CN112320603B - Hoisting anti-collision and top mounting positioning method and device for tower type photo-thermal power generation heat collector - Google Patents
Hoisting anti-collision and top mounting positioning method and device for tower type photo-thermal power generation heat collector Download PDFInfo
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- CN112320603B CN112320603B CN202011112397.5A CN202011112397A CN112320603B CN 112320603 B CN112320603 B CN 112320603B CN 202011112397 A CN202011112397 A CN 202011112397A CN 112320603 B CN112320603 B CN 112320603B
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- 238000004364 calculation method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229920006074 Nylatron® Polymers 0.000 description 2
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- 206010003497 Asphyxia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/04—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
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Abstract
The method and the device for lifting, anti-collision and top installation of the tower type photo-thermal power generation heat collector are characterized in that after the heat collector integrally moves into a heat absorption tower, a heat collector supporting beam is installed on a heat collector bottom beam, a lifting anti-collision device is installed at the outer end part of the heat collector supporting beam, and a heat collector positioning and fixing device is lifted at the bottom of the heat collector supporting beam; in the lifting process of the heat collector, the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower by the lifting anti-collision device; after the heat collector is hoisted to the top of the heat absorption tower, the heat collector fixing anchors are pushed into the clamping grooves of the heat absorption tower through the heat collector positioning and fixing devices under the heat collector supporting beams to perform positioning and fixing. According to the utility model, the heat collector supporting beam is arranged at the bottom of the heat collector, and the anti-collision device and the positioning and fixing device are arranged on the heat collector bottom supporting beam, so that collision in the hoisting process of the heat collector can be prevented, and the positioning and fixing device is utilized to push the fixing anchor to be clamped into the clamping groove of the heat absorption tower, so that the positioning and the installation of the heat collector are effectively ensured.
Description
Technical Field
The utility model relates to a component mounting and positioning method and device of a tower type photo-thermal power generation system, in particular to a hoisting anti-collision and top mounting and positioning method and device of a tower type photo-thermal power generation heat collector; the method and the device for preventing the tower type photo-thermal power generation collector from being collided in the hoisting process can effectively prevent the megawatt tower type photo-thermal power generation collector from being collided, and can ensure that the collector can be stably positioned after being hoisted to the top; belonging to the technical field of heavy object hoisting operation.
Background
The solar photo-thermal power generation is to collect solar heat energy by utilizing a large-scale array parabolic or dish-shaped mirror surface, provide steam by a heat exchange device and combine the process of the traditional turbo generator, thereby achieving the purpose of power generation. The solar photo-thermal power generation technology is adopted, so that an expensive silicon crystal photoelectric conversion process is avoided, and the cost of solar power generation can be greatly reduced. Moreover, this form of solar energy utilises an incomparable advantage of other forms of solar energy conversion, in that the water heated by the solar energy can be stored in a large container, and still enable the turbine to generate electricity a few hours after the sun has fallen into the hill. Therefore, as a clean energy source, the photo-thermal power generation is used as a clean energy source, and with the continuous perfection of technology and the increasing importance of the world on environmental protection, the application of solar photo-thermal power generation in the world is becoming more common, and the power of power generation is also becoming larger. Solar photo-thermal power generation becomes an important direction for new energy utilization.
According to different solar energy collection modes, solar photo-thermal power generation is mainly divided into four types of towers, grooves, discs and linear Fresnel. The tower type solar photo-thermal power generation has the comprehensive advantages of being difficult to compare with the comprehensive advantages of groove type, butterfly type, linear Fresnel type and the like in aspects of scale, photoelectric conversion efficiency, investment cost and the like, has a better development prospect, and is increasingly focused on the development and research of the tower type photo-thermal power generation technology in various countries at present.
The tower type solar photo-thermal power generation mainly comprises a heliostat field formed by a plurality of heliostats, solar reflection is concentrated on a high-temperature receiver (also called a heat collector) at the top of a high tower in the middle of the heliostat field, after the solar reflection is converted into heat energy, the heat energy is transmitted to a working medium to heat, and the working medium is input into a heat engine after passing through a heat accumulator to drive a generator to generate power. The tower type photo-thermal power generation system consists of five subsystems, namely a light condensation subsystem, a heat collection subsystem, a power generation subsystem, a heat storage subsystem and an auxiliary energy subsystem. Wherein, the light-gathering subsystem and the heat-collecting subsystem form a core technology. One key point of the construction and installation of the tower type photo-thermal power station is the installation of the heat collector. Along with the increasing power of solar photo-thermal power generation, the heat collector is also increased, and the heat collector is generally integrally hoisted to the heat absorption tower after being combined on the ground, so that the total project period can be shortened, the installation quality can be ensured, but along with the improvement of the capacity of the photo-thermal unit, the hoisting construction difficulty is increased, and therefore, how to safely install the heat collector on the tower top becomes one of the key problems of tower type solar photo-thermal power generation. At present, the heat collector is installed by adopting tower cranes, which can also be used for a small and medium-sized tower type solar photo-thermal power generation system below megawatt, but once the temperature reaches above megawatt, a simple tower type hoisting mode is adopted, so that the hoisting task can be completed by the cooperative coordination of a plurality of tower cranes; if the hoisting is performed by disassembly, the assembly is required at the top of the tower, which brings about a lot of inconvenience to construction, and thus, improvement is necessary.
