Concrete pipe pressure curing device and method

Abstract

The application provides a concrete pipe pressure maintaining device and method, which comprises a plurality of annular water belts, a plurality of annular air bags, a multi-fiber covering layer, a water injection box, a water pump and an air pump. The annular water belts are provided in plurality. The annular air bags are also provided in plurality, have the same size as the annular water belts and are staggered along the axial direction with the annular water belts to form a cylindrical structure with intervals. The multi-fiber covering layer covers the outside of the cylindrical structure composed of the annular water belts and the annular air bags. The water injection box is arranged at the top of the cylindrical structure and located in the interval between the annular water belts and the annular air bags. Part of the structure of the multi-fiber covering layer extends into the water injection box, and the water injection box is connected with the annular water belt through a control valve. The water pump is communicated with the annular water belt and used for filling water into the annular water belt. The air pump is communicated with the annular air bag and used for filling air into the annular air bag. The device can meet the requirements of different pipe diameters and different maintenance stages.

Description

Technical Field

[0001] This application relates to the field of pipeline maintenance technology, for example to a concrete pipeline pressurization maintenance device and method. Background Technology

[0002] Currently, concrete pipes require thorough moist curing after molding to ensure concrete strength development, reduce shrinkage cracking, and improve durability. Curing of the inner walls of concrete pipes often involves spraying, sprinkling water, or covering with wet geotextiles or burlap sacks. These methods suffer from poor moisture retention, rapid water evaporation, and uneven moisture distribution, especially for long-distance, large-diameter concrete pipes where the central area tends to dry out, making it difficult to create a stable and uniform moist curing environment. Furthermore, the limited adhesion between the moist covering and the pipe's inner wall prevents the formation of an effective pressurized moisturizing system, hindering the full hydration reaction within the concrete. Existing curing devices are mostly fixed structures, with poor compatibility with pipes of different diameters and lengths, prone to displacement and movement within the pipe, affecting curing effectiveness. In addition, traditional curing methods have low automation, requiring frequent manual water replenishment and inspection, resulting in high labor intensity and difficulty in precisely controlling curing parameters, leading to inconsistent curing quality and low efficiency, failing to meet the demands of modern industrialized and standardized concrete pipe production.

[0003] Therefore, improving the convenience of concrete pipe maintenance, enhancing maintenance quality, reducing maintenance difficulty, and decreasing the workload of maintenance personnel have become urgent technical problems to be solved by those skilled in the art.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a concrete pipe pressurization curing device and method to improve curing quality, reduce curing difficulty, and decrease the workload of curing personnel.

[0007] In some embodiments, a concrete pipe pressurization and curing device includes: an annular water hose, an annular air bladder, a multi-fiber covering layer, a water injection box, a water pump, and an air pump. Multiple annular water hoses are provided; multiple annular air bladders are provided, with the same size as the annular water hoses, and are staggered along the axial direction to form a spaced cylindrical structure; the multi-fiber covering layer covers the outside of the cylindrical structure formed by the annular water hoses and annular air bladders; the water injection box is disposed at the top of the cylindrical structure and located within the gap between the annular water hoses and annular air bladders, a portion of the multi-fiber covering layer extends into the water injection box, and the water injection box is connected to the annular water hose via a control valve; the water pump is connected to the annular water hose for filling the annular water hose with water; the air pump is connected to the annular air bladders for inflating the annular air bladders with air.

[0008] Optionally, the multi-fiber covering layer is made of a blend of polyester and cotton fibers, and the outer side of the multi-fiber covering layer is provided with anti-slip protrusions to enhance the fit with the inner wall of the concrete pipe.

[0009] Optionally, a water level sensor is installed inside the water injection box. The water level sensor is electrically connected to the controller, which is electrically connected to the control valve and the water pump, respectively, to control the opening and closing of the control valve and the start and stop of the water pump according to the real-time water level in the water injection box.

[0010] Optionally, a first pressure sensor is provided inside the annular water belt. The first pressure sensor is electrically connected to the controller, and the controller is electrically connected to the water pump. It is used to adjust the output power of the water pump according to the real-time pressure inside the annular water belt so that the pressure inside the annular water belt is maintained within a preset pressure range.

[0011] Optionally, a second pressure sensor is provided inside the annular airbag. The second pressure sensor is electrically connected to the controller, and the controller is electrically connected to the air pump. It is used to adjust the output power of the air pump according to the real-time pressure inside the annular airbag so that the pressure inside the annular airbag is maintained within a preset pressure range.

[0012] Optionally, the bottom of the annular airbag is provided with an opening, and a flow regulating valve is provided at the opening. The flow regulating valve is electrically connected to the controller and is used to regulate the outflow speed of the airflow inside the annular airbag, thereby slowing down the downward flow of moisture in the multi-fiber covering layer.

