CN202812775U - Large-diameter seamless bottle type underground high-pressure gas storage well - Google Patents
Large-diameter seamless bottle type underground high-pressure gas storage well Download PDFInfo
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- CN202812775U CN202812775U CN 201220460031 CN201220460031U CN202812775U CN 202812775 U CN202812775 U CN 202812775U CN 201220460031 CN201220460031 CN 201220460031 CN 201220460031 U CN201220460031 U CN 201220460031U CN 202812775 U CN202812775 U CN 202812775U
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Abstract
The utility model discloses a large-diameter seamless bottle type underground high-pressure gas storage well, belonging to the technical field of compressed natural gas storage equipment. A large large-diameter seamless gas storage bottle is fixedly buried underground by reinforced concrete so as to be used for storing the compressed natural gas; the gas storage well comprises a soil layer, a well fixing cast tube, a lifting flange, a flange sealing steel ring, a blow-off line device, a discharge pipe, a safety valve, a pressure gauge, an inlet-outlet valve, an inlet-outlet pipe, an upper flange at the mouth of the well, a lower flange at the mouth of the well, a reinforced concrete well fixing layer, the large-diameter seamless gas storage bottle, a bottle bottom plug, an upper bottle bottom sealing flange and a lower bottle bottom sealing flange. The large-diameter seamless bottle type underground high-pressure gas storage well has the advantages that the large large-diameter seamless gas storage bottle is fixedly buried underground by reinforced concrete, thus the gas storage well is convenient to construct, simple in structure, safe and reliable, occupies small area, and has remarkable economic benefits.
Description
Technical field
The utility model belongs to compressed natural gas (CNG) gas storage equipment technology field, and a kind of large-calibre seamless bottle formula well for storage of high pressure gas particularly is provided.The present invention is embedded in underground, simple in structure, safe and reliable, convenient, the remarkable in economical benefits of maintenance with large-calibre seamless air cylinder gas storage unit admittedly with reinforced concrete.
Background technique
At present, generally to adopt CNG ground air cylinder group and CNG well for storage of high pressure gas to come pressure store be the CNG of 25MPa in China CNG gas station (standard station, substation).
CNG air cylinder group is by gas circuit a plurality of CNG air cylinders to be connected into the fixedly caisson of an integral body, and its advantage is that air cylinder is easy to make, and is easy to maintenance.But because the explosive accident of a lot of gas stations air cylinder occured in China in succession in recent years, increased the psychological pressure of people to the gas station construction, in addition large, large with the fire separation of the outer structure in station, the poor stability of CNG ground air cylinder group floor space, in case blast the accident harm scope extensively and be subject to the restriction of the environmental factors such as naked light or electromagnetic interference, do not form yet for many years unified industry standard though be widely used.
It is the non-pressure-bearing seamless steel pipe (weldless tube is made according to standards such as API SPEC 5CT/ISO 11960 or GB/T 19830-2005 " industrial gas oil Oil/gas Well sleeve pipe or oil pipe steel pipe ", enterprise's marks) of 177.8mm～273mm that the CNG well for storage of high pressure gas adopts outer diameter usually, be connected to 80m～250m total length by the knot hoop, with reference to the sealing gas storage of being driven underground of the method for oil drilling, form the gas storage well of 1～10 cube of water capacity.Because the well body of well for storage of high pressure gas adopts unpressurized petroleum casing pipe and lacks direct, reliable detection means, along with the increase of service life, all kinds of potential safety problems expose gradually.It mainly has the following disadvantages:
(1) poor safety performance: well for storage of high pressure gas is fixed together seamless steel pipe by the knot hoop; the be driven underground degree of depth of 80m～250m; outer wall uses cement to be fixed in underground; the perishable inefficacy of well casing; shortage is to protection and the stressed complexity of side knock, and gas storing pipe or the easy fracture of knot hoop cause compressed natural gas to leak; gas storage well is thoroughly scrapped, even the major accident such as gas storage well blast.
(2) the easy upper string of gas storage well body: because cementing quality is bad, some gas storage well in use the phenomenon that well casing is climb at leisure or sunk occurs, even continues again the phenomenon of swashing or sinking after occurring processing once.
(3) downhole hardware leaks and is difficult to maintenance: wellhead assembly leaks valve, the pipe fitting place that occurs in well head end socket and well casing binding screw thread place and the wellhead assembly, and this class leakage phenomenon ratio is easier to find, also is easier to process the general unlikely serious consequence that leads to.The down-hole is leaked and to be occurred in the down-hole, can be full of CNG by gas storage well after, well head pressure gauge can not voltage stabilizing and find, problem is to be difficult to the definite leak position of understanding fully that the down-hole is leaked, also just is difficult to take effective remedial measure.Often have to take to scrap old well in the practice, other builds the practice of new well.
