CN110474248B - Installation method of booster station of wind power and photovoltaic power generation system - Google Patents
Installation method of booster station of wind power and photovoltaic power generation system Download PDFInfo
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- CN110474248B CN110474248B CN201910879715.1A CN201910879715A CN110474248B CN 110474248 B CN110474248 B CN 110474248B CN 201910879715 A CN201910879715 A CN 201910879715A CN 110474248 B CN110474248 B CN 110474248B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000009434 installation Methods 0.000 title claims abstract description 34
- 238000010248 power generation Methods 0.000 title claims abstract description 15
- 238000003780 insertion Methods 0.000 claims abstract description 30
- 230000037431 insertion Effects 0.000 claims abstract description 30
- 238000002788 crimping Methods 0.000 claims abstract description 27
- 210000001503 joint Anatomy 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 238000010008 shearing Methods 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 6
- 241000271510 Agkistrodon contortrix Species 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F1/00—Combination or multi-purpose hand tools
- B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
- Processing Of Terminals (AREA)
Abstract
The installation method of the booster station of the wind power and photovoltaic power generation system comprises the steps of adopting a foundation adjustment method and a first interval positioning method, firstly finding out the highest point of a metal embedded part, adjusting the first interval installation foundation height by using a gasket, presetting the foundation heights of other intervals according to the first interval installation foundation height, taking a bus-tie interval as an installed first interval, and starting to install the bus-tie interval to two sides; the method can reduce GIS installation accumulation errors and ensure the tightness of GIS; before the butt joint interval, the contact insertion depth is calculated, the insertion depth of the conductor and the contact seat is confirmed, and the requirements of GIS sealing degree and the safety of the plug are ensured; the multifunctional pliers are adopted to facilitate the rapid pressing and separation of the flanges between the intervals, so that the damage to the equipment contacts caused by the separation of the flanges is avoided; the multifunctional pliers are also provided with a cable shearing function and a cable head crimping function, and can be used for multifunctional use in other electrical construction.
Description
Technical Field
The invention relates to a construction technology of a transformer substation of an electric power and metallurgy system, in particular to a booster station core device of a wind power generation and photovoltaic power generation system, namely construction of a booster transformer and a GIS combined electrical apparatus.
Background
With the development of technology, wind power and photovoltaic power generation are gradually popularized, a plurality of reforming or newly-built booster stations are eliminated from the original AIS (open type) structure, the capacity of a transformer is also improved, the prior construction method cannot meet the requirements of modern power development, and the mounting method of the booster transformer and the GIS is a new technology which is required to be mastered by the modern power mounting industry.
In large-scale transformer stations such as 220KV/66KV, 110KV/66KV or 66KV/10KV, along with the capacity increase of booster stations, the transformer installation is gradually replaced by the traditional crane or manual hydraulic installation, the GIS is also applied from the beginning abroad, the GIS is gradually popularized by the booster station system in China, the advantages of the GIS are recognized by us, and the possession of the GIS at home and abroad is continuously increased. The GIS installation method and the standard are not standardized in China, and the standards of various manufacturing enterprises are different, so that the difficulty is increased for the construction enterprises.
