CN215291305U - Hydroelectric station generator overhauls combination platform - Google Patents

Abstract

The utility model discloses a power station generator overhauls combination platform, including the foundation ditch maintenance platform, the foundation ditch maintenance platform includes the under bracing frame and installs a plurality of lower pedals on the under bracing frame, and a plurality of lower pedal levels set up at a supporting beam's top and connect gradually and constitute a horizontal plane, and the horizontal plane that a plurality of lower pedals are constituteed is the circular that suits with the foundation ditch shape. The maintainer can get into and stand and overhaul equipment and generator stator in the foundation ditch on the footboard down, and the maintainer activity space is big on the foundation ditch overhauls the platform, and other equipment are placed to the convenient maintenance to the generator on the foundation ditch overhauls the platform, convenient and all-round maintenance to the stator.

Description

Hydroelectric station generator overhauls combination platform

Technical Field

The utility model relates to a power station generating set overhauls equipment technical field, in particular to power station generator overhauls combination platform.

Background

In the maintenance work of the generator of the hydropower station, the maintenance of the stator of the generator is a relatively complex project. Because the stator of power station generating set is great and fixed mounting in the installation foundation ditch of generator usually, therefore the maintenance of stator generally keeps the stator to overhaul in former mounted position, is about to keep the stator motionless in former mounted position, demolishs frame, rotor, lower frame, runner, top cap etc. on the generator and hangs out the foundation ditch, then overhauls the stator.

Because the size of stator is great and the foundation ditch is darker, when using equipment such as staircase, crane to send into the stator with maintainer and overhaul the stator in, the potential safety hazard is big, and the maintainer needs the complicated cooperation of crane when carrying out 360 overhauls to the stator inboard, and maintenance efficiency is low and overhaul the coverage and poor, produces easily and overhauls the dead angle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power station generator overhauls combination platform, its advantage is used for the maintenance work to power station generator stator, is convenient for carry out full angle, efficient maintenance to the stator.

The above object of the utility model is realized through following technical scheme, a power station generator overhauls combination platform, including the foundation ditch maintenance platform, the foundation ditch maintenance platform includes the lower carriage and installs a plurality of lower pedals on the lower carriage, and a plurality of lower pedal levels set up at a supporting beam's top and connect gradually and constitute a horizontal plane, and the horizontal plane that a plurality of lower pedals are constituteed is the circular that suits with the foundation ditch shape.

Through above-mentioned technical scheme, place the foundation ditch bottom at the power station generator with foretell foundation ditch maintenance platform, maintainer can get into and stand and overhaul equipment and generator stator in the foundation ditch on the footboard down afterwards, and maintainer activity space is big on the foundation ditch maintenance platform, and the convenience is to the maintenance of generator, places other equipment on the foundation ditch maintenance platform, the convenience and the all-round maintenance to the stator.

The utility model discloses further set up to, the under bracing frame includes girder and the auxiliary girder of a plurality of parallels, girder and auxiliary girder mutually perpendicular, and the bottom of footboard is equipped with the erection column down, and the top of girder and auxiliary girder is equipped with positioning sleeve, positioning sleeve and erection column one-to-one, during the erection column inserted positioning sleeve.

Through above-mentioned technical scheme, girder and auxiliary girder stable in structure, footboard under the support that can be fine, after the installation of footboard under the main, the erection column is inserted into the position sleeve, and the footboard is difficult for sliding down, and stability is good.

The utility model discloses further set up to, the tip of auxiliary girder is equipped with the inserted bar, is equipped with on the girder and supplies inserted bar male installation intubate, still is equipped with between installation intubate and the inserted bar and is used for the fixed bolt.

Through the technical scheme, the main beam and the auxiliary beam are connected and then are stable in relative position and not prone to deformation, and the main beam and the auxiliary beam are convenient and fast to connect and assemble and disassemble.

The utility model discloses further set up to, girder and auxiliary girder are the triangular truss structure in cross-section.