(4) can't effectively implement third pary certification and maintenance: the workmen can only divide well head part and carries out effectively service work, and for the down-hole part, because the well body is darker, internal surface adopts the defect-detecting equipment maintenance of oil well, and the aspects such as its testing precision, reliability all have problems.Like this, there is great potential safety hazard in this structural type.
(5) addressing difficulty, high to the geology structural requirement: with well for storage of high pressure gas as the gas station of gas storage facility before building a station, to carry out detailed investigation and exploration to the subsurface geological structure in this addressing area, station, avoid underground have tomography, solution cavity, coal mine gob, in order to avoid invest excessive, not only increase the cost of pre-verification, also made it that there has been higher requirement in addressing area, increased the difficulty of addressing.
Summary of the invention
The purpose of this utility model is to provide a kind of large-calibre seamless bottle formula well for storage of high pressure gas, has overcome the deficiency of the existing gas storage equipment technology of above-mentioned CNG gas station.For the storage of natural gas filling station CNG provides a kind of safe and reliable, be convenient to install, check low-cost, that floor space is little caisson and gas storage mode.
The utility model is the large-calibre seamless air cylinder to be embedded in admittedly underground with reinforced concrete, is used for the caisson (such as Fig. 1) of store compressed rock gas.Structure of the present utility model mainly comprises: soil layer 1, well cementation cast tube 2, lifting flange 3, flange seal steel ring 4, blowoff line device 5, exhaust stack 6, safety valve 7, pressure gauge 8, intake and exhaust valve 9, air inlet-outlet pipe 10, well up flange 11, well head lower flange 12, reinforced concrete well cementation layer 13, large-calibre seamless air cylinder 14, bottle bottom plug 15, bottle end sealing upper flange 16, bottle end sealing lower flange 17.Adopt large-calibre seamless air cylinder 14 lower ends of surface anticorrosion application by plug 15 sealings of bottle bottom; Bottle end sealing upper flange 16 and bottle end sealing lower flange 17 are bolted, and support large-calibre seamless air cylinder 14, and have the secondary seal effect; Large-calibre seamless air cylinder 14 bottleneck ends are installed hoisting flange 3, main lifting installation effect; Large-calibre seamless air cylinder 14 bottlenecks upper end connects well head lower flange 12 and well up flange 11, and well head lower flange 12 and well up flange 11 are bolted, and flange seal steel ring 4 is housed between the two; Connect intake and exhaust pipeline devices (pressure gauge 8, intake and exhaust valve 9, air inlet-outlet pipe 10), safety valve 7 and blowoff line device 5 on the well up flange 11; The well body adopts well cementation cast tube 2 and the 13 dual well cementation of reinforced concrete well cementation layer, has effectively prevented well body " sinking " and " emitting well ", " altering well " phenomenon; The straight-through bottle drain pipe at the end is equipped with in large-calibre seamless air cylinder 14 inside, can regularly discharge hydrops in the air cylinder (such as water etc.), prevents from corroding the air cylinder wall; If potential safety hazard occurs gas storage well, safety valve 7 is opened, and high-pressure gas is discharged into the high-altitude by exhaust stack 6; Compressed natural gas behind supercharging, the deep dehydration is from the 14 interior storages of intake and exhaust pipeline device input large-calibre seamless air cylinder, and the compressed natural gas in the same large-calibre seamless air cylinder 14 is filled with the CNG automobile by intake and exhaust pipeline device, is its aerating; The raw material of large-calibre seamless air cylinder 14 are to meet the standards such as DOT-3AAX, ASME to be applicable to 25MPa storage pressure diameter be the air cylinder seamless steel pipe of Φ 559mm～Φ 910mm, and the specification of this material is: external diameter * minimum wall thickness (MINI W.) * length=559～910mm * 26.5～33.5mm * 6000～12350mm.
Have the gas storage equipment now with the CNG gas station and compare, the utility model mainly contains following technical advantage:
(1) the high-pressure gas unit adopts monolithic construction, simple in structure, safe and reliable: as to compare with well for storage of high pressure gas, high-pressure gas of the present utility model unit adopts the integrated type air cylinder to replace the connection technique of coupling of petroleum casing pipe complexity, simple in structure, constructability not only, and what is more important adopts well cementation cast tube and the dual cementing technology of reinforced concrete, cementing quality is high, eliminated the well casing that gas storage well in use occurs and swashed or sinkage, safety and reliability significantly improves.The large-calibre seamless air cylinder is fully according to standard design such as DOT-3AAX, ASME, design code, safe and reliable.
