Detachable anti-vibration steel platform for connecting machine head platform and steam turbine island between steam turbines

Abstract

The utility model provides a detachable anti-vibration steel platform for connecting a machine head platform and a steam turbine island between steam turbines, which is reasonable in structural design and can simultaneously meet the requirements of closure, safety, detachability and vibration prevention. The load-bearing grating plate is placed on the load-bearing steel beams; supports are arranged at the left and right ends of the bearing steel beam; the bearing plate is fixed to the anchor plate, the limiting plate is fixed to the bearing plate, and the anchor bars are fixed to the back face of the anchor plate. The connecting structure of the left end of the bearing steel beam and the support is that the anchor bar is anchored into the steam turbine island to be fixed, the rubber support is fixed to the bearing plate, the sliding plate is fixed to the rubber support, the left end of the bearing steel beam is placed on the sliding plate, and the limiting plates are located on the two sides of the left end of the bearing steel beam. The connecting structure of the right end of the bearing steel beam and the support is that an anchor bar is anchored into a machine head platform in a steam turbine room to be fixed, limiting bolts are installed on the bearing plates, the right end of the bearing steel beam is placed on the bearing plates, the limiting bolts are fixed to the right end of the bearing steel beam, and the limiting plates are located on the two sides of the right end of the bearing steel beam.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of detachable anti-vibration steel platform for steam turbine room head platform and steam turbine island connection. BACKGROUND

[0002] Steam turbine room is one of the core parts of coal power plant, garbage power plant, biomass power plant and other energy type power plants, and is the place where steam turbine and generator are installed in power plant, which is the heart of power plant and also the brain of power plant, playing an important role in converting heat energy and mechanical energy into electric energy. The structural design of steam turbine room should meet the requirements of power generation equipment and ensure its safe and stable operation.

[0003] Due to process installation and maintenance requirements, there is often a large opening between the operating layer of steam turbine room and steam turbine island (steam turbine foundation) for installation and maintenance. When the steam turbine is in normal operation, the large opening often limits the movement of personnel, and personnel often have to make a large circle from the B row column cantilever platform of steam turbine room to the A row column cantilever platform. Moreover, the operating layer is often high from the ground, and the large opening of steam turbine room also poses a safety hazard of personnel falling, so more and more construction parties begin to use steel platform to temporarily seal these openings.

[0004] When the opening between the head platform and the steam turbine island is small, the flat grid plate can be directly used. When the installed capacity of power plant is large and multiple units coexist, due to equipment and pipeline arrangement problems, openings larger than the span of grid plate often appear, so a load-bearing steel beam is erected between the head platform and the steam turbine island to divide these openings. The traditional web bolt connection is usually used in the past connection method. When the steam turbine island operates and vibrates, it often causes the nearby steel platform to vibrate, which seriously affects the use of the steel platform. Moreover, the web bolt connection uses bolts as the main force receiving member. After a long time, the stress deforms, and it is often difficult to disassemble during maintenance. Moreover, repeated disassembly and assembly during maintenance can greatly reduce the bearing capacity of the force bolt. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome the above-mentioned deficiencies in the prior art, and provide a detachable anti-vibration steel platform for steam turbine room head platform and steam turbine island connection, which has reasonable structure design and can meet the requirements of closure, safety, detachability and anti-vibration at the same time.

[0006] The utility model discloses a technical scheme that solves the above problems is: detachable anti -vibration steel platform for the connection of turbine head platform and turbine island, including bearing grating plate and bearing steel beam, bearing grating plate places on bearing steel beam, its characterized in that: the left and right two ends of bearing steel beam all are provided with support, and the left end of bearing steel beam is connected with turbine island through support, and the right end of bearing steel beam is fixedly connected with turbine head platform through support, support includes bearing plate, anchor plate, limiting plate and anchor bar, bearing plate is fixed on anchor plate, limiting plate is fixed on bearing plate, and anchor bar is fixed on the back of anchor plate, the connecting structure of bearing steel beam left end and support is: anchor bar is anchored into turbine island fixed, and rubber support is fixed on bearing plate, and sliding plate is fixed on rubber support, and the left end of bearing steel beam is placed on sliding plate, and limiting plate is located on both sides of bearing steel beam left end, the connecting structure of bearing steel beam right end and support is: anchor bar is anchored into turbine head platform fixed, and limiting bolt is installed on bearing plate, and the right end of bearing steel beam is placed on bearing plate, and limiting bolt is fixed with the right end of bearing steel beam, and limiting plate is located on both sides of bearing steel beam right end.

[0007] The utility model discloses still including grating plate clamping groove, grating plate clamping groove with bearing steel beam fixed, grating plate clamping groove is located at both sides of bearing grating plate.

[0008] The support further includes a stiffening rib fixed on the bearing plate and the anchor plate.

[0009] The sliding plate is made of polytetrafluoroethylene plate.

[0010] The utility model discloses also fixed with sliding plate at the lower flange of bearing steel beam.

