CN104963381A - Anti-freeze deep well - Google Patents
Anti-freeze deep well Download PDFInfo
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- CN104963381A CN104963381A CN201510400409.7A CN201510400409A CN104963381A CN 104963381 A CN104963381 A CN 104963381A CN 201510400409 A CN201510400409 A CN 201510400409A CN 104963381 A CN104963381 A CN 104963381A
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- water
- deep well
- air
- well
- antifreeze
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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Abstract
The invention discloses an anti-freeze deep well which comprises a casing pipe (6) which downwards penetrates through a perennial frozen earth layer (9) and reaches a water-bearing layer, a water pumping device (7) arranged in the casing pipe (6), a water supply valve (4) communicated with an outlet of the water pumping device (7) and an air supply valve (2) communicated with the outlet of the water pumping device (7), and the other end of the air supply valve (2) is communicated with a high pressure air source (1). By means of the anti-freeze deep well, freeze of the anti-freeze deep well in the perennial frozen earth layer can be easily and effectively prevented.
Description
Technical field
The invention belongs to antifreeze water fetching device technical field, particularly a kind of good freezing protection effect, antifreeze deep well that reliability is high.
Background technology
Along with the needs of China's development of the West Regions and frontier construction, at some High aititude, winter climate severe cold, the area of harsh environmental conditions, needs to offer resource of water supply well.Some water supply well needs through permafrost (permafrost haorizon), to exploit the water in below permafrost aquifer.This kind of well majority is artesian well, and the dynamic and static water level of well can rise within the scope of permafrost.When in well, water pump output exceedes user's water demand, for saving water resource, reduce energy consumption, water pump can quit work automatically.When the termination of pumping time is longer, because the heat of water in well constantly scatters and disappears to permafrost, cause ever-frozen ground layer region wall casing, water pump or air lift intake pipe, outlet pipe bulk freezing, cannot water outlet.Because the earth's surface heat in summer cannot be delivered to permafrost, well, once freeze, often cannot be repaired.Frigid plateau region well-digging cost is very high, the accident that the well that a lot of cost more than 1,000,000 yuan has occurred freezes, scraps.
Existing well means to prevent freezing mainly electric tracing technology, as Chinese utility model patent application " based on microcomputer-controlled oil field water well defroster " (application number: 201420058022.9, publication date: 2014.05.22), by adding insulation induction coil on well outlet pipe, utilizing electrified regulation mode, easily there is the problem of frozen block accident in the delivery line solving existing oil field water well in the winter time.Chinese invention patent application " anti-freezing process of the supporting lubricator of injection well testing and cable " (application number: 201110222550.4, publication date: 2012.01.11), its general principle is also solved the anti-freeze problem of well outlet pipe by electrified regulation.Existing well means to prevent freezing is all solve the antifreeze problem exposing in atmosphere or be embedded in active layer (namely freeze winter, thawing in summer, generally also claim frozen soil layer without permafrost is regional, the degree of depth is generally within 2 ~ 3 meters) middle pipeline winter.And the degree of depth of permafrost is generally at tens to one, 200 meters.
Prior art Problems existing is: be in that deep well antifreezing effect in permafrost is poor, reliability is low.
Summary of the invention
The object of the present invention is to provide a kind of antifreeze deep well, good freezing protection effect, reliability are high.
The technical solution realizing the object of the invention is: a kind of antifreeze deep well, comprise and be passed down through the wall casing that permafrost arrives aquifer, the feed water valve being placed in the water plug in described wall casing and communicating with the outlet of water plug, also comprise and export with described water plug the steam supply valve communicated, the other end of described steam supply valve communicates with high-pressure air source.
Quit work period at water plug, utilize high-pressure air source, the water level in water plug and wall casing is depressed into below permafrost.
The present invention compared with prior art, its remarkable advantage:
1, easy construction, cost are low.As antifreeze in adopted electric tracing technology to solve ever-frozen ground stove pipe well, accompanying-heat cable need bury underground tens underground to rice up to a hundred, and construct very difficult, cost is high.The present invention is without the need to changing structure and the drilling technology of pipe well.
