Concrete dam maintenance device and maintenance method

Abstract

This invention belongs to the field of concrete curing technology and discloses a concrete dam curing device and method. The concrete dam curing device includes a moisture-retaining cylinder, a water injection component, a heat-insulating component, and a pressure regulating component. The moisture-retaining cylinder can be installed on the concrete dam, and its inner cavity is filled with moisture-retaining water that can contact the surface of the concrete dam. The water injection component is connected to the moisture-retaining cylinder and is configured to inject moisture-retaining water into the cylinder. The heat-insulating component is located on the side of the moisture-retaining cylinder away from the concrete dam and has an adjustable-volume heat-insulating cavity filled with heat-insulating gas. The pressure regulating component is connected to the heat-insulating component and is configured to inflate or expel the heat-insulating gas from the heat-insulating cavity. This concrete dam curing device can flexibly adjust its moisture-retaining capacity according to the humidity of the construction environment and its heat-insulating capacity according to the temperature of the construction environment, effectively avoiding cracks and resource waste, improving the quality of concrete curing while reducing curing costs.

Description

Technical Field

[0001] This invention relates to the field of concrete curing technology, and in particular to a concrete dam curing device and curing method. Background Technology

[0002] In water conservancy and hydropower projects in high-altitude and cold regions, concrete gravity dams and arch dams are often used as the main water-retaining structures, undertaking comprehensive functions such as flood control, water storage, power generation, irrigation, and urban and rural water supply. However, these regions are characterized by multiple extreme environmental factors, including extremely low temperatures, significant diurnal temperature variations, strong winds, dryness, strong ultraviolet radiation, and frequent freeze-thaw cycles. These factors make the concrete dam body prone to various cracks during construction and operation and maintenance, and the surface curing layer of the dam body is prone to rapid aging and failure, significantly reducing the overall structural durability of the dam.

[0003] In the prior art, patent CN115094902 discloses an integrated thermal insulation and moisture retention device for concrete dam surfaces. This device consists of a moisture retention structure and an air-filled membrane insulation structure. The moisture retention structure adheres to the concrete surface to alleviate surface water loss, shrinkage, and cracking. The air-filled membrane is filled with insulating gas to achieve dam insulation, making it suitable for high-altitude and cold-climate conditions. However, during concrete curing, ambient temperature and humidity fluctuate in real time, but the air volume and water replenishment volume of this device are fixed, resulting in a constant moisture retention and insulation capacity. It cannot be dynamically adjusted according to the external environment, which can easily lead to insufficient insulation causing temperature difference cracks, excessive moisture retention causing water waste, or excessive insulation causing air waste. This affects the quality of concrete curing and increases curing costs.

[0004] Therefore, there is an urgent need for a concrete dam curing device and method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a concrete dam curing device and method that can flexibly adjust the moisture retention capacity according to the humidity of the construction environment and the heat preservation capacity according to the temperature of the construction environment, effectively avoiding the occurrence of cracks, resource waste and other phenomena, while improving the quality of concrete curing and reducing the curing cost.

[0006] To achieve this objective, the present invention adopts the following technical solution: Firstly, a concrete dam curing device is provided, comprising: The moisturizing cylinder and the water injection device are used to inject moisturizing water into the concrete dam. The moisturizing cylinder can be installed on the concrete dam. The inner cavity of the moisturizing cylinder is filled with moisturizing water that can contact the surface of the concrete dam. The water injection device is connected to the moisturizing cylinder and is configured to inject moisturizing water into the moisturizing cylinder. The insulation component and the air pressure regulating component are provided. The insulation component is located on the side of the insulation cylinder away from the concrete dam. The insulation component has an adjustable volume insulation cavity, which is filled with insulation gas. The air pressure regulating component is connected to the insulation component and is configured to fill or discharge the insulation gas in the insulation cavity.

[0007] Optionally, the insulation component is provided with an air injection port and an air exhaust port, both of which are connected to the insulation cavity. The air pressure regulating component includes an air injection section and an air exhaust section. The air injection section is located at the air injection port and is used to inject insulation gas into the air injection port. The air exhaust section is located at the air exhaust port and is used to discharge the insulation gas in the insulation cavity through the air exhaust port.

[0008] Optionally, the insulation component is equipped with a pressure display element, which is configured to display the pressure inside the insulation cavity.

[0009] Optionally, the pressure display includes an indicator and a display. The display has multiple display areas with different colors and different pressure values. The indicator is movably mounted on the display and can be moved to any one of the multiple display areas.

[0010] Optionally, the concrete dam curing device also includes a flow guiding mesh, which is set on the side of the curing cylinder that contacts the concrete dam. The flow guiding mesh has multiple grids arranged in a matrix.

[0011] Optionally, the water injection component includes a water supply pipe that can be detachably connected to the moisture-retaining cylinder, and the concrete dam curing device also includes a sealing component that can be detachably connected to the moisture-retaining cylinder, with a water injection port provided on the cylinder wall of the moisture-retaining cylinder. When the water supply pipe is separated from the humidifying cylinder, the sealing component is connected to the humidifying cylinder, and the sealing component blocks the water inlet; when the water supply pipe is connected to the humidifying cylinder, the sealing component is separated from the humidifying cylinder, the water inlet is unsealed and connected to the water supply pipe, and the humidifying water can enter the humidifying cylinder from the water supply pipe through the water inlet.

[0012] Optionally, the insulation component includes an insulation cylinder and an ultraviolet protection section. One end of the insulation cylinder is connected to the moisture-retaining cylinder, and the other end is detachably connected to the ultraviolet protection section. The insulation cavity is located in at least a portion of the inner cavity of the insulation cylinder, and the ultraviolet protection section is configured to block ultraviolet rays.

