An electric blanket for heating concrete core walls

Abstract

This utility model discloses an electric heating blanket for heating concrete core walls, relating to the field of temperature control devices. It includes: a layered main body comprising a waterproof and wear-resistant layer, a heat-insulating and reflective layer, a heating layer, and a flexible support layer stacked sequentially; a temperature adjustment mechanism for selecting the heating level of the electric heating blanket; and a magnetic fixing strap for fixing it to the surface of the asphalt concrete core wall. The magnetic fixing strap is detachably connected to the edge of the layered main body, and the layered main body is connected to the temperature adjustment mechanism. This utility model features a novel design, is easy to carry, and optimizes heat conduction efficiency through the multi-layered structure of the layered main body, significantly improving construction adaptability and energy utilization. It is suitable for concrete curing operations in low-temperature environments such as dams and reservoirs.

Description

Technical Field

[0001] This utility model relates to the field of temperature control device technology, specifically an electric heating blanket for heating concrete core walls. Background Technology

[0002] During the construction of roller-compacted concrete core walls, segmented construction along the dam axis is not required, but rather layered construction in the horizontal direction. The thickness of each layer is typically 20-30 cm. Therefore, the interlayer bonding surfaces become the main weak points in the dam's seepage prevention structure and a key focus for construction quality control. According to the "Specifications for Construction of Hydraulic Asphalt Concrete," if the layer temperature is below 70℃ during core wall construction, heating measures are required to raise the bonding surface temperature to 70℃-90℃. Furthermore, work must be stopped every 2-4 meters of asphalt concrete core wall elevation to allow for core sampling and quality testing. This inevitably leads to difficulties in maintaining the bonding surface temperature above 70℃, necessitating surface heating of the asphalt concrete core wall before proceeding to the next layer.

[0003] Currently, commonly used traditional layer heating processes include: flame torch heating, infrared radiation heating, hot sand heating, and hot air circulation heating, but none of these methods achieve ideal heating results. Flame torches are the most frequently used heating method in asphalt concrete core wall construction; however, the concentrated heating area and uneven heat distribution can easily lead to localized overheating or underheating of the asphalt concrete layer. Overheated areas can cause asphalt aging and charring, while underheated areas can affect the interlayer bonding quality. The heating temperature of flame torches is difficult to control precisely and is greatly affected by the operator's skill level and environmental factors (such as wind speed). Furthermore, the heat utilization rate of flame torches is low, with most heat lost to the air, and the heating depth is insufficient.

[0004] Infrared radiation heating technology has limited heating depth in asphalt concrete core walls, and its heating efficiency is greatly affected by ambient temperature, wind speed, and humidity. In low-temperature or windy environments, heat loss is rapid, resulting in decreased heating effectiveness and limited applicability. The initial investment cost of infrared radiation heating equipment is high, requiring a substantial budget. The uniformity of infrared auxiliary heating is highly dependent on the equipment layout and radiation range, placing higher demands on the technical skills of the operators.

[0005] The hot sand heating process requires the use of asphalt concrete mixing plants to heat a relatively thick layer of hot sand. For wide river valley asphalt concrete core walls, the demand is too large, the heating temperature is difficult to control precisely, and the cleaning work of the surface after heating is too heavy, which easily causes dust to accumulate on the surface of the bonding layer. When the ambient temperature is too low, a thicker layer of hot sand is needed to ensure the heating effect of the surface.

[0006] Hot air circulation heating process has high energy consumption and high operating costs. It requires the construction of a warm shed on the surface of the core wall, which is not conducive to the construction of the core wall. It also requires high technical skills from operators and precise control of wind speed and temperature.

