Sliding film device for cooling tower construction, construction system and use method

Abstract

The invention relates to the technical field of cooling tower construction, in particular to a sliding film device for cooling tower construction, a construction system and a using method. The invention discloses a slip form device for cooling tower construction. The at least three sliding mode units are suitable for being arranged in the circumferential direction of the cooling tower, and a spherical hinge connecting piece is connected between every two adjacent sliding mode units. The invention provides a slip form device for construction of a cooling tower, a construction system and a using method, and aims to solve the problems that a traditional slip form system is prone to perpendicularity deviation and position drifting in a high-altitude operation environment, and due to the fact that the shape of the cooling tower is complex, when the cooling tower faces complex structure parts such as a water collecting system in construction, the construction cost is low. And the problem that adjustment cannot be carried out due to position deviation is solved.

Description

Technical Field

[0001] This invention relates to the field of cooling tower construction technology, specifically to a sliding film device, construction system, and method of use for cooling tower construction. Background Technology

[0002] Cooling towers, as core equipment in industrial circulating cooling water systems, are widely used in important industrial fields such as thermal power generation, petrochemicals, and steel metallurgy. Traditional construction of high-level cooling towers mainly employs two techniques: the fixed formwork method and the sliding formwork method. The fixed formwork method involves layered pouring, which, while relatively easy to control in terms of quality, has a long construction cycle, high labor costs, and requires a large amount of formwork. The sliding formwork method, driven by hydraulic equipment, involves the continuous upward sliding of the formwork while concrete is poured. This method enables continuous construction, significantly shortening the construction period, and is therefore widely used in the construction of large cooling towers. Currently, the main sliding formwork systems used domestically and internationally include hydraulic climbing sliding formwork, guide rail sliding formwork, and free sliding formwork technologies. These technologies are relatively mature in the construction of conventional circular or square cooling towers.

[0003] However, existing sliding membrane construction technology faces numerous technical bottlenecks and safety hazards in the construction of high-level water collection cooling towers. Currently, traditional sliding membrane systems are prone to verticality deviations and positional drift in high-altitude working environments. Due to the complex shape of the cooling tower, positional deviations cannot be adjusted when dealing with complex structural parts such as the water collection system during construction. Summary of the Invention

[0004] In view of this, the present invention provides a sliding sheet device, construction system and usage method for cooling tower construction, to solve the problems that traditional sliding sheet systems are prone to verticality deviation and position drift in high-altitude working environments, and that due to the complex shape of the cooling tower, position deviation cannot be adjusted when facing complex structural parts such as the water collection system during construction.

[0005] In a first aspect, the present invention provides a sliding film device for cooling tower construction, comprising: Ball joint connector; At least three sliding membrane units, the at least three of which are adapted to be arranged circumferentially along the cooling tower, and adjacent sliding membrane units are connected by ball joints.

[0006] The ball joint connector drives the sliding membrane unit to rotate, causing an angular deviation of ±15 degrees between adjacent units, thereby adjusting the position to adapt to the construction of complex structural parts.

[0007] In one alternative embodiment, a connecting rope is also included, wherein the ball joint connector and the side of the synovial unit are provided with a connecting rope.

[0008] In one alternative embodiment, the system further includes an adjustment element and a tilt sensor, with each of the diaphragm units having both a tilt sensor and an adjustment element.

[0009] Secondly, the present invention also provides a construction system, including the above-mentioned sliding film device for cooling tower construction.

[0010] In one alternative embodiment, the system further includes a screw conveyor and a tower crane, which are located on opposite sides of the cooling tower.

[0011] In an alternative implementation, a laser positioning component is also included for ranging the sliding unit.

[0012] In one alternative implementation, a water collection assembly is also included, with the tower crane's boom used to lift the water collection assembly to a predetermined position on the cooling tower.

[0013] In an optional implementation, a GPS positioning module is also included, with each of the synovial units having a GPS positioning module.

[0014] In one optional implementation, the system further includes a control host, which is connected to the GPS positioning module, the laser rangefinder, the ball joint connector, and the tilt sensor circuitry, respectively.