The utility model discloses further set up to, the girder is the triangular truss structure in cross-section, the auxiliary girder is planar frame structure.

The utility model discloses further set up to, still include four internal guardrails of group, internal guardrail is planar frame structure, and the internal guardrail is arranged in inserting the position sleeve of under bracing frame middle part position and forms the rectangle rail.

Through above-mentioned technical scheme, there is a through-hole that is used for hoisting the hydraulic turbine in the foundation ditch middle part of power station generator, consequently, when needs hoist and mount the hydraulic turbine, need demolish the lower pedal of middle part position, at this moment, with well body guardrail installation on the under bracing frame form the rail around the vacating position, can avoid the staff to drop, improve the security.

The utility model discloses further set up to, still include the stator and overhaul the platform, the stator overhauls the platform and is used for placing on the foundation ditch overhauls the platform, the stator overhauls the platform and includes annular upper bracket and sets up a plurality of footboard that go up at upper bracket top, and a plurality of footboard that go up connect gradually and constitute an annular horizontal plane, and the shape of annular horizontal plane suits with the interior circle of stator.

Through above-mentioned technical scheme, place upper bracket on foundation ditch overhauls the platform, maintainer can stand and overhaul the stator on last footboard, is convenient for carry out 360 degrees overhauls to the stator, and the convenience is to the maintenance of stator and improve maintenance efficiency.

The utility model discloses further set up to, upper bracket includes a plurality of door type supports that are the annular and arrange, and door type support includes two vertical stands, is equipped with the horizontal pole between two stands, and upper pedal fixed connection is on door type support.

Through the technical scheme, the upper support frame is formed by combining the plurality of door-shaped supports, the structure of the upper support frame is simplified, and the upper support frame is convenient to assemble and disassemble.

The utility model discloses further set up to, still include the staircase and down the staircase, go up the staircase setting between last footboard and generator stator top, the staircase setting is between last footboard and foundation ditch maintenance platform down.

Through above-mentioned technical scheme, set up the staircase and make things convenient for the maintainer to get into down the staircase.

To sum up, the beneficial effects of the utility model are that:

1. the maintenance operation of equipment and a stator in a foundation pit of the generator of the hydropower station is facilitated, and the maintenance efficiency is improved;

2. the components are simple to connect, convenient to assemble and disassemble and wide in application range;

3. the safety of maintainers is improved, and accidents in the maintenance operation of the generator of the hydropower station are reduced;

4. the combined platform has simple structure, clear weight and modularized arrangement, and is convenient for assembly and hoisting;

5. in a hydroelectric power station, the generators are basically similar in structure and differ only in size, so that the use requirements of the individual hydroelectric power stations can be met by only appropriately changing the size.

Drawings

FIG. 1 is a cross-sectional view of a hydroelectric power plant generator installation foundation pit;

fig. 2 is a schematic overall structure diagram of a first embodiment of the present invention;

fig. 3 is a schematic structural view of a lower supporting frame in an embodiment of the present invention;

fig. 4 is a schematic structural view of one of the main beams in the embodiment of the present invention;

fig. 5 is a schematic view of one of the truss structure secondary beams in an embodiment of the invention;

fig. 6 is a schematic view of a plane frame structure secondary beam in an embodiment of the present invention;

FIG. 7 is a schematic view of a rectangular lower pedal in an embodiment of the present invention;

FIG. 8 is a schematic view of a trapezoidal shaped lower pedal in an embodiment of the present invention;

FIG. 9 is a schematic view of a triangular lower pedal of an embodiment of the present invention;

fig. 10 is a schematic view of a mid-body guard rail in an embodiment of the present invention;

fig. 11 is a schematic view of the overall structure of a stator overhaul platform in the second embodiment of the present invention;

fig. 12 is a side view of a stator overhaul platform in the second embodiment of the present invention;

fig. 13 is a top view of a stator maintenance platform according to a second embodiment of the present invention;

FIG. 14 is a schematic view of a door type bracket according to a second embodiment of the present invention;

fig. 15 is a schematic view of an upper pedal in the second embodiment of the present invention;

fig. 16 is a schematic view of a guard rail according to a second embodiment of the present invention;

fig. 17 is a schematic view of a horizontal pull rod according to a second embodiment of the present invention.