[0011] The limiting bolt passes through the bearing plate from bottom to top, and then the limiting bolt and the bottom surface of the bearing plate are welded firmly.

[0012] The anchor bar is made of ribbed steel bar and welded with the anchor plate.

[0013] The anchor bar is made of chemical anchor bolt or mechanical anchor bolt, and the anchor plate is connected by bolts.

[0014] Compared with the prior art, the utility model has the following advantages and effects:

[0015] (1) The support, grating plate and the like can be prefabricated in batches in the factory, greatly accelerating the construction progress;

[0016] (2) The vibration of the steel platform can be effectively avoided, and the relative displacement between the steel platform and the turbine island can be effectively released;

[0017] (3) The related parameters of the components can be flexibly adjusted according to the size of the hole and the working condition;

[0018] (4) dismounting and installation are very convenient, and will not affect subsequent use;

[0019] (5) it is suitable for various new, expansion project. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structural schematic diagram of the embodiment of the utility model.

[0021] Figure 2 is the plane structure schematic diagram of the embodiment of the utility model.

[0022] Figure 3 is the elevation structure schematic diagram of the embodiment of the utility model.

[0023] Figure 4 is the structural schematic diagram of the right end of the load-bearing steel beam and support connection of the embodiment of the utility model.

[0024] Figure 5 is the structural schematic diagram of the left end of the load-bearing steel beam and support connection of the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in combination with the drawings and by embodiment, and the following embodiment is the explanation of the utility model, and the utility model is not limited to the following embodiment.

[0026] The embodiment of the utility model includes load-bearing grid plate 1, grid plate clamping groove 2, load-bearing steel beam 3 and support 5.

[0027] Load-bearing grid plate 1 is placed on load-bearing steel beam 3;Grid plate clamping groove 2 is welded with the upper flange of load-bearing steel beam 3, and grid plate clamping groove 2 is located at both sides of load-bearing grid plate 1, which limits the movement in the span direction of grid plate and prevents the sliding fall of grid plate.

[0028] The left and right ends of load-bearing steel beam 3 are all provided with support 5, the left end of load-bearing steel beam 3 is slidably connected with steam turbine island 4 through support 5, and the right end of load-bearing steel beam 3 is fixedly connected with steam turbine inter-turbine platform 14 through support 5, and load-bearing steel beam 3 transmits the load of grid plate to steam turbine island 4 and steam turbine inter-turbine platform 14 through support 5.Support 5 includes stiffener 8 for supporting load-bearing steel beam 3, load-bearing plate 9 and anchor plate 7, limiting plate 10 for limiting the out-of-plane displacement of load-bearing steel beam 3 and anchor bar 6 for fixing anchor plate 7;Stiffener 8, load-bearing plate 9 and anchor plate 7 jointly constitute the main structure of support, load-bearing plate 9 is welded and fixed on anchor plate 7, and stiffener 8 is welded and fixed on load-bearing plate 9 and anchor plate 7;Limiting plate 10 is welded and fixed on load-bearing plate 9;Anchor bar 6 is fixed on the back of anchor plate 7.

[0029] The connecting structure of the left end of the load-bearing steel beam 3 and the support 5 is that the anchor 6 is anchored into the fixed turbine island 4; the rubber support 12 for preventing vibration is fixed on the load-bearing plate 9; the sliding plate 13 for releasing the displacement of the load-bearing steel beam 3 is fixed on the rubber support 12; the left end of the load-bearing steel beam 3 is directly placed on the sliding plate 13; the limiting plates 10 are located on both sides of the left end of the load-bearing steel beam 3, and the height of the limiting plates 10 is the height of the load-bearing steel beam 3 plus the thickness of the rubber support 12 and the sliding plate 13. The material of the sliding plate 13 is a 5mm polytetrafluoroethylene plate, and the sliding plate 13 is also pasted on the lower flange of the overlapping part of the load-bearing steel beam 3 through structural glue. The planar size of the rubber support 12 is consistent with the net distance of the limiting plate 10.

[0030] The connecting structure of the right end of the load-bearing steel beam 3 and the support 5 is that the anchor 6 is anchored into the fixed turbine head platform 14; the limiting bolt 11 for limiting the in-plane displacement of the load-bearing steel beam 3 is installed on the load-bearing plate 9; the right end of the load-bearing steel beam 3 is directly placed on the load-bearing plate 9, and the limiting bolt 11 is fixed with the right end of the load-bearing steel beam 3; the limiting plates 10 are located on both sides of the right end of the load-bearing steel beam 3, and the height of the limiting plates 10 is the same as the height of the load-bearing steel beam 3. In this embodiment, the limiting bolt 11 passes through the bolt hole reserved on the load-bearing plate 9 from bottom to top, and then the limiting bolt 11 is firmly welded with the bottom surface of the load-bearing plate 9; after the bolt hole of the lower flange of the load-bearing steel beam 3 is aligned with the limiting bolt 11, the load-bearing steel beam 3 is placed on the fixed end load-bearing plate 9.

[0031] The net distance between the limiting plates 10 on both sides of the load-bearing steel beam 3 is the width of the load-bearing steel beam 3 plus 10mm.