(2) installation is simple, the addressing of building a station is easy, not high to the geology structural requirement, the overall investment cost is low: of the present invention owing to adopt the large-calibre seamless air cylinder, in the installation process, only need drilling depth about 8m, just can satisfy larger gas storage volume, go for any geological condition, and fire separation requires and floor space is less, good economy performance.
(3) maintenance is convenient, reliable, easy to maintenance, and antiseptic effect is desirable: the present invention adopts the large-calibre seamless air cylinder, and the well body degree of depth is more shallow, adopts existing high pressure air gas storage well detection technique just can satisfy higher required precision; In installation process, anti-corrosion measure is comparatively convenient, and the air cylinder outer wall adopts advanced anti-corrosion material, the antiseptic effect of just realizing ideal.
(4) be affected by the external environment and disturb little, increased safety coefficient in use: the present invention is embedded in the large-calibre seamless air cylinder in the constant underground environment admittedly, external environment is less on its impact, the interference such as can be effectively antistatic, anti lightning, uvioresistant and electromagnetic radiation, all the time be in the stable working environment, operational efficiency and safety coefficient are higher.
Description of drawings
Fig. 1 is the structural representation of large-calibre seamless bottle formula well for storage.Wherein, soil layer 1, well cementation cast tube 2, lifting flange 3, flange seal steel ring 4, blowoff line device 5, exhaust stack 6, safety valve 7, pressure gauge 8, intake and exhaust valve 9, air inlet-outlet pipe 10, well up flange 11, well head lower flange 12, reinforced concrete well cementation layer 13, large-calibre seamless air cylinder 14, bottle bottom plug 15, bottle end sealing upper flange 16, bottle end sealing lower flange 17.
Embodiment
The utility model is the large-calibre seamless air cylinder to be embedded in admittedly underground with reinforced concrete, is used for the caisson (such as Fig. 1) of store compressed rock gas.Structure of the present invention mainly comprises: soil layer 1, well cementation cast tube 2, lifting flange 3, flange seal steel ring 4, blowoff line device 5, exhaust stack 6, safety valve 7, pressure gauge 8, intake and exhaust valve 9, air inlet-outlet pipe 10, well up flange 11, well head lower flange 12, reinforced concrete well cementation layer 13, large-calibre seamless air cylinder 14, bottle bottom plug 15, bottle end sealing upper flange 16, bottle end sealing lower flange 17.Adopt large-calibre seamless air cylinder 14 lower ends of surface anticorrosion application by plug 15 sealings of bottle bottom; Bottle end sealing upper flange 16 and bottle end sealing lower flange 17 are bolted, and support large-calibre seamless air cylinder 14, and have the secondary seal effect; Large-calibre seamless air cylinder 14 bottleneck ends are installed hoisting flange 3, main lifting installation effect; Large-calibre seamless air cylinder 14 bottlenecks upper end connects well head lower flange 12 and well up flange 11, and well head lower flange 12 and well up flange 11 are bolted, and flange seal steel ring 4 is housed between the two; Connect intake and exhaust pipeline devices (pressure gauge 8, intake and exhaust valve 9, air inlet-outlet pipe 10), safety valve 7 and blowoff line device 5 on the well up flange 11; The well body adopts well cementation cast tube 2 and the 13 dual well cementation of reinforced concrete well cementation layer, has effectively prevented well body " sinking " and " emitting well ", " altering well " phenomenon; The straight-through bottle drain pipe at the end is equipped with in large-calibre seamless air cylinder 14 inside, can regularly discharge hydrops in the air cylinder (such as water etc.), prevents from corroding the air cylinder wall; If potential safety hazard occurs gas storage well, safety valve 7 is opened, and high-pressure gas is discharged into the high-altitude by exhaust stack 6; Compressed natural gas behind supercharging, the deep dehydration is from the 14 interior storages of intake and exhaust pipeline device input large-calibre seamless air cylinder, and the compressed natural gas in the same large-calibre seamless air cylinder 14 is filled with the CNG automobile by intake and exhaust pipeline device, is its aerating; The raw material of large-calibre seamless air cylinder 14 are to meet the standards such as DOT-3AAX, ASME to be applicable to 25MPa storage pressure diameter be the air cylinder seamless steel pipe of Φ 559mm～Φ 910mm, and the specification of this material is: external diameter * minimum wall thickness (MINI W.) * length=559～910mm * 26.5～33.5mm * 6000～12350mm.