In the figure, 1, an upper support frame; 11. a gantry support; 111. a column; 112. a cross bar; 113. a base; 114. A shock pad; 115. installing a sleeve; 116. an anti-collision strip; 12. a horizontal pull rod; 121. a bolt; 2. an upper pedal; 21. an inner baffle; 22. an outer baffle; 23. a guardrail seat; 24. a positioning column; 3. going to an escalator; 4. moving down the escalator; 5. protecting the fence; 6. a safety barrier; 100. a stator overhaul platform; 700. a foundation pit maintenance platform; 7. a lower support frame; 71. a main beam; 711. installing a cannula; 72. a secondary beam; 721. inserting a rod; 73. a positioning sleeve; 8. a lower pedal; 81. mounting a column; 9. middle body guard rail.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The first embodiment is as follows: referring to fig. 1-10, a hydropower station generator maintenance combined platform comprises a foundation pit maintenance platform 700, wherein the foundation pit maintenance platform 700 comprises a lower support frame 7 and a plurality of lower pedals 8 installed on the lower support frame 7, the plurality of lower pedals 8 are horizontally arranged at the top of a support beam and are sequentially connected to form a horizontal plane, and the horizontal plane formed by the plurality of lower pedals 8 is circular and is matched with the shape of a foundation pit. As known from the background art, when a stator of a generator in a hydropower station is overhauled, parts in the generator are lifted out to leave an empty foundation pit, and the stator of the generator is positioned above the foundation pit (refer to fig. 1). The size of foundation pit overhauls platform 700 should satisfy and to put into the foundation ditch in, place foretell foundation pit overhauls platform 700 in the foundation ditch bottom of power station generator, maintainer can get into and stand and overhaul equipment and generator stator in the foundation ditch on footboard 8 down afterwards, maintainer activity space is big on foundation pit overhauls platform 700, the convenient maintenance to the generator, place other equipment on foundation pit overhauls platform 700, the convenience with all-round maintenance to the stator.

The lower support frame 7 comprises a plurality of parallel main beams 71 and a plurality of parallel auxiliary beams 72, the main beams 71 and the auxiliary beams 72 are perpendicular to each other, the peripheral end points of the main beams 71 and the auxiliary beams 72 should be in a common circle or an approximate common circle, and the peripheral end points are adapted to a circular plane formed by combining the lower pedals 8 so as to support the lower pedals 8. The bottom of footboard 8 is equipped with the erection column 81 down, and the top of main beam 71 and auxiliary beam 72 is equipped with location sleeve 73, and location sleeve 73 and erection column 81 one-to-one, during erection column 81 inserted location sleeve 73, set up on every footboard 8 and be no less than two erection columns 81 to guarantee that footboard 8 installation back position is stable down. The main beam 71 and the auxiliary beam 72 are vertically arranged, so that the lower support frame 7 formed by the main beam 71 and the auxiliary beam 72 is stable in structure, and can well support the lower pedal 8.

The end of the auxiliary beam 72 is provided with an inserted bar 721, the main beam 71 is provided with an installation insertion tube 711 for inserting the inserted bar 721, a bolt for fixing is further arranged between the installation insertion tube 711 and the inserted bar 721, after the inserted bar 721 is inserted into the installation insertion tube 711, due to the fact that the inserted bar 721 and the installation insertion tube 711 are positioned left and right, the main beam 71 and the auxiliary beam 72 are connected and then are stable in relative position and not prone to deformation, the main beam 71 and the auxiliary beam 72 are connected conveniently and quickly, and assembling and disassembling are facilitated.