2, system is simple, operating cost is low.The frost-resistant principle of electric tracing technology is to provide enough heats and comes antifreeze, and need a direct power supply, power consumption is large.Antifreeze well of the present invention mainly uses equipment to be exactly the air compressor machine of common operating pressure conventional in an engineering, and system is simple, and technology maturation is reliable.The air compressor machine number of starts is few, and operating cost is very low.
3, strong, the convenient management of environmental suitability.The occasion at water source, aquifer below exploitation permafrost, often because geographical position is remote, commercial power supply difficulty, is generally diesel-engine generator set timing power supply.Electric tracing technology needs to keep the without interruption of electric power, requires high to supply of electric power.The present invention is provided with gasholder, and after the work once of air compressor machine short time, can meet the demand of air partition in pipe well in the long period, low to power reguirements, environmental suitability is strong.The start and stop etc. of the keying of valve in system, water pump and air compressor machine, are easy to be designed to automatic operational mode, convenient management.
4, good freezing protection effect, reliability is high.The frost-resistant principle of the antifreeze deep well of the present invention is isolation, the pipeline section being about to freeze stops pumping period at well, with compressed air, the water being arranged in well outlet pipeline is drained, the water level of the well pipeline section being arranged in permafrost is forced down to non-permafrost.Due at ever-frozen ground layer region without water, so can not freeze.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Water position status when Fig. 1 is the antifreeze deep well scheme of the present invention one pumping for water pump.
Fig. 2 is after the present invention's antifreeze deep well scheme one water pump quits work, state when well middle water level is depressed into below permafrost by compressed air.
Water position status when Fig. 3 is the water intaking of the present invention's antifreeze deep well scheme two air lift.
When Fig. 4 is the present invention's antifreeze deep well scheme two air lift water fetching device stopping water intaking, state when well middle water level is depressed into below permafrost by compressed air.
In figure, 1 high-pressure air source, 2 steam supply valves, 3 vent valves, 4 feed water valves, 5 outlet pipes, 6 wall casings, 7 water plugs, 71 intake pipes, 72 air lift air supply pipes, 73 air lift steam supply valves, 8 active layers, 9 permafrost, 10 aquifers, 11 impervious layers, waterline in 12 wells.
Detailed description of the invention
The general principle of the antifreeze deep well of the present invention is: quit work period at water plug, utilize gases at high pressure, the water level in well is depressed into below permafrost.
For reducing costs with easy to use, described gases at high pressure are compressed air.
Above-mentioned principle can with deep well pump or with air lift water fetching device with the use of.As follows with the use of implementation with deep well pump:
As shown in Figure 1, the antifreeze deep well implementation one of the present invention, comprise and be passed down through the wall casing 6 that permafrost 9 arrives aquifer, the feed water valve 4 being placed in the deep well pump 7 in described wall casing 6 and communicating with the outlet of deep well pump 7, also comprise and export with described deep well pump 7 steam supply valve 2 communicated, the other end of described steam supply valve 2 communicates with high-pressure air source-band gasholder air compressor machine.Also comprise vent valve 3, the wall casing 6 that the import of described vent valve 3 is airtight with upper end communicates, and its outlet communicates with air.
Described air presses 1 is provided with gasholder.High-pressure air source also can adopt other can provide the equipment of gases at high pressure, as gas cylinder.
Described deep well pump 7 can be common deep well pump, also can be deep well submerged pump.
Its course of work is as follows:
As shown in Figure 1, when preparing from well water pumping, closing steam supply valve 2, opening vent valve 3.Close after discharging without air in vent valve 3.Open feed water valve 4.At this moment in well, water level 12 rises under the effect of artesian aquifer hydraulic pressure, exceedes deep well submerged pump 7.Start deep well submerged pump 7, because underground water has certain temperature, at water pump running hours, although water continues to permafrost heat radiation in well, owing to constantly there being supplementing of water in aquifer, heat radiation can not cause water freezing in well, and water pump can normally work.In well, water position status as shown in Figure 1.
