CN114643636B - Hot gas mutual conductance system for concrete member maintenance and control method thereof - Google Patents
Hot gas mutual conductance system for concrete member maintenance and control method thereof Download PDFInfo
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- CN114643636B CN114643636B CN202210242041.6A CN202210242041A CN114643636B CN 114643636 B CN114643636 B CN 114643636B CN 202210242041 A CN202210242041 A CN 202210242041A CN 114643636 B CN114643636 B CN 114643636B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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Abstract
The application relates to a hot gas transconductance system for concrete member maintenance and a control method thereof; the system comprises: at least two curing kilns, an air inlet main pipe, an air outlet main pipe and an air guide main pipe; the curing kiln is a concrete member curing kiln and/or a pre-curing kiln; one end of the air guide main pipe is connected with the air inlet main pipe, and the other end of the air guide main pipe is connected with the air outlet main pipe; from the exhaust branch pipe of any curing kiln, the exhaust main pipe, the air guide main pipe and the air inlet main pipe are sequentially passed through to the air inlet branch pipe of the other curing kiln, and the passed pipeline forms a hot air mutual guide pipeline; and a mutual conductance control valve group is arranged on the hot gas mutual conductance pipeline and used for controlling the circulation or blocking of hot gas between the two curing kilns. According to the scheme, when the temperature rising and reducing requirements exist among different curing spaces at the same time, the dynamic mutual conductance of hot gas can be realized, and the external air inlet and heat supply time is reduced; the waste heat is fully utilized, the total heat supply is reduced, and the total maintenance cost of the concrete member is reduced.
Description
Technical Field
The application relates to the technical field of concrete member production, in particular to a hot gas transconductance system for concrete member maintenance and a control method thereof.
Background
At present, a plurality of problems are still common to be solved in the process of steaming in the automatic production of the assembled concrete member. After curing in the curing kiln is completed, the waste heat in the kiln is naturally cooled in the kiln and cannot be discharged in time. After the curing of the curing kiln is finished, the waste heat in the kiln cannot be reused, and the energy consumption is seriously wasted. The hot air in each curing space can not circulate mutually, the temperature in each curing space needs to be increased by independently supplying air from outside, and the mutual dynamic complementary temperature adjustment mechanisms among the kiln inner row and row, the vertical kiln and vertical kiln, the vertical kiln and pre-curing kiln and between the kiln and other heat-requiring units are lacked.
In the related technology, the waste heat in the whole curing process cannot be self-discharged and reused, and a temperature regulation mechanism with mutual complementation is also lacking in each curing space, so that the curing energy consumption is high and the economic benefit is lower.
Disclosure of Invention
In order to overcome the problems in the related art to at least a certain extent, the application provides a hot air transconductance system for curing a concrete member and a control method thereof.
According to a first aspect of an embodiment of the present application, there is provided a hot gas transconductance system for curing a concrete member, comprising: at least two curing kilns, an air inlet main pipe, an air outlet main pipe and an air guide main pipe; the type of the curing kiln is a concrete member curing kiln and/or a pre-curing kiln;
one end of the curing kiln is connected with the air inlet main pipe through an air inlet branch pipe, and the other end of the curing kiln is connected with the air outlet main pipe through an air outlet branch pipe; one end of the air guide main pipe is connected with the air inlet main pipe, and the other end of the air guide main pipe is connected with the air outlet main pipe;
from the exhaust branch pipe of any curing kiln, the exhaust main pipe, the air guide main pipe and the air inlet main pipe are sequentially passed through to reach the air inlet branch pipe of the other curing kiln, and the passed pipelines form a hot air mutual guide pipeline; and a mutual conductance control valve group is arranged on the hot gas mutual conductance pipeline and used for controlling the circulation or blocking of hot gas between the two curing kilns.
Further, the transconductance control valve group includes: an exhaust branch pipe electromagnetic valve arranged on an exhaust branch pipe of one curing kiln, an air guide main pipe electromagnetic valve arranged on the air guide main pipe, and an air inlet branch pipe electromagnetic valve arranged on an air inlet branch pipe of the other curing kiln;
the air guide main pipe is also provided with an axial flow fan, and the air flow direction of the axial flow fan during working is as follows: from the exhaust main pipe to the intake main pipe.