Through patent search, no related patent technical literature report has been found, and the closest paper is the related literature, and the related literature has the following several items:
1. the patent number is CN201920324645.9, the name is the utility model patent of a building electrical equipment construction device, this patent discloses a building electrical equipment construction device, including the portal frame, the inside level of portal frame is equipped with the fixed plate, the below of fixed plate is equipped with clamping mechanism, the both sides of fixed plate are all fixed and are equipped with the head rod, the inside that the portal frame is relative all vertically offered first bar hole, the inside in two first bar holes is all vertically equipped with the unidirectional screw, the both ends of two unidirectional screw all rotate with the upper and lower both sides that correspond first bar groove through first antifriction bearing and be connected and the upper end all runs through to the top of portal frame and all be fixed with first bevel gear, the inside in two first bar grooves all sliding connection has first movable block, the upside of two first movable blocks all is through first screw hole and the pole wall threaded connection of two unidirectional screw.
2. The patent number is CN202010365560.2, the name is 'a method for hoisting and positioning a trough type solar collector', and the patent discloses a method for hoisting and positioning a trough type solar collector, which comprises the following steps: s1, hoisting two groove-type solar heat collectors; s2, hoisting the rest groove type solar heat collectors; s3, adjusting and connecting the groove type solar heat collector. When the groove type solar heat collector is lifted, the orientation of the groove type solar heat collector is adjusted after the center position of all the groove type solar heat collectors is positioned by matching the positioning shaft and the positioning hole. When the indication readings of the tower scales, which are hung at the symmetrical structure positions on the cantilevers at the left side and the right side of the trough type solar heat collector, are identical, the trough type solar heat collector just faces upwards. All the trough type solar collectors can be conveniently adjusted to be fixedly connected together after facing upwards.
3. The patent number is CN201620778657.5, the name is the utility model patent of 'photo-thermal power generation collector module integral hoisting sling', and the patent discloses the photo-thermal power generation collector module integral hoisting sling, so that the technical problems of large outline dimension and difficult hoisting of the collector module are solved. The solar heat collector comprises a U-shaped front bracket arranged at the central position of a front cross arm, a U-shaped rear bracket arranged at the central position of a rear cross arm, a torque tube on a heat collector module arranged in the U-shaped front bracket and the U-shaped rear bracket, a front semicircular hoop fastened at the front end of the torque tube and connected with the U-shaped front bracket, and a rear semicircular hoop fastened at the rear end of the torque tube and connected with the U-shaped rear bracket.
Through the analysis of the above patent documents, we find that the patents relate to lifting and also relate to research on integral lifting of the photo-thermal power generation heat collector module, and some improved technical solutions are also proposed, but some problems still exist in the technical solutions, and still there is no solution to how to solve some practical problems of how to integrally lift the tower type solar photo-thermal power generation heat collector in the lifting process, so that many unexpected problems and faults still exist in practical application, and therefore, further research on the problems still remains necessary.
Disclosure of Invention
The utility model aims to overcome the defects of the existing hoisting anti-collision and top installation positioning methods of a tower type photo-thermal power generation heat collector, and provides a novel hoisting anti-collision and top installation positioning method and an installation positioning device of the tower type photo-thermal power generation heat collector.
In order to achieve the purpose, the utility model provides a hoisting anti-collision and top installation positioning method for a tower type photo-thermal power generation heat collector, wherein after the tower type photo-thermal power generation heat collector integrally moves into a heat absorption tower, a heat collector supporting beam is installed on a support beam at the bottom of the tower type photo-thermal power generation heat collector, a hoisting anti-collision device is installed at the outer end part of the heat collector supporting beam, and a heat collector positioning and fixing device is hoisted at the bottom of the heat collector supporting beam; in the lifting process of the heat collector, the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower by the lifting anti-collision device; after the heat collector is hoisted to the top of the heat absorption tower, the heat collector fixing anchors are pushed into the clamping grooves of the heat absorption tower through the heat collector positioning and fixing devices under the heat collector supporting beams to perform positioning and fixing.
Further, the step of installing the heat collector supporting beam on the bottom supporting beam of the tower type photo-thermal power generation heat collector is to loosen bolts between the heat collector and the heat collector supporting ring beam after the whole tower type photo-thermal power generation heat collector moves to the central position inside the heat absorption tower, so that the heat collector and the heat collector supporting ring beam are separated, and then the heat collector supporting beam is installed on the bottom of the heat collector; the number of the heat collector supporting beams is more than 8, and the plurality of the heat collector supporting beams are arranged in a circular shape according to the circumference of the heat collector.
