CN117341041A

CN117341041A - A full-automatic accuse temperature intelligence steam curing kiln for roof beam body

Info

Publication number: CN117341041A
Application number: CN202311660114.4A
Authority: CN
Inventors: 徐朋; 姚金才; 王雪杰; 薛川; 杨标; 柳洪恩; 张晋源; 杜宣和
Original assignee: Xuzhou Highway Engineering Corp
Current assignee: Xuzhou Highway Engineering Corp
Priority date: 2023-12-06
Filing date: 2023-12-06
Publication date: 2024-01-05
Anticipated expiration: 2043-12-06
Also published as: CN117341041B

Abstract

The invention relates to the technical field of constructional engineering, in particular to a full-automatic temperature-control intelligent steam curing kiln for a beam body, which comprises a curing kiln, wherein a plurality of curing stations are arranged in the curing kiln and are not mutually influenced; the spraying device is used for spraying and curing the beam body to be cured; the regional temperature sensor is positioned in the spraying region in each curing station and is used for detecting the environmental temperature in the spraying region of each curing station; the temperature sensor is provided with probes positioned on the surface and inside of the beam body and used for detecting the Liang Tibiao surface temperature and the core temperature of the beam body; and the maintenance system host is connected with the electromagnetic valve, the regional temperature sensor and the temperature sensor, and an intelligent maintenance system is stored in the maintenance system host for adjusting the maintenance process of the beam body. According to the invention, the steam curing system is added to the curing kiln to prevent the curing kiln from being influenced by weather, and the whole process intelligent control is adopted in the curing process, so that the structural quality of the beam body is ensured.

Description

A full-automatic accuse temperature intelligence steam curing kiln for roof beam body

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a full-automatic temperature-control intelligent steam curing kiln for a beam body.

Background

The quality of the beam body is good and bad, and the maintenance is very critical. Traditional manual maintenance is time-consuming and labor-consuming and water-consuming, and an ideal effect is difficult to achieve.

Chinese patent publication No.: CN111360992a discloses a steam curing kiln and a steam curing method, comprising a curing kiln, a steam control device, a water control device, a roller shutter door, a ventilation device and a master controller, wherein a plurality of temperature sensors are arranged in the curing kiln; the steam control device comprises a steam inlet pipeline, a first steam pipeline and a second steam pipeline, and the first steam pipeline and the second steam pipeline are respectively communicated with the steam inlet pipeline; a plurality of first steam outlets are arranged on the first steam pipeline, and a first steam valve is arranged at the first steam outlets; a plurality of second steam outlets are arranged on the second steam pipeline, and a second steam valve is arranged at the second steam outlets; the water control device comprises a water spraying pipeline, a plurality of water spraying ports are respectively arranged on the water spraying pipeline, and a water spraying regulating valve is arranged at the water spraying port; the master controller is electrically connected with the air interchanger, the rolling shutter door, the temperature sensor, the first steam valve, the second steam valve and the water spraying regulating valve respectively. It follows that the steam curing kiln has the following problems: the flow of the spraying device cannot be correspondingly adjusted according to the temperature change condition in the kiln in each curing stage, so that the quality of the steamed beam body cannot be ensured.

Disclosure of Invention

Therefore, the invention provides a full-automatic temperature-control intelligent steam curing kiln for a beam body, which is used for solving the problem that the flow of a spraying device cannot be correspondingly adjusted according to the temperature change condition in the kiln in each curing stage in the prior art, so that the quality of the steamed beam body cannot be ensured.

In order to achieve the aim, the invention provides a full-automatic temperature-control intelligent steam curing kiln for a beam body, which comprises,

the curing kiln is internally provided with a plurality of curing stations, the curing stations are not mutually influenced, and condensed water is discharged out of a trench at the bottom of the curing kiln;

the spraying device is uniformly distributed at the bottom of each curing station and is used for spraying and curing the beam body to be cured, the spraying device is used for spraying water and steam, a plurality of spraying points are uniformly distributed on the spraying device according to the length of the curing stations, the area with the plurality of spraying points is divided into one spraying area, corresponding electromagnetic valves are respectively arranged on any spraying point, and the electromagnetic valves are used for controlling the spraying quantity on the spraying points;

the regional temperature sensor is positioned in the spraying region in each curing station and is used for detecting the environmental temperature in the spraying region of each curing station;

The temperature sensor is provided with probes positioned on the surface and inside of the beam body and used for detecting the Liang Tibiao surface temperature and the core temperature of the beam body;

a maintenance system host connected with the electromagnetic valve, the regional temperature sensor and the temperature sensor, wherein an intelligent maintenance system is stored in the maintenance system host and adjusts the maintenance process of the beam body, and comprises,

judging whether the curing station is suitable for the beam body to enter according to the environmental temperature of the curing station in the pre-curing stage, adjusting a spraying device for the curing station unsuitable for the beam body to enter, judging the pre-curing temperature change rate of the beam body entering the pre-curing stage in a regional temperature change rate prediction model, controlling the pre-curing temperature change rate through the spraying device, adjusting and judging the temperature of the spraying region according to the temperature difference of any two spraying regions, adjusting the spraying device in the spraying region to be adjusted, and adjusting the period duration of each curing stage;

judging the temperature rising temperature difference of the beam body and the temperature difference of the beam body in the temperature rising stage, determining the opening or closing and spraying quantity of a spraying device of a curing station, and adjusting the expected temperature rising time and the temperature rising period according to the temperature rising time of the temperature rising node in any spraying area;

In the constant temperature stage, judging whether to adjust the spraying device according to the estimated maximum temperature and the constant temperature threshold value;

and in the cooling stage, the expected cooling duration and the cooling period of the nodes are adjusted according to the cooling duration of the temperature of the cooling nodes in any spraying area.

