Solar energy and air energy steam curing system for precast beam

Abstract

The invention belongs to the technical field of precast beam curing, and particularly relates to a solar energy and air energy steam curing system for precast beams. Comprising a steam curing room, a solar heating module, an air energy heating module, a water storage container and a heat supply pipeline, the solar heating module and the water storage container are connected to form a first circulating pipeline, and the air energy heating module and the water storage container are connected to form a second circulating pipeline; a pedestal aisle is reserved in the middle of the steam curing room, and heat dissipation plates are arranged on the two sides of the pedestal aisle; the heat supply pipeline comprises a heat supply main pipe, heat supply branch pipes and a water spraying pipe, one end of the heat supply main pipe is connected with the water storage container, the other end of the heat supply main pipe is divided into two heat supply branch pipes, and each heat supply branch pipe is connected with the water spraying pipe transversely arranged above the heat dissipation plate; the solar heating module and the air energy heating module cooperatively heat, when the solar heating module is sufficient in heat, the air energy heating module stops working, after the air energy heating module heats water in the water storage container to the target temperature, the air energy heating module stops working, and the solar heating energy efficiency is maximized.

Description

Technical Field

[0001] The invention belongs to the technical field of prefabricated beam curing, and in particular relates to a prefabricated beam solar energy plus air energy steam curing system. Background Art

[0002] During the construction of precast beams, natural curing is required for 7 days. Prestressing can only be carried out after the strength and elastic modulus meet the design requirements. If the curing time is too long, it will seriously affect the efficiency of beam making. The large amount of hydration heat generated within a few days after concrete pouring will cause the internal temperature of the concrete to rise, and the large temperature difference between the inside and the outside will cause cracks in the concrete. As a key process that affects the quality of the entity and the turnover of the pedestal, whether the curing of precast beams can make full use of the "golden period" of rapid improvement of the initial strength of concrete has become the key to accelerating the process conversion of the production area, fully releasing production capacity, and improving the quality of the entity. Traditional precast beam curing uses open-air artificial watering and self-propelled spray curing, which is prone to problems such as leakage, uncontrollable curing time, slow increase in concrete strength and elastic modulus, and difficulty in supervision. In order to solve the above problems, the precast beam yard began to use steam for curing, which can accelerate the improvement of concrete strength and elastic modulus and eliminate surface cracks.

[0003] At present, steam curing mainly adopts burning biomass pellet fuel, natural gas, fuel oil and electric heating, which has the following problems: (1) Boilers are special pressure vessels, which have safety hazards; (2) The maintenance cost is extremely high; (3) It is not environmentally friendly; (4) The humidity in the steam curing room is not enough, and cold water pipe spray is used to increase the humidity and cool down. Cold water pipe spray is also used to cool down. Spraying cold water on the beam surface will cause cracks on the beam surface; (5) The thermal insulation effect is not good;

[0004] (6) Water cannot be recycled and the water consumption is high.

[0005] In summary, it is necessary to develop a steam curing system that is easy to operate, safe, has low maintenance cost, is green and environmentally friendly, has high humidity, good thermal insulation, and saves water. Summary of the invention

[0006] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0007] The present invention provides the following technical solution: a prefabricated beam solar energy and air energy steam curing system, comprising a steam curing room, a solar energy heating module, an air energy heating module, a water storage container and a heating pipeline;

[0008] The solar energy heating module is connected to the water storage container to form a first circulation pipeline, and the air energy heating module is connected to the water storage container to form a second circulation pipeline;

[0009] A temperature sensor is provided in the water storage container, and the temperature sensor is connected to the control unit of the air energy heating module. The control unit determines whether the water temperature in the water storage container fed back by the temperature sensor is higher than the set temperature threshold. When the temperature is higher than the temperature threshold, the control unit shuts down the air energy heating module, and when the temperature is lower than the temperature threshold, the air energy heating module is turned on.