Further, the hoisting anti-collision device is arranged at the outer end part of the heat collector supporting beam, an anti-collision block for preventing the heat collector from collision with the inner wall of the heat absorption tower when being hoisted in the heat absorption tower is arranged at the side surface of the outer end part of the heat collector supporting beam, and the outer end part of the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower when being hoisted by the anti-collision block; the anti-collision block is a buffer formed by a nylon buffer block on a steel bottom plate; the nylon buffer block is fixed on the steel bottom plate through a fastener.
Further, the positioning and fixing device for hoisting the heat collector at the bottom of the heat collector supporting beam is a fixing anchor with a propulsion device which is hoisted at the bottom of the heat collector supporting beam; the propulsion device rails are radially arranged in the same direction of the arrangement of the heat collector supporting beams, the propulsion device rails are arranged on the bottom surface of the heat collector supporting beams, the length of the propulsion device rails is enough to meet the requirement that the starting point of the anchor on the propulsion device rails does not interfere with the hoisting of the heat collector, and the end point can meet the requirement that the anchor is pushed into the clamping groove of the heat absorption tower.
Further, a propelling device is hoisted under the track of the propelling device, and the propelling device comprises a hydraulic cylinder and a propelling slide block; the pushing slide block is L-shaped, and the bottom edge of the L-shaped slide block extends outwards; the pushing hydraulic cylinder is connected behind the pushing slide block, and the pushing slide block is pushed to move on the track of the pushing device through the pushing hydraulic cylinder.
Further, the side surface of the L-shaped bottom edge of the pushing slide block, which extends outwards, is connected with a fixed anchor device, and the fixed anchor device is fixed on the side surface of the bottom of the pushing slide block and moves along with the pushing slide block; after the heat collector is hoisted to the top surface, the pushing slide block moves towards the clamping groove on the heat absorption tower along the track of the pushing device under the pushing of the pushing hydraulic cylinder until the pushing slide block moves into the clamping groove on the heat absorption tower and then stops; the fixed anchor device is an assembly of an upper anchor block and a lower anchor block, the upper anchor block and the lower anchor block are connected through a screw rod, and the distance between the upper anchor block and the lower anchor block is adjusted through the screw rod, so that the upper anchor block and the lower anchor block can be accurately clamped into a clamping groove of a heat absorption tower when the pushing slide block is pushed in respectively.
A hoisting anti-collision and top mounting device for a tower type photo-thermal power generation collector comprises a tower type photo-thermal power generation collector, a collector supporting beam, an anti-collision device and a collector positioning and fixing device; the heat collector supporting cross beam is arranged on the bottom of the bottom beam of the tower type photo-thermal power generation heat collector through a fastener; the anti-collision device and the heat collector positioning and fixing device are respectively arranged on the outer side surface and the bottom surface of the heat collector supporting beam.
Further, the anti-collision device is an anti-collision block which is arranged on the side surface of the outer end part of the heat collector supporting beam and used for preventing the heat collector from collision with the inner wall of the heat absorption tower when being hoisted in the heat absorption tower, and the outer end part of the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower when being hoisted by the anti-collision block; the anti-collision block is a buffer formed by a nylon buffer block on a steel bottom plate; the nylon buffer block is fixed on the steel bottom plate through a fastener.
Further, the heat collector positioning and fixing device is used for hoisting a fixing anchor with a propulsion device at the bottom of the heat collector supporting beam; the propulsion device rails are radially arranged in the same direction of the arrangement of the heat collector supporting beams, the propulsion device rails are arranged on the bottom surface of the heat collector supporting beams, the length of the propulsion device rails is enough to meet the requirement that the starting point of the anchor on the propulsion device rails does not interfere with the hoisting of the heat collector, and the end point can meet the requirement that the anchor is pushed into the clamping groove of the heat absorption tower.
Further, a propelling device is hoisted under the track of the propelling device, and the propelling device comprises a hydraulic cylinder and a propelling slide block; the pushing slide block is L-shaped, and the bottom edge of the L-shaped slide block extends outwards; a pushing hydraulic cylinder is connected behind the pushing slide block, and the pushing slide block is pushed to move on the track of the pushing device by the pushing hydraulic cylinder; the side surface of the L-shaped bottom edge of the pushing slide block, which extends outwards, is connected with a fixed anchor device, and the fixed anchor device is fixed on the side surface of the bottom of the pushing slide block and moves along with the pushing slide block; after the heat collector is hoisted to the top surface, the pushing slide block moves towards the clamping groove on the heat absorption tower along the track of the pushing device under the pushing of the pushing hydraulic cylinder until the pushing slide block moves into the clamping groove on the heat absorption tower and then stops; the fixed anchor device is an assembly of an upper anchor block and a lower anchor block, the upper anchor block and the lower anchor block are connected through a screw rod, and the distance between the upper anchor block and the lower anchor block is adjusted through the screw rod, so that the upper anchor block and the lower anchor block can be accurately clamped into a clamping groove of a heat absorption tower when the pushing slide block is pushed in respectively.