Further, before any beam body is placed to a corresponding curing station, determining whether the beam body is suitable for entering according to the environmental temperature of any spraying area of the curing station, determining whether a spraying device of the curing station needs to be adjusted according to a judging result, and storing a timing module and an initial temperature range of a beam body pre-curing stage in the intelligent curing system, wherein the initial temperature range comprises a maximum initial temperature and a minimum initial temperature;

for any of the spray zones of the curing station,

if the ambient temperature is in the initial temperature range, judging the temperature of the next spraying area;

if the ambient temperature is greater than the maximum initial temperature, triggering the spraying device to spray water until the ambient temperature of the curing station is within the corresponding initial temperature range, and controlling the electromagnetic valve of the spraying area to close the spraying device;

if the ambient temperature is less than the minimum initial temperature, triggering the spraying device to spray steam until the ambient temperature of the curing station is within the corresponding initial temperature range, and controlling the electromagnetic valve of the spraying area to close the spraying device;

And (3) placing the beam body into the curing station for curing until the environmental temperature of all spraying areas of the curing station meets the requirement, and triggering a timing module to time the curing time.

Further, for any beam body in the pre-curing stage, a pre-curing period, a pre-curing temperature change rate range and a regional temperature change rate prediction model are stored in the intelligent curing system;

in the intelligent maintenance system, equally dividing the pre-maintenance period into a plurality of pre-maintenance regulation and control time periods, recording a plurality of environmental temperatures in any pre-maintenance regulation and control time period and pre-maintenance time periods during detection, calculating corresponding temperature change rates, summarizing and calculating the average temperature change rate in the pre-maintenance regulation and control time period, and predicting the pre-maintenance temperature change rate of the next pre-maintenance regulation and control time period in the area temperature change rate prediction model according to the calculated average temperature;

if the pre-curing temperature change rate is not within the range of the pre-curing temperature change rate, the corresponding adjustment is carried out according to the trend of the pre-curing temperature change, including,

if the pre-raising temperature is in a growing trend, triggering a spraying device to spray water until the pre-raising temperature change rate of the predicted next pre-raising regulation duration is within the pre-raising temperature change rate range;

If the pre-raising temperature is in a decreasing trend, triggering a spraying device to spray steam until the pre-raising temperature change rate of the next pre-raising regulation duration is predicted to be within the pre-raising temperature change rate range;

and for any beam body in the pre-curing stage, until the pre-curing temperature change rate in all spraying areas is within the pre-curing temperature change rate, and if the pre-curing time length reaches the pre-curing period, the beam body enters the heating stage.

Further, the regional temperature change rate prediction model is built according to the temperature change condition of any spraying region, meanwhile, according to the temperature conditions in a plurality of spraying regions, flow adjustment parameters and temperature difference maximum values of the spraying devices are stored in the intelligent maintenance system, according to the temperatures of a plurality of spraying regions on any maintenance station, the temperature difference value in any two spraying regions is calculated, and whether the spraying conditions of the spraying devices in the two spraying regions are adjusted is judged;

if the temperature difference is smaller than or equal to the maximum value of the temperature difference, the temperature difference of the two spraying areas is proper, and the temperature difference judgment of the other two spraying areas is carried out;

if the temperature difference is greater than the maximum temperature difference, adjusting the spraying amount of the electromagnetic valve of the spraying device in the two spraying areas according to the maintenance stage of the maintenance station;

When the maintenance station is in a temperature rising stage, the steam spraying amount of the high-temperature spraying area is adjusted to be reduced according to the flow adjustment parameters, and the steam spraying amount of the low-temperature spraying area is adjusted to be increased according to the flow adjustment parameters;

when the maintenance station is in a cooling stage, the spraying amount of water in the high-temperature spraying area is adjusted according to the flow adjustment parameter, and the spraying amount of water in the low-temperature spraying area is adjusted according to the flow adjustment parameter, so that the spraying amount of water in the low-temperature spraying area is reduced.