Further, an external heat supply inlet is arranged on the air inlet main pipe;
the pipeline passing through from the external heat supply inlet to any air inlet branch pipe of the curing kiln forms an external heat supply pipeline; and the external heat supply pipeline is provided with a heat supply control valve group for controlling the circulation or blocking of hot gas in the external heat supply pipeline.
Further, the heating control valve group includes: the air inlet main pipe electromagnetic valve is arranged on the air inlet main pipe, and the air inlet branch pipe electromagnetic valve is arranged on the air inlet branch pipe of the corresponding curing kiln.
Further, a heat discharging opening is formed in the air inlet main pipe;
from any exhaust branch pipe of the curing kiln, the curing kiln sequentially passes through the exhaust main pipe, the air guide main pipe and the air inlet main pipe to reach the heat discharging opening, and the passing pipeline forms an exhaust cooling pipeline; and the exhaust cooling pipeline is provided with a cooling control valve group for controlling circulation or blocking of hot gas in the exhaust cooling pipeline.
Further, the system also includes an exhaust stack and an exhaust stack main; one end of the exhaust chimney main pipe is connected with a heat discharging opening on the air inlet main pipe; the exhaust chimney is arranged at the other end of the exhaust chimney main pipe;
and an electromagnetic valve of the main pipe of the exhaust chimney is arranged on the main pipe of the exhaust chimney.
Further, the cooling control valve group includes: the exhaust branch pipe electromagnetic valve is arranged on the exhaust branch pipe of the corresponding curing kiln, the air guide main pipe electromagnetic valve is arranged on the air guide main pipe, and the exhaust chimney main pipe electromagnetic valve is arranged on the air guide main pipe.
According to a second aspect of embodiments of the present application, there is provided a method of controlling hot gas conductance for curing a concrete member, the method being applied to a system as described in any one of the embodiments above; the method comprises the following steps:
obtaining target temperatures and current temperatures of all curing kilns;
judging the heat demand state of each curing kiln according to the target temperature and the current temperature of the curing kiln: when the target temperature is higher than the current temperature, the heat demand state of the curing kiln is the heating demand; when the target temperature is less than the current temperature, the heat demand state of the curing kiln is the cooling demand;
if the curing kiln with the temperature rising requirement and the curing kiln with the temperature reducing requirement exist at the same time, entering a hot gas mutual conduction mode: the control valve group on the control target hot gas interconnecting pipeline is opened, and other control valves are all closed; wherein, the target hot gas mutual conductance pipeline is: and a hot gas mutual guide pipeline between the curing kiln with the temperature reduction requirement and the curing kiln with the temperature increase requirement.
Further, the method further comprises:
if only curing kilns with heating requirements exist, entering an external heating mode: the control valve group on the control target heating pipeline is opened, and other control valves are all closed; wherein, the target heating pipeline is: an external heat supply pipeline between the external heat supply inlet and the curing kiln with the heating requirement;
if only curing kilns with cooling requirements exist, entering an exhaust cooling mode: the control valve group on the control target cooling pipeline is opened, and other control valves are all closed; wherein, the target cooling pipeline is: an exhaust cooling pipeline from the curing kiln to the heat discharging opening;
if the target temperature of all curing kilns is equal to the current temperature, all control valves are closed.
Further, the method further comprises:
under the hot gas mutual conductance mode, when the curing kiln with the temperature rising requirement is detected to reach the target temperature, and the curing kiln with the temperature lowering requirement does not reach the target temperature, the air inlet branch pipe electromagnetic valve corresponding to the curing kiln with the temperature rising requirement is automatically closed, and the curing kiln with the temperature lowering requirement is controlled to enter the exhaust cooling mode;
under the hot gas mutual conductance mode, when the curing kiln with the temperature-reducing requirement is detected to reach the target temperature, and the curing kiln with the temperature-increasing requirement does not reach the target temperature, the electromagnetic valve of the exhaust branch pipe corresponding to the curing kiln with the temperature-reducing requirement is automatically closed, and the curing kiln with the temperature-increasing requirement is controlled to enter an external heat supply mode.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the scheme, when the heat and the temperature are increased and decreased simultaneously between different curing spaces, the dynamic mutual conductance of hot gas can be realized, so that dynamic connection is established between the independent curing spaces, and the heat and the temperature are increased more flexibly; external heat supply is not required in the heating process, and the internal dynamic adjustment is adopted, so that the external air inlet heat supply time is reduced; the waste heat is fully utilized, the total heat supply is reduced, and the total maintenance cost of the concrete member is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic diagram of a pipeline structure of a hot gas transconductance system for curing a concrete member according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a concrete structure of a hot air transconductance system for curing a concrete member according to an embodiment of the present application.