The main beam 71 and the secondary beam 72 are both of a triangular truss structure with a cross section. In addition, the sub-beam 72 may be a planar frame structure. In this embodiment, all the main beams 71 (4) and the auxiliary beams 72 located outside are triangular truss structures with cross sections, and the auxiliary beams 72 located between the main beams 71 adopt a planar frame structure, wherein the triangular truss structure with the cross section is composed of three steel pipes which are arranged in parallel and in a triangular shape, the three steel pipes are fixed by a plurality of connecting steel pipes, and at the end parts, triangular end face plates are arranged for edge sealing treatment, and the parts are formed by welding; the sub-beam 72 of the flat frame structure is also formed by welding steel pipes, which are circular or square steel pipes. The aforementioned mounting tube 711 is parallel to the main beam 71 and welded to the main beam 71, and the aforementioned positioning sleeve 73 is provided on the steel pipe at the topmost end of the main beam 71 or the secondary beam 72, and is also connected by welding.

In this embodiment, a plurality of lower pedals 8 of foundation pit overhaul platform 700 differ in shape, wherein, the lower pedal 8 that is located the middle part of foundation pit overhaul platform 700 is the rectangle, and the lower pedal 8 that is located the position around foundation pit overhaul platform 700 is triangle-shaped or trapezoidal to guarantee that the plane that lower pedal 8 constitutes is circular or near circular. The upper surface of the lower pedal 8 is provided with anti-skid lines for placing workers to slip.

There is a through-hole that is used for hoist and mount the hydraulic turbine in the middle part of the foundation ditch of power station generator, consequently, when the hydraulic turbine is hoisted to needs, need demolish the lower pedal 8 of middle part position, vacate a position in order to be used for hoist and mount the hydraulic turbine, at this moment, the staff on the foundation ditch maintenance platform 700 has the danger of landing, consequently the embodiment of the utility model provides an in still including four internal guardrails 9 of group, internal guardrail 9 is planar frame structure, and internal guardrail 9 is arranged in inserting the position sleeve 73 of 7 middle parts of under bracing frame and forms the rectangle rail, can avoid the staff to drop, improves the security.

The utility model provides a power station generator foundation ditch overhauls platform 700 should assemble in the factory building before the use, uses in hanging the foundation ditch of generator through the crane afterwards, will overhaul the platform and hang out after finishing using again, if need transport it or when saving, should dismantle it.

Example two: referring to fig. 1-17 a power station generator overhauls combination platform, on the basis of embodiment one, still include stator maintenance platform 100 in this embodiment, stator maintenance platform 100 is used for placing on foundation ditch maintenance platform 700, includes annular upper support frame 1 and sets up a plurality of upper pedals 2 at upper support frame 1 top, and a plurality of upper pedals 2 connect gradually and constitute an annular horizontal plane, and the shape of annular horizontal plane suits with the interior circle of stator. The size of stator maintenance platform 100 should satisfy and to put into the foundation ditch, place upper support frame 1 in the installation foundation ditch of generator, and the annular horizontal plane of going up 2 constitutions of footboard is located the stator inboard, and maintainer can stand and overhaul the stator on last footboard 2, is convenient for carry out 360 degrees overhauls to the stator, and the convenience is to the maintenance of stator and improve maintenance efficiency.

Specifically, the upper support frame 1 comprises a plurality of door-shaped supports 11 which are annularly arranged, each door-shaped support 11 comprises two vertical upright posts 111, a cross rod 112 is arranged between the two upright posts 111, and the upper pedal 2 is fixedly connected to the door-shaped supports 11. The upper support frame 1 is formed by combining a plurality of door-shaped supports 11, the structure of the upper support frame 1 is simplified, and the upper support frame 1 is convenient to assemble and disassemble.

