CN108908673A - High and cold low pressure area Precast T-Beam steam press maintenance method - Google Patents
High and cold low pressure area Precast T-Beam steam press maintenance method Download PDFInfo
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- CN108908673A CN108908673A CN201811063290.9A CN201811063290A CN108908673A CN 108908673 A CN108908673 A CN 108908673A CN 201811063290 A CN201811063290 A CN 201811063290A CN 108908673 A CN108908673 A CN 108908673A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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Abstract
The invention discloses a kind of high and cold low pressure area Precast T-Beam steam press maintenance methods, and T beam is placed in maintenance canopy, is carried out to it：It is quiet to stop：10 DEG C~20 DEG C of temperature are kept in maintenance canopy, 2~6h of soaking time；Heating：Temperature in maintenance canopy is increased to 40 DEG C~50 DEG C, heat preservation is until concrete strength reaches specified cooling demoulding strength；Cooling：Reduction conserves the temperature in canopy to canopy internal-external temperature difference≤20 DEG C.The application not only solve because difference variation is big and concrete in the table temperature difference greatly caused by concrete surface, deep layer problem of Cracking, while duration and cost is greatly saved.
Description
Technical field
The present invention relates to boilers, and in particular to high and cold low pressure area Precast T-Beam steam press maintenance method.
Background technique
High and cold low pressure area belongs to temperate zone and cool temperature zone monsoon climate mostly, and annual range of temperature is small and temperature difference per day is big, newly pours mixed
The heat of hydration is generated after solidifying soil initial set, internal temperature is up to 46 DEG C, if external temperature cannot ensure at this time, concrete can be made to generate
Temperature difference crack.The presence in crack will affect the durability and mechanical property of concrete.Therefore it is located in High aititude, extremely frigid zones coagulation
Native internal and extraneous temperature difference control is particularly critical.Since, as the time increases, temperature is stepped up, high and coldly after concreting
The external temperature in area is too low（Especially winter）.Concrete surface can generate a large amount of temperature difference cracks, shadow after temperature difference between inside and outside concrete is excessive
Ring the durability and mechanical property of concrete.It is single that excessive temperature differentials can not be solved the problems, such as in terms of raw material, match ratio, so necessary
Change external temperature, guarantees temperature difference between inside and outside concrete relative equilibrium, to solve the problems, such as concrete surface temperature difference crack.
Tradition spray maintenance solves only contraction fissure caused by surface hydration heat during concrete initial set, high and cold low
Water temperature is lower increases young concrete internal-external temperature difference in pressure area, has promoted the expansion of temperature difference crack.Coal, gas, oil, bavin boiler
Burning velocity is slow, can not adjust the temperature difference as early as possible, resource is limited to be regenerated, and environmental pollution is larger after burning, in operational process
Investment personnel are more, and operating cost is high, and curing cycle, long work efficiency was low.The shortcomings that overcome traditional handicraft, a kind of new high and cold low pressure
Regional Precast T-Beam steam press maintenance method is of crucial importance.
Summary of the invention
The purpose of the present invention is to provide a kind of high and cold low pressure area Precast T-Beam steam press maintenance methods, solve traditional handicraft
It sprays water directly on T beam, increase young concrete internal-external temperature difference since high and cold low pressure area water temperature is lower, promoted the temperature difference
The problem of expansion in crack.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of high and cold low pressure area Precast T-Beam steam press maintenance method, which is characterized in that by T beam be placed in maintenance canopy in, to its into
Row：
It is quiet to stop：10 DEG C~20 DEG C of temperature are kept in maintenance canopy, 2~6h of soaking time；
Heating：Temperature in maintenance canopy is increased to 40 DEG C~50 DEG C, heat preservation is until concrete strength reaches specified cooling demoulding
Intensity；
Cooling：Reduction conserves the temperature in canopy to canopy internal-external temperature difference≤20 DEG C.
Preferably, in the heating step, raised speed≤15 DEG C of temperature/h.
Preferably, in the cooling step, first with the speed cooling 3-5h of 4-6 DEG C/h, then with 9-11 DEG C/h's
Speed is cooled to maintenance roc internal-external temperature difference≤20 DEG C.
Preferably, the specified cooling demoulding strength is the 75%-85% of concrete design strength.
Preferably, including boiler and the roof insulating being connected to the steam outlet pipe of boiler, wherein
The boiler includes burner hearth and the flue gas header that is connected with the hearth；
It is provided with fuel inlet and ashes outlet on the burner hearth, is provided with horizontal water tube, the arrival end of the horizontal water tube in burner hearth
It is connected with water tank；
It is provided with exhanst gas outlet in the flue gas header, is provided with steam manifold in flue gas header, the steam manifold and horizontal water tube
Outlet, and steam outlet pipe is provided on the steam manifold, the outlet of the steam outlet pipe is pierced by flue gas header and is and flue gas header
Outside；
The roof insulating includes support frame, covering on the support frame as the heat and moisture preserving cloth of ceiling and canopy side wall and at least one
The outlet of door on canopy side wall, the steam outlet pipe is located in roof insulating.
