Concrete pipe pile steam sealing maintenance device
The steam-sealed curing device for concrete pipe piles, designed with multi-layer pipe racks and rolling friction plates, solves the capacity and cost problems of small and medium-sized enterprises and achieves efficient and energy-saving steam curing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CONCRETE BUILDING MATERIALS CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-31
AI Technical Summary
The existing pit curing method for concrete pipe piles has problems such as limited production capacity, large land occupation, and high civil engineering costs, making it difficult to meet the production needs of small and medium-sized enterprises.
A steam-sealed curing device for concrete pipe piles is designed, which adopts a multi-layer pipe rack structure, combined with the rolling friction design of the cover plate and the uniform spraying of the steam nozzle, to achieve efficient curing of multi-layer pipe piles, improve space utilization and temperature uniformity.
It increases the amount of maintenance per cycle, reduces heat consumption, shortens the maintenance cycle, improves product quality consistency and production efficiency, and reduces production costs.
Smart Images
Figure CN224575882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete production technology, and in particular to a steam-sealed curing device for concrete pipe piles. Background Technology
[0002] Concrete pipe piles, as an important foundation material, are widely used in the foundation engineering of infrastructure such as buildings, bridges, and ports. Their quality directly affects the safety and stability of the entire structure. Steam curing is a crucial step in the production of concrete pipe piles. Its purpose is to accelerate the hydration reaction of cement through a high-temperature and high-humidity environment, enabling the pipe piles to reach the demolding strength and factory strength in a short time, thereby significantly improving production efficiency and accelerating mold turnover.
[0003] Currently, the industry commonly uses two main steam curing methods: pit curing and steam kiln curing. Steam kiln curing is a continuous curing method where the pipe piles, along with their molds, are placed on a track trolley and pushed into a continuous kiln for segmented curing. This method is highly automated, but requires huge equipment investment, occupies a large area, and has high energy consumption, making it mainly suitable for large-scale pipe pile production enterprises. For many small and medium-sized pipe pile production enterprises, pit curing (or curing pool) remains the mainstream choice. Existing pit curing methods typically involve constructing a large concrete pool underground or semi-underground, with an insulated cover. During curing, the completed and centrifugally molded pipe piles are lifted by crane into the curing pool, and steam is introduced for curing.
[0004] Since only a few pipe piles can typically be placed in a single layer within a curing pool, the production capacity of a single curing pool is very limited. To meet production demands, companies have to build multiple curing pools, which not only occupies a large amount of land but also increases civil engineering costs. Utility Model Content
[0005] The purpose of this invention is to provide a steam-sealed curing device for concrete pipe piles, which can perform layered curing of concrete pipe piles, improve the space utilization of the curing pool and the uniformity of curing.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a steam-sealed curing device for concrete pipe piles, including a curing pool with a curing chamber, steam nozzles are provided on the inner walls on both sides of the curing chamber, a cover plate that slides on the top of the curing pool to seal the curing chamber, and multiple sets of pipe placement assemblies are arranged from bottom to top in the curing chamber, the pipe placement assembly including a pipe placement frame.
[0007] By adopting the above technical solution, multiple pipe racks are stacked from bottom to top in the curing chamber. When in use, the heat-insulating and sealing cover plate on the top of the curing tank is removed. First, the bottom layer of pipe racks is hoisted into the curing tank by a crane. Then, multiple pre-formed pipe piles are placed on the pipe racks. Subsequently, another layer of pipe racks is hoisted into the curing tank and stacked on top of the bottom layer of pipe racks. Pipe piles are hoisted in again. After the hoisting work is completed, the cover plate is put back on the top of the curing tank. Steam is introduced into the curing tank through steam nozzles, which helps to increase the amount of curing per session and the space utilization rate. Moreover, the multi-layer rack design makes the space inside the tank more fully filled with pipe piles and molds. When heating, the heat consumption for heating air is significantly reduced, and more heat energy is used for effective curing.
[0008] A further feature of this invention is that the cover plate is configured to slide mirror-slidably on both sides of the curing pool, the top of the curing pool is provided with a sliding groove located on both sides of the curing cavity, and rollers that slide within the sliding grooves are installed at the bottom of both sides of the cover plate.
