Overhead working protection device for tower type heat absorber of solar photo-thermal power generation system

Abstract

The utility model discloses a high-altitude operation protection device for a tower type heat absorber of a solar photo-thermal power generation system, which comprises a lower part supporting annular track and an upper part annular track which are arranged on a tower body, the protection device further comprises a protection device frame, a plurality of box body supporting devices, a plurality of module box bodies, a lower driving wheel set device, an upper driving wheel set device and a tower crane. A lower driving wheel set device and an upper driving wheel set device are installed at the bottom and the upper portion of the protection device frame corresponding to the lower supporting annular track and the upper annular track respectively, the upper portion of the protection device frame is open, multiple layers are arranged in the protection device frame, each layer is used for correspondingly containing a module box, and a box supporting device is arranged between every two layers. And the tower crane is used for hoisting the module box body and the protective device frame. According to the device, auxiliary mounting operation that people are hung in the air in the device mounting and dismounting process is avoided to a great extent, and the weight requirement for hoisting of the device every time is reduced through the modular structure.

Description

Technical Field

[0001] The utility model relates to the technical field of high-altitude maintenance of a solar thermal power generation tower heat absorber, in particular to a high-altitude operation protective device for a solar thermal power generation system tower heat absorber. Background Art

[0002] Renewable energy alternatives, centered around solar energy and wind energy, are emerging in countries around the world this year. Among them, solar thermal power generation is developing rapidly as a new form of solar energy utilization. Solar thermal power generation is achieved by reflecting sunlight to focus light on a certain range and generate a large amount of heat. The heat energy is then absorbed and converted into high-temperature and high-pressure steam by a heat absorber device, and then the steam turbine generator set is used to achieve the conversion of solar energy into electrical energy. The use of solar thermal power generation technology avoids the expensive silicon crystal photoelectric conversion process and can greatly reduce the cost of solar power generation. And with the support of policies, it will promote the rapid development of the solar thermal power generation industry, and at the same time, the demand for equipment maintenance, repair, and transformation will also increase rapidly.

[0003] The tower solar thermal system is one of the mainstream solar thermal power generation technologies in the industry. Its characteristic is that the absorber device is set on the top of a high tower and placed on the focusing point of the mirror. The height of the tower is generally tens to hundreds of meters, so the subsequent maintenance is difficult. With the increase of the installed capacity of the equipment, the size of the equipment itself has also increased significantly, but the lifting capacity of the crane on the top of the tower is limited. The traditional integral high-altitude work protection device cannot be installed by the crane on the top of the tower, so a modular protection device with a large enough size and controllable weight is needed. Utility Model Content

[0004] In order to solve the above technical problems, the utility model designs a high-altitude operation protective device for a tower heat absorber of a solar thermal power generation system. The main purpose is to provide a modular, safe and convenient protective device for high-altitude operations of a tower solar heat absorption system.

[0005] The utility model adopts the following technical solutions:

[0006] A high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system, comprising a lower supporting annular track and an upper annular track installed on a tower body, the protection device also comprising a protection device frame, a plurality of box support devices, a plurality of module boxes, a lower driving wheel set device, an upper driving wheel set device and a tower crane;

[0007] The bottom and the upper part of the protection device frame are respectively equipped with a lower driving wheel assembly device and an upper driving wheel assembly device corresponding to the lower supporting circular track and the upper circular track. The upper part of the protection device frame is open, and multiple layers are arranged in the protection device frame. Each layer is used to place a module box body correspondingly, and a box body support device is arranged between each layer.

[0008] The lower driving wheel assembly device is used to be installed on the lower supporting circular track and move along the lower supporting circular track;

[0009] The upper driving wheel assembly device is used to be installed on the upper circular track and move along the upper circular track;

[0010] Tower cranes are used to lift module boxes and protective device frames.

[0011] Preferably, the box support device includes a support bracket, a reset device, a connecting rod assembly, a limit block and a trigger device. After the trigger device is triggered, the support bracket is extended through the connecting rod assembly. After the trigger device is released, the reset device drives the support bracket back to its position. After each layer of module box is hoisted, the trigger device of the box support device of the corresponding layer is triggered.

[0012] Preferably, the reset device is a spring.

[0013] Preferably, the connecting rod assembly includes a lifting support rod, a flip rod, a flip connecting rod and a connecting rod spring. The flip connecting rod is hinged on the protective device frame, one end of the flip connecting rod is connected to the trigger device, and the other end is connected to the connecting rod spring. The other end of the connecting rod spring is installed on the protective device frame. The upper part of the flip connecting rod supports the lifting support rod, the upper part of the lifting support rod supports the flip rod, and the flip rod is fixedly connected to the support bracket.

[0014] Preferably, a limit block is installed at the bottom of the flip rod on the protection device frame.

[0015] Preferably, the support bracket is L-shaped and is hinged to the protective device frame.

[0016] Preferably, the upper driving wheel assembly device and the lower driving wheel assembly device respectively include a telescopic rod, a fixed frame, a driving wheel, a damping mechanism, a connecting rod mechanism and a limiting wheel assembly. The upper part of the telescopic rod is fixedly mounted on the protective device frame, the bottom of the telescopic rod is connected to the fixed frame, the bottom of the fixed frame is equipped with a driving wheel, the damping mechanism is sleeved between the external fixed frame of the telescopic rod and the protective device frame, the connecting rod mechanism connects the protective device frame and the limiting wheel assembly, and after the telescopic rod is compressed and extended, the connecting rod mechanism is used to drive the limiting wheel assembly to clamp on both sides of the lower supporting circular track or the upper circular track.

[0017] Preferably, the connecting rod mechanism includes two clamping rods and two supporting rods, the limiting wheel group includes two limiting wheels, one end of the two clamping rods is hinged at the bottom of the protective device frame, and the other end is fixedly connected to the limiting wheel, the support rods are hinged at the middle position of the two clamping rods, and the other end of the support rods is hinged to the fixed frame.

[0018] Preferably, the damping mechanism adopts a compression spring.

[0019] The beneficial effects of the utility model are as follows: a relatively closed space can be formed on the working surface through the utility model, and the device avoids the auxiliary installation work in which people are suspended in the air during the installation and removal of the device to the greatest extent; the modular structure reduces the weight requirement for each lifting of the device, and solves the installation requirements for protective devices under the conditions of gradually increasing equipment size and limited lifting capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a use flow chart of the box support device in the utility model;

[0022] Figure 3 This is a structural schematic diagram of the lower driving wheel assembly device of the utility model when it is installed;

[0023] Figure 4 This is a schematic diagram of the structure of the utility model after the middle and lower driving wheel set device is installed;

[0024] In the figure: 1. protection device frame, 2. box support device, 3. module box, 4. lower driving wheel assembly device, 5. upper driving wheel assembly device, 6. lower supporting circular track, 7. upper circular track, 8. tower crane, 9. tower body, 2-1. supporting bracket, 2-2. spring, 2-3. limit block, 2-4. trigger device, 2-5. connecting rod assembly, 2-6. connecting rod spring, 4-1. driving wheel, 4-2. limit wheel assembly, 4-3. connecting rod mechanism, 4-4. damping mechanism. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0026] Example: Figure 1 As shown, a high-altitude operation protection device for a tower-type absorber of a solar thermal power generation system includes a protection device frame 1, multiple box support devices 2, multiple module boxes 3, a lower driving wheel assembly device 4, an upper driving wheel assembly device 5, a lower supporting circular track 6, an upper circular track 7, and a tower crane 8.

[0027] The lower supporting annular track and the upper annular track are installed on the tower body 9, and the bottom and the upper part of the protection device frame are respectively installed with the lower driving wheel group device and the upper driving wheel group device corresponding to the lower supporting annular track and the upper annular track. The upper part of the protection device frame is open, and multiple layers are arranged in the protection device frame, each layer is used to correspond to a module box, and a box support device is arranged between each layer; the lower driving wheel group device is used to be installed on the lower supporting annular track and move along the lower supporting annular track; the upper driving wheel group device is used to be installed on the upper annular track and move along the upper annular track; the tower crane is used for lifting the module box and the protection device frame.

[0028] During installation, the tower crane 8 is used to hoist the protection device frame 1 and connect it with the lower supporting circular track 6 and the upper circular track 7 installed on the tower body, and then the tower crane 8 is used to install the module box 3 layer by layer from bottom to top. The module box 3 slides to the specified position on the internal track of the protection device frame 1 and is supported by the box support device 2. The module boxes 3 are connected to each other to form a working space, wherein the height of the protection device frame 1 is determined according to the working conditions and is pre-installed as a whole.