FIG. 3 is a logic diagram of control of hot gas conductance for curing a concrete member in accordance with an embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of systems and methods that are consistent with aspects of the application as detailed in the accompanying claims.
Fig. 1 is a schematic diagram illustrating a construction of a hot air transconductance system for curing a concrete member according to an exemplary embodiment. The system comprises: at least two curing kilns, an air inlet main pipe 33, an air outlet main pipe 47 and an air guide main pipe 31; the curing kiln is of the type of a concrete member curing kiln and/or a pre-curing kiln.
One end of the curing kiln is connected with the air inlet main pipe 33 through an air inlet branch pipe 25, and the other end of the curing kiln is connected with the air outlet main pipe 47 through an air outlet branch pipe 1; one end of the air guide main pipe 31 is connected to the air intake main pipe 33, and the other end is connected to the air exhaust main pipe 47.
From the exhaust branch pipe of any curing kiln, the exhaust main pipe 47, the air guide main pipe 31 and the air inlet main pipe 33 sequentially pass through to reach the air inlet branch pipe of the other curing kiln, and the passing pipelines form hot air mutual guide pipelines; and a mutual conductance control valve group is arranged on the hot gas mutual conductance pipeline and used for controlling the circulation or blocking of hot gas between the two curing kilns.
According to the scheme, when the heat and the temperature are increased and decreased simultaneously between different curing spaces, the dynamic mutual conductance of hot gas can be realized, so that dynamic connection is established between the independent curing spaces, and the heat and the temperature are increased more flexibly; external heat supply is not required in the heating process, and the internal dynamic adjustment is adopted, so that the external air inlet heat supply time is reduced; the waste heat is fully utilized, the total heat supply is reduced, and the total maintenance cost of the concrete member is reduced.
The scheme of the application is expanded and explained below by combining with specific application scenes.
As shown in fig. 2, in some embodiments of the present application, the whole concrete member curing waste heat air recycling system includes: kiln body part, heat supply air inlet part, air guide exhaust part.
The kiln body part comprises: a left concrete member vertical curing kiln body 17, a right concrete member vertical curing kiln body 41 and a pre-curing kiln 40.
The heat supply air inlet part includes: the inlet main pipe solenoid valve 24 controls the external heating steam to enter the inlet main pipe 33. The left kiln row 1 air inlet branch pipe electromagnetic valve 26, the left kiln row 2 air inlet branch pipe electromagnetic valve 28 and the left kiln row 3 air inlet branch pipe electromagnetic valve 30 respectively control the heat supply steam to enter the corresponding row of curing spaces in the left kiln through the left kiln row 1 air inlet branch pipe 25, the left kiln row 2 air inlet branch pipe 27 and the left kiln row 3 air inlet branch pipe 29. The right kiln 1 st row of air inlet branch pipe electromagnetic valves 35, the right kiln 2 nd row of air inlet branch pipe electromagnetic valves 37 and the right kiln 3 rd row of air inlet branch pipe electromagnetic valves 39 respectively control the heat supply steam to enter the curing space of the corresponding row of the right kiln through the right kiln 1 st row of air inlet branch pipes 34, the right kiln 2 nd row of air inlet branch pipes 36 and the right kiln 3 rd row of air inlet branch pipes 38. The pre-curing kiln inlet manifold solenoid valve 46 controls the flow of heated steam into the curing space of the pre-curing kiln 40 through the pre-curing kiln inlet manifold 45.
The air-guiding and exhausting part comprises: the air guide axial flow fan 7 controls the hot steam in the left kiln row 1 curing kiln 18, the left kiln row 2 curing kiln 19, the left kiln row 3 curing kiln 20, the right kiln row 1 curing kiln 21, the right kiln row 2 curing kiln 22, the right kiln row 3 curing kiln 23 and the pre-curing kiln 40 respectively, controls the left kiln row 1 exhaust branch electromagnetic valve 2, the left kiln row 2 exhaust branch electromagnetic valve 4, the left kiln row 3 exhaust branch electromagnetic valve 6, the right kiln row 1 exhaust branch electromagnetic valve 9, the right kiln row 2 exhaust branch electromagnetic valve 11, the right kiln row 3 exhaust branch electromagnetic valve 13 and the pre-curing kiln exhaust branch electromagnetic valve 44 respectively, and controls the hot steam to enter the hot air guide 31 through the left kiln row 1 exhaust branch pipe 1, the left kiln row 2 exhaust branch pipe 3, the left kiln row 3 exhaust branch pipe 5, the right kiln row 1 exhaust branch pipe 8, the right kiln row 2 exhaust main pipe 10, the right kiln row 3 exhaust branch pipe 12 and the pre-curing kiln exhaust branch pipe 42 respectively, and controls the hot air guide electromagnetic valve 32 to re-enter the hot air guide main pipe 33. The hot steam can be controlled to enter the exhaust chimney 14 through the main exhaust chimney pipe 15 by controlling the on-off state of the main exhaust chimney pipe electromagnetic valve 43 so as to discharge the redundant hot steam outside the kiln.
Referring to fig. 2, in some embodiments, the transconductance control valve set includes: an exhaust manifold electromagnetic valve (2, 4, 6, 9, 11, 13, 44) provided on an exhaust manifold of one of the curing kilns, an air guide main pipe electromagnetic valve 32 provided on the air guide main pipe 31, and an intake manifold electromagnetic valve (26, 28, 30, 35, 37, 39, 46) provided on an intake manifold of the other of the curing kilns.
An axial flow fan is further arranged on the air guide main pipe 31, and the air flow direction of the axial flow fan during working is as follows: from the exhaust main pipe 47 to the intake main pipe 33.
In some embodiments, the main air intake pipe 33 is provided with an external heat supply inlet. The pipeline passing through from the external heat supply inlet to any air inlet branch pipe of the curing kiln forms an external heat supply pipeline; and the external heat supply pipeline is provided with a heat supply control valve group for controlling the circulation or blocking of hot gas in the external heat supply pipeline.
In some embodiments, the heating control valve block includes: an intake main pipe solenoid valve 24 provided on the intake main pipe 33, and intake branch pipe solenoid valves (26, 28, 30, 35, 37, 39, 46) provided on the respective intake branch pipes of the curing kiln.
In some embodiments, the air inlet main pipe 33 is provided with a heat discharging opening. From any one of the exhaust branch pipes of the curing kiln, the exhaust main pipe 47, the air guide main pipe 31 and the air inlet main pipe 33 sequentially pass through to reach the heat discharging opening, and the passing pipeline forms an exhaust cooling pipeline; and the exhaust cooling pipeline is provided with a cooling control valve group for controlling circulation or blocking of hot gas in the exhaust cooling pipeline.
In some embodiments, the system further comprises an exhaust stack 14 and an exhaust stack main pipe 15; one end of the exhaust chimney main pipe 15 is connected with a heat discharging opening on the air inlet main pipe 33; the exhaust stack 14 is provided at the other end of the exhaust stack main pipe 15. The main exhaust stack pipe 15 is provided with a main exhaust stack pipe electromagnetic valve 43.
In some embodiments, the cooling control valve set includes: exhaust branch pipe electromagnetic valves (2, 4, 6, 9, 11, 13, 44) provided on the exhaust branch pipes of the curing kiln, an air guide main pipe electromagnetic valve 32 provided on the air guide main pipe 31, and an exhaust stack main pipe electromagnetic valve 43.
Based on the system in any embodiment, the application also provides a hot gas mutual conductance control method for concrete member maintenance. As shown in fig. 3, the method comprises the steps of:
obtaining target temperatures and current temperatures of all curing kilns;
judging the heat demand state of each curing kiln according to the target temperature and the current temperature of the curing kiln: when the target temperature is higher than the current temperature, the heat demand state of the curing kiln is the heating demand; when the target temperature is less than the current temperature, the heat demand state of the curing kiln is the cooling demand;
if the curing kiln with the temperature rising requirement and the curing kiln with the temperature reducing requirement exist at the same time, entering a hot gas mutual conduction mode: the control valve group on the control target hot gas interconnecting pipeline is opened, and other control valves are all closed; wherein, the target hot gas mutual conductance pipeline is: and a hot gas mutual guide pipeline between the curing kiln with the temperature reduction requirement and the curing kiln with the temperature increase requirement.