[0013] Optionally, the insulation component includes insulation filler, which is filled into the insulation cavity to block the heat conduction between the concrete dam and the external environment. The insulation filler has multiple pores, and insulation gas is filled into the pores.

[0014] Secondly, a method for curing concrete dams is provided, applicable to the concrete dam curing device of the first aspect, comprising the following steps: S1. Determine the air humidity and temperature at the maintenance site; S2. Determine the preset volume V of the moisturizing water required for maintenance according to the formula V=V0×S×(1-H / 100), and determine the preset air pressure P in the insulation cavity according to the formula P=P0+k×(T0-T). Where V0 is the volume of moisturizing water required to cure a unit area of ​​concrete when the air humidity is 100%; S is the cross-sectional area of ​​the moisturizing cylinder; H is the air humidity at the curing site; T is the temperature at the curing site; T0 is the average air temperature of the construction area; k is the temperature correction coefficient; and P0 is the atmospheric pressure of the construction area when the air temperature is T0. S3. Use the water injection device to inject a preset volume V of moisturizing water into the moisturizing cylinder, and use the air pressure regulating device to fill the heat preservation chamber with heat preservation gas until the air pressure in the heat preservation chamber reaches the preset air pressure P.

[0015] Optionally, the following steps may be included after step S3: S4. Determine if the temperature of the construction environment has changed. If so, adjust the air pressure in the insulation chamber using the air pressure regulator. If not, continue curing the concrete dam. When the temperature of the construction environment changes, it is determined whether the temperature of the construction environment has decreased. If so, the insulation gas is injected into the insulation cavity using the air pressure regulator; if not, some of the insulation gas in the insulation cavity is discharged using the air pressure regulator.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a concrete dam curing device. The moisturizing water inside the moisturizing cylinder comes into contact with the concrete dam, ensuring the surface humidity of the dam and achieving a moisturizing effect. This effectively alleviates the problem of water loss and shrinkage cracking of the concrete dam surface in cold environments. The insulating gas inside the insulation component blocks heat conduction between the concrete dam and the external environment, achieving a heat insulation effect, making it suitable for high-altitude and cold regions. During the concrete curing process, if the ambient humidity decreases, the moisturizing water can be replenished to the moisturizing cylinder in a timely manner using the water injection component. This allows the volume of moisturizing water in the cylinder to flexibly adapt to the current humidity of the construction environment, effectively preventing cracking and water waste, thus improving the quality of concrete curing while reducing curing costs. The volume of the insulation chamber is adjustable. When enhanced insulation of the concrete dam is required, air can be added to the chamber using a pressure regulator to increase its volume, expanding the space that impedes the exchange of hot and cold air and improving concrete curing quality. Conversely, when the ambient temperature rises and a stronger insulation effect on the concrete dam is not needed, the insulation gas can be extracted from the chamber using the pressure regulator, reducing its volume and the space that impedes the exchange of hot and cold air, effectively avoiding waste of gas resources and reducing concrete curing costs. Compared with existing technologies, the concrete dam curing device provided by this invention can flexibly adjust the volume of moisturizing water in the moisturizing cylinder according to the humidity of the construction environment and flexibly adjust the volume of insulating gas in the insulation chamber according to the temperature of the construction environment. This allows for flexible adjustment of the moisturizing and insulation effects of the concrete dam, effectively preventing cracks and resource waste, and improving concrete curing quality while reducing curing costs.

[0017] This invention provides a method for curing concrete dams. By using the concrete dam curing device provided by this invention, the curing humidity and temperature of the concrete dam can be flexibly adjusted according to specific construction conditions. It is well-suited for high-altitude and cold regions, effectively preventing surface cracks in the concrete and improving the curing quality of the concrete dam. Before injecting water into the moisture-retaining cylinder, the water volume can be determined according to a formula and the ambient humidity. This simple determination process significantly simplifies the adjustment of the moisture retention effect based on the ambient humidity, making operation convenient and quick, and contributing to improved construction efficiency. Before inflating the insulation cavity, the air pressure can be determined according to a formula and the ambient temperature. This simple determination process significantly simplifies the adjustment of the insulation effect based on the ambient temperature, making operation convenient and quick, and contributing to improved construction efficiency. Attached Figure Description

[0018] Figure 1 This is an exploded view of the concrete dam curing device provided by the present invention. Figure 2 A flowchart of the concrete dam maintenance method provided by the present invention.

[0019] In the picture: 10. Concrete dams; 100. Humidifying cylinder; 110. Flow guide mesh; 120. Water inlet; 200. Insulation component; 210. Insulation cavity; 220. Insulation cylinder; 230. Ultraviolet protection section; 240. Buckle; 250. Insulation filler; 310. Injection section; 320. Exhaust section; 400. Pressure display unit. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0024] Example 1 like Figure 1As shown in the figure, this embodiment provides a concrete dam curing device that can flexibly adjust its moisture retention capacity according to the humidity of the construction environment and its heat preservation capacity according to the temperature of the construction environment, effectively avoiding the occurrence of cracks, resource waste and other phenomena, improving the quality of concrete curing while reducing the curing cost.

[0025] See Figure 1 The concrete dam curing device includes a moisture-retaining cylinder 100, a water injection component, an insulation component 200, and a pressure regulating component. The moisture-retaining cylinder 100 can be installed on the concrete dam 10. The inner cavity of the moisture-retaining cylinder 100 is filled with moisture-retaining water that can contact the surface of the concrete dam 10. The water injection component is connected to the moisture-retaining cylinder 100 and is configured to inject moisture-retaining water into the moisture-retaining cylinder 100. The insulation component 200 is located on the side of the moisture-retaining cylinder 100 away from the concrete dam 10. The insulation component 200 is provided with an adjustable-volume insulation cavity 210, which is filled with insulation gas. The pressure regulating component is connected to the insulation component 200 and is configured to inflate or expel the insulation gas in the insulation cavity 210.

