Heating device for concrete structural column

Abstract

The utility model discloses a heating device for a concrete structure column. The heating device comprises an electric heating wire, an inner heat preservation cotton felt, an inner plastic film, an outer heat preservation cotton felt and an outer plastic film. An inner plastic film, an inner heat preservation cotton felt, an electric heating wire, an outer plastic film and an outer heat preservation cotton felt are sequentially arranged on the outer side of the concrete column. The electric heating wires are wound on the concrete column and are arranged at intervals in the length direction of the concrete column. The problem that in the prior art, due to the internal and external temperature difference in the construction period of a traditional concrete structure in winter, concrete cracks are easily caused, and the strength is reduced is solved. The technical effects of controlling the temperature difference inside and outside the concrete structural column and preventing concrete from cracking are achieved, and therefore the quality of the concrete structural column is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction heat preservation, and in particular to a heating device for a concrete structure column. BACKGROUND

[0002] In the field of concrete heat preservation technology for building engineering construction in winter, concrete structure heat preservation is generally carried out by covering with straw mats or rock wool to reduce the internal and external temperature difference of the building after pouring concrete in winter, so as to ensure construction quality and progress. The durability, safety and thermal bridge effect of the traditional concrete structure heat preservation method mainly depend on material quality, flame retardant performance, use position and the like.

[0003] In some special structure parts such as inclined columns, heat loss and condensation phenomenon are easily caused, it is difficult to ensure the quality and strength of the concrete structure, and further causes problems such as late start of the next process and concrete cracks. It does not meet the development requirements of building engineering quality standard construction, and does not meet the requirements of the state for safety production, quality engineering and social benefits. In order to quickly improve the strength of the inclined concrete column during winter construction, and improve the standardization degree of winter heat preservation construction, it is urgent to develop a heating device suitable for a concrete structure column. CONTENT OF THE INVENTION

[0004] The embodiment of the present application provides a heating device for a concrete structure column, which solves the problem that the strength of the traditional concrete structure is reduced due to the internal and external temperature difference during winter construction in the prior art. The technical effect of controlling the temperature difference between the inside and outside of the concrete structure column is achieved, so that the quality of the concrete structure column is improved.

[0005] The embodiment of the present application provides a heating device for a concrete structure column, which solves the problem that the strength of the traditional concrete structure is reduced due to the internal and external temperature difference during winter construction in the prior art. The technical effect of controlling the temperature difference between the inside and outside of the concrete structure column is achieved, so that the quality of the concrete structure column is improved.

[0006] In a possible implementation manner, the heating device further comprises a limiting assembly; the two ends of the concrete column are provided with the limiting assembly; the limiting assembly is sleeved on the reinforcing steel bars, and the two ends of the electric heating wire are connected with the corresponding limiting assembly at the two ends of the concrete column.

[0007] In a possible implementation manner, the electric heating wire comprises a first electric heating wire and a second electric heating wire; the first electric heating wire and the second electric heating wire are arranged in parallel.

[0008] In a possible implementation, the limiting assembly comprises a first fixed disc set and a second fixed disc set; the first fixed disc set is arranged at two ends of the concrete column, and the first fixed disc set is sleeved on the steel bar; the second fixed disc set is arranged at two ends of the concrete column, and the second fixed disc set is sleeved on the steel bar; and the first fixed disc set and the first fixed disc set are arranged at intervals.

[0009] In a possible implementation, a first limiting hole is formed in the first fixed disc set; a second limiting hole is formed in the second fixed disc set; an end of the first electric heating wire is arranged in the first limiting hole; and an end of the second electric heating wire is arranged in the second limiting hole.

[0010] In a possible implementation, a thermometer is arranged on the concrete column; and the thermometer is configured to detect the temperature of the concrete column.

[0011] In a possible implementation, a steel pipe is further included; the steel pipe is pre-buried before pouring; a bottom of the steel pipe is sealed, and a liquid is arranged in the steel pipe; and the thermometer is arranged in the liquid.

[0012] In a possible implementation, a control module and an intelligent monitoring system are further included; the control module is electrically connected with a signal output end of the thermometer; the intelligent monitoring system is electrically connected with the control module; and the intelligent monitoring system is arranged in a mobile phone.

[0013] The one or more technical solutions provided in the application have at least the following technical effects:

[0014] 1. The utility model discloses a heating device for concrete structure column, including electric heating wire, inner thermal insulation cotton felt, inner plastic film and outer thermal insulation cotton felt and outer plastic film, adopt the composite structure of double thermal insulation layers of inside and outside cooperation plastic film, and the inner layer film effectively locks up concrete hydration heat and electric heating heat, and the double -layer thermal insulation cotton felt forms gradient heat shield barrier, and the heat efficiency has obvious improvement compared with traditional single -layer insulation mode.

[0015] 2. Electric heating wire is arranged along the length direction of column body equidistance, and cooperation intelligent temperature control system can realize the accurate control of axial temperature field ± 2 DEG C, avoids the local overheating and cold joint defect caused by traditional wrapping type heating.