In some embodiments, the method further comprises:
if only curing kilns with heating requirements exist, entering an external heating mode: the control valve group on the control target heating pipeline is opened, and other control valves are all closed; wherein, the target heating pipeline is: an external heat supply pipeline between the external heat supply inlet and the curing kiln with the heating requirement;
if only curing kilns with cooling requirements exist, entering an exhaust cooling mode: the control valve group on the control target cooling pipeline is opened, and other control valves are all closed; wherein, the target cooling pipeline is: an exhaust cooling pipeline from the curing kiln to the heat discharging opening;
if the target temperature of all curing kilns is equal to the current temperature, all control valves are closed.
In some embodiments, the method further comprises:
under the hot gas mutual conductance mode, when the curing kiln with the temperature rising requirement is detected to reach the target temperature, and the curing kiln with the temperature lowering requirement does not reach the target temperature, the air inlet branch pipe electromagnetic valve corresponding to the curing kiln with the temperature rising requirement is automatically closed, and the curing kiln with the temperature lowering requirement is controlled to enter the exhaust cooling mode;
under the hot gas mutual conductance mode, when the curing kiln with the temperature-reducing requirement is detected to reach the target temperature, and the curing kiln with the temperature-increasing requirement does not reach the target temperature, the electromagnetic valve of the exhaust branch pipe corresponding to the curing kiln with the temperature-reducing requirement is automatically closed, and the curing kiln with the temperature-increasing requirement is controlled to enter an external heat supply mode.
As shown in figure 3, according to actual production and maintenance conditions, the temperature raising and lowering requirements of the kiln inner row, the kiln inner vertical kiln and the kiln vertical kiln and the pre-curing kiln are issued by an upper computer system or set manually. And the dynamic temperature rise and fall adjustment between the kiln inner columns is taken as an example for the detailed description. The hot gas transconductance control method of the embodiment of the application specifically comprises the following steps:
1): when a certain row in the kiln receives the external heat supply and temperature rise requirement, the main valve of the external heat supply is opened, the air inlet valve is opened, the air outlet valve is closed, and the chimney valve is closed. The temperature of a column in the kiln begins to rise and when a column in the kiln reaches the desired temperature, all valve bodies are closed.
2): when the exhaust cooling requirement is received in a certain row in the kiln, the main valve of external heat supply is closed, the air inlet valve is closed, the exhaust valve is opened, and the chimney valve is opened. The air guide axial flow fan 7 starts to work, a certain row of temperature in the kiln starts to drop, and when the certain row in the kiln reaches the required temperature, all valve bodies and the air guide axial flow fan 7 are closed.
3): when a dynamic temperature increasing demand is received in one row in the kiln, and a dynamic temperature decreasing demand is received in the other row. The external heating main valve and the chimney valve are closed firstly, the air inlet valve of the row where the dynamic heating requirement is received is opened, and the air outlet valve is closed. And at the same time, the exhaust valve of the row where the dynamic cooling requirement is received is opened, the air inlet valve is closed, and the air guide axial flow fan 7 starts to work.
4): the column receiving the dynamic temperature increasing demand begins to increase in temperature and the column receiving the dynamic temperature decreasing demand begins to decrease in temperature. And 2) when detecting that the internal temperature of the column receiving the dynamic temperature increasing demand reaches the required temperature and the column receiving the dynamic temperature decreasing demand does not reach the required temperature, closing the air inlet valve body by the column receiving the dynamic temperature increasing demand, and simultaneously executing the step 2) by the column receiving the dynamic temperature decreasing demand.
5): and when detecting that the internal temperature of the column receiving the dynamic temperature increasing demand does not reach the required temperature, closing the exhaust valve body by the column receiving the dynamic temperature decreasing demand when the column receiving the dynamic temperature decreasing demand reaches the required temperature, and simultaneously executing the step 1) by the column receiving the dynamic temperature increasing demand.