Disclosure of Invention
The invention aims to provide a mounting method of a booster station of a wind power and photovoltaic power generation system, which improves the mounting precision and equipment safety, reduces GIS mounting accumulation errors, adopts guide pins for guiding in order to prevent screw holes from deviating during docking, and greatly reduces docking difficulty; meanwhile, the insertion depth of the conductor and the contact seat is confirmed, the rapidness, the accuracy and the reliability of the butt joint of the flange are ensured, and the damage to equipment during the butt joint is eliminated.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the installation method of the booster station of the wind power and photovoltaic power generation system comprises the following steps of:
1) Firstly, installing a GIS foundation, wherein the ground bearing capacity of the installed GIS foundation is not less than 10t, and the adjustment method of the foundation height is as follows:
a) According to the basic height of each interval actually measured, the highest point of the metal embedded part is found out, the height of the point is marked as L, the first interval installation basic height is adjusted by using a gasket, the height of the point after adjustment is marked as L '", and the first interval basic height adjustment range is L' =L+ (5-10) mm;
b) Calculating the difference between the upper end surfaces of other embedded parts in the foundation and the height of the other embedded parts by taking the actual height of the highest point of the adjusted head interval foundation metal embedded parts as a reference;
c) The heights of other foundation embedded parts are adjusted through the gaskets, so that the heights of the other foundation embedded parts are controlled within the range of L' - (1-2) mm;
d) The number of the gaskets on each foundation is at most 3;
2) Calculating the insertion depth of the contact: the three-phase conductor is required to be inserted to a depth, the allowance after insertion is not less than 5mm, and the size of the residual gap after insertion is not less than 5mm; the distance L from the end face of the conductor to the flange end face of the shell on the same side, the distance R from the end face of the contact seat to the flange end face of the shell on the same side and the depth R1 of the contact seat are measured, the insertion depth of the conductor and the contact seat is calculated, and the calculation methods are as follows: the residual after insertion is (R-L) mm, and the residual gap size after insertion is [ R1- (R-L) ] mm;
3) The contact insertion depth meets the design requirement, hoisting assembly between intervals is started, a bus-tie interval is selected as a first interval for installation, and after the bus-tie interval is installed, the two sides of the bus-tie interval are installed;
4) The assembly method between the intervals is as follows: the bus-tie interval is firstly lifted and installed on the foundation, and then other intervals are sequentially installed on two sides respectively by taking the bus-tie interval as a reference. During installation, the corresponding interval is lifted to an installation position through a crane, so that the shell flange is opposite to the female connection interval shell flange in position, the two shell flanges are positioned through guide pins inserted into butt joint bolt holes of the two shell flanges, then the two shell flanges are pushed to be close to each other through a multifunctional clamp, the accurate butt joint of the two shell flanges is completed, and finally the side interval is fixed on a foundation, so that other intervals are installed on two sides of the female connection interval in a pushing manner.
A multifunctional clamp used in a mounting method of a booster station GIS of a wind power and photovoltaic power generation system comprises a static clamp head, a dynamic clamp head, a screw rod, a reduction gear, a direct current motor and a handle; a dovetail groove is arranged on the butt joint surface between the static binding clip and the movable binding clip; the flange pressing die is provided with a lug matched with the dovetail groove in shape; one side of the flange separating die is provided with a convex block matched with the dovetail groove in shape, and one end of the flange separating die is provided with a triangular separating pin.
The cable cutting device comprises a cable cutting die, wherein a lug matched with the dovetail groove in shape is arranged on one side of the cable cutting die, a cutting edge is arranged on the other side of the cable cutting die, and a circular arc-shaped groove is formed in the cutting edge.
The cable head crimping die is characterized by further comprising a cable head crimping die, one side of the cable head crimping die is provided with a lug matched with the dovetail groove in shape, and the other side of the cable head crimping die is provided with a notch crimped with the cable head.
Compared with the prior art, the invention has the beneficial effects that:
1) The method comprises the steps of adopting a basic adjustment method and a first interval positioning method, firstly finding out the highest point of a metal embedded part, adjusting the first interval installation basic height by using a gasket, presetting the other interval basic heights according to the first interval installation basic height, taking a bus-tie interval as an installation first interval, and starting to install the bus-tie interval to two sides after installing the bus-tie interval; the method can reduce GIS installation accumulation errors and ensure the tightness of GIS;
2) Before the butt joint interval, the contact insertion depth is calculated, the insertion depth of the conductor and the contact seat is confirmed, and the requirements of GIS sealing degree and the safety of the plug are ensured;
3) During butt joint, one side is fixed, the other side is hung, and guide pins are used for guiding, so that the butt joint difficulty of the flange is greatly reduced; simultaneously, the multifunctional pliers are used for pressing the two flanges, so that the contacts are accurately butted, the rapidity, the accuracy and the reliability of the butt joint of the flanges are ensured, the damage to equipment during butt joint is eliminated, and the installation precision and the equipment safety are improved;
4) The multifunctional pliers are also provided with a flange separation function, so that the flanges can be separated quickly during separation and disassembly, and damage to equipment contacts during flange separation is avoided; the multifunctional pliers are also provided with a cable shearing function and a cable head crimping function, and can be used for multifunctional use in other electrical construction.
