CN204662448U - Building the intelligent water-cooled system of concrete in mass - Google Patents
Building the intelligent water-cooled system of concrete in mass Download PDFInfo
- Publication number
- CN204662448U CN204662448U CN201520309312.0U CN201520309312U CN204662448U CN 204662448 U CN204662448 U CN 204662448U CN 201520309312 U CN201520309312 U CN 201520309312U CN 204662448 U CN204662448 U CN 204662448U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- concrete
- valve
- mass
- current divider
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses building the intelligent water-cooled system of concrete in mass, comprising heat-exchange device, heat exchange auxiliary device and control device; Heat exchanging pipe is the many pipelines be arranged in concrete in mass; The controller of control device is connected with temperature pick up, the first electric three passes valve, the second electric three passes valve, the first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve, the 4th electrical ball valve, the first electromagnetic valve and the second electromagnetic valve respectively; The hot water cylinder of heat exchange auxiliary device is connected with the first electric three passes valve, the first current divider and the second current divider with the tenth pipeline respectively by the first pipeline, the 9th pipeline, cold water storage cistern is connected with the second electric three passes valve by the 3rd pipeline, and the second electric three passes valve is connected with the 3rd current divider and the 4th current divider with the 6th pipeline respectively by the 4th pipeline; The utility model can in real time, the temperature of the measurement inside concrete of system, be the shaping different phase intelligence custom control plan of concrete hydrating.
Description
Technical field:
The utility model relates to concrete cooling, particularly relates to a kind ofly building the intelligent water-cooled system of concrete in mass.
Technical background:
Concrete in mass can produce a large amount of heats building in forming process, because concrete surface heat distributes very fast, center heat distributes slowly, therefore obvious temperature gradient can be formed at concrete center and concrete surface, produce corresponding thermal stresses, concrete drawing crack is formed crack.Correspond to the technological means controlling Volume Concrete Cracks generation to have from design angle to construction angle, wherein comparatively common are: select the cement of low hydration heat and batching, optimised coagulation soil match ratio, control temperature of concrete during construction, block placement and form etc. of optimizing structure, wherein the most practical and effective control method is exactly Water Cooling Technology.Start since united states bureau of reclamation first time in 1931 tests concrete water refrigeration technique on Ou Waxi (Owyhee) arch dam, concrete water refrigeration technique has been widely used and has approved in various concrete in mass building project.
Traditional Water Cooling Technology scheme self is existing defects in fact: traditional water cooled pipeline laying method adopts singly to enter singly to go out, the mode weaved throngh in concrete, such method to set up can not control inside concrete temperature gradient feature radially targeted specifically, also can along cooling water flow to path in produce new temperature gradient (the low heat absorption of water inlet temperature be fast, and the heat absorption of outlet temperature height is slow), like this not only bad for the original temperature gradient of reduction, script temperature gradient radially also can be made to become more complicated, be difficult to Forecast and control, moreover cooling water the temperature that is suitable for generally at about 30 DEG C, the too low meeting of temperature forms " cold hit " effect at tube circumference, the formation in aggravation crack, and the too high efficiency losing heat exchange of temperature, so how to prepare and the cooling water storing preference temperature is also a difficult problem in work progress, tradition water-cooling method is how realistic use directly uses normal-temperature water to cool, also or minority use warm water carry out heat exchange but cannot accurately control its feed temperature, bring uncertainty to control procedure, hot water after tradition singly enters the water-cooling project heat exchanging singly gone out in addition often directly emits, and cannot be used, both waste its material resources, create bad impact again on environment.
Traditional water-cool control scheme also also exists many deficiencies, and the way in past normally adopts certain Finite Element Method to carry out simulation and forecast, and the direction that control Water Cooling Technology is implemented and progress, then based on construction experience, artificially carries out sampling and regulating and controlling.Its weak point is, because the Unpredictability of atmospheric environment and the complexity of water cooled pipeline heat exchange limit, certain change is had compared with the result that actual water-cooled situation and finite element method for simulating go out, and the regulating power of conventional art is not enough, immediately cannot revise this change wherein, cause actual effect to follow planned target always far apart; Operating process can be caused to produce obvious error even mistake based on experimental, artificial sampling and regulation and control in addition, and cause regulation process delayed, affect Actual Control Effect of Strong; In addition architecture industry specification require as " highway bridge and culvert construction technique normalizing " etc. " temperature difference imported and exported of cooling water pipe should be less than or equal to 10 DEG C; and the rate of temperature fall watering building body should not be greater than 2.0 DEG C/d ", artificial water flowing cooling way is simple and crude and uncontrollable, far apart with actual needs.
Utility model content:
The purpose of this utility model is to provide a kind of intelligent water-cooled system of concrete in mass of carrying out intelligence to water-cooled speed in real time, controlling exactly.