The utility model has the advantages that:
according to the utility model, the bottom of the heat collector is provided with the heat collector supporting beam, after the heat collector is hoisted to the top, the fixing anchor is pushed to be clamped into the clamping groove of the heat absorption tower by the positioning fixing device, and the outer end part of the heat collector bottom supporting beam is provided with the anti-collision device in the hoisting process, so that the heat collector can be effectively ensured to be stably installed and positioned after being hoisted to the top of the heat absorption tower; the main advantages are as follows:
1. according to the utility model, the bottom of the heat collector is provided with the heat collector supporting beam, so that the hoisting requirement is met, and effective support is provided for subsequent positioning and installation, so that the heat collector is simpler and more convenient to install at the top;
2. the utility model adopts a mode that the fixed anchor is pushed and embedded into the heat absorption tower, so that the fixed anchor can retract to a position close to the center of the heat collector when being lifted, and is pushed by the pushing device and embedded into the clamping groove of the heat absorption tower after being lifted to the top position, so as to position and install the heat collector; thus, the heat collector is convenient and reliable, and provides preconditions for lifting the heat collector from the inside of the heat absorption tower;
3. the fixed anchors adopt a mode of clamping and fixing the upper anchors and the lower anchors, so that the safety stability of the anchoring positioning is improved;
4. by arranging the anti-collision device, the problems that the tower body is deformed to a certain extent, and the heat collector collides with the inner wall of the tower due to the changes of the day-night temperature difference of the external environment, the temperature difference of the face, the sun, the back and the yin and the like in the continuous lifting process are avoided;
5. the mounting problem of the heat collector after being lifted to the top is guaranteed by the supporting mode of the embedded bracket, the technical problems of long-time lifting, weight unloading and the like are solved by a lifting method of unified and coordinated command, and the safety of equipment lifting is improved;
6. the utility model provides a hoisting operation standard table, which provides reference experience for subsequent similar hoisting.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic perspective view of an embodiment of the present utility model;
FIG. 3 is a schematic view of a collision avoidance device according to an embodiment of the present utility model;
fig. 4 is a schematic view of the installation position of the present utility model.
Detailed Description
The utility model will be further elucidated with reference to the drawings and to specific embodiments.
Example 1
As shown in figure 1, the lifting anti-collision and top mounting device for the 100MW megawatt tower type photo-thermal power generation collector comprises a tower type photo-thermal power generation collector 1, a collector supporting beam 2, an anti-collision device 3 and a collector positioning and fixing device 4; the heat collector supporting cross beam 2 is arranged on the bottom of the bottom beam of the tower type photo-thermal power generation heat collector 1 through a fastener; the anti-collision device 3 and the collector positioning and fixing device 4 are respectively arranged on the outer side surface 5 and the bottom surface 6 of the collector supporting beam 2. A lifting block 18 matched with a lifting appliance is arranged on the front end of the heat collector supporting beam 2, and the lifting block 18 is matched with a lifting lug 19 of the lifting appliance.
The anti-collision device 3 is characterized in that an anti-collision block 7 for preventing the tower type photo-thermal power generation heat collector 1 from collision with the inner wall of the heat absorption tower when being hoisted in the heat absorption tower is arranged on the outer side surface 5 of the outer end part of the heat collector supporting beam 2, and the outer end part of the heat collector supporting beam 2 is prevented from collision with the inner wall of the heat absorption tower when being hoisted by the anti-collision block 7; the anti-collision block 7 is a buffer formed by a nylon buffer block on a steel bottom plate; the nylon buffer block 9 is fixed on the steel bottom plate 10 through a fastener. The steel bottom plate 10 is an L-shaped bottom plate and is sleeved on the heat collector supporting beam 2, and is fixed on the heat collector supporting beam 2 through a fastener.
The heat collector positioning and fixing device 4 is a fixed anchor device 11 with a propulsion device which is hung at the bottom of a heat collector supporting beam; the propulsion device rails 13 are radially arranged under the heat collector supporting beams 2 in the same direction as the arrangement of the heat collector supporting beams 2, the propulsion device rails 13 are arranged on the bottom surface of the heat collector supporting beams 2, the lengths of the propulsion device rails 13 are such that the starting points of the anchor devices 11 on the propulsion device rails 13 do not interfere with the hoisting of the heat collector, and the purposes of pushing the anchor devices into the heat absorption tower clamping grooves at the end points are achieved.