[0026] The concrete dam curing device provided in this embodiment ensures that the moisturizing water in the moisturizing cylinder 100 is in contact with the concrete dam 10, maintaining the surface humidity of the concrete dam 10 and achieving a moisturizing effect. This effectively alleviates the problem of water loss, shrinkage, and cracking of the concrete dam 10 surface in cold environments. The insulating gas in the insulation component 200 blocks heat conduction between the concrete dam 10 and the external environment, achieving a heat insulation effect and fully adapting to high-altitude and cold regions. During the concrete curing process, if the ambient humidity decreases, moisturizing water can be replenished to the moisturizing cylinder 100 in a timely manner using the water injection component. This allows the volume of moisturizing water in the moisturizing cylinder 100 to flexibly adapt to the humidity of the current construction environment, effectively preventing cracks and water waste. This improves the quality of concrete curing while reducing curing costs. The volume of the insulation cavity 210 is adjustable. When it is necessary to enhance the insulation effect of the insulation component 200 on the concrete dam 10, the air pressure regulating component can be used to inflate the insulation cavity 210 to increase its volume, expand the space that the insulation gas can block the exchange of hot and cold air, and improve the quality of concrete curing. When the ambient temperature rises and a strong insulation effect on the concrete dam 10 is not required, the insulation gas in the insulation cavity 210 can be extracted using the air pressure regulating component to reduce its volume, reduce the space that the insulation gas can block the exchange of hot and cold air, effectively avoid waste of gas resources, and reduce concrete curing costs. Compared with the prior art, the concrete dam curing device provided in this embodiment can flexibly adjust the volume of moisturizing water in the moisturizing cylinder 100 according to the humidity of the construction environment, and flexibly adjust the volume of heat-insulating gas in the heat-insulating cavity 210 according to the temperature of the construction environment, so as to realize the flexible adjustment of the moisturizing effect and heat-insulating effect of the concrete dam 10, effectively avoid the occurrence of cracks, waste of resources, etc., and reduce the curing cost while improving the quality of concrete curing.

[0027] For example, the humidifying cylinder 100 is made of a mixture of polyethylene and carboxymethyl cellulose. Polyethylene is a non-polar hydrophobic polymer with excellent water barrier properties, which can form a dense, impermeable protective layer to effectively prevent humidifying water from leaking out of the humidifying cylinder 100; carboxymethyl cellulose is an anionic water-soluble cellulose derivative that can quickly swell and thicken in water, and has the functions of binding, suspending, and film forming.

[0028] For example, carbon dioxide is used as the insulating gas. Carbon dioxide gas has the characteristics of low thermal conductivity and strong absorption of infrared thermal radiation, which can simultaneously block heat conduction and heat radiation to achieve the purpose of heat preservation; moreover, at room temperature, carbon dioxide gas is chemically stable, non-flammable, and non-corrosive, making it safe to use and cost-effective.

[0029] Optionally, see Figure 1 The insulation component 200 is equipped with an air injection port and an air exhaust port, both of which are connected to the insulation cavity 210. The air pressure regulating component includes an air injection section 310 and an air exhaust section 320. The air injection section 310 is located at the air injection port and is used to inject insulation gas into the air injection port. The air exhaust section 320 is located at the air exhaust port and is used to discharge the insulation gas in the insulation cavity 210 through the air exhaust port. This arrangement allows the air injection and air exhaust operations of the air pressure regulating component to operate independently, with the air intake and exhaust airflows in the insulation cavity 210 flowing independently, significantly improving the controllability and precision of the insulation gas volume regulation within the insulation cavity 210.

[0030] Specifically, when the ambient temperature rises, the concrete dam 10 does not require high insulation. In this case, the exhaust vent 320 can be controlled to discharge some of the insulating gas from the insulation chamber 210. This reduces the amount of insulating gas in the insulation chamber 210, decreases its volume, and reduces the space obstructing the exchange of hot and cold air, thus reducing the insulation capacity of the insulation component 200 and effectively minimizing gas waste. Conversely, when the ambient temperature drops, enhanced insulation of the concrete dam 10 is required. In this case, the injection vent 310 can be controlled to fill the insulation chamber 210 with insulating gas. This increases the amount of insulating gas in the insulation chamber 210, increases its volume, and increases the space obstructing the exchange of hot and cold air, thus enhancing the insulation capacity of the insulation component 200. Therefore, this concrete dam curing device can fully adapt to the diurnal temperature variations in high-altitude and cold regions, ensuring the curing quality of the concrete dam 10.

[0031] In this embodiment, the air injection unit 310 uses a manual air pump, and the air release unit 320 uses an air release valve. Both the air injection and air release processes are operated manually. When the ambient temperature rises, the operator can open the air release valve to release the insulating gas in the insulation chamber 210; when the ambient temperature drops, the operator can use the manual air pump to inject air into the insulation chamber 210. This design makes the overall structure of the concrete dam curing device relatively simple, eliminating the need for high-precision instruments, preventing instrument failure in high-altitude and cold environments, reducing the difficulty and cost of curing the concrete dam 10, and ensuring that operators can quickly learn to operate it.

[0032] When no venting is required, the vent valve remains closed.

