-motor, and definite reel height dimension, hoisting equipment are not established the purpose that drivers' cab employing terrestrial operation mode reaches reduction outlet building height dimension under the requirement of satisfying lifting appliance floor plan suspension hook scope line; The GIL lifting appliance adopts variable-frequency control technique, slow running when equipment interconnection, because vertical section reaches 207m, electrical bibeam bridge crane 2QD5t bridge machine gas-insulated metal closed power transmission line GIL equipment 4 lifting elements when lifting can produce the existing picture of concussion.For avoiding this situation, can being welded at the vertical suitable height of vertical shaft 1 borehole wall, (a damping hanger 14 is installed at every 40m place to a damping hanger 14, single-phase totally 5 damping hangers 14), earlier 5t being led chain during butt joint hangs on the damping hanger 14, hang gas-insulated metal closed power transmission line GIL equipment Unit 4 that will dock (totally 3 joints with leading chain again, long 34.5m), afterwards slowly toward transferring, until the abutted flange face.See shown in Figure 6ly, the damping hanger is connected with chain block 13 14 times, operating personnel on workbench 12 by cooperate the integral installation process of finishing with the terrestrial operation system.To the holding time of electrical bibeam bridge crane 2QD5t, electrical bibeam bridge crane 2QD5t is carried out the preparation of next group gas-insulated metal closed power transmission line GIL equipment 4 tubular lifting elements vertical transport when adopting said method can also reduce tubular gas-insulated metal closed power transmission line GIL equipment 4 lifting elements butt joint, adjustment, assembling.
The whole erection process is as follows: at first carry out pre-installation procedure.
1) first section gas-insulated metal closed power transmission line GIL equipment 4 that will collect dress with electric single-beam bridge crane 3 rises to the upright position from horizontal level, and move vertically on collection dress support two arm supports, dismountable L type strutting piece 11 is installed on wherein the arm, and is fixed by dismountable L type strutting piece 11;
2) second section gas-insulated metal closed power transmission line GIL equipment is moved vertically to epimere GIL equipment collection by electric single-beam bridge crane 3 for 4 sections and adorn the support relevant position, and, behind the alignment pin location, connect two GIL equipment by bolt to sealing ring on the flange;
3) unload dismountable L type strutting piece 11 from collection dress arm, the GIL equipment section that connects is transferred by the space between collection dress support two arms;
4) repeat above step, finish, finish the pre-assembled program until final stage GIL equipment is connected;
Electric single-beam bridge crane 3LD5t is removed from above-mentioned GIL assembling section, and GIL assembling section is sling with electrical bibeam bridge crane 2QD5t.
Carry out final installation procedure again:
1) the GIL assembling section that the pre-assembled program is assembled with electrical bibeam bridge crane 2 is sling and is moved to 10 sections of mounting guide rails, the pulley dolly 8 on the mounting guide rail 10 is fixed on the GIL assembling section by guide block, and unloads lower sheave cart stationary pin 9;
2) with electrical bibeam bridge crane 2 GIL assembling section is descended with the speed less than 20m/min along mounting guide rail 10; After this GIL unit arrives the installation elevation, pulley dolly 8 is fixed on the mounting guide rail 10 by pulley cart stationary pin 9; To lead chain and hang on the damping hanger 14, and lead chain and hook the GIL lifting rope, it is stressed that the chain whole chain of leading this moment is led in pulling, pulls down guide block, and GIL is separated with mounting guide rail 10; The GIL combination is put to its last installation site, or above the last mounted assembling section, open the dustproof transparent bag 16 on the Dust-proof bottle 15 on blind flange or the flange, carry out the flange face butt joint;
The flange face butt joint time is inserted shop bolt in four bolts hole of symmetry, make GIL move on to the time-out flange that aligns.Flange meshes together fully, confirms that the foamed plastics ring has taken out the back and symmetrically bolt has been screwed onto 80Nm (taking out shop bolt simultaneously) with torque spanner.All bolts of repetitive operation then.GIL assembling section is installed on the corresponding supporting structure;
3) electrical bibeam bridge crane 2QD5t and lift heavy frame are removed from above-mentioned mounted GIL assembling section, pulley dolly 8 is promoted to the top and is fixed on the mounting guide rail 10 with pulley cart stationary pin 9 and prepares next operation; Finish final installation procedure.
Repeat above program, GIL all in vertical shaft install.
The pulley dolly 8 of present embodiment has 2, can also be provided with 4 according to on-site actual situations in implementation process.

