A method for controlling cracks in the pool body of a seawater desalination plant

Abstract

The present invention discloses a method for controlling cracks in the pool body of a seawater desalination plant, including the selection of anti-seepage, anti-leakage and anti-rust concrete and the process for controlling cracks in the pool body. It is characterized in that the selection of the anti-seepage, anti-leakage and anti-rust concrete includes the following steps: S1. Selection: Select the special waterproof agent for YL series high-performance concrete; S2. Detection: Detect the frost resistance, impermeability grade of the special waterproof agent and the concrete chloride ion penetration resistance performance index. The present invention adds a waterproof agent with strong frost resistance, impermeability grade and chloride ion penetration resistance to the traditional concrete, designs anti-seepage concrete through the mixing test of the concrete mix ratio, and adopts the construction technology of anti-seepage and anti-cracking to control the construction processes such as the pouring of mass concrete and the pouring of the pool wall with a relatively high height. By optimizing practices such as adding an anti-cracking steel mesh in the pool body protective layer, the construction quality is improved and the anti-seepage performance of the pool body is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete, and particularly to a method for controlling cracks in the pool body of a seawater desalination plant. Background Art

[0002] Seawater desalination, also known as seawater freshening and seawater desalting, refers to the process of removing excess salts and minerals from water to obtain fresh water. Seawater desalination plants are located in areas close to the sea. Groundwater has medium corrosiveness to reinforced concrete structures, and the water storage structures in the water treatment plant area have high requirements for durability. The compactness and presence of cracks in the structure concrete have become the key factors affecting the project durability.

[0003] The existing traditional concrete has poor impermeability and anti-corrosion performance. The pool body of the pool in the seawater desalination plant has a large span and a high pool wall, making it difficult to control cracks. In traditional construction processes, it is easy to have problems such as incomplete vibration compaction of concrete and excessive free fall height of concrete, resulting in diseases such as segregation and cracks, which affect the integrity of the pool and cause leakage. Therefore, a method for controlling cracks in the pool body of a seawater desalination plant is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and a method for controlling cracks in the pool body of a seawater desalination plant is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A method for controlling cracks in the pool body of a seawater desalination plant, including the selection of anti-seepage, anti-leakage and anti-rust concrete and the process for controlling cracks in the pool body. It is characterized in that the selection of anti-seepage, anti-leakage and anti-rust concrete includes the following steps:

[0007] S1. Selection: Select the YL series high-performance concrete special waterproofing agent.

[0008] S2. Detection: Detect the frost resistance, impermeability grade of the special waterproofing agent and the concrete chloride ion penetration resistance performance index.

[0009] S3. Experiment: Use a mixer to conduct a mixing experiment on the concrete mix ratio to obtain an anti-seepage, anti-leakage and anti-rust concrete.

[0010] The process for controlling cracks in the pool body includes the following steps:

[0011] Step 1: Select the three-piece water-stop tension rod with a diameter of 14 - 16 mm.

[0012] Step 2: Compare and analyze the solvent-based release agent, conduct a field experiment to determine the effect of the release agent, and conduct a comparative selection and evaluation based on the experimental effect.

[0013] Step 3: The layered thickness of the concrete pouring for the water storage structure shall be strictly controlled not to exceed one time the working length of the vibrating rod to ensure the vibrating quality. For the concrete poured with a 50-type vibrating rod, the layered thickness is 450 mm, and for the concrete poured with a 30-type vibrating rod, the layered thickness is 300 mm.

[0014] Step 4: When pouring the concrete for the water storage structure, plan the pouring route in advance and conduct technical disclosure to the workers. The team members shall supervise the workers on-site to ensure that they construct according to the planned route and ensure that the vibrating times are three times.

[0015] Step 5: Check and verify the effect of the constructed concrete.

[0016] In the above method for controlling the cracks in the pool body of a seawater desalination plant, the mixer used in the selection of the anti-seepage, anti-leakage and rust-resistant concrete includes a mixing drum. The bottom of the mixing drum is fixedly connected with a plurality of supporting feet. A discharge valve is arranged at the bottom of the mixing drum. An L-shaped bracket is fixedly connected to the outer wall of the mixing drum. A motor is fixedly installed on the bracket. A main shaft is rotatably connected through the bracket, and the main shaft is coaxially arranged with the mixing drum. The upper end of the main shaft is coaxially fixed to the output shaft of the motor. A plurality of stirring rods are fixedly connected to the main shaft.