Further, for any spray area, when the spray quantity is adjusted, calculating the predicted area adjustment duration of the spray area in the intelligent maintenance system according to an area temperature change rate prediction model, summarizing the predicted area adjustment durations of a plurality of spray areas to be adjusted to calculate the average area adjustment duration, and adjusting the average area adjustment duration on the basis of the period of each maintenance stage originally set by the maintenance station;

the intelligent maintenance system is internally provided with preset numbers of preset periods aiming at the pre-maintenance stage, the heating-up period aiming at the heating-up stage, the constant temperature judging period aiming at the constant temperature stage, the cooling period aiming at the cooling stage and the average region adjusting duration in each period;

The period for each curing stage is adjusted to be,

when the maintenance station is in the pre-maintenance stage, if the spraying amount of any spraying area needs to be adjusted, the average area adjustment time length of the preset number is prolonged on the basis of the pre-maintenance period;

when the maintenance station is in the temperature rising stage, if the spraying amount of any spraying area needs to be adjusted, the average area adjusting duration of the preset number is prolonged on the basis of the temperature rising period;

when the maintenance station is in the constant temperature stage, if the spraying amount of any spraying area needs to be adjusted, the average area adjusting duration of the preset number is prolonged on the basis of the constant temperature judging period;

when the maintenance station is in the cooling stage, if the spraying amount of any spraying area needs to be adjusted, the average area adjusting duration of the preset number is prolonged on the basis of the cooling period.

Further, recording the actual region temperature difference adjustment time length of a spraying region in the intelligent maintenance system, calculating the difference value between the predicted region temperature difference adjustment time length and the predicted time length of the actual region temperature difference adjustment time length, and judging whether the region temperature change rate prediction model is changed or not, wherein the maximum time length difference value exists in the intelligent maintenance system;

And when the predicted time length difference is greater than the maximum time length difference, reducing the temperature change rate in the region temperature change rate prediction model corresponding to the spraying region.

Further, for any beam body in a heating stage, in any heating period, calculating the temperature difference of the beam body and the temperature difference of the beam body heating and curing according to the surface temperature of the beam body, the core temperature of the beam body and the environmental temperature of a curing station in real time, adjusting a spraying device, calculating the temperature difference of the beam body according to the surface temperature of the beam body and the core temperature of the beam body, calculating the temperature difference of the beam body heating and curing according to the surface temperature of the beam body and the environmental temperature of the curing station, and arranging a threshold value of the temperature difference of the beam body and a threshold value of the temperature difference of the beam body heating and curing in the intelligent curing system;

when the temperature difference of the beam body is larger than the temperature difference threshold value of the beam body and the temperature rise and maintenance temperature difference of the beam body is larger than the temperature rise and maintenance temperature difference threshold value of the beam body, judging that the steam quantity sprayed by the spraying device is too large, and controlling an electromagnetic valve of the spraying area to close the spraying device;

when the temperature difference of the beam body is smaller than the temperature difference threshold of the beam body, but the temperature rise and maintenance temperature difference of the beam body is larger than the temperature rise and maintenance temperature difference threshold of the beam body, the judgment of the spraying device in the temperature rise stage is continued;

When the temperature difference of the beam body is smaller than the temperature difference threshold value of the beam body and the temperature rise and maintenance temperature difference of the beam body is smaller than the temperature rise and maintenance temperature difference threshold value of the beam body, the spray device is judged to spray small in steam quantity, and the spray device steam spraying quantity is increased.

Further, dividing any heating period into a plurality of heating stages in the intelligent maintenance system, determining the heating stages according to the temperature of a plurality of heating nodes in the beam body heating stages, and setting corresponding heating predicted time length for any heating node temperature;

for the temperature of any heating node, timing the heating time length through a timing module in the heating stage, calculating the heating time length of any spraying area through an area temperature change rate prediction model, comparing the heating predicted time length to determine whether to adjust the heating time length, and setting heating time length adjustment parameters of the intelligent maintenance system, wherein the heating time length adjustment parameters are determined according to the difference value between the heating predicted time length and the heating time length;

if the heating predicted time length needs to be adjusted, calculating an adjustment time length in the intelligent maintenance system according to a heating time length adjustment parameter and the heating predicted time length, and respectively adjusting on the basis of the heating predicted time length and a heating period;

And (3) until the core temperature of all the beam bodies reaches the temperature of the last heating node, and the heating period of the beam bodies reaches the heating period in a timing way, the beam bodies enter a constant temperature stage.

Further, for any beam body in a constant temperature stage, a constant temperature threshold value is stored in the intelligent maintenance system, a timing module is used for timing a constant temperature judging period for entering the constant temperature stage, in the constant temperature judging period, a predicted maximum temperature is calculated according to the core temperature of the beam body in the constant temperature stage, whether the spray device is adjusted according to judgment of the predicted maximum temperature and the constant temperature threshold value, and a temperature regulation coefficient is stored in the intelligent maintenance system and is in direct proportion to the difference value between the constant temperature threshold value and the predicted maximum temperature;

if the estimated highest temperature is greater than or equal to the constant temperature threshold value, controlling the electromagnetic valve to reduce the spraying amount of the sprayed steam according to the temperature regulation and control coefficient;

and if the estimated highest temperature is smaller than the constant temperature threshold, controlling the electromagnetic valve to increase the spraying amount of the sprayed steam according to the temperature regulation and control coefficient for the spraying device.