[0032] When the steel platform is used for cast-in-place concrete structure, the anchor 6 can adopt ribbed steel bars, which are directly embedded into the side of the main frame of the structure after being welded with the anchor plate 7, and are poured together with the concrete frame; when the main structure hardens, the remaining plate parts are pre-fabricated in the factory and welded on the anchor plate 7; when the steel platform is used for a reconstruction project, the anchor 6 can adopt chemical anchors or mechanical anchors, which are connected with the anchor plate 7 by bolts.

[0033] The method for the support 5 at the left end of the load-bearing steel beam 3 is shown in Figure 4 After the load-bearing plate 9, the stiffening rib 8 and the anchor plate 7 are welded, the upper part of the rubber support 12 is connected with the sliding plate 13 by structural glue, and the lower part is connected with the load-bearing plate 9 by structural glue; then the limiting plates 10 are positioned according to the width of the load-bearing steel beam 3. The method for the support 5 at the right end of the load-bearing steel beam 3 is shown in Figure 5 After the load-bearing plate 9, the stiffening rib 8 and the anchor plate 7 are welded, the limiting bolt 11 passes through the bolt hole reserved on the load-bearing plate 9 from bottom to top, and then the limiting bolt 11 is firmly welded with the bottom surface of the load-bearing plate 9. After the installation of the supports 5 at both ends of the load-bearing steel beam 3 is completed, the right end of the load-bearing steel beam 3 is aligned with the limiting bolt 11 on the side of the bolt hole of the lower flange, and the left end is placed on the sliding plate 13; after positioning, the nuts of the limiting bolts 11 are tightened.

[0034] The grid plate clamping groove 2 is centrally welded on the flange of the load-bearing steel beam 3. When the load-bearing steel beams 3 of each span are installed, the load-bearing grid plate 1 can be installed.

[0035] When the steel platform is used for maintenance, the disassembly sequence is opposite to the installation sequence. The load-bearing grid plate 1 of each span is removed first, then the fixing bolts of the limiting bolts 11 are removed, and then the load-bearing steel beam 3 is removed.

[0036] In addition, it should be noted that the specific embodiments described in the specification, the shape of the zero, the components, the name taken, etc. can be different, and the above described in the specification is only an example of the structure of the utility model. Any equivalent change or simple change made according to the structure, features and principles described in the utility model patent concept is included in the protection scope of the utility model patent. The skilled in the art of the utility model can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as it does not deviate from the structure of the utility model or beyond the scope defined in the claims, which shall belong to the protection scope of the utility model.

Claims

1. A detachable anti-vibration steel platform for connecting the turbine inter-turbine platform and the turbine island, comprising load-bearing grid plates and load-bearing steel beams, the load-bearing grid plates being placed on the load-bearing steel beams; characterized in that: Both left and right ends of the load-bearing steel beam are provided with supports, the left end of the load-bearing steel beam is connected with the turbine island through the supports, and the right end of the load-bearing steel beam is fixedly connected with the turbine head platform through the supports; the support comprises a load-bearing plate, an anchor plate, a limiting plate and an anchor bar; the load-bearing plate is fixed on the anchor plate, the limiting plate is fixed on the load-bearing plate, and the anchor bar is fixed on the back of the anchor plate; the connecting structure of the left end of the load-bearing steel beam and the support is that the anchor bar is anchored into the turbine island, a rubber support is fixed on the load-bearing plate, a sliding plate is fixed on the rubber support, the left end of the load-bearing steel beam is placed on the sliding plate, and the limiting plate is located on both sides of the left end of the load-bearing steel beam; the connecting structure of the right end of the load-bearing steel beam and the support is that the anchor bar is anchored into the turbine head platform, a limiting bolt is installed on the load-bearing plate, the right end of the load-bearing steel beam is placed on the load-bearing plate, the limiting bolt is fixed with the right end of the load-bearing steel beam, and the limiting plate is located on both sides of the right end of the load-bearing steel beam.

2. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: The support further comprises a grating plate clamping groove, the grating plate clamping groove is fixed with the load-bearing steel beam, and the grating plate clamping groove is located on both sides of the load-bearing grating plate.

3. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: The support further comprises a stiffening rib, the stiffening rib is fixed on the load-bearing plate and the anchor plate.

4. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: The material of the sliding plate is polytetrafluoroethylene plate.

5. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: A sliding plate is also fixed at the lower flange of the load-bearing steel beam.

6. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: The limiting bolt is welded with the bottom surface of the load-bearing plate after penetrating the load-bearing plate from bottom to top.

7. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: The anchor bar is a ribbed steel bar and is welded with the anchor plate.

8. The detachable anti-vibration steel platform for the connection of the turbine inter- bay head platform and the turbine island according to claim 1, characterized in that: The anchor bar is a chemical anchor or a mechanical anchor and is connected with the anchor plate through a bolt. The anchor bar is a chemical anchor or a mechanical anchor and is connected with the anchor plate through a bolt.

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