[0013] Optionally, a protrusion is provided on the multi-fiber covering layer at a position corresponding to the water injection box. The protrusion extends into the water injection box and draws water from the water injection box into the multi-fiber covering layer through capillary action.

[0014] Optionally, the multi-fiber covering layer is fixedly connected to the annular water hose and the annular airbag.

[0015] In some embodiments, a method for pressurizing and curing concrete pipes, employing the aforementioned concrete pipe pressurizing and curing device, includes: Place the concrete pipe pressurization and curing device into the concrete pipe to be cured, start the air pump, and inflate the annular airbag until the pressure inside the annular airbag reaches the preset pressure, so that the multi-fiber covering layer adheres tightly to the inner wall of the concrete pipe. Start the water pump to fill the ring-shaped water belt with water, and at the same time open the control valve to allow the water in the ring-shaped water belt to flow into the water injection box. Set the time, and ensure that the water in the water injection box overflows and wets the multi-fiber covering layer within the set time. When the set time is reached, the controller closes the control valve. Turn off the water pump once the pressure inside the annular water hose reaches the preset pressure. The water level in the water injection box is detected in real time by a water level sensor, and the pressure in the annular water belt and annular air bladder is detected in real time by a first pressure sensor and a second pressure sensor, respectively. Based on the detected parameters, the controller automatically controls the operation of the water pump, air pump, control valve and flow regulating valve to maintain the humidity and pressure required for maintenance. Once the preset curing time has been reached, all equipment is turned off, the moisture in the annular water hose and the gas in the annular airbag are drained, and the concrete pipe pressurization curing device is removed from the concrete pipe to complete the curing process.

[0016] Optionally, the water pump is started to fill the annular water belt with water, and the control valve is opened simultaneously to allow water from the annular water belt to flow into the water injection box. A set time is set to ensure that water overflows from the water injection box and wets the multi-fiber covering layer within the set time. After the set time is reached, the controller closes the control valve. The system also includes: The airflow speed is regulated by the opening at the bottom of the annular airbag and the flow regulating valve, which slows down the downward flow of moisture in the multi-fiber covering layer while maintaining air circulation inside the pipe.

[0017] The concrete pipeline pressurization curing device and method provided in this disclosure can achieve the following technical effects: The annular water hose and annular airbags are the same size and arranged in an alternating pattern, forming a cylindrical structure with gaps. This structure allows for a tight fit between the device and the inner wall of the pipe after the annular airbags are inflated, while the water hoses provide uniform water supply and humidification. Together, they form a stable pressurized humidification system. A multi-fiber covering layer covers the outside of the cylindrical structure, absorbing moisture and evenly conducting it to the inner wall of the pipe, forming a continuous and uniform humidification layer. This reduces moisture evaporation and loss, ensuring uniform curing of all areas of the pipe's inner wall. The water injection box is located in the gap between the annular water hose and the airbags, with part of the multi-fiber covering layer extending into it, enabling continuous water replenishment. A control valve connected to the annular water hose allows for flexible control of the water replenishment rhythm, preventing the multi-fiber covering layer from becoming too dry or too wet. The water pump is connected to the annular water hose, and the air pump is connected to the annular airbags, allowing for independent control of the water hose's water filling and the airbag's inflation. The pressure of the water hose and airbags can be flexibly adjusted according to maintenance needs, adapting to different pipe diameters and different maintenance stages.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is an exploded schematic diagram of a concrete pipe pressurization and curing device provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of a concrete pipe pressurization and curing device provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of a combination of an annular water hose and an annular airbag provided in an embodiment of this disclosure; Figure 4 This is a side view of a concrete pipe pressurization and curing device provided in an embodiment of this disclosure; Figure 5 This is a cross-sectional view of an annular water hose provided in an embodiment of this disclosure; Figure 6 This is a cross-sectional view of an annular airbag provided in an embodiment of this disclosure; Figure 7 This is a schematic diagram of a control method for a concrete pipe pressurization and curing device provided in an embodiment of this disclosure.

[0020] Figure label: 100. Annular water hose; 101. First pressure sensor; 102. Connecting rod; 200. Annular airbag; 201. Second pressure sensor; 202. Opening; 203. Flow regulating valve; 300. Multi-fiber covering layer; 301. Protrusion; 400. Water injection box; 401. Control valve; 402. Water level sensor; 500. Water pump; 600. Air pump; 700. Controller. Detailed Implementation

[0021] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0022] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0023] Unless otherwise stated, the term "multiple" means two or more.