[0033] In other embodiments, the concrete dam curing device also includes a control unit, which is electrically connected to both the air injection unit 310 and the exhaust unit 320, and is configured to control the opening and closing of the air injection unit 310 and the exhaust unit 320. When the ambient temperature rises, the control unit controls the exhaust unit 320 to open automatically; when the ambient temperature drops, the control unit controls the air injection unit 310 to open automatically. This configuration eliminates the need for real-time manual monitoring of the concrete dam 10 curing process, significantly improving the automation level of the concrete dam 10 curing and reducing labor costs.

[0034] For example, the air injection section 310 uses an air pump, and the air exhaust section 320 uses an air extraction pump.

[0035] Optionally, see Figure 1 The insulation component 200 is equipped with a pressure display component 400, which is configured to display the air pressure inside the insulation cavity 210. This configuration allows personnel to intuitively understand the real-time air pressure inside the insulation cavity 210 through the pressure display component 400, facilitating real-time adjustment of the volume of insulating gas within the insulation cavity 210. This ensures that the insulation component 200 can flexibly adjust its insulation effect on the concrete dam 10 according to the surrounding ambient temperature.

[0036] Specifically, the insulation effect of the insulation component 200 on the concrete dam 10 varies depending on the ambient temperature during construction. In the concrete dam curing device provided in this embodiment, the insulation effect of the insulation component 200 on the concrete dam 10 is mainly controlled by the volume of the insulation cavity 210, which is the space that blocks the exchange of hot and cold air by the insulating gas. When the temperature remains constant, the volume of the insulation cavity 210 is directly proportional to the air pressure in the insulation cavity 210. Therefore, by understanding the air pressure inside the insulation cavity 210, the current insulation effect of the insulation component 200 on the concrete dam 10 can be determined.

[0037] When the ambient temperature decreases during construction, it is necessary to enhance the insulation effect of the concrete dam 10. At this time, insulating gas is injected into the insulation cavity 210 using an air pressure regulator. The increase in the amount of insulating gas in the insulation cavity 210 increases its volume and air pressure. This increases the space that the insulating gas can block the exchange of hot and cold air, thus enhancing the insulation capacity of the insulation component 200. Conversely, when the ambient temperature rises, it is necessary to weaken the insulation effect of the concrete dam 10. At this time, the insulating gas in the insulation cavity 210 is discharged using an air pressure regulator. This reduces the amount of insulating gas in the insulation cavity 210, decreases its volume and air pressure. This reduces the space that the insulating gas can block the exchange of hot and cold air, thus weakening the insulation capacity of the insulation component 200.

[0038] In this embodiment, see Figure 1 The air pressure display 400 includes an indicator and a display. The display has multiple display areas, each with a different color and corresponding to a different air pressure value. The indicator is movably mounted on the display and can be moved to any of the display areas. This design allows operators to intuitively and quickly understand the air pressure inside the insulation cavity 210 by observing the color of the display area where the indicator is located. Even when manually operating the air pressure regulator, the accuracy and convenience of adjusting the air pressure in the insulation cavity 210 are ensured.

[0039] Specifically, the display section has scales, and the indicator section uses pointers.

[0040] For example, the atmospheric pressure of the construction environment of the concrete dam 10 cured by this concrete dam curing device is in the range of 0.020 MPa to 0.023 MPa. The display unit has three display areas, colored yellow, green, and red respectively. The air pressure value corresponding to the yellow display area is in the range of 0.01 MPa to 0.02 MPa, the green display area is in the range of 0.02 MPa to 0.04 MPa, and the red display area is in the range of 0.04 MPa to 0.06 MPa. The air injection unit 310 of the air pressure regulating component uses a manual air pump with a range in the range of 0 MPa to 0.1 MPa.

[0041] In other embodiments, the pressure display 400 includes a display screen and a pressure detection unit. The display screen is connected to the pressure detection unit, which is configured to detect the pressure inside the insulation cavity 210. The display screen is configured to display the pressure value detected by the pressure detection unit. This configuration allows the pressure display 400 to accurately display the pressure inside the insulation cavity 210, improving the accuracy of pressure adjustment for the insulation cavity 210 by the operator.

[0042] For example, the air pressure detection unit uses an air pressure sensor.

[0043] In some embodiments, the concrete dam curing device further includes a control unit connected to a pressure detection unit and a pressure regulator, configured to control the opening and closing of the pressure regulator based on the pressure measured by the pressure detection unit. During the inflation and deflation of the pressure regulator, the pressure detection unit can detect the pressure inside the insulation cavity 210 in real time. Once the pressure value displayed on the screen reaches the required pressure value, the control unit automatically closes the pressure regulator, improving the accuracy of pressure regulation in the insulation cavity 210.

[0044] Optionally, see Figure 1 The concrete dam curing device also includes a flow-guiding mesh 110, which is positioned on the side of the moisture-retaining cylinder 100 that contacts the concrete dam 10. The flow-guiding mesh 110 has multiple grids arranged in a matrix. This arrangement allows the opening of the moisture-retaining cylinder 100 to be divided into multiple evenly distributed areas by the grids, each containing moisture-retaining water. This achieves a uniform distribution of moisture-retaining water on the surface of the concrete dam 10, effectively preventing localized water accumulation and drying, ensuring uniform moisture retention of the concrete dam 10, and improving the curing quality of the concrete dam 10.

[0045] For example, see Figure 1 The cross-sectional shape and cross-sectional area of ​​the flow guide mesh 110 are the same as those of the humidifying cylinder 100.