The transverse rods 112 are arranged on the door-shaped support 11 in a plurality of groups which are spaced at equal intervals from top to bottom, the upright columns 111 and the transverse rods 112 can be connected by welding, and the door-shaped support 11 formed by the upright columns 111 and the transverse rods 112 exists as an inseparable unit. The height of the vertical columns 111 should be such that when the upper step plate 2 is mounted on the uppermost cross bar 112, a maintenance person standing on the upper step plate 2 can easily maintain the top of the stator. The stand 111 can be selected to use hollow square pipe, seals with the shrouding in stand 111's bottom, and the shrouding can the lug weld in stand 111's bottom. The bottom of the upright post 111 is provided with a base 113, the shape of the base 113 is selected to be circular, the diameter of the base 113 is larger than the diagonal length of the cross section of the upright post 111, and the base 113 is connected to a sealing plate at the bottom of the upright post 111 through a bolt, so that the base 113 is installed. The cover has shock pad 114 on base 113, and shock pad 114 selects the rubber material and directly the cladding on base 113, so the contact on stand 111 and ground is more stable, and stand 111 is difficult subaerial slip, improves the security that the stator overhauld platform 100.

And the outer side of the upright post 111 positioned at the periphery of the upper support frame 1 is provided with a crash bar 116. When adopting the form of integral hoisting will stator overhauls platform 100 and puts into or hangs from the generator foundation ditch, owing to overhauing rocking of platform, the interior surface and the damage stator of stator are collided easily to the edge of upper bracket 1, set up crashproof strip 116 and can cushion the striking of stand 111 to the stator, avoid damaging the stator. In this embodiment, the bumper strip 116 is a rubber strip with a length of about 50mm, and a group of the bumper strips is respectively arranged at the upper, middle and lower parts of the upright 111.

Still be connected with horizontal pull rod 12 and oblique pull rod between two stands 111 of adjacent door type support 11, stand 111 constitutes triangle-shaped truss structure with horizontal pull rod 12 and oblique pull rod, and whole upper bracket 1 is more firm. The diagonal draw bars are obliquely arranged, and two ends of the diagonal draw bars are arranged on two upright posts 111 of two adjacent door-shaped brackets 11 through bolts. The horizontal pull rod 12 is horizontally arranged, the side surface of the upright post 111 is provided with a mounting sleeve 115, two ends of the horizontal pull rod 12 are provided with bolts 121 perpendicular to the horizontal pull rod 12, and when the horizontal pull rod 12 is connected with the upright post 111, the bolts 121 are directly inserted into the mounting sleeves 115 on the two upright posts 111. The mounting sleeves 115 are arranged in groups at equal intervals on the upright 111 to facilitate selection of the appropriate height for connection to the horizontal tie 12.

The edge of the inner side of the upper support frame 1 is provided with a detachable protective guard 5. The guard rail 5 is used for carrying out safety protection on the maintainers on the upper pedal 2, so that the maintainers are prevented from falling off, and the use safety of the stator overhauling platform 100 is improved. Go up to be equipped with the mount pad on the footboard 2, the protection rod comprises the tubular metal resonator, and the bottom disect insertion of protection rod realizes connecting in the mount pad, can reuse the bolt to fix after the installation.

The inner side and the outer side of the upper pedal 2 are respectively provided with an inner baffle 21 and an outer baffle 22; the outer baffle 22 is shaped as an arc that fits the inner circle of the generator stator. Interior baffle 21 and outer baffle 22 constitute the border of footboard 2, avoid the maintainer to step on empty, the interior adaptation of circle of shape and the stator of outer baffle 22, consequently, go up that the distance between footboard 2 and the stator changes for a short time, conveniently overhauls the operation. The surface of the upper pedal 2 is provided with a plurality of anti-slip lines, so that the maintenance personnel are not easy to slip when standing. The bottom of the upper sliding plate is provided with a positioning column 24, and the positioning column 24 is installed in the installation sleeve 115 to connect the upper pedal 2 with the upright post 111.

The distance between the outer edge of the upper pedal 2 and the inner circle surface of the stator of the generator is not less than 10 cm and not more than 40 cm, and the optimal distance is 15 cm. If go up the footboard 2 and the stator between apart from the undersize, then the footboard easily the stator collision, if go up the footboard 2 and the stator between apart from too big, can increase maintainer's the maintenance degree of difficulty, set up the outward flange of footboard apart from the distance of the interior disc of generator stator between 10 centimetres to 40 centimetres, can guarantee to go up footboard 2 and be difficult for colliding with the stator, can make the maintainer of standing on last footboard 2 again and directly overhaul the stator.