[0024] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0025] Combination Figure 1-6 As shown in the figure, this disclosure provides a concrete pipe pressurization and curing device, including: annular water hose 100, annular airbag 200, multi-fiber covering layer 300, water injection box 400, water pump 500 and air pump 600. Multiple annular water hoses 100 are provided; multiple annular airbags 200 are provided, and are the same size as the annular water hoses 100, and are staggered with the annular water hoses 100 along the axial direction to form a cylindrical structure with intervals; a multi-fiber covering layer 300 covers the outside of the cylindrical structure composed of the annular water hoses 100 and the annular airbags 200; a water injection box 400 is provided at the top of the cylindrical structure (the top refers to the upper area inside the cylindrical structure when the central axis of the cylindrical structure is placed horizontally), and is located in the interval between the annular water hoses 100 and the annular airbags 200. A part of the multi-fiber covering layer 300 extends into the water injection box 400, and the water injection box 400 is connected to the annular water hoses 100 through a control valve 401; a water pump 500 is connected to the annular water hoses 100 and is used to fill the annular water hoses 100 with water; an air pump 600 is connected to the annular airbags 200 and is used to inflate the annular airbags 200 with air.

[0026] The concrete pipe pressurization curing device provided in this embodiment forms a stable cylindrical structure through the staggered arrangement of annular water hoses 100 and annular air bladders 200, and achieves uniform wetting of the inner wall of the concrete pipe through a multi-fiber covering layer 300. After the annular air bladders 200 are inflated, they apply uniform pressure to the inner wall of the pipe, ensuring a tight fit of the covering layer, effectively solving the problems of poor moisture retention and uneven wetting in traditional curing methods. The cooperation between the water injection box 400 and the control valve 401, as well as the setting of the water pump 500 and the air pump 600, allows water and pressure to be introduced and maintained, improving the convenience and quality of curing, reducing manual intervention, and providing a stable and efficient curing environment for concrete pipes.

[0027] Understandably, the annular water hose 100 is a water-fillable, ring-shaped flexible container made of waterproof material, used to store and transport the moisture required for maintenance. Multiple annular water hoses 100 are arranged along the axial direction of the device.

[0028] The annular airbag 200 is an inflatable, annular, flexible container made of high-strength, flexible material. It is used to expand after inflation, thereby applying radial pressure to the device and making it fit tightly against the inner wall of the concrete pipe.

[0029] The water injection box 400 is a container for temporarily storing water and is located on top of the circular structure. The water injection box 400 receives water from the annular water strip 100 and transfers the water to the multi-fiber covering layer 300 through contact, ensuring that the covering layer remains continuously moist.

[0030] The control valve 401 is a mechanical device used to control the on / off state or flow rate of fluid. In this embodiment, it connects the annular water belt 100 and the water injection box 400 to control the process of water flowing from the annular water belt 100 into the water injection box 400. Its specific model is not limited, and its structure is a structure well known to those skilled in the art, and will not be described in detail here.

[0031] The water pump 500 is a mechanical device used to lift or transport liquids. In this embodiment, it is connected to the annular water hose 100 and is used to draw external water into the annular water hose 100 to realize the water filling operation of the water hose. The specific model is not limited, and its structure is a structure well known to those skilled in the art, and will not be described in detail here.

[0032] The air pump 600 is a mechanical device used to lift or transport gas. In this embodiment, it is connected to the annular air bag 200 and is used to fill the annular air bag 200 with gas to realize the expansion operation of the annular air bag 200. Its specific model is not limited, and its structure is a structure well known to those skilled in the art, and will not be described in detail here.

[0033] Optionally, the multi-fiber covering layer 300 is made of a blend of polyester and cotton fibers, and its outer side is provided with anti-slip protrusions to enhance its adhesion to the inner wall of the concrete pipe. This blend of polyester and cotton fibers effectively combines the abrasion resistance of polyester fibers with the moisture absorption and retention of cotton fibers, making the multi-fiber covering layer 300 less prone to wear during long-term use. It also efficiently absorbs and evenly releases moisture, ensuring continuous and adequate moist curing of the concrete pipe. Furthermore, the anti-slip protrusions on the outer side of the multi-fiber covering layer 300 increase its friction with the inner wall of the concrete pipe. When the annular airbag 200 inflates, it allows the multi-fiber covering layer 300 to adhere more tightly and stably to the inner wall of the pipe, effectively preventing the device from sliding or shifting within the pipe. This ensures the uniformity and stability of the curing process, improving the quality and efficiency of concrete pipe curing.

[0034] Understandably, polyester fiber, as a synthetic fiber, possesses characteristics such as high strength, wear resistance, resistance to deformation, and quick drying, providing the necessary structural stability and durability for the multi-fiber covering layer 300. Cotton fiber, a natural fiber, has good hygroscopicity, softness, and water retention capacity. By blending these two fibers, the multi-fiber covering layer 300 can maintain sufficient mechanical strength while improving its water absorption and retention properties, ensuring a continuous and uniform supply of moisture to the inner wall of the concrete pipe during the curing process.