Claims (5)

1. gas-insulated metal closed power transmission line method for installing and hoisting in vertical shaft is characterized in that: gas-insulated metal closed power transmission line GIL equipment (4) perpendicular and in by electrical bibeam bridge crane (2) and two independent programs of electric single-beam bridge crane (3) employing: the pre-assembled program and finally installation procedure lifting is installed;
Described gas-insulated metal closed power transmission line GIL equipment (4) pre-assembled program comprises the steps:
1) first section gas-insulated metal closed power transmission line GIL equipment (4) that will collect dress with electric single-beam bridge crane (3) moves vertically on the pre-mounting bracket (7), and is fixed by dismountable L type strutting piece (11);
2) second section gas-insulated metal closed power transmission line GIL equipment (4) is moved vertically to pre-mounting bracket (7) relevant position of first section gas-insulated metal closed power transmission line GIL equipment (4) by electric single-beam bridge crane (3), behind the alignment pin location, pass through bolt linkage section two gas-insulated metal closed power transmission line GIL equipment (4);
3) unload dismountable L type strutting piece (11) from pre-mounting bracket (7) both sides support arm, the two sections gas-insulated metal closed power transmission line GIL equipment (4) that connect are transferred by the space between the support arm of pre-mounting bracket (7) both sides;
4) repeat above step, finish, finish the pre-assembled program until final stage gas-insulated metal closed power transmission line GIL equipment (4) is connected;
The final installation procedure of described gas-insulated metal closed power transmission line GIL equipment (4) comprises the steps:
1) gas-insulated metal closed power transmission line GIL equipment (4) the assembling section that the pre-assembled program is assembled with electrical bibeam bridge crane (2) is sling and is moved to mounting guide rail (10), pulley dolly (8) on the mounting guide rail (10) is fixed on gas-insulated metal closed power transmission line GIL equipment (4) the assembling section by guide block, and unloads lower sheave cart stationary pin (9);
2) with electrical bibeam bridge crane (2) gas-insulated metal closed power transmission line GIL equipment (4) assembling section is descended along mounting guide rail (10); After this gas-insulated metal closed power transmission line GIL equipment (4) arrives the installation elevation, pulley dolly (8) is fixed on the mounting guide rail (10) by pulley cart stationary pin (9); To lead chain and hang on the damping hanger (14), and lead chain and hook gas-insulated metal closed power transmission line GIL lifting rope, pull down guide block, gas-insulated metal closed power transmission line GIL equipment (4) is separated with mounting guide rail (10); With its last installation site of gas-insulated metal closed power transmission line GIL equipment (4) assembling Duan Fangzhi, or above the last mounted assembling section, open the dustproof transparent bag (16) on the Dust-proof bottle (15) on blind flange or the flange, carry out the flange face butt joint;
3) remove electrical bibeam bridge crane (2), pulley dolly (8) is promoted to the top and is fixed to upward preparation next operation of mounting guide rail (10) with pulley cart stationary pin (9); Finish final installation procedure;
Every single-phase 5 damping hangers (14) that are equipped with on vertical vertical shaft (1) borehole wall of described gas-insulated metal closed power transmission line GIL equipment (4) lifting elements correspondence, interval 40m between the damping hanger (14).
2. gas-insulated metal closed power transmission line according to claim 1 method for installing and hoisting in vertical shaft is characterized in that: the model of described electric single-beam bridge crane (3) is the LD5t-9.0m lifting mechanism, carries out the pre-assembled program.
3. gas-insulated metal closed power transmission line according to claim 1 method for installing and hoisting in vertical shaft, it is characterized in that: the model of described electrical bibeam bridge crane (2) is the QD5t-10.4m lifting mechanism, adopt two reels, bi-motor arrangement form, carry out final installation procedure.
4. gas-insulated metal closed power transmission line according to claim 1 method for installing and hoisting in vertical shaft is characterized in that: described pre-assembled program can be carried out simultaneously with final installation procedure, or carry out step by step front and back.
5. gas-insulated metal closed power transmission line according to claim 1 method for installing and hoisting in vertical shaft is characterized in that: described electrical bibeam bridge crane (2), electric single-beam bridge crane (3) adopt the terrestrial operation mode, adopt frequency control.
CN2009100224463A 2009-05-11 2009-05-11 Method for installing and hoisting gas-insulated metal closed power transmission line in shaft and device thereof Active CN101552430B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104986285B (en) * 2015-07-13 2017-03-29 中船黄埔文冲船舶有限公司 A kind of installation method of the outer defeated deep well pump of the built-in oil receiving equipment oil spilling of ship
CN110797791B (en) * 2019-11-04 2021-01-26 云南送变电工程有限公司 Method for overhauling lower 500kVGIL tubular bus without accompanying shutdown
CN113488931A (en) * 2021-07-13 2021-10-08 江苏恒高电气制造有限公司 Gas insulated transmission line high-fall shaft mounting structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2450813Y (en) * 2000-10-30 2001-09-26 郭道华 Shaft bus assembly
CN2759971Y (en) * 2004-07-09 2006-02-22 青岛理工大学 Overwind-proof safety arrangement of shaft well lifting apparatus
CN201398021Y (en) * 2009-05-11 2010-02-03 中国水电顾问集团西北勘测设计研究院 Installation and lifting device of gas insulation metal closing transmission line in shaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2450813Y (en) * 2000-10-30 2001-09-26 郭道华 Shaft bus assembly
CN2759971Y (en) * 2004-07-09 2006-02-22 青岛理工大学 Overwind-proof safety arrangement of shaft well lifting apparatus
CN201398021Y (en) * 2009-05-11 2010-02-03 中国水电顾问集团西北勘测设计研究院 Installation and lifting device of gas insulation metal closing transmission line in shaft

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