Further, for any beam body in a cooling stage, dividing any cooling period into a plurality of cooling stages in the intelligent maintenance system, determining the cooling stage according to a plurality of cooling node temperatures in the cooling process of the beam body, setting corresponding expected cooling time length for any cooling node temperature, timing the cooling time length in the cooling process through a timing module, calculating the cooling time length of any spraying area through an area temperature change rate prediction model, comparing the expected cooling time length to judge whether to adjust the cooling time length, and setting a cooling time length adjustment parameter in the intelligent maintenance system, wherein the cooling time length adjustment parameter is determined according to the difference value between the expected cooling time length and the cooling time length;

If the expected cooling time length needs to be adjusted, calculating an adjustment time length in the intelligent maintenance system according to the adjustment parameter of the expected cooling time length and the expected cooling time length, and respectively adjusting the expected cooling time length and the cooling period;

and (3) until the core temperature of the beam body reaches the temperature of the last cooling node, and the cooling time reaches the cooling period, the maintenance of the beam body is completed.

Compared with the prior art, the invention has the beneficial effects that the temperature sensor of the relevant area is added to the full-automatic temperature-control intelligent steam curing kiln to change the curing process of the curing kiln into visual data, the curing process is divided into four stages, different temperature control modes are set for each stage, so that the aim of ensuring the visualization of the temperature of the beam curing process and simultaneously automatically controlling the temperature is fulfilled, the aim of automatic curing is fulfilled, the component quality is better, the consumption of manual curing is reduced, the curing process is divided into four stages, and different curing key points are set for each stage, so that the quality of a beam to be cured is ensured, and the influence of the curing process on the strength of the beam is reduced.

Further, when the beam enters the full-automatic temperature-control intelligent steam curing kiln, the environment temperature of each spraying area of the curing station is judged, so that the initial environment of the curing station accords with the pre-curing environment of beam curing, and the beam cracking problem caused by unsuitable environment of the curing station can not occur after the beam enters the curing station.

Further, the invention predicts the pre-curing temperature change rate of the next regulation duration according to the average temperature of any regulation duration in the pre-curing period of the beam body in the pre-curing stage, and ensures that the pre-curing temperature change rate of the beam body in the pre-curing stage meets the requirement of beam body maintenance so as to improve the quality of the beam body.

Further, the temperature difference condition in any two spraying areas is calculated, the two spraying areas exceeding the temperature difference threshold value are correspondingly adjusted by the spraying device according to the curing stage condition of the curing station, so that the beam body in any curing station is uniformly heated in the curing process, and meanwhile, the spraying condition of the spraying device is timely adjusted in the heating and cooling stage, so that the temperature difference of each spraying area of the curing kiln is in a reasonable range, and the uniform change of the intensity of the beam body in the curing process is ensured.

Further, in the process of adjusting and controlling the temperature difference under the condition of overlarge temperature difference of the spraying area, the temperature change in the curing kiln needs to be completed in a certain time, so that the temperature change time is determined in the area temperature change rate prediction model, and meanwhile, the curing period of the original foundation is correspondingly prolonged, so that the curing expectation can be reached under the condition that the temperature reaches and the duration is enough in any curing stage.

Further, the method corrects the prediction duration result in the regional temperature change rate prediction model, ensures that the cycle duration of each curing stage can be accurately adjusted under the condition of completing curing expectation, and achieves the effect of reducing curing cost.

Further, the temperature of the beam body in the temperature rising stage is judged, and the spraying device in the temperature rising stage is adjusted, so that the uniform temperature change of the beam body in the temperature rising stage is ensured, and the condition that the structure of the beam body is damaged due to overlarge temperature difference is prevented.

Furthermore, the beam body temperature in the temperature rising stage is divided into a plurality of parts, the strength of an initial structure of the concrete in the temperature rising stage is lower, the internal stress of the initial structure is not formed, the structure of the concrete is easily damaged by the outside, the temperature rising speed cannot be too high, and the temperature rising process is divided into different node temperature sections by adopting a plurality of node temperatures, so that the damage influence generated after the thermal expansion of the liquid phase and the gas phase is reduced.

Furthermore, the invention predicts the constant temperature highest temperature in constant temperature curing, controls the highest temperature to be less than 50 ℃ and prevents the strength of the beam body from being increased due to the overhigh constant temperature curing temperature.

Furthermore, the temperature adjustment of the cooling node is carried out in the cooling process and the heating process, so that the purpose of reasonably cooling is achieved, and the problem that shrinkage and tensile stress are overlarge in a prefabricated part due to the overlarge cooling speed, so that micro cracks are generated in the concrete prefabricated part is avoided.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a fully automatic temperature-controlled intelligent steam curing kiln for girders according to an embodiment;

fig. 2 is a partially enlarged view of a spray header of the spray device 2 at a in a schematic diagram of an internal structure of the full-automatic temperature-control intelligent steam curing kiln for a beam body according to the embodiment;

fig. 3 is a schematic view illustrating spray area division of a curing station 3 of the full-automatic temperature-control intelligent steam curing kiln for a beam body according to the embodiment;

FIG. 4 is a logic process diagram of a pre-curing stage in the control adjustment of the fully automatic temperature-controlled intelligent steam curing kiln for beams according to the embodiment;

FIG. 5 is a logic process diagram of a heating stage in control adjustment of a fully automatic temperature control intelligent steam curing kiln for a beam body according to an embodiment;

FIG. 6 is a logic process diagram of the constant temperature stage and the cooling stage in the control adjustment of the full-automatic temperature control intelligent steam curing kiln for the beam body according to the embodiment;

in the figure, a kiln body wall 1, a spraying device 2, a curing station 3, a regional temperature sensor 4, a curing system host 5 and a spraying head 21 are arranged on the kiln body wall.