[0035] Optionally, the anti-slip protrusions can be dot-shaped, strip-shaped, grid-shaped, or irregularly shaped structures. Their main function is to increase the coefficient of friction and contact area between the multi-fiber covering layer 300 and the inner wall of the concrete pipe. When the annular airbag 200 inflates, causing the multi-fiber covering layer 300 to adhere tightly to the inner wall of the pipe, the anti-slip protrusions provide additional gripping force, effectively preventing the multi-fiber covering layer 300 from sliding or shifting within the pipe, thereby ensuring the positioning stability of the curing device within the pipe and the uniformity of curing contact. The anti-slip protrusions can be achieved by adding wear-resistant materials such as rubber or silicone.

[0036] Optionally, a water level sensor 402 is installed inside the water injection box 400. The water level sensor 402 is electrically connected to the controller 700, which is also electrically connected to the control valve 401 and the water pump 500. The controller 700 controls the opening and closing of the control valve 401 and the start and stop of the water pump 500 based on the real-time water level in the water injection box 400. Thus, when the water level sensor 402 detects that the water level in the water injection box 400 is lower than a preset lower limit, the controller 700 receives this signal and issues an instruction according to its internal program to start the water pump 500 to fill the annular water belt 100 with water. Simultaneously, the control valve 401 is opened, allowing water from the annular water belt 100 to flow into the water injection box 400, thereby achieving automatic water replenishment. When the water level reaches a preset upper limit or the normal operating range, the controller 700 will correspondingly stop the water pump 500 and close the control valve 401 to prevent overflow from the water injection box 400. This method effectively solves the problems of inaccurate and unstable water level management in the water injection box 400 in traditional maintenance methods. It avoids the drying and interruption of maintenance of the multi-fiber covering layer 300 due to excessively low water levels, as well as the waste of water resources and environmental pollution caused by excessively high water levels. By precisely maintaining an appropriate water level in the water injection box 400, it ensures that the multi-fiber covering layer 300 can continuously and evenly obtain moisture, thereby improving the maintenance quality and efficiency of concrete pipes, reducing the frequency of manual inspection and intervention, and realizing the intelligent and automated maintenance process.

[0037] Optionally, the water level sensor 402 can be an ultrasonic sensor, which calculates the water level height by measuring the time it takes for ultrasonic waves to reflect back from the liquid surface. The water level sensor 402 converts the detected real-time water level data into an electrical signal and transmits it to the controller 700.

[0038] Understandably, the controller 700, as the core control unit of the entire system, consists of a microprocessor, memory, and input / output interfaces. It is responsible for receiving signals from the water level sensor 402 and processing and judging them according to preset control logic. The control valve 401 is an actuator located at the connection between the annular water hose 100 and the water injection box 400, used to control the flow of water. This control valve 401 can be a solenoid valve, which quickly opens or closes the water flow channel by energizing or de-energizing a solenoid coil; it can also be an electric ball valve or an electric butterfly valve, which uses a motor to drive the valve to rotate for precise flow regulation or on / off control.

[0039] Optionally, a first pressure sensor 101 is installed inside the annular water hose 100. The first pressure sensor 101 is electrically connected to a controller 700, which is in turn electrically connected to a water pump 500. The controller 700 adjusts the output power of the water pump 500 based on the real-time pressure within the annular water hose 100, maintaining the pressure within the annular water hose 100 within a preset pressure range. This preset pressure range is an ideal pressure interval determined based on the curing requirements of the concrete pipe and the safe operating conditions of the device. Through this closed-loop control mechanism, the controller 700 can continuously monitor and dynamically adjust the output of the water pump 500, ensuring that the pressure within the annular water hose 100 is always maintained between the preset upper and lower limits. This guarantees sufficient curing pressure and avoids damage to the pipe or device caused by excessive pressure.

[0040] Optionally, the first pressure sensor 101 is a device capable of converting the fluid pressure inside the annular water hose 100 into an electrical signal. A piezoresistive, piezoelectric, or capacitive pressure sensor can be selected. The first pressure sensor 101 can be integrated into the wall of the annular water hose 100, or connected to the interior of the annular water hose 100 via a connecting pipe, to ensure that it can directly sense pressure changes within the water hose.

[0041] Understandably, when the controller 700 detects that the real-time pressure within the annular water hose 100 deviates from the preset pressure range, it will adjust the output power of the water pump 500 accordingly. For example, if the real-time pressure is lower than the preset range, the controller 700 will increase the output power of the water pump 500 to provide a greater flow rate and pressure; if the real-time pressure is higher than the preset range, the controller 700 will reduce the output power of the water pump 500 to reduce the flow rate and pressure.