[0007] In summary, the methods described above have many limitations in practical applications, and existing electric blankets are mostly single-layer designs, lacking control over heat reflection and loss, making them difficult to adapt to the construction needs of core walls of different sizes. Therefore, an electric blanket for heating concrete core walls is needed to solve the above technical problems and provide an improvement for the rapid construction of asphalt concrete core walls. Utility Model Content

[0008] In view of this, the present invention provides an electric heating blanket for heating concrete core walls. Compared with traditional electric heating blankets, the present invention has a novel design, is easy to carry, and optimizes heat conduction efficiency through the multi-layer structure of the layered main body, significantly improving construction adaptability and energy utilization. It is suitable for concrete curing operations in low-temperature environments such as dams and reservoirs.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An electric heating blanket for heating concrete core walls, comprising:

[0011] A layered body, comprising a waterproof and wear-resistant layer, a heat-insulating and reflective layer, a heating layer, and a flexible support layer stacked sequentially;

[0012] The temperature setting adjuster is used to select the heating level of the electric blanket.

[0013] Magnetic fixing straps are used to fix the surface of asphalt concrete core walls;

[0014] The magnetic fixing strap is detachably connected to the edge of the layered body, and the layered body is connected to a gear adjuster.

[0015] Furthermore, the outer surface of the waterproof and wear-resistant layer is pressed with cross-shaped anti-slip texture.

[0016] Furthermore, the heat-insulating reflective layer is made of aluminum foil composite glass fiber cloth.

[0017] Furthermore, the heating layer includes serpentine carbon fiber heating wires, which are connected to a temperature control system located between the heat insulation and reflective layer and the heating layer. The temperature control system is electrically connected to a gear adjuster.

[0018] Furthermore, the temperature control system includes a temperature sensor and a temperature controller, and both the carbon fiber heating wire and the temperature sensor are electrically connected to the temperature controller.

[0019] Furthermore, the flexible support layer is made of closed-cell foamed polyethylene.

[0020] Furthermore, the magnetic fastening strap includes a magnetic sub-strip and a magnetic female strip. The magnetic sub-strip is provided with a magnetic buckle, and the magnetic female strip is provided with multiple magnetic female buckles arranged at intervals. The magnetic buckles and the magnetic female buckles are magnetically connected.

[0021] The beneficial effects of this utility model are as follows:

[0022] This invention features a novel design and is easy to carry. The waterproof and wear-resistant layer of the layered main body enhances its pressure resistance and friction resistance. The heat-insulating and reflective layer reflects internal heat and blocks external low temperatures, reducing heat loss. By selecting different heating temperatures, the carbon fiber heating wires in the heating layer ensure uniform heating. Furthermore, the flexible support layer provides cushioning and enhances the overall flexibility of the electric blanket, optimizing heat conduction efficiency and significantly improving construction adaptability and energy utilization. This solves the problems of high energy consumption, uneven temperature, and poor adaptability of traditional heating devices. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the layered main body structure;

[0026] Figure 3 This is a schematic diagram of the heating layer structure;

[0027] Figure 4 This is a schematic diagram of the magnetic fixing strap structure;

[0028] In the figure:

[0029] 1-Layered main body; 2-Magnetic fixing strap; 3-Gear adjuster; 4-Waterproof and wear-resistant layer; 5-Heat insulation and reflective layer; 6-Heating layer; 7-Flexible support layer; 8-Carbon fiber heating wire; 9-Temperature sensor; 10-Temperature controller; 11-Magnetic sub-strip; 12-Magnetic female strip; 13-Magnetic buckle; 14-Magnetic female buckle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1-4 This utility model provides an electric heating blanket for heating concrete core walls, comprising:

[0032] The layered body 1 includes a waterproof and wear-resistant layer 4, a heat-insulating and reflective layer 5, a heating layer 6, and a flexible support layer 7 stacked sequentially.

[0033] The temperature adjustment switch 3 is used to select the temperature heating level of the electric blanket.

[0034] Magnetic fixing strap 2 is used to fix the surface of the asphalt concrete core wall;

[0035] The magnetic fixing strap 2 is detachably connected to the edge of the layered body 1, and the layered body 1 is connected to the gear adjuster 3.