[0017] In the above method for controlling the cracks in the pool body of a seawater desalination plant, a fixing plate is fixedly connected to the position of the main shaft near the upper end. One end of the fixing plate away from the main shaft is rotatably connected with a rotating shaft through a bearing. A cylindrical material conveying pipe is fixedly connected to the bottom of the fixing plate, and the material conveying pipe is coaxially arranged with the rotating shaft. A spiral blade is fixedly connected to the part of the rotating shaft located inside the material conveying pipe. A discharge port is opened on the pipe wall of the material conveying pipe near the top. A gear is coaxially fixed to the upper end of the rotating shaft. An annular rack is fixedly connected to the inner barrel wall of the mixing drum near the top, and the annular rack meshes with the gear.

[0018] In the above method for controlling the cracks in the pool body of a seawater desalination plant, a feeding pipe is fixedly penetrated through the bracket, and a feeding hopper is fixedly connected to the upper end of the feeding pipe.

[0019] In the above method for controlling the cracks in the pool body of a seawater desalination plant, a fixing box is fixedly connected to the bottom of the bracket. The main shaft is rotatably connected through the fixing box in a sealed manner. A cavity is opened in the main shaft. A liquid guiding pipe is fixedly connected to the main shaft below the fixing box and the liquid guiding pipe is communicated with the cavity. A plurality of liquid flowing holes are equidistantly opened on the liquid guiding pipe. A communication port is opened in the part of the main shaft located inside the fixing box. An inclined connecting pipe is fixedly penetrated through the bracket. The upper end of the connecting pipe is fixedly connected with a feeding box. A feeding cavity is opened at the bottom of the feeding box. A water inlet groove is opened at the top of the feeding box and is communicated with the feeding cavity.

[0020] In the above method for controlling cracks in the pool body of a seawater desalination plant, liquid storage cavities are provided on both sides of the water inlet tank for the feeding tank. Two liquid injection ports are provided at the top of the feeding tank and are respectively connected to the two liquid storage cavities. A communication groove is provided at the bottom of each liquid storage cavity and is connected to the feeding cavity. Cylindrical control grooves are provided on the outer walls of both sides of the feeding tank and are respectively connected to the two communication grooves. A liquid transporting block is hermetically and rotatably connected in each control groove. A connecting shaft is rotatably connected to the groove walls on both sides of the water inlet tank. A plurality of rotating plates are fixedly connected to the connecting shaft. The two ends of the connecting shaft respectively extend into the control grooves on both sides and are coaxially fixed to the liquid transporting block.

[0021] In the above method for controlling cracks in the pool body of a seawater desalination plant, a sliding plate is slidably connected in each control groove. A threaded shaft is rotatably connected through the sliding plate. A threaded groove is provided on the liquid transporting block. The threaded shaft is rotationally connected to the threaded groove on the liquid transporting block through a thread. Two liquid transporting grooves are provided on each liquid transporting block. A piston block is hermetically and slidably connected in each liquid transporting groove. The same-side ends of the two piston blocks are fixed to the sliding plate. A control knob is coaxially fixed to the end of the threaded shaft outside the control groove.

[0022] In the above method for controlling cracks in the pool body of a seawater desalination plant, a plurality of stirring rods on the side of the mixing barrel away from the material conveying pipe are jointly fixed with a scraping plate, and the scraping plate is in contact with the barrel wall of the mixing barrel.

