Underwater concrete pouring device for simulating large water depth environment

Abstract

The utility model discloses an underwater concrete pouring device for simulating a large water depth environment in the technical field of underwater concrete construction, which comprises a container assembly, a mold assembly arranged in the container assembly, a guide pipe connected to the middle of the top of the container assembly, a support arranged at the top of the container assembly, and a floating ball arranged in the guide pipe. The right side of the top of the container assembly is connected with an air pipe, and the end, away from the container assembly, of the air pipe is provided with a vacuum pump. The container assembly, the guide pipe, the floating ball, the mold assembly, the air pipe, the vacuum pump, the discharging hopper and the lifting rope are arranged in a matched mode, the pressure difference in the underwater pouring process is created in the mode that the vacuum pump sucks negative pressure, and underwater concrete pouring under the actual working condition is conducted by simulating the pressure difference under the large water depth condition. A test basis is provided for selecting a concrete mix proportion test under a real pouring condition, and the optimization of a concrete formula is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater concrete construction, and in particular to an underwater concrete pouring device that simulates a deep water environment. Background Technology

[0002] In the field of underwater concrete pouring technology, especially in projects performed in deep-water environments, we face numerous challenges and requirements. A commonly used traditional pouring method is the tremie method, which involves directly transporting concrete to a designated underwater location via a pipe. This approach effectively reduces direct contact between the concrete and water, thereby minimizing concrete segregation and bleeding.

[0003] The complexity of deep-water environments, especially under high pressure, significantly impacts the compaction and curing process of concrete. Therefore, it is essential to verify the quality of concrete pouring before large-scale construction. Traditional mix proportion tests primarily rely on methods used for land-based concrete, involving molding in the laboratory, curing in water, and conducting compressive strength tests.

[0004] However, in actual construction sites at depths of tens of meters, the water head pressure difference has a significant impact on the performance indicators of concrete. For example, conventional laboratory tests are usually conducted under normal pressure, without considering the effect of water pressure differences on the concrete. Theoretical analysis shows that under high water pressure, air bubbles in the pores of the concrete will rapidly precipitate after entering the water, resulting in better concrete density under conditions that consider water pressure. Furthermore, actual concrete structures are usually located in open water, where the surface water head remains relatively stable despite the increased volume from concrete pouring. Therefore, under simulated pressure differences, the change in the top water head as the concrete surface rises must also be considered. Based on this, we propose an underwater concrete pouring device to simulate deep water environments. Utility Model Content

[0005] To address the aforementioned issues with existing technologies that directly transport concrete to designated underwater locations via pipelines, the complexity of deep-water environments, particularly under high pressure, significantly impacts the compaction and curing process of concrete. This invention provides an underwater concrete pouring device that simulates deep-water environments.

[0006] This utility model provides an underwater concrete pouring device that simulates a deep water environment, and adopts the following technical solution:

[0007] An underwater concrete pouring device simulating a deep water environment includes a container assembly, a mold assembly inside the container assembly, a conduit connected to the middle of the top of the container assembly, a hopper connected to the top of the conduit and positioned above the container assembly, a support mounted on the top of the container assembly, a float inside the conduit and a hoisting rope connected to the top of the float and the inner top wall of the support, a collection hopper mounted on the top of the support and a switch at the bottom of the collection hopper, and an air pipe connected to the right side of the top of the container assembly, with a vacuum pump installed at the end of the air pipe furthest from the container assembly.

[0008] By adopting the above technical solution, the interior of the mold assembly is filled with water, and then pre-mixed concrete material is filled into the aggregate hopper. The switch is turned on, and the concrete falls and enters the interior of the guide tube through the discharge hopper. Under the influence of gravity, the float moves down until the top of the discharge hopper is filled with concrete. Then the switch is turned off, the vacuum pump is started, and the air in the container assembly is extracted by adjusting the valve on the air pipe. When the required pressure is reached, the hoisting rope is cut, and the concrete moves downward through the guide tube and slowly flows into the mold assembly under the action of gravity and pressure difference. At this time, the float floats up to the water surface, and the switch at the bottom of the aggregate hopper is turned on again to continuously replenish the material. By simulating the pressure difference under deep water conditions, underwater concrete pouring under actual working conditions is carried out. This provides experimental basis for selecting concrete mix proportions under actual pouring conditions, helps to optimize the concrete formula, and ensures that the concrete can achieve the expected strength and durability under actual deep water conditions.

