Steam curing system

Abstract

The utility model provides a steam curing system, and relates to the technical field of concrete curing, the steam curing system comprises a water pump, a solar thermal collector, an air energy water heater, an intelligent boiler, a curing chamber and a plc controller, the solar heat collector and the air energy water heater are both connected with the intelligent boiler through a second connecting pipeline, and the intelligent boiler is used for heating water guided by the solar heat collector or the air energy water heater into steam and supplying the steam to the curing chamber through a steam pipeline; the solar heat collector and the air energy water heater which are connected in parallel are arranged to be connected with the intelligent boiler and connected with the plc, the air energy water heater can be communicated with the intelligent boiler when the water outlet temperature of the solar heat collector is reduced to a certain value or below, and therefore the temperature of water entering the intelligent boiler is increased; the purposes of saving fuel of the intelligent boiler and improving economic benefits are achieved.

Description

Technical Field

[0001] This invention relates to the field of concrete curing technology, specifically a steam curing system. Background Technology

[0002] Steam curing of precast concrete beams is carried out in three stages. The first stage is preliminary steam curing, which is conducted after the concrete is poured. The preliminary curing is moved forward and a mobile steam curing shed is used for steam curing with the formwork in place to accelerate the increase of concrete strength and thus meet the requirements for rapid demolding. The second and third stages are carried out in fixed intelligent temperature-controlled steam curing chambers. The bare beams are carried to the steam curing chambers one by one by a mobile base for relay steam curing. When the production capacity requirement is high, the preliminary curing can be connected by preheating a secondary high-temperature steam curing chamber. After curing to a certain strength or for a certain time in the secondary high-temperature steam curing chamber, the beams are sent to the preheated high-temperature steam curing chamber for further curing. At the same time, the heating and cooling rates of the steam curing chambers should be controlled to further increase the concrete strength to the design strength, effectively shortening the curing time and reducing steam curing energy consumption.

[0003] Currently, steam curing consumes a lot of energy by burning low-carbon and environmentally friendly biomass fuel. Although biomass fuel is an environmentally friendly material, its large-scale consumption is not conducive to economic benefits. Summary of the Invention

[0004] The purpose of this invention is to provide a steam curing system that addresses the problem of insufficient economic efficiency in conventional steam curing systems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The steam curing system includes a water pump, a solar collector, an air source water heater, an intelligent boiler, a curing chamber, and a PLC controller. The water pump is used to supply water to the solar collector and the air source water heater. The solar collector and the air source water heater are both connected to the intelligent boiler through a second connecting pipe. The intelligent boiler is used to heat the water introduced into the solar collector or the air source water heater into steam and supply it to the curing chamber through a steam pipe.

[0006] The solar collector and the air source water heater are connected in parallel, and the solar collector is assumed to supply water to the smart boiler. Temperature sensors are installed on both of the second connecting pipes. The solar collector, air source water heater, temperature sensors and smart boiler are all connected to the PLC controller. The PLC controller is used to switch the air source water heater to supply water to the smart boiler when the outlet water temperature of the solar collector is lower than the preset value.

[0007] The beneficial effects are: by setting up parallel solar collectors and air source water heaters connected to the smart boiler and then connecting them to a PLC controller, the air source water heater can be connected to the smart boiler when the outlet water temperature of the solar collector drops below a certain value, thereby increasing the temperature of the water entering the smart boiler, so as to save fuel and improve economic efficiency.

[0008] A further technical solution of the present invention is that an electric three-way valve is installed at the outlet end of the water pump, and the other two ends of the electric three-way valve are respectively connected to the inlet end of the solar collector and the inlet end of the air source water heater through two first connecting pipes.

[0009] A further technical solution of the present invention is that the electric three-way valve is also connected to the PLC controller for signal connection, and the PLC controller is used to control the electric three-way valve to supply water to the solar collector or air source water heater.

[0010] A further technical solution of the present invention is that a one-way valve is also installed on the two second connecting pipes. The one-way valve is used to prevent water vapor inside the smart boiler from flowing back to the solar collector or air source water heater.

[0011] A further technical solution of the present invention is that the steam pipeline includes a main pipeline and a secondary pipeline. The main pipeline is equipped with a pressure regulating valve, a throttle valve and a regulator for regulating steam flow. The main pipeline is also equipped with a shut-off valve as a main switch valve. The regulator is signal-connected to a PLC controller.

[0012] A further technical solution of the present invention is that the secondary pipe is placed longitudinally on the wall panel of the curing chamber below the base plate.

[0013] A further technical solution of the present invention is that the secondary pipe is provided with a steam nozzle with a diameter of 2 to 3 mm every 2 m in the part of the curing chamber.

[0014] A further technical solution of the present invention is that a temperature and humidity sensor is installed inside the curing room, and a temperature and humidity controller is installed outside the curing room, wherein the temperature and humidity sensor is connected to the temperature and humidity controller via signal connection.

[0015] A further technical solution of the present invention is that the temperature and humidity controller is connected to the PLC controller via a signal, and the temperature and humidity sensor can send the temperature and humidity conditions inside the curing room to the PLC controller via the temperature and humidity controller. The PLC controller controls the regulator to adjust the steam flow rate of the main pipeline according to the temperature and humidity conditions inside the curing room.

[0016] The beneficial effects are: the temperature and humidity sensor inside the curing chamber enables the PLC controller to adjust the steam flow rate according to the heating rate inside the curing chamber, so that the temperature inside the curing chamber can be stabilized within a certain range, thereby reducing steam curing energy consumption and shortening curing time.

[0017] A further technical solution of the present invention is that the intelligent boiler is a biomass boiler, using biomass pellets made from wood chips and straw as fuel. Attached Figure Description

[0018] Figure 1 This is a system diagram of the present invention.

[0019] In the diagram: 1-Water pump, 2-Solar collector, 3-Air source heat pump water heater, 4-Intelligent boiler, 5-Cure room, 6-PLC controller. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified. In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a steam curing system includes a water pump 1, a solar collector 2, an air source water heater 3, a smart boiler 4, a curing chamber 5, and a PLC controller 6. The water pump 1 is equipped with an electric three-way valve at its outlet. The other two ends of the electric three-way valve are connected to the inlet of the solar collector 2 and the air source water heater 3 respectively via two first connecting pipes. The hot water outlets of the solar collector 2 and the air source water heater 3 are connected to the smart boiler 4 via two second connecting pipes. Each second connecting pipe is equipped with a one-way valve and a temperature sensor. Hot water from either the solar collector 2 or the air source water heater 3 can flow to the smart boiler 4 through the one-way valve, and water inside the smart boiler 4 cannot flow back to the solar collector 2 or the air source water heater 3 through the one-way valve. The smart boiler 4 heats the water introduced by the solar collector 2 or the air source water heater 3 into steam and transports it to the curing chamber 5 via steam pipes for steam curing of the concrete components inside the curing chamber 5.

[0024] In this embodiment, the intelligent boiler 4 is a biomass boiler that uses biomass pellets made from wood chips and straw as fuel. This not only makes the entire process clean and low-pollution, but also saves costs. In a specific embodiment, a 0.8T steam boiler can supply the steam consumption of three curing chambers on a production line at a relatively low cost.

[0025] The steam pipeline includes a main pipeline and a secondary pipeline. The main pipeline is equipped with a pressure regulating valve, a throttle valve, and a regulator to adjust the steam flow rate, and is also equipped with a shut-off valve as the main switch valve. The secondary pipeline is placed longitudinally on the wall panel of the curing chamber 5 below the base plate. The portion of the secondary pipeline inside the curing chamber 5 has a steam nozzle with a diameter of 2-3 mm every 2 m. A temperature and humidity sensor is installed inside the curing chamber 5, and a temperature and humidity controller is installed outside the curing chamber 5. The temperature and humidity sensor is connected to the temperature and humidity controller, and the temperature and humidity controller is connected to the PLC controller 6. The temperature and humidity sensor can send the temperature and humidity information inside the curing chamber 5 to the PLC controller 6 via the temperature and humidity controller. The PLC controller 6 controls the regulator to adjust the steam flow rate of the main pipeline based on the temperature and humidity information inside the curing chamber 5, thereby maintaining the temperature and humidity inside the curing chamber 5 at the preset values.

[0026] The solar collector 2, air source water heater 3, and smart boiler 4 are all connected to the PLC controller 6. The PLC controller 6 can, through a preset program, shut down the solar collector 2 and switch the air source water heater 3 to supply water to the smart boiler 4 when the outlet water temperature of the solar collector 2 is lower than the set value. By increasing the temperature of the water entering the smart boiler 4 through the solar collector 2 and air source water heater 3, fuel can be saved and costs can be further reduced.