[0015] Thirdly, the present invention also provides a method for using a sliding membrane device for cooling tower construction, wherein a ball joint connector drives the sliding membrane unit to rotate. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the construction system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the sliding membrane unit, ball joint connector, and connecting rope according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the control host, GPS module, and industrial Ethernet connection according to an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the installation process of the water collection component according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Cooling tower; 2. Slipform device; 201. Slipform unit; 202. Ball joint connector; 203. Connecting rope; 204. Elevator; 205. Tilt sensor; 206. Adjusting component; 3. Water collection assembly; 4. Tower crane; 401. Boom; 5. Screw conveyor; 6. Laser positioning assembly; 601. Laser guide; 602. Laser rangefinder; 7. GPS positioning module; 8. Control host; 9. Industrial Ethernet. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0021] According to an embodiment of the present invention, in one aspect, a sliding film device 2 for construction of a cooling tower 1 is provided, comprising: a ball joint connector 202; at least three sliding film units 201, the at least three sliding film units 201 being adapted to be arranged circumferentially along the cooling tower 1, and ball joint connectors 202 connecting adjacent sliding film units 201.

[0022] The ball joint connector 202 drives the sliding membrane unit 201 to rotate, causing an angular deviation of ±15 degrees between adjacent units, thereby adjusting the position to adapt to the construction of complex structural parts. In this embodiment, there are 8 sliding membrane units 201, each preferably 3-5 meters long and 4-6 meters high (the height and length can be adjusted according to the on-site construction requirements).

[0023] In one embodiment, such as Figure 1 , Figure 2 As shown, it also includes a connecting rope 203. The ball joint connector 202 and the sliding membrane unit 201 are provided with a connecting rope 203 on their sides. The connecting rope 203 transmits the rotation state of the ball joint connector 202 to the sliding membrane unit 201 connected to it.

[0024] In one embodiment, such as Figure 1 , Figure 2 , Figure 3As shown, it also includes an adjusting component 206 and a tilt sensor 205. Each sliding diaphragm unit 201 is equipped with a tilt sensor 205 and an adjusting component 206. In this embodiment, the adjusting component 206 is a servo motor driven adjusting component 206 with a correction accuracy of ±5mm. The entire positioning system is connected to the central control system via an industrial Ethernet 9, with a data update frequency of 10Hz. The measurement accuracy of the tilt sensor 205 is ±0.01 degrees. To achieve the lifting of the sliding diaphragm unit 201, as... Figure 2 As shown, each sliding diaphragm unit 201 is equipped with a lifter 204 at its bottom. The lifter 204 is hydraulic and adopts a double-acting design, with a maximum lifting force of 150kN and a lifting speed that can be steplessly adjusted within the range of 0.1-0.5m / h. In addition, the sliding diaphragm unit 201 is plate-shaped, made of high-strength steel plate with a thickness of 12mm, and coated with polytetrafluoroethylene to reduce frictional resistance.

[0025] According to an embodiment of the present invention, another aspect provides a construction system including the sliding film device 2 for construction of the cooling tower 1 described above.

[0026] In one embodiment, such as Figure 1 , Figure 4 As shown, the cooling tower 1 also includes a screw conveyor 5 and a tower crane 4, which are located on both sides of the cooling tower 1. In this embodiment, the screw conveyor 5 is arranged vertically along the tower wall, with a conveying capacity of 30-50 m³ / h. It is driven by a variable frequency motor and equipped with two concrete pumps, each with a conveying capacity of 90 m³ / h, as backups for each other. The tower crane 4 is a tower crane with an internal climbing design, a maximum lifting capacity of 8 tons, and a lifting height of up to 150 meters. It is equipped with a variable frequency speed control system to drive the boom 401 to move up and down along the direction of the cooling tower 1, and the lifting speed can be adjusted within the range of 5-40 m / min.

