CN105155619A - Anti-freezing method and device of water wells in perennial frozen soil - Google Patents
Anti-freezing method and device of water wells in perennial frozen soil Download PDFInfo
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- CN105155619A CN105155619A CN201510402024.4A CN201510402024A CN105155619A CN 105155619 A CN105155619 A CN 105155619A CN 201510402024 A CN201510402024 A CN 201510402024A CN 105155619 A CN105155619 A CN 105155619A
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Abstract
The invention discloses an anti-freezing method and device of water wells in perennial frozen soil. The anti-freezing method includes the step that while a water pump stops running, water level in a water well is decreased to be below the perennial frozen soil by pressure of high-pressure gas. The anti-freezing device comprises a high-pressure gas source (1). The high-pressure gas source (1) is connected with a water pump outflow pipe (5) through a gas supply pipe; the gas supply pipe is provided with a gas supply valve (2). The anti-freezing device further comprises an exhaust valve (3). An inlet of the exhaust valve (3) is communicated with a well-wall pipe (6) through an exhaust pipe. An outlet of the exhaust valve (3) is communicated with atmosphere. The anti-freezing device further comprises a water supply valve (4) arranged behind a gas supply pipe connection on the water pump outflow pipe (5). The anti-freezing method and device is capable of simply and effectively preventing the water wells in the perennial frozen soil from being frozen.
Description
Technical field
The invention belongs to water fetching device freezing proof technique field, particularly a kind of easy construction, cost is low, system is simple, operating cost is low, and environmental suitability is strong, convenient management, the well defroster that good freezing protection effect, reliability are 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 and pumping line bulk freezing, water pump 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: the pipe well be in permafrost lacks simple and effective antifreezing measures.
Summary of the invention
The object of the present invention is to provide a kind of permafrost well means to prevent freezing, simple, effective.
Another object of the present invention is to provide a kind of simple, effective permafrost well defroster.
The technical solution realizing the object of the invention is: a kind of permafrost well means to prevent freezing, quits work period, utilize gases at high pressure, the water level in well is depressed into below permafrost at water pump.
The technical solution realizing another object of the present invention is: a kind of permafrost well defroster, comprise high-pressure air source, described high-pressure air source is connected with pumping line by air supply pipe, described air supply pipe is provided with steam supply valve, also comprise vent valve, the import of described vent valve is communicated by the wall casing that bleeder pipe and upper end are airtight, and the outlet of vent valve communicates with air, also comprise feed water valve, described feed water valve to be placed on pumping line after air supply pipe tie point.
The present invention compared with existing electric tracing technology, 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 pumping line of device of the present invention and well head and wall casing, without the need to changing structure and the drilling technology of pipe well, are directly connected by the present invention.
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.Defroster capital equipment of the present invention is 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 principle of defroster of the present invention is isolation, is about to the pipeline section that may freeze and submersible pump, quits work period, drained by water wherein, because ever-frozen ground interval is without water, so can not freeze with compressed air at water pump.
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 pumping for water pump in well.
Fig. 2 is that after in well, water pump quits work, well middle water level is depressed into the state of below permafrost at compressed air.
In figure, 1 band gasholder air compressor machine, 2 air hose control valves, 3 vent valves, 4 feed pipe control valves, 5 pumping lines, 6 wall casings, 7 deep well submerged pumps, 8 active layers, 9 permafrost, 10 aquifers, 11 impervious layers, waterline in 12 wells.
Detailed description of the invention
Permafrost well means to prevent freezing of the present invention, is: quit work period at water pump, utilize gases at high pressure, the water level in well is depressed into below permafrost.
For convenience of practical, described gases at high pressure are compressed air.
Said method can realize like this: for an air compressor machine joined by well, the air supply pipe of air compressor machine is communicated with the wall casing of well, pumping line.When water pump quits work, by supplying water and the switching of air-supplying valve, compressed air is pressed in well.The supply gas pressure of air compressor machine meets the demand hydrostatic level of well being depressed into below permafrost, thus prevents from being positioned at the wall casing of permafrost region, deep well submerged pump and pumping line entirety and freeze.