[0009] Optionally, the container assembly includes a container body, a top cover is mounted on the top of the container body, and a plurality of container bolts connect the top cover to the container body.

[0010] By adopting the above technical solution and using container bolts, the top cover and the container body can be separated.

[0011] Optionally, the mold assembly includes a mold base plate, which is fixedly installed on the inner bottom wall of the container body. An annular mold is installed on the top of the mold base plate, and a plurality of mold bolts connect the mold base plate and the annular mold.

[0012] By adopting the above technical solution, the mold base plate and the ring mold can be separated by setting the mold bolts, which makes it easier to unload the final set concrete from the mold base plate.

[0013] Optionally, a valve may be provided on the air pipe.

[0014] By adopting the above technical solution, after the concrete has set, the valve is opened to balance the pressure inside and outside the container.

[0015] Optionally, a pressure gauge is installed at the end of the gas tube near the vacuum pump.

[0016] By adopting the above technical solution, the pressure changes inside the container can be easily monitored using a pressure gauge until the predetermined test pressure is reached.

[0017] Optionally, a transparent window is provided on the side of the top cover away from the trachea.

[0018] By adopting the above technical solution, the transparent window allows operators to easily observe the concrete pouring process, ensuring that the concrete is evenly distributed within the mold.

[0019] Optionally, the top of the top cover is provided with a sealing screw hole, and the sealing screw hole is sealed to the conduit.

[0020] By adopting the above technical solution, after the conduit is pulled out from the top of the cover, the sealing cover can be installed by rotating the sealing screw, thereby sealing the sealing screw.

[0021] Optionally, the height space at the bottom of the conduit is greater than the diameter of the float.

[0022] By adopting the above technical solution, it is ensured that after the suspension rope connecting the float is cut, the float can flip out from the gap space.

[0023] In summary, this utility model has at least one of the following beneficial effects:

[0024] By coordinating container components, conduits, floats, mold components, air pipes, vacuum pumps, hoppers, and hoisting ropes, a pressure difference is created during underwater pouring by using a vacuum pump to draw in negative pressure. This simulates the pressure difference under deep water conditions for underwater concrete pouring, providing experimental basis for selecting concrete mix proportions under actual pouring conditions. This helps optimize the concrete formula and ensures that the concrete can achieve the expected strength and durability under actual deep water conditions.

[0025] By setting up a mold assembly inside the container assembly and filling the mold assembly with water, and then pouring concrete into the mold assembly through a sealed screw and a hopper, the water will overflow into the container assembly. By simulating actual water depth and other conditions, these parameters can be adjusted and precisely controlled according to the actual situation, which can help to better understand how different water depth variables affect the construction quality of concrete.

[0026] By conducting comprehensive real-world scenario testing and verification using this device, the uncertainties and risks of on-site construction can be effectively reduced. This pre-verification ensures the feasibility of the construction plan and reduces rework and maintenance that may result from unforeseen changes in on-site conditions. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0029] In the diagram: 1. Collection hopper; 2. Switch; 3. Support; 4. Transparent window; 5. Container assembly; 501. Top cover; 502. Container bolt; 503. Container body; 6. Conduit; 7. Float; 8. Mold assembly; 801. Mold base plate; 802. Mold bolt; 803. Ring mold; 9. Valve; 10. Air pipe; 11. Vacuum pump; 12. Sealing screw; 13. Discharge hopper; 14. Lifting rope. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail below.