A propulsion device 15 is hung under the propulsion device track 13, and the propulsion device 15 comprises a propulsion hydraulic cylinder 16 and a propulsion sliding block 17; the pushing slide block 17 is L-shaped, and the bottom edge of the L-shaped extends outwards; a pushing hydraulic cylinder 16 is connected behind the pushing slide block 17, and the pushing slide block 17 is pushed to move on the pushing device track 13 by the pushing hydraulic cylinder 16; the side surface of the L-shaped bottom edge of the pushing slide block, which extends outwards, is connected with a fixed anchor device 11, and the fixed anchor device 11 is fixed on the side surface of the bottom of the pushing slide block 17 and moves together with the pushing slide block 17; after the heat collector is hoisted to the top surface, the pushing slide block 17 moves along the pushing device track 13 into the clamping groove 12 on the heat absorption tower under the pushing of the pushing hydraulic cylinder 16 until the pushing slide block moves into the clamping groove 12 on the heat absorption tower and then stops; the fixed anchor device 11 is an assembly of an upper anchor block and a lower anchor block, the upper anchor block and the lower anchor block are connected through a screw rod 14, and the distance between the upper anchor block and the lower anchor block is adjusted through the screw rod 14, so that the upper anchor block and the lower anchor block can be accurately clamped into a clamping groove of a heat absorption tower when the pushing slide block is pushed in respectively.
The hoisting anti-collision and top mounting device of the 100MW megawatt tower type photo-thermal power generation heat collector has the following structure:
1. anti-collision device for lifting heat collector
In order to prevent the heat collector from striking the concrete tower in the lifting process. 16 bumpers were mounted on the support arm. The specific pattern is shown in figure 4.
(1) Collision prevention device model
The structure is a steel base plate with a bumper made of Nylatron 703 and XL. The bolts M24.9 are used for fixing the nylon piece on the bottom plate, and the bolts M30.9 are used for fixing the whole anti-collision device on the lifting arm of the heat collector.
(2) Calculation checking
The design of the anti-collision device can bear a maximum impact force of 60t in the front or 30t in the lateral direction.
If only one anti-collision device impacts the concrete wall, the horizontal load is 3.5% of the weight of the heat collector, namely 63t. The load can be absorbed by two frontal pads on one anti-collision device:
the steel plate is made of Q345. The yield strength is 345/1.1=313 MPa, the bolt is grade 10.9. The liner was made of Nylatron 703 XL material with a yield strength of 67MPa.
The shear strength of each bolt was calculated as follows:
if shear forces pass the threaded surface F vRd =0.5×F ub ×A s /γ Mb
If the shearing force does not pass the threaded surface F vRd =0.6×F ub ×A/γ Mb
F ub Bolt material yield strength, gamma Mb Taking 1.25 of nominal section of A bolt, A s A thread cross section.
For bolt M30, the shear capacity was 31.1 t, and for bolt M24, the shear capacity was 12.4 t.
The stress calculation is performed by using SolidWorks 2016 computer software to build a 3D model.
Shear force of each bolt M30 is greater than 63/4=15.75t <31.1 via thread stress
The shearing force of each bolt M30 is not 23.85t <31.1 through the screw thread; each M24 bolt bears a transverse load of 3.94 t <12.4t of 1/8
(3) Conclusion(s)
Calculations have shown that under load, the structure has sufficient structural integrity to meet the intended purpose. No plastic deformation is expected in the collector and is far from the limit of plastic deformation.
2. Bottom support ring beam moves out and scaffold is set up before heat collector hoist and mount
When the support ring beam is hoisted to the height of 8m, the hoisting work is stopped, the installation direction is changed after the sliding shoe propelling device is dismantled, and the support ring beam is pushed out of the tower body.
The bottom support beam push-pull device of the heat collector is installed; the push-pull device consists of a sliding rail, a bracket and a hydraulic jack, and is arranged below a steel beam at the bottom of the heat collector; the slide rail welds on the girder steel of collector bottom at the collector integrated field, and the bracket utilizes bolted connection in the slide rail below, and the tray can slide under hydraulic jack promotes.
The bottom support beam consists of two beams, the middle of the bottom support beam is connected into a whole by a screw rod of M64, and the distance between the two beams is 2450mm. After the ground combination is completed, the total weight of the bottom cross beam is 2.7t, the bottom cross beam is transported to the position right below the installation position by using a forklift with the weight of 5t and lifted, the supporting cross beam is lifted to the position by using a 3t chain hoist, a constructor stands on a lifting rod car in a tower, and the cross beam is fixed on a pushing device bracket by using a bolt of M30.
Setting up a scaffold operation platform at the bottom of the heat collector: when the heat collector reaches the position of the heat collector, constructors are required to operate the support beam to slide and adjust the support beam at the lower part of the heat collector, so that a double-layer scaffold hanging frame platform with the diameter of 23m and the height of 3.5m is erected after the support beam is installed, and the platform cannot influence the bottom support beam to push. The scaffold platform is removed after the formal platform in 213m in the tower is in place.