Building an intelligent water-cooled system for concrete in mass, comprise heat-exchange device, heat exchange auxiliary device and control device;
Described heat exchanging pipe is the many pipelines be arranged in concrete in mass; At concrete in mass from top to bottom or from top to bottom, at interval of longitudinal height placement one deck pipeline of 0.8 ?1m, every one deck has some pipelines, from the edge of concrete in mass to center, the horizontal range at interval of 0.8 ?1m arranges a pipeline;
Described control device comprises controller, temperature pick up, the first electric three passes valve, the second electric three passes valve, the first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve, the 4th electrical ball valve, the first electromagnetic valve, the second electromagnetic valve; Controller is connected with temperature pick up, the first electric three passes valve, the second electric three passes valve, the first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve, the 4th electrical ball valve, the first electromagnetic valve and the second electromagnetic valve respectively; Temperature pick up has multiple, and be arranged in the first current divider, the 3rd current divider and concrete in mass respectively, in concrete in mass, multiple temperature pick up is disposed between two pipelines;
Described heat exchange auxiliary device comprises hot water cylinder, cold water storage cistern, the first current divider, the second current divider, the 3rd current divider, the 4th current divider; Hot water cylinder is connected with the first electric three passes valve, the first current divider and the second current divider with the tenth pipeline respectively by the first pipeline, the 9th pipeline, and the first electric three passes valve is connected with the first current divider and the second current divider with the 5th pipeline respectively by second pipe; Cold water storage cistern is connected with the second electric three passes valve by the 3rd pipeline, and the second electric three passes valve is connected with the 3rd current divider and the 4th current divider with the 6th pipeline respectively by the 4th pipeline; Water pump is provided with in hot water cylinder and cold water storage cistern; The pipeline that hot water cylinder is connected with the first current divider and the second current divider is respectively equipped with the second electromagnetic valve and the first electromagnetic valve; First current divider and the 3rd current divider respectively by many pipelines with in concrete in mass many go Cheng Guandao to be connected; First current divider is provided with the first electrical ball valve with the pipeline that in concrete in mass, many are gone Cheng Guandao to be connected, and the 3rd current divider is provided with the second electrical ball valve with the pipeline that in concrete in mass, many are gone Cheng Guandao to be connected; Second current divider is connected with many return conduits in concrete in mass respectively by many pipelines with the 4th current divider; The pipeline that second current divider is connected with many return conduits in concrete in mass is provided with the 4th electrical ball valve, and the pipeline that the 4th current divider is connected with many return conduits in concrete in mass is provided with the 3rd electrical ball valve; First electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve and the 4th electrical ball valve all comprise multiple valve, every root pipeline have a valve; The described Cheng Guandao of going and return conduits are changes.
For realizing the utility model object further, preferably, pipeline is the coating steel pipe of 76mm internal diameter, and joint is established in pipeline corner, often locates corner and all keeps angle to be 90 °.
Preferably, first pipeline keep its outer distance boundary 0.8 ?the distance of 1m arrange along concrete peripheral boundary.
The port of export of same pipeline and the horizontal range of entrance point control within 2m.
The pipeline of every one deck is longitudinally handled in 10cm up and down.
In described concrete in mass between same level layer two interval pipeline the pre-buried temperature pick up in position of each 0.4 ?0.5m of horizontal range, along duct length at interval of 4 ?6m length respectively settle place's temperature pick up in pipeline both sides, pipeline corner increases a temperature pick up, the distribution in radiation in the plane of concrete in mass in the integral arrangement of temperature pick up.
Described first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve and the 4th electrical ball valve are flow control valve.
Described second electromagnetic valve and the first electromagnetic valve are open and close controlling valve.
The intelligent water-cooled control method of concrete in mass of application said system, comprises the steps:
1) by finite element software optimization overall progress control program, extract the temperature information of its each timing node concrete in mass whole and part, store in the controller, be set to actual water-cooled schedule objective; Formulate rational concrete in mass internal temperature gradient level of control according to Practical Project characteristic, be accessed in advance in controller as control criterion;
2) controller obtains integral water-cooled speed control parameter and temperature gradient parameter by the temperature data analyzing the temperature pick up collection be embedded in concrete in mass, preset schedule objective in the controller by the comparison of integral water-cooled speed control parameter, revise and draw current required cooling water bulk temperature T and speed V; The temperature gradient level of control preset by the comparison of temperature gradient parameter distributes the individual temperature T of each tube-cooled water
0and speed V
0;
3) corresponding to the low inside and high outside feature radially distributed of concrete in mass interior temperature distribution, central core tube-cooled current are set with cooling velocity faster, namely lower temperature T
0larger speed V
0; Outer layer pipe cooling water flow with less cooldown rate, namely higher temperature T
0less speed V
0; Controller is embedded in the data of the temperature pick up in each current divider by Real-time Collection, obtains cold and hot current real-time temperature value T
1and T
2;
4) controller is according to analyzing each stock cooling water flow control temperature T drawn
0and speed V
0, in conjunction with the real-time temperature T of cold and hot current
1and T
2, inverse goes out the instant flow V of required hot and cold water
1and V
2, and its instruction is sent to each electrical ball valve;
T in formula
1and T
2for measured data, T
0and V
0for the controling parameters that control system analysis draws, it is all known quantity;
The open and-shut mode of controller Collaborative Control first electric three passes valve, the second electric three passes valve, the first electromagnetic valve, the second electromagnetic valve, in order to realize the circulation break-in of cooling water flow;
Controller, by the flow of control first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve, the 4th electrical ball valve, realizes combination cooling coolant-temperature gage T
0and speed V
0control, and then control water-cooled speed.
The three-way valve adopted in described heat exchange auxiliary device is electric three passes valve, by the break-in control instruction of executive control system, controls the flow direction of water.
The open and-shut mode valve adopted in described heat exchange auxiliary device is electromagnetic valve, by the open and close controlling instruction of executive control system, coordinates the flow direction of three-way valve to water to control.
The flow control valve adopted in described heat exchange auxiliary device is electrical ball valve, by the flow-control instruction of executive control system, allocates the temperature of cooling water and speed.
The sensor that the utility model is used for gathering water flow temperature in concrete internal temperature and current divider is PT100 type temperature pick up, and it has quick response, accurately reliable feature, by connecting temperature sensor, temperature information is fed back to control system.
Relative to prior art, the utility model tool has the following advantages:
1) the utility model heat exchanging pipe is in the plane in back-shaped layout, each plane layer is furnished with some pipelines, outermost pipeline keep its outer distance boundary 0.8 ?the distance of 1m be covered with whole border along concrete periphery, comparatively nexine pipeline goes forward one by one setting successively inwards, keep itself and outer layer pipe on radial distance 0.8 ?the interval of 1m, make the pipeline on four limits parallel all with it, this spacing distance is conducive to the heat absorption of cooling water.