The curing hot gas mutual conductance and waste heat recycling system can realize the dynamic mutual conductance of hot gas among each row in the vertical kiln, between the vertical kiln and between the vertical kiln and the pre-curing kiln for curing the concrete member, and realize the active temperature raising and lowering function in the kiln. External heat supply is not required in the concrete member curing and heating process, and the external air inlet and heat supply time is reduced through internal dynamic adjustment. The waste heat is fully utilized, the total heat supply is reduced, and the total maintenance cost of the concrete member is reduced.
The dynamic mutual conductance of hot gas can be realized when the heat and cooling requirements exist between different curing spaces simultaneously in each row of the vertical kiln, between the vertical kiln and between the vertical kiln and the pre-curing kiln for curing the concrete components, so that the dynamic connection is established between the independent curing spaces, and the heat and cooling mode is more flexible.
Each row in the same kiln realizes the dynamic adjustment of hot gas in each curing space on the premise of meeting curing requirements through the mutual air inlet and air exhaust of the system under the condition of not supplying heat or not fully opening the main valve. And when curing is completed, the waste heat and residual air in the curing space are led into another curing space needing to be heated for curing, so that heat recycling is realized.
External heat supply is not needed in the curing and heating process of the concrete member, and the external air inlet and heat supply time is shortened. The residual heat and the residual air are fully utilized, the total heat supply is reduced, and the total maintenance cost of the concrete member is reduced. And (3) discharging hot air in each vertical curing kiln and each pre-curing kiln for curing the concrete member, so as to realize the active cooling function in the kiln.
The concrete member curing hot gas mutual conductance and waste heat recycling system and the control method thereof provided by the application can be realized by a person skilled in the art through the links of properly changing conditions and the like by referring to the content of the text, although the method and the preparation technology of the application have been described by the preferred embodiment examples, the related person can obviously change or recombine the method and the technical route described herein to realize the final preparation technology without departing from the content, the spirit and the scope of the application. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be included within the spirit, scope and content of the application.
Claims (9)
1. A hot gas transconductance system for curing a concrete member, comprising: at least two curing kilns, an air inlet main pipe (33), an air outlet main pipe (47) and an air guide main pipe (31); the type of the curing kiln is a concrete member curing kiln and/or a pre-curing kiln;
one end of the curing kiln is connected with the air inlet main pipe (33) through air inlet branch pipes (25, 27, 29, 34, 36, 38 and 45), and the other end of the curing kiln is connected with the air outlet main pipe (47) through air outlet branch pipes (1, 3, 5, 8, 10, 12 and 42); one end of the air guide main pipe (31) is connected with the air inlet main pipe (33), and the other end is connected with the air outlet main pipe (47);
from the exhaust branch pipe of any curing kiln, the exhaust main pipe (47), the air guide main pipe (31) and the air inlet main pipe (33) sequentially pass through to reach the air inlet branch pipe of the other curing kiln, and the passing pipelines form hot air mutual guide pipelines; the hot gas interconnecting pipe is provided with a mutual guide control valve group for controlling the circulation or blocking of hot gas between the two curing kilns;
the transconductance control valve group comprises: an exhaust manifold electromagnetic valve (2, 4, 6, 9, 11, 13, 44) provided on an exhaust manifold of one of the curing kilns, an air guide main pipe electromagnetic valve (32) provided on the air guide main pipe (31), and an air intake manifold electromagnetic valve (26, 28, 30, 35, 37, 39, 46) provided on an air intake manifold of the other curing kiln;
an axial flow fan is further arranged on the air guide main pipe (31), and the air flow direction of the axial flow fan during working is as follows: from the exhaust main pipe (47) to the intake main pipe (33).
2. The system according to claim 1, characterized in that the inlet main pipe (33) is provided with an external heating inlet;
the pipeline passing through from the external heat supply inlet to any air inlet branch pipe of the curing kiln forms an external heat supply pipeline; and the external heat supply pipeline is provided with a heat supply control valve group for controlling the circulation or blocking of hot gas in the external heat supply pipeline.
3. The system of claim 2, wherein the heating control valve block comprises: an intake main pipe solenoid valve (24) provided on the intake main pipe (33), and intake branch pipe solenoid valves (26, 28, 30, 35, 37, 39, 46) provided on the respective intake branch pipes of the curing kiln.
