A comprehensive temperature control system for low-temperature grouting construction of precast columns

Abstract

This application provides a comprehensive temperature control system for low-temperature grouting construction of precast columns, comprising: a fixing rod, a pin, an upper sealing cotton felt cover, a fixing buckle, a lower circular insulating cotton felt cover, a support rod, an electric heating tape, an intelligent temperature control module, a temperature measuring wire, an adjusting belt, and a precast column. The upper sealing cotton felt cover, located around the outer surface of the precast column, has four sets of pre-reserved brazing edges forming a rectangular area. The fixing rod is inserted into these pre-reserved brazing edges. Each fixing rod includes a rectangular hole and a short square hole. The rectangular hole is used for fixing the fixing rod, and the pin is inserted into the short square hole to fix adjacent fixing rods, thus securing the upper sealing cotton felt cover to the precast column. This invention provides a system with independent sealing capabilities, enabling construction without post-grouting, and offers the advantages of reusability and applicability to columns of various sizes.

Description

Technical Field

[0001] This application belongs to the field of building technology, specifically relating to a comprehensive temperature control system for low-temperature grouting construction of precast columns. Background Technology

[0002] Currently, when performing low-temperature grouting on precast columns of assembled monolithic frame structures, the commonly used method is to borrow the post-grouting process from assembled shear wall structures. After sealing all holes in the top slab and surrounding area with cotton blankets to form a windproof and heat-insulating environment, the internal area is heated by a warm air blower, and then the temperature of each grouting point of the precast column is measured manually.

[0003] Although this method can meet the grouting temperature requirements during low-temperature construction, it has the following shortcomings: First, the frame structure has a large open area, making overall sealing difficult and the sealing effect poor; second, after the top slab is sealed, a post-grouting process is required, which causes significant displacement disturbance to the precast columns; third, heating the large space inside the frame requires multiple high-power heating devices, resulting in high energy consumption; and fourth, the manual temperature measurement method used during the curing stage requires a large amount of manpower and time.

[0004] Existing technology discloses a precast column winter grouting construction insulation device (application number: 202321218573.2), including an insulation frame, insulation canvas set on the insulation frame, and a temperature control system and heating system set inside the insulation frame. This device is systematic, replacing previously fragmented components such as cotton felt, making installation and use more convenient. Internal insulation with tin foil effectively saves energy, and it can be stored as a whole after use for easy reuse. However, this device has low integration; various functions are relatively independent, only considering the structure of the insulation frame, and the remaining functions still rely on traditional process methods. Furthermore, the equipment has low recyclability and cannot be applied to precast columns of various cross-sectional sizes in various projects, resulting in limited applicability and potential cost waste due to its single-use nature.

[0005] To address these issues, we propose a comprehensive temperature control system for low-temperature grouting construction of precast columns. Summary of the Invention

[0006] This application provides a comprehensive temperature control system for low-temperature grouting construction of precast columns, comprising: a fixing rod, pins, an upper sealing cotton felt cover, fixing clips, a lower circular insulation cotton felt cover, a support rod, an electric heating tape, an intelligent temperature control module, temperature measuring wires, an adjusting belt, and a precast column.

[0007] The upper sealing felt cover around the outer surface of the precast column has four sets of pre-reserved brazing edges, which form a rectangular area. The fixing rod is inserted into the pre-reserved brazing edge. The fixing rod includes a rectangular hole and a short square hole. The rectangular hole is used for fixing the fixing rod. The pin is inserted into the short square hole to fix adjacent fixing rods, so that the upper sealing felt cover is fixed to the precast column.

[0008] The lower circular thermal insulation cotton felt cover is installed on the inner side of the lower circular thermal insulation cotton felt cover by four sets of support rods, so that the lower circular thermal insulation cotton felt cover is formed into a cylinder. The lower circular thermal insulation cotton felt cover is tightened by the adjustment belt. The fixing buckle is fixedly connected to the upper sealing cotton felt cover and the lower circular thermal insulation cotton felt cover.

[0009] The intelligent temperature control module is connected to the temperature measuring wire, which is located inside the lower circular insulation cotton felt cover. The intelligent temperature control module is fixedly installed on the outside of the support rod.

[0010] In some specific embodiments, the number of fixing rods is four sets, and the four sets of fixing rods are connected end to end to form a rectangular area.

[0011] In some specific embodiments, the rectangular hole and the short rectangular hole are both oriented horizontally.