2) distance controlling of same pipeline two intake-outlets of the utility model heat exchanging pipe is within 2m, is convenient to inspection and the management of pipeline; The port of the different pipeline of same layer is spaced apart to be arranged on concrete side dispersedly, avoids the concentrated Local cooling speed that causes of pipe end excessive, produces temperature gradient.
3) for ensureing water-cooled effect, keep on sagittal plane between adjacent two pipelines 0.8 ?the distance of 1m; The layout of each each pipeline of leveling course remains on sustained height as far as possible, if execution conditions do not allow different pipeline to be handled 10cm in the vertical; Set some leveling course pipelines according to Practical Project scale of construction situation, the pipe arrangement of varying level layer keep in the vertical 0.8 ?the distance of 1m, be beneficial to the overall Homogeneouslly-radiating of concrete.
4) the utility model PT100 type temperature pick up is that radiation is distributed in and water cooled pipeline same plane, some temperature pick ups are arranged in two discharge pipe middles, keep each 0.4 ?0.5m of its distance two side ducts, make it be distributed in adjacent channel centre position, and be incremented to planar central and outer peripheral areas according to this.The length of the quantity of pipeline side placement sensor pipeline thus determines, preferably set up place's sensor at interval of 4 ?6m along duct length side, increase and decrease is taken the circumstances into consideration by pipeline corner; The distribution in radiation in the plane of concrete in mass in the integral arrangement of temperature pick up.
5) flow direction of the utility model control device cooperation control electric three passes valve and the open and-shut mode of electromagnetic valve realize the break-in circulation of cooling water flow; By controlling the flow of each electrical ball valve, realize the control to combination cooling coolant-temperature gage and speed, and then control heat exchange rate.
6) interval circulation timei of the utility model control device control current break-in is corresponding with heat-exchange system overall heat exchange speed, it is a process first quick and back slow, consider that obvious localized temperature gradients appears in the longer concrete in mass inside that will cause of unidirectional water flowing time, the time interval of preferred break-in is set to 5min, 10min, corresponds respectively to concrete in mass inside and heats up and temperature higher stage, temperature lower-order section; Corresponding with it, control system reanalyses the real time data of each temperature pick up in the moment of each current break-in, upgrades the controling parameters made new advances, automatically adjusts water-cooled speed; Heat exchange auxiliary device enters hot water cylinder recycling by hot water after drainage heat exchange, improves the utilization ratio of thing, eliminates the preparation work of high temperature water.
Accompanying drawing illustrates:
Fig. 1 is the structural representation in the intelligent water-cooling system of building concrete in mass;
Fig. 2 is the heat exchanging pipe plane sectional drawing in Fig. 1;
Fig. 3 be A in Fig. 2 ?A sectional view;
Fig. 4 is traditional Water Cooling Technology scheme pipeline layort (mm);
Fig. 5 is the utility model embodiment Water Cooling Technology scheme pipeline layort (mm);
Fig. 6 is not for arrange water-cooling project Z=2m eminence 5d temperature field simulation figure;
Fig. 7 is traditional Water Cooling Technology scheme Z=2m eminence 5d temperature field simulation figure;
Fig. 8 is the utility model embodiment Water Cooling Technology scheme Z=2m eminence 5d temperature field simulation figure;
Fig. 9 is 5d thermal field, traditional Water Cooling Technology scheme X=6m place;
Figure 10 is the utility model embodiment Water Cooling Technology scheme X=6m place 5d temperature field simulation figure.
Shown in figure: hot water cylinder 1 ?1, cold water storage cistern 1 ?2, first current divider 2 ?1, second current divider 2 ?2, 3rd current divider 2 ?3, 4th current divider 2 ?4, first electric three passes valve 4 ?1, second electric three passes valve 4 ?2, first electrical ball valve 4 ?3, second electrical ball valve 4 ?4, 3rd electrical ball valve 4 ?5, 4th electrical ball valve 4 ?6, first electromagnetic valve 4 ?7, second electromagnetic valve 4 ?8, temperature pick up 6, first pipeline 3 ?1, second pipe 3 ?2, 3rd pipeline 3 ?3, 4th pipeline 3 ?4, 5th pipeline 3 ?5, 6th pipeline 3 ?6, 7th pipeline 3 ?7, 8th pipeline 3 ?8, 9th pipeline 3 ?9 and the tenth pipeline 3 ?10.
Detailed description of the invention
For understanding the utility model better, below in conjunction with accompanying drawing, the utility model is further described, but embodiment of the present utility model is not limit so.
Building an intelligent water-cooling system for concrete in mass, comprise heat exchanging pipe, heat exchange auxiliary device and control device;
As shown in Figure 2,3, heat exchanging pipe is the many pipelines be arranged in concrete in mass 1; At concrete in mass 1 from top to bottom or from top to bottom, at interval of 0.8 ?longitudinal height placement one deck pipeline of 1m, every one deck has some pipelines, from the edge of concrete in mass 1 to center, at interval of 0.8 ?the horizontal range of 1m arrange a pipeline, first pipeline is covered with whole border along concrete periphery, as the 7th pipeline 3 in Fig. 2 ?7 and the 8th pipeline 3 ?8, wherein the 7th pipeline 3 ?7 is for removing Cheng Guandao, 8th pipeline 3 ?8 be return conduits, the 7th pipeline 3 ?7 with the 8th pipeline 3 ?8 to be communicated with; Pipeline inwardly goes forward one by one setting successively, with outer adjacent channel radial distance be 0.8 ?1m; The discrepancy in elevation longitudinal between adjacent level layer pipeline is 0.8m; Preferred pipeline is the coating steel pipe of 76mm internal diameter, and joint is established in pipeline corner, often locates corner and all keeps angle to be 90 °.Preferably the port of export of same pipeline and the horizontal range of entrance point control within 2m, are convenient to inspection and the management of pipeline; The import and export openend of the different pipeline of preferred same level layer is spaced apart to be arranged on concrete side dispersedly, avoids the concentrated of pipe end to cause Local cooling excessive velocities, produces temperature gradient.