[0042] Optionally, a second pressure sensor 201 is installed inside the annular airbag 200. The second pressure sensor 201 is electrically connected to the controller 700, which is in turn electrically connected to the air pump 600. The controller 700 adjusts the output power of the air pump 600 based on the real-time pressure inside the annular airbag 200, maintaining the pressure within the annular airbag 200 within a preset pressure range. In this way, the second pressure sensor 201 can monitor pressure changes within the annular airbag 200 in real time and feed the data back to the controller 700. The controller 700 precisely adjusts the output power of the air pump 600 according to the preset pressure range, thereby ensuring that the pressure inside the annular airbag 200 is always maintained within the optimal operating range. This effectively avoids the risk of uneven curing results or device damage caused by pressure fluctuations, ensures stable adhesion between the multi-fiber covering layer 300 and the inner wall of the concrete pipe, and improves the curing quality of the concrete pipe and the reliability of the device operation.

[0043] Understandably, the second pressure sensor 201 is a device for real-time monitoring of the gas pressure inside the annular airbag 200. It can be a piezoresistive pressure sensor based on the piezoresistive effect, a capacitive pressure sensor based on capacitance change, or a strain gauge pressure sensor based on the strain effect, etc. The second pressure sensor 201 is configured to withstand the operating pressure range inside the annular airbag 200 and to convert the detected pressure signal into an electrical signal output to the controller 700.

[0044] Optionally, the annular airbag 200 has an opening 202 at its bottom, and a flow regulating valve 203 is installed at the opening 202. The flow regulating valve 203 is electrically connected to the controller 700 and is used to regulate the outflow speed of the airflow inside the annular airbag 200, thereby slowing down the downward flow of moisture in the multi-fiber covering layer 300. Thus, by providing an opening 202 at the bottom of the annular airbag 200 and configuring the flow regulating valve 203, the outflow speed of the gas inside the annular airbag 200 can be controlled as needed during the curing process. On the one hand, the supporting pressure of the annular airbag 200 on the multi-fiber covering layer 300 can be finely adjusted. On the other hand, and more importantly, the exhaust direction of the opening 202 is basically along the tangent of the annular airbag 200. Therefore, as the airflow continues to exit, it is blocked by the multi-fiber covering layer 300, forming an annular airflow inside the cylindrical structure that flows in the opposite direction to the water flow. Part of this annular airflow enters the multi-fiber covering layer 300 and flows in the opposite direction to the water flow inside, effectively slowing down the rapid downward flow and accumulation of moisture within the multi-fiber covering layer 300 due to gravity. This helps maintain the uniformity of moisture distribution within the multi-fiber covering layer 300, preventing the bottom of the pipe from drying out due to excessive moisture loss, thus ensuring continuous and uniform moist curing of the entire inner wall of the concrete pipe, and improving the stability and durability of the curing effect.

[0045] Understandably, the opening 202 can be a simple circular hole or an array of multiple small holes. It is positioned in the region near the lowest point of the annular airbag 200 to facilitate gas discharge.

[0046] The flow control valve 203 precisely controls the amount and speed of gas discharged from the annular airbag 200. By adjusting the opening of the flow control valve 203, the rate of gas discharge can be controlled, thereby affecting the expansion or contraction of the annular airbag 200 and its pressure on the multifiber covering layer 300. More importantly, it can be used to regulate airflow within the pipe, thus affecting the evaporation and downward flow rate of moisture within the multifiber covering layer 300. The flow control valve 203 can be a manually adjustable knob valve, ball valve, butterfly valve, or an electrically or pneumatically controlled proportional valve. For example, a simple knob valve can be used, with the valve opening changed manually by rotation to regulate the gas flow; or a solenoid valve can be used, with the opening automatically adjusted by receiving a signal from the controller 700. Gas is discharged through the opening 202, slowing the downward flow of moisture within the multifiber covering layer 300. When the gas inside the annular airbag 200 is discharged through the bottom opening 202 and the flow regulating valve 203, a weak airflow can be generated. Alternatively, by adjusting the pressure of the annular airbag 200, the adhesion between the multi-fiber covering layer 300 and the inner wall of the pipe can be indirectly affected, thus influencing the gravitational flow of water. Discharging the gas reduces the local pressure of the annular airbag 200 on the multi-fiber covering layer 300 and, by creating a certain airflow at the bottom of the pipe, slows down the rapid downward penetration and accumulation of water due to gravity, thereby promoting the uniform distribution of water within the multi-fiber covering layer 300 and prolonging its residence time throughout the covering layer.

