CN102515343B - Expandable air barrier device and method of using same for injection remediation of underground water pollution - Google Patents
Expandable air barrier device and method of using same for injection remediation of underground water pollution Download PDFInfo
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- CN102515343B CN102515343B CN2011104495550A CN201110449555A CN102515343B CN 102515343 B CN102515343 B CN 102515343B CN 2011104495550 A CN2011104495550 A CN 2011104495550A CN 201110449555 A CN201110449555 A CN 201110449555A CN 102515343 B CN102515343 B CN 102515343B
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses an expandable air barrier device and a method of using the same for injection remediation of underground water pollution. The expandable air barrier device comprises a main air injection pipe, a rubber cylinder assembly made of elastic materials is sleeved to the middle of the main air injection pipe, and a group of rubber cylinder connectors, protection sleeves, middle connectors and connecting sleeves are symmetrically sleeved on the upper portion and the lower portion of the rubber cylinder assembly of the main air injection pipe. The connecting sleeve I is connected between the middle connector I and the upper connector, the upper connector is provided with an upper port used for connecting the main air injection pipe with an external air injection pipe, an inflating port is arranged beside the upper port, the upper end of the inflating port is connected with an external inflating pipe, and the lower end of the inflating port extends downward to be communicated with an air injection cavity. Quick and one-way air injection in an air injection well can be guaranteed by means of the expandable air barrier device and the method, and the requirements of large-scale in-situ remediation of underground water in volatile organic pollutant areas by air injection technique can be met. Further, the expandable air barrier device and the method promote development of the underground water air injection technique and have wide application prospect.
Description
Technical field
The original position that the invention belongs to groundwater pollution is repaired the field, is specifically related to a kind of intumescent gas barrier device and using method thereof that is applied to underground water air sparging technology.
Background technology
Generally adopt in the world at present the underground water volatile organic contaminant in air sparging technology reparation contaminated site.This technology adopts direct injection system, compressed air is injected into the underground water saturation region by the stripping effect, make pollutant increase with compressed air and enter non-saturated region, gaseous contaminant can be processed by the non-saturated region biodegradation, or directly extracts out and carry out subsequent treatment.Its essence is that volatile contaminant is transferred to gas phase from liquid phase, and removed in gas phase.When the application of air injection technique is repaired underground water, need to build the air sparging well, the intumescent gas barrier device is installed in well simultaneously.This device is that the key equipment of whole technology, main purpose are to guarantee that compressed air effectively to underground water saturation region injection, can not produce backflow simultaneously in injector well.
China starts late in contaminated site reparation field, for the reparation of the underground water volatile organic contaminant in contaminated site, at present also not on a large scale on the spot reinstatement works use.Existing corollary equipment for the air sparging utilization, complex structure and can not reusing, price is comparatively expensive, uses operation easier larger, and engineering cost is high.Therefore, when the application of air injection technique is repaired volatility organic contamination underground water, must develop reusable and cheap crucial corollary equipment, the air sparging technology is more widely used.
Summary of the invention
The invention provides a kind of intumescent gas barrier device and be used for the injection restorative procedure of groundwater pollution, the technical problem that solve existing corollary equipment complex structure for the air sparging utilization, can not reuse, cost is high, operation easier is large.
The technical solution adopted for the present invention to solve the technical problems is:
This intumescent gas barrier device for the underground water air sparging comprises main air injection pipe, the packing element assembly of the flexible material of described main air injection pipe middle part cover; Main air injection pipe has one group of packing element joint, protective sleeve, transition joint, adapter sleeve at the symmetrical cover up and down of packing element assembly respectively.
The upper orifice of described packing element assembly is placed in packing element joint I lower outside, the upper orifice outside that protective sleeve I is placed in the packing element assembly simultaneously with packing element joint I outer wall middle part chucking, transition joint I is placed in packing element joint I upper outside, and adapter sleeve I is connected between transition joint I and top connection; Enclose the gas injection cavity between top connection, adapter sleeve I, transition joint I and main air injection pipe outer wall, and both and between main air injection pipe outer wall leave gas passage in transition joint and packing element joint I, gas passage one end is communicated with the gas injection cavity, and the other end is communicated with the space between main air injection pipe and packing element assembly; Top connection is provided be used to the upper interface that main air injection pipe is connected with air injection pipe, and at the other inflatable interface that is provided with of upper interface, and the inflatable interface upper end is connected with gas tube, and the inflatable interface lower end is connected with the gas injection cavity to downward-extension.