Detailed Description

In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

Referring to fig. 1 to 6, fig. 1 is a schematic diagram of an internal structure of a fully automatic temperature-controlled intelligent steam curing kiln for a girder according to the present invention, fig. 2 is a partially enlarged view of a spray header of a spray device 2 at a point a in the schematic diagram of the internal structure of the fully automatic temperature-controlled intelligent steam curing kiln for the girder according to the embodiment, fig. 3 is a schematic diagram of curing stage division of the fully automatic temperature-controlled intelligent steam curing kiln for the girder according to the embodiment, fig. 4 is a logic process diagram of a pre-curing stage in control adjustment of the fully automatic temperature-controlled intelligent steam curing kiln for the girder according to the embodiment, fig. 5 is a logic process diagram of a heating stage in control adjustment of the fully automatic temperature-controlled intelligent steam curing kiln for the girder according to the embodiment, and fig. 6 is a logic process diagram of a constant temperature stage and a cooling stage in control adjustment of the fully automatic temperature-controlled intelligent steam curing kiln for the girder according to the embodiment. In fig. 1, the kiln body wall 1 is the structure inside the kiln body, and the maintenance stations 3 in the drawing are not affected each other and need to be isolated, but in order to ensure that the spraying devices 2 distributed in the kiln body wall can be seen clearly, the isolated kiln body wall is not shown. The spraying device 2 in the spraying device is fixed on the kiln body wall in the middle part, the spraying device 2 comprises a plurality of uniformly distributed spraying heads 21, any spraying head corresponds to one spraying point, and the spraying device 2 is arranged according to the curing stations 3 of the beam body in the curing kiln so as to ensure that the beam body is uniformly heated in the process of curing the beam body of each curing station; the area temperature sensors are stored in a plurality of areas and are positioned in the spraying areas of the curing stations. In fig. 3, there are spray zones labeled N1-N8 for curing station 3 in the curing kiln.

The invention provides a full-automatic temperature-control intelligent steam curing kiln for a beam body, which comprises,

the spraying device 2 is uniformly distributed at the bottom of each curing station and is used for spraying and curing the beam body to be cured, the spraying device 2 is used for spraying water and steam, a plurality of spraying points are uniformly distributed on the spraying device 2 according to the length of the curing stations, the areas with the spraying points are divided into one spraying area, corresponding electromagnetic valves are respectively arranged on any spraying point, and the electromagnetic valves are used for controlling the spraying quantity on the spraying points;

a region temperature sensor 4 located in the spraying region in each curing station for detecting the ambient temperature in the spraying region of each curing station;

a maintenance system host 5 connected with the electromagnetic valve, the regional temperature sensor and the temperature sensor, wherein an intelligent maintenance system is stored in the maintenance system host and adjusts the maintenance process of the beam body, and comprises,

judging the temperature rising temperature difference of the beam body and the temperature difference of the beam body in the temperature rising stage, determining the opening or closing and spraying quantity of a spraying device of a curing station, and adjusting the expected temperature rising time length and the temperature rising period of the node according to the temperature rising time length of the temperature rising node in any spraying area;

Four maintenance stages are stored in the intelligent maintenance system, and the intelligent maintenance system comprises a pre-maintenance stage, a heating stage, a constant temperature stage and a cooling stage.

A pre-breeding stage: the beam body is placed at room temperature (not lower than 5 ℃) for curing after pouring, so that gas in the beam body is smoothly discharged, the hydration degree of cement before steam curing can be improved, and the cement can have certain initial structural strength.

And (3) heating: the initial structure of the concrete has lower strength in the heating period, the internal stress is not formed, at the moment, the structure of the concrete is easy to be damaged by the outside, the heating speed cannot be too high, and the sectional heating is adopted, namely, the temperature is slowly raised, and then the temperature is increased a little by little, so that the damage influence caused by the thermal expansion of the liquid phase and the gas phase is reduced.

Constant temperature stage: the highest temperature at this stage is less than 50 ℃, and the increase of the beam strength is affected by the excessive constant temperature curing temperature.

And (3) a cooling stage: the beam body starts to be shaped slowly, and the change of the inside of the beam body is mainly caused by the temperature difference between the inside and the outside of the concrete, the volume shrinkage, the vaporization of water and the large tensile stress, so that the beam body is reasonably cooled, and the situation that the shrinkage and the tensile stress of the beam body are too large due to the too high cooling speed is avoided, and then the beam body of the concrete prefabricated part is caused to generate microcracks.