[0047] Optionally, a protrusion 301 is provided on the multi-fiber covering layer 300 at a position corresponding to the water injection box 400. The protrusion 301 extends into the water injection box 400, drawing water from the water injection box 400 into the multi-fiber covering layer 300 through capillary action. Thus, by providing the protrusion 301 on the multi-fiber covering layer 300 corresponding to the water injection box 400 and extending it into the water injection box 400, the effective contact area between the multi-fiber covering layer 300 and the water in the water injection box 400 can be increased. Given the inherent capillary action characteristics of the multi-fiber covering layer 300 material, capillary forces can be fully utilized to efficiently and quickly draw water from the water injection box 400 into the multi-fiber covering layer 300. This solution, by actively guiding and enhancing capillary action, ensures that water can diffuse more evenly and rapidly throughout the multi-fiber covering layer 300, thereby avoiding the problems of localized dryness or uneven wetting. It not only improves the overall wetting efficiency and uniformity of the multi-fiber coating layer 300, but also provides a more stable and continuous humidity environment for concrete pipes, thereby optimizing the curing effect of concrete and helping to improve the strength and durability of concrete.

[0048] It is understood that the protrusion 301 refers to one or more outwardly protruding structures intentionally formed in the area where the multi-fiber covering layer 300 contacts or is adjacent to the water injection box 400. Its function is to increase the contact area between the multi-fiber covering layer 300 and the water in the water injection box 400, and to provide an efficient channel for water absorption. The protrusion 301 can be formed by locally thickening, folding, curling, or sewing the multi-fiber covering layer 300 material itself in a specific area, or it can be constructed by attaching more absorbent fiber bundles, sponge-like materials, or porous structures to the surface of the multi-fiber covering layer 300. Its shape can be designed as strips, blocks, columns, or irregular shapes to adapt to the structure of the water injection box 400 and the overall layout of the multi-fiber covering layer 300.

[0049] Optionally, the multi-fiber covering layer 300 is fixedly connected to the annular water hose 100 and the annular airbag 200. This establishes a stable physical connection between the water injection box 400 and the multi-fiber covering layer 300, effectively preventing relative displacement that may occur during device operation or maintenance. This ensures that the protrusions 301 on the multi-fiber covering layer 300 are continuously and stably submerged in the water of the water injection box 400, thereby guaranteeing the continuity and efficiency of capillary action. Moisture can be evenly and continuously drawn in and distributed to all parts of the multi-fiber covering layer 300, improving the uniformity and stability of the curing humidity. Simultaneously, this enhances the structural integrity and reliability of the entire concrete pipe pressurization curing device, reduces the risk of failure due to loose or detached components, extends the service life of the device, and ultimately improves the quality and efficiency of concrete pipe curing.

[0050] It is understandable that the water injection box 400 being fixedly connected within the multi-fiber covering layer 300 means that the outer edge of the water injection box 400 can be designed with flanges or connecting rings, which are then securely sewn to the inner side of the multi-fiber covering layer 300. Alternatively, an adhesive bonding technique can be used, employing an industrial-grade adhesive with good waterproof performance and bonding strength to bond the outer surface of the water injection box 400 to the corresponding area of ​​the multi-fiber covering layer 300.

[0051] Optionally, the multi-fiber covering layer 300 is fixedly connected to the annular water hose 100 and the annular airbag 200. This establishes a stable fixed connection between the multi-fiber covering layer 300, the annular water hose 100, and the annular airbag 200, effectively preventing relative displacement, wrinkling, or detachment of the multi-fiber covering layer 300 during device inflation, water filling, or movement. This ensures that the multi-fiber covering layer 300 always adheres tightly to the inner wall of the concrete pipe, thereby guaranteeing uniform pressure transmission and effective moisture penetration during curing. Simultaneously, the fixed connection enhances the overall structural stability of the device, reduces the risk of damage to the multi-fiber covering layer 300 due to friction or tension, extends the service life of the device, and improves the reliability and efficiency of the curing process.

[0052] Optionally, the annular water hose 100 and the annular airbag 200 are connected by a connecting assembly, which includes a connecting rod. Each end of the connecting rod is fixedly connected to a strap or rope. The straps or ropes at both ends of the connecting rod are fixedly connected to the corresponding annular water hose 100 or annular airbag 200 by binding. Thus, after the annular water hose 100 and annular airbag 200 have expanded, the rigid support of the connecting rod ensures that their relative positions are maintained, thereby enhancing the overall rigidity and stability of the cylindrical structure. This effectively limits the relative displacement and deformation that may occur between the annular water hose 100 and annular airbag 200 during water and air inflation, ensuring that they always maintain a precise staggered arrangement. This not only avoids the problem of uneven adhesion between the multi-fiber covering layer 300 and the inner wall of the concrete pipe due to structural instability, but also allows the device to more stably maintain its preset geometry when subjected to internal pressure and external extrusion. Thus, the multi-fiber covering layer 300 can contact the inner wall of the pipe evenly, ensuring the efficiency of water transfer and the uniformity and reliability of the curing effect, thereby improving the curing quality of concrete pipes.