3. Hoisting device for heat collector
When the command to start lifting is issued, the collector will start lifting at an average speed of 6 m/h. The collector will be lifted on days 1 and 2 until a height of 100 to 150 meters is reached. During this time, the lift inspector inspects the jaws of the strander, and if abnormal, changes it on day 3. The strander is disassembled by a practitioner. After lifting the jack head, the worker smears lubricating oil on the jaw. The chin is replaced by a professional and others must not touch the strangulation cone. After the jaws are replaced, the lifting movement will continue.
The final position of the top of the column is reached within two days in the future. The lifting operation will be completed within 5 days, including the replacement of the cone.
4. Heat collector support beam installation
Operating the supporting beam push-pull device to push the supporting beam into the tower body groove;
after the bottom supporting beam is pushed into the installation position, an adjusting gasket is added at the bottom of the installation position of the sliding support, and the bottom of the lower supporting beam is padded into a square. After being stressed, a concave steel box is arranged below the bottom beam and is used for jacking the jack of the supporting beam. And (3) jacking the oil roof, and stopping jacking when the elevation of the top surface of the upper supporting beam and the top of the concrete of the heat collection tower are lower by 17mm.
All systems were checked for stress and stable. Removing the supporting beam pushing system, removing nuts and gaskets on the upper part of the supporting beam, slowly falling the whole heat collector, penetrating an M64 screw rod into the installation position of the bottom steel beam of the heat collector until the elevation of the bottom steel beam of the heat collector is consistent with the elevation of the tower top. At the moment, the gap between the upper surface of the supporting beam and the steel beam at the bottom of the heat collector is 17mm.
The supporting beam is integrally lifted by using a chain block, and meanwhile, the upper supporting beam and the steel beam connecting bolt at the bottom of the heat collector are penetrated, the part of the bolts are fastened, and the gap between the bottom sliding support and the concrete surface is 27mm.
And the left and right side buffer gaskets of the supporting beam are adjusted to ensure that the buffer gaskets and the concrete are gapless. The gap adjustment can be performed by using an adjusting gasket in the process.
The sliding support is grouted for the second time, and the maintenance strength meets the requirement. Two ultrathin hydraulic oil tops and chain blocks are arranged at the bottom of the lower supporting beam, and the lower supporting beam is lifted to the installation position. And simultaneously fastening the M64 connecting screw rod. And (5) removing the oil top and the chain hoist.
After the heat collector is in place and the foundation has the bearing condition, the lifting device starts to unload, the hydraulic device gradually unloads according to 20% of the load each time, the deformation condition of the foundation and the supporting cross beam is checked after each unloading, and after no obvious deformation is checked, the lifting device continues to unload until the load of the lifting device is 0, and the heat collector is completely bearing on the foundation.
Dismantling the heat collector hoisting device: loosening a steel strand of the hoisting device, dismantling a pin shaft between the steel strand and the lifting lug, binding the steel strand extending out of the jack by using the tower crane, dismantling 5 steel strands each time, cutting the part of the steel strand, and slowly placing the steel strand at zero meters through a reserved hole of the overhead operation platform; and loosening a connecting bolt of the jack and the portal frame, and using the tower crane to hoist the hydraulic device and the rest small part of steel strands to place zero meters of ground outside the tower.
The above-listed embodiments are only to clearly and completely describe the technical solution of the present utility model in conjunction with the accompanying drawings; it should be understood that the embodiments described are only some embodiments, but not all embodiments, and that the terms such as "upper", "lower", "front", "rear", "middle", etc. used in this specification are also for descriptive purposes only and are not intended to limit the scope of the utility model in which the utility model may be practiced, but rather the relative relationships thereof may be altered or modified without materially altering the technology to the extent that the utility model may be practiced. Meanwhile, the structures, proportions, sizes and the like shown in the drawings are only used for being matched with the disclosure of the specification, so that people skilled in the art can know and read the structures, proportions and sizes, and the like, and are not limited by the practical limit conditions of the utility model, so that the structure modification, the proportion relation change or the size adjustment do not have any technical significance, and all fall within the scope covered by the technical disclosure of the utility model under the condition that the effect and the achieved aim of the utility model are not affected. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model has the advantages that:
according to the utility model, the bottom of the heat collector is provided with the heat collector supporting beam, after the heat collector is hoisted to the top, the fixing anchor is pushed to be clamped into the clamping groove of the heat absorption tower by the positioning fixing device, and the outer end part of the heat collector bottom supporting beam is provided with the anti-collision device in the hoisting process, so that the heat collector can be effectively ensured to be stably installed and positioned after being hoisted to the top of the heat absorption tower; the main advantages are as follows:
1. according to the utility model, the bottom of the heat collector is provided with the heat collector supporting beam, so that the hoisting requirement is met, and effective support is provided for subsequent positioning and installation, so that the heat collector is simpler and more convenient to install at the top;
2. the utility model adopts a mode that the fixed anchor is pushed and embedded into the heat absorption tower, so that the fixed anchor can retract to a position close to the center of the heat collector when being lifted, and is pushed by the pushing device and embedded into the clamping groove of the heat absorption tower after being lifted to the top position, so as to position and install the heat collector; thus, the heat collector is convenient and reliable, and provides preconditions for lifting the heat collector from the inside of the heat absorption tower;
3. the fixed anchors adopt a mode of clamping and fixing the upper anchors and the lower anchors, so that the safety stability of the anchoring positioning is improved;
4. by arranging the anti-collision device, the problems that the tower body is deformed to a certain extent, and the heat collector collides with the inner wall of the tower due to the changes of the day-night temperature difference of the external environment, the temperature difference of the face, the sun, the back and the yin and the like in the continuous lifting process are avoided;
5. the mounting problem of the heat collector after being lifted to the top is guaranteed by the supporting mode of the embedded bracket, the technical problems of long-time lifting, weight unloading and the like are solved by a lifting method of unified and coordinated command, and the safety of equipment lifting is improved;
6. the utility model provides a hoisting operation standard table, which provides reference experience for subsequent similar hoisting.