Still include staircase 3 and lower staircase 4, go up staircase 3 and set up between last footboard 2 and generator stator top, lower staircase 4 sets up between last footboard 2 and generator foundation ditch bottom. The escalator 3 and the lower escalator 4 are arranged to facilitate access of maintainers. Safety guardrails 6 are arranged on two sides of the upper escalator 3 and the lower escalator 4.

The utility model provides a power station generator stator overhauls platform 100 should assemble in the factory building before the use, uses in hanging the foundation ditch of generator through the crane afterwards, will overhaul the platform and hang out after finishing using again, if need transport it or when saving, should dismantle it.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims (9)

1. The utility model provides a power station generator overhauls combination platform, a serial communication port, includes that foundation ditch overhauls platform (700), foundation ditch overhauls platform (700) include under bracing frame (7) and a plurality of footboard (8) down of installation on under bracing frame (7), and a plurality of footboard (8) levels set up at a supporting beam's top and connect gradually and constitute a horizontal plane, and the horizontal plane that a plurality of footboard (8) down are constituteed is circular for suiting with the foundation ditch shape.

2. The hydropower station generator overhaul combined platform according to claim 1, wherein the lower support frame (7) comprises a plurality of parallel main beams (71) and a plurality of parallel auxiliary beams (72), the main beams (71) and the auxiliary beams (72) are perpendicular to each other, mounting columns (81) are arranged at the bottoms of the lower pedals (8), positioning sleeves (73) are arranged at the tops of the main beams (71) and the auxiliary beams (72), the positioning sleeves (73) correspond to the mounting columns (81) in a one-to-one mode, and the mounting columns (81) are inserted into the positioning sleeves (73).

3. The hydroelectric power station generator overhaul combined platform as claimed in claim 2, wherein an insert rod (721) is arranged at the end of the secondary beam (72), an installation insertion pipe (711) for inserting the insert rod (721) is arranged on the main beam (71), and a bolt for fixing is further arranged between the installation insertion pipe (711) and the insert rod (721).

4. A hydroelectric generator service combination platform according to claim 3 in which the primary (71) and secondary (72) beams are each of triangular truss structure in cross-section.

5. A hydroelectric generator service combination platform according to claim 3 in which the primary beams (71) are triangular truss structures in cross-section and the secondary beams (72) are planar frame structures.

6. The hydropower station generator maintenance combined platform according to claim 1, further comprising four groups of middle body guardrails (9), wherein the middle body guardrails (9) are of a planar frame structure, and the middle body guardrails (9) are used for being inserted into the positioning sleeves (73) in the middle positions of the lower support frames (7) to form rectangular fences.

7. The hydroelectric station generator overhaul combined platform according to any one of claims 1 to 6, further comprising a stator overhaul platform (100), wherein the stator overhaul platform (100) is used for being placed on a foundation pit overhaul platform (700), the stator overhaul platform (100) comprises an annular upper support frame (1) and a plurality of upper pedals (2) arranged at the top of the upper support frame (1), the upper pedals (2) are sequentially connected to form an annular horizontal plane, and the shape of the annular horizontal plane is adapted to the inner circle of the stator.

8. The hydroelectric power station generator overhaul combined platform according to claim 7, wherein the upper support frame (1) comprises a plurality of door-shaped supports (11) which are arranged in a ring shape, each door-shaped support (11) comprises two vertical upright posts (111), a cross rod (112) is arranged between the two upright posts (111), and the upper pedal (2) is fixedly connected to the door-shaped supports (11).

9. The hydropower station generator overhaul combined platform according to claim 7, further comprising an upper escalator (3) and a lower escalator (4), wherein the upper escalator (3) is arranged between the upper pedal (2) and the top of the generator stator, and the lower escalator (4) is arranged between the upper pedal (2) and the foundation pit overhaul platform (700).

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