[0012] In some specific embodiments, the number of rectangular holes is several groups.

[0013] In some specific embodiments, the number of the short square holes is several groups.

[0014] Beneficial effects: This system provides an integrated equipment with independent sealing function and temperature control system. It can eliminate the need for post-grouting construction and treat each precast column as a temperature-controlled unit. The intelligent equipment automatically completes important tasks such as heat preservation, heating and temperature measurement, thereby improving the quality of low-temperature grouting construction of precast columns and ensuring structural safety. It also has the advantages of being reusable and applicable to columns of various sizes.

[0015] This integrated temperature control system features a simple structure, ease of operation, and low cost. It allows for single-floor construction without enclosing the entire work surface; only the grouting area of ​​each precast column needs partial enclosure, narrowing the temperature control range to key grouting areas. Simultaneously, the integrated heating and temperature measurement intelligent system enables automatic temperature control, overcoming the instability of manual operation. It ensures the required temperature is achieved during the post-grouting curing stage, solving the temperature control challenge in low-temperature grouting of precast columns. Furthermore, its flexible design facilitates transportation and storage, and the adjustable structure is suitable for various precast column sizes, offering high recyclability. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram provided by an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the fixing rod connection provided in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the upper sealing cotton felt cover of the present invention.

[0019] Figure 4 This is a schematic diagram of the combination of the lower circular thermal insulation cotton felt cover, support rod, and heating equipment of the present invention.

[0020] Figure 5 This is a schematic diagram of the intelligent temperature control module of the present invention.

[0021] Figure 6 This is a schematic diagram of the lower circular thermal insulation cotton felt cover and support rod storage of the present invention.

[0022] Reference numerals: 1. Fixing rod; 2. Rectangular hole; 3. Short square hole; 4. Pin; 5. Upper sealing cotton felt cover; 6. Reserved brazing edge; 7. Fixing buckle; 8. Lower circular thermal insulation cotton felt cover; 9. Support rod; 10. Electric heating tape; 11. Intelligent temperature control module; 12. Temperature measuring wire; 13. Adjusting belt; 14. Precast column. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] A comprehensive temperature control system for low-temperature grouting construction of precast columns includes: a fixing rod 1, a pin 4, an upper sealing cotton felt cover 5, a fixing buckle 7, a lower circular insulation cotton felt cover 8, a support rod 9, an electric heating tape 10, an intelligent temperature control module 11, a temperature measuring wire 12, an adjusting belt 13, and a precast column 14.

[0026] like Figure 1 As shown, the upper sealing cotton felt cover 5 around the outer surface of the precast column 14 is provided with a reserved brazing edge 6. There are four sets of reserved brazing edges 6, which form a rectangular area. The fixing rod 1 is inserted into the reserved brazing edge 6. The fixing rod 1 includes a rectangular hole 2 and a short square hole 3. The rectangular hole 2 is used for fixing the fixing rod 1. The pin 4 is inserted into the short square hole 3 to fix adjacent fixing rods 1 so that the upper sealing cotton felt cover 5 is fixed to the precast column 14.

[0027] The lower circular thermal insulation cotton felt cover 8 is installed on the inner side of the lower circular thermal insulation cotton felt cover 8 by four sets of support rods 9, so that the lower circular thermal insulation cotton felt cover 8 forms a cylinder. The lower circular thermal insulation cotton felt cover 8 is tightened by the adjusting belt 13. The fixing buckle 7 fixes the upper sealing cotton felt cover 5 and the lower circular thermal insulation cotton felt cover 8.

[0028] The intelligent temperature control module 11 is connected to the temperature measuring wire 12, which is located inside the lower circular thermal insulation cotton felt cover 8. The intelligent temperature control module 11 is fixedly installed on the outside of the support rod 9.

[0029] This invention provides a comprehensive equipment with independent sealing function and integrated temperature control system. Based on this equipment system, post-grouting construction can be eliminated. Each precast column is treated as a temperature control unit, and intelligent equipment is used to automatically complete important tasks such as heat preservation, heating, and temperature measurement. This improves the quality of low-temperature grouting construction of precast columns and ensures structural safety. It also has the advantages of being reusable and applicable to columns of various sizes.