The lower nozzle of described packing element assembly is placed in packing element joint II upper outside, the lower nozzle outside that protective sleeve II is placed in the packing element assembly simultaneously with packing element joint II outer wall middle part chucking, transition joint II is placed in packing element joint II lower outside, adapter sleeve II is connected between transition joint II and box cupling, box cupling lower end connection lower contact; Packing element joint II and transition joint II both closely are placed in main air injection pipe outer wall.
Described packing element assembly is quality of rubber materials, and the material of this device remaining part is the 35CrMo structural alloy steel.
The upper interface of described main air injection pipe and top connection all is set for the eccentric, and inflatable interface is positioned at interface away from a side at top connection center.
Described transition joint I with the contact surface of packing element joint I and adapter sleeve I on have groove and be provided with sealing ring, top connection with the contact surface of adapter sleeve I and main air injection pipe outer wall on have groove and be provided with sealing ring.
Described transition joint II with the contact surface of packing element joint II, adapter sleeve II and main air injection pipe outer wall on have groove and be provided with sealing ring, box cupling with the contact surface of adapter sleeve II and main air injection pipe outer wall on have groove and be provided with sealing ring.
The upper orifice inwall of described packing element assembly is provided be used to the inner groovy that holds packing element joint I bottom, and the upper orifice outer wall is provided be used to the outer groove that holds protective sleeve I; The lower nozzle of described packing element assembly is identical with the upper orifice shape.
Described protective sleeve I is suitable for reading is provided with interior edge, and there is flange at packing element joint I outer wall middle part, the flange chucking on the interior edge of protective sleeve I and packing element joint I.
The end opening of described protective sleeve II is provided with interior edge, and there is flange at packing element joint II outer wall middle part, the flange chucking on the interior edge of protective sleeve II and packing element joint II.
Described transition joint I inwall is to be with packing element joint I shaped upper part coordinate each other step-like;
Described transition joint II inwall is to be with packing element joint II shaped upper part coordinate each other step-like.
Described transition joint I outer wall top and top connection outer wall bottom are respectively equipped be used to the groove that holds adapter sleeve I.
Described transition joint II outer wall bottom and box cupling outer wall top are respectively equipped be used to the groove that holds adapter sleeve II.
The using method of this intumescent gas barrier device for the underground water air sparging, use step as follows:
It is 0.6Mpa that the described compressor that is connected with gas tube is set outlet pressure, and during higher than 0.6Mpa, compressor quits work when pressure; When pressure during lower than 0.4Mpa, compressor starts work.
Beneficial effect of the present invention is as follows:
When intumescent gas barrier device of the present invention is transferred to the air sparging well the relevant position, by inflatable interface to injecting compressed air between main air injection pipe outer wall and packing element assembly, the packing element assembly is expanded gradually form airtight annular space, final and the borehole wall is adjacent to, thereby guarantee to realize the obstruct of mine gas and liquid by the unidirectional injection underground reservoir of the compressed air of main air injection pipe.This device has solved a crucial difficult problem of air sparging technology practical engineering application effectively.When whole reinstatement works finishes, can slowly discharge compressed air by the pipeline that is connected with inflatable interface, make the rubber of packing element assembly slowly revert to original state, namely install by deblocking, the device that solution is honored as a queen can utilize the proprietary instrument such as elevator to be recycled to ground.This intumescent gas barrier device is quality of rubber materials except the rubber of packing element assembly, and all the other materials all adopt the 35CrMo structural alloy steel, have higher static strength, impact toughness and fatigue limit.Main air injection pipe and the upper interface eccentric setting in top connection can guarantee that inflatable interface is connected smoothly with the packing element annular seal space.
Of the present invention simple in structure, be convenient to install and use, setting reliable, good airproof performance, the dwell time is long, iris action is obvious, energy consumption is low, can be from withdrawal in injector well, deblocking, taking-up to realize recycling after the device pressure release, use cost is cheap.
The present invention can guarantee to realize quick, unidirectional gas injection in the air sparging well, can satisfy the needs that the underground water of volatile organic matter contaminated site adopted extensive original position air sparging technology reparation.The present invention has promoted the development of underground water air sparging technology, has broad application prospects.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the enlarged drawing on Fig. 1 top.
Fig. 3 is the enlarged drawing of Fig. 1 bottom.
Fig. 4 is the plan structure schematic diagram of Fig. 1.
Fig. 5 is using method schematic diagram of the present invention.