The layout of every layer of water cooled pipeline remains on same plane as far as possible, if execution conditions do not allow different pipeline to be handled 10cm down in the vertical.
Control device comprises controller 3, temperature pick up 6, first electric three passes valve 4 ?1, second electric three passes valve 4 ?2, first electrical ball valve 4 ?3, second electrical ball valve 4 ?the 4, the 3rd electrical ball valve 4 ?the 5, the 4th electrical ball valve 4 ?6, first electromagnetic valve 4 ?7, second electromagnetic valve 4 ?8; Controller 3 is connected with temperature pick up 6, first electric three passes valve 4 ?1, second electric three passes valve 4 ?2, first electrical ball valve 4 ?3, second electrical ball valve 4 ?the 4, the 3rd electrical ball valve 4 ?the 5, the 4th electrical ball valve 4 ?6, first electromagnetic valve 4 ?7 and the second electromagnetic valve 4 ?8 respectively; Temperature pick up 6 has multiple, be arranged on respectively the first current divider 2 ?the 1, the 3rd current divider 2 ?3 and concrete in mass 1 in, in concrete in mass 1, multiple temperature pick up 6 is disposed between two pipelines; In concrete in mass 1 between same level layer two interval pipeline the pre-buried temperature pick up 6 in position of each 0.4 ?0.5m of horizontal range, it is made to be distributed in the middle of adjacent two pipelines, keep along duct length at interval of 4 ?6m length respectively settle place's temperature pick up 6 in pipeline both sides, pipeline corner increases a temperature pick up 6, the distribution in radiation in the plane of concrete in mass 1 in the integral arrangement of temperature pick up 6.
As shown in Figure 1 (in figure, the direction of arrow is current one-way circulation process), heat exchange auxiliary device comprise hot water cylinder 1 ?1, cold water storage cistern 1 ?the 2, first current divider 2 ?the 1, second current divider 2 ?the 2, the 3rd current divider 2 ?the 3, the 4th current divider 2 ?4; Hot water cylinder 1 ?1 is connected with the first electric three passes valve 4 ?1, first current divider 2 ?1 and the second current divider 2 ?2 with the tenth pipeline 3 ?10 respectively by the first pipeline 3 ?the 1, the 9th pipeline 3 ?9, and the first electric three passes valve 4 ?1 is connected with the first current divider 2 ?1 and the second current divider 2 ?2 with the 5th pipeline 3 ?5 respectively by second pipe 3 ?2; Cold water storage cistern 1 ?2 is connected with the second electric three passes valve 4 ?2 by the 3rd pipeline 3 ?3, and the second electric three passes valve 4 ?2 is connected with the 3rd current divider 2 ?3 and the 4th current divider 2 ?4 with the 6th pipeline 3 ?6 respectively by the 4th pipeline 3 ?4; Hot water cylinder 1 ?1 and cold water storage cistern 1 ?be provided with water pump in 2, pumps water to the first pipeline 3 ?1 and the 3rd pipeline 3 ?in 3.
Hot water cylinder 1 ?1 with the first current divider 2 ?1 and second current divider 2 ?2 pipelines be connected are respectively equipped with the second electromagnetic valve 4 ?8 and first electromagnetic valve 4 ?7; First current divider 2 ?1 and the 3rd current divider 2 ?3 respectively by many pipelines with in concrete in mass 1 many go Cheng Guandao to be connected; First current divider 2 ?1 is provided with the first electrical ball valve 4 ?the 3, three current divider 2 ?3 with the many pipelines going Cheng Guandao to be connected in concrete in mass 1 and is provided with the second electrical ball valve 4 ?4 with the many pipelines going Cheng Guandao to be connected in concrete in mass 1; Second current divider 2 ?2 with the 4th current divider 2 ?4 to be connected with many return conduits in concrete in mass 1 respectively by many pipelines; Second current divider 2 ?2 pipelines be connected with many return conduits in concrete in mass 1 be provided with the 4th electrical ball valve 4 ?the 6, four current divider 2 ?4 pipelines be connected with many return conduits in concrete in mass 1 be provided with the 3rd electrical ball valve 4 ?5; First electrical ball valve 4 ?the 3, second electrical ball valve 4 ?the 4, the 3rd electrical ball valve 4 ?5 and the 4th electrical ball valve 4 ?6 all comprise multiple valve, every root pipeline has a valve.
Go Cheng Guandao and return conduits are above all instantaneous, because pass through Valve controlling, the direction of current converts frequently, just in order to express easily, the pipeline of journey is gone to be defined as Cheng Guandao in current first, the pipeline refluxed first is defined as return conduits, goes Cheng Guandao and return conduits there is no obvious separation, be connected together.
First electrical ball valve 4 ?the 3, second electrical ball valve 4 ?the 4, the 3rd electrical ball valve 4 ?5 and the 4th electrical ball valve 4 ?6 be flow control valve, control the water flow in corresponding pipeline; Second electromagnetic valve 4 ?8 and the first electromagnetic valve 4 ?7 is open and close controlling valve, controls the open and-shut mode of corresponding pipeline.Temperature pick up 6 is PT100 type temperature pick up preferably.
The utility model is installed on many pipelines of concrete in mass inside for realizing the exchange heat of inside concrete, is derived by heat from concrete in mass, to control the temperature gradient of concrete in mass entirety.
Cold water storage cistern 1 ?2 for the deposit to water at low temperature; Hot water cylinder 1 ?1 for the deposit to high temperature water and the Recovery of the hot water through heat exchange; Wherein each water tank is equipped with a water pump, and its power shows altogether required pipeline number and determines.