[0009] By adopting the above technical solution, the curing pool can be opened or closed simultaneously by both covers. When the covers are opened, the rollers slide in the groove, which converts the sliding friction into rolling friction, greatly reducing the resistance. Workers can push it manually or drive it with a power device, such as a small motor. Compared with hoisting the entire heavy cover, the operation speed is faster and the time is shorter.
[0010] A further feature of this invention is that a handle is fixedly installed on the top of the cover plate.
[0011] By adopting the above technical solution, it is convenient for workers to manually open and close the cover.
[0012] A further feature of this invention is that the tube holder includes a plate and supports fixed at the four corners of the bottom of the plate, and the inner walls on both sides of the curing chamber are provided with limiting grooves for the supports at the four corners to be inserted.
[0013] By adopting the above technical solution, when using a crane to lift the pipe placement frame into the curing pool, the supports at the four corners of the pipe placement frame are inserted into the limiting grooves to achieve the placement and positioning of the pipe placement frame, making it more efficient and convenient to use.
[0014] A further feature of this invention is that the plate body includes a plurality of flat plates located on the same axis and a folded plate fixed between two adjacent flat plates.
[0015] By adopting the above technical solution, the pipe piles are hoisted onto the flat plate, and the adjacent pipe piles are separated by a bend plate, which avoids collisions between the pipe piles or molds during hoisting and unhoisting, improves operational safety, protects the product surface from scratches, and allows steam to come into contact with the pipe piles from multiple directions for effective heat exchange. In addition, the sufficient spacing allows steam to flow and mix freely between the pipe piles, which helps to balance the temperature of different areas in the curing tank, reduce the temperature difference between the upper and lower layers and between the inner and outer layers, and improve the consistency and stability of product quality.
[0016] A further feature of this invention is that the angle plate is provided with multiple ventilation holes.
[0017] By adopting the above technical solution, the ventilation holes allow steam to flow between the upper and lower layers, enabling more efficient heat transfer, which helps to shorten the entire maintenance cycle, improve production efficiency, reduce heat waste, and lower production costs.
[0018] A further feature of this invention is that multiple lifting lugs are provided on both sides of the plate.
[0019] By adopting the above technical solution, the crane uses lifting lugs to lift the pipe rack into or out of the curing pool.
[0020] A further feature of this invention is that a conveying pipe connected to the steam nozzle is installed inside the curing tank, with one end of the conveying pipe extending out of the outside of the curing tank and connected to an external boiler.
[0021] By adopting the above technical solution, the boiler generates high-pressure steam, which is transported to the distribution cylinder through the main steam pipeline. The distribution cylinder stabilizes and distributes the steam, and then the steam is sent to the steam nozzle for uniform spraying through the delivery pipe and the control valve. Finally, the steam fills the entire sealed curing space to heat and humidify the concrete pipe pile for curing.
[0022] The beneficial effects of this utility model are:
[0023] 1. Setting up multi-layer pipe racks to place pipe piles helps to increase the amount of maintenance per session and space utilization. The multi-layer rack design makes the space inside the pool more fully filled with pipe piles and molds. When heating, the heat consumption for heating air is significantly reduced, and more heat energy is used for effective maintenance.
[0024] 2. Using angle plates to separate adjacent pipe piles prevents collisions between pipe piles or molds during hoisting, improving operational safety and protecting the product surface from scratches. It also allows steam to come into contact with the pipe piles from multiple directions for effective heat exchange. Furthermore, the sufficient spacing allows steam to flow and mix freely between the pipe piles, helping to balance the temperature in different areas of the curing tank, reducing temperature differences between upper and lower layers and between inner and outer layers, and improving the consistency and stability of product quality.
[0025] 3. Ventilation holes are set on the corner plate to allow steam to flow between the upper and lower layers, enabling more efficient heat transfer, which helps to shorten the entire maintenance cycle, improve production efficiency, reduce heat waste, and lower production costs. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of this utility model.
[0028] Figure 2 This is a schematic diagram of the centrally located pipe rack structure of this utility model.
