CN102864793B - Test device for simulating permafrost region well heat insulation or heating - Google Patents
Test device for simulating permafrost region well heat insulation or heating Download PDFInfo
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- CN102864793B CN102864793B CN201210196967.2A CN201210196967A CN102864793B CN 102864793 B CN102864793 B CN 102864793B CN 201210196967 A CN201210196967 A CN 201210196967A CN 102864793 B CN102864793 B CN 102864793B
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Abstract
The invention relates to a test device for simulating permafrost region well heat insulation or heating. The test device is characterized in that a test tank is a circular interlayer barrel body consisting of an outer ring, an inner ring, a top plate and a bottom plate, a soil body is filled in an interlayer, a refrigerating liquid circulation passage is arranged inside the top plate and the bottom plate, is connected with a refrigerating temperature control device and is in contact with the soil body, water is filled in a water tank, the water tank is arranged in the test tank, a heat insulation barrel is placed between the water tank and the test tank, heat insulation covers are placed on and under the water tank, a water replenishing device is connected with a water tank bottom plate through a water replenishing pipe, a water pressure gauge is arranged on the water replenishing pipe, a water pumping device is connected with a water tank top cover through a water pumping pipe, the water pumping pipe is inserted into water of the water tank, a flow meter is arranged on the water pumping pipe, a heating temperature control device is connected with a heating pipe through a conducing wire, the heating pipe is inserted into the water of the water tank, and temperature sensors are arranged in the solid body and the water of the water tank and are respectively connected with a digital collecting instrument. The test device has the advantages that the permafrost region well is simulated, the reasonable well diameter, the water pumping speed, the heat insulation thickness and the power of a heating device are obtained, and the goals of energy saving and environment protection are reached.
Description
Technical field
The present invention relates to a kind of experimental rig of simulating Permafrost Area well insulation or heating.
Background technology
Carry out engineering construction or when life in Permafrost Area, water must be provided, but these areas are throughout the year in frozen state, especially to winter, the world of ice and snow everywhere, is difficult to find the water source not freezing.Fortunately, below the ever-frozen ground layer of certain thickness (several meters to rice up to a hundred), may exist and not freeze water, be called infrapermafrost water, draw water by well-digging, water source can be provided.But, still exist some problems to need to solve.Infrapermafrost water did not freeze originally, while passing through ever-frozen ground layer in pump process, and meeting and frozen soil layer generation interchange of heat, temperature reduces, thereby may freeze, and water be can't pump out.Therefore need to take certain measure, for example, around well, add insulation layer or place heater in well the inside, not exclusively freeze with the water that ensures well the inside.The possibility that water in well freezes and on-the-spot hydrogeological conditions and the measure of taking are relevant, as thickness, the power of heater etc. of the hydraulic pressure of the thickness of ever-frozen ground layer and temperature, infrapermafrost water, well diameter, pump-out, the speed of drawing water, insulation layer.In addition, in Permafrost Area, the energy is very valuable, also will consider energy-conservation requirement when well is taken measures.
Before well-digging, need to carry out simulated test, according to on-the-spot hydrogeological conditions, research obtains rational well diameter, the speed of drawing water, insulation layer thickness, heater power etc.Therefore, find a kind of can simulate Permafrost Area well water pumping process and insulation is set or the model test apparatus of heater very necessary, be also scientific and technical personnel, engineers and technicians' problem demanding prompt solution.
Summary of the invention
For the Permafrost Area Practical Project problem of drawing water of digging a well, object of the present invention aims to provide a kind of experimental rig of simulating Permafrost Area well insulation or heating.In device, soil body material is contained in test tank, and the test tank base plate being connected with refrigeration temperature regulating device contacts with the soil body with top board, makes cooling soil body, thus the roadbed on permafrost site in simulation field.Water pot is placed on test tank inside, and is connected with water plug with water replanishing device, the pump process of simulation well.According to test needs, at water pot outer setting heat-preserving container or place heating tube in water pot, insulation or heating measure that simulation well is taked in pump process.