By finite element software optimization overall progress control program before water-cooled work starts, extract the temperature information of its each timing node concrete in mass 1 whole and part, be stored in controller 3, be set to actual water-cooled schedule objective; Manually formulate rational concrete in mass 1 internal temperature gradient level of control according to Practical Project characteristic, be accessed in advance in control system 3 as control criterion.
Controller 3 obtains integral water-cooled speed control parameter and temperature gradient parameter by the temperature data analyzing temperature pick up 6 collection be embedded in concrete in mass 1, be preset in the schedule objective in controller 3 by the comparison of integral water-cooled speed control parameter, revise and draw current required cooling water bulk temperature T and speed V; The temperature gradient level of control preset by the comparison of temperature gradient parameter further distributes the individual temperature T of each tube-cooled water
0and speed V
0.
Corresponding to the low inside and high outside feature radially distributed of concrete in mass 1 interior temperature distribution, central core tube-cooled current are set with cooling velocity faster, namely lower temperature T
0larger speed V
0; Outer layer pipe cooling water flow with less cooldown rate, namely higher temperature T
0less speed V
0.
Controller 3 is embedded in the data of the temperature pick up 6 in each current divider by Real-time Collection, obtains cold and hot current real-time temperature value T
1and T
2.
Controller 3 is according to analyzing each stock cooling water flow control temperature T drawn
0and speed V
0, in conjunction with the real-time temperature T of cold and hot current
1and T
2, inverse goes out the instant flow V of required hot and cold water
1and V
2(algorithm is as follows), and its instruction is sent to electrical ball valve.
T in formula
1and T
2for measured data, T
0and V
0for the controling parameters that control system analysis draws, it is also known quantity.Then above equation group becomes V
1and V
2the system of linear equations of unknown quantity, is convenient to solve.
Shown in this system, valve is electrified by-pass valve control, comprises each electric three passes valve, electrical ball valve and electromagnetic valve, for accepting the instruction that controller 3 is beamed back, and spontaneous response.
The open and-shut mode of controller 3 Collaborative Control first electric three passes valve 4 ?1, second electric three passes valve 4 ?2, first electromagnetic valve 4 ?7, second electromagnetic valve 4 ?8, in order to realize the circulation break-in of cooling water flow.
Controller 3 by control first electrical ball valve 4 ?the 3, second electrical ball valve 4 ?the 4, the 3rd electrical ball valve 4 ?the 5, the 4th electrical ball valve 4 ?6 flow, realize combination cooling coolant-temperature gage T
0and speed V
0control, and then control water-cooled speed.
For one the 7th pipeline 3 ?in 7 the cooling water of mixing water circulation and control procedure are described:
Hot water cylinder 1 ?water pump in 1 hot water is delivered to into the first pipeline 3 ?1, by the control of the first electric three passes valve 4 ?1, hot water is transferred to second pipe 3 ?2, subsequently hot water enter the first current divider 2 ?1 (the second electromagnetic valve 4 ?8 close), be split into some bursts of hot water streams (show actual demands of engineering and determine);
Cold water is delivered to into the 3rd pipeline 3 ?3 by the water pump in cold water storage cistern 1 ?2, by the control of the second electric three passes valve 4 ?2, cold water is entered the 3rd current divider 2 ?3 by the 4th pipeline 3 ?4, is split into some strands of cold water streams (corresponding with hot water stream);
By the first electrical ball valve 4 ?3 (flow control valves) afterwards particular flow rate hot water with by the second electrical ball valve 4 ?after 4 particular flow rate cold water the 7th pipeline 3 ?mix in 7, obtain predetermined temperature T
0and speed V
0cooling water, realize the accurate control to cooling water temperature and flow;
7th pipeline 3 ?cooling water in 7 get back to after by heat-exchange system heat exchange the 8th pipeline 3 ?in 8, after the heat absorbing heat-exchange system inside concrete, heat-exchanging water is heated, now the 4th electrical ball valve 4 ?6 states be standard-sized sheet, first electric three passes valve 4 ?1 closes in the direction of the 5th pipeline 3 ?5, first electromagnetic valve 4 ?7 states for opening, therefore current be introduced into the second current divider 2 ?2, and then by the tenth pipeline 3 ?10 be imported into hot water cylinder 1 ?1 realize recycling;
The above is the one-way circulation of single pipe and controls example, and other pipe condition are similar to above-mentioned, do not repeat one by one.
The utility model conveniently can realize the break-in of current in the same pipeline of heat-exchange system, and heat exchange accessory system is a laterally zygomorphic structure, therefore can be realized by the contrary operation with the folding situation of above-mentioned valve.
For one the 8th pipeline 3 ?in 8 the cooling water of mixing current recycled back and control procedure are described:
Hot water cylinder 1 ?water pump in 1 hot water is delivered to into the first pipeline 3 ?1, by the control of the first electric three passes valve 4 ?1, hot water is transferred to the 5th pipeline 3 ?5, subsequently hot water enter the second current divider 2 ?2 (the first electromagnetic valves 4 ?7 close), be split into some bursts of hot water streams (show actual demands of engineering and determine);
Cold water is delivered to into the 3rd pipeline 3 ?3 by the water pump in cold water storage cistern 1 ?2, by the control of the second electric three passes valve 4 ?2, cold water is entered the 4th current divider 2 ?4 by the 6th pipeline 3 ?6, is split into some strands of cold water streams (corresponding with hot water stream);
By the 4th electrical ball valve 4 ?6 (flow control valves) afterwards particular flow rate hot water with by the 3rd electrical ball valve 4 ?after 5 particular flow rate cold water the 8th pipeline 3 ?mix in 8, obtain predetermined temperature T
0and speed V
0cooling water, realize the accurate control to cooling water temperature and flow;
8th pipeline 3 ?cooling water in 8 get back to after by heat-exchange system heat exchange the 7th pipeline 3 ?in 7, after the heat absorbing heat-exchange system inside concrete, heat-exchanging water is heated, now the first electrical ball valve 4 ?3 states be standard-sized sheet, first electric three passes valve 4 ?1 closes in the direction of second pipe 3 ?2, second electromagnetic valve 4 ?8 states for opening, therefore current be introduced into the first current divider 2 ?1, and then by the 9th pipeline 3 ?9 be imported into hot water cylinder 1 ?1 realize recycling;
Interval circulation timei of current break-in is corresponding with heat-exchange system overall heat exchange speed, it is a process first quick and back slow, consider that obvious localized temperature gradients appears in longer concrete in mass 1 inside that will cause of unidirectional water flowing time, the time interval of preferred break-in is set to 5min, 10min, corresponds respectively to concrete in mass 1 inside and heats up and temperature higher stage, temperature lower-order section; Corresponding with it, control system reanalyses the real time data of each temperature pick up in the moment of each current break-in, upgrades the controling parameters made new advances, automatically adjusts water-cooled speed.