[0027] In one embodiment, such as Figure 1 , Figure 4 As shown, it also includes a laser ranging and positioning component for measuring the distance to the sliding membrane unit 201. In this embodiment, the laser positioning component 6 includes a laser guide 601 and a laser rangefinder 602. The laser guide 601 is located outside the cooling tower 1, and the laser rangefinder 602 has a measurement accuracy of ±2mm and a measurement range of 0.5-200 meters, enabling real-time monitoring of the distance between the sliding membrane unit 201 and the tower wall. During ranging and positioning, it achieves precise positioning with a positioning reference point pre-embedded in the tower body of the cooling tower 1, with a positioning accuracy of ±3mm.

[0028] In one embodiment, such as Figure 1 , Figure 4As shown, it also includes a water collection component 3. The boom 401 of the tower crane 4 is used to lift the water collection component 3 to a preset position on the cooling tower 1. The water collection system components are prefabricated in the factory using fiberglass or PVC materials. Each component is 2-3 meters long and weighs 200-300 kg. Positioning accuracy of ±3 mm is achieved through laser guidance technology. The boom 401 has a maximum lifting capacity of 2 tons, a working radius of 15 meters, and is equipped with an anti-sway control system to ensure stability during the lifting process.

[0029] In one embodiment, such as Figure 1 , Figure 3 As shown, it also includes a GPS positioning module 7. Each sliding diaphragm unit 201 is equipped with a GPS positioning module 7. The GPS positioning module 7, the laser ranging positioning component and the tilt sensor 205 work together to perform three-dimensional positioning guidance. The GPS positioning module 7 adopts RTK differential positioning technology, and the planar positioning accuracy reaches ±5mm and the elevation accuracy reaches ±10mm.

[0030] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, it also includes a control host 8, which is connected to the GPS positioning module 7, laser rangefinder 602, ball joint connector 202, and tilt sensor 205 via wiring. To achieve this connection, the data is transmitted to the central control host 8 via an industrial Ethernet 9, with a data update frequency of 10Hz to ensure real-time performance and accuracy. In this embodiment, the ball joint connector 202 is a prior art technology.

[0031] According to an embodiment of the present invention, in another aspect, a method of using a construction system is also provided, comprising the following steps: (1) Stop the sliding membrane device 2 from climbing to the first preset height, and determine the installation position by the laser guide 601 in conjunction with the positioning reference point embedded in the tower body of the cooling tower 1 and the laser rangefinder 602. (2) According to the installation position, the sliding film unit 201 is adjusted to rotate relative to the tower wall of the cooling tower 1 by the ball joint connector 202, and fine-tuned to the preset position with the help of the tilt sensor 205 and the adjusting component 206; (3) The sliding membrane unit 201 is fixedly connected, and the materials are transported by the screw conveyor 5 and the tower crane 4 for construction. After the construction is completed, the quality inspection and acceptance work is carried out. (4) After the acceptance is qualified, the lifting device 204 will lift the sliding device 2 to the second preset height and repeat steps (1)-(3).

[0032] It is important to note that when the slipform device 2 reaches the construction position of the water collection component 3, the tower crane 4's boom 401 will hoist the water collection component 3 to the construction position for installation. During the climbing process of the slipform device 2, the lifting speed is 0.25 m / h for the 0-30 meter section, 0.35 m / h for the 30-75 meter section, and 0.4 m / h for the section above 75 meters. Equipment maintenance and inspection are performed every 4 hours. Furthermore, the control host 8 adopts a redundant design, with the main controller and backup controller operating simultaneously. It is equipped with an intelligent scheduling algorithm that automatically optimizes the material supply plan based on construction progress, weather conditions, and equipment status.

[0033] When the sliding membrane connector is raised to 5 meters before the installation height of the water collection component, the installation of embedded parts (anchor steel plates, positioning bolt sleeves, and guide rail embedded grooves) begins. These embedded parts are precisely positioned using a specialized mold for the sliding membrane device. In this embodiment, the construction steps for the water collection component are as follows: (1) During the sliding phase, the hydraulic system maintains pressure to keep the position of the sliding connector and a temporary working platform (suspended or supported) is installed. (2) The tower crane lifts the prefabricated components to 500mm above the installation position and precisely positions them using the laser guide 601 (X, Y, Z three-way adjustment); it then slowly lowers them into place using the guide rail groove; (3) The tower crane lifts the prefabricated components to 500mm above the installation position, accurately positions them using a laser guidance system (X, Y, Z three-way adjustment), slowly lowers them, and guides them into place using guide rails.