High and cold low pressure area Precast T-Beam steam press maintenance method in the application can be vertical shell type boiler.Coal, gas,
Oil, bavin boiler combustion speed are slow, can not adjust the temperature difference as early as possible, and resource is limited to be regenerated, and environmental pollution is larger after burning, fortune
Investment personnel are more during row, and operating cost is high, and curing cycle, long work efficiency was low, and it is advantageous to use biomass fuel.Fuel by
Fire door is dropped in the burning of burner hearth inner lamination, and horizontal water tube is disposed in burner hearth, and high-temperature flue gas carries out transversal flow to horizontal water tube and goes forward side by side
Steam manifold is arranged subsequently into flue gas header in the abundant heat convection of row in flue gas header, sweep of gases steam manifold reduces cigarette
Temperature degree, improves vapor (steam) temperature, and flue gas is finally discharged into atmosphere.Boiler load is adaptable, in 60-100% rated load range
It inside can operate normally safely, vapor (steam) temperature can reach 170 DEG C or more.
Precast concrete or T-type beam are placed in roof insulating, the presence of support frame can be convenient solidifying native prefabricated component or T-type
Liang Congmen disengaging, heat and moisture preserving cloth can slow down the speed that concrete or T-type beam surface temperature or humidity are scattered and disappeared, and reduce inside and outside temperature
Degree and psychrometric difference, solve the problems, such as concrete surface temperature difference crack to a certain extent.Although maintenance cloth can slow down concrete table
The temperature in face, wetness loss, but be still difficult to it is consistent with internal humidity temperature, so setting steam pipe, defeated by steam
It send to canopy, increases the temperature and humidity of concrete surface, divide concrete surface and internal temperature, humidity uniformly as far as possible
Cloth.
Preferably, the material in the roof insulating is internally provided with the first device for monitoring temperature, setting in roof insulating
There is second temperature monitoring device, is provided with third device for monitoring temperature and flow regulator on the steam outlet pipe, described first
Device for monitoring temperature, second temperature monitoring device, third device for monitoring temperature and flow regulator are connected with single-chip microcontroller.
First device for monitoring temperature therein, second temperature monitoring device, third device for monitoring temperature can be three temperature
Degree meter, three thermometers are connect with single-chip microcontroller, the temperature that single-chip microcontroller passes through temperature and inside concrete in measurement roof insulating
Degree calculates the temperature difference inside and outside concrete, adjusts the flow of steam, according to the temperature of steam then to realize the temperature in roof insulating
The temperature spent inside and outside relatively stable and concrete is consistent.
Support frame in the application can be arbitrary structures, as long as heat and moisture preserving cloth can be supported and can be by concrete
Prefabricated component is located at below heat and moisture preserving cloth, can slow down temperature, humidity is scattered and disappeared.Wherein, support frame lower end can also be with
Wheel is set, the movement of roof insulating is facilitated, in use, being conserved at where roof insulating can be pushed into T-type beam to it.
Preferably, being provided with branching block below the horizontal water tube, the branching block is fixed by the connecting rod in furnace
In thorax；
Exhaust gases passes are formed between the branching block and inboard wall of burner hearth.
Branching block plays the role of dust-break shunting, and when fuel combustion can generate a large amount of cigarette ashes, and branching block blocks part cigarette
Ash, with cigarette ash left from exhaust gases passes.
Preferably, the lower surface of the branching block gradually tilts upwards from middle part to surrounding, reduce what flue gas rose
Resistance.
Preferably, the upper surface of the branching block tilts gradually downward from middle part to surrounding, prevent to a certain extent
Only cigarette ash is gathered in the upper surface of branching block.
Preferably, the dust board that can be stirred downwards is provided with above the exhaust gases passes, the dust board one
Side is mounted on furnace wall by shaft, and one side far from furnace wall is fixed on the spring supporting on branching block or connecting rod by lower section.
The setting height of dust board is lower than the height of horizontal water tube, and the top of exhaust gases passes is arranged in, can further function as
The effect of dust-break.In addition, the one side of dust board far from furnace wall can be inclined slightly upwards, when excessive, bullet of coming to cigarette ash on dust board
The pressure increase that spring is born, the one side of dust board far from furnace wall will think about it inclination, and ashes slide, and dust-break sheet reset constantly follows
Ring.
Preferably, the dust board there are two pieces or more, circumferentially it is mounted on furnace wall.
Two pieces or more of dust board forms a ring, and the middle part for the circle that flue gas is surrounded from dust board is upward, can more concentrate
Wash away horizontal water tube, improve the efficiency of heat exchange.
Preferably, being provided with vibration chamber in the dust board, the vibration is intracavitary to be provided with strike ball.
When dust board is in original position, ball is hit close to furnace wall, with the increase of cigarette ash on dust board, the inside of dust board
Gradually downward, when inside height is lower than close to the height in the outside of furnace wall, strike club is slid to the side far from furnace wall, is led to
The device between strike ball and the inside for shaking chamber is crossed, slides the flue dust on dust board, then dust-break sheet reset, hits vibration
Chamber is close to the side of furnace wall, and due to being rigidly connected between dust board and furnace wall, furnace wall can also be shaked with it, and will be attached on furnace wall
Cigarette ash shake off, kill two birds with one stone.