[0027] During use, the heating rate is first set on the PLC controller 6. The temperature and humidity sensor inside the curing chamber 5 transmits the heating rate inside the curing chamber 5 to the PLC controller 6 via the temperature and humidity controller. The PLC controller 6 compares the obtained heating rate inside the curing chamber 5 with the set value, and adjusts the regulator according to the comparison result to regulate the steam flow rate, so that the temperature inside the curing chamber 5 can be stabilized within a certain range, thereby reducing steam curing energy consumption and shortening curing time.

[0028] In this invention, by setting up a parallel solar collector 2 and an air source water heater 3 connected to a smart boiler 4 and then connecting them to a PLC controller 6, the air source water heater 3 can be connected to the smart boiler 4 when the outlet water temperature of the solar collector 2 drops below a certain value. This increases the temperature of the water entering the smart boiler 4, thereby saving fuel and improving economic efficiency. Furthermore, the temperature and humidity sensor inside the curing chamber 5 enables the PLC controller 6 to adjust the steam flow rate according to the heating rate inside the curing chamber 5, so that the temperature inside the curing chamber 5 can be stabilized within a certain range, thereby reducing steam curing energy consumption and shortening curing time.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A steam curing system, characterized in that, The system includes a water pump (1), a solar collector (2), an air source water heater (3), a smart boiler (4), a curing room (5), and a PLC controller (6). The water pump (1) is used to supply water to the solar collector (2) and the air source water heater (3). The solar collector (2) and the air source water heater (3) are both connected to the smart boiler (4) through a second connecting pipe. The smart boiler (4) is used to heat the water introduced by the solar collector (2) or the air source water heater (3) into steam and supply it to the curing room (5) through a steam pipe. The solar collector (2) and the air source water heater (3) are connected in parallel, and the solar collector (2) is assumed to supply water to the intelligent boiler (4). Temperature sensors are installed on both of the second connecting pipes. The solar collector (2), the air source water heater (3), the temperature sensors and the intelligent boiler (4) are all connected to the PLC controller (6). The PLC controller (6) is used to switch the air source water heater (3) to supply water to the intelligent boiler (4) when the outlet water temperature of the solar collector (2) is lower than the preset value.

2. The steam curing system according to claim 1, characterized in that, The water pump (1) is equipped with an electric three-way valve at its outlet end. The other two ends of the electric three-way valve are connected to the inlet end of the solar collector (2) and the inlet end of the air source water heater (3) through two first connecting pipes, respectively.

3. The steam curing system according to claim 2, characterized in that, The electric three-way valve is also connected to the PLC controller (6) via signal. The PLC controller (6) is used to control the electric three-way valve to supply water to the solar collector (2) or the air source water heater (3).

4. The steam curing system according to claim 1, characterized in that, Two second connecting pipes are also equipped with one-way valves, which are used to prevent water vapor inside the smart boiler (4) from flowing back to the solar collector (2) or the air source water heater (3).

5. A steam curing system according to claim 4, characterized in that, The steam pipeline includes a main pipeline and a secondary pipeline. The main pipeline is equipped with a pressure regulating valve, a throttle valve and a regulator to regulate the steam flow. The main pipeline is also equipped with a shut-off valve as a main switch valve. The regulator is connected to the PLC controller (6) via signal.

6. A steam curing system according to claim 5, characterized in that, The secondary pipe is placed longitudinally on the wall panel of the curing chamber (5) below the base plate.

7. A steam curing system according to claim 5, characterized in that, The secondary pipeline in the curing chamber (5) is provided with a steam nozzle with a diameter of 2 to 3 mm every 2 m.

8. A steam curing system according to claim 1, characterized in that, The curing room (5) is equipped with a temperature and humidity sensor inside, and a temperature and humidity controller is installed outside the curing room (5). The temperature and humidity sensor is connected to the temperature and humidity controller via signal.

9. A steam curing system according to claim 8, characterized in that, The temperature and humidity controller is connected to the PLC controller (6) via signal. The temperature and humidity sensor can send the temperature and humidity inside the curing room (5) to the PLC controller (6) via the temperature and humidity controller. The PLC controller (6) controls the regulator to adjust the steam flow of the main pipeline according to the temperature and humidity inside the curing room (5).

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