Embodiment
The concrete in mass block being of a size of 14m (X) × 6m (Y) × 4m (Z) using one gets C30 concrete as object, and its match ratio is as following table 1.Utilize ANSYS finite element software to carry out traditional Water Cooling Technology, technical solutions of the utility model and do not arrange water-cooled three kinds of schemes Temperature Field Simulation simulation, adopt solid70 mesh discretization concrete, the effect of fluid116 unit simulation water pipe, material calculation is set to 1h.Environment temperature is decided to be 20 DEG C, concrete molding temperature 25 DEG C, pipe diameter 80mm (galvanized iron conduit), and Adiabatic temperature rise of concrete curve adopts complex indexes formula, hydration heat of cement total amount Q used
0=330kJ/kg, the thermodynamical parameter of concrete and cooling water is as shown in following table 2,3:
Table 1 concrete construction match ratio (kg/m
3)
| Title | Cement | Water | Sand | Stone | Admixture | Admixture II |
| Ⅰ | ||||||
| Consumption | 450 | 160 | 819 | 920 | 9.24 | 42.00 |
Table 2 concrete thermal parameters and fringe conditions
Table 3 cooling water heat mechanics parameter
The stringing scheme that tradition Water Cooling Technology stringing scheme and the utility model are taked all arranges 3 layers of pipeline, and the height of the Z-direction of three layers of pipeline is respectively 1m, 2m and 3m.For the benefit of comparison result, two kinds of Water Cooling Technology schemes adopt the water flowing condition of average equal (temperature and speed) at each layer, pipeline overall length is also substantially suitable.
As shown in Figure 4, adopt uninterrupted water flowing mode continuously to flow to the other end from pipeline one end, wherein intermediate layer (2m eminence) pipeline enters coolant-temperature gage is 28 DEG C to tradition Water Cooling Technology piping mode (plane), and flow is 1.4m
3/ h; The coolant-temperature gage that enters of levels (1m, 3m eminence) pipeline is 32 DEG C, and flow is 1.2m
3/ h.
The water-cooling project piping mode (plane) that the present embodiment is taked as shown in Figure 5, adopt the alternately flowing in each pipeline of cooling water circulation break-in mode, flowing alternating time intervals for ease of calculating water intaking is 1h, and each ducted cooling water is unified changes the flow direction.Wherein intermediate layer (2m eminence) three pipelines enter coolant-temperature gage and are respectively 25 DEG C, 28 DEG C, 31 DEG C, and flow is respectively 1.6m
3/ h, 1.4m
3/ h, 1.2m
3/ h (from inner ring to outer ring); Each three pipelines of levels (1m, 3m eminence) enter coolant-temperature gage and are respectively 29 DEG C, 32 DEG C, 35 DEG C, and flow is respectively 1.4m
3/ h, 1.2m
3/ h, 1.0m
3/ h (from inner ring to outer ring).
Consider actual pipe arrangement situation, by same level layer inner ring install pipeline in integer rice position (1m, 2m and 3m), every one deck centre circle pipeline raises 10cm on inner ring pipeline level basis, and outer ring pipeline reduces 10cm on inner ring pipeline level basis.
Be illustrated in figure 6 and water-cooling project Z=2m eminence 5d thermal field is not set, concrete in mass inner section isotherm E=54 DEG C, F=61 DEG C, G=68 DEG C, H=75 DEG C, the highest temperature appears at kernel of section position, numerical value is 76.758 DEG C, and Temperature Distribution is radially decremented to concrete external boundary.
Fig. 7 is traditional Water Cooling Technology scheme Z=2m eminence 5d thermal field, concrete in mass inner section isotherm C=35 DEG C, D=40 DEG C, E=45 DEG C, F=50 DEG C, G=55 DEG C, H=60 DEG C, and the highest temperature appears at y=0 one end, downstream, cross section, and numerical value is 60.230 DEG C.Fig. 7 shows, and around water cooled pipeline, local presents certain temperature gradient change, increases progressively gradually on the whole, show obvious temperature gradient in y-axis direction while remaining its low inside and high outside temperature feature radially distributed along y-axis negative direction temperature.
Fig. 8 is the present embodiment Water Cooling Technology scheme Z=2m eminence 5d thermal field.Concrete in mass inner section isotherm C=35 DEG C in figure, D=40 DEG C, E=45 DEG C, F=50 DEG C, the highest temperature is distributed in nexine two pipeline inner peripheral region, and maximum value is 54.157 DEG C.Diagram is presented at local around water cooled pipeline and presents certain temperature gradient change, and Temperature Distribution maintains its low inside and high outside feature radially distributed on the whole.
Fig. 9 is traditional Water Cooling Technology scheme X=6m eminence 5d thermal field.Concrete in mass inner section isotherm C=35 DEG C in figure, D=40 DEG C, E=45 DEG C, F=50 DEG C, G=55 DEG C, H=60 DEG C.Diagram is presented at around water cooled pipeline and has occurred obvious temperature gradient in subrange, and wherein maximum temperature difference reaches nearly 21 DEG C, and its temperature gradient distribution scope is less, and consequent thermal stresses is easy to cause the concrete cracking along around water pipe path.