Preferably, the door includes doorframe and door curtain, the roller bearing driven by drawstring is provided on the doorframe, it is described
The upper edge roller bearing of door curtain is axially fixed on roller bearing；
Sleeve is provided on the doorframe, the roller bearing is mounted in sleeve by bearing, is provided with and is used for below the sleeve
The notch of door curtain disengaging.
Door curtain top is fixed on roller bearing, drawstring drive roller bearing rotation during door curtain can be wrapped in shaft or from turn
It is discharged on axis, to realize the unlatching and closure of door.Roller bearing is arranged in sleeve, on the one hand prevents roller bearing from being collided with, another
Aspect construction site dust may be bigger, if dust over time is accumulated between roller bearing and drawstring without sleeve, may go out
Caton phenomenon between existing drawstring and roller bearing.
Preferably, the door curtain bottom end is provided with lower faller along door curtain edge；
Sliding slot is provided on the both sides that the doorframe is vertically arranged, being provided on the door curtain or faller can slide in sliding slot
Sliding block, the width of rebate of the sliding slot is less than the diameter of sliding block.
Or there is wind in construction site, if then door curtain lower end does not have weight that may hike up, cause humidity in canopy, temperature dissipate
It loses.Sliding block can slide in sliding slot, reduce the gap between door curtain and doorframe, reduce the lost speed of temperature of shed, humidity.
Preferably, be provided with guide part at the sliding slot top inlet, the width of the guide part from top to bottom according to
Secondary reduction.
Guide part is arranged in sliding slot top, and when sliding block enters sliding slot, guide part can play a guide shoe alignment and slide
The phenomenon that sliding block caused by the effect of slot, anti-limited slip block and sliding slot are not aligned with is stuck at chute inlet.
The core technology and principle of the engineering method are green bio low-voltage high-temperature steam press maintenance systems, mainly by " biology fires
Burner+low-voltage high-temperature boiler " steam generator, steam pressure pipe-line system, roof insulating and intelligent temperature measurement system are constituted.Specific operation
Step is：After the completion of precast beam pours, boiler, biomass combustion machine are connected, Bunker fills it up with fuel, by combustor crater
It is directed at boiler combustion storehouse, jet chimney has been laid in time, and closed tarpaulin covering is carried out to beam body, has checked water level in the boiler
Line after preparation, starts combustor ignition switch, and observation water temperature rises situation, and water temperature reaches 90 DEG C of i.e. openable confessions
Steam valve carries out measuring young concrete internal temperature and peripheral environment temperature for steam, if internal-external temperature difference is greater than 20 DEG C,
In time for steam, it is ensured that internal-external temperature difference balance reduces burn rate, mistake such as the excessively high timely adjusting combustor burning gear of temperature
Monitoring temperature at any time in journey, such as too high or too low timely adjustment.
Compared with prior art, beneficial effects of the present invention are at least one of following：
Economic benefit：
It saves the duration, fragrant beautiful No. 2 beam prefabricated fields T of the second work area of high speed project management department need Precast T-Beam 610, lay precast pedestal 25
It is a, it was recycled according to traditional curing 14 days one, monthly Precast T-Beam 50, needs complete altogether within 366 days.It is supported using biomass fuel steam
Shield can shorten to 7 days one recycle, and each pedestal is saved the duration 7 days, and total construction period saves 183 days；
Save the cost, by one calculating of traditional coal burning boiler（1 ton）, coal 40KG is consumed per hour, and 24 hours consumption coal 960KG work as land price
1300 yuan/ton of lattice, 1248 yuan of fuel cost are needed daily, 2 people of enamelware pot furnaceman, 150 yuan/work day, coal burning boiler conserves total expense：1248
+ 2 × 150 yuan=1548 yuan of member.And adopt new technology and consume biomass fuel 20KG, 24 hours consumption coal 480KG per hour, work as land price
1250 yuan/ton of lattice, 600 yuan of fuel cost are needed daily, 1 people of enamelware pot furnaceman, 150 yuan/work day, biomass boiler conserves total expense：
600 yuan+150 yuan=750 yuan.The two compares daily save the cost 1548-750=798（Member）, according to always need the duration 183 days calculate,
Total amount of money of saving is 798 × 183=146034 yuan；
Social benefit, this engineer application biomass fuel boiler steam curing construction, in reasonably optimizing manpower and goods and materials etc.
While cost input, the construction period has been saved to the maximum extent.High aititude, extremely frigid zones are solved because precast concrete conserves
It is not in place, concrete temperature difference crack is caused not in time, since traditional curing temperature control is adjusted slowly, it is not easy to it controlling, environmental pollution is big,
Generate the problems such as operation cost is high.My company is by popularization to the engineering method and with being built and supervisor is unanimously approved
And favorable comment, social benefit are good.
Using biomass fuel boiler, facilitates control burning speed slow, adjust the temperature difference as early as possible, and fuel source is renewable, fire
Environmental pollution is smaller after burning, and operating cost is low.Height is used in by Comprehensive Correlation discovery biomass fuel low-voltage high-temperature boiler
Height above sea level, extremely frigid zones Precast T-Beam concrete curing, it not only solve because difference variation is big and concrete in the table temperature difference cause greatly
Concrete surface, deep layer problem of Cracking, while duration and cost is greatly saved.
The efficiency for cooperating on the one hand raising heat exchange of branching block, dust board, on the other hand reduction is arranged to a certain extent
The content of solid particle in flue gas out, and reduce accumulation of the cigarette ash on horizontally-arranged pipe or furnace wall.
Be arranged steam pipe, steam is delivered in canopy, the temperature and humidity of concrete surface is increased, make concrete surface and
Temperature, the humidity of inside are evenly distributed as much as possible.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of boiler in the present invention.
Fig. 3 is the structural schematic diagram of roof insulating of the present invention.
Fig. 4 is the connection schematic diagram of roller bearing of the present invention and drawstring.
Fig. 5 is the schematic diagram of door curtain of the present invention.
Fig. 6 is the schematic diagram of present invention slider and sliding slot.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1：
A kind of high and cold low pressure area Precast T-Beam steam press maintenance method is present embodiments provided, T beam is placed in maintenance canopy, to it
It carries out：
It is quiet to stop：10 DEG C of temperature are kept in maintenance canopy, 2~6h of soaking time；
Heating：Temperature in maintenance canopy is increased to 50 DEG C with the speed of 15 DEG C/h, heat preservation is until concrete strength is reached for coagulation
The 75% of native design strength；
Cooling：First with the speed cooling 5h of 4 DEG C/h, maintenance roc internal-external temperature difference≤20 DEG C are then cooled to the speed of 11 DEG C/h.
Embodiment 2：
A kind of high and cold low pressure area Precast T-Beam steam press maintenance method is present embodiments provided, T beam is placed in maintenance canopy, to it
It carries out：
It is quiet to stop：20 DEG C of temperature are kept in maintenance canopy, soaking time 2h；
Heating：Temperature in maintenance canopy is increased to 40 DEG C with the speed of 10 DEG C/h, heat preservation is until concrete strength is reached for coagulation
The 85% of native design strength；
Cooling：First with the speed cooling 3h of 6 DEG C/h, maintenance roc internal-external temperature difference≤20 DEG C are then cooled to the speed of 9 DEG C/h.
Embodiment 3：
A kind of high and cold low pressure area Precast T-Beam steam press maintenance method is present embodiments provided, T beam is placed in maintenance canopy, to it
It carries out：
It is quiet to stop：15 DEG C of temperature are kept in maintenance canopy, soaking time 4h；
Heating：Temperature in maintenance canopy is increased to 45 DEG C with the speed of 13 DEG C/h, heat preservation is until concrete strength is reached for coagulation
The 80% of native design strength；
Cooling：First with the speed cooling 4h of 5 DEG C/h, maintenance roc internal-external temperature difference≤20 DEG C are then cooled to the speed of 10 DEG C/h.
Embodiment 4：
The present embodiment further defines on the basis of embodiment 1-3：As shown in Figure 1, include boiler 1 and with boiler 1 go out
The roof insulating 2 that steam pipe 11 is connected to, wherein
The boiler 1 includes burner hearth and the flue gas header being connected with the hearth；
It is provided with fuel inlet 10 and ashes outlet 12 on the burner hearth, is provided with horizontal water tube 13, the horizontal water tube 13 in burner hearth
Arrival end be connected with water tank；
It is provided with exhanst gas outlet 14 in the flue gas header, steam manifold 15, the steam manifold 15 and cross are provided in flue gas header
The outlet of water pipe 13, and steam outlet pipe 11 is provided on the steam manifold 15, the outlet of the steam outlet pipe 11 is pierced by flue gas collection
Case be with outside flue gas header；
The roof insulating 2 includes the heat and moisture preserving cloth 21 and at least of support frame, covering on the support frame as ceiling and canopy side wall
One door being located on canopy side wall, the outlet of the steam outlet pipe 11 is located in roof insulating 2.
High and cold low pressure area Precast T-Beam steam press maintenance method in the application can be vertical shell type boiler 1.Coal, gas,
Oil, 1 burning velocity of bavin boiler are slow, can not adjust the temperature difference as early as possible, and resource is limited to be regenerated, and environmental pollution is larger after burning,
Investment personnel are more in operational process, and operating cost is high, and curing cycle, long work efficiency was low, and it is advantageous to use biomass fuel.Fuel
The burning of burner hearth inner lamination is dropped in by fire door, is disposed with horizontal water tube 13 in burner hearth, high-temperature flue gas carries out lateral punching to horizontal water tube 13
Abundant heat convection is brushed and carried out, subsequently into flue gas header, steam manifold 15, sweep of gases steam manifold are set in flue gas header
15, flue-gas temperature is reduced, vapor (steam) temperature is improved, flue gas is finally discharged into atmosphere.1 load performance of boiler is strong, in 60-100%
It can be operated normally safely within the scope of rated load, vapor (steam) temperature can reach 170 DEG C or more.
Precast concrete or T-type beam are placed in roof insulating 2, the presence of support frame can be convenient solidifying native prefabricated component or T
Type beam is passed in and out from door, and heat and moisture preserving cloth 21 can slow down the lost speed of concrete or T-type beam surface temperature or humidity, in reduction
Outer temperature and humidity is poor, solves the problems, such as concrete surface temperature difference crack to a certain extent.Although maintenance cloth can slow down coagulation
The temperature on native surface, wetness loss, but be still difficult to it is consistent with internal humidity temperature, so setting steam pipe, will steam
Vapour is delivered in canopy, increases the temperature and humidity of concrete surface, keeps concrete surface and internal temperature, humidity uniform as far as possible
Distribution.
Embodiment 5：
The present embodiment on the basis of embodiment 1, further defines：Material in the roof insulating 2 is internally provided with first
Device for monitoring temperature is provided with second temperature monitoring device in roof insulating 2, is provided with third monitoring temperature on the steam outlet pipe 11
Device and flow regulator, first device for monitoring temperature, second temperature monitoring device, third device for monitoring temperature and stream
Quantity regulating device is connected with single-chip microcontroller.
First device for monitoring temperature therein, second temperature monitoring device, third device for monitoring temperature can be three temperature
Degree meter, three thermometers are connect with single-chip microcontroller, the temperature that single-chip microcontroller passes through temperature and inside concrete in measurement roof insulating 2
Degree calculates the temperature difference inside and outside concrete, adjusts the flow of steam, according to the temperature of steam then to realize in roof insulating 2
Temperature is relatively stable and concrete inside and outside temperature it is consistent.
Support frame in the application can be arbitrary structures, as long as heat and moisture preserving cloth 21 can be supported and can be by coagulation
Native prefabricated component is located at the lower section of heat and moisture preserving cloth 21, can slow down temperature, humidity is scattered and disappeared.Wherein, support frame lower end
Wheel can be set, facilitate the movement of roof insulating 2, in use, being supported at where roof insulating 2 can be pushed into T-type beam to it
Shield.
Embodiment 6：
The present embodiment on the basis of embodiment 1, further defines：The lower section of the horizontal water tube 13 is provided with branching block 16,
The branching block 16 is fixed by the connecting rod in burner hearth；
Exhaust gases passes are formed between the branching block 16 and inboard wall of burner hearth.
Branching block 16 plays the role of dust-break shunting, and when fuel combustion can generate a large amount of cigarette ashes, and branching block 16 blocks portion
Point cigarette ash, with cigarette ash left from exhaust gases passes.
Embodiment 7：
The present embodiment further defines on the basis of embodiment 6：The lower surface of the branching block 16 from middle part to surrounding by
Gradually inclination upwards reduces the resistance that flue gas rises.
Embodiment 8：
The present embodiment further defines on the basis of embodiment 6：The upper surface of the branching block 16 from middle part to surrounding by
It gradually tilts down, prevents cigarette ash from gathering in the upper surface of branching block 16 to a certain extent.
Embodiment 9：
The present embodiment further defines on the basis of embodiment 6：Being provided with above the exhaust gases passes to turn over downwards
Dynamic dust board 17, the dust board 17 are mounted on furnace wall by shaft on one side, and one side far from furnace wall is fixed on by lower section
Spring 18 on branching block 16 or connecting rod supports.
The setting height of dust board 17 is lower than the height of horizontal water tube 13, and the top of exhaust gases passes is arranged in, can be further
Play the role of dust-break.In addition, the one side of dust board 17 far from furnace wall can be inclined slightly upwards, when coming to cigarette ash on dust board 17
Excessively, the pressure increase that spring 18 is born, the one side of dust board 17 far from furnace wall will think about it inclination, and ashes slide, dust board
17 reset, and constantly recycle.
Embodiment 10：
The present embodiment further defines on the basis of embodiment 9：The dust board 17 has two pieces or more, circumferentially installs
On furnace wall.
Two pieces or more of dust board 17 forms a ring, and the middle part of flue gas from the circle that dust board 17 surrounds is upward, Neng Gougeng
That concentrates washes away horizontal water tube 13, improves the efficiency of heat exchange.
Embodiment 11：
The present embodiment further defines on the basis of embodiment 9：Vibration chamber, the shake are provided in the dust board 17
It moves intracavitary be provided with and hits ball 171.
When dust board 17 is in original position, ball 171 is hit close to furnace wall, with the increase of cigarette ash on dust board 17, dust-break
Gradually downward, when inside height is lower than close to the height in the outside of furnace wall, strike ball 171 can be slid to separate for the inside of plate 17
The side of furnace wall by strike ball 171 and shakes the device between the inside of chamber, slides the flue dust on dust board 17, then
Dust board 17 resets, and hits vibration chamber close to the side of furnace wall, due to being rigidly connected between dust board 17 and furnace wall, furnace wall also can
It shakes with it, the cigarette ash being attached on furnace wall is shaken off, is killed two birds with one stone.
Embodiment 12：
The present embodiment further defines on the basis of embodiment 4：The door includes doorframe 22 and door curtain 21, the doorframe
The roller bearing driven by drawstring 26 is provided on 22, the upper edge roller bearing of the door curtain 21 is axially fixed on roller bearing；
Sleeve 25 is provided on the doorframe 22, the roller bearing is mounted in sleeve 25 by bearing, is set below the sleeve 25
It is equipped with the notch passed in and out for door curtain 21.
21 top of door curtain is fixed on roller bearing, and drawstring 26 drives door curtain 21 during roller bearing rotation that can be wrapped in shaft
Or discharged from shaft, to realize the unlatching and closure of door.Roller bearing is arranged in sleeve 25, on the one hand prevents roller bearing from being knocked
It touches, another aspect construction site dust may be bigger, if dust over time is tired out between roller bearing and drawstring 26 without sleeve 25
Product, it is possible that the Caton phenomenon between drawstring 26 and roller bearing.
Embodiment 13：
The present embodiment further defines on the basis of embodiment 12：21 bottom end of door curtain is arranged along 21 edge of door curtain
There is faller 27；
Sliding slot 221 is provided on the both sides that the doorframe 22 is vertically arranged, being provided on the door curtain 21 or faller can be in cunning
The sliding block 231 slided in slot 221, the width of rebate of the sliding slot 221 are less than the diameter of sliding block 231.
Or there is wind in construction site, if then 21 lower end of door curtain does not have weight that may hike up, cause humidity in canopy, temperature dissipate
It loses.Sliding block 231 can slide in sliding slot 221, reduce the gap between door curtain 21 and doorframe 22, reduce temperature of shed, humidity
Lost speed.
Embodiment 14：
The present embodiment further defines on the basis of embodiment 13：Guide part is provided at 221 top inlet of sliding slot
222, the width of the guide part 222 is sequentially reduced from top to bottom.
Guide part 222 is arranged in 221 top of sliding slot, and when sliding block 231 enters sliding slot 221, guide part 222 can play one
Guide shoe 231 is directed at the effect of sliding slot 221, and sliding block 231 caused by anti-limited slip block 231 and sliding slot 221 are not aligned with is stuck in cunning
The phenomenon that 221 inlet of slot.
It is recommended that construction technology process
Technique preparation --- test by equipment and pipe system production, installation --- roof insulating is set up --- steam press maintenance system debug
--- temp measuring system component and fitting is pre-buried, installs --- concreting --- steam curing and warm and humid monitoring for receipts.
1, equipment uses principle：
Drawing is conscientiously familiar with, according to precasting yard facilities, configuration maintenance floor plan.Tissue related technical personnel's establishment is applied
Work scheme, and confide a technological secret to construction personnel.It is needed to organize relevant device and materials arrival in advance according to construction site, and
Ensure that purchased boiler, biomass combustion machine and component and fitting material meet design requirement, site acceptance is qualified.
Boiler should be mounted on well-ventilated, bright and clear, away from room separate at population agglomeration, and should have enough photographs
Bright, cooling and antifreezing measures.Boiler Steam outlet is used and is picked out with diameter steel pipe, and connects and is in charge of, 8 is generally connect and is in charge of（It is standby
With）.Canvas rubber tube is connect with the rigid pipe of threeway, threeway tube spacing 5 meters one.
2, roof insulating is set up
T beam is covered with health tarpaulin in time after the completion of pouring（All standing）.And by the canvas rubber tube connected from template two sides
It arranges, connection rubber tube is in charge of with steam (vapor) outlet.
3, steam press maintenance system debug is checked and accepted
Start to carry out steam press maintenance service system every debugging after items of equipment completes installation, by project management department technical staff
After debugging is qualified and management is reported to carry out an acceptance inspection it, can be carried out after management acceptance(check) using.
4, temp measuring system component and fitting is pre-buried, installs
The built-in line of internal temperature measurer should be embedded into specific location according to the T beam different parts of required survey before pouring T beam,
The length of built-in line is reserved according to actual requirement.
5, concreting
Start to pour T beam concrete after the built-in line of temperature measurer installs.
6, steam curing and warm and humid monitoring
Biomass combustion machine crater is directed at boiler combustion storehouse after the completion of preparation, combustor fills it up with biomass fuel,
Startup power supply adjusts temperature, reaches 90 DEG C of opening valves to water temperature in boiler, start to be conserved for steam, while to warm and humid
Situation is monitored.Temperature in paulin is measured, if temperature is excessively high, should adjust in time and reduce combustor burn rate, to reach drop
Low temperature effect.If temperature is too low, combustor burn rate is tuned up in time, to reach temperature rise effect.
6.1 it is concrete steam-cured be divided into it is quiet stop, heat up, constant temperature, cooling 4 stages.
During 6.2 is steam-cured, special messenger is sent to monitor the situation of change of heat preservation temperature of shed at any time, every 1~2h surveys a temperature,
And make a record, to infer that concrete strength provides foundation.
（1）T beam curing system
Beam will set up brooder immediately and use steam curing into health, health is heated after the completion of pouring.Beam making bench two in beam field
Side is laid with jet chimney, air hole at the every 1m setting 1 of pipeline, and steam valve is arranged before pipeline, adjusts steam discharge at any time
Amount is to control health temperature.Meanwhile when steam curing, it has to be noted that：Because the surface coefficient of beam body is larger, coagulation when steam curing
The warming and cooling rate of soil is no more than 10 DEG C/h and 15 DEG C/h respectively.Forbid the unexpected lifting of temperature；The ratio of mud is suitably turned down, beam body
The easily cooling position such as edge, end and edge, especially reinforce heat preservation.Forbid sprinkling water in toward concrete；Steam curing temperature
Degree is no more than 80 DEG C, and conditioned time controls so that concrete design strength 80% is advisable.
（2）Intelligent temperature control
The health of beam is responsible for by special messenger, pays attention to monitoring internal temperature at any time and plays the temperature conditions of not temperature, controls to temperature
System, temperature must not be lower than 25 DEG C within 7 days, and to prevent temperature difference crack, beam surface and internal temperature difference is no more than 25 DEG C.
Live responsible person wants the observation of every two hour, record temperature data, and files.Pumping of prostressed duct in brooder daytime into
Row vacuum grouting, each hour 48 hours thermometric is primary in the process and after mud jacking for mud jacking；Mud jacking water temperature carries out every disk slurry and mixes and stirs use
Water management measurement, and per half an hour surveys a slurry temperature and is checked.Period must not remove brooder and must keep beam body both ends
Covering is tight.Concrete is blocked using construction in brooder, plastic cloth covers health.
（3）Tool-type roof insulating
Steam curing uses pedestal roof insulating, and the effect of roof insulating is to provide a closed sky for the steam curing of precast beam
Between, keep the temperature around beam body relatively stable.
Roof insulating length 32m, to use convenient for hanging（7*2+6*3）M, totally 5 sections carry out assembly combination, according to live real
Border measures maximum width, high size 2.3*2.5 after T beam forms is installed, therefore my processing steam curing shed clear span is 2.6m, only
High 2.6m, using [8cm lipped channel, 25*1.5mm square steel tube, 30*15mm rectangular steel pipe and color steel plate gather stupid insulation sandwich board
Set up composition, steam curing shed it is closed at one end, the other end is left a door unlocked.
Biomass fuel low-voltage high-temperature boiler applications are solved in High aititude, extremely frigid zones concrete curing case because of the temperature difference
Change the table temperature difference in big and concrete caused greatly concrete surface, deep layer problem of Cracking.
Biomass fuel low-voltage high-temperature boiler applications are in High aititude, extremely frigid zones concrete curing case.Combustor is adjustable
The temperature difference, biomass granule fuel are to be eventually fabricated molding environment-protecting fuel using forest and agricultural biomass as raw material, and calorific value is high, and burning is filled
Point, it is a kind of renewable energy of clean low-carbon.No pollution to the environment simultaneously, burning consumptive material are low.Operating cost is greatly reduced,
Shorten the duration.
7, quality controls
7.1 quality standard
To requirement, error involved in work progress in strict accordance with design requirement and《Technical specification for highway bridge construction》
（JTG/T F50-2011）,《Highway maintenance technical specification》（JTG H10-2009）,《The examination of highway engineering cement and cement concrete
Test regulation》（JTG E30-2005）It is executed Deng the existing relevant laws and regulations regulation of country.
7.2 construction weights, key points control
It is familiar with drawing, arranges curing system and be equipped with position, assembles equipment, associated conduit connection in strict accordance with equipment specification
It is executed in strict accordance with scheme.
It carries out technique preparation, arrangement and method for construction and technical work of telling somebody what one's real intentions are, checks leakproofness between each connecting end socket tube, whether there is or not leakages
Gas phenomenon, whether boiler pressure is normal, and each steam nozzle goes out whether vapour is uniform, and whether biomass combustion machine adjusting size is controllable
Deng.
External heating temperature is adjusted in time according to measurement young concrete internal temperature, is guaranteed internal and external equilibrium, is measured wet
Whether degree meets maintenance humidity requirement.
8, safety measure
The temporary electricity of construction site in strict accordance with《Construction site temporary electricity technical specification of security》Related specification regulation hold
Row.
Reinforce using safety management to construction site small machine, boiler, combustor, adheres to that daily maintenance is safeguarded, periodically
Safety inspection is done, is cut off the power immediately when not used.
Perfect construction safety guarantee system is established, the safety inspection of construction operation is reinforced, it is ensured that job standardization, specification
Change.
9, environmental protection measure
Construction site includes that the materials such as tubing, accessory used in work surface, utensil, valve, equipment are whole by the stacking of different size model
Together, Sign Board is hung.
Biomass waste residue after burning is cleared up in time, and is loaded into bag conveniently, pours into designated position, it is ensured that construction site
Cleaning.
Above-mentioned construction technology process is a kind of process of construction technology in the application, is not intended to limit the guarantor of the application
Protect range.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will fall in this Shen
It please be within disclosed scope and spirit.More specifically, disclose in the application, drawings and claims in the range of, can
With the building block and/or a variety of variations and modifications of layout progress to theme combination layout.In addition to building block and/or layout
Outside the modification and improvement of progress, to those skilled in the art, other purposes also be will be apparent.
Claims (10)
1. a kind of high and cold low pressure area Precast T-Beam steam press maintenance method, which is characterized in that by T beam be placed in maintenance canopy in, to its into
Row：
It is quiet to stop：10 DEG C~20 DEG C of temperature are kept in maintenance canopy, 2~6h of soaking time；
Heating：Temperature in maintenance canopy is increased to 40 DEG C~50 DEG C, heat preservation is until concrete strength reaches specified cooling demoulding
Intensity；
Cooling：Reduction conserves the temperature in canopy to canopy internal-external temperature difference≤20 DEG C.
2. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 1, which is characterized in that the heating
In step, raised speed≤15 DEG C of temperature/h.
3. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 1, which is characterized in that the cooling
In step, first with the speed cooling 3-5h of 4-6 DEG C/h, maintenance roc internal-external temperature difference≤20 are then cooled to the speed of 9-11 DEG C/h
℃。
4. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 1, which is characterized in that described specified
Cooling demoulding strength be concrete design strength 75%-85%.
5. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 1, which is characterized in that the steaming used
Pressing curing means includes boiler（1）With with boiler（1）The roof insulating of connection（2）, wherein
The boiler（1）Including burner hearth and the flue gas header being connected with the hearth；
Fuel inlet is provided on the burner hearth（10）It is exported with ashes（12）, horizontal water tube is provided in burner hearth（13）, the cross
Water pipe（13）Arrival end be connected with water tank；
Exhanst gas outlet is provided in the flue gas header（14）, steam manifold is provided in flue gas header（15）, the steam manifold
（15）With horizontal water tube（13）Outlet, and the steam manifold（15）On be provided with steam outlet pipe（11）, the steam outlet pipe（11）
Outlet be pierced by flue gas header be with outside flue gas header；
The roof insulating（2）Including support frame, cover the heat and moisture preserving cloth as ceiling and canopy side wall on the support frame（21）With
At least one is located at the door on canopy side wall, the steam outlet pipe（11）Outlet be located at roof insulating（2）It is interior.
6. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 1, which is characterized in that the heat preservation
Canopy（2）Interior material is internally provided with the first device for monitoring temperature, roof insulating（2）Inside it is provided with second temperature monitoring device, institute
State steam outlet pipe（11）On be provided with third device for monitoring temperature and flow regulator, first device for monitoring temperature, second
Device for monitoring temperature, third device for monitoring temperature and flow regulator are connected with single-chip microcontroller.
7. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 1, which is characterized in that the horizontal water
Pipe（13）Lower section be provided with branching block（16）, the branching block（16）It is fixed by the connecting rod in burner hearth；
The branching block（16）Exhaust gases passes are formed between inboard wall of burner hearth.
8. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 3, which is characterized in that the flue gas
The dust board that can be stirred downwards is provided with above channel（17）, the dust board（17）Furnace wall is mounted on by shaft on one side
On, one side far from furnace wall is fixed on branching block by lower section（16）Or the spring in connecting rod（18）Support.
9. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 5, which is characterized in that the dust-break
Plate（17）There are two pieces or more, is circumferentially mounted on furnace wall.
10. high and cold low pressure area Precast T-Beam steam press maintenance method according to claim 5, which is characterized in that the dust-break
Plate（17）It is inside provided with vibration chamber, the vibration is intracavitary to be provided with strike ball（171）.
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| CN109571735A (en) * | 2019-02-22 | 2019-04-05 | 云南建投第十建设有限公司 | Green bio low-voltage high-temperature steam press maintenance system |
| CN111763099A (en) * | 2020-08-04 | 2020-10-13 | 陕西建工集团股份有限公司 | Low-temperature hot water maintenance system for profiled steel sheet composite floor slab and winter construction method |
| CN112339095A (en) * | 2020-10-26 | 2021-02-09 | 中国十七冶集团有限公司 | Comprehensive constant-temperature steam curing method |
| CN113585083A (en) * | 2021-08-06 | 2021-11-02 | 万玉楼 | Grouting equipment and method used between ribbed steel plate and T-shaped beam |
| CN114953142A (en) * | 2022-06-16 | 2022-08-30 | 中铁十四局集团第一工程发展有限公司 | Annular production line for intelligently steaming and curing annular prefabricated beam at high speed |
| CN115182604A (en) * | 2022-07-29 | 2022-10-14 | 中建西部建设北方有限公司 | Mass concrete curing method, device and medium |
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| CN113585083A (en) * | 2021-08-06 | 2021-11-02 | 万玉楼 | Grouting equipment and method used between ribbed steel plate and T-shaped beam |
| CN114953142A (en) * | 2022-06-16 | 2022-08-30 | 中铁十四局集团第一工程发展有限公司 | Annular production line for intelligently steaming and curing annular prefabricated beam at high speed |
| CN114953142B (en) * | 2022-06-16 | 2024-05-03 | 中铁十四局集团第一工程发展有限公司 | Annular production line is steamed to precast beam intelligence for high-speed in ring city |
| CN115182604A (en) * | 2022-07-29 | 2022-10-14 | 中建西部建设北方有限公司 | Mass concrete curing method, device and medium |
| CN115182604B (en) * | 2022-07-29 | 2023-08-22 | 中建西部建设北方有限公司 | Large-volume concrete curing method, device and medium |
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