5) The construction method of the invention can be also suitable for the electrical construction of GIS substations with various types of indoor, outdoor and different voltage levels and the special construction of substations with other types.
Drawings
FIG. 1 is a top-spaced installation locator map of the present invention;
FIG. 2 is a graph of calculated measurements of the contact insertion depth at flange docking in accordance with the present invention;
FIG. 3 is a diagram of a center of gravity balanced hoist when the combined electrical apparatus is docked;
FIG. 4 is a schematic view of the structure of the multifunctional pliers of the present invention;
FIG. 5 is a schematic view of a nose dovetail slot.
Fig. 6 is a top view of a flange compaction tool.
Fig. 7 is a side view of a flange compaction tool.
Fig. 8 is a top view of a flange separation die.
Fig. 9 is a side view of a flange separation die.
Fig. 10 is a top view of the cable cutting die.
Fig. 11 is a side view of a cable cutting die.
Fig. 12 is a top view of a cable crimping die.
Fig. 13 is a side view of a cable crimping die.
Fig. 14 is a circuit diagram of a dc motor dual phase governor control.
In the figure: 1-static binding clip, 2-movable binding clip, 3-lead screw, 4-reduction gear, 5-direct current motor, 6-battery, 7-crimping opening, 8-handle, 9-lifting rope, 10-manual hoist, 11-conductor, 12-contact seat, 13-shell flange, 14-dovetail groove, 15-lug, 16-separating pin, 17-shearing blade, 18-convex recess, 19-bidirectional potentiometer, 20-potentiometer button pivot, 21-jaw closing limit switch, 22-jaw opening limit switch, 23-closing direction control speed regulation button, 24-opening direction rotation control speed regulation button.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
referring to fig. 1-13, a method for installing a booster station of a wind power and photovoltaic power generation system comprises the following steps:
1) Firstly, installing a GIS foundation, wherein the ground bearing capacity of the installed GIS foundation is not less than 10t, and the adjustment method of the foundation height is as follows:
a) According to the basic height of each interval actually measured, the highest point of the metal embedded part is found out, the height of the point is marked as L, the first interval installation basic height is adjusted by using a gasket, the height of the point after adjustment is marked as L '", and the first interval basic height adjustment range is L' =L+ (5-10) mm;
b) Calculating the difference between the upper end surfaces of other embedded parts in the foundation and the height of the other embedded parts by taking the actual height of the highest point of the adjusted head interval foundation metal embedded parts as a reference;
c) The heights of other foundation embedded parts are adjusted through the gaskets, so that the heights of the other foundation embedded parts are controlled within the range of L' - (1-2) mm;
d) The number of the gaskets on each foundation is at most 3;
2) Calculating the insertion depth of the contact: tightness is the key of GIS insulation, and SF6 gas leakage can cause GIS fatal faults. The tightness check should therefore be throughout the entire manufacture and installation. The sealing effect mainly depends on the welding quality of the tank body, and secondly, the manufacturing, installation and adjustment conditions of the sealing ring can be tested through local and overall pressurizing active tests and SF6 gas leak detectors passive tests, so that the tightness is detected. In addition, confirming the insertion depth of the conductor and the contact seat is also a measure for assisting in detecting the seal. The three-phase conductor is required to be inserted to a depth, the allowance after insertion is not less than 5mm, and the size of the residual gap after insertion is not less than 5mm; as shown in fig. 2, the distance L from the end face of the conductor 11 to the end face of the same-side housing flange 13, the distance R from the end face of the contact base 12 to the end face of the same-side housing flange 13, and the depth R1 of the contact base 12 are measured, and the insertion depths of the conductor 11 and the contact base 12 are calculated by the following methods: the residual after insertion is (R-L) mm, and the residual gap size after insertion is [ R1- (R-L) ] mm;
3) The contact insertion depth meets the design requirement, hoisting assembly between intervals is started, a bus-tie interval is selected as a first interval for installation in order to reduce installation accumulation errors, and after the bus-tie interval is installed, the two sides of the bus-tie interval are started to be installed;
the specific operation steps are as follows: a. hoisting the bus-tie interval, and setting the interval on the foundation according to the center line (the center line of the main bus and the center line of the interval); b. the spacing position is adjusted and the spacing is kept horizontal. c. The interval center is aligned with the bus bar center line and the interval center line. The deviation between the X-direction interval center and the basic center is not more than 3mm, and the allowable accumulated deviation of the whole transformer substation is less than 20mm; the deviation between the Y direction and the basic center is not more than 10mm; the difference of the height differences between every two intervals is not more than 1mm, and the deviation of the vertical plane of the whole engineering main bus from the central line (Z direction) of the main bus is less than 5mm. d. The level and position of the head space determines the theoretical axis of the overall GIS arrangement and is therefore not recommended to be adjusted by reducing the number of shims on the basis when the head space is adjusted horizontally. (see FIG. 1).