[0029] like Figure 2 As shown, the box support device 2 includes a support bracket 2-1, a spring 2-2, a limit block 2-3, a trigger device 2-4, and a connecting rod assembly 2-5. The box support device is installed on the beam of the protective device frame 1. The connecting rod assembly includes a lifting support rod, a flip rod, a flip connecting rod and a connecting rod spring 2-6. The flip connecting rod is hinged on the protective device frame, one end of the flip connecting rod is connected to the trigger device, and the other end is connected to the connecting rod spring. The other end of the connecting rod spring is installed on the protective device frame. The upper part of the flip connecting rod supports the lifting support rod, and the upper part of the lifting support rod supports the flip rod. The flip rod is fixedly connected to the support bracket.

[0030] The spring 2-2 tightens the support bracket 2-1 so that it is retracted inside the protective device frame 1. The support bracket 2-1 is kept in position by contacting the limit block 2-3 through the flip rod. The connecting rod assembly 2-5 is pulled by the connecting rod spring 2-6 and is in a non-action state. When the module box 3 passes through and its bottom presses the trigger device 2-4 and causes it to contract, the connecting rod assembly 2-5 transmits the action to the support bracket 2-1 and causes it to rotate, so that one end of the support bracket extends out of the steel frame beam.

[0031] In this way, after the next module box 3 falls, it contacts the extended support bracket 2-1 and causes it to rotate. The support bracket 2-1 rotates until it contacts the limit block 2-3 to support the module box. Similarly, the support of each layer of the protective device frame is achieved after the layers of module boxes are hoisted. When the box needs to be removed, the box is lifted to disengage from the trigger device 2-4, and the connecting rod spring 2-6 acts on the connecting rod assembly 2-5 to restore it to its initial state. The spring 2-2 pulls the support bracket 2-1 to rotate and return to its initial state.

[0032] The upper driving wheel assembly device and the lower driving wheel assembly device respectively include a telescopic rod, a fixed frame, a driving wheel 4-1, a damping mechanism 4-4, a connecting rod mechanism 4-3 and a limiting wheel assembly 4-2. The upper part of the telescopic rod is fixedly installed on the protective device frame, the bottom of the telescopic rod is connected to the fixed frame, the bottom of the fixed frame is installed with a driving wheel, the damping mechanism is sleeved between the external fixed frame of the telescopic rod and the protective device frame, the connecting rod mechanism includes two clamping rods and two supporting rods, the limiting wheel assembly includes two limiting wheels, one end of the two clamping rods is hinged at the bottom of the protective device frame, and the other end is fixedly connected to the limiting wheel, the middle position of the two clamping rods is respectively hinged with a support rod, and the other end of the support rod is hinged to the fixed frame.

[0033] like Figure 3 As shown, during installation, the limiting wheel set is in an open state, which is convenient for the installation of the device. The damping mechanism can play a buffering and shock-absorbing role in the installation of the device, and can also bounce the limiting wheel set when unloading. Figure 4 As shown, after installation, the telescopic rod is compressed and contracted, and the two support rods drive the clamping rods to clamp inward, and the limiting wheels at the tail ends of the two clamping rods fit with the track to play a limiting and locking role.

[0034] Installation and use instructions for the device: Install the lower circular track 6 and the upper circular track 7, and fix them to the tower body by rigid connection. Use spring 2-2 to connect the support bracket 2-1 and the protection device frame 1, so that the support bracket 2-1 is close to the upper limit block 2-4, and then use the tower crane 8 to hoist the upper lifting point of the protection device frame 1, and hoist the protection device frame 1 above the lower support circular track 6 of the track, and slowly lower it until the lower drive wheel assembly device 4 contacts the lower support circular track 6, and then continue to lower it until the upper drive wheel assembly device 5 contacts the upper circular track 7, and then lock the upper drive wheel assembly device 5 through the limit wheel assembly 4-2, start the drive and check that the protection device frame 1 moves forward and backward normally. Use the tower crane 8 to install the module box 3 layer by layer from bottom to top. After each layer of module box 3 is in place, the box support device 2 will be opened and provide support for the next layer of block box 3. When dismantling, the box support device 2 will automatically retract, allowing the module box 3 to be hoisted out layer by layer from top to bottom. After all the module boxes 3 are in place, the telescopic door in the box is opened to make its end face fit closely to the working surface to form a relatively closed space, and the installation of the device is completed.