Figure 10 is the present embodiment Water Cooling Technology scheme X=6m eminence 5d thermal field.Concrete in mass inner section isotherm C=35 DEG C in figure, D=40 DEG C, E=45 DEG C, F=50 DEG C.The temperature gradient distribution scope of diagram display water pipe periphery subrange is comparatively wider in Fig. 6, and the temperature difference is less, and wherein maximum temperature gradient is only 12 DEG C, and such control effects is obviously conducive to reducing even to be stopped to form crack along the concrete around water pipe path.
In sum, comparison diagram 6, Fig. 7, Fig. 8 analog result can be seen, the maximum temperature that Z=2m eminence cross section 5d (120h) three kinds of technical schemes produce is respectively 76.758 DEG C, 60.230 DEG C, 54.157 DEG C, wherein traditional Water Cooling Technology scheme reduces 16.5 DEG C than the scheme highest temperature not arranging water-cooled, the present embodiment Water Cooling Technology scheme again reduces 6.1 DEG C than traditional Water Cooling Technology scheme highest temperature, the temperature gradient of the inside concrete produced is minimum, and its thermal stresses produced also can be minimum; In addition, the present embodiment Water Cooling Technology scheme avoids the obvious temperature gradient in y direction that traditional Water Cooling Technology scheme can cause, thermal field and the concrete hydrating heat similarity that water-cooled is not set, largely remain its original interior high other places once radially-arranged temperature feature, globality is better, is conducive to the generation controlling concrete internal temperature stress like this.
Composition graphs 7, Fig. 8, Fig. 9, Figure 10 analog result can be seen, in the distribution of temperature gradient that this programme water cooled pipeline periphery is formed, the traditional Water Cooling Technology scheme of obvious ratio mild and evenly, the thermal stresses that cooling pipe periphery produces can better be reduced like this, be conducive to controlling pipeline and produce along the crack in footpath.
Claims (8)
1. building the intelligent water-cooled system of concrete in mass, it is characterized in that, comprising heat-exchange device, heat exchange auxiliary device and control device;
Described heat exchanging pipe is the many pipelines be arranged in concrete in mass; At concrete in mass from top to bottom or from top to bottom, at interval of longitudinal height placement one deck pipeline of 0.8 ?1m, every one deck has some pipelines, from the edge of concrete in mass to center, the horizontal range at interval of 0.8 ?1m arranges a pipeline;
Described control device comprises controller, temperature pick up, the first electric three passes valve, the second electric three passes valve, the first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve, the 4th electrical ball valve, the first electromagnetic valve, the second electromagnetic valve; Controller is connected with temperature pick up, the first electric three passes valve, the second electric three passes valve, the first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve, the 4th electrical ball valve, the first electromagnetic valve and the second electromagnetic valve respectively; Temperature pick up has multiple, and be arranged in the first current divider, the 3rd current divider and concrete in mass respectively, in concrete in mass, multiple temperature pick up is disposed between two pipelines;
Described heat exchange auxiliary device comprises hot water cylinder, cold water storage cistern, the first current divider, the second current divider, the 3rd current divider, the 4th current divider; Hot water cylinder is connected with the first electric three passes valve, the first current divider and the second current divider with the tenth pipeline respectively by the first pipeline, the 9th pipeline, and the first electric three passes valve is connected with the first current divider and the second current divider with the 5th pipeline respectively by second pipe; Cold water storage cistern is connected with the second electric three passes valve by the 3rd pipeline, and the second electric three passes valve is connected with the 3rd current divider and the 4th current divider with the 6th pipeline respectively by the 4th pipeline; Water pump is provided with in hot water cylinder and cold water storage cistern; The pipeline that hot water cylinder is connected with the first current divider and the second current divider is respectively equipped with the second electromagnetic valve and the first electromagnetic valve; First current divider and the 3rd current divider respectively by many pipelines with in concrete in mass many go Cheng Guandao to be connected; First current divider is provided with the first electrical ball valve with the pipeline that in concrete in mass, many are gone Cheng Guandao to be connected, and the 3rd current divider is provided with the second electrical ball valve with the pipeline that in concrete in mass, many are gone Cheng Guandao to be connected; Second current divider is connected with many return conduits in concrete in mass respectively by many pipelines with the 4th current divider; The pipeline that second current divider is connected with many return conduits in concrete in mass is provided with the 4th electrical ball valve, and the pipeline that the 4th current divider is connected with many return conduits in concrete in mass is provided with the 3rd electrical ball valve; First electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve and the 4th electrical ball valve all comprise multiple valve, every root pipeline have a valve; The described Cheng Guandao of going and return conduits are changes.
2. according to claim 1ly it is characterized in that building the intelligent water-cooled system of concrete in mass, pipeline is the coating steel pipe of 76mm internal diameter, and joint is established in pipeline corner, often locates corner and all keeps angle to be 90 °.
3. according to claim 1ly to it is characterized in that building the intelligent water-cooled system of concrete in mass, every layer of first pipeline keep its outer distance boundary 0.8 ?the distance of 1m arrange along concrete peripheral boundary.
4. according to claim 1ly it is characterized in that building the intelligent water-cooled system of concrete in mass, the port of export of same pipeline and the horizontal range of entrance point control within 2m.
5. according to claim 1ly it is characterized in that building the intelligent water-cooled system of concrete in mass, the pipeline of every one deck is longitudinally handled in 10cm up and down.
6. according to claim 1ly building the intelligent water-cooled system of concrete in mass, it is characterized in that, in described concrete in mass between same level layer two interval pipeline the pre-buried temperature pick up in position of each 0.4 ?0.5m of horizontal range, along duct length at interval of 4 ?6m length respectively settle place's temperature pick up in pipeline both sides, pipeline corner increases a temperature pick up, the distribution in radiation in the plane of concrete in mass in the integral arrangement of temperature pick up.
7. according to claim 1ly it is characterized in that building the intelligent water-cooled system of concrete in mass, described first electrical ball valve, the second electrical ball valve, the 3rd electrical ball valve and the 4th electrical ball valve are flow control valve.
8. according to claim 1ly it is characterized in that building the intelligent water-cooled system of concrete in mass, described second electromagnetic valve and the first electromagnetic valve are open and close controlling valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520309312.0U CN204662448U (en) | 2015-05-13 | 2015-05-13 | Building the intelligent water-cooled system of concrete in mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520309312.0U CN204662448U (en) | 2015-05-13 | 2015-05-13 | Building the intelligent water-cooled system of concrete in mass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204662448U true CN204662448U (en) | 2015-09-23 |
Family
ID=54132844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520309312.0U Withdrawn - After Issue CN204662448U (en) | 2015-05-13 | 2015-05-13 | Building the intelligent water-cooled system of concrete in mass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204662448U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155540A (en) * | 2015-05-13 | 2015-12-16 | 陈志刚 | Under-construction mass concrete intelligent water cooling control method and system |
| CN105220881A (en) * | 2015-10-14 | 2016-01-06 | 天津城建大学 | Steel pipe concrete arch rib intelligent temperature control system |
| CN107010993A (en) * | 2017-05-15 | 2017-08-04 | 中国十九冶集团有限公司 | Cooling system for mass concrete |
| CN109338895A (en) * | 2018-11-23 | 2019-02-15 | 中铁十二局集团第工程有限公司 | Mass concrete Intelligent Hybrid cooling system |
| CN109469064A (en) * | 2018-11-21 | 2019-03-15 | 中国电建集团成都勘测设计研究院有限公司 | Concrete cooling pipe device |
| CN113211597A (en) * | 2021-04-16 | 2021-08-06 | 交通运输部公路科学研究所 | Infrared self-adaption device and method for cement concrete pavement facility |
-
2015
- 2015-05-13 CN CN201520309312.0U patent/CN204662448U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155540A (en) * | 2015-05-13 | 2015-12-16 | 陈志刚 | Under-construction mass concrete intelligent water cooling control method and system |
| CN105220881A (en) * | 2015-10-14 | 2016-01-06 | 天津城建大学 | Steel pipe concrete arch rib intelligent temperature control system |
| CN107010993A (en) * | 2017-05-15 | 2017-08-04 | 中国十九冶集团有限公司 | Cooling system for mass concrete |
| CN109469064A (en) * | 2018-11-21 | 2019-03-15 | 中国电建集团成都勘测设计研究院有限公司 | Concrete cooling pipe device |
| CN109338895A (en) * | 2018-11-23 | 2019-02-15 | 中铁十二局集团第工程有限公司 | Mass concrete Intelligent Hybrid cooling system |
| CN109338895B (en) * | 2018-11-23 | 2023-07-25 | 中铁十二局集团第一工程有限公司 | Intelligent mixed cooling system for mass concrete |
| CN113211597A (en) * | 2021-04-16 | 2021-08-06 | 交通运输部公路科学研究所 | Infrared self-adaption device and method for cement concrete pavement facility |
| CN113211597B (en) * | 2021-04-16 | 2023-01-13 | 交通运输部公路科学研究所 | Infrared self-adaption device and method for cement concrete pavement facility |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105155540A (en) | Under-construction mass concrete intelligent water cooling control method and system | |
| CN204662448U (en) | Building the intelligent water-cooled system of concrete in mass | |
| CN204662991U (en) | A kind of concrete in mass water cooled pipeline system | |
| CN206090315U (en) | Concrete water cooling system | |
| CN203616679U (en) | Cooling water circulating control device for mass concrete | |
| CN204059978U (en) | The temperature-controlled cooling system of large volume concrete structural | |
| CN102094528B (en) | Method for arranging large-size concrete cooling water pipe | |
| CN104133052B (en) | A kind of Temperature Controlling of Mass Concrete effect overall process evaluation method | |
| CN108469185B (en) | A kind of antifreeze return water temperature control method of indirect air cooling system | |
| Liu et al. | Optimal energy consumption analysis of natural gas pipeline | |
| CN110414046B (en) | Temperature control anti-cracking method for lining structure low-heat cement concrete | |
| CN107559945A (en) | A kind of waterpower self-regulation heating system and self-adjusting method | |
| CN105178605A (en) | Large-volume concrete intelligent water introducing system | |
| CN109558673A (en) | A kind of natural gas transmission and distribution system Adaptability Analysis research method | |
| CN203716545U (en) | Cooling tower of cable film structure | |
| CN111980027A (en) | Intelligent volute concrete temperature control system and method | |
| CN112947626B (en) | Variable topology grid for dam temperature control and control method thereof | |
| CN202850028U (en) | Circulating water cooling device for inner portion of concrete with large size | |
| CN107152709A (en) | A kind of efficient cascade utilization heating system that water is mixed with once net backwater | |
| CN105674764A (en) | Inner and outer air flow guiding device for cooling tower and flow guiding method | |
| CN104819993B (en) | A kind of cooling water pipe tube wall heat exchange coefficient test device and method of testing | |
| CN208705748U (en) | A kind of mass concrete intelligent temperature control device | |
| CN110569553A (en) | Method for controlling cooling age of coal ash doped low-calorific-value lining concrete through water | |
| CN111927463B (en) | Freezing pipe arrangement method in multi-row pipe freezing engineering | |
| CN207214205U (en) | A kind of efficient cascade utilization heating system that water is mixed with once net backwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150923 Effective date of abandoning: 20171114 |