4) The assembly method between the intervals is as follows: the bus-tie interval is firstly lifted and installed on a foundation (the bus-tie interval is an interval of a middle position), and then other intervals are sequentially installed on two sides respectively by taking the bus-tie interval as a reference. During installation, the corresponding space is lifted to an installation position (shown in fig. 3) through a crane, so that the positions of the shell flanges are opposite to those of the shell flanges at the bus-tie space, the two shell flanges are positioned through the guide pins inserted into the butt-joint bolt holes of the two shell flanges, then the two shell flanges are pushed to be close to each other through a multifunctional clamp, the accurate butt-joint of the two shell flanges is completed, the side space is finally fixed on a foundation, and other spaces are installed at the two sides of the bus-tie space in a pushing manner.
When the flange separating die is detached, the connection between one interval and the foundation is detached, the flange separating die is slightly lifted by a crane, two or more multifunctional pliers are uniformly distributed in the circumferential direction of the flange, and the flange of the two shells is peeled off by the flange separating die.
The hoisting equipment adopts two kinds of bridge crane or truck crane. The carrying capacity of all lifting devices is selected according to the weight of a lifting object, the carrying capacity of the bridge crane is not less than 5t, and the lifting weight of the automobile is determined according to the lifting distance, so that a certain margin is required. The bridge crane requires lifting height to be more than 4.5 meters, the automobile crane is determined according to the outdoor space, a 25-ton crane is generally selected to be suitable when the distance is slightly far, no matter which lifting mode is adopted, the included angle of a lifting belt is not more than 75 degrees, the inclination of equipment is less than 5 degrees, the bearing capacity of a lifting rope is more than 1.5 times of the weight of a product, and a flexible hanging belt is selected.
And measuring the contact resistance of each contact surface of the primary grounding loop in a multipoint grounding mode, and connecting two sides of each flange connection part of the GIS with jumper wires and grounding. The resistance value is required to be not more than 0.5. Mu.OMEGA (excluding the flange face).
A multifunctional clamp (see figure 4) used in an installation method of a booster station GIS of a wind power and photovoltaic power generation system comprises a static clamp head 1, a dynamic clamp head 2, a screw rod 3, a reduction gear 4, a direct current motor 5 and a handle 8; a dovetail groove 14 is arranged on the butt joint surface between the static clamp head 1 and the movable clamp head 2; the flange pressing die is provided with a lug 15 matched with the dovetail groove 14 in shape; one side of the flange separating die is provided with a convex block 15 matched with the dovetail groove 14 in shape, and one end of the flange separating die is provided with a triangular separating pin 16.
The static binding clip 1 is fixed at one end of a clamp frame, the movable binding clip 2 slides on the clamp frame, the other side of the movable binding clip 2 is connected with the screw rod 3, the reduction gear 4 is connected with the screw rod 3 through threads, a gear is fixed on an output shaft of the direct current motor 5, and the gear on the direct current motor 5 is meshed with the reduction gear 4 to drive the reduction gear 4 to rotate. The handle 8 is a hand-held position during operation, and an anti-slip finger nest is arranged on the handle. A battery is also mounted on the handle 8 to provide power for the dc motor 5. The two jaws each have a dovetail groove 14 (as shown in fig. 5) for mounting a die, and various dies can be mounted to the jaws through the dovetail grooves 14. The direct current motor 5 can be controlled in a forward and reverse rotation manner, and as shown in fig. 14, the direct current motor 5 is provided with a direct current motor driver, the difference between the two input ends controls the rotation direction and the rotation speed of the direct current motor 5, the larger the difference is, the faster the speed is, the difference is 0, the difference is regular positive rotation, and the difference is negative rotation. When the device is used, the speed regulating button 23 is controlled by pressing the closing direction to drive the biphasic potentiometer 19 to rotate, positive and negative given voltage output is arranged at the b end of the potentiometer 19, the rotating direction and speed of the direct current motor D are controlled, the more the button is pressed down, the higher the rotating speed is, when the jaws are closed in place, the jaw closing limit switch 21 is opened to stop the closing movement, and when the jaws are opened in place, the jaw opening limit switch 22 is opened to stop the opening movement.