[0010] A pedestal aisle is reserved in the middle of the steaming room. Heat dissipation plates are arranged on both sides of the pedestal aisle within the height range of the prefabricated beams. The heat dissipation plates are inclined from top to bottom toward the pedestal aisle.

[0011] The heating pipeline includes a heating main pipe, a heating branch pipe and a water sprinkling pipe. The heating main pipe is connected to a water supply pressure pump. One end of the heating main pipe is connected to a water storage container and the other end is divided into two heating branch pipes. Each heating branch pipe is connected to a water sprinkling pipe horizontally placed above the heat sink. The ends of the water sprinkling pipes are closed and water outlet holes are spaced apart on the pipe wall of the water sprinkling pipe. After the water from the water sprinkling pipe flows onto the heat sink, the steam is used to cure the precast beams.

[0012] A cooling exhaust fan is installed in the steaming room.

[0013] Furthermore, a water collecting tank is provided in the steaming room, the bottom of the heat sink is inserted into the water collecting tank, the water outlet of the water collecting tank is connected to the water storage tank through a primary recovery water pipe, the water outlet of the water storage tank is connected to the water filtration and purification device through a secondary recovery water pipe, the water outlet of the water filtration and purification device is connected to the water storage container through a tertiary recovery water pipe, and the secondary recovery water pipe is connected to a tail heat recovery water pump.

[0014] Further, the water storage container includes a No. 1 heat-insulating water storage tank and a No. 2 heat-insulating water storage tank which are connected;

[0015] The solar heating module includes a vacuum tube solar collector group, a solar heating circulation water pump, a solar heating circulation water outlet pipe and a solar heating circulation water inlet pipe; the vacuum tube solar collector group, the solar heating circulation water outlet pipe, the No. 1 thermal insulation water storage tank, the solar heating circulation water inlet pipe and the vacuum tube solar collector group are sequentially connected to form a first circulation pipeline, and the solar heating circulation water inlet pipe is connected to the solar heating circulation water pump;

[0016] The air energy heating module includes a high-temperature air energy heat pump, an air energy heating circulating water pump, an air energy heating circulating water inlet pipe and an air energy heating circulating water outlet pipe. The high-temperature air energy heat pump, the air energy heating circulating water outlet pipe, the second thermal insulation water storage tank, the air energy heating circulating water inlet pipe and the high-temperature air energy heat pump are sequentially connected to form a second circulation pipeline; the air energy heating circulating water inlet pipe is connected to the air energy heating circulating water pump;

[0017] The No. 1 thermal insulation water storage tank is connected with a tap water inlet pipe.

[0018] Furthermore, the vacuum tube solar collector group is installed on the roof of the steam-curing room.

[0019] Furthermore, a waterproof curtain is provided on one side of the water sprinkling pipe facing the prefabricated beam.

[0020] Furthermore, temperature sensors are installed in both the No. 1 thermal insulation water storage tank and the No. 2 thermal insulation water storage tank.