Claims (9)
1. The method for hoisting, anti-collision and top installation and positioning of the tower type photo-thermal power generation heat collector is characterized by comprising the following steps of: after the tower type photo-thermal power generation heat collector integrally moves into the heat absorption tower, a heat collector supporting beam is arranged on a support beam at the bottom of the tower type photo-thermal power generation heat collector, a hoisting anti-collision device is arranged at the outer end part of the heat collector supporting beam, and a heat collector positioning and fixing device is hoisted at the bottom of the heat collector supporting beam; in the lifting process of the heat collector, the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower by the lifting anti-collision device; after the heat collector is hoisted to the top of the heat absorption tower, the heat collector fixing anchors are pushed into the clamping grooves of the heat absorption tower through the heat collector positioning and fixing devices under the heat collector supporting beams to perform positioning and fixing.
2. The method for hoisting, crashing and top mounting and positioning the tower type photo-thermal power generation collector as claimed in claim 1, wherein the method comprises the following steps: the method comprises the steps that a heat collector supporting beam is arranged on a supporting beam at the bottom of a tower type photo-thermal power generation heat collector, after the tower type photo-thermal power generation heat collector integrally moves to the central position inside a heat absorption tower, bolts between heat collector supporting ring beams of the heat collector are loosened, so that the heat collector and the heat collector supporting ring beams are separated, and then the heat collector supporting beam is arranged on the bottom of the heat collector; the number of the heat collector supporting beams is more than 8, and the plurality of the heat collector supporting beams are arranged in a circular shape according to the circumference of the heat collector.
3. The method for hoisting, crashing and top mounting and positioning the tower type photo-thermal power generation collector as claimed in claim 1, wherein the method comprises the following steps: the hoisting anti-collision device is arranged at the outer end part of the heat collector supporting beam, an anti-collision block for preventing the heat collector from collision with the inner wall of the heat absorption tower when being hoisted in the heat absorption tower is arranged on the side surface of the outer end part of the heat collector supporting beam, and the outer end part of the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower when being hoisted by the anti-collision block; the anti-collision block is a buffer formed by a nylon buffer block on a steel bottom plate; the nylon buffer block is fixed on the steel bottom plate through a fastener.
4. The method for hoisting, crashing and top mounting and positioning the tower type photo-thermal power generation collector as claimed in claim 1, wherein the method comprises the following steps: the positioning and fixing device for hoisting the heat collector at the bottom of the heat collector supporting beam is a fixing anchor with a propulsion device which is hoisted at the bottom of the heat collector supporting beam; the propulsion device rails are radially arranged in the same direction of the arrangement of the heat collector supporting beams, the propulsion device rails are arranged on the bottom surface of the heat collector supporting beams, the length of the propulsion device rails is enough to meet the requirement that the starting point of the anchor on the propulsion device rails does not interfere with the hoisting of the heat collector, and the end point can meet the requirement that the anchor is pushed into the clamping groove of the heat absorption tower.
5. The method for hoisting, crashing and top mounting and positioning the tower type photo-thermal power generation heat collector as claimed in claim 4, wherein the method comprises the following steps: a propulsion device is hoisted under the propulsion device track, and the propulsion device comprises a hydraulic cylinder and a propulsion sliding block; the pushing slide block is L-shaped, and the bottom edge of the L-shaped slide block extends outwards; the pushing hydraulic cylinder is connected behind the pushing slide block, and the pushing slide block is pushed to move on the track of the pushing device through the pushing hydraulic cylinder.