4. A system according to any one of claims 1-3, characterized in that the inlet main pipe (33) is provided with a heat outlet;
from any one of the exhaust branch pipes of the curing kiln, the exhaust branch pipe sequentially passes through the exhaust main pipe (47), the air guide main pipe (31) and the air inlet main pipe (33) to reach the heat discharging opening, and the passing pipeline forms an exhaust cooling pipeline; and the exhaust cooling pipeline is provided with a cooling control valve group for controlling circulation or blocking of hot gas in the exhaust cooling pipeline.
5. The system according to claim 4, characterized in that the system further comprises an exhaust stack (14) and an exhaust stack main pipe (15); one end of the exhaust chimney main pipe (15) is connected with a heat discharging opening on the air inlet main pipe (33); the exhaust chimney (14) is arranged at the other end of the exhaust chimney main pipe (15);
an exhaust chimney main pipe electromagnetic valve (43) is arranged on the exhaust chimney main pipe (15).
6. The system of claim 5, wherein the cooling control valve block comprises: an exhaust branch pipe electromagnetic valve (2, 4, 6, 9, 11, 13, 44) arranged on the exhaust branch pipe of the corresponding curing kiln, an air guide main pipe electromagnetic valve (32) arranged on the air guide main pipe (31) and an exhaust chimney main pipe electromagnetic valve (43).
7. A method for controlling the mutual conductance of hot gases for the maintenance of concrete elements, characterized in that it is applied to a system according to any one of claims 1 to 6, said method comprising:
obtaining target temperatures and current temperatures of all curing kilns;
judging the heat demand state of each curing kiln according to the target temperature and the current temperature of the curing kiln: when the target temperature is higher than the current temperature, the heat demand state of the curing kiln is the heating demand; when the target temperature is less than the current temperature, the heat demand state of the curing kiln is the cooling demand;
if the curing kiln with the temperature rising requirement and the curing kiln with the temperature reducing requirement exist at the same time, entering a hot gas mutual conduction mode: the control valve group on the control target hot gas interconnecting pipeline is opened, and other control valves are all closed; wherein, the target hot gas mutual conductance pipeline is: and a hot gas mutual guide pipeline between the curing kiln with the temperature reduction requirement and the curing kiln with the temperature increase requirement.
8. The method of claim 7, wherein the method further comprises:
if only curing kilns with heating requirements exist, entering an external heating mode: the control valve group on the control target heating pipeline is opened, and other control valves are all closed; wherein, the target heating pipeline is: an external heat supply pipeline between the external heat supply inlet and the curing kiln with the heating requirement;
if only curing kilns with cooling requirements exist, entering an exhaust cooling mode: the control valve group on the control target cooling pipeline is opened, and other control valves are all closed; wherein, the target cooling pipeline is: an exhaust cooling pipeline from the curing kiln to the heat discharging opening;
if the target temperature of all curing kilns is equal to the current temperature, all control valves are closed.
9. The method of claim 8, wherein the method further comprises:
under the hot gas mutual conductance mode, when the curing kiln with the temperature rising requirement is detected to reach the target temperature, and the curing kiln with the temperature lowering requirement does not reach the target temperature, the air inlet branch pipe electromagnetic valve corresponding to the curing kiln with the temperature rising requirement is automatically closed, and the curing kiln with the temperature lowering requirement is controlled to enter the exhaust cooling mode;
under the hot gas mutual conductance mode, when the curing kiln with the temperature-reducing requirement is detected to reach the target temperature, and the curing kiln with the temperature-increasing requirement does not reach the target temperature, the electromagnetic valve of the exhaust branch pipe corresponding to the curing kiln with the temperature-reducing requirement is automatically closed, and the curing kiln with the temperature-increasing requirement is controlled to enter an external heat supply mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242041.6A CN114643636B (en) | 2022-03-11 | 2022-03-11 | Hot gas mutual conductance system for concrete member maintenance and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210242041.6A CN114643636B (en) | 2022-03-11 | 2022-03-11 | Hot gas mutual conductance system for concrete member maintenance and control method thereof |
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| Publication Number | Publication Date |
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| CN114643636A CN114643636A (en) | 2022-06-21 |
| CN114643636B true CN114643636B (en) | 2023-09-22 |
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| CN202210242041.6A Active CN114643636B (en) | 2022-03-11 | 2022-03-11 | Hot gas mutual conductance system for concrete member maintenance and control method thereof |
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