[0023] The present invention has the following advantages:

[0024] In the present invention, a waterproof agent with strong anti-freeze-thawing, anti-seepage and anti-chloride-ion penetration performance is added to traditional concrete, and a mixing test is carried out on the concrete mix ratio to design anti-leakage concrete, which has good anti-seepage, anti-leakage and rust resistance performance when used for the casting of the factory pool, and increases the service life of the factory pool;

[0025] In the present invention, the factory pool adopts an anti-seepage and anti-cracking construction process to control the construction processes such as the casting of large-volume concrete and the casting of pool walls with a relatively high height. By optimizing practices such as adding an anti-cracking steel mesh in the pool body protection layer, the construction quality is improved, and the anti-seepage performance of the pool body is ensured;

[0026] The present invention is provided with a special concrete mixer, which uses the rotational lifting force of the auger blades to transport the materials at the bottom of the mixing barrel to the upper part, avoiding the uneven mixing of materials caused by the stratification of materials due to the feeding sequence, and at the same time improving the mixing efficiency of the concrete materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a planning diagram of the concrete pouring route of the pool in a method for controlling cracks in the pool body of a seawater desalination plant proposed by the present invention;

[0028] Figure 2 Structural schematic diagram of a method for controlling cracks in the pool body of a seawater desalination plant proposed by the present invention;

[0029] Figure 3 Structural schematic diagram of the feeding box part in a method for controlling cracks in the pool body of a seawater desalination plant proposed by the present invention;

[0030] Figure 4 Enlarged schematic diagram of location A in a method for controlling cracks in the pool body of a seawater desalination plant proposed by the present invention.

[0031] In the figure: 1 mixing drum, 2 discharge valve, 3 support, 4 motor, 5 main shaft, 6 stirring rod, 7 feeding pipe, 8 feeding hopper, 9 fixing plate, 10 rotating shaft, 11 material conveying pipe, 12 auger blade, 13 discharge port, 14 gear, 15 annular rack, 16 liquid guiding pipe, 17 liquid flowing hole, 18 cavity, 19 fixing box, 20 communication port, 21 connecting pipe, 22 feeding box, 23 feeding cavity, 24 water inlet tank, 25 liquid storage cavity, 26 liquid injection port, 27 communication groove, 28 control groove, 29 liquid conveying block, 30 connecting shaft, 31 rotating plate, 32 sliding plate, 33 threaded shaft, 34 threaded groove, 35 liquid conveying groove, 36 piston block, 37 control button, 38 scraper, 100 strengthening belt. Specific implementation manner

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are only for illustrative purposes and do not intend to limit the scope of the present invention.

[0033] A method for controlling cracks in the pool body of a seawater desalination plant includes the selection of anti-seepage, anti-leakage and anti-rust concrete and the process of controlling cracks in the pool body. It is characterized in that the selection of anti-seepage, anti-leakage and anti-rust concrete includes the following steps:

[0034] S1. Selection: Select the YL series high-performance concrete special waterproofing agent;

[0035] S2. Detection: Detect the anti-freeze-thaw, anti-seepage grade and concrete anti-chloride ion penetration performance indexes of the special waterproofing agent, as shown in the following table;

[0036] S3. Test: Use a mixer to conduct a mixing test on the concrete mix ratio to obtain an anti-seepage, anti-leakage and anti-rust concrete. The following table is the mix ratio of the new anti-seepage, anti-leakage and anti-rust concrete of the present invention;

[0037] The process of controlling cracks in the pool body includes the following steps:

[0038] Step 1: Select a three-section water-stop tension rod of 14 - 16 mm;

[0039] Step 2: Compare and analyze the solvent-based release agent, conduct on-site tests to determine the effect of the release agent, and conduct comparative selection and evaluation based on the test results;

[0040] Step 3: The layered thickness of the concrete pouring for the water storage structure shall be strictly controlled not to exceed one time the working length of the vibrating rod to ensure the vibration quality. For the concrete poured with a 50-type vibrating rod, the layered thickness is 450 mm, and for the concrete poured with a 30-type vibrating rod, the layered thickness is 300 mm;

[0041] Step 4: When pouring the concrete for the water storage structure, plan the pouring route in advance and conduct technical disclosure to the workers. The team members shall supervise the workers on-site to ensure that they construct according to the planned route and ensure that the vibration is carried out three times. The pouring route of the pool concrete is planned as Figure 1 shown. Let the concrete flow by itself at a range of 1500 mm on each side of the strengthening belt 100. After pouring 2 layers of concrete thickness according to the planned route, replace the high-strength concrete for pouring the strengthening belt 100. The pouring layer thickness of the concrete for the strengthening belt 100 shall be greater than the two-layer thickness completed on both sides.;

[0042] Step 5: Check and verify the effect of the constructed concrete.