[0021] Furthermore, the steaming room includes a steel frame and a polyurethane insulation board.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] The present invention provides a prefabricated beam solar energy plus air energy steaming system, in which the solar energy heating module and the air energy heating module cooperate to heat, and the air energy heating module stops when the solar energy heating module has sufficient heat, and the air energy heating module stops after the air energy heating module heats the water in the water storage container to the target temperature, thereby maximizing the solar energy heating efficiency. A tail heat recovery system is provided, and the tail hot water flowing down from the heat sink is collected through a water collection tank and introduced into a water storage tank, and then filtered and returned to the water storage container, and the hot water is recycled, saving energy consumption and water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0026] In the figure: 1-prefabricated beam; 2-pedestal; 3-heat sink; 4-waterproof curtain; 5-sprinkling pipe; 6-cooling exhaust fan; 7-steaming room; 8-water collecting tank; 9-vacuum tube solar collector group; 10-heating branch pipe; 11-water supply pressure pump; 12-heating main pipe; 13-solar heating circulation outlet pipe; 14-No. 2 insulation water storage tank; 15-air energy heating circulation outlet pipe; 16-high temperature air energy heat pump; 17-air energy heating circulation water pump; 18-air energy heating circulation water inlet pipe; 19-No. 1 insulation water storage tank; 20-tap water inlet pipe; 21-water filtration and purification device; 22-tail heat recovery water pump; 23-secondary recovery water pipe; 24-water storage tank; 25-first-level recovery water pipe; 26-solar heating circulation inlet pipe; 27-solar heating circulation water pump; 28-third-level recovery water pipe. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] like Figure 1 , Figure 2 As shown: a prefabricated beam solar energy and air energy steaming system, including a steaming room 7, a solar energy heating module, an air energy heating module, a water storage container and a heating pipeline; the solar energy heating module is connected to the water storage container to form a first circulation pipeline, and the air energy heating module is connected to the water storage container to form a second circulation pipeline; a temperature sensor is arranged in the water storage container, and the temperature sensor is connected to the control unit of the air energy heating module, and the control unit determines whether the water temperature in the water storage container fed back by the temperature sensor is higher than the set temperature threshold. When it is higher than the temperature threshold, the control unit shuts down the air energy heating module, and when it is lower than the temperature threshold, the air energy heating module is turned on.

[0029] A pedestal aisle is reserved in the middle of the steaming and curing room 7. Heat sinks 3 are arranged on both sides of the pedestal aisle within the height range of the prefabricated beams. The heat sinks 3 are inclined from top to bottom toward the pedestal aisle. The heating pipeline includes a heating main pipe 12, a heating branch pipe 10 and a water spray pipe 5. A water supply pressure pump 11 is connected to the heating main pipe 12. One end of the heating main pipe 12 is connected to a water storage container, and the other end is divided into two heating branch pipes 10. Each heating branch pipe 10 is connected to a water spray pipe 5 horizontally placed above the heat sink 3. The ends of the water spray pipe 5 are closed, and water outlet holes are spaced apart on the pipe wall of the water spray pipe 5. Hot water is sprayed onto the heat sink 3 by high pressure to dissipate heat and form water vapor to cure the prefabricated beams.

[0030] The heat sink 3 is made of stainless steel and is wavy in shape. High-temperature hot water flows to the top of the stainless steel corrugated heat sink through the water spray pipe 5, and releases heat and emits water vapor through the heat sink 3.

[0031] The side of the watering pipe 5 facing the prefabricated beam is covered with a waterproof curtain 4 to prevent high-temperature hot water from spraying onto the prefabricated beam.

[0032] A cooling exhaust fan 6 is installed in the steaming room 7, and the temperature in the steaming room 7 is adjusted by controlling the water supply of the water supply pressure water pump 11 and the cooling exhaust fan 6.

[0033] The steam curing room 7 includes a steel frame and a polyurethane insulation board; the steel frame is made of channel steel and angle steel frame, and the steel frame mainly increases the bearing capacity and integrity of the steam curing room 7. The steel frame is enclosed by a polyurethane insulation board to reduce heat loss and increase the insulation effect of the steam curing room 7.

[0034] A water collecting tank 8 is provided in the steaming room 7, and the bottom of the heat sink 3 is inserted into the water collecting tank 8. The water outlet of the water collecting tank 8 is connected to the water reservoir 24 through the primary water recovery pipe 25, and the water outlet of the water reservoir 24 is connected to the water filtration and purification device 21 through the secondary water recovery pipe 23. The water outlet of the water filtration and purification device 21 is connected to the water storage container through the tertiary water recovery pipe 28, and the secondary water recovery pipe 23 is connected to the tail heat recovery water pump 22. When the water depth in the water reservoir 24 exceeds 3 / 4 of the height of the water reservoir, the tail heat recovery water pump 22 starts to pump water. The tail hot water is purified by the filtration and purification device 21 and then flows back to the water storage container for reuse.