[0046] Optionally, see Figure 1 The water injection component includes a water supply pipe that can be detachably connected to the moisture-retaining cylinder 100. The concrete dam curing device also includes a sealing component that can be detachably connected to the moisture-retaining cylinder 100. A water injection port 120 is provided on the cylinder wall of the moisture-retaining cylinder 100. When the water supply pipe is separated from the moisture-retaining cylinder 100, the sealing component is connected to the moisture-retaining cylinder 100 and the sealing component seals the water injection port 120. When the water supply pipe is connected to the moisture-retaining cylinder 100, the sealing component is separated from the moisture-retaining cylinder 100, the water injection port 120 is unsealed and connected to the water supply pipe, and the moisture-retaining water can enter the moisture-retaining cylinder 100 from the water supply pipe through the water injection port 120. When curing work is required immediately after concrete pouring, the sealing device can be separated from the moisture-retaining cylinder 100 to unlock the water injection port 120, allowing the water supply pipe to connect to the moisture-retaining cylinder 100. The water supply pipe can then inject moisture-retaining water into the moisture-retaining cylinder 100 through the water injection port 120. During concrete curing, the water supply pipe is separated from the moisture-retaining cylinder 100, and the water injection port 120 is sealed using the sealing device to prevent moisture-retaining water from seeping out of the moisture-retaining cylinder 100, thus improving the stability of moisture retention for the concrete dam 10. Moreover, separating the water supply pipe from the moisture-retaining cylinder 100 during curing effectively prevents workers from accidentally touching the water supply pipe, improving the safety of the construction site.

[0047] Specifically, the pipe wall and sealing components of the water supply pipe are threadedly connected to the side wall of the water inlet 120. The threaded connection not only allows for the separable connection of the water supply pipe and sealing components to the moisture retention cylinder 100, but also ensures the sealing of the connection point when the water supply pipe and sealing components are connected to the moisture retention cylinder 100, effectively preventing the moisture retention water inside the moisture retention cylinder 100 from seeping out and improving the stability of moisture retention for the concrete dam 10.

[0048] For example, the sealing element is made of silicone. Silicone material itself is hydrophobic and water-repellent, and has a good barrier effect against liquid water, which can maintain the sealing effect during the sealing process for a long time.

[0049] In this embodiment, see Figure 1 The system is equipped with multiple water inlets 120, water delivery pipes, and sealing components. The multiple water inlets 120 are spaced apart, and each water delivery pipe corresponds to one of the multiple water inlets 120, as do the multiple sealing components. This arrangement increases the amount of water injected into the inner cavity of the moisture-retaining cylinder 100 per unit time, significantly improving the water injection rate and increasing the efficiency of concrete curing operations.

[0050] For example, see Figure 1 The cross-sectional shape of the humidifying cylinder 100 is rectangular, and multiple water inlets 120 are arranged at intervals along the long side of the humidifying cylinder 100, with a distance of 1m between two adjacent water inlets 120.

[0051] In this embodiment, a one-way valve is provided at the water inlet 120. The one-way valve is configured to restrict the flow direction of the moisturizing water so that the moisturizing water in the moisturizing cylinder 100 will not flow out of the water inlet 120 when the water supply pipe is just separated from the moisturizing cylinder 100 and the sealing component is not sealed, thus ensuring the moisturizing effect on the concrete dam 10.

[0052] In this embodiment, the water injection component also includes a water storage section, which is connected to a water supply pipe and is used to store moisturizing water. When water needs to be injected into the moisturizing cylinder 100, the moisturizing water stored in the water storage section can be injected into the moisturizing cylinder 100 through the water supply pipe, making the operation convenient and quick.

[0053] For example, the water storage section includes, but is not limited to, water tanks and reservoirs.

[0054] Optionally, see Figure 1The insulation component 200 includes an insulation cylinder 220 and an ultraviolet (UV) protection section 230. One end of the insulation cylinder 220 is connected to the moisture-retaining cylinder 100, and the other end is detachably connected to the UV protection section 230. An insulation cavity 210 is located within at least a portion of the inner cavity of the insulation cylinder 220. The UV protection section 230 is configured to block UV rays. This arrangement provides sufficient space within the inner cavity of the insulation cylinder 220 for the deformation of the insulation cavity 210 and effectively guides the direction of deformation, ensuring that the insulation effect of the insulation component 200 can be flexibly adjusted according to temperature. The UV protection section 230 encloses the insulation cylinder 220, preventing debris from the surrounding environment from entering and affecting the insulation effect of the insulation component 200. Simultaneously, the UV protection section 230 effectively blocks UV rays, reducing the heat absorbed by the insulation component 200 and improving the insulation effect on the concrete dam 10. The detachable connection between the UV protection unit 230 and the insulation cylinder 220 can greatly simplify the subsequent maintenance and replacement of the UV protection unit 230 and improve construction efficiency.

[0055] See Figure 1 In the orientation of the cavity, the insulation cylinder 220 extends along the thickness direction of the concrete. When the volume of the insulation cavity 210 changes, under the constraint of the cylinder wall of the insulation cylinder 220, the insulation cavity 210 can only deform along the thickness direction of the concrete, thereby improving the insulation effect of the insulation component 200 on the concrete dam 10 along the thickness direction of the concrete.

[0056] For example, the insulation cylinder 220 and the moisture-retaining cylinder 100 are sealed together by hot melt adhesive. The concrete dam curing device provided in this embodiment adopts a modular design, which significantly improves the convenience of its installation and disassembly on the construction site and increases construction efficiency.

[0057] In some embodiments, see Figure 1 The insulation component 200 also includes a protective film disposed in the inner cavity of the humidification cylinder 100, which surrounds and forms an insulation cavity 210. On the one hand, the protective film can surround and form a sealed insulation cavity 210 to prevent leakage of insulation gas; on the other hand, the protective film is flexible and can be deformed to adapt to changes in the volume of the insulation cavity 210.

[0058] For example, the protective film is made of high-strength polyvinyl chloride.