6. The method for hoisting, crashing and top mounting and positioning the tower type photo-thermal power generation collector as claimed in claim 5, wherein the method comprises the following steps: the side surface of the L-shaped bottom edge of the pushing slide block, which extends outwards, is connected with a fixed anchor device, and the fixed anchor device is fixed on the side surface of the bottom of the pushing slide block and moves along with the pushing slide block; after the heat collector is hoisted to the top surface, the pushing slide block moves towards the clamping groove on the heat absorption tower along the track of the pushing device under the pushing of the pushing hydraulic cylinder until the pushing slide block moves into the clamping groove on the heat absorption tower and then stops; the fixed anchor device is an assembly of an upper anchor block and a lower anchor block, the upper anchor block and the lower anchor block are connected through a screw rod, and the distance between the upper anchor block and the lower anchor block is adjusted through the screw rod, so that the upper anchor block and the lower anchor block can be accurately clamped into a clamping groove of a heat absorption tower when the pushing slide block is pushed in respectively.
7. A hoisting anti-collision and top mounting device for a tower type photo-thermal power generation collector comprises a tower type photo-thermal power generation collector, a collector supporting beam, an anti-collision device and a collector positioning and fixing device; the heat collector supporting cross beam is arranged on the bottom of the bottom beam of the tower type photo-thermal power generation heat collector through a fastener; the anti-collision device and the heat collector positioning and fixing device are respectively arranged on the outer side surface and the bottom surface of the heat collector supporting beam; the heat collector positioning and fixing device is used for hoisting a fixing anchor with a propulsion device at the bottom of the heat collector supporting beam; the propulsion device rails are radially arranged in the same direction of the arrangement of the heat collector supporting beams, the propulsion device rails are arranged on the bottom surface of the heat collector supporting beams, the length of the propulsion device rails is enough to meet the requirement that the starting point of the anchor on the propulsion device rails does not interfere with the hoisting of the heat collector, and the end point can meet the requirement that the anchor is pushed into the clamping groove of the heat absorption tower.
8. The tower-type photo-thermal power generation collector hoisting anti-collision and top mounting device as claimed in claim 7, wherein: the anti-collision device is characterized in that an anti-collision block for preventing the heat collector from collision with the inner wall of the heat absorption tower when the heat collector is hoisted in the heat absorption tower is arranged on the side surface of the outer end part of the heat collector supporting beam, and the outer end part of the heat collector supporting beam is prevented from collision with the inner wall of the heat absorption tower when the heat collector supporting beam is hoisted by the anti-collision block; the anti-collision block is a buffer formed by a nylon buffer block on a steel bottom plate; the nylon buffer block is fixed on the steel bottom plate through a fastener.
9. The tower-type photo-thermal power generation collector hoisting anti-collision and top mounting device as claimed in claim 7, wherein: a propulsion device is hoisted under the propulsion device track, and the propulsion device comprises a hydraulic cylinder and a propulsion sliding block; the pushing slide block is L-shaped, and the bottom edge of the L-shaped slide block extends outwards; a pushing hydraulic cylinder is connected behind the pushing slide block, and the pushing slide block is pushed to move on the track of the pushing device by the pushing hydraulic cylinder; the side surface of the L-shaped bottom edge of the pushing slide block, which extends outwards, is connected with a fixed anchor device, and the fixed anchor device is fixed on the side surface of the bottom of the pushing slide block and moves along with the pushing slide block; after the heat collector is hoisted to the top surface, the pushing slide block moves towards the clamping groove on the heat absorption tower along the track of the pushing device under the pushing of the pushing hydraulic cylinder until the pushing slide block moves into the clamping groove on the heat absorption tower and then stops; the fixed anchor device is an assembly of an upper anchor block and a lower anchor block, the upper anchor block and the lower anchor block are connected through a screw rod, and the distance between the upper anchor block and the lower anchor block is adjusted through the screw rod, so that the upper anchor block and the lower anchor block can be accurately clamped into a clamping groove of a heat absorption tower when the pushing slide block is pushed in respectively.
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| CN202011112397.5A CN112320603B (en) | 2020-10-16 | 2020-10-16 | Hoisting anti-collision and top mounting positioning method and device for tower type photo-thermal power generation heat collector |
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| CN202011112397.5A CN112320603B (en) | 2020-10-16 | 2020-10-16 | Hoisting anti-collision and top mounting positioning method and device for tower type photo-thermal power generation heat collector |
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| CN113756589A (en) * | 2021-10-11 | 2021-12-07 | 上海电气集团股份有限公司 | Tower-type solar heat collector and modular installation method of platform in tower |
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Effective date of registration: 20221219 Address after: No. 358, queyuan Road, Tianxin District, Changsha City, Hunan Province Applicant after: China Energy Construction Group Hunan Thermal Power Construction Co.,Ltd. Applicant after: Shanghai Electric Group Co.,Ltd. Address before: No. 358, queyuan Road, Tianxin District, Changsha City, Hunan Province Applicant before: China Energy Construction Group Hunan Thermal Power Construction Co.,Ltd. |
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