[0029] In the diagram, 1 is the curing pool; 2 is the curing chamber; 3 is the steam nozzle; 4 is the cover plate; 5 is the pipe rack; 51 is the plate body; 511 is the flat plate; 512 is the angle plate; 513 is the ventilation hole; 52 is the support frame; 6 is the chute; 7 is the handle; 8 is the limiting groove; and 9 is the conveying pipe. Detailed Implementation
[0030] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0031] Example 1: A steam-sealed curing device for concrete pipe piles, such as... Figure 1As shown, the system includes a curing tank 1 with a curing chamber 2. Steam nozzles 3 are installed on the inner walls of both sides of the curing chamber 2. A cover plate 4 that slides on the top of the curing tank 1 to seal the curing chamber 2 is installed. Multiple sets of pipe-laying assemblies are arranged from bottom to top inside the curing chamber 2, and the pipe-laying assemblies include pipe-laying frames 5. In use, after the concrete is placed, the prestressed steel bars are tensioned, and the centrifugation compaction is completed on a centrifuge, the pipe pile is initially formed in a steel mold. The mold cart containing the newly formed pipe pile is pushed to the static resting area and placed at room temperature for 1-3 hours. This step allows the concrete to initially set and have a certain structural strength, preventing internal damage due to rapid heating during subsequent steam curing. Remove the heat-insulating sealing cover plate 4 on the top of the curing pool 1. First, use a crane to lift the bottom pipe rack 5 into the curing pool 1. Then, place several pre-formed pipe piles onto the pipe rack 5. Next, lift another layer of pipe rack 5 into the curing pool 1 and stack it on top of the bottom pipe rack 5. Lift the pipe piles in again. After the lifting work is completed, put the cover plate 4 back on top of the curing pool 1. Then, introduce steam into the curing pool 1 through the steam nozzle 3 to heat and humidify the concrete pipe piles for curing.
[0032] As a further feature of this invention, the curing pool 1 is equipped with a condensate drainage system located in the curing chamber 2. When the steam cools, it will condense into water. A drainage ditch or pipe is set at the bottom of the curing chamber 2 to drain the condensate in a timely manner, preventing water accumulation from affecting the quality of the pipe pile or damaging the equipment.
[0033] As a further feature of this invention, a temperature sensor is installed in the curing tank 1 to control the heating rate, so that the temperature in the tank rises steadily and evenly from the ambient temperature to the set constant temperature.
[0034] As a further feature of this invention, a humidity sensor is installed in the curing tank 1 to ensure that the humidity is always >95%, forming a saturated steam environment and preventing the concrete from evaporating moisture.
[0035] like Figure 1 As shown, the cover plate 4 is configured to slide mirror-slidably on both sides of the curing tank 1. The top of the curing tank 1 is provided with grooves 6 located on both sides of the curing chamber 2. Rollers that slide within the grooves 6 are installed at the bottom of both sides of the cover plate 4. Since the heat-insulating and sealing cover plate 4 has a certain weight and thickness, setting the rollers to slide within the grooves 6 can convert sliding friction into rolling friction, greatly reducing resistance. Workers can push it manually or drive it with a power device, such as a small motor. Compared to hoisting the entire heavy cover plate 4, the operation speed is faster and the time is shorter.
[0036] As a further feature of this utility model, a handle 7 is fixedly installed on the top of the cover plate 4, which facilitates workers to manually open and close the cover plate 4.
[0037] like Figure 2As shown, the tube placement frame 5 includes a plate 51 and supports 52 fixed at the four corners of the bottom of the plate 51. The inner walls of both sides of the curing chamber 2 are provided with limiting grooves 8 for the four corner supports 52 to be inserted. When the tube placement frame 5 is lifted into the curing tank 1 using a crane, the supports 52 at the four corners of the tube placement frame 5 are inserted into the limiting grooves 8 to achieve placement and positioning of the tube placement frame 5, making it more efficient and convenient to use. When the other side of the tube placement frame 5 is stacked on top of the bottom tube placement frame 5, the supports 52 at the four corners of the tube placement frame 5 are still inserted into the limiting grooves 8.
[0038] As a further feature of this utility model, a reinforcing rib can be added between the bottom of the base plate and the support frame 52 to improve the overall load-bearing capacity of the pipe rack 5 and enhance its structural stability and rigidity.