[0059] In some embodiments, the ultraviolet (UV) protection section 230 includes an aluminum alloy plate and a silver fluorocarbon coating applied to the surface of the aluminum alloy plate. The aluminum alloy plate serves as a supporting structure, enhancing the rigidity of the UV protection section 230 and preventing damage in high-temperature and high-altitude areas. The silver fluorocarbon coating exhibits excellent weather resistance, anti-aging properties, and resistance to acid, alkali, oil, and gas corrosion, extending the service life of the insulation component 200 in cold and high-altitude regions. It also has high reflectivity for infrared thermal radiation, effectively blocking UV rays, reducing the heat absorbed by the insulation component 200, and improving the insulation effect on the concrete dam 10.

[0060] The concrete dam curing device provided in this embodiment is made of materials commonly used in the field, which helps to reduce its production and manufacturing costs.

[0061] In this embodiment, see Figure 1 The ultraviolet protection section 230 is provided with a buckle 240, and the heat preservation cylinder 220 is provided with a slot. The buckle 240 can be inserted into the slot to realize the detachable connection between the ultraviolet protection section 230 and the heat preservation cylinder 220.

[0062] For example, the snap 240 is made of spring steel.

[0063] See Figure 1 There are four clips 240, which are located at the four corners of the aluminum alloy plate. This arrangement allows the UV protection part 230 and the heat insulation cylinder 220 to be evenly stressed at multiple points, effectively preventing the UV protection part 230 from being overturned or displaced under strong winds.

[0064] For example, a Velcro strap is also provided between the UV protection section 230 and the insulation cylinder 220. The Velcro strap not only enables a detachable connection between the UV protection section 230 and the insulation cylinder 220, but also cooperates with the buckle 240 to enhance the reliability of the connection.

[0065] In other embodiments, the concrete dam curing device also includes fasteners that pass through the ultraviolet protection section 230 and are threadedly connected to the insulation cylinder 220 to achieve a detachable connection between the ultraviolet protection section 230 and the insulation cylinder 220.

[0066] For example, the fasteners are bolts or screws.

[0067] Optionally, see Figure 1The insulation component 200 includes an insulation filler 250, which fills the insulation cavity 210 to block heat conduction between the concrete dam 10 and the external environment. The insulation filler 250 has multiple pores, into which insulating gas is filled. This design allows the insulation filler 250 to work in conjunction with the insulating gas, significantly enhancing the insulation capacity of the insulation component 200 for the concrete dam 10, effectively preventing surface cracks in the concrete dam 10, and improving the curing quality of the concrete dam 10.

[0068] When the volume of the insulation cavity 210 changes, the heat insulation buffer space of the insulation filler 250 changes accordingly, thereby achieving the purpose of adjusting the insulation effect.

[0069] In this embodiment, the insulation component 200 includes a protective film, which surrounds and forms an insulation cavity 210, and the insulation filler 250 is filled inside the protective film.

[0070] For example, the thermal insulation filler 250 is a phase change insulation cotton made of a mixture of polyester fiber and paraffin. The porous structure of polyester fiber has excellent static thermal insulation performance, and together with the thermal insulation gas, it can synergistically block heat conduction; paraffin absorbs and releases a large amount of latent heat through solid-liquid conversion in the phase change temperature range, which can actively buffer the impact of diurnal and seasonal temperature differences, stabilize the thermal insulation temperature, and reduce heat exchange losses, so that the thermal insulation component 200 can maintain its thermal insulation and temperature regulation function for a long time.

[0071] Optionally, the concrete dam curing device also includes temperature and humidity sensors, both housed in the insulation cylinder 100. The temperature sensor is configured to detect the temperature at the curing site, and the humidity sensor is configured to detect the air humidity at the curing site. The humidity sensor allows the water injection unit to precisely adjust the water injection volume based on the measured humidity, effectively preventing water waste. The temperature sensor allows the air pressure regulating unit to flexibly adjust the volume of the insulation cavity 210 based on the measured temperature, effectively preventing air waste.

[0072] In this embodiment, the concrete dam curing device also includes a control unit, which is connected to a temperature detection device, a humidity detection device, a water injection device, and a pressure regulating device. The control unit is configured to control the opening and closing of the pressure regulating device according to the temperature measured by the temperature detection device, and to control the opening and closing of the water injection device according to the humidity measured by the humidity detection device.

[0073] For example, the temperature detection element uses a temperature sensor, and the humidity detection element uses a humidity sensor.

[0074] Example 2 like Figure 2 As shown, this embodiment provides a method for curing a concrete dam, applicable to the concrete dam curing device of Embodiment 1, including the following steps: S1. Determine the air humidity and temperature at the maintenance site; S2. Determine the preset volume V of the moisturizing water required for maintenance according to the formula V=V0×S×(1-H / 100), and determine the preset air pressure P in the heat preservation cavity 210 according to the formula P=P0+k×(T0-T). Where V0 is the volume of moisturizing water required to cure a unit area of ​​concrete when the air humidity is 100%; S is the cross-sectional area of ​​the moisturizing cylinder 100; H is the air humidity at the curing site; T is the temperature at the curing site; T0 is the average air temperature of the construction area; k is the temperature correction coefficient; and P0 is the atmospheric pressure of the construction area when the air temperature is T0. S3. Use the water injection device to inject a preset volume V of moisturizing water into the moisturizing cylinder 100, and use the air pressure regulating device to fill the heat preservation chamber 210 with heat preservation gas until the air pressure in the heat preservation chamber 210 reaches the preset air pressure P.

