CN109374676A - Study the experimental method that matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer - Google Patents
Study the experimental method that matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer Download PDFInfo
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Abstract
The invention discloses the experimental methods that research matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer, belong to hot rolled plate (base) section cooling field.The present invention uses special experimental provision, the device includes that gas circuit unit, water way unit, nozzle, matrix form arrangement cut-out governing unit and data acquire integrated processing unit, nozzle is set on matrix form arrangement cut-out governing unit, and data acquire temperature, transmission speed of the flow of medium in integrated processing unit acquisition water way unit, pressure, temperature and plate (base) each exemplary position etc. and focus on.The present invention overcomes the deficiencies of the heat transfer boundary research in the prior art to plate (base), injector spacing can be achieved in the adjusting in plane x, y direction, the adjusting of height of jet and the adjusting of flow angle, control system can realize the automatic adjustment of nozzle group pressure, flow and independent pressure, flow, so as to study close to the either statically or dynamically heat-transfer character of the plate (base) under the conditions of production status.
Description
Technical field
The present invention relates to hot rolled plate (base) section cooling fields, quick more specifically to research matrix arrangement nozzle
The experimental method of cooling high temperature plate (base) heat transfer.
Background technique
With acutely gradualling mature increasingly with size control techniques for steel market competition, metallicity index increasingly at
For the focus of the competition of World Iron & Steel industry.Plate accounts for about 30% share in world steel product, and performance improvement undoubtedly has
Huge economic value and important social benefit.And plate (base) performance depends on the microstructure of metal inside, microstructure
Formation it is closely related with the distribution of temperature, level and variable gradient with distribution.Heat transfer boundary characteristic directly decides temperature
The regularity of distribution, therefore study heat transfer boundary characteristic, and then control metal inside microstructure have to plate (base) performance improvement
Decisive influence.
In industrial production, in order to guarantee plate (base) in width direction, the cooling uniformity of length direction, it is most of all to use
Matrix form arrangement mode, i.e., arrange 2 rows or more above plate (base), and 2 or more nozzles are set in every arrangement.This kind of arrangement of nozzles side
Influence of the formula to diabatic process has the following characteristics that region is known as impact zone immediately below nozzle, and heat transfer type is with forced convection
Main, intensity of cooling is maximum；And be concurrent flow area two adjacent nozzle intermediate regions, this region vapor film is by surface of steel plate and water
It separates, conduct heat severe exacerbation, and it is stable film boiling in the region that intensity of cooling, which becomes smaller,.Just because of these features, so that plate
(base) embodies periodic feature with the heat transfer boundary of length direction in the width direction in mobile cooling procedure.For example, even
Laminar cooling process in casting process, steel billet pass through each row's nozzle, arrangement feelings of the heat flux distribution according to nozzle with certain speed
There is the regularity distribution of strong, weak variation in condition, at this time arrangement spacing of the temperature uniformity in steel billet depending on nozzle, and temperature
Fall off rate depends on spray speed, height, angle of nozzle etc..
Up to the present, most of document mainly uses numerical simulation side to the research of steel billet cooling procedure both at home and abroad
Method, by empirical equation or take region it is simplified, it is Homogenization Treatments in the way of obtain heat transfer boundary, then carry out heat transfer and grind
Study carefully.Also part document carries out experimental study to steel billet cooling procedure, but in the course of the research since experiment condition limits, only platform
Stepwise changes partial parameters, analyzes their influences to diabatic process, but there is no consider week possessed by heat transfer boundary
Phase property feature, also without illustrating influence of this periodic feature to board briquette field.
It is particularly worth mentioning that having researcher's property coefficient of heat transfer research cycle at present and devising the measurement coefficient of heat transfer
Device, what is mainly studied is that steel billet heat transfer coefficient periodically changes during intermittent cold-zone, that is, allows cooled workpiece primary
By arranging well laid cooling nozzles, non-cooled or backheat shape is in when leaving nozzle spray regime and being transmitted to next nozzle
State.Have related patents in the prior art to disclose, such as publication number: CN103792256A, publication date: on May 14th, 2014, invention
Create title: a kind of experimental provision measuring cyclical heat transmission coefficient, this application research: due to the flow field of impact jet flow
Design feature, the region between the underface and adjacent nozzle of nozzle will appear periodically heat transfer boundary characteristic, i.e., same
Moment periodical heat transfer boundary characteristic；But this application is not also comprehensive for the research on periodic heat transfer boundary, can not be complete
Any adjusting at injector spacing in plane x, y direction, the group-wise adjusting and the operation of slab of amount of water sprayed, jet velocity
The continuity of speed is adjusted, so that the structure optimization that cannot complete plate (base) cooling uniform Journal of Sex Research and cooling device is ground
Study carefully.In addition, its cooled workpiece is circle, the heat transfer characteristic of impact zone can be studied, but be unable to complete surface plate (base)
In be cooled water submerged advection area characteristic, industrial diabatic process essence cannot be embodied.Therefore, still there is very great Cheng
Optimization space on degree.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the shortcomings of the heat transfer boundary research to plate (base) in the prior art, one kind is provided
Study the experimental method close to the either statically or dynamically heat-transfer character of the plate (base) under the conditions of production status.The invention solves technology
Problem includes: the adjusting that (1) influences the structural parameters of heat-transfer character, the predominantly nozzle of matrix arrangement in x, the spacing in the direction y,
It is adjusted in the height in the direction z, spray angle, nozzle diameter and type etc.；(2) adjusting of the operating parameter of heat-transfer character is influenced,
Predominantly flow, the pressure of plate (base) exemplary position temperature, the detection of coolant temperature and single-nozzle or group's nozzle
Detection and adjusting；(3) functions such as overall process, the acquisition of diversiform data, processing, trend demonstration are realized.It is asked by these technologies
The solution of topic, may be implemented plate (base) primary condition, boundary condition and plate (base) internal temperature field change over time it is mutual
The research of Coupling Rule, to provide support to strengthen the optimization of cooling device structure under production working condition.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
Research matrix arrangement nozzle of the invention is quickly cooled down the experimental method of high temperature plate (base) heat transfer, use research matrix
Nozzle of arranging is quickly cooled down the experimental provision of high temperature plate (base) heat transfer, follows the steps below:
A, steel billet is put into heating unit to be evenly heated, and be passed through protective atmosphere to prevent its oxidation.
B, it is arranged between the height of jet, flow angle and nozzle of nozzle by matrix form arrangement cut-out governing unit
Spacing adjusts the effluxvelocity of nozzle by gas circuit unit and water way unit；
C, at the end of heating steel billet, opening gas circuit unit and water way unit makes nozzle carry out jet stream punching by the speed of setting
It hits, adjusting gear unit is driven it by the speed of setting；
D, after heating steel billet, steel billet is moved to gear unit by coming out of the stove unit, gear unit drive steel billet with
Setting speed is driven, and nozzle carries out jet impulse cooling in transmission process, and temperature collecting cell carries out adopting for steel billet real time temperature
Collection；
E, when steel billet is transmitted to gear unit end, primary experiment is completed, and records experimental data；
F, change the spacing between height of jet, flow angle, effluxvelocity and the nozzle of nozzle, repeat real
It tests, obtains rule of each factor to billet surface heat transfer boundary for influencing impact boiling heat transfer, processing analysis data must tap
Base surface heat transfer boundary condition is in the complicated heat exchange rule strengthened in cooling procedure.
Further, research matrix arrangement nozzle is quickly cooled down the experimental provision of high temperature plate (base) heat transfer, including gas circuit
Unit, water way unit, nozzle, matrix form arrangement cut-out governing unit and temperature collecting cell, water way unit are connected simultaneously with nozzle
For providing injection water to nozzle, gas circuit unit is connected with water way unit and is used to provide gas pressure to water way unit, thus
The jet velocity of nozzle is adjusted, nozzle is set on matrix form arrangement cut-out governing unit, matrix form arrangement cut-out governing unit
The spacing between the direction x, y, temperature collecting cell are used for respectively for height of jet, flow angle and nozzle for adjusting nozzle
Acquisition steel billet temperature information is simultaneously handled.
Further, water way unit includes the water tank and large water tank being connected by pipeline, is connected on large water tank more
A distributing water tank, each distributing water tank lower section are provided with hose, and the end of hose is provided with nozzle.
Further, water pump, Water flow control valve and stream are provided on the connecting line between water tank and large water tank
Meter, large water tank top are additionally provided with thermometer, pressure gauge and safety-valve, and large water tank passes through connecting tube and distributing water tank phase
Even, flowmeter is provided in connecting tube.
Further, gas circuit unit includes air accumulator and air compressor, and the outlet side of air accumulator is connected with large water tank,
And gas pressure maintaining valve and pressure gauge are provided on connected pipeline.
Further, temperature collecting cell includes thermocouple, data collecting instrument and processing terminal, and thermocouple temperature measurement end is buried
It sets in mobile steel billet, and thermocouple is connected by compensating wire with data collecting instrument, data collecting instrument and processing terminal phase
Even, and temperature data is transferred to processing terminal and is handled.
Further, matrix form arrangement cut-out governing unit includes overarm brace, crossbeam and cut-out governing frame, along steel billet
The both ends of moving direction are respectively arranged with overarm brace, and crossbeam is connected between the overarm brace at both ends, and crossbeam can be along crossbeam
The short transverse of bracket moves up and down, and is arranged at intervals with multiple cut-out governing framves on crossbeam along its length, cut-out governing frame can
To move along the length of crossbeam and short transverse, nozzle is set on cut-out governing frame.
Further, cut-out governing frame includes upper frame and the side frame that extends downwardly positioned at upper frame both ends, side frame and crossbeam
It is connected, nozzle is then set on upper frame.
Further, it is spaced apart on overarm brace along short transverse and is equipped with multiple fixation holes, crossbeam passes through screw threads for fastening
It is connect with overarm brace, is spaced apart along its length on crossbeam and is equipped with multiple fixation holes, along height on the side frame of cut-out governing frame
Direction, which is spaced apart, is equipped with multiple fixation holes, and cut-out governing frame is connect by screw threads for fastening with crossbeam, on the upper frame of cut-out governing frame
It is spaced apart equipped with multiple for placing the putting hole of nozzle.
It further, further include the heating unit set gradually, come out of the stove unit and gear unit, the heated unit of steel billet
Gear unit is sent to by unit of coming out of the stove after heating, gear unit is set to below nozzle and steel billet is driven constantly to move.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) research matrix of the invention arrangement nozzle is quickly cooled down the experimental method of high temperature plate (base) heat transfer, using special
Experimental provision, the device have the heat transfer testing function under group's nozzle three dimensionality, multi-angle collective effect, it can be achieved that pressure
Power, flow single group or multiple group type are adjusted, so as to study spy of either statically or dynamically conducting heat close to the plate (base) under the conditions of production status
Property.
(2) research matrix of the invention arrangement nozzle is quickly cooled down the experimental method of high temperature plate (base) heat transfer, can be added
Detection, the acquisition, collection of the internal parameters such as exemplary position temperature and coolant temperature, pressure, flow of hot stove temperature, plate (base)
At analysis, can study that primary condition, boundary condition and plate (base) internal temperature field of plate (base) change over time intercouples
Rule, its main feature is that it is observed that momentary fluctuation characteristic, so as to study the transient process rule of heat transfer.
Detailed description of the invention
Fig. 1 is that the research matrix arrangement nozzle used in the present invention is quickly cooled down the experimental provision of high temperature plate (base) heat transfer
Structural schematic diagram；
Fig. 2 is the structural schematic diagram of water way unit in the present invention；
Fig. 3 is the structural schematic diagram of single group water way unit in the present invention；
Fig. 4 is three view structural schematic diagrams of matrix form arrangement cut-out governing unit in the present invention,
Wherein (a) is schematic front view, (b) is schematic side view, (c) is schematic top plan view；
Fig. 5 is the structural schematic diagram of cut-out governing frame in the present invention.
Label declaration in schematic diagram:
100, water tank；110, water pump；120, Water flow control valve；130, flowmeter；
200, air accumulator；210, air compressor；220, gas pressure maintaining valve；230, pressure gauge；
300, large water tank；310, thermometer；320, pressure gauge；330, safety-valve；340, flowmeter；350, water is shunted
Case；360, hose；370, nozzle；380, connecting tube；
400, heating unit；410, it comes out of the stove unit；500, gear unit；600, steel billet；
710, cut-out governing frame；720, crossbeam；730, overarm brace；800, processing terminal；810, data collecting instrument.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention will be further described with reference to the examples below.
Embodiment 1
The problems such as in order to solve uneven steel plate internal and external temperature, unbalanced stress and camber of sheet and Summer and winter water temperature, this
Embodiment provides the experimental provision that a kind of research matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer, in industrial production,
In order to guarantee plate (base) in width direction, the cooling uniformity of length direction, it is most of all to use matrix form arrangement mode, that is, exist
Above plate (base) more than 2 rows of arrangement, 2 or more nozzles are set in every arrangement.Influence of this kind of arrangement of nozzles mode to diabatic process
Have the following characteristics that region is known as impact zone immediately below nozzle, for heat transfer type based on forced convection, intensity of cooling is maximum；And
It is concurrent flow area two adjacent nozzle intermediate regions, this region vapor film separates surface of steel plate and water, and conduct heat severe exacerbation,
Intensity of cooling becomes smaller, and is stable film boiling in the region.Just because of these features, so that plate (base) is in mobile cooling procedure
In embody periodic feature with the heat transfer boundary of length direction in the width direction.Steel billet periodic conducts heat boundary research to steel billet
Heat treatment and performance influence are great, and the experimental provision of the present embodiment is used to measure temperature, the hot-fluid of steel billet cooling surface position
Density and coefficient of heat transfer quasi-periodic boundary condition, and then the HEAT TRANSFER LAW on steel billet periodic boundary is studied, to raising steel billet
Output and quality is of great importance.Change the vibration of periodic boundary condition by changing the parameters such as height of jet and effluxvelocity
Width changes the parameters such as injector spacing, array pitch and steel billet transmission speed to change the period of periodic boundary condition, so as to logical
It crosses the experimental provision and changes period and amplitude, study the steel billet periodic heat transfer boundary condition pair under different cycles and amplitude condition
The influence of HEAT TRANSFER LAW.
As Figure 1-Figure 5, the research matrix arrangement nozzle of the present embodiment is quickly cooled down the experiment of high temperature plate (base) heat transfer
Device, including gas circuit unit, water way unit, nozzle 370, matrix form arrangement cut-out governing unit and temperature collecting cell, wherein
Water way unit is connected with nozzle 370 and for providing injection water to nozzle 370, gas circuit unit be connected with water way unit and be used for
Water way unit provides gas pressure, and so as to adjust the jet velocity of nozzle 370, nozzle 370 is set to matrix form arrangement nozzle tune
It saves on unit, the height of jet, flow angle and nozzle 370 that matrix form arrangement cut-out governing unit is used to adjust nozzle 370 divide
Spacing not between the direction x, y (i.e. length, width direction), temperature collecting cell is for acquiring 600 temperature information of steel billet simultaneously
Processing.
Specifically as shown in Figure 1, water way unit includes the water tank 100 and large water tank being connected by pipeline in the present embodiment
300, water pump 110, Water flow control valve 120 and flowmeter are provided on the connecting line between water tank 100 and large water tank 300
130, different hydraulic pressure can control by regulating water flow control valve 120 to control the jet velocity of nozzle 370, flowmeter
130 can monitor moisture flow in real time, and thermometer 310, pressure gauge 320 and safety-valve are additionally provided at the top of large water tank 300
330, multiple distributing water tanks 350 are connected on large water tank 300, are connected especially by connecting tube 380 with distributing water tank 350, are connected
Flowmeter 340 is provided on pipe 380；Hose 360 is provided with below each distributing water tank 350, the end of hose 360 is provided with spray
Mouth 370, the outlet of 350 lower end of distributing water tank also are provided with control valve, spinner flowmeter are housed between control valve lower end and nozzle 370.
Gas circuit unit then includes air accumulator 200 and air compressor 210, and air accumulator 200 is connected with air compressor 210, and air accumulator
200 outlet side is connected with large water tank 300, and gas pressure maintaining valve 220 and pressure are provided on the pipeline being connected with large water tank 300
Table 230.Gas circuit unit keeps the water energy of water way unit enough with certain speed for providing certain gas pressure to large water tank 300
Degree injection.
Temperature collecting cell includes thermocouple, data collecting instrument 810 and processing terminal 800 in the present embodiment, and thermocouple is surveyed
Wen Duan is embedded in mobile steel billet 600, and thermocouple is connected by compensating wire with data collecting instrument 810, data collecting instrument
810 are connected with processing terminal 800, and temperature data is transferred to processing terminal 800 and is handled.Specifically, thermocouple can be with
It is buried using pressed disc method, i.e., uniformly processes through-hole (such as φ 2mm), counterbore (such as φ 5mm) on steel billet 600 and cover plate is (such as
φ 5mm), thermocouple outer cover is equipped with glass fibre sleeve and insulation protection porcelain bushing, by thermocouple welding in cover plate bottom,
Cover plate is welded in counterbore again.Thermocouple one end connects data collecting instrument 810 and processing terminal by longer compensating wire
800, it is ensured that steel billet 600 is in moving process and processing terminal 800 (such as computer computer) is stationary.In the present embodiment
The embedding method of thermocouple can guarantee that thermocouple node and measurand are in close contact, not easily to fall off, reduces measurement error, uses
Conducting wire is supplemented, data collecting instrument 810 and processing terminal 800 can be made to monitor 600 heat exchange surface of steel billet in real time under static state
Temperature, reliability is higher, as a result more accurate.Temperature collecting cell is that data acquire the one of integrated processing unit in the present embodiment
Part, data acquire the flow of medium in integrated processing unit acquisition water way unit, pressure, temperature and each typical position of plate (base)
Temperature, transmission speed for setting etc. simultaneously focus on, it can be achieved that function such as overall process, the acquisition of diversiform data, processing, trend demonstrations
Energy.
It further include the heating unit 400 set gradually, come out of the stove unit 410 and gear unit 500 in the present embodiment, heating is single
Member 400 is located at 500 front of gear unit, comes out of the stove unit 410 between heating unit 400 and gear unit 500, nozzle 370
And the setting of cut-out governing unit, right above gear unit 500, water way unit and temperature collecting cell are located at gear unit 500
Side, gear unit 500 is used to that steel billet 600 to be made to move forward with certain speed, and adjustable transmission speed；Steel billet 600
Gear unit 500 is sent to by unit 410 of coming out of the stove after the heated heating of unit 400, gear unit 500 is set under nozzle 370
Side simultaneously drives steel billet 600 constantly mobile.Heating unit 400 uses Elema electric furnace in the present embodiment, and size of burner hearth is
400mm × 300mm × 300mm, voltage rating 380v, rated temperature are 1300 DEG C, are equipped in heating unit 400 for placing
The bracket of steel billet 600, frame bottom are covered with heat-preservation cotton, and steel billet 600 is placed in heat-preservation cotton, so that 600 lower surface of steel billet is exhausted
Warm status, experimental calculation process significantly simplify, and heat-preservation cotton can effectively increase the forced area of steel billet 600, overcome steel billet 600
The problem on deformation of thermal stress at high operating temperatures.Chain plate driving can be used in gear unit 500, and is equipped with driving motor as speed regulation
Device, specifically transmission can be made of carrier bar, chain board mount and driving motor, and carrier bar is mounted on chain board mount, driving motor
It is mounted on the side of chain board mount one end, carrier bar one end is equipped with gear, and driving motor output end one end is equipped with gear, carrier bar and drive
Dynamic motor is engaged by gear completes transmission, and driving motor driving carrier bar is driven with certain speed.Gear unit 500 also can be used
Other a variety of kinds of drive such as roller-way transmission etc. in industry, details are not described herein.Unit 410 of coming out of the stove in the present embodiment includes connection
Steel plate and rotating mechanism, rotating mechanism include that roll shaft case, roll shaft and control motor, roll shaft case are located at 500 front end of gear unit, roller
There are two parallel to each other and roll shafts for the upper end dress of axle box, control the output end of motor equipped with motor gear, one end of two roll shafts
Roll shaft gear is had, motor gear is located between two roll shaft gears and engages with two roll shaft gears, junction steel plate one
End and the welding of heating furnace fire door bottom, the rotating mechanism welding of 500 front end of the junction steel plate other end and gear unit, and connect steel
Plate is formed along the inclined plate gradually decreased far from heating furnace direction height, and angle is 15-30 ° between horizontal plane, convenient for that will heat
Good steel billet 600 is moved to biography by rotating mechanism from taking out in furnace and being sent on rotating mechanism along the slope of junction steel plate again
Moving cell 500, to complete operation of coming out of the stove, the front-end and back-end of gear unit 500 are provided with rotating mechanism, and front end can be effective
It buffers the steel billet 600 slided from slope and causes impact failure, rear end is used to steel billet 600 being transmitted to home.
Matrix form arrangement cut-out governing unit includes overarm brace 730, crossbeam 720 and cut-out governing frame in the present embodiment
710, overarm brace 730, i.e. two side positions at 500 both ends of gear unit are respectively arranged with along the both ends of 600 moving direction of steel billet
It is respectively equipped with overarm brace 730, crossbeam 720 is connected separately between the overarm brace 730 at both ends, crossbeam 720 can be along crossbeam
The short transverse of bracket 730 moves up and down, and is arranged at intervals with multiple cut-out governing framves 710, nozzle on crossbeam 720 along its length
Adjusting bracket 710 can be moved along the length and short transverse of crossbeam 720, and nozzle 370 is set on cut-out governing frame 710.Specifically
Ground, cut-out governing frame 710 include upper frame and the side frame extended downwardly positioned at upper frame both ends, and side frame is connected with crossbeam 720, nozzle
370 are set on upper frame.Multiple cut-out governing framves 710, each nozzle are set along its length on the present embodiment middle cross beam 720
Multiple nozzles 370 are then set on the upper frame of adjusting bracket 710, i.e., 600 moving direction of steel billet are provided with multiple rows of nozzle 370, it is multiple rows of
A fixed spacing is kept between nozzle 370, a fixed spacing is also kept between multiple nozzles 370 of every row, i.e. 300 bottom of large water tank connects
Multiple distributing water tanks 350 are connected with, the two sides of each distributing water tank 350 are respectively provided with many flexible pipes 360 and connect nozzle 370, same
Multiple nozzles 370 of 350 the same side of distributing water tank, which respectively correspond, to be arranged on the same cut-out governing frame 710.
The height of the matrix form arrangement adjustable nozzle 370 of cut-out governing unit, spray angle, adjacent spray in the present embodiment
The array pitch of the spacing of mouth 370 and every row's nozzle 370 is spaced apart on overarm brace 730 along short transverse and is equipped with multiple fixation holes, horizontal
Beam 720 is connect by screw threads for fastening with overarm brace 730, is spaced apart along its length on crossbeam 720 and is equipped with multiple fixation holes, spray
It is spaced apart on the side frame of mouth adjusting bracket 710 along short transverse and is equipped with multiple fixation holes, threaded hole, nozzle tune can be used in fixation hole
Section frame 710 is connect by screw threads for fastening with crossbeam 720, is spaced apart on the upper frame of cut-out governing frame 710 equipped with multiple for placing
The putting hole of nozzle 370, circumferentially offers a circle fixed groove on the outer wall of nozzle 370, circumferentially then right on the inside of putting hole
It should be provided with fixing sleeve (such as rubber pad), when nozzle 370 is put into putting hole, then the fixing sleeve in putting hole just cooperates insertion
In the fixed groove of 370 outer wall of nozzle, effective stationary positioned to nozzle 370 can be ensured, prevent nozzle 370 from shaking offset shadow
Experimental result is rung, and placement location of all nozzles 370 in putting hole can be made to keep unified.The present embodiment middle cross beam bracket
Fixation hole on 730 is capable of the height of flexible modulation crossbeam 720, by the fixation hole on overarm brace 730 and consolidating on crossbeam 720
Determine hole to be aligned and fastened with nut bolt, the fixation hole on crossbeam 720 is for changing between the different row's nozzles 370 of adjustment
Array pitch (the as direction x), can be arranged cut-out governing frame 710 by interval different number fixation hole, and cut-out governing frame 710 pushes up
Putting hole on frame is used to adjust the spacing (the as direction y) between same row's nozzle 370 between adjacent nozzle 370, nozzle tune
Fixation hole on section 710 side frame of frame can then be matched with crossbeam 720, for adjusting the height and jet angle of same row's nozzle 370
Degree loosens crossbeam 720 of the fastening nut by cut-out governing frame 710 around two sides and rotates by a certain angle, then when adjusting spray angle
By the different fixation hole fastening of correspondence, it can be realized 180 ° of comprehensive adjustings.It is not only simple in structure in this way, it can
With the various positions state of flexible modulation nozzle 370, it can also be conveniently replaceable nozzle 370, realize the transformation of the different types of cooling:
Air cooling, water are cooling and water mist is cooling etc..In the present embodiment on 710 side frame of cut-out governing frame between two neighboring fixation hole away from
From for 50mm, the distance between two neighboring putting hole is 30mm on upper frame, on crossbeam 720 between two neighboring fixation hole away from
From for 40mm, the distance between two neighboring fixation hole is 100mm on overarm brace 730.
The present embodiment designs adjustable numerous parametric variables by simple structure: injector spacing is in plane x, y direction
It is any adjust, the step of height of jet (direction z) is adjusted and the fan-like pattern of flow angle is adjusted, while control system can be real
The automatic adjustment of existing nozzle group pressure, flow and independent pressure, flow, data acquisition integrated processing system can also be achieved entirely
Functions, these variables such as process, the acquisition of diversiform data, processing, trend demonstration are related to all ginsengs of steel billet heat transfer research
Number variable, while numerical value inverse measured by internal embedding thermocouple to obtain the continuous temperature of steel billet heating surface, hot-fluid close
Degree and the coefficient of heat transfer, i.e. the periodic heat transfer boundary of steel billet heat exchange surface.
Embodiment 2
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, uses above-mentioned reality
The experimental provision for applying example, follows the steps below:
A, steel billet 600 is put into heating unit 400 to be evenly heated, and be passed through protective atmosphere to prevent its oxidation；Heating
It is preceding that threaded hole is opened up on steel billet 600, and two iron chains are fixedly connected on to by screw threads for fastening the side of steel billet 600, then
Steel billet 600 is placed on the bracket for being equipped with heat-preservation cotton, bracket is put into heating furnace and is heated, two iron chains stretch out fire door
Outside；Heating temperature is set as 900 DEG C to start to be evenly heated；
B, between being arranged between the height of jet of nozzle 370, flow angle and nozzle 370 by cut-out governing unit
Away from passing through the effluxvelocity that gas circuit unit and water way unit adjust nozzle 370；Height of jet is 700mm, jet stream in the present embodiment
Angle is 0, and spacing is 30mm, spacing between rows and rows 40mm, effluxvelocity 6m/s between every row's nozzle 370 is adjacent；
C, at the end of steel billet 600 heats, opening gas circuit unit and water way unit penetrates nozzle 370 by the speed of setting
Stream impact, adjusting gear unit 500 is driven it by the speed of setting；Transmission speed is 0.5m/s；
D, after steel billet 600 heats, steel billet 600 is moved to gear unit 500 by coming out of the stove unit 410, transmission is single
Member 500 drives steel billet 600 to be driven with setting speed, and nozzle 370 carries out jet impulse cooling, temperature collecting cell in transmission process
Carry out the acquisition of 600 real time temperature of steel billet；Specifically, Compaction of Heating Furnace Door is opened, two iron that 600 side of steel billet is fixed are passed through
Chain pulls out steel billet 600 out of furnace, and the whirler of 500 front end of gear unit is drawn then along inclined junction steel plate
It on structure, is moved on gear unit 500 by rotating mechanism, completes operation of coming out of the stove；
E, when steel billet 600 is transmitted to 500 end of gear unit, primary experiment is completed, and records experimental data；
F, change spacing (every row's phase between height of jet, flow angle, effluxvelocity and the nozzle 370 of nozzle 370
Spacing and array pitch between neighbour), it carries out repeating experiment, each factor for obtaining influencing impact boiling heat transfer conducts heat to billet surface
The rule on boundary, processing analysis data obtain 600 surface heat transfer boundary condition of steel billet in the complicated heat exchange strengthened in cooling procedure
Rule.
Embodiment 3
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that in the present embodiment the height of jet of nozzle 370 can be adjusted to 800mm, 900mm, 1000mm,
1100mm、1200mm。
Embodiment 4
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that adjustable interval in the present embodiment between every two neighboring nozzle 370 of row be 60mm, 90mm,
120mm。
Embodiment 5
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that the array pitch in the present embodiment between multiple rows of nozzle 370 can be adjusted to 40mm, 80mm, 120mm.
Embodiment 6
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that the transmission speed of gear unit 500 can be adjusted to 0~1m/s in the present embodiment.
Embodiment 7
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that the feed pressure of gas circuit unit can be adjusted to 0~0.8Mpa in the present embodiment.
Embodiment 8
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that it is 0~90 ° that cut-out governing bracket, which adjusts angular range, in the present embodiment.
Embodiment 9
The research matrix arrangement nozzle of the present embodiment is quickly cooled down the experimental method of high temperature plate (base) heat transfer, substantially with above-mentioned
Embodiment, the difference is that 120 flow of flow control valve can be adjusted to 0~15L/min in the present embodiment.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. studying the experimental method that matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer, it is characterised in that: use research square
Battle array arrangement nozzle is quickly cooled down the experimental provision of high temperature plate (base) heat transfer, follows the steps below:
A, steel billet (600) is put into heating unit (400) to be evenly heated, and be passed through protective atmosphere to prevent its oxidation；
B, pass through height of jet, flow angle and the nozzle (370) of matrix form arrangement cut-out governing unit setting nozzle (370)
Between spacing, pass through the effluxvelocity that gas circuit unit and water way unit adjust nozzle (370)；
C, at the end of steel billet (600) heating, opening gas circuit unit and water way unit penetrates nozzle (370) by the speed of setting
Stream impact, adjusting gear unit (500) is driven it by the speed of setting；
D, after steel billet (600) heating, steel billet (600) is moved to gear unit (500) by unit of coming out of the stove (410), is passed
Moving cell (500) drives steel billet (600) to be driven with setting speed, and nozzle (370) carries out jet impulse cooling, temperature in transmission process
Spend the acquisition that acquisition unit carries out steel billet (600) real time temperature；
E, when steel billet (600) is transmitted to gear unit (500) end, primary experiment is completed, and records experimental data；
F, change the spacing between height of jet, flow angle, effluxvelocity and the nozzle (370) of nozzle (370), carry out weight
Multiple experiment, obtains rule of each factor to billet surface heat transfer boundary for influencing impact boiling heat transfer, and processing analysis data obtain
Steel billet (600) surface heat transfer boundary condition is in the complicated heat exchange rule strengthened in cooling procedure out.
2. research matrix arrangement nozzle according to claim 1 is quickly cooled down the experimental method of high temperature plate (base) heat transfer,
It is characterized in that: the experimental provision of research matrix arrangement nozzle rapid cooling high temperature plate (base) heat transfer, including gas circuit unit,
Water way unit, nozzle (370), matrix form arrangement cut-out governing unit and temperature collecting cell, water way unit and nozzle (370) phase
Connect and be used to provide to nozzle (370) injection water, gas circuit unit is connected with water way unit and is used to provide gas to water way unit
Pressure, so as to adjust the jet velocity of nozzle (370), nozzle (370) is set on matrix form arrangement cut-out governing unit, matrix
Formula arrangement cut-out governing unit is used to adjust the height of jet, flow angle and nozzle (370) of nozzle (370) respectively in x, the side y
Spacing between, temperature collecting cell is for collection plate (base) (600) temperature information and handles.
3. research matrix arrangement nozzle according to claim 2 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
Be characterized in that: water way unit includes the water tank (100) and large water tank (300) being connected by pipeline, and large water tank connects on (300)
Have multiple distributing water tanks (350), is provided with hose (360) below each distributing water tank (350), the end setting of hose (360)
There are nozzle (370).
4. research matrix arrangement nozzle according to claim 3 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
It is characterized in that: being provided with water pump (110), Water flow control valve on the connecting line between water tank (100) and large water tank (300)
(120) and flowmeter (130), large water tank (300) top are additionally provided with thermometer (310), pressure gauge (320) and safety-valve
(330), large water tank (300) is connected by connecting tube (380) with distributing water tank (350), and connecting tube is provided with flowmeter on (380)
(340)。
5. research matrix arrangement nozzle according to claim 3 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
Be characterized in that: gas circuit unit includes air accumulator (200) and air compressor (210), the outlet side of air accumulator (200) and large water tank
(300) it is connected, and is provided with gas pressure maintaining valve (220) and pressure gauge (230) on connected pipeline.
6. research matrix arrangement nozzle according to claim 2 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
Be characterized in that: temperature collecting cell includes that thermocouple, data collecting instrument (810) and processing terminal (800), thermocouple temperature measurement end are buried
It sets in mobile steel billet (600), and thermocouple is connected by compensating wire with data collecting instrument (810), data collecting instrument
(810) it is connected with processing terminal (800), and temperature data is transferred to processing terminal (800) and is handled.
7. research matrix arrangement nozzle according to claim 2 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
Be characterized in that: matrix form arrangement cut-out governing unit includes overarm brace (730), crossbeam (720) and cut-out governing frame (710),
Both ends along steel billet (600) moving direction are respectively arranged with overarm brace (730), are connected between the overarm brace (730) at both ends
Have crossbeam (720), crossbeam (720) can be moved up and down along the short transverse of overarm brace (730), along length on crossbeam (720)
Direction is arranged at intervals with multiple cut-out governing framves (710), and cut-out governing frame (710) can be along the length and height of crossbeam (720)
Direction is mobile, and nozzle (370) is set on cut-out governing frame (710).
8. research matrix arrangement nozzle according to claim 7 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
Be characterized in that: cut-out governing frame (710) includes upper frame and the side frame that extends downwardly positioned at upper frame both ends, side frame and crossbeam (720)
It is connected, nozzle (370) is then set on upper frame.
9. research matrix arrangement nozzle according to claim 8 is quickly cooled down the experimental provision of high temperature plate (base) heat transfer,
It is characterized in that: being spaced apart on overarm brace (730) along short transverse and be equipped with multiple fixation holes, crossbeam (720) passes through screw threads for fastening
It is connect with overarm brace (730), is spaced apart along its length on crossbeam (720) and is equipped with multiple fixation holes, cut-out governing frame (710)
Side frame on be spaced apart along short transverse and be equipped with multiple fixation holes, cut-out governing frame (710) passes through screw threads for fastening and crossbeam (720)
It connects, is spaced apart on the upper frame of cut-out governing frame (710) equipped with multiple for placing the putting holes of nozzle (370).
10. being quickly cooled down the reality of high temperature plate (base) heat transfer according to the described in any item research matrix arrangement nozzles of claim 2-9
Experiment device, it is characterised in that: it further include the heating unit (400) set gradually, unit of coming out of the stove (410) and gear unit (500),
Gear unit (500), gear unit are sent to by unit of coming out of the stove (410) after steel billet (600) heated unit (400) heating
(500) it is set to below nozzle (370) and drives steel billet (600) constantly mobile.
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| CN201811547181.4A CN109374676A (en) | 2018-12-14 | 2018-12-14 | Study the experimental method that matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547181.4A CN109374676A (en) | 2018-12-14 | 2018-12-14 | Study the experimental method that matrix arrangement nozzle is quickly cooled down high temperature plate (base) heat transfer |
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| CN109374676A true CN109374676A (en) | 2019-02-22 |
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Cited By (1)
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