[0030] This integrated temperature control system features a simple structure, ease of operation, and low cost. It allows for single-floor construction without enclosing the entire work surface; only the grouting area of ​​each precast column needs partial enclosure, narrowing the temperature control range to key grouting areas. Simultaneously, the integrated heating and temperature measurement intelligent system enables automatic temperature control, overcoming the instability of manual operation. It ensures the required temperature is achieved during the post-grouting curing stage, solving the temperature control challenge in low-temperature grouting of precast columns. Furthermore, its flexible design facilitates transportation and storage, and the adjustable structure is suitable for various precast column sizes, offering high recyclability.

[0031] In some specific embodiments, the number of fixing rods 1 is four groups (4 rods), and the four groups (4 rods) of fixing rods 1 are connected end to end to form a rectangular area.

[0032] In some specific embodiments, the rectangular hole 2 and the short rectangular hole 3 are both oriented horizontally.

[0033] In some specific embodiments, the number of rectangular holes 2 is several groups.

[0034] In some specific embodiments, the number of the short square holes 3 is several groups.

[0035] The components include a grid-shaped fixing rod 1, an upper sealing cotton felt cover 5, a lower circular insulating cotton felt cover 8, a support rod 9, and an intelligent temperature control device 11. After assembly, this equipment should be placed at the bottom of the precast column, at an appropriate height with well-sealed edges and corners.

[0036] The fixing rod consists of four perforated square steel bars, each thinner at the front and thicker at the back. Each bar can be inserted and connected to the pre-reserved edge on the upper edge of the upper sealing cotton felt cover 5. The rectangular holes on the steel bars can be adjusted to fit the insertion end more closely to the size of the precast column; the short square holes can be used to insert pins to fix the overall structure. Friction makes it fit tightly against the precast column to achieve a sealing effect and fix the upper sealing cotton felt cover.

[0037] The upper sealing felt cover is made of a rectangular glass wool felt, with four equally long pre-reserved bracing edges evenly spaced along one side, leaving sufficient gaps for the insertion of square steel bars. The grid-shaped frame composed of four fixing rods can flexibly accommodate precast columns of various sizes, and its fixation improves the overall sealing performance of the equipment.

[0038] The lower circular insulating cotton felt cover is formed by a rectangular glass wool felt, which is connected and fixed to the upper sealing cotton felt cover with snaps. The main function of this part is to surround the space at the bottom of the precast column, providing a relatively sealed environment and suitable curing temperature for the grouting sleeve. The inside of the cover has heating equipment, electric heat tracing, and temperature monitoring equipment.

[0039] The support rod consists of multiple telescopic support rods, which provide effective support for the lower circular insulation cotton felt cover during operation, ensuring it reaches and is fixed at a suitable height, and can resist crosswind disturbances to a certain extent. When storing the lower circular insulation cotton felt cover, it effectively protects the internal equipment from excessive bending and damage, and facilitates storage and organization after use.

[0040] The temperature control device consists of an electric heat tracing heating unit and a temperature monitoring device. After the lower circular insulation cotton felt cover is formed, the electric heat tracing cable is spirally arranged inside the cover, and the temperature monitoring probe is placed inside the cover to monitor the temperature. The temperature information is wirelessly transmitted to the operator's computer via an externally suspended temperature control module, allowing for remote real-time acquisition of the temperature inside the cover and controllable adjustment of the electric heat tracing cable heating temperature at any time.

[0041] See Figures 2 to 6 A comprehensive temperature control system for low-temperature grouting construction of precast columns includes a fixed rod 1, an upper sealing cotton felt cover 5, a lower circular insulation cotton felt cover 8, a support rod 9, an intelligent temperature control module 11, and its auxiliary components, an electric heating cable 10 and a temperature measuring wire 12.

[0042] Estimate the dimensions of the precast column 14, select four fixing rods 1 of suitable length, adjust the opening orientation of the rectangular holes 2 and short square holes 3 to be horizontal, insert the fixing rods 1 into the reserved pin edges 6 in sequence, lift the four fixing rods 1, and assemble the precast column 14 together with the upper sealing cotton felt cover 5 and adjust it to a suitable height. Insert the thinner end into the adjacent rectangular holes 2 in sequence and adjust the position, and use the pin 4 to insert into the short square holes 3 to tighten the grid-shaped fixing rods. Figure 2 As shown, this fixes the upper sealing cotton felt cover 5 to the precast column 14.