[0035] The water storage container comprises a No. 1 heat-insulated water storage tank 19 and a No. 2 heat-insulated water storage tank 14 which are connected to each other; temperature sensors are installed in both the No. 1 heat-insulated water storage tank 19 and the No. 2 heat-insulated water storage tank 14.

[0036] The solar heating module includes a vacuum tube solar collector group 9, a solar heating circulation water pump 27, a solar heating circulation water outlet pipe 13 and a solar heating circulation water inlet pipe 26. The vacuum tube solar collector group 9, the solar heating circulation water outlet pipe 13, the No. 1 thermal insulation water storage tank 19, the solar heating circulation water inlet pipe 26 and the vacuum tube solar collector group 9 are sequentially connected to form a first circulation pipeline, and the solar heating circulation water inlet pipe 26 is connected to the solar heating circulation water pump 27; the hot water heated by the vacuum tube solar collector group 9 enters the No. 1 thermal insulation water storage tank 19 through the solar heating circulation water outlet pipe 13; the solar heating circulation water pump 27 pumps the water in the No. 1 thermal insulation water storage tank 19 into the vacuum tube solar collector group 9 for heating.

[0037] The control system of the solar heating module is connected to the temperature sensor of the vacuum tube solar collector group 9, the solar heating circulating water pump 27, and the temperature sensor in the No. 1 thermal insulation water tank 19 through signal lines. The control system receives the water temperature in the No. 1 thermal insulation water tank 19 as T1 and the water temperature in the vacuum tube solar collector group 9 as T2. When T2-T1≥m*℃ (the value of m is adjustable), the solar heating circulating water pump 27 is started to force water circulation; when T2-T1≤m*℃ (the value of m is adjustable), the solar heating circulating water pump 27 is turned off, and the water in the vacuum tube solar collector group 9 is heated.

[0038] The air energy heating module includes a high-temperature air energy heat pump 16, an air energy heating circulating water pump 17, an air energy heating circulating water inlet pipe 18 and an air energy heating circulating water outlet pipe 15. The high-temperature air energy heat pump 16, the air energy heating circulating water outlet pipe 15, the No. 2 thermal insulation water tank 14, the air energy heating circulating water inlet pipe 18 and the high-temperature air energy heat pump 16 are connected in sequence to form a second circulation pipeline; the air energy heating circulating water inlet pipe 18 is connected to the air energy heating circulating water inlet pipe 18; the air energy heating circulating water pump 17 draws the water in the No. 2 thermal insulation water tank 14 into the high-temperature air energy heat pump 16 for heating.

[0039] The first heat-insulating water storage tank 19 is connected with a tap water inlet pipe 20, and tap water is added when the water depth of the first heat-insulating water storage tank 19 is lower than 3 / 4 of the height of the heat-insulating tank.

[0040] The vacuum tube solar collector group 9 is installed on the roof of the steam-curing room 7.

[0041] The inner tanks of the No. 1 thermal insulation water storage tank 19 and the No. 2 thermal insulation water storage tank 14 are made of SUS304 / 2B high-quality stainless steel plate, the middle layer is polyurethane integral mechanical foam insulation material, and the external packaging is 201 stainless steel plate. The heating branch pipe 10, the heating main pipe 12, the solar heating circulation water outlet pipe 13, the air energy heating circulation water outlet pipe 15, the air energy heating circulation water inlet pipe 18, the secondary recovery water pipe 23, the primary recovery water pipe 25, the solar heating circulation water inlet pipe 26, and the tertiary recovery water pipe 28 are wrapped with polyurethane integral mechanical foam insulation material for insulation.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solar and air energy steam curing system for prefabricated beams, characterized in that: It comprises a steaming room (7), a solar energy heating module, an air energy heating module, a water storage container and a heating pipeline; The solar energy heating module is connected to the water storage container to form a first circulation pipeline, and the air energy heating module is connected to the water storage container to form a second circulation pipeline; A temperature sensor is provided in the water storage container, and the temperature sensor is connected to the control unit of the air energy heating module. The control unit determines whether the water temperature in the water storage container fed back by the temperature sensor is higher than the set temperature threshold. When the temperature is higher than the temperature threshold, the control unit shuts down the air energy heating module, and when the temperature is lower than the temperature threshold, the air energy heating module is turned on. A pedestal aisle is reserved in the middle of the steaming room (7), and heat dissipation plates (3) are arranged on both sides of the pedestal aisle within the height range of the prefabricated beams, and the heat dissipation plates (3) are inclined from top to bottom toward the pedestal aisle; The heating pipeline comprises a heating main pipe (12), a heating branch pipe (10) and a water sprinkling pipe (5). The heating main pipe (12) is connected to a water supply pressure pump (11). One end of the heating main pipe (12) is connected to a water storage container and the other end is divided into two heating branch pipes (10). Each heating branch pipe (10) is connected to a water sprinkling pipe (5) disposed horizontally above a heat sink (3). The ends of the water sprinkling pipe (5) are closed. Water outlet holes are spaced apart on the pipe wall of the water sprinkling pipe (5). After the water outlet of the water sprinkling pipe (5) flows onto the heat sink (3), steam is used to cure the prefabricated beams. A cooling exhaust fan (6) is installed in the steaming room (7).