[0031] Please refer to the attached diagram in the instruction manual. Figure 1 This utility model provides an embodiment of an underwater concrete pouring device simulating a deep water environment, comprising a container assembly 5, which includes a container body 503. A top cover 501 is mounted on the top of the container body 503, and a plurality of container bolts 502 are threadedly connected between the top cover 501 and the container body 503. The container bolts 502 allow the top cover 501 and the container body 503 to be separated.

[0032] Please refer to the attached diagram in the instruction manual. Figure 1 The container assembly 5 contains a mold assembly 8, which includes a mold base plate 801. The mold base plate 801 is fixedly installed on the inner bottom wall of the container body 503. An annular mold 803 is installed on the top of the mold base plate 801. Several mold bolts 802 are threadedly connected between the mold base plate 801 and the annular mold 803. The mold bolts 802 allow the mold base plate 801 and the annular mold 803 to be separated, thus facilitating the removal of the final-set concrete from the mold base plate 801.

[0033] Please refer to the attached diagram in the instruction manual. Figure 1 A conduit 6 is movably connected to the middle of the top of the container assembly 5. A sealing screw 12 is provided on the top of the top cover 501, and the sealing screw 12 is sealed to the conduit 6. When the conduit 6 is pulled out from the top of the top cover 501, a sealing cap can be installed by rotating the sealing screw 12, thereby sealing the sealing screw 12.

[0034] Please refer to the attached diagram in the instruction manual. Figure 1 A hopper 13 is fixedly connected to the top of the conduit 6, and the hopper 13 is located above the container assembly 5. A support 3 is fixedly installed on the top of the container assembly 5. A float 7 is installed inside the conduit 6, and a suspension rope 14 is fixedly connected to the top of the float 7 and the inner top wall of the support 3. The height space left at the bottom of the conduit 6 is greater than the diameter of the float 7. This ensures that after the suspension rope 14 connecting the float 7 is cut, the float 7 can flip out from the space.

[0035] Please refer to the attached diagram in the instruction manual. Figure 1 A hopper 1 is detachably installed on the top of the support 3, and a switch 2 is installed at the bottom of the hopper 1. An air pipe 10 is fixedly connected to the right side of the top of the container assembly 5, and a valve 9 is installed on the air pipe 10. After the concrete has set, the valve 9 is opened to balance the pressure inside and outside the container body 503.

[0036] Please refer to the attached diagram in the instruction manual. Figure 1 A vacuum pump 11 is installed at the end of the air pipe 10 furthest from the container assembly 5, and a pressure gauge is installed at the end of the air pipe 10 closest to the vacuum pump 11. The pressure gauge allows for convenient monitoring of pressure changes inside the container body 503 until the predetermined test pressure is reached. A transparent window 4 is provided on the side of the top cover 501 furthest from the air pipe 10. The transparent window 4 allows operators to easily observe the concrete pouring process and ensure that the concrete is evenly distributed within the mold.

[0037] Working principle: In use, the annular mold 803 is installed on the top of the mold base plate 801 by the mold bolt 802, and then the top cover 501 is installed on the top of the container body 503 by the container bolt 502. At this time, the annular mold 803 is located inside the container body 503 and is filled with water. The float 7 is connected to the support 3 by the suspension rope 14. The float 7 floats above the water surface in the conduit 6. The switch 2 and valve 9 are in the closed state.

[0038] Then, the pre-mixed concrete material is filled into the aggregate hopper 1, the switch 2 is turned on, the concrete falls and enters the interior of the conduit 6 through the discharge hopper 13. Under the influence of gravity, the float 7 moves down until the top of the discharge hopper 13 is filled with concrete. Then the switch 2 is turned off, the pressure difference is set as needed, the pressure value is set, the vacuum pump 11 is started, and the air in the container body 503 is extracted by adjusting the valve 9 on the air pipe 10 to create a pressure difference environment similar to a large water depth. The pressure change is monitored by the pressure gauge until the predetermined test pressure is reached.