[0075] The concrete dam curing method provided in this embodiment, by using the concrete dam curing device of Embodiment 1, allows for flexible adjustment of the curing humidity and temperature of the concrete dam 10 according to specific construction conditions. It is well-suited for high-altitude and cold regions, effectively preventing surface cracks in the concrete and improving the curing quality of the concrete dam 10. Before injecting water into the moisture-retaining cylinder 100, the water volume can be determined according to a formula and the ambient humidity. This simple determination process significantly simplifies the adjustment of the moisture retention effect based on the ambient humidity, making operation convenient and quick, and contributing to improved construction efficiency. Before inflating the insulation cavity 210, the air pressure can be determined according to a formula and the ambient temperature. This simple determination process significantly simplifies the adjustment of the insulation effect based on the ambient temperature, making operation convenient and quick, and contributing to improved construction efficiency.

[0076] When the air humidity is 100%, the maintenance unit area (1m²) 2 The required volume of water for retaining moisture in concrete, V0, can be determined through testing before construction, and its unit is L / m³. 2 During the experiment, factors such as concrete mix proportions and the rate of moisture evaporation from the concrete surface need to be considered. S represents the cross-sectional area of ​​the moisture-retaining cylinder 100, i.e., the area of ​​the concrete dam 10 that can be moisturized by the moisture-retaining cylinder 100, and its unit is m². 2 .

[0077] In high-altitude areas, air humidity is low, generally below 100%. Therefore, the formula V=V0×S×(1-H / 100) can be corrected for V0 by subtracting H / 100. In other words, the higher the air humidity at the construction site, the closer it is to 100%, the smaller the amount of moisturizing water injected into the moisturizing cylinder 100, to avoid excessive water injection leading to water accumulation and sand shedding on the concrete surface. Conversely, the lower the air humidity at the construction site, the greater the difference from 100%, the larger the amount of moisturizing water injected into the moisturizing cylinder 100, which enhances the moisturizing effect and prevents rapid evaporation of moisture from the concrete dam surface 10.

[0078] T0 can be determined by consulting the historical temperature of the construction site, and its unit is °C; when T0 is determined, P0 can be determined by consulting existing data. k is the temperature correction coefficient, which represents the change in air pressure inside the insulation cavity 210 for every 1 °C decrease in the ambient temperature during construction, and its unit is MPa / °C.

[0079] For example, when T0 is 20°C, P0 is in the range of 0.020MPa to 0.023MPa in mild low-altitude areas and in the range of 0.027MPa to 0.030MPa in extremely cold and high-altitude areas.

[0080] For example, k is determined through pre-construction tests and is related to factors such as the expansion characteristics of the insulation cavity 210, the thermal insulation performance of the insulation filler 250, and the altitude of the construction area. Tests show that for ordinary altitude areas with temperatures ranging from -10℃ to 25℃, the value of k is 0.0008 MPa / ℃; for plateau areas with minimum temperatures below -10℃, the value of k is in the range of 0.0005 MPa / ℃ to 0.0007 MPa / ℃; and for extremely cold high-altitude areas with minimum temperatures below -25℃, the value of k is in the range of 0.0009 MPa / ℃ to 0.00012 MPa / ℃.

[0081] According to the formula P=P0+k×(T0-T), when the ambient temperature T is equal to T0, the difference between the preset air pressure P of the insulation cavity 210 and the atmospheric pressure P0 is small; when the ambient temperature T is greater than T0, the preset air pressure P of the insulation cavity 210 is less than the atmospheric pressure P0; when the ambient temperature T is less than T0, the preset air pressure P of the insulation cavity 210 is greater than the atmospheric pressure P0.

[0082] In this embodiment, the following steps are included after step S3: S4. Determine if the temperature of the construction environment has changed. If so, adjust the air pressure of the insulation chamber 210 using the air pressure regulator. If not, continue to cure the concrete dam 10.

[0083] When the temperature of the construction environment changes, it is determined whether the temperature of the construction environment has decreased. If so, the insulation gas is injected into the insulation cavity 210 using the air pressure regulator; if not, part of the insulation gas in the insulation cavity 210 is discharged using the air pressure regulator.

[0084] When the ambient temperature decreases during construction, it is necessary to enhance the insulation effect of the concrete dam 10. At this time, insulating gas is injected into the insulation cavity 210 using an air pressure regulator. The increase in the amount of insulating gas in the insulation cavity 210 increases its volume and air pressure. This increases the space that the insulating gas can block the exchange of hot and cold air, thus enhancing the insulation capacity of the insulation component 200. Conversely, when the ambient temperature rises, it is necessary to weaken the insulation effect of the concrete dam 10. At this time, the insulating gas in the insulation cavity 210 is discharged using an air pressure regulator. This reduces the amount of insulating gas in the insulation cavity 210, decreases its volume and air pressure. This reduces the space that the insulating gas can block the exchange of hot and cold air, thus weakening the insulation capacity of the insulation component 200.

[0085] Specifically, the insulation component 200 is provided with a pressure display component 400. In steps S3 and S4, the pressure inside the insulation cavity 210 is determined by observing the pressure displayed by the pressure display component 400.

[0086] Optionally, the concrete dam curing device also includes a temperature sensor and a humidity sensor. In step S1, the temperature sensor is used to determine the temperature of the curing site, and the humidity sensor is used to determine the air humidity of the curing site.

[0087] Optionally, the water injection component includes a water supply pipe that can be detachably connected to the moisture-retaining cylinder 100, and the concrete dam curing device also includes a sealing component that can be detachably connected to the moisture-retaining cylinder 100, with a water injection port 120 provided on the cylinder wall of the moisture-retaining cylinder 100.