When needs are from well water pumping, then pass through the switching of water supply, air-supplying valve, Compressed Gas in well is drained.Under the effect of artesian aquifer hydraulic pressure, the water level in well gets back to ordinary water level, restarts pumping for water pump.
As shown in Figure 1, 2, permafrost well defroster of the present invention, comprise high-pressure air source 1, described high-pressure air source 1 is connected with pumping line 5 by air supply pipe, and described air supply pipe is provided with steam supply valve 2, also comprises vent valve 3, the import of described vent valve 3 is communicated by the wall casing 6 that bleeder pipe and upper end are airtight, the outlet of vent valve 3 communicates with air, also comprises feed water valve 4, and described feed water valve 4 to be placed on pumping line 5 after air supply pipe tie point.
Described high-pressure air source 1 is air presses 1.
Described air presses 1 is provided with gasholder.
Its course of work is as follows:
When preparing from well water pumping, closing air hose control valve 2, opening vent valve 3.Close after discharging without air in vent valve 3.Open feed pipe control 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.
When stopping pumping, after closing deep well submerged pump 7, closing feed pipe control valve 4, opening air hose control 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.In well, water position status as shown in Figure 2.
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 water pump, 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 (5)
1. a permafrost well means to prevent freezing, is characterized in that: quit work period at water pump, utilize gases at high pressure, the water level in well is depressed into below permafrost.
2. means to prevent freezing according to claim 1, is characterized in that: described gases at high pressure are compressed air.
3. a permafrost well defroster, it is characterized in that: comprise high-pressure air source (1), described high-pressure air source (1) is connected with pumping line (5) by air supply pipe, described air supply pipe is provided with steam supply valve (2), also comprise vent valve (3), the import of described vent valve (3) is communicated by the wall casing (6) that bleeder pipe and upper end are airtight, the outlet of vent valve (3) communicates with air, also comprise feed water valve (4), after described feed water valve (4) is placed in the upper air supply pipe tie point of pumping line (5).
4. defroster according to claim 3, is characterized in that: described high-pressure air source (1) is air presses (1).
5. defroster according to claim 4, is characterized in that: described air presses (1) is provided with gasholder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510402024.4A CN105155619A (en) | 2015-07-09 | 2015-07-09 | Anti-freezing method and device of water wells in perennial frozen soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510402024.4A CN105155619A (en) | 2015-07-09 | 2015-07-09 | Anti-freezing method and device of water wells in perennial frozen soil |
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| CN105155619A true CN105155619A (en) | 2015-12-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149751A (en) * | 2018-02-11 | 2018-06-12 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of depth frozen soil extremely cold area pipe well defroster |
| 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 |
| CN110906170A (en) * | 2018-09-16 | 2020-03-24 | 管凤强 | Liquid discharge pipeline anti-freezing method and anti-freezing device thereof |
| CN111894081A (en) * | 2020-07-30 | 2020-11-06 | 中国人民解放军31666部队 | High-cold area well water anti-freezing device utilizing high-pressure gas interference |
| CN112049187A (en) * | 2020-09-14 | 2020-12-08 | 中国人民解放军31666部队 | High-cold area well water anti-freezing device utilizing high-pressure gas interference |
-
2015
- 2015-07-09 CN CN201510402024.4A patent/CN105155619A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149751A (en) * | 2018-02-11 | 2018-06-12 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of depth frozen soil extremely cold area pipe well defroster |
| 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 |
| CN110906170A (en) * | 2018-09-16 | 2020-03-24 | 管凤强 | Liquid discharge pipeline anti-freezing method and anti-freezing device thereof |
| CN111894081A (en) * | 2020-07-30 | 2020-11-06 | 中国人民解放军31666部队 | High-cold area well water anti-freezing device utilizing high-pressure gas interference |
| CN112049187A (en) * | 2020-09-14 | 2020-12-08 | 中国人民解放军31666部队 | High-cold area well water anti-freezing device utilizing high-pressure gas interference |
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Application publication date: 20151216 |