[0035] Description of the device usage process: The lower driving wheel assembly device 4 and the upper driving wheel assembly device 5 operate simultaneously, driving the protection device frame 1 and the module box 3 as a whole to perform circular motion along the track. The interior of each layer of the module box 3 can be pre-installed with the required equipment and materials as needed. Personnel and materials can be sent into each layer of the box through the doors and ladders connected between the module boxes 3. Materials can be lifted from the door of the uppermost module box 3 to the interior of each layer of the box through the tower crane 8.

[0036] The device can be used to form a relatively closed space on the working surface. The device greatly avoids the auxiliary installation work in which people are suspended in the air during the installation and removal of the device. The modular structure reduces the weight requirement for each lifting of the device, and solves the installation needs of protective devices under the conditions of gradually increasing equipment size and limited lifting capacity.

[0037] A corresponding complete set of devices also includes cables, thermocouples, temperature monitoring systems, drive control systems, insulation, etc. Since the above components are not highly relevant to the basic principles of the utility model, they will not be elaborated in detail here.

[0038] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A high-altitude operation protection device for a tower-type heat absorber of a solar thermal power generation system, comprising a lower supporting annular track and an upper annular track installed on a tower body, characterized in that: The protection device also includes a protection device frame, a plurality of box support devices, a plurality of module boxes, a lower drive wheel set device, an upper drive wheel set device and a tower crane; The bottom and the upper part of the protection device frame are respectively equipped with a lower driving wheel assembly device and an upper driving wheel assembly device corresponding to the lower supporting circular track and the upper circular track. The upper part of the protection device frame is open, and multiple layers are arranged in the protection device frame. Each layer is used to place a module box body correspondingly, and a box body support device is arranged between each layer. The lower driving wheel assembly device is used to be installed on the lower supporting circular track and move along the lower supporting circular track; The upper driving wheel assembly device is used to be installed on the upper circular track and move along the upper circular track; Tower cranes are used to lift module boxes and protective device frames.

2. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 1 is characterized in that: The box support device includes a support bracket, a reset device, a connecting rod assembly, a limit block and a trigger device. After the trigger device is triggered, the support bracket is extended through the connecting rod assembly. After the trigger device is released, the reset device drives the support bracket back to its position. After each layer of module boxes is hoisted, the trigger device of the box support device of the corresponding layer is triggered.

3. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 2 is characterized in that: The reset device adopts a spring.

4. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 2 is characterized in that: The connecting rod assembly includes a lifting support rod, a flip rod, a flip connecting rod and a connecting rod spring. The flip connecting rod is hinged on the protective device frame. One end of the flip connecting rod is connected to the trigger device, and the other end is connected to the connecting rod spring. The other end of the connecting rod spring is installed on the protective device frame. The upper part of the flip connecting rod supports the lifting support rod, the upper part of the lifting support rod supports the flip rod, and the flip rod is fixedly connected to the support bracket.

5. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 4 is characterized in that: A limiting block is installed at the bottom of the flip rod on the protection device frame.

6. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 2 is characterized in that: The support bracket is L-shaped and is hinged on the protection device frame.

7. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 1 is characterized in that: The upper driving wheel assembly device and the lower driving wheel assembly device respectively include a telescopic rod, a fixing frame, a driving wheel, a damping mechanism, a connecting rod mechanism and a limiting wheel assembly. The upper part of the telescopic rod is fixedly installed on the protective device frame, the bottom of the telescopic rod is connected to the fixing frame, the bottom of the fixing frame is installed with a driving wheel, the damping mechanism is sleeved between the outer fixing frame of the telescopic rod and the protective device frame, the connecting rod mechanism connects the protective device frame and the limiting wheel assembly, and after the telescopic rod is compressed and extended, the connecting rod mechanism is used to drive the limiting wheel assembly to clamp on both sides of the lower supporting circular track or the upper circular track.

8. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 7 is characterized in that: The connecting rod mechanism includes two clamping rods and two supporting rods, and the limiting wheel group includes two limiting wheels. One end of the two clamping rods is hinged at the bottom of the protective device frame, and the other end is fixedly connected to the limiting wheel. The middle position of the two clamping rods is hinged with supporting rods respectively, and the other end of the supporting rods is hinged to the fixing frame.

9. The high-altitude operation protection device for a tower heat absorber of a solar thermal power generation system according to claim 7 is characterized in that: The damping mechanism adopts a compression spring.

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