Reference numeral: 1-top connection, 1.1-inflatable interface, 1.2-upper interface, 2-adapter sleeve I, 3-transition joint I, 4-protective sleeve I, 5-packing element joint I, 6-packing element assembly, 7-master's air injection pipe, the 8-box cupling, the 9-lower contact, 10-adapter sleeve II, 11-transition joint II, 12-protective sleeve II, 13-packing element joint II, the 14-sealing ring, 15-gas injection cavity, the 16-gas passage, the 17-gas tube, the 18-air injection pipe, 19-underground water peak level, 20-intumescent gas barrier device, 21-air sparging well, 22-ground, the 23-annular seal space.
The specific embodiment
Embodiment is referring to shown in Fig. 1～3, and this intumescent gas barrier device comprises main air injection pipe 7, the packing element assembly 6 of the described main air injection pipe 7 flexible materials of middle part cover; Main air injection pipe 7 has one group of packing element joint, protective sleeve, transition joint, adapter sleeve at the symmetrical cover up and down of packing element assembly 6 respectively.Described packing element assembly 6 is quality of rubber materials, and the material of this device remaining part is the 35CrMo structural alloy steel.
Shown in Figure 2, the upper orifice of described packing element assembly 6 is placed in packing element joint I5 lower outside, the upper orifice outside that protective sleeve I4 is placed in packing element assembly 6 simultaneously with packing element joint I5 outer wall middle part chucking.Described protective sleeve I4 is suitable for reading is provided with interior edge, and there is flange at packing element joint I5 outer wall middle part, the flange chucking on the interior edge of protective sleeve I4 and packing element joint I5.The upper orifice inwall of described packing element assembly 6 is provided be used to the inner groovy that holds packing element joint I5 bottom, and the upper orifice outer wall is provided be used to the outer groove that holds protective sleeve I4.Transition joint I3 is placed in packing element joint I5 upper outside, and described transition joint I3 inwall is to be with packing element joint I5 shaped upper part coordinate each other step-like.Adapter sleeve I2 is connected between transition joint I3 and top connection 1, and transition joint I3 outer wall top and top connection 1 outer wall bottom is respectively equipped be used to the groove that holds adapter sleeve I2.Enclose gas injection cavity 15 between top connection 1, adapter sleeve I2, transition joint I3 and main air injection pipe 7 outer walls, and both and between main air injection pipe 7 outer walls leave gas passage 16 at transition joint I3 and packing element joint I5, gas passage 16 1 ends are communicated with gas injection cavity 15, and the other end is communicated with the space between main air injection pipe 7 and packing element assembly 6; Top connection 1 is provided be used to the upper interface 1.2 that main air injection pipe 7 is connected with air injection pipe 18, and at the other inflatable interface 1.1 that is provided with of upper interface 1.2, and the inflatable interface upper end is connected with gas tube 17, and inflatable interface 1.1 lower ends are connected with gas injection cavity 15 to downward-extension.
Described transition joint I3 with the contact surface of packing element joint I5 and adapter sleeve I2 on have groove and be provided with sealing ring 14, top connection 1 with the contact surface of adapter sleeve I2 and main air injection pipe 7 outer walls on have groove and be provided with sealing ring 14.
Shown in Figure 3, the lower nozzle of described packing element assembly 6 is placed in packing element joint II13 upper outside, and lower nozzle is identical with the upper orifice shape.The lower nozzle outside that protective sleeve II12 is placed in packing element assembly 6 simultaneously with packing element joint II13 outer wall middle part chucking; the end opening of described protective sleeve II12 is provided with interior edge; there is flange at packing element joint II13 outer wall middle part, the flange chucking on the interior edge of protective sleeve II12 and packing element joint II12.Transition joint II11 is placed in packing element joint II13 lower outside, and transition joint II11 inwall is to be with packing element joint II13 shaped upper part coordinate each other step-like.Adapter sleeve II is connected between transition joint II11 and box cupling 8, and transition joint II11 outer wall bottom and box cupling 8 outer wall tops are respectively equipped be used to the groove that holds adapter sleeve II10.Box cupling 8 lower ends connect lower contact 9; Packing element joint II13 and transition joint II11 both closely are placed in main air injection pipe 7 outer walls.
Described transition joint II11 with the contact surface of packing element joint II13, adapter sleeve II10 and main air injection pipe 7 outer walls on have groove and be provided with sealing ring 14, box cupling 8 with the contact surface of adapter sleeve II10 and main air injection pipe 7 outer walls on have groove and be provided with sealing ring 14.