[0016] 3. The unique damp-proof film interlayer design can prevent the thermal insulation material from being damped and invalid, and also maintain the suitable humidity environment of concrete, and the device is particularly suitable for low-temperature environment construction below-15 DEG C, and can ensure the winter construction quality and structural durability of mass concrete column.

[0017] 4.The application solves the problem of the traditional concrete structure in the prior art that is prone to cracks and reduced strength due to internal and external temperature difference during winter construction. The application achieves the technical effect of controlling the temperature difference between the inside and outside of the concrete structure column and preventing cracks in the concrete, thereby improving the quality of the concrete structure column. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 A front view of a heating device for a concrete structure column provided by the embodiments of the present application;

[0020] Figure 2 A top view of a heating device for a concrete structure column provided by the embodiments of the present application;

[0021] Figure 3 A-A sectional view of Figure 2

[0022] Figure legend: 1-electric heating wire; 11-first electric heating wire; 12-second electric heating wire; 2-limiting assembly; 21-first fixed disc group; 22-second fixed disc group; 3-thermometer; 4-steel pipe; 5-control module; 6-intelligent monitoring system; 7-concrete column; 8-reinforcing steel. DETAILED DESCRIPTION

[0023] The technical solutions of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] ​In the description of the embodiments of the utility model, it needs to be explained that, the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the drawings shown, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0025] The utility model embodiments provide a kind of heating device for concrete structure column, as shown in Figures 1-3 Concrete column 7 outside is sequentially provided with inner plastic film, inner thermal cotton felt, electric heating wire 1, outer plastic film and outer thermal cotton felt;Electric heating wire 1 is wound on concrete column 7, and electric heating wire 1 is spaced apart in the length direction of concrete column 7.

[0026] Exemplarily, electric heating wire 1 is uniformly arranged in S type or spiral shape, electric heating wire 1 is tied to the end of reinforcing bar 8, electric heating wire 1 is accurately positioned by limiting hole, to avoid displacement in the process of pouring, and the spacing of electric heating wire 1 is controlled at about 15-20cm, by increasing contact area and avoiding local overheating.

[0027] In the embodiments of the present application, as shown in Figures 1-3 Still include limiting component 2;The both ends of concrete column 7 are provided with limiting component 2;Limiting component 2 is set on reinforcing bar 8, and the both ends of electric heating wire 1 are connected with the corresponding limiting component 2 of the both ends of concrete column 7 respectively.

[0028] In the embodiments of the present application, as shown in Figures 1-3 Electric heating wire 1 includes first electric heating wire 11 and second electric heating wire 12;First electric heating wire 11 and second electric heating wire 12 are connected in parallel.

[0029] Exemplarily, electric heating wire 1 is connected in parallel, so that other branches can still work normally even if a branch fails, to improve system stability.

[0030] In the embodiments of the present application, as shown in Figures 1-3As shown, the limiting component 2 includes a first fixed disc set 21 and a second fixed disc set 22; the first fixed disc set 21 is arranged at both ends of the concrete column 7, and the first fixed disc set 21 is sleeved on the steel bar 8; the second fixed disc set 22 is arranged at both ends of the concrete column 7, and the second fixed disc set 22 is sleeved on the steel bar 8; the first fixed disc set 21 and the first fixed disc set 21 are arranged at intervals.

[0031] For example, the first fixed disc set 21 and the second fixed disc set 22 are made of high-temperature-resistant engineering plastics (such as PEEK), and the outer edge is provided with annularly distributed limiting holes, and a ceramic insulation sleeve is embedded in the hole to avoid short circuit caused by direct contact between the heating wire 1 and the steel bar 8.

[0032] For example, the first heating wire 11 and the second heating wire 12 are made of nickel-chromium alloy material, and the surface is coated with a silica gel insulation layer.

[0033] In the embodiment of the application, as shown in the figure, Figures 1-3 The first fixed disc set 21 is provided with a first limiting hole; the second fixed disc set 22 is provided with a second limiting hole; the end of the first heating wire 11 is arranged in the first limiting hole; and the end of the second heating wire 12 is arranged in the second limiting hole.

[0034] For example, the first heating wire 11 and the first limiting hole are filled with high-temperature-resistant epoxy glue, which further fixes and improves the waterproof performance.

[0035] In the embodiment of the application, as shown in the figure, Figures 1-3 The concrete column 7 is provided with a thermometer 3; the thermometer 3 is configured to detect the temperature of the concrete column 7;

[0036] In the embodiment of the application, as shown in the figure, Figures 1-3 It also includes a steel pipe 4; the steel pipe 4 is pre-buried before pouring; the bottom of the steel pipe 4 is sealed, and the steel pipe 4 is provided with water; and the thermometer 3 is arranged in the water.

[0037] For example, a plurality of φ20 steel pipes 4 (interval ≤50cm) are pre-buried in the core, surface and four corners of the concrete column 7, the steel pipes 4 are fixed by being tied and fastened with the main reinforcement through U-shaped buckles, the bottom is welded and sealed, and then deionized water is injected, so as to avoid freezing to affect the temperature measurement accuracy.