[0043] Refer to Figures 2-4 , the mixer used in the selection of anti-seepage, anti-leakage and rust-resistant concrete includes a mixing drum 1. Multiple support feet are fixedly connected to the bottom of the mixing drum 1. A discharge valve 2 is arranged at the bottom of the mixing drum 1. An L-shaped bracket 3 is fixedly connected to the outer wall of the mixing drum 1. A motor 4 is fixedly installed on the bracket 3. A main shaft 5 is rotatably connected through the bracket 3. The main shaft 5 is coaxially arranged with the mixing drum 1. The upper end of the main shaft 5 is coaxially fixed to the output shaft of the motor 4. Multiple stirring rods 6 are fixedly connected to the main shaft 5.

[0044] A fixing plate 9 is fixedly connected to the main shaft 5 near the upper end. One end of the fixing plate 9 away from the main shaft 5 is rotatably connected to a rotating shaft 10 through a bearing. A cylindrical material conveying pipe 11 is fixedly connected to the bottom of the fixing plate 9. The material conveying pipe 11 is coaxially arranged with the rotating shaft 10. A spiral blade 12 is fixedly connected to the part of the rotating shaft 10 located inside the material conveying pipe 11. A discharge port 13 is opened on the pipe wall of the material conveying pipe 11 near the top. A gear 14 is coaxially fixed to the upper end of the rotating shaft 10. A circular rack 15 is fixedly connected to the inner barrel wall of the mixing drum 1 near the top. The circular rack 15 meshes with the gear 14. A feeding pipe 7 is fixedly penetrated through the bracket 3. A feeding hopper 8 is fixedly connected to the upper end of the feeding pipe 7. Multiple stirring rods 6 on the side of the mixing drum 1 away from the material conveying pipe 11 are jointly fixed with a scraping plate 38. The scraping plate 38 is fitted to the barrel wall of the mixing drum 1.

[0045] A fixed box 19 is fixedly connected to the bottom of the support 3. The main shaft 5 is hermetically and rotationally connected to the fixed box 19 through penetration. A cavity 18 is provided inside the main shaft 5. A liquid guide pipe 16 is fixedly connected to the main shaft 5 below the fixed box 19, and the liquid guide pipe 16 is communicated with the cavity 18. A plurality of liquid flow holes 17 are equidistantly arranged on the liquid guide pipe 16. A communication port 20 is provided in the part of the main shaft 5 located inside the fixed box 19. An inclined connecting pipe 21 is fixedly penetrated through the support 3. The upper end of the connecting pipe 21 is fixedly connected to a feeding box 22. A feeding cavity 23 is provided at the bottom of the feeding box 22. A water inlet groove 24 is provided at the top of the feeding box 22 and is communicated with the feeding cavity 23.

[0046] Liquid storage cavities 25 are provided on both sides of the feeding box 22 where the water inlet groove 24 is located. Two liquid injection ports 26 are provided at the top of the feeding box 22 and are respectively communicated with the two liquid storage cavities 25. A communication groove 27 is provided at the bottom of each liquid storage cavity 25 and is communicated with the feeding cavity 23. Cylindrical control grooves 28 are respectively provided on the outer walls on both sides of the feeding box 22 and are communicated with the two communication grooves 27. A liquid transporting block 29 is hermetically and rotationally connected in each control groove 28. A connecting shaft 30 is rotatably connected to the groove walls on both sides of the water inlet groove 24. A plurality of rotating plates 31 are fixedly connected to the connecting shaft 30. The two ends of the connecting shaft 30 respectively extend into the control grooves 28 on both sides and are coaxially fixed to the liquid transporting block 29. A sliding plate 32 is slidably connected in each control groove 28. A threaded shaft 33 is rotatably penetrated through the sliding plate 32. A threaded groove 34 is provided on the liquid transporting block 29. The threaded shaft 33 is rotationally connected to the threaded groove 34 on the liquid transporting block 29 through threads. Two liquid transporting grooves 35 are provided on each liquid transporting block 29. A piston block 36 is hermetically and slidably connected in each liquid transporting groove 35. The same-side ends of the two piston blocks 36 are fixed to the sliding plate 32. A control knob 37 is coaxially fixed to the end of the threaded shaft 33 located outside the control groove 28.