The object of the present invention is achieved like this:
Simulate an experimental rig for Permafrost Area well insulation or heating, containing sample carrier outer ring, test tank inner ring, test tank top board, test tank base plate, freezing liquid circulation canal, the first refrigeration temperature regulating device, the second refrigeration temperature regulating device, the soil body, water pot, heat-preserving container, insulation cover, filling pipe, water replanishing device, water pressure gauge, drinking-water pipe, water plug, flow meter, heating tube, heating and temperature controlling device, the first temperature pick up and the second temperature pick up, data collecting instrument.Test tank is the circular interlayer staving being made up of sample carrier outer ring, sample carrier inner ring, sample carrier top board and sample carrier base plate, in interlayer, fill the soil body, test tank top board and sample carrier base plate interior have freezing liquid circulation canal, and be connected with the second refrigeration temperature regulating device with the first refrigeration temperature regulating device respectively, sample carrier top board all contacts with the soil body with sample carrier base plate; Water pot is the entirety of a sealing, water pot the inside dress water, water pot is placed on sample carrier inner ring the inside, between water pot and sample carrier inner ring, places heat-preserving container, water pot is placed insulation cover up and down, water replanishing device is connected with water pot base plate by filling pipe, and water pressure gauge is set on filling pipe, and water plug is connected with water pot top cover by drinking-water pipe, drinking-water pipe inserts in the water in water pot, flow meter is set on drinking-water pipe, and heating and temperature controlling device is connected with heating tube by wire, and heating tube inserts in the water in water pot; In the soil body, diverse location arranges the first temperature pick up, and the second temperature pick up is set in the water in water pot, and the first temperature pick up is connected with data collecting instrument respectively with the second temperature pick up, the monitoring temperature of the soil body and the temperature of water.
Above-mentioned test tank outer ring, test tank inner ring, water pot are to be made up of epoxy resin; Test tank top board and base plate are to be made up of almag.
The beneficial effect of advantage of the present invention and generation is:
1, according to actual requirement of engineering, simulate neatly different-diameter well, consider different soil body scopes, take the insulation layer of different-thickness.
2,, by simulated test, according to the hydrogeological conditions of on-the-spot roadbed on permafrost site, research obtains the power of rational well diameter, the speed of drawing water, insulation layer thickness, heater etc.Ensure can dig a well smoothly in Permafrost Area, draw water on the one hand, water source is provided, on the other hand, ensured the energy minimum of the measure consumption of taking, reached the object of energy-saving and environmental protection.
3, can simulate field condition, use solar panels to provide power supply for heating and temperature controlling device and data collecting instrument, thereby select rational solar cell.
Brief description of the drawings
Fig. 1 is schematic perspective view of the present invention.
Fig. 2 is the vertical section schematic diagram of Fig. 1.
Fig. 3 is sample tank bottom and top board front view in Fig. 1.
Fig. 4 is sample tank bottom and the inner freezing liquid circulation canal of top board top view in Fig. 3.
Fig. 5 is sample tank bottom schematic surface in Fig. 1.
Wherein: 1 first refrigeration temperature regulating device; 2-sample carrier top board; 3-soil body; 4-flow meter; 5-drinking-water pipe; 6-insulation cover; 7-heating and temperature controlling device; 8-data collecting instrument; The 9-the first temperature pick up; 10-water replanishing device; 11-test tank outer ring; 12-water pressure gauge; 13-filling pipe; 14-freezing liquid circulation canal; 15-heating tube; The 16-the second temperature pick up; 17-water; 18-water pot; 19-heat-preserving container; 20-test tank base plate; The 21-the second refrigeration temperature regulating device; 22-water plug; 23-test tank inner ring
Detailed description of the invention
The soil body material 3 of the present invention's use is the soil of directly getting from scene or is added water and stirred a kind of material forming by fine grained soil or more coarse grained rubble according to on-the-spot geological conditions later; The water 17 using is the underground water of directly getting from scene or the water containing certain mineral matter configuring according to on-the-spot hydrologic condition.