[0038] For example, the thermometer 3 adopts a PT100 platinum resistance sensor, the probe of which is immersed in water and passes out of the steel pipe 4 through a data line, and a waterproof junction box is externally connected to the control module 5.

[0039] In the embodiment of the application, as shown in the figure, Figures 1-3 It also includes a control module 5 and an intelligent monitoring system 6; the control module 5 is electrically connected with the signal output end of the thermometer 3; the intelligent monitoring system 6 is electrically connected with the control module 5; and the intelligent monitoring system 6 is arranged in a mobile phone.

[0040] For example, φ20 steel pipe 4 is pre-embedded before pouring, the bottom of the steel pipe 4 is welded to be airtight, the thermometer 3 is inserted after water injection, the core, surface and ambient temperature of the concrete are monitored, the temperature change is dynamically monitored on the mobile phone through the intelligent monitoring system 6 and the heating power is adjusted, the power is automatically turned off or the heating is started when the temperature exceeds the limit, and the cracking caused by the large temperature difference is avoided. For the mass concrete column 7, it can be divided into multiple heating zones, the power of each zone is independently adjusted through the program controller, and the gradient control of the temperature rising and constant temperature stages is realized. The temperature rises at a rate of 1.5℃ / h in the initial stage, and the constant temperature mode is switched after the target temperature is reached.

[0041] For example, the concrete column 7 is divided into multiple independent heating zones along the height direction, such as 1.5m high per zone, an independent heating wire 1 loop and a control relay are configured for each zone, the power of each zone is dynamically adjusted through the PID algorithm, and the axial temperature difference is ensured to be less than or equal to 3℃.

[0042] For example, the intelligent monitoring system 6 sets the core and surface temperature difference threshold value to 25℃, automatically triggers the audible and light alarm when the temperature difference exceeds the limit, pushes the early warning information through the mobile phone APP, and reduces the heating power at the same time.

[0043] For example, the control module 5 is provided with a leakage protector and an overload circuit breaker, an insulation impedance monitoring module is arranged between the heating wire 1 loop and the steel reinforcement cage, and the power supply is automatically cut off when an abnormality occurs.

[0044] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0045] The above examples are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A heating device for a concrete structural column, characterized by, The heating device for concrete structure column comprises an electric heating wire (1), inner thermal insulation cotton felt, inner plastic film, outer thermal insulation cotton felt and outer plastic film. The outer side of the concrete column (7) is sequentially provided with the inner plastic film, the inner thermal insulation cotton felt, the electric heating wire (1), the outer plastic film and the outer thermal insulation cotton felt. The electric heating wire (1) is wound on the concrete column (7), and the electric heating wire (1) is arranged at intervals in the length direction of the concrete column (7).

2. The heating apparatus for a concrete structural column according to claim 1, characterized by, The heating device further comprises a limiting assembly (2). Both ends of the concrete column (7) are provided with the limiting assembly (2). The limiting assembly (2) is sleeved on the reinforcing steel bar (8), and both ends of the electric heating wire (1) are connected with the corresponding limiting assembly (2) at both ends of the concrete column (7).

3. The heating apparatus for a concrete structural column according to claim 2, characterized by, The electric heating wire (1) comprises a first electric heating wire (11) and a second electric heating wire (12). The first electric heating wire (11) and the second electric heating wire (12) are arranged in parallel.

4. The heating apparatus for a concrete structural column according to claim 3, characterized by, The limiting assembly (2) comprises a first fixed disc group (21) and a second fixed disc group (22). The first fixed disc group (21) is arranged at both ends of the concrete column (7), and the first fixed disc group (21) is sleeved on the reinforcing steel bar (8). The second fixed disc group (22) is arranged at both ends of the concrete column (7), and the second fixed disc group (22) is sleeved on the reinforcing steel bar (8). The first fixed disc group (21) and the first fixed disc group (21) are arranged at intervals.

5. The heating device for concrete structure column according to claim 4, wherein, A first limiting hole is formed in the first fixed disc group (21). A second limiting hole is formed in the second fixed disc group (22). The end of the first electric heating wire (11) is arranged in the first limiting hole. The end of the second electric heating wire (12) is arranged in the second limiting hole.

6. The heating apparatus for a concrete structural column according to claim 1, wherein A thermometer (3) is arranged on the concrete column (7), and the thermometer (3) is configured to detect the temperature of the concrete column (7).

7. The heating apparatus for a concrete structural column according to claim 6, wherein The heating device further comprises a steel pipe (4). The steel pipe (4) is pre-buried before pouring. The bottom of the steel pipe (4) is sealed, and the steel pipe (4) is provided with a liquid. The thermometer (3) is arranged in the liquid.

8. The heating apparatus for a concrete structural column according to claim 6, wherein The heating device further comprises a control module (5) and an intelligent monitoring system (6). The control module (5) is electrically connected with the signal output end of the thermometer (3). The intelligent monitoring system (6) is electrically connected with the control module (5). The intelligent monitoring system (6) is arranged in a mobile phone.

Images