[0034] It should be noted that: the installation of each section of the water collector component must be completed before the initial setting of the concrete, and a detachable formwork section should be set at the height of the water collector; the water collector position adopts a two-stage pouring process.

[0035] The sliding membrane device 2 is used for continuous construction of the cooling tower body. It stops when the sliding membrane reaches the predetermined height, at which point the prefabricated water collection system components are installed using the tower crane's attached lifting arm. After the water collection system is installed, sliding membrane construction continues to the designed height. In other words, the sliding membrane device 2 pauses after reaching the water collection system installation position, and the prefabricated water collection components are installed on the working platform provided by the sliding membrane. After installation, construction continues using the sliding membrane device. The two devices are used in conjunction and are employed in stages for construction.

[0036] The sliding film device 2 and construction system for construction of cooling tower 1 provided by the present invention have the following advantages: (1) The ball joint connector 202 drives the sliding film unit 201 to rotate, so that the adjacent units produce an angular deviation of ±15 degrees, thereby adjusting the position to adapt to the construction of complex structural parts; (2) Through the coordinated work of laser ranging, GPS positioning and tilt sensor 205, real-time accurate monitoring of the position and attitude of the sliding film is realized, and the positioning accuracy reaches the millimeter level, effectively ensuring the geometric accuracy and verticality requirements of the tower structure. The automatic correction device can adjust the position of the slip membrane in a timely manner according to the monitoring data, avoiding the generation of cumulative errors and ensuring the stability of the overall construction quality; (3) The synchronous installation process of the prefabricated water collection component 3 integrates the work that originally needed to be carried out in stages into an integrated construction, eliminating the secondary installation link in the traditional method; (4) The adjustment of the slip membrane unit 201 in various directions is realized through the lifting device 204, the adjusting part and the ball joint connector 202, realizing automatic correction. The slip membrane unit 201 can be adjusted in a timely manner according to the monitoring data, avoiding the generation of cumulative errors and ensuring the stability of the overall construction quality. As an alternative implementation, the number of synovial units 201 may be 3, 4, 5 or even more.

[0037] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A sliding film device for cooling tower construction, characterized in that, include: Ball joint connector (202); At least three sliding membrane units (201) are adapted to be arranged circumferentially along the cooling tower (1), and ball joint connectors (202) connect adjacent sliding membrane units (201).

2. The sliding film device for cooling tower construction according to claim 1, characterized in that, It also includes a connecting rope (203), and the ball joint connector (202) and the side of the sliding membrane unit (201) are provided with a connecting rope (203).

3. The sliding film device for cooling tower construction according to claim 2, characterized in that, It also includes an adjustment element (206) and a tilt sensor (205), with each of the sliding diaphragm units (201) having a tilt sensor (205) and an adjustment element (206).

4. A construction system, characterized in that, Includes the sliding film device for cooling tower construction as described in any one of claims 1-3.

5. The construction system according to claim 4, characterized in that, It also includes a screw conveyor (5) and a tower crane (4), which are located on both sides of the cooling tower (1).

6. The construction system according to claim 5, characterized in that, It also includes a laser positioning component (6) for measuring the distance of the slid unit (201).

7. The construction system according to claim 5, characterized in that, It also includes a water collection assembly (3), the boom (401) of the tower crane (4) for hoisting the water collection assembly (3) to a preset position on the cooling tower (1).

8. The construction system according to claim 6, characterized in that, It also includes a GPS positioning module (7), and each of the sliding membrane units (201) is provided with a GPS positioning module (7).

9. The construction system according to claim 8, characterized in that, It also includes a control host (8), which is connected to the GPS positioning module (7), the laser rangefinder (602), the ball joint connector (202), and the tilt sensor (205) respectively.

10. A method of using a sliding sheet device for cooling tower construction, for using the sliding sheet device for cooling tower construction as described in claim 1, characterized in that, The ball joint connector (202) drives the sliding diaphragm unit (201) to rotate.

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