The maximum outside diameter of this device can be designed to 59mm, overall length 600mm, 150 ℃ of the operating temperature upper limits, maximum working pressure 0.6MPa.The long 275mm of packing element; Main air injection pipe internal diameter is 1 inch; The inflatable interface internal diameter is 1/8 inch, and the inflatable interface outside can be connected with the gas tube that the PU flexible pipe is made.
Shown in Figure 4, the upper interface 1.2 of described main air injection pipe 7 and top connection 1 is eccentric 4mm and arranges, and inflatable interface 1.1 is positioned at interface 1.2 away from a side at top connection center.
Shown in Figure 5, this intumescent gas barrier device is used for the injection restorative procedure of groundwater pollution, uses step as follows:
Claims (8)
1. an intumescent gas barrier device, comprise main air injection pipe (7), it is characterized in that: the packing element assembly (6) of the flexible material of described main air injection pipe (7) middle part cover; Main air injection pipe (7) has one group of packing element joint, protective sleeve, transition joint, adapter sleeve at the symmetrical cover up and down of packing element assembly (6) respectively;
The upper orifice of described packing element assembly (6) is placed in packing element joint I(5) lower outside, protective sleeve I(4) the upper orifice outside that is placed in packing element assembly (6) simultaneously and packing element joint I(5) outer wall middle part chucking, transition joint I(3) be placed in packing element joint I(5) upper outside, adapter sleeve I(2) be connected in transition joint I(3) and top connection (1) between; Top connection (1), adapter sleeve I(2), transition joint I(3) and main air injection pipe (7) outer wall between enclose gas injection cavity (15), and at transition joint I(3) and packing element joint I(5) both and between main air injection pipe (7) outer wall leave gas passage (16), gas passage (16) one ends are communicated with gas injection cavity (15), and the other end is communicated with the space between main air injection pipe (7) and packing element assembly (6); Top connection (1) is provided be used to the upper interface (1.2) that main air injection pipe (7) is connected with air injection pipe (18), and at the other inflatable interface (1.1) that is provided with of upper interface (1.2), the inflatable interface upper end is connected with gas tube (17), and inflatable interface (1.1) lower end is connected with gas injection cavity (15) to downward-extension;
The lower nozzle of described packing element assembly (6) is placed in packing element joint II(13) upper outside, protective sleeve II(12) the lower nozzle outside that is placed in packing element assembly (6) simultaneously and packing element joint II(13) outer wall middle part chucking, transition joint II(11) be placed in packing element joint II(13) lower outside, adapter sleeve II(10) be connected in transition joint II(11) and box cupling (8) between, box cupling (8) lower end connects lower contact (9); Packing element joint II(13) and transition joint II(11) both closely be placed in main air injection pipe (7) outer wall; The upper interface (1.2) of described main air injection pipe (7) and top connection (1) all is set for the eccentric, and inflatable interface (1.1) is positioned at interface (1.2) away from a side at top connection center;
Described protective sleeve I(4) interior edge, the packing element joint I(5 of being provided with suitable for reading) there are flange, protective sleeve I(4 in outer wall middle part) interior edge and packing element joint I(5) on the flange chucking;
Described protective sleeve II(12) end opening is provided with interior edge, packing element joint II(13) there are flange, protective sleeve II(12 in outer wall middle part) interior edge and packing element joint II(12) on the flange chucking.
2. intumescent gas barrier device according to claim 1, it is characterized in that: described packing element assembly (6) is quality of rubber materials, and the material of this device remaining part is the 35CrMo structural alloy steel.
3. intumescent gas barrier device according to claim 1, it is characterized in that: described transition joint I(3) with packing element joint I(5) and adapter sleeve I(2) contact surface on have groove and be provided with sealing ring (14), top connection (1) with adapter sleeve I(2) and the contact surface of main air injection pipe (7) outer wall on have groove and be provided with sealing ring (14);
Described transition joint II(11) with packing element joint II(13), adapter sleeve II(10) and the contact surface of main air injection pipe (7) outer wall on have groove and be provided with sealing ring (14), box cupling (8) with adapter sleeve II(10) and the contact surface of main air injection pipe (7) outer wall on have groove and be provided with sealing ring (14).
4. intumescent gas barrier device according to claim 1, it is characterized in that: the upper orifice inwall of described packing element assembly (6) is provided be used to holding packing element joint I(5) inner groovy of bottom, the upper orifice outer wall is provided be used to holding protective sleeve I(4) outer groove; The lower nozzle of described packing element assembly (6) is identical with the upper orifice shape.