[0047] When the equipment in the present invention is in use, first, the cement, sand, gravel and admixture required for concrete are poured into the feeding hopper 8 according to the ratio. The cement, sand, gravel and admixture enter the mixing drum 1 through the feeding hopper 8 and the feeding pipe 7. Then, the waterproofing agent to be added is added into the liquid storage cavity 25 of the feeding tank 22. After that, according to the ratio of the waterproofing agent, the control knob 37 is rotated to drive the threaded shaft 33 to rotate. By controlling the sliding of the threaded slide plate 32, the piston block 36 slides in the liquid transport groove 35, changing the volume of the liquid transport groove 35, so as to change the liquid transport volume of the liquid transport block 29 per revolution. Then, the external water pipe is connected to the water inlet groove 24. When water passes through the water inlet groove 24, it will drive the connecting shaft 30 to rotate by means of the impact force of water on the rotating plate 31, thus driving the liquid transport block 29 in the control groove 28 to rotate. Through the liquid transport groove 35, the waterproofing agent in the liquid storage cavity 25 is added proportionally. After the waterproofing agent is mixed with water, it enters the fixed box 19 through the connecting pipe 21, and then reaches the liquid guide pipe 16 through the cavity 18 on the main shaft 5 and finally flows out from multiple liquid flow holes 17 to be mixed with the cement, sand and gravel in the mixing drum 1. At the same time, when the motor 4 is started to drive the main shaft 5 to rotate, the stirring rod 6 further mixes the cement, sand, gravel, admixture with water and the waterproofing agent. During the mixing process, the material conveying pipe 11 rotates with the main shaft 5. Due to the meshing of the gear 14 and the annular rack 15, the rotating shaft 10 rotates around the main shaft 5 while also rotating itself. The lifting force generated by the rotation of the auger blade 12 transports the materials at the bottom of the mixing drum 1 to the upper part, avoiding the uneven mixing of materials caused by the stratification of materials due to the feeding order. During the mixing process, the scraper 38 scrapes off the materials adhered to the inner wall of the mixing drum 1 to fully participate in the mixing, ensuring the uniform mixing of the concrete materials.