[0039] like Figure 2 As shown, the plate 51 includes multiple flat plates 511 located on the same axis and angle plates 512 fixed between two adjacent flat plates 511. Pipe piles are hoisted onto the flat plates 511, with the angle plates 512 separating adjacent pipe piles. This prevents collisions between pipe piles or molds during hoisting, improving operational safety and protecting the product surface from scratches. It also allows steam to contact the pipe piles from multiple directions for effective heat exchange. Furthermore, the sufficient spacing allows steam to flow and mix freely between the pipe piles, helping to balance the temperature in different areas of the curing tank 1, reducing temperature differences between upper and lower layers and between inner and outer layers, and improving the consistency and stability of product quality.
[0040] As a further feature of this invention, the angle plate 512 can be replaced with other shaped plates, such as an inverted U-shaped partition.
[0041] As a further feature of this invention, a certain height is left between the bottom wall of the limiting groove 8 and the bottom wall of the curing chamber 2, that is, a certain height is left between the bottom plate 51 and the bottom wall of the curing chamber 2, which helps the steam circulation of the bottom pipe rack 5.
[0042] like Figure 2 As shown, the angle plate 512 is provided with multiple ventilation holes 513. The ventilation holes 513 allow steam to flow between the upper and lower layers, enabling more efficient heat transfer, which helps to shorten the entire maintenance cycle and improve production efficiency.
[0043] As a further feature of this invention, multiple lifting lugs are provided on both sides of the plate 51. These lugs allow a crane to lift the pipe rack 5 into or out of the curing pool 1.
[0044] As a further feature of this invention, a conveying pipe 9 is installed inside the curing tank 1, connecting multiple steam nozzles 3 (multiple steam nozzles 3 located on the same horizontal line are connected to the same pipe, and multiple pipes converge into the conveying pipe 9 and connect to it). The end of the conveying pipe 9 furthest from the steam nozzles 3 extends out of the curing tank 1 and is connected to an external boiler. The boiler generates high-pressure steam, which is delivered to the distribution cylinder through the main steam pipeline. The distribution cylinder stabilizes and distributes the steam, and then, after being regulated by the control valve through the conveying pipe 9, it is sent to the steam nozzles 3 for uniform spraying. Finally, the steam fills the entire sealed curing space, heating and humidifying the concrete pipe piles for curing.
Claims
1. A steam-sealed curing device for concrete pipe piles, comprising a curing pool (1) with a curing chamber (2), wherein steam nozzles (3) are provided on both sides of the inner wall of the curing chamber (2), characterized in that: The top of the curing pool (1) has a cover plate (4) that slides to close the curing chamber (2). The curing chamber (2) is provided with multiple sets of tube placement assemblies from bottom to top. The tube placement assembly includes a tube placement frame (5).
2. The concrete pipe pile steam sealing curing device according to claim 1, characterized in that: The cover plate (4) is configured to slide in mirror image on the curing pool (1). The top of the curing pool (1) is provided with a sliding groove (6) located on both sides of the curing cavity (2). Rollers that slide in the sliding groove (6) are installed at the bottom of both sides of the cover plate (4).
3. The concrete pipe pile steam sealing curing device according to claim 2, characterized in that: A handle (7) is fixedly installed on the top of the cover plate (4).
4. The steam sealing curing device for concrete pipe pile according to claim 1, characterized in that: The tube holder (5) includes a plate (51) and supports (52) fixed at the four corners of the bottom of the plate (51). The inner walls on both sides of the curing cavity (2) are provided with limiting grooves (8) for the supports (52) at the four corners to be inserted.
5. The steam sealing curing device for concrete pipe pile according to claim 4, characterized in that: The plate (51) includes a plurality of flat plates (511) located on the same axis and a corner plate (512) fixed between two adjacent flat plates (511).
6. The steam sealing curing device for concrete pipe pile according to claim 5, characterized in that: The angle plate (512) is provided with multiple ventilation holes (513).
7. The steam sealing curing device for concrete pipe pile according to claim 5, characterized in that: Multiple lifting lugs are provided on both sides of the plate (51).
8. The steam sealing curing device for concrete pipe pile according to claim 1, characterized in that: The curing tank (1) is equipped with a conveying pipe (9) that connects to the steam nozzle (3). The end of the conveying pipe (9) away from the steam nozzle (3) extends out of the outside of the curing tank (1) and is connected to an external boiler.