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described again:
As shown in Figure 1-Figure 3, a kind of experimental rig that can simulate Permafrost Area well insulation or heating, containing test tank outer ring 11, test tank inner ring 23, test tank top board 2, test tank base plate 20, freezing liquid circulation canal 14, the first refrigeration temperature regulating device 1 and the second refrigeration temperature regulating device 21, the soil body 3, water pot 18, water 17, heat-preserving container 19, insulation cover 6, filling pipe 13, water replanishing device 10, water pressure gauge 12, drinking-water pipe 5, water plug 22, flow meter 4, heating tube 15, heating and temperature controlling device 7, the first temperature pick up 9 and the second temperature pick up 16, data collecting instrument 8.Test tank is the circular interlayer staving being made up of sample carrier outer ring 11, sample carrier inner ring 23, sample carrier top board 2 and sample carrier base plate 20.Inner ring 23 epoxy resin poor by heat conductivility, that intensity is high of test tank outer ring 11 and test tank is made; Top board 2 and the test tank base plate 20 of test tank are made up of the almag of good heat conductivity, test tank top board 2 and test tank base plate 20 inside have double helix annular runner as freezing liquid circulation canal 14, and test tank top board 2 is connected with the second refrigeration temperature regulating device 21 with the first refrigeration temperature regulating device 1 by pipeline respectively with test tank base plate 20; Between test tank outer ring 11 and test tank inner ring 23, fill the soil body 3, double helix annular runner 14, test tank top board 2 that freezing liquid after the first refrigeration temperature regulating device 1 freezes, lowers the temperature to freezing liquid with the second refrigeration temperature regulating device 21 flows into test tank top board 2 and test tank base plate 20 inside contact concurrent heat-dissipating exchange with the soil body 3 with test tank base plate 20, thereby the soil body 3 temperature are reduced, the roadbed on permafrost site of simulated field.Water pot 18 is the sealing entirety that the epoxy resin poor by heat conductivility, intensity is high is made, and comprises sidewall, base plate and top cover.Water is filled with 18 and is placed in test tank inner ring 23 the insides, and water is filled with 18 the inside dress water 17, can simulate the well of beating at roadbed on permafrost site.Water replanishing device 10 is connected with water pot 18 base plates by filling pipe 13, water pressure gauge 12 is set, for monitoring hydraulic pressure on filling pipe 13.Water plug 22 is connected with water pot 18 top covers by drinking-water pipe 5, and drinking-water pipe 5 inserts in the water 17 in water pot 18, and flow meter 4 is set on drinking-water pipe 5, for monitoring the flow velocity drawing water.Water replanishing device 10, water plug 22, water pot 18 link together and can simulate the pump process of well.Between water pot 18 and test tank inner ring 23, heat-preserving container 19 is set, water pot base plate and top cover outside arrange insulation cover 6, thus the Insulation in simulation well pump process.Heating tube 15 inserts in the water 17 in water pot 18, and is connected with heating and temperature controlling device 7 by wire, the heating measure in simulation well pump process.The first temperature pick up 9 and the second temperature pick up 16 be laid in the soil body 3 and water 17 in diverse location place, the temperature of the Real-Time Monitoring soil body 3 and water 17.
The groove (as accompanying drawing 4) of different-diameter is carved with on the surface of test tank base plate 20, coordinates water pot 18, test tank outer ring 11 and the test tank inner ring 23 of different-diameter, the heat-preserving container 19 of different-thickness to use.When test, select the water pot 18 of certain diameter according to simulated well diameter, be placed on test tank base plate 20, then select certain thickness heat-preserving container 19 according to the Insulation of intending taking, be placed into water pot 18 outsides, again test tank inner ring 23 is inserted on test tank base plate 20, last, select the test tank outer ring 11 of certain diameter and be inserted on test tank base plate 20 according to the soil body scope of intending considering.Like this, just can simulate the soil body of the well of different-diameter, the insulation layer that adopts different-thickness, consideration different range.