Specifically, in this embodiment, before any beam body is placed on a corresponding curing station, whether the beam body is suitable for entering is determined according to the environmental temperature of any spraying area of the curing station, whether the spraying device of the curing station needs to be adjusted is determined according to a judging result, and an initial temperature range of a timing module and a beam body pre-curing stage is stored in the intelligent curing system, wherein the initial temperature range comprises a maximum initial temperature and a minimum initial temperature;

For any of the spray zones of the curing station,

For the spraying area N1 of the curing station 3, an initial temperature range and a timing module of a girder pre-curing stage are stored in the intelligent curing system, wherein the initial temperature range comprises the maximum initial temperatureAnd minimum initial temperature>。

If the environmental temperature W0 is in the corresponding initial preset range, judging the temperature of the next spraying area;

if the ambient temperature W0 is greater than the maximum initial temperature Triggering the spraying device to spray water until the environmental temperature of the maintenance station is in the corresponding initial temperature range, and controlling the electromagnetic valve of the spraying area to close the spraying device;

if the ambient temperature W0 is less than the minimum initial temperatureTriggering the spraying device to spray steam until the environmental temperature of the maintenance station is within the corresponding initial temperature range, and controlling the electromagnetic valve of the spraying area to close the spraying device; and (3) placing the beam body into the curing station for curing until the environmental temperature of all spraying areas of the curing station meets the requirement, and triggering a timing module to time the curing time.

When the beam body enters the full-automatic temperature-control intelligent steam curing kiln, the environment temperature of each spraying area of the curing station is judged, so that the initial environment of the curing station accords with the pre-curing environment of beam body curing, and the beam body is prevented from cracking caused by unsuitable environment of the curing station after entering the curing station.

Specifically, in this embodiment, for any beam body in the pre-curing stage, there are pre-curing periods, a pre-curing temperature change rate range and a regional temperature change rate prediction model in the intelligent curing system;

And for the beam body in the pre-curing stage, a pre-curing period Yt, a pre-curing temperature change rate range Yb and a regional temperature change rate prediction model are stored in the intelligent curing system.

The method comprises the steps that a pre-culture period Yt is uniformly divided into a plurality of pre-culture regulation and control duration tj, j=1, 2, & gt, m, j are sequence numbers of the pre-culture regulation and control duration, a first pre-culture regulation and control duration t1 is stored with a plurality of detected environment temperatures Wi, i=1, 2, & gt, n, i are sequence numbers of the detected environment temperatures, the change rate of the detected environment temperatures is calculated according to the pre-culture time detected by a timing module, and the corresponding temperature change rate is Vi.

The average temperature change rate of the first precursory control period t1 is:at this time, according to the average temperature change rate +.>And predicting the precured temperature change rate of the second precured regulation and control duration t2 to be V2 in the regional temperature change rate prediction model.

Before the temperature rise starts, the concrete pouring completion time is not less than 4 hours, the temperature rise rate is not more than 10 ℃/h, and the temperature reduction rate is not more than 5 ℃/h. Therefore, the variation rate of the precuring temperature is-5 ℃/h to 10 ℃/h.

If the pre-raising temperature change rate V2 is not in the pre-raising temperature change rate range, correspondingly adjusting according to the trend of the pre-raising temperature change, wherein if the pre-raising temperature is a growing trend, triggering a spraying device to spray water until the pre-raising temperature change rate of the next pre-raising regulation duration is predicted to be in the pre-raising temperature change rate range; if the pre-raising temperature is a reducing trend, triggering a spraying device to spray steam until the pre-raising temperature change rate of the next pre-raising regulation duration is predicted to be within the pre-raising temperature change rate range, and for any beam body in the pre-raising stage, if the pre-raising duration reaches the pre-raising period, entering the heating stage by the beam body.

According to the invention, the pre-raising temperature change rate of the next regulation duration is predicted according to the average temperature of any regulation duration in the pre-raising period of the beam body in the pre-raising stage, so that the pre-raising temperature change rate of the beam body in the pre-raising stage is ensured to meet the requirement of maintaining the beam body, and the quality of the beam body is improved.

Specifically, in this embodiment, the area temperature change rate prediction model is built according to the temperature change condition of any one spray area, and meanwhile, according to the temperature conditions in a plurality of spray areas, there are flow adjustment parameters and maximum temperature difference values of the spray devices in the intelligent maintenance system, and according to the temperatures of a plurality of spray areas on any one maintenance station, the temperature difference value in any two spray areas is calculated, and whether to adjust the spray conditions of the spray devices in the two spray areas is determined;

The regional temperature change rate prediction model is built according to the temperature change rate of each spraying region so as to predict the temperature change and the temperature change duration of the curing kiln in the process of judging the pre-curing and the subsequent temperature change.

In this embodiment, for the curing station 3, the temperature difference between the existing spraying areas N1 and N2 is Wc12, and the flow adjustment parameter l and the maximum temperature difference Wcmax of the spraying device are stored in the intelligent curing system.

If the temperature difference Wc12 is smaller than or equal to the maximum temperature difference Wcmax, the temperature difference between the spraying areas N1 and N2 is proper, and the temperature difference between the other two spraying areas is judged; if the temperature difference Wc12 is greater than the maximum temperature difference Wcmax, the electromagnetic valve of the spraying device in the two spraying areas is adjusted according to the curing stage of the curing station.

If the temperature difference Wc12 between the spray areas N1 and N2 is greater than the maximum temperature difference Wcmax, and the curing station 3 is in the temperature-raising stage, the steam spray amount is adjusted to be reduced according to the flow adjustment parameter l for the spray area with high temperature, and the steam spray amount is adjusted to be increased according to the flow adjustment parameter for the spray area with low temperature.