[0036] Preferably, the outer surface of the waterproof and wear-resistant layer 4 is pressed with cross-corrugated anti-slip texture, and the waterproof and wear-resistant layer 4 is made of high-strength PVC coated fabric, which can improve the pressure resistance and friction.

[0037] Preferably, the heat insulation and reflective layer 5 is made of aluminum foil composite glass fiber cloth. The aluminum foil surface is smooth and dense. Through the principle of mirror reflection, it reflects the long-wave infrared radiation emitted by the heating layer 6 to the concrete surface, preventing heat from escaping in the form of radiation, and also blocking the external low temperature.

[0038] Preferably, the heating layer 6 includes serpentine carbon fiber heating wires 8, which are connected to a temperature control system located between the heat insulation and reflective layer 5 and the heating layer 6. The temperature control system is electrically connected to the gear adjuster 3 to ensure uniform heating.

[0039] Preferably, the temperature control system includes a temperature sensor 9 and a temperature controller 10, and the carbon fiber heating wire 8 and the temperature sensor 9 are both electrically connected to the temperature controller 10.

[0040] Preferably, the flexible support layer 7 is made of closed-cell foamed polyethylene pad, which can provide cushioning and enhance the overall flexibility of the electric blanket.

[0041] Preferably, the magnetic fixing band 2 includes a magnetic sub-band 11 and a magnetic female band 12. The magnetic sub-band 11 is provided with a magnetic buckle 13, and the magnetic female band 12 is provided with a plurality of magnetic female buckles 14 arranged at intervals. The magnetic buckles 13 and magnetic female buckles 14 are magnetically connected to each other and are suitable for anchoring points on steel formwork or concrete surfaces.

[0042] The specific method of using this utility model is as follows:

[0043] Lay the electric blanket in the target position and fix it with the magnetic fixing strap 2. After connecting the external power supply, it can be heated. If you need to increase the temperature of the electric blanket, you can use the temperature regulator 3 to adjust the temperature heating level of the electric blanket.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric blanket for heating a concrete core wall, characterized by, include: The layered body (1) includes a waterproof and wear-resistant layer (4), a heat-insulating and reflective layer (5), a heating layer (6), and a flexible support layer (7) stacked in sequence. The temperature regulator (3) is used to select the temperature heating level of the electric blanket; Magnetic fixing strap (2) is used to fix the asphalt concrete core wall to the surface; The magnetic fixing strap (2) is detachably connected to the edge of the layered body (1), and the layered body (1) is connected to a gear adjuster (3).

2. The electric blanket for heating concrete core walls according to claim 1, characterized in that, The outer surface of the waterproof and wear-resistant layer (4) is pressed with cross-corrugated anti-slip texture.

3. An electric blanket for heating a concrete core wall according to claim 1, wherein The heat-insulating reflective layer (5) is made of aluminum foil composite glass fiber cloth.

4. An electric blanket for heating a concrete core wall according to claim 1, wherein The heating layer (6) includes a serpentine arrangement of carbon fiber heating wires (8), which are connected to a temperature control system located between the heat insulation and reflective layer (5) and the heating layer (6). The temperature control system is electrically connected to the gear adjuster (3).

5. An electric blanket for heating a concrete core wall according to claim 4, wherein The temperature control system includes a temperature sensor (9) and a temperature controller (10), and the carbon fiber heating wire (8) and the temperature sensor (9) are both electrically connected to the temperature controller (10).

6. An electric blanket for heating a concrete core wall according to claim 1, wherein The flexible support layer (7) is made of closed-cell foamed polyethylene.

7. An electric blanket for heating a concrete core wall according to claim 1, wherein The magnetic fastening strap (2) includes a magnetic sub-strip (11) and a magnetic female strip (12). The magnetic sub-strip (11) is provided with a magnetic buckle (13), and the magnetic female strip (12) is provided with a plurality of magnetic female buckles (14) arranged at intervals. The magnetic buckles (13) and the magnetic female buckles (14) are magnetically connected.

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