[0043] Estimate the height of the grouting sleeve for the precast column 14, unfold the lower circular insulation cotton felt cover 8 into a rectangle, install the four support rods 9 to the designated positions inside the cover and extend them appropriately. Stand the lower circular insulation cotton felt cover 8 vertically, forming a cylinder, and tighten the adjusting strap 13 appropriately. Install the heating device electric heating tape 10 along the spiral on the inner wall. After installation, tighten the adjusting strap 13 to form a sealed cylinder. Figure 4 As shown.

[0044] Secure the upper sealing cotton felt cover 5 and the lower circular insulating cotton felt cover 8 by fastening the fixing buckles 7 in sequence. Adjust the height to ensure that the upper sealing cotton felt cover 5 remains loose, the support rod 7 touches the ground, and the lower edge of the lower circular insulating cotton felt cover 8 has some clearance and is piled on the ground. Connect the temperature measuring wire 12 to the intelligent temperature control module 11. Insert the end temperature measuring head into the space enclosed by the lower circular insulating cotton felt cover 8 through the special hole. The intelligent temperature control module 11 is installed on the outside of the designated support rod 9.

[0045] Test whether the temperature monitoring, heating, and signal transmission functions are working properly, check whether there are any excessive gaps in the entire set of equipment, and only operate it after confirming that there are no problems.

[0046] Working principle: The entire device is wrapped with glass wool felt, which makes the interior relatively sealed and heat-insulated, effectively reducing convection and heat exchange with the outside, and slowing down the rate of temperature drop. After the intelligent temperature control module 11 is activated, the temperature sensing wire 12 will monitor the temperature change in real time. Once the temperature drops below the set temperature, the heating device electric heating tape 10 will be automatically activated to heat the internal temperature to the specified temperature and then automatically cut off the power.

[0047] This repeated operation ensures that the internal temperature remains higher than the external temperature, which in turn raises the temperature near the sleeve, guaranteeing the curing temperature of the grout and thus improving the quality of the grouting process.

[0048] After use, the support rod 7 can be retracted, and the lower circular thermal insulation felt cover 8 can be stored away. Figure 6 The design facilitates transportation and can protect the equipment from excessive bending to some extent.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A comprehensive temperature control system for low-temperature grouting construction of precast columns, characterized in that, include: The components include a fixing rod (1), a pin (4), an upper sealing cotton felt cover (5), a fixing buckle (7), a lower circular thermal insulation cotton felt cover (8), a support rod (9), an electric heating tape (10), an intelligent temperature control module (11), a temperature measuring wire (12), an adjusting belt (13), and a prefabricated column (14). The upper sealing cotton felt cover (5) around the outer surface of the precast column (14) is provided with a reserved brazing edge (6). There are four sets of reserved brazing edges (6), which form a rectangular area. The fixing rod (1) is inserted into the reserved brazing edge (6). The fixing rod (1) includes a rectangular hole (2) and a short square hole (3). The rectangular hole (2) is used for fixing the fixing rod (1). The pin (4) is inserted into the short square hole (3) to fix the adjacent fixing rods (1) so that the upper sealing cotton felt cover (5) is fixed to the precast column (14). The lower circular thermal insulation cotton felt cover (8) is formed into a cylinder by installing four sets of support rods (9) on the inside of the lower circular thermal insulation cotton felt cover (8). The lower circular thermal insulation cotton felt cover (8) is tightened by the adjusting belt (13). The fixing buckle (7) fixes the upper sealing cotton felt cover (5) and the lower circular thermal insulation cotton felt cover (8). The intelligent temperature control module (11) is connected to the temperature measuring wire (12). The temperature measuring wire (12) is set in the internal space of the lower circular thermal insulation cotton felt cover (8). The intelligent temperature control module (11) is fixedly installed on the outside of the support rod (9). The support rod (9) is composed of multiple telescopic support rods.

2. The integrated temperature control system equipment for low-temperature grouting construction of precast columns according to claim 1, characterized in that, The number of fixed rods (1) is four sets, and the four sets of fixed rods (1) are connected end to end to form a rectangular area.

3. The integrated temperature control system equipment for low-temperature grouting construction of precast columns according to claim 1, characterized in that, The rectangular hole (2) and the short rectangular hole (3) are both oriented horizontally.

4. The integrated temperature control system equipment for low-temperature grouting construction of precast columns according to claim 1, characterized in that, The number of rectangular holes (2) is several groups.

5. The integrated temperature control system equipment for low-temperature grouting construction of precast columns according to claim 1, characterized in that, The number of the short square holes (3) is several groups.

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