5. intumescent gas barrier device according to claim 1, it is characterized in that: described transition joint I(3) inwall is and packing element joint I(5) shaped upper part is coordinate each other step-like;
Described transition joint II(11) inwall is and packing element joint II(13) shaped upper part is coordinate each other step-like.
6. intumescent gas barrier device according to claim 1 is characterized in that: described transition joint I(3) outer wall top and top connection (1) outer wall bottom are respectively equipped be used to holding adapter sleeve I(2) groove;
Described transition joint II(11) outer wall bottom and box cupling (8) outer wall top are respectively equipped be used to holding adapter sleeve II(10) groove.
7. according to claim 1～6 described intumescent gas barrier devices of any one are used for the injection restorative procedure of groundwater pollution, it is characterized in that using step as follows:
Step 1 adopts direct bore mode to build air sparging well (21), obtains simultaneously underground water peak level (19);
Step 2, higher than underground water peak level 2.5～4.5m place, intumescent gas barrier device (20) is set, main air injection pipe (7) is connected with air injection pipe (18) by upper interface (1.2), simultaneously inflatable interface (1.1) is connected with gas tube (17), two pipelines are elevated above the soil (22), be connected with two compressors respectively;
Step 3, open the compressor that is connected with gas tube (17), enter space between main air injection pipe (7) and packing element assembly (6) through compressed air that inflatable interface (1.1) enters through gas injection cavity (15), gas passage (16), and packing element assembly (6) is expanded gradually form annular seal space (23), final and the borehole wall is adjacent to, and plays the iris action with down-hole liquid;
Step 4 is opened the compressor be connected with air injection pipe (18), and compressed air is delivered to the underground water saturation region by main air injection pipe (7);
Step 5, when whole reinstatement works finishes, first close the compressor that is connected with air injection pipe (18), close again the compressor that is connected with gas tube (17), slowly discharge compressed air, after the rubber of packing element assembly (6) reverts to original state, intumescent gas barrier device (20) is recycled to ground (22).
8. intumescent gas barrier device according to claim 7 is used for the injection restorative procedure of groundwater pollution, it is characterized in that: it is 0.6Mpa that the described compressor that is connected with gas tube (17) is set outlet pressure, during higher than 0.6Mpa, compressor quits work when pressure; When pressure during lower than 0.4Mpa, compressor starts work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104495550A CN102515343B (en) | 2011-12-29 | 2011-12-29 | Expandable air barrier device and method of using same for injection remediation of underground water pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104495550A CN102515343B (en) | 2011-12-29 | 2011-12-29 | Expandable air barrier device and method of using same for injection remediation of underground water pollution |
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| Publication Number | Publication Date |
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| CN102515343A CN102515343A (en) | 2012-06-27 |
| CN102515343B true CN102515343B (en) | 2013-06-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2351544Y (en) * | 1998-11-12 | 1999-12-01 | 新疆生产建设兵团勘测设计院地质勘察分院 | Air bag type drilling water-sealing up packer |
| CN2530026Y (en) * | 2002-01-11 | 2003-01-08 | 大庆油田有限责任公司 | Packer for blocking water |
| CN201915892U (en) * | 2010-07-07 | 2011-08-03 | 上海华群实业股份有限公司 | Expansion packer |
| CN202379797U (en) * | 2011-12-29 | 2012-08-15 | 北京市环境保护科学研究院 | Expansion type gas blocking device applied to underground-water air injection technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4193988B2 (en) * | 2003-12-01 | 2008-12-10 | 鹿島建設株式会社 | Purification method and equipment for contaminated soil |
| US8096350B2 (en) * | 2006-09-21 | 2012-01-17 | The United States Of America As Represented By The Secretary Of The Navy | Dual point adjustable depth air sparging well system |
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2011
- 2011-12-29 CN CN2011104495550A patent/CN102515343B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2351544Y (en) * | 1998-11-12 | 1999-12-01 | 新疆生产建设兵团勘测设计院地质勘察分院 | Air bag type drilling water-sealing up packer |
| CN2530026Y (en) * | 2002-01-11 | 2003-01-08 | 大庆油田有限责任公司 | Packer for blocking water |
| CN201915892U (en) * | 2010-07-07 | 2011-08-03 | 上海华群实业股份有限公司 | Expansion packer |
| CN202379797U (en) * | 2011-12-29 | 2012-08-15 | 北京市环境保护科学研究院 | Expansion type gas blocking device applied to underground-water air injection technology |
Non-Patent Citations (1)
| Title |
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| JP特开2005-161148A 2005.06.23 |
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