If the temperature difference Wc12 between the spray areas N1 and N2 is greater than the maximum temperature difference Wcmax, and the maintenance station 3 is in the cooling stage, the spray amount of the water is adjusted to increase according to the flow adjustment parameter l for the spray area with high temperature, and the spray amount of the water is adjusted to decrease according to the flow adjustment parameter for the spray area with low temperature.

According to the invention, the temperature difference conditions in any two spraying areas are calculated, the two spraying areas exceeding the temperature difference threshold are correspondingly adjusted according to the curing stage conditions of the curing stations, so that the beam body in any curing station is uniformly heated in the curing process, and meanwhile, the spraying conditions of the spraying devices are timely adjusted in the heating and cooling stages, so that the temperature difference of each spraying area of the curing kiln is ensured to be in a reasonable range, and the uniform change of the strength of the beam body in the curing process is ensured.

Specifically, in this embodiment, for any spray region, when the spray quantity is adjusted, calculating a predicted region adjustment duration of the spray region in the intelligent maintenance system according to a region temperature change rate prediction model, summarizing the predicted region adjustment durations of a plurality of spray regions to be adjusted to calculate an average region adjustment duration, and adjusting the average region adjustment duration on the basis of the period of each maintenance stage originally set by the maintenance station;

the period for each curing stage is adjusted to be,

In the invention, in the process of adjusting and controlling the temperature difference under the condition of overlarge temperature difference of the spraying area, as the temperature change in the curing kiln needs to be completed in a certain time, the temperature change time is determined in the area temperature change rate prediction model, and meanwhile, the curing period of the original foundation is correspondingly prolonged, so that the curing expectation can be reached under the conditions that the temperature reaches and the time is enough in any curing stage.

Specifically, in this embodiment, for any spray region in the intelligent maintenance system, recording the actual region temperature difference adjustment duration of the spray region, calculating the difference value between the predicted region adjustment duration and the predicted region temperature difference adjustment duration, and determining whether to change the region temperature change rate prediction model, where the maximum duration difference value exists in the intelligent maintenance system;

According to the method, the prediction duration result in the regional temperature change rate prediction model is corrected, so that the cycle duration of each curing stage can be accurately adjusted under the condition that curing expectation is completed, and the effect of reducing curing cost is achieved.

Specifically, in this embodiment, for any beam body in a heating stage, in any heating period, calculating a temperature difference between the beam body and the beam body in real time according to a surface temperature of the beam body, a core temperature of the beam body, and an environmental temperature of a curing station, and adjusting a spraying device, where the temperature difference between the beam body and the beam body is calculated according to the surface temperature of the beam body and the core temperature of the beam body, and the temperature difference between the beam body and the beam body is calculated according to the surface temperature of the beam body and the environmental temperature of the curing station, and a temperature difference threshold of the beam body are set in the intelligent curing system;

In the heating stage, the temperature difference between the surface layer of the concrete and the ambient temperature is not more than 15 ℃, and the temperature difference between the surface layer of the concrete and the core is not more than 25 ℃. Therefore, a Liang Tiben body temperature difference threshold of 25 ℃ is arranged in the intelligent maintenance system.

The invention judges the temperature of the beam body in the temperature rising stage and adjusts the spraying device in the temperature rising stage, thereby ensuring the uniform temperature change of the beam body in the temperature rising stage and preventing the damage of the beam body structure caused by overlarge temperature difference.

Specifically, in this embodiment, any heating period is divided into a plurality of heating stages in the intelligent maintenance system, the heating stages are determined according to a plurality of heating node temperatures in the beam heating stages, and corresponding heating predicted durations are set for any heating node temperature;

The beam body temperature in the temperature rising stage is divided into a plurality of sections, the strength of an initial structure of the concrete in the temperature rising stage is lower, the internal stress of the initial structure is not formed, the structure of the concrete is easily damaged by the outside, the temperature rising speed cannot be too high, and the temperature rising process is divided into different node temperature sections by adopting a plurality of node temperatures, so that the damage influence generated after the thermal expansion of the liquid phase and the gas phase is reduced.

Specifically, in this embodiment, for any beam body in a constant temperature stage, there is a constant temperature threshold in the intelligent maintenance system, a timing module counts a constant temperature judgment period for entering the constant temperature stage, in the constant temperature judgment period, an estimated maximum temperature is calculated according to the core temperature of the beam body in the constant temperature stage, and whether the spray device is adjusted according to the judgment of the estimated maximum temperature and the constant temperature threshold, and there is a temperature regulation coefficient in the intelligent maintenance system, where the temperature regulation coefficient is in direct proportion to the difference between the constant temperature threshold and the estimated maximum temperature;

The invention predicts the constant temperature highest temperature in constant temperature curing, controls the highest temperature to be less than 50 ℃ and prevents the strength of the beam body from being increased due to the overhigh constant temperature curing temperature.