[0088] In this embodiment, step S3, when injecting a preset volume V of moisturizing water into the moisturizing cylinder 100 using the water injection component, specifically includes the following steps: first, separating the sealing component from the moisturizing cylinder 100 to unseal the water injection port 120; then, connecting the water supply pipe to the moisturizing cylinder 100 and inputting moisturizing water into the water supply pipe, with the moisturizing water entering the moisturizing cylinder 100 from the water supply pipe via the water injection port 120; after injecting the preset volume V of moisturizing water, separating the water supply pipe from the moisturizing cylinder 100 and connecting the sealing component to the moisturizing cylinder 100.

[0089] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A concrete dam curing device, characterized in that, include: A moisturizing cylinder (100) and a water injection device, wherein the moisturizing cylinder (100) can be installed on a concrete dam (10), the inner cavity of the moisturizing cylinder (100) is filled with moisturizing water that can contact the surface of the concrete dam (10), and the water injection device is connected to the moisturizing cylinder (100) and is configured to inject moisturizing water into the moisturizing cylinder (100); The insulation component (200) and the pressure regulating component are provided. The insulation component (200) is located on the side of the moisture-retaining cylinder (100) away from the concrete dam (10). The insulation component (200) is provided with an adjustable volume insulation cavity (210). The insulation cavity (210) is filled with insulation gas. The pressure regulating component is connected to the insulation component (200) and is configured to fill the insulation cavity (210) with gas or discharge the insulation gas in the insulation cavity (210).

2. The concrete dam curing device according to claim 1, characterized in that, The insulation component (200) is provided with an air injection port and an air exhaust port. Both the air injection port and the air exhaust port are connected to the insulation cavity (210). The air pressure regulating component includes an air injection part (310) and an air exhaust part (320). The air injection part (310) is located at the air injection port and is used to inject insulation gas into the air injection port. The air exhaust part (320) is located at the air exhaust port and is used to discharge the insulation gas in the insulation cavity (210) through the air exhaust port.

3. The concrete dam curing device according to claim 1, characterized in that, The insulation component (200) is provided with a pressure display component (400), which is configured to display the pressure inside the insulation cavity (210).

4. The concrete dam curing device according to claim 3, characterized in that, The air pressure display (400) includes an indicator and a display. The display has multiple display areas, each with a different color and corresponding to a different air pressure value. The indicator is movably disposed on the display and can be moved to any one of the multiple display areas.

5. The concrete dam curing device according to claim 1, characterized in that, The concrete dam curing device also includes a flow guiding mesh (110), which is disposed on the side of the moisture-retaining cylinder (100) that contacts the concrete dam (10). The flow guiding mesh (110) has multiple grids arranged in a matrix.

6. The concrete dam curing device according to claim 1, characterized in that, The water injection component includes a water supply pipe that can be detachably connected to the moisture-retaining cylinder (100), and the concrete dam curing device also includes a sealing component that can be detachably connected to the moisture-retaining cylinder (100). The moisture-retaining cylinder (100) is provided with a water injection port (120) on its cylinder wall. When the water supply pipe is separated from the moisturizing cylinder (100), the sealing member is connected to the moisturizing cylinder (100), and the sealing member seals the water inlet (120); when the water supply pipe is connected to the moisturizing cylinder (100), the sealing member is separated from the moisturizing cylinder (100), the water inlet (120) is unsealed and connected to the water supply pipe, and moisturizing water can enter the moisturizing cylinder (100) from the water supply pipe through the water inlet (120).

7. The concrete dam curing device according to claim 1, characterized in that, The insulation component (200) includes an insulation cylinder (220) and an ultraviolet protection part (230). One end of the insulation cylinder (220) is connected to the moisture-retaining cylinder (100), and the other end is detachably connected to the ultraviolet protection part (230). The insulation cavity (210) is located in at least a portion of the inner cavity of the insulation cylinder (220), and the ultraviolet protection part (230) is configured to block ultraviolet rays.

8. The concrete dam curing device according to claim 1, characterized in that, The insulation component (200) includes insulation filler (250), which is filled in the insulation cavity (210) to block the heat conduction between the concrete dam (10) and the external environment. The insulation filler (250) has multiple pores, and the insulation gas is filled in the pores.

9. A method for curing concrete dams, characterized in that, An apparatus suitable for use in the curing of concrete dams as described in any one of claims 1-8, comprising the following steps: S1. Determine the air humidity and temperature at the maintenance site; S2. Determine the preset volume V of the moisturizing water required for maintenance according to the formula V=V0×S×(1-H / 100), and determine the preset air pressure P in the heat preservation cavity (210) according to the formula P=P0+k×(T0-T); Wherein, V0 is the volume of moisturizing water required to cure a unit area of ​​concrete when the air humidity is 100%; S is the cross-sectional area of ​​the moisturizing cylinder (100); H is the air humidity at the curing site; T is the temperature at the curing site; T0 is the average air temperature of the construction area; k is the temperature correction coefficient; P0 is the atmospheric pressure of the construction area when the air temperature is T0. S3. Using the water injection component, inject the preset volume V of moisturizing water into the moisturizing cylinder (100), and use the air pressure regulating component to fill the heat preservation chamber (210) with heat preservation gas until the air pressure in the heat preservation chamber (210) reaches the preset air pressure P.

10. The method for curing concrete dams according to claim 9, characterized in that, Step S3 is followed by the following steps: S4. Determine whether the temperature of the construction environment has changed. If so, use the air pressure regulator to adjust the air pressure of the insulation cavity (210). If not, continue to cure the concrete dam (10). When the temperature of the construction environment changes, it is determined whether the temperature of the construction environment decreases. If so, the heat insulation gas is injected into the heat insulation cavity (210) using the air pressure regulator. If not, part of the heat insulation gas in the heat insulation cavity (210) is discharged using the air pressure regulator.

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