[0048] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A method for controlling cracks in a desalination plant tank, comprising the selection of anti-seepage, anti-leakage and anti-rust concrete and a tank crack control process, characterized in that: The selection of the anti-seepage, anti-leakage and anti-rust concrete comprises the following steps: S1. Selection: Choose YL series high performance concrete waterproofing agent; S2. Testing: Testing the freeze-thaw resistance, impermeability grade of the special waterproofing agent and the concrete's resistance to chloride ion penetration performance index; S3. Test: A concrete mix ratio is tested using a mixer to obtain an anti-seepage, anti-leakage, and anti-rust concrete; The pool body crack control process includes the following steps: Step 1: Select a 14-16mm three-stage water-stop tension screw; Step 2: Compare and analyze solvent-based release agents, conduct on-site tests to determine the effectiveness of the release agents, and conduct comparative evaluation based on the test results; Step 3: The layer thickness of concrete poured for water storage structures must be strictly controlled to be no more than twice the working length of the vibrating rod to ensure the quality of vibration. The layer thickness of concrete poured with a 50-type vibrating rod is 450mm, and the layer thickness of concrete poured with a 30-type vibrating rod is 300mm. Step 4: When pouring concrete for the water storage structure, the pouring route is planned in advance and the workers are given technical instructions. Team members supervise the workers on site to ensure that they follow the planned route and that the vibration frequency is three times. Step 5: Check and verify the effect of the constructed concrete; The mixer used in the selection of the anti-seepage, anti-leakage and anti-rust concrete comprises a mixing drum (1), a plurality of legs are fixedly connected to the bottom of the mixing drum (1), a discharge valve (2) is provided at the bottom of the mixing drum (1), an L-shaped bracket (3) is fixedly connected to the outer wall of the mixing drum (1), a motor (4) is fixedly mounted on the bracket (3), a main shaft (5) is rotatably connected to the bracket (3), the main shaft (5) is coaxially arranged with the mixing drum (1), the upper end of the main shaft (5) is coaxially fixed with the output shaft of the motor (4), and a plurality of stirring rods (6) are fixedly connected to the main shaft (5); The main shaft (5) is fixedly connected to a fixed plate (9) near the upper end, and the fixed plate (9) is rotatably connected to a rotating shaft (10) at one end away from the main shaft (5) through a bearing, and the bottom of the fixed plate (9) is fixedly connected to a cylindrical material transport pipe (11), and the material transport pipe (11) is coaxially arranged with the rotating shaft (10), and the rotating shaft (10) is fixedly connected to an auger blade (12) in the part inside the material transport pipe (11), and a discharge port (13) is provided on the wall of the material transport pipe (11) near the top, and a gear (14) is coaxially fixedly connected to the upper end of the rotating shaft (10), and a ring rack (15) is fixedly connected to the inner wall of the mixing drum (1) near the top, and the ring rack (15) and the gear (14) are meshed with each other; A discharge pipe (7) is fixedly passed through the bracket (3), and a discharge hopper (8) is fixedly connected to the upper end of the discharge pipe (7); The bottom of the bracket (3) is fixedly connected with a fixing box (19), the main shaft (5) and the fixing box (19) are sealed and rotatably connected, a cavity (18) is provided in the main shaft (5), a liquid guide tube (16) is fixedly connected to the main shaft (5) below the fixing box (19), and the liquid guide tube (16) is communicated with the cavity (18), a plurality of liquid flow holes (17) are provided on the liquid guide tube (16) at equal intervals, the main shaft (5) is located inside the fixing box (19) and is separately provided with a communication port (20), an inclined connecting pipe (21) is fixedly passed through the bracket (3), the upper end of the connecting pipe (21) is fixedly connected with a feeding box (22), a feeding cavity (23) is provided at the bottom of the feeding box (22), and a water inlet trough (24) is provided on the top of the feeding box (22) and is communicated with the feeding cavity (23).

2. A method for controlling cracks in a desalination plant tank according to claim 1, characterized in that: The feeding box (22) is provided with liquid storage cavities (25) on both sides of the water inlet trough (24). Two liquid injection ports (26) are provided on the top of the feeding box (22) and are respectively communicated with the two liquid storage cavities (25). A connecting groove (27) is provided at the bottom of each of the liquid storage cavities (25) and is communicated with the feeding cavity (23). The outer walls on both sides of the feeding box (22) are provided with cylindrical control grooves (28) and are respectively communicated with the two connecting grooves (27). A liquid transport block (29) is sealed and rotatably connected in each of the control grooves (28). The groove walls on both sides of the water inlet trough (24) are rotatably connected to a connecting shaft (30). A plurality of rotating plates (31) are fixedly connected to the connecting shaft (30). The two ends of the connecting shaft (30) respectively extend into the control grooves (28) on both sides and are coaxially fixed with the liquid transport block (29).

3. A method for controlling cracks in a desalination plant tank according to claim 2, characterized in that: A slide plate (32) is slidably connected in each of the control grooves (28), a threaded shaft (33) is rotatably connected to the slide plate (32), a threaded groove (34) is provided on the liquid transport block (29), the threaded shaft (33) and the threaded groove (34) on the liquid transport block (29) are rotatably connected by threads, and each of the liquid transport blocks (29) is provided with two liquid transport grooves (35), a piston block (36) is sealed and slidably connected in each of the liquid transport grooves (35), one end of the same side of the two piston blocks (36) is fixedly connected to the slide plate (32), and a control button (37) is coaxially fixed to one end of the threaded shaft (33) located outside the control groove (28).

4. A method for controlling cracks in a desalination plant tank according to claim 3, characterized in that: A scraper (38) is fixed to the plurality of stirring rods (6) on the side of the mixing drum (1) away from the material conveying pipe (11), and the scraper (38) is in contact with the wall of the mixing drum (1).

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