CN204099897U - A kind of Natural Gas Spherical displacement apparatus - Google Patents
A kind of Natural Gas Spherical displacement apparatