Summary of the invention
The invention provides and a kind ofly overcome present pile tube maintaining process deficiency, realized the pretensioned prestressed concrete pipe pile centrifugal back water curing method and the water curing device of environmental protection production, energy-conservation production simultaneously.
The centrifugal back water curing of pretensioned prestressed concrete pipe pile of the present invention method is characterized in that,
Step 1) sets up autoclave condensation water to reclaim and surplus vapour heating storage tank, and condensed water in the still kettle and surplus vapour are introduced autoclave condensation water recovery and surplus vapour heating storage tank;
Step 2) the band punching block pile tube after centrifugal is put into steam-cured pond, after waiting to be with the punching block pile tube to fill steam-cured pond, open the electrically-controlled valve of water inlet, steam-cured pond, autoclave condensation water reclaimed and surplus vapour heating storage tank in condensed water introduce steam-cured pond and with this water as curing water, treat steam-cured lid on the whole punching block bonnet of curing water submergence, the surplus vapour that autoclave condensation water reclaims and surplus vapour heats in the storage tank is introduced in the steam-cured pond, the water that curing water is heated to pile tube is supported 80~90 ℃ of temperature again; Be not enough to the whole punching block of submergence if introduce the condensed water in steam-cured pond, replenish curing water, the whole punching block of curing water submergence in steam-cured pond then for steam-cured pond; If the surplus vapour of being introduced is not enough to curing water is heated to the water of pile tube and supports 80~90 ℃ of temperature, then introduce steam, the water that curing water is heated to pile tube is supported 80~90 ℃ of temperature,
Step 3) keeps water to support 80~90 ℃ of temperature, and to the pile tube of the band punching block in the steam-cured pond steam-cured 4~5 hours,
After step 4) is treated steam-cured finishing, the hot water in described steam-cured pond is evacuated in the steam-cured pond of another one again, realizes recycling of hot water.
Water curing device of the present invention, comprise: steam-cured pond, be provided with water-gas port and hot water outlet in steam-cured pond, described water curing device comprises that also autoclave condensation water reclaims and surplus vapour heating storage tank and still kettle, on autoclave condensation water recovery and surplus vapour heating storage tank, be provided with surplus vapor outlet, surplus vapour inlet, condensation-water drain and condensing water inlet, on still kettle, be provided with the steam inlet, the water-gas port in described steam-cured pond and autoclave condensation water reclaims and the surplus vapor outlet of surplus vapour heating storage tank between be provided with steam channel, the water-gas port in described steam-cured pond and autoclave condensation water reclaims and the condensation-water drain of surplus vapour heating storage tank between be provided with condensation water channel, described condensation water channel is by series connection successively and the valve lock that is communicated with by pipeline, the first condensed water check valve, the first one-stage centrifugal formula heat-exchanger pump, the second condensed water check valve and first electrically-controlled valve are formed, described steam channel is by connecting successively and forming by first steam valve and first electrically-controlled valve that pipeline is communicated with, autoclave condensation water reclaim and the condensation-water drain of the condensed water import of surplus vapour heating storage tank and still kettle between be communicated with by the 3rd electrically-controlled valve and pipeline, be communicated with by second steam valve and pipeline between the steam inlet that autoclave condensation water recovery and surplus vapour heat storage tank and the steam (vapor) outlet of still kettle.