The novel caisson that the utility model provides can be widely used in the compression rock gas accumulating fields such as natural gas door station, CNG standard gas station, natural gas mother station and natural gas supply sub-station in city.
The above is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a large-calibre seamless bottle formula well for storage of high pressure gas is characterized in that: soil layer, well cementation cast tube, lifting flange, flange seal steel ring, blowoff line device, exhaust stack, safety valve, pressure gauge, intake and exhaust valve, air inlet-outlet pipe, well up flange, well head lower flange, reinforced concrete well cementation layer, large-calibre seamless air cylinder, bottle bottom plug, bottle end sealing upper flange, bottle end sealing lower flange; Large-calibre seamless air cylinder (14) lower end is by bottle bottom plug (15) sealing; Bottle end sealing upper flange (16) and bottle end sealing lower flange (17) are bolted; Large-calibre seamless air cylinder (14) bottleneck end is installed hoisting flange (3), large-calibre seamless air cylinder (14) bottleneck upper end connects well head lower flange (12) and well up flange (11), well head lower flange (12) and well up flange (11) are bolted, and flange seal steel ring (4) is housed between the two; Upper intake and exhaust pipeline device, safety valve (7) and the blowoff line device (5) of connecting of well up flange (11); The well body adopts well cementation cast tube (2) and (13) the dual well cementation of reinforced concrete well cementation layer, and the straight-through bottle drain pipe at the end is equipped with in large-calibre seamless air cylinder (14) inside.
2. require described well for storage according to right 1, it is characterized in that: the raw material of described large-calibre seamless air cylinder (14) are to meet DOT-3AAX, ASME standard to be applicable to 25MPa storage pressure diameter be the air cylinder seamless steel pipe of Φ 559mm～Φ 910mm, and the specification of this material is: external diameter * minimum wall thickness (MINI W.) * length=559～910mm * 26.5～33.5mm * 6000～12350mm.
3. require described well for storage according to right 1, it is characterized in that: described intake and exhaust pipeline device is comprised of pressure gauge (8), intake and exhaust valve (9), air inlet-outlet pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220460031 CN202812775U (en) | 2012-09-10 | 2012-09-10 | Large-diameter seamless bottle type underground high-pressure gas storage well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220460031 CN202812775U (en) | 2012-09-10 | 2012-09-10 | Large-diameter seamless bottle type underground high-pressure gas storage well |
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| CN202812775U true CN202812775U (en) | 2013-03-20 |
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| CN 201220460031 Expired - Fee Related CN202812775U (en) | 2012-09-10 | 2012-09-10 | Large-diameter seamless bottle type underground high-pressure gas storage well |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557431A (en) * | 2013-11-19 | 2014-02-05 | 四川川油天然气科技发展有限公司 | Single shaft type gas storage well |
| CN108224069A (en) * | 2018-03-02 | 2018-06-29 | 陆奇 | Large Underground combustion gas caisson |
| WO2019080219A1 (en) * | 2017-10-25 | 2019-05-02 | 中国矿业大学 | Method for using coal mine underground tunnel for compressed air energy storage |
| CN114636092A (en) * | 2022-05-17 | 2022-06-17 | 浙江大学 | Non-metal lining gas storage well for storing natural gas or hydrogen-doped natural gas and installation method |
-
2012
- 2012-09-10 CN CN 201220460031 patent/CN202812775U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557431A (en) * | 2013-11-19 | 2014-02-05 | 四川川油天然气科技发展有限公司 | Single shaft type gas storage well |
| WO2019080219A1 (en) * | 2017-10-25 | 2019-05-02 | 中国矿业大学 | Method for using coal mine underground tunnel for compressed air energy storage |
| CN108224069A (en) * | 2018-03-02 | 2018-06-29 | 陆奇 | Large Underground combustion gas caisson |
| CN114636092A (en) * | 2022-05-17 | 2022-06-17 | 浙江大学 | Non-metal lining gas storage well for storing natural gas or hydrogen-doped natural gas and installation method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160224 Address after: Congtai District 056002 in Hebei province Handan city in North China Street No. 702 building second unit 1 building 11 the floor of No. 1102 Patentee after: Handan Xinze Gas Technology Co Ltd Address before: 100070 No. 188 West Fourth Ring Road, Beijing, Fengtai District Patentee before: Shengze Energy Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180910 |