[0053] Combination Figure 7 As shown in the embodiments of this disclosure, a method for pressurizing and curing concrete pipes is also provided, employing the aforementioned concrete pipe pressurizing and curing device, comprising: S01, the concrete pipe pressurization and curing device is placed into the concrete pipe to be cured, the air pump is started, and air is injected into the annular air bladder until the pressure inside the annular air bladder reaches the preset pressure, so that the multi-fiber covering layer adheres tightly to the inner wall of the concrete pipe; the radial pressure generated by the expansion of the air bladder ensures that the device forms a stable fit with pipes of different diameters, effectively solving the technical limitations of the traditional method where the covering layer has limited adhesion to the pipe wall and is prone to displacement, laying the foundation for subsequent uniform wetting.

[0054] S02, start the water pump to fill the annular water belt with water, and at the same time open the control valve to allow the water in the annular water belt to flow into the water injection box. Set the time, and ensure that the water in the water injection box overflows and wets the multi-fiber covering layer within the set time. When the set time is reached, the controller closes the control valve. By utilizing the direct contact between the water injection box and the multi-fiber covering layer, combined with the natural permeability of water, it is ensured that water is evenly diffused along the covering layer, effectively avoiding the dryness caused by rapid evaporation in the middle area of ​​the pipeline, and forming a stable humid environment.

[0055] S03, shut off the water pump when the pressure inside the annular water hose reaches the preset pressure; S04: The water level in the water injection box is monitored in real time by a water level sensor, and the pressure in the annular water hose and annular air bladder is monitored in real time by a first pressure sensor and a second pressure sensor, respectively. Based on the detected parameters, the controller automatically controls the operation of the water pump, air pump, control valve, and flow regulating valve to maintain the humidity and pressure environment required for maintenance. This closed-loop control mechanism enables precise regulation of maintenance parameters, replacing the traditional frequent manual water replenishment and inspection operations, reducing labor intensity and improving the consistency of maintenance quality.

[0056] S05, after the preset curing time is reached, all equipment is shut down, the water in the annular water hose and the gas in the annular airbag are discharged, and the concrete pipe pressurization curing device is removed from the concrete pipe, completing the curing process. By combining the inflation and pressurization of the annular airbag with the water injection and wetting of the annular water hose in a specific sequence, and introducing a multi-sensor closed-loop control system, uniform wetting of the inner wall of the concrete pipe and stable pressure maintenance are achieved. This effectively solves the technical problems of rapid water evaporation, uneven wetting, and excessive manual intervention in traditional curing, improving the quality and efficiency of curing.

[0057] Optionally, the water pump is started to fill the annular water belt with water, and the control valve is opened simultaneously to allow water from the annular water belt to flow into the water injection box. A set time is set to ensure that water overflows from the water injection box and wets the multi-fiber covering layer within the set time. After the set time is reached, the controller closes the control valve. The system also includes: The airflow speed is regulated by the opening at the bottom of the annular airbag and the flow control valve, slowing the downward flow of moisture within the multi-fiber covering layer while maintaining air circulation inside the pipe. This allows for precise adjustment of the airflow speed after the water pump is started to fill the annular water belt and allow water to flow into the water injection box, thus wetting the multi-fiber covering layer. This effectively slows the downward flow of moisture within the multi-fiber covering layer, preventing excessive moisture loss to the bottom and promoting uniform moisture distribution throughout the covering layer, ensuring continuous and even moist curing of the concrete pipe's inner wall. Simultaneously, maintaining air circulation inside the pipe effectively removes hot and humid air, preventing excessively high local humidity or poor air circulation, providing a more stable and uniform environment for concrete curing, and further improving curing quality and efficiency.

[0058] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0059] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0060] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0061] The methods and products disclosed in the embodiments herein (including but not limited to devices and equipment) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0062] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A concrete pipe pressurization and curing device, characterized in that, include: Multiple annular water hoses (100) are provided; Multiple annular airbags (200) are provided, and they are the same size as the annular water belt (100), and are arranged alternately with the annular water belt (100) along the axial direction to form a cylindrical structure with intervals. A multi-fiber covering layer (300) covers the outside of the cylindrical structure composed of the annular water strip (100) and the annular airbag (200); Water injection box (400) is located on the top of the cylindrical structure and in the gap between the annular water belt (100) and the annular airbag (200). Part of the structure of the multi-fiber covering layer (300) extends into the water injection box (400), and the water injection box (400) is connected to the annular water belt (100) through the control valve (401). A water pump (500) is connected to an annular water hose (100) and is used to fill the annular water hose (100) with water; An air pump (600) is connected to an annular airbag (200) and is used to inflate the annular airbag (200).