Claims (2)
1. can simulate an experimental rig for Permafrost Area well insulation or heating, containing sample carrier outer ring (11), test tank inner ring (23), test tank top board (2), test tank base plate (20), freezing liquid circulation canal (14), the first refrigeration temperature regulating device (1), the second refrigeration temperature regulating device (21), the soil body (3), water pot (18), heat-preserving container (19), insulation cover (6), filling pipe (13), water replanishing device (10), water pressure gauge (12), drinking-water pipe (5), water plug (22), flow meter (4), heating tube (15), heating and temperature controlling device (7), the first temperature pick up (9) and the second temperature pick up (16), data collecting instrument (8), is characterized in that test tank is by sample carrier outer ring (11), sample carrier inner ring (23), the circular interlayer staving that sample carrier top board (2) and sample carrier base plate (20) form, in interlayer, fill the soil body (3), test tank top board (2) and sample carrier base plate (20) inside have freezing liquid circulation canal (14), and be connected with the second refrigeration temperature regulating device (21) with the first refrigeration temperature regulating device (1) respectively, sample carrier top board (2) all contacts with the soil body (3) with sample carrier base plate (20), water pot (18) is the entirety of a sealing, water pot (18) the inside dress water (17), water pot (18) is placed on sample carrier inner ring (23) the inside, between water pot (18) and sample carrier inner ring (23), place heat-preserving container (19), water pot (18) is placed insulation cover (6) up and down, water replanishing device (10) is connected with water pot (18) base plate by filling pipe (13), water pressure gauge (12) is set on filling pipe (13), water plug (22) is connected with water pot (18) top cover by drinking-water pipe (5), drinking-water pipe (5) inserts in the inner water (17) of water pot (18), flow meter (4) is set on drinking-water pipe (5), heating and temperature controlling device (7) is connected with heating tube (15) by wire, heating tube (15) inserts in the inner water (17) of water pot (18), the interior diverse location of the soil body (3) arranges the first temperature pick up (9), in the inner water (17) of water pot (18), the second temperature pick up (16) is set, the first temperature pick up (9) is connected with data collecting instrument (8) respectively with the second temperature pick up (16), the temperature of the monitoring soil body (3) and the temperature of water (17).
2. by experimental rig of simulating Permafrost Area well insulation or heating claimed in claim 1, it is characterized in that above-mentioned test tank outer ring (11), test tank inner ring (23), water pot (18) are to be made up of epoxy resin, test tank top board (2) and base plate (20) are to be made up of almag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210196967.2A CN102864793B (en) | 2012-06-15 | 2012-06-15 | Test device for simulating permafrost region well heat insulation or heating |
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| CN201210196967.2A CN102864793B (en) | 2012-06-15 | 2012-06-15 | Test device for simulating permafrost region well heat insulation or heating |
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| CN102864793A CN102864793A (en) | 2013-01-09 |
| CN102864793B true CN102864793B (en) | 2014-10-01 |
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| CN103433309B (en) * | 2013-08-20 | 2015-07-15 | 首钢总公司 | Device for controlling and simulating cooling rate of high-speed Steyr air cooling line |
| CN103469832B (en) * | 2013-09-24 | 2015-09-16 | 中国建筑东北设计研究院有限公司 | A kind of foundation pit frozen soil test chamber |
| CN103835707B (en) * | 2013-12-06 | 2017-03-29 | 北京中煤矿山工程有限公司 | A kind of full-scale model test device of simulation depth Shaft Freezing |
| CN104297451B (en) * | 2014-10-23 | 2017-02-15 | 石家庄铁道大学 | Large-grain-size soil body frost heaving performance testing device |
| CN104831763B (en) * | 2015-06-03 | 2017-07-28 | 石家庄铁道大学 | A kind of pile body anti_freeze uplift performance test experimental apparatus and its experimental method |
| CN106049564B (en) * | 2016-08-01 | 2018-01-02 | 辽宁工程职业学院 | A kind of detection means for detecting concrete foundation load metamorphism |
| CN106018756A (en) * | 2016-08-09 | 2016-10-12 | 中国科学院寒区旱区环境与工程研究所 | Thermal insulation test box with functions of water supplement at bottom and temperature control |
| CN108643860B (en) * | 2018-04-12 | 2020-04-10 | 中国人民解放军陆军工程大学 | Antifreezing method for deep well in frozen soil zone and antifreezing deep well |
| CN109838238A (en) * | 2019-02-18 | 2019-06-04 | 中铁第四勘察设计院集团有限公司 | Forced thaw device and method for subway frozen construction |
| CN110331945B (en) * | 2019-03-27 | 2021-12-03 | 中国石油大学(华东) | Polar region drilling platform derrick heat preservation heating experimental device and experimental method |
| CN115266810B (en) * | 2022-08-03 | 2023-05-05 | 哈尔滨工业大学 | Hot rod roadbed frost heaving test device |
| CN116927232B (en) * | 2023-09-13 | 2023-11-28 | 启东晶尧光电科技有限公司 | Pile foundation structure of photovoltaic power station and pile foundation construction process |
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