In the process of flange butt joint, a flange pressing die (a piece shown in fig. 6 and 7) is firstly installed in a dovetail groove 14 of a clamp head, a static clamp head 1 and a movable clamp head 2 are clamped on the outer side of a shell flange 13, 2 multifunctional clamps can be symmetrically arranged on the circumferential direction of the shell flange 13, then a direct current motor 5 is operated in the forward direction, the movable clamp head 2 moves towards the static clamp head 1, the two shell flanges are pushed to be close to each other, and finally the aim of accurate butt joint is achieved, so that the accurate insertion of a conductor 11 contact is ensured. The pressing die can also be used for pressing and manufacturing in other electrical construction.
The flange separating mold (as shown in fig. 8 and 9) is firstly installed in the dovetail groove 14 of the clamp head, two tips of the flange separating mold can be inserted into a gap at the joint of two flange plates in the flange disassembling process, 2 multifunctional clamps can be symmetrically arranged in the circumferential direction of the shell flange 13, then the direct current motor 5 is reversely operated to enable the movable clamp head 2 to move towards the opposite direction of the static clamp head 1, and in the moving process, the tips of the clamp head are gradually inserted along with the enlargement of the gap, so that the two flange plates are gradually separated, and finally, the aim of safely pulling out the GIS contact is achieved. The separating die can also be used for separating equipment in other electrical construction.
The cable cutting device further comprises a cable cutting die (see fig. 10 and 11), wherein one side of the cable cutting die is provided with a convex block 15 matched with the dovetail groove 14 in shape, the other side of the cable cutting die is provided with a cutting edge 17, and the cutting edge 17 is provided with a circular arc-shaped groove 18. The circular arc grooves 18 of the two cable shearing dies are staggered by a certain distance.
In the flange disassembly process, if the cable needs to be cut, the cable can be sheared by using a cable shearing die. Firstly, a cable shearing die is installed in dovetail grooves 14 of two clamp heads, then a cable to be cut is placed in a circular arc-shaped groove 18 of the cable shearing die, a sharp shearing edge is arranged in the circular arc-shaped groove 18, a direct current motor 5 is operated in the forward direction, the clamp heads are gradually folded, and the cable is sheared. The cable shearing die can also be used for shearing in other electrical construction.
The cable head crimping die is characterized by further comprising a cable head crimping die (part figures 12 and 13), wherein one side of the cable head crimping die is provided with a lug 15 matched with the dovetail groove 14 in shape, and the other side of the cable head crimping die is provided with a cable head crimping notch 7. The two crimping openings 7 are combined together to form a regular hexagon.
In the cable copper head manufacturing process, the cable head crimping die can be utilized for copper head crimping. Firstly, a cable head crimping die is installed in a dovetail groove 14 of a clamp head, then a copper head to be crimped is placed at a crimping notch 7 of the cable head crimping die, a direct current motor 5 is operated in the forward direction, the clamp head is gradually folded, and the cable is firmly crimped at the crimping notch 7. The cable head crimping die can also be used for crimping manufacture in other electrical construction.