Compared with prior art, the present invention has following advantage:
The present invention at first carries out the water storage leakproof to the steam-cured pond in the existing pile tube production technology and transforms, set up autoclave condensation water recovery and surplus vapour heating storage tank (being of a size of 3000 * 4000 * 3000), electric heater unit is installed in the storage tank bottom, be convenient to the timely supply of hot water, steam-cured pond increases each of water inlet and water outlet one-stage centrifugal formula heat-exchanger pump and the relevant auxiliary facility of water circulation.A motor-driven valve is respectively installed at water inlet pipe and outlet pipe place at steam-cured Chi Chu, the digital display type temperature detecting resistance is installed to steam-cured pond monitoring temperature in steam-cured pool wall middle part, and the water curing system reform of the centrifugal back of pretensioned prestressed concrete pipe pile finishes;
The centrifugal back of described pretensioned prestressed concrete pipe pile water curing system comprises: reclaim and surplus vapour heating storage tank in steam-cured pond, autoclave condensation water, one-stage centrifugal formula heat-exchanger pump, check valve, water inlet, delivery port, seamless pipe, electrically-controlled valve, steam valve, temperature controller, valve lock, spout hole, above various piece connects into a water curing system by seamless pipe.
Steam-cured pond in the water curing system of the centrifugal back of described pretensioned prestressed concrete pipe pile comprises: water inlet, delivery port, spout hole, temperature controller.
When the band punching block pile tube after centrifugal is put into steam-cured pond, after waiting to be with the punching block pile tube to fill steam-cured pond, open the electrically-controlled valve of water inlet, steam-cured pond and the valve lock of storage tank, by autoclave condensation water reclaim and the one-stage centrifugal formula heat-exchanger pump at surplus vapour heating storage tank place reclaims autoclave condensation water and the hot water of surplus vapour heating storage tank be drawn into steam-cured in, after treating the whole punching block of hot water submergence, open the steam valve at storage tank place, the surplus vapour by still kettle gradually water temperature is risen to about 90 ℃ and the constant temperature regular hour (thermostat temperature control is to realize by temperature controller); Surplus vapour can heat up condensed water after entering storage tank, has saved the power consumption of the heater of storage tank.
The present invention recycles hot water: a, will be after the still kettle step-down discharge surplus vapour part water supply maintenance pond and mend temperature, redundance is discharged into condensation in recovery of still condensed water and the surplus vapour heating storage tank by steam valve, utilizes steam that condensed water is added stand-by heat simultaneously; B and then take out hot water to the steam-cured pond by one-stage centrifugal formula heat-exchanger pump treats behind steam-cured the finishing the hot water in this pond is evacuated in the steam-cured pond of another one again, realizes recycling of hot water, has saved production cost.
Compared with prior art, the present invention can overcome present pile tube maintaining process deficiency, has realized environmental protection production, energy-conservation production, that is:
The present invention has carried out strict control to the heat that outwards especially discharges to the workshop, the surplus vapour and the condensed water that have heat in the still kettle are introduced condensed water recovery and surplus vapour heating storage tank, avoided the waste heat in the still kettle to flow into workshop or externally discharging, realized the zero-emission of waste heat in the workshop, the environment temperature when having improved shopwork;
The present invention will support technology to the water that the surplus vapour in the still kettle of workshop or externally discharging and condensed water are used for pile tube, reduce energy consumption, realize energy-conservation production." autoclave condensation water reclaims and surplus vapour heating storage tank " technical measures, make the surplus vapour and the condensed water that have heat be able to effective deposit, when the surplus vapour of still kettle and condensed water be discharged into that condensed water reclaims and surplus vapour heating storage tank after, surplus vapour and condensed water are stored in condensed water recovery and the surplus vapour heating storage tank, water-the gas port that utilizes condensation water channel and steam-cured pond 11 reclaim with autoclave condensation water and the surplus vapor outlet of surplus vapour heating storage tank 12 between be communicated with annexation, surplus vapour and condensed water are introduced steam-cured pond, participation is supported the water of pile tube, and surplus vapour that is discharged and condensed water in the former pile tube production are fed to pile tube production.
Orientation discharging and utilization along with surplus vapour and condensed water, in terms of existing technologies, the heat that is released among the workshop significantly reduces, and environment temperature is minimized, thereby the work situation of field worker is improved, and good work situation then helps the minimizing accident to take place.
The present invention all recycles the condensed water of surplus vapour of still kettle and discharge, utilized heat energy fully, realize the utilization once more of condensed water, environment temperature when having improved shopwork simultaneously, also reduced simultaneously the maintenance cost of pile tube, compare with the cost of original processes expend, saved about 40% cost.Adopt the method maintenance pile tube, demoulding strength is consistent with the intensity of conventional method maintenance, has proved that the method is feasible.Simultaneously because of after the tubular pile centrifugal moulding, setting and harden has certain intensity and durability gradually, and this process mainly is that the hydration by cement realizes; Hydration effect and concrete environment temperature, humidity and the maintenance effect of cement have confidential relation, especially early curing, if curing time is too short or can not keep moisture state in curing period, moisture in the concrete is evaporation rapidly, concrete surface produces the crack because of drying shrinkage or forms the ventilative infiltration of capillary network, and concrete impermeability is sharply reduced.Adopt water curing, owing to guaranteed good hydrated cementitious environment temperature, humidity and maintenance effect, generate crystalline state or colloidal state hyrate, block concrete capillary channel, reduce the voidage of inside concrete, strengthen concrete density, thereby obtain good impermeability, frost resistance and durability.
The specific embodiment
Embodiment 1
The centrifugal back water curing of a kind of pretensioned prestressed concrete pipe pile method:
Step 1) sets up autoclave condensation water to reclaim and surplus vapour heating storage tank 12, and condensed water in the still kettle 18 and surplus vapour are introduced autoclave condensation water recovery and surplus vapour heating storage tank 12;
Step 2) the band punching block pile tube after centrifugal is put into steam-cured pond 11, after waiting to be with the punching block pile tube to fill steam-cured pond 11, open first electrically-controlled valve 191 at 11 water inlets, 16 places, steam-cured pond, autoclave condensation water reclaimed and surplus vapour heating storage tank 12 in condensed water introduce steam-cured pond 11 and with this water as curing water, treat steam-cured lid on the whole punching block bonnet of curing water submergence, the surplus vapour that autoclave condensation water reclaims and surplus vapour heats in the storage tank 12 is introduced in the steam-cured pond 11, the water that curing water is heated to pile tube is supported 80~90 ℃ of temperature again; Be not enough to the whole punching block of submergence if introduce the condensed water in steam-cured pond, replenish curing water, the whole punching block of curing water submergence in steam-cured pond then for steam-cured pond; If the surplus vapour of introducing is not enough to curing water is heated to the water of pile tube and supports 80~90 ℃ of temperature, then introduce steam, the water that curing water is heated to pile tube is supported 80~90 ℃ of temperature,
Step 3) keeps water to support 80~90 ℃ of temperature, and to the pile tube of the band punching block in the steam-cured pond steam-cured 4~5 hours,
After step 4) is treated steam-cured finishing, the hot water in described steam-cured pond is evacuated in the steam-cured pond of another one again, realizes recycling of hot water.
Embodiment 2
A kind of water curing device that is used to implement the centrifugal back water curing of described pretensioned prestressed concrete pipe pile method, comprise: steam-cured pond 11, be provided with water-gas port 16 and hot water outlet 17 in steam-cured pond 11, described curing means comprises that also autoclave condensation water reclaims and surplus vapour heating storage tank 12 and still kettle 18, on autoclave condensation water recovery and surplus vapour heating storage tank 12, be provided with surplus vapor outlet, surplus vapour inlet, condensation-water drain and condensing water inlet, on still kettle 18, be provided with steam inlet and steam (vapor) outlet, the water-gas port in described steam-cured pond 11 and autoclave condensation water reclaims and the condensation-water drain of surplus vapour heating storage tank 12 between be provided with condensation water channel, the water-gas port in described steam-cured pond 11 and autoclave condensation water reclaims and the surplus vapor outlet of surplus vapour heating storage tank 12 between be provided with steam channel, described condensation water channel is by series connection successively and the valve lock 122 that is communicated with by pipeline, the first condensed water check valve 151, the first one-stage centrifugal formula heat-exchanger pump 131, the second condensed water check valve 152 and first electrically-controlled valve 191 are formed, described steam channel is by connecting successively and forming by first steam valve 1201 and first electrically-controlled valve 191 that pipeline is communicated with, autoclave condensation water reclaim and the condensation-water drain of the condensed water import of surplus vapour heating storage tank 12 and still kettle 18 between be communicated with by the 3rd electrically-controlled valve 193 and pipeline, be communicated with by second steam valve 1202 and pipeline between the steam inlet that autoclave condensation water recovery and surplus vapour heat storage tank 12 and the steam (vapor) outlet of still kettle 18.