2. The prefabricated beam solar energy and air energy steam curing system according to claim 1, characterized in that: A water collecting tank (8) is arranged in the steaming room (7), the bottom of the heat sink (3) is inserted into the water collecting tank (8), the water outlet of the water collecting tank (8) is connected to the water reservoir (24) through a primary water recovery pipe (25), the water outlet of the water reservoir (24) is connected to the water filtering and purifying device (21) through a secondary water recovery pipe (23), the water outlet of the water filtering and purifying device (21) is connected to the water storage container through a tertiary water recovery pipe (28), and the secondary water recovery pipe (23) is connected to a tail heat recovery water pump (22).

3. The prefabricated beam solar energy and air energy steam curing system according to claim 2, characterized in that: The water storage container comprises a first heat-insulating water storage tank (19) and a second heat-insulating water storage tank (14) which are connected to each other; The solar heating module comprises a vacuum tube solar thermal collector group (9), a solar heating circulating water pump (27), a solar heating circulating water outlet pipe (13) and a solar heating circulating water inlet pipe (26); the vacuum tube solar thermal collector group (9), the solar heating circulating water outlet pipe (13), a No. 1 heat preservation water storage tank (19), the solar heating circulating water inlet pipe (26) and the vacuum tube solar thermal collector group (9) are sequentially connected to form a first circulation pipeline, and the solar heating circulating water inlet pipe (26) is connected to the solar heating circulating water pump (27); The air energy heating module comprises a high-temperature air energy heat pump (16), an air energy heating circulating water pump (17), an air energy heating circulating water inlet pipe (18) and an air energy heating circulating water outlet pipe (15); the high-temperature air energy heat pump (16), the air energy heating circulating water outlet pipe (15), a second heat preservation water storage tank (14), the air energy heating circulating water inlet pipe (18) and the high-temperature air energy heat pump (16) are sequentially connected to form a second circulation pipeline; the air energy heating circulating water inlet pipe (18) is connected to the air energy heating circulating water pump (17); The first heat-insulating water storage tank (19) is connected with a tap water inlet pipe (20).

4. The solar and air energy steam curing system for prefabricated beams according to claim 3 is characterized in that: The vacuum tube solar collector group (9) is installed on the roof of the steaming room (7).

5. The solar and air energy steam curing system for prefabricated beams according to claim 1, characterized in that: The side of the water sprinkling pipe (5) facing the prefabricated beam is covered with a waterproof curtain (4).

6. The solar and air energy steam curing system for prefabricated beams according to claim 4, characterized in that: The first heat-insulating water storage tank (19) and the second heat-insulating water storage tank (14) are both equipped with temperature sensors.

7. The solar and air energy steam curing system for prefabricated beams according to claim 1, characterized in that: The steaming room (7) comprises a steel frame and a polyurethane insulation board.

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