[0039] Once the required pressure is reached, the hoisting rope 14 is cut. Under the action of gravity and pressure difference, the concrete moves downward through the guide pipe 6 and slowly flows into the annular mold 803. At this time, the float 7 floats up to the water surface. At the same time, the switch 2 at the bottom of the aggregate hopper 1 is opened again to continuously replenish the concrete material. During the pouring process, the pouring situation of the concrete is observed through the transparent window 4 to ensure that the concrete is evenly distributed in the annular mold 803.

[0040] By observing that all the water in the annular mold 803 overflows into the container body 503, and that the volume of the space between the annular mold 803 and the container body 503 is equal to the volume inside the annular mold 803, after the concrete fills the annular mold 803, the water in the container body 503 also just submerges the concrete surface. Then, switch 2 is immediately turned off to prevent more concrete from flowing out, and vacuum pump 11 is turned off at the same time, and the pressure inside the container body 503 is balanced to atmospheric pressure.

[0041] At this point, the hopper 13 and the guide tube 6 are pulled out from the top cover 501, and then sealed by rotating the sealing cover and the sealing screw 12. At the same time, the vacuum pump 11 is turned on, and the pressure difference is adjusted to the corresponding simulated water depth pressure to maintain the pressure inside the container body 503 until the concrete is fully set. After the concrete is fully set, the vacuum pump 11 is turned off and the valve 9 is slowly opened to balance the internal and external pressures. When the pressure is completely balanced, the top cover 501 is removed from the top of the container body 503 by the container bolts 502. At the same time, the ring mold 803 is removed from the top of the mold base plate 801 by the mold bolts 802, and the fully set concrete is removed from the mold base plate 801. Then, the specimen is placed in water and cured in a suitable environment until the specified age. Finally, the specimen cured to the specified age is taken out of the water and subjected to necessary physical and chemical performance tests to evaluate its performance parameters after being poured under simulated deep water pressure.

[0042] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An underwater concrete pouring device simulating a deep water environment, comprising a container assembly (5), characterized in that: The container assembly (5) is provided with a mold assembly (8) inside. A conduit (6) is connected to the middle of the top of the container assembly (5). A hopper (13) is connected to the top of the conduit (6) and the hopper (13) is located above the container assembly (5). A support (3) is installed on the top of the container assembly (5). A float (7) is provided inside the conduit (6), and a suspension rope (14) is connected to the top of the float (7) and the inner top wall of the support (3). A collection hopper (1) is installed on the top of the support (3). A switch (2) is provided at the bottom of the collection hopper (1). An air pipe (10) is connected to the right side of the top of the container assembly (5). A vacuum pump (11) is installed at the end of the air pipe (10) away from the container assembly (5).

2. The underwater concrete pouring device simulating a deep water environment according to claim 1, characterized in that: The container assembly (5) includes a container body (503), a top cover (501) is installed on the top of the container body (503), and a plurality of container bolts (502) are threadedly connected between the top cover (501) and the container body (503).

3. The underwater concrete pouring device simulating a deep water environment according to claim 2, characterized in that: The mold assembly (8) includes a mold base plate (801), which is fixedly installed on the inner bottom wall of the container body (503). An annular mold (803) is installed on the top of the mold base plate (801), and a plurality of mold bolts (802) are threadedly connected between the mold base plate (801) and the annular mold (803).

4. The underwater concrete pouring device simulating a deep water environment according to claim 1, characterized in that: A valve (9) is provided on the air pipe (10).

5. The underwater concrete pouring device simulating a deep water environment according to claim 1, characterized in that: A pressure gauge is installed at the end of the air pipe (10) near the vacuum pump (11).

6. The underwater concrete pouring device simulating a deep water environment according to claim 2, characterized in that: A transparent window (4) is provided on the side of the top cover (501) away from the trachea (10).

7. The underwater concrete pouring device simulating a deep water environment according to claim 2, characterized in that: The top of the top cover (501) is provided with a sealing screw (12), and the sealing screw (12) is sealed to the conduit (6).

8. The underwater concrete pouring device simulating a deep water environment according to claim 1, characterized in that: The height space at the bottom of the conduit (6) is greater than the diameter of the float (7).

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