As shown in Figure 2, when stopping pumping, after closing deep well submerged pump 7, closing feed water valve 4, opening steam supply valve 2, start air compressor machine 1.Compressed air enters in well by pumping line 5 and wall casing 6, and water level in well 12 is pushed back aquifer to permafrost.At this moment be positioned at the deep well submerged pump 7 of ever-frozen ground layer region, pumping line 5 and wall casing 6 all anhydrous, thus can prevent from freezing
As follows with the use of implementation with gas water fetching device:
As shown in Figure 3, the antifreeze deep well implementation two of the present invention, comprise be passed down through permafrost 9 arrive aquifer wall casing 6, be placed in water plug 7 in described wall casing 6 and the feed water valve 4 communicated with the outlet 5 of water plug 7 and steam supply valve 2.
Described water plug 7 is air lift water intaking mechanism.Described air lift water intaking mechanism comprises intake pipe 71, air lift air supply pipe 72, air lift steam supply valve 73 and air compressor 1, described air lift air supply pipe 72 one end communicates with intake pipe 71 bottom, the other end is communicated with air compressor 1 by air lift steam supply valve 73, described steam supply valve 2 one end communicates with the outlet 5 of described intake pipe 71, and its other end communicates with air compressor 1.
Its course of work is as shown in Figure 3:
The first step, in well, water level rises.Steam supply valve 2 cuts out, air lift steam supply valve 73 cuts out, and feed water valve 4 is opened, and in well, water level 12 rises under the effect of artesian aquifer hydraulic pressure, floods well intake pipe lower port.
Second step, air lift is fetched water.Feed water valve 4 continues to be held open state, and steam supply valve 2 cuts out, air lift steam supply valve 73 is opened, and the water of intake pipe lower end mixes with air, proportion reduce, in well hydrostatic and air pressure acting in conjunction under rise to more than ground, realize well water intaking.
3rd step, stops water intaking, reduces water level in well.Feed water valve 4 is closed, and steam supply valve 2, air lift steam supply valve 73 are opened, and compressed air provides tracheae 72 by intake pipe 5 is gentle, and water level in well 12 is pushed back aquifer to permafrost, and well is in antifreeze state.As shown in Figure 4.
Air compressor air storage tank volume calculates according to the out-of-work most long period of molten gas loss, gas piping loss and water pump to be determined.The operating pressure of air compressor machine, depends primarily on artesian aquifer under the effect of hydraulic pressure, and the height exceeding coboundary, aquifer risen in well is relevant with the hydrogeological conditions residing for well, but is not equal to the degree of depth of well.According to general water well drilling experience, this water level lifting height is most at 20m ~ 50m.The pressure needed for the air compressor machine that the present invention is supporting is generally less than 0.8MPa, and belong to usual pressure air compressor machine, equipment is easily chosen, and cost is lower.The Time Calculation that air compressor machine air demand requires according to total measurement (volume) in the above wall casing of frozen soil layer and inflation is determined.
The start and stop of air compressor machine, the switch etc. of valve, adopts the technology such as simple pressure switch to control, and belongs to more traditional, ripe water supply and sewerage system control technology.
According to technical scheme of the present invention, be feasible technically, the cost of device is also lower, can spend less cost, solves large problem.
Claims (6)
1. an antifreeze deep well, comprise and be passed down through the wall casing (6) that permafrost (9) arrives aquifer, the feed water valve (4) being placed in the water plug (7) in described wall casing (6) and communicating with the outlet of water plug (7), it is characterized in that: also comprise the steam supply valve (2) exporting with described water plug (7) and communicate, the other end of described steam supply valve (2) communicates with high-pressure air source (1).