In the present embodiment, on the hot water outlet in steam-cured pond 11, be connected with second electrically-controlled valve 192 and the second one-stage centrifugal formula heat-exchanger pump 132 in turn, so that after the pile tube maintenance in this steam-cured pond 11 finishes, the hot water in this steam-cured pond 11 is introduced other steam-cured pond, thereby it is reused.
In the present embodiment, with reference to Fig. 1, can link together by a threeway (not drawing among the figure) between condensation water channel and the steam channel, that is: first steam valve 1201 in the steam channel is connected first port of threeway, the second condensed water check valve 152 in the condensation water channel is connected second port of threeway, and the 3rd port with threeway is connected with first electrically-controlled valve 191 again.
Below main Points of the present invention is remake some explanations:
Step 1) is carried out the water storage leakproof to the steam-cured pond in the existing pile tube production technology and is transformed, set up autoclave condensation water recovery and surplus vapour heating storage tank 12 (being of a size of 3000 * 4000 * 3000), electric heater unit is installed in storage tank 12 bottoms, be convenient to the timely supply of hot water, steam-cured pond 11 increases each of water inlet and water outlet one-stage centrifugal formula heat-exchanger pump and the relevant auxiliary facility of water circulation.A motor-driven valve is respectively installed at water inlet pipe and outlet pipe place at steam-cured Chi Chu, the digital display type temperature detecting resistance is installed to steam-cured pond monitoring temperature in steam-cured pool wall middle part, and the water curing system reform of the centrifugal back of pretensioned prestressed concrete pipe pile finishes;
Steam-cured pond in the water curing system of the centrifugal back of described pretensioned prestressed concrete pipe pile comprises: water inlet 16, delivery port 17, spout hole 123, temperature controller 121.
Step 2) the band punching block pile tube after centrifugal is put into steam-cured pond 11, after waiting to be with the punching block pile tube to fill steam-cured pond 11, open the electrically-controlled valve 19 at 11 water inlets, 16 places, steam-cured pond and the valve lock 122 of storage tank, reclaim and the one-stage centrifugal formula heat-exchanger pump 122 at surplus vapour heating storage tank 12 places reclaims autoclave condensation water and the hot water of surplus vapour heating storage tank 12 is drawn in the steam-cured pond 11 by autoclave condensation water, after treating the whole punching block of hot water submergence, open the steam valve 120 at storage tank 12 places, the surplus vapour by still kettle gradually water temperature is risen to about 90 ℃ and the constant temperature regular hour (thermostat temperature control is to realize by temperature controller 121); Surplus vapour can heat up condensed water after entering storage tank, has saved the power consumption of the heater of storage tank.
Step 3) is recycled hot water: a, will be after the still kettle step-down discharge surplus vapour part water supply maintenance pond and mend temperature, redundance is discharged into condensation in recovery of still condensed water and the surplus vapour heating storage tank 12 by steam valve 120, utilizes steam that condensed water is added stand-by heat simultaneously; B and then take out hot water to the steam-cured pond by one-stage centrifugal formula heat-exchanger pump 13 treats behind steam-cured the finishing the hot water in this pond is evacuated in the steam-cured pond of another one again, realizes recycling of hot water, has saved a large amount of costs.