Specifically, in this embodiment, for any beam body in a cooling stage, dividing any cooling period into a plurality of cooling stages in the intelligent maintenance system, determining the cooling stage according to a plurality of cooling node temperatures in a beam body cooling process, setting a corresponding expected cooling time length for any cooling node temperature, timing the cooling time length in the cooling process by a timing module, calculating the cooling time length of any spraying area by a regional temperature change rate prediction model, comparing the expected cooling time length to determine whether to adjust the cooling time length, and setting a cooling time length adjustment parameter in the intelligent maintenance system, wherein the cooling time length adjustment parameter is determined according to a difference value between the expected cooling time length and the cooling time length;

According to the invention, the temperature of the cooling node is adjusted in the cooling process and the heating process, so that the purpose of reasonably cooling is achieved, and the phenomenon that the prefabricated part is contracted and pulled too much due to too high cooling speed is avoided, so that the concrete prefabricated part is microcracked.

Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.

The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A full-automatic temperature-control intelligent steam curing kiln for a beam body is characterized by comprising,

2. The full-automatic temperature-control intelligent steam curing kiln for beam bodies according to claim 1, wherein for any beam body, before being placed on a corresponding curing station, whether the beam body enters is determined according to the environmental temperature of any spraying area of the curing station, whether the spraying device of the curing station needs to be adjusted is determined according to a judging result, and an initial temperature range of a timing module and a beam body pre-curing stage is stored in the intelligent curing system, wherein the initial temperature range comprises a maximum initial temperature and a minimum initial temperature;

For any of the spray zones of the curing station,

3. The fully automatic temperature-controlled intelligent steam curing kiln for beam bodies according to claim 2, wherein for any beam body in a pre-curing stage, a pre-curing period, a pre-curing temperature change rate range and a regional temperature change rate prediction model are stored in the intelligent curing system;

4. The full-automatic temperature-control intelligent steam curing kiln for the beam body according to claim 3, wherein the regional temperature change rate prediction model is built according to the temperature change condition of any spraying region, flow adjustment parameters and temperature difference maximum values of spraying devices are stored in the intelligent curing system according to the temperature conditions in a plurality of spraying regions, the temperature difference value in any two spraying regions is calculated according to the temperatures of a plurality of spraying regions on any curing station, and whether the spraying conditions of the spraying devices in the two spraying regions are adjusted is judged;

5. The full-automatic temperature-control intelligent steam curing kiln for the beam body according to claim 4, wherein for any spraying area, when the spraying amount is adjusted, the prediction area adjustment duration of the spraying area is calculated in the intelligent curing system according to an area temperature change rate prediction model, the prediction area adjustment durations of a plurality of spraying areas are summarized to be adjusted to calculate the average area adjustment duration, and the average area adjustment duration is adjusted on the basis of the period of each curing stage originally set by a curing station;

the period for each curing stage is adjusted to be,

6. The fully automatic temperature-controlled intelligent steam curing kiln for the beam body according to claim 5, wherein for any spraying area in the intelligent curing system, the actual area temperature difference adjustment time of the spraying area is recorded, the difference between the predicted area temperature adjustment time and the predicted time of the actual area temperature difference adjustment time is calculated, whether the area temperature change rate prediction model is changed or not is judged, and the maximum time difference exists in the intelligent curing system;

7. The full-automatic temperature-control intelligent steam curing kiln for the beam body according to claim 3, wherein for any beam body in a heating stage, in any heating period, the temperature difference of the beam body and the temperature difference of the beam body temperature rise curing are calculated in real time according to the surface temperature of the beam body, the core temperature of the beam body and the environmental temperature of a curing station, and the spraying device is adjusted, the temperature difference of the beam body is calculated according to the surface temperature of the beam body and the core temperature of the beam body, the temperature difference of the beam body temperature rise curing is calculated according to the surface temperature of the beam body and the environmental temperature of a curing station, and a temperature difference threshold of the beam body temperature rise curing are arranged in the intelligent curing system;

8. The fully automatic temperature-controlled intelligent steam curing kiln for the beam body according to claim 7, wherein any heating period is divided into a plurality of heating stages in the intelligent curing system, the heating stages are determined according to a plurality of heating node temperatures in the beam body heating stages, and corresponding heating predicted time periods are set for any heating node temperature;

9. The full-automatic temperature-control intelligent steam curing kiln for the beam body according to claim 8, wherein for any beam body in a constant temperature stage, a constant temperature threshold value exists in the intelligent curing system, a timing module counts a constant temperature judging period for entering the constant temperature stage, in the constant temperature judging period, an estimated maximum temperature is calculated according to the core temperature of the beam body in the constant temperature stage, whether the spraying device is adjusted according to the judgment of the estimated maximum temperature and the constant temperature threshold value, and a temperature regulation coefficient exists in the intelligent curing system, wherein the temperature regulation coefficient is in direct proportion to the difference value between the constant temperature threshold value and the estimated maximum temperature;

10. The full-automatic temperature-control intelligent steam curing kiln for the beam body according to claim 9, wherein for any beam body in a cooling stage, any cooling period is divided into a plurality of cooling stages in the intelligent curing system, the cooling stages are determined according to a plurality of cooling node temperatures in the beam body cooling process, corresponding cooling estimated time length is set for any cooling node temperature, the cooling time length is timed through a timing module in the cooling process, the cooling time length of any spraying area is calculated through an area temperature change rate prediction model, whether the cooling time length is adjusted is judged by comparing the cooling estimated time length, and a cooling time length adjustment parameter is arranged in the intelligent curing system and is determined according to the difference value between the cooling estimated time length and the cooling time length;