Claims (3)
1. The installation method of the booster station of the wind power and photovoltaic power generation system is characterized by comprising the following steps of:
1) Firstly, installing a GIS foundation, wherein the ground bearing capacity of the installed GIS foundation is not less than 10t, and the adjustment method of the foundation height is as follows:
a) According to the basic height of each interval actually measured, the highest point of the metal embedded part is found out, the height of the point is marked as L, the first interval installation basic height is adjusted by using a gasket, the height of the point after adjustment is marked as L '", and the first interval basic height adjustment range is L' =L+ (5-10) mm;
b) Calculating the difference between the upper end surfaces of other embedded parts in the foundation and the height of the other embedded parts by taking the actual height of the highest point of the adjusted head interval foundation metal embedded parts as a reference;
c) The heights of other foundation embedded parts are adjusted through the gaskets, so that the heights of the other foundation embedded parts are controlled within the range of L' - (1-2) mm;
d) The number of the gaskets on each foundation is at most 3;
2) Calculating the insertion depth of the contact: the insertion depth of the three-phase conductor is required, the allowance is not less than 5mm, and the size of the residual gap after insertion is not less than 5mm; the distance L from the end face of the conductor to the flange face of the shell on the same side, the distance R from the end face of the contact seat to the flange face of the shell on the same side and the depth R1 of the contact seat are measured, the insertion depth of the conductor and the contact seat is calculated, and the calculation methods are as follows: the residual after insertion is (R-L) mm, and the residual gap size after insertion is [ R1- (R-L) ] mm;
3) The contact insertion depth meets the design requirement, hoisting assembly between intervals is started, a bus-tie interval is selected as a first interval for installation, and after the bus-tie interval is installed, the two sides of the bus-tie interval are installed;
4) The assembly method between the intervals is as follows: firstly, hoisting and installing the bus-tie interval on a foundation, and then sequentially installing other intervals on two sides respectively by taking the bus-tie interval as a reference; during installation, the corresponding interval is lifted to an installation position by a crane, so that the positions of the shell flanges are opposite to those of the female coupling interval shell flanges, the two shell flanges are positioned by inserting guide pins into butt joint bolt holes of the two shell flanges, then the two shell flanges are pushed to be close to each other by a multifunctional clamp, the accurate butt joint of the two shell flanges is completed, finally the side interval is fixed on a foundation, and other intervals are installed on two sides of the side interval;
A multifunctional clamp used in an installation method of a booster station of a wind power and photovoltaic power generation system comprises a static clamp head, a dynamic clamp head, a screw rod, a reduction gear, a direct current motor and a handle; a dovetail groove is arranged on the butt joint surface between the static binding clip and the movable binding clip; the flange pressing die is provided with a lug matched with the dovetail groove in shape; a convex block matched with the dovetail groove in shape is arranged on one side of the flange separating die, and a triangular separating pin is arranged at one end of the flange separating die;
In the process of flange butt joint, a flange pressing die is firstly installed in a dovetail groove of a clamp head, a static clamp head and a movable clamp head are clamped at the outer side of a shell flange, 2 multifunctional clamps are symmetrically arranged in the circumferential direction of the shell flange, then a direct current motor is operated in the forward direction, the movable clamp head moves towards the static clamp head to push the two shell flanges to be close to each other, and finally the aim of accurate butt joint is achieved, so that the accurate insertion of a conductor contact is ensured;
The flange separating die is firstly arranged in a dovetail groove of the clamp head, two tips of the flange separating die are inserted into gaps at the joint of two flange plates in the flange disassembling process, 2 multifunctional clamps are symmetrically arranged in the circumferential direction of the flange of the shell, then the direct current motor is operated reversely to enable the movable clamp head to move towards the opposite direction of the static clamp head, in the moving process, the tips of the clamp head are gradually inserted along with the enlargement of the gaps, the two flange plates are gradually separated, and finally the aim of safely pulling out the GIS contact is achieved.
2. The method for installing the booster station of the wind power and photovoltaic power generation system according to claim 1, further comprising a cable shearing die, wherein a convex block matched with the dovetail groove in shape is arranged on one side of the cable shearing die, a shearing blade is arranged on the other side of the cable shearing die, and a circular arc-shaped groove is formed in the shearing blade.
3. The method for installing the booster station of the wind power and photovoltaic power generation system according to claim 1, further comprising a cable head crimping die, wherein one side of the cable head crimping die is provided with a lug matched with the dovetail groove in shape, and the other side of the cable head crimping die is provided with a notch for crimping the cable head.
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| CN110474248B true CN110474248B (en) | 2024-05-14 |
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