2. antifreeze deep well according to claim 1, is characterized in that: described water plug (7) is deep well submerged pump.
3. antifreeze deep well according to claim 2, is characterized in that: described high-pressure air source (1) is air compressor.
4. antifreeze deep well according to claim 2, is characterized in that: also comprise vent valve (3), and the wall casing (6) that the import of described vent valve (3) is airtight with upper end communicates, and its outlet communicates with air.
5. antifreeze deep well according to claim 1, is characterized in that: described water plug (7) is air lift water intaking mechanism.
6. antifreeze deep well according to claim 5, it is characterized in that: described air lift water intaking mechanism comprises intake pipe (71), air lift air supply pipe (72), air lift steam supply valve (73) and air compressor (1), described air lift air supply pipe (72) one end communicates with intake pipe (71) bottom, and the other end is communicated with high-pressure air source (1) by air lift steam supply valve (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400409.7A CN104963381A (en) | 2015-07-09 | 2015-07-09 | Anti-freeze deep well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400409.7A CN104963381A (en) | 2015-07-09 | 2015-07-09 | Anti-freeze deep well |
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| CN104963381A true CN104963381A (en) | 2015-10-07 |
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| CN201510400409.7A Pending CN104963381A (en) | 2015-07-09 | 2015-07-09 | Anti-freeze deep well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643860A (en) * | 2018-04-12 | 2018-10-12 | 中国人民解放军陆军工程大学 | The antifreeze method of tundra deep well and antifreeze deep well |
| CN110950260A (en) * | 2018-07-18 | 2020-04-03 | 陈元珠 | Water fetching device and water fetching method without leakage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU794121A1 (en) * | 1978-11-04 | 1981-01-07 | Rajkhanov Akhat S | Method of preventing freezing of wells |
| CA2349908A1 (en) * | 2001-06-08 | 2002-12-08 | Corlac Industries (1998) Ltd. | Method and apparatus for preventing flow lines from freezing |
| CN201851084U (en) * | 2010-11-09 | 2011-06-01 | 北京矿大节能科技有限公司 | Defroster for mineshaft |
| CN102213090A (en) * | 2011-06-03 | 2011-10-12 | 中国科学院广州能源研究所 | Method and device for exploiting natural gas hydrate in permafrost region |
| CN202706105U (en) * | 2012-08-23 | 2013-01-30 | 郑州光力科技股份有限公司 | Anti-freezing water delivery device |
| CN204254728U (en) * | 2014-10-24 | 2015-04-08 | 山东华联矿业股份有限公司 | Vertical shaft preventing freeze in winter heating system |
-
2015
- 2015-07-09 CN CN201510400409.7A patent/CN104963381A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU794121A1 (en) * | 1978-11-04 | 1981-01-07 | Rajkhanov Akhat S | Method of preventing freezing of wells |
| CA2349908A1 (en) * | 2001-06-08 | 2002-12-08 | Corlac Industries (1998) Ltd. | Method and apparatus for preventing flow lines from freezing |
| CN201851084U (en) * | 2010-11-09 | 2011-06-01 | 北京矿大节能科技有限公司 | Defroster for mineshaft |
| CN102213090A (en) * | 2011-06-03 | 2011-10-12 | 中国科学院广州能源研究所 | Method and device for exploiting natural gas hydrate in permafrost region |
| CN202706105U (en) * | 2012-08-23 | 2013-01-30 | 郑州光力科技股份有限公司 | Anti-freezing water delivery device |
| CN204254728U (en) * | 2014-10-24 | 2015-04-08 | 山东华联矿业股份有限公司 | Vertical shaft preventing freeze in winter heating system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643860A (en) * | 2018-04-12 | 2018-10-12 | 中国人民解放军陆军工程大学 | The antifreeze method of tundra deep well and antifreeze deep well |
| CN110950260A (en) * | 2018-07-18 | 2020-04-03 | 陈元珠 | Water fetching device and water fetching method without leakage |
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Application publication date: 20151007 |