2. The concrete pipe pressurization and curing device according to claim 1, characterized in that, The multi-fiber covering layer (300) is made of a blend of polyester and cotton fibers, and the outer side of the multi-fiber covering layer (300) is provided with anti-slip protrusions to enhance the fit with the inner wall of the concrete pipe.

3. The concrete pipe pressurization and curing device according to claim 1, characterized in that, The water level sensor (402) is installed in the water injection box (400). The water level sensor (402) is electrically connected to the controller (700). The controller (700) is electrically connected to the control valve (401) and the water pump (500) respectively. It is used to control the opening and closing of the control valve (401) and the start and stop of the water pump (500) according to the real-time water level in the water injection box (400).

4. The concrete pipe pressurization and curing device according to claim 1, characterized in that, A first pressure sensor (101) is provided inside the annular water hose (100). The first pressure sensor (101) is electrically connected to the controller (700), and the controller (700) is electrically connected to the water pump (500). The controller is used to adjust the output power of the water pump (500) according to the real-time pressure inside the annular water hose (100) so that the pressure inside the annular water hose (100) is maintained within a preset pressure range.

5. The concrete pipeline pressurization and curing device according to claim 1, characterized in that, The annular airbag (200) is equipped with a second pressure sensor (201), which is electrically connected to the controller (700). The controller (700) is electrically connected to the air pump (600) and is used to adjust the output power of the air pump (600) according to the real-time pressure inside the annular airbag (200) so that the pressure inside the annular airbag (200) is maintained within a preset pressure range.

6. The concrete pipe pressurization and curing device according to claim 1, characterized in that, The bottom of the annular airbag (200) is provided with an opening (202), and a flow regulating valve (203) is provided at the opening (202). The flow regulating valve (203) is electrically connected to the controller (700) and is used to regulate the outflow speed of the airflow in the annular airbag (200) and slow down the downward flow of moisture in the multi-fiber covering layer (300).

7. The concrete pipe pressurization and curing device according to any one of claims 1 to 6, characterized in that, A protrusion (301) is provided on the multifiber covering layer (300) at a position corresponding to the water injection box (400). The protrusion (301) extends into the water injection box (400) and draws water from the water injection box (400) into the multifiber covering layer (300) through capillary action.

8. The concrete pipeline pressurization and curing device according to claim 7, characterized in that, The water injection box (400) is fixedly connected inside the multi-fiber covering layer (300).

9. A method for pressurizing and curing concrete pipes, comprising the concrete pipe pressurizing and curing device according to claim 8, characterized in that, Also includes: Place the concrete pipe pressurization and curing device into the concrete pipe to be cured, start the air pump, and inflate the annular airbag until the pressure inside the annular airbag reaches the preset pressure, so that the multi-fiber covering layer adheres tightly to the inner wall of the concrete pipe. Start the water pump to fill the ring-shaped water belt with water, and at the same time open the control valve to allow the water in the ring-shaped water belt to flow into the water injection box. Set the time, and ensure that the water in the water injection box overflows and wets the multi-fiber covering layer within the set time. When the set time is reached, the controller closes the control valve. Turn off the water pump once the pressure inside the annular water hose reaches the preset pressure. The water level in the water injection box is detected in real time by a water level sensor, and the pressure in the annular water belt and annular air bladder is detected in real time by a first pressure sensor and a second pressure sensor, respectively. Based on the detected parameters, the controller automatically controls the operation of the water pump, air pump, control valve and flow regulating valve to maintain the humidity and pressure required for maintenance. Once the preset curing time has been reached, all equipment is turned off, the moisture in the annular water hose and the gas in the annular airbag are drained, and the concrete pipe pressurization curing device is removed from the concrete pipe to complete the curing process.

10. The method for pressurizing and curing concrete pipes according to claim 9, characterized in that, The water pump is started to fill the annular water belt with water, and the control valve is opened simultaneously to allow water from the annular water belt to flow into the water injection box. A set time is set, and within that time, water in the injection box is ensured to overflow and wet the multi-fiber covering layer. After the set time is reached, the controller closes the control valve. The system also includes: The airflow speed is regulated by the opening at the bottom of the annular airbag and the flow regulating valve, which slows down the downward flow of moisture in the multi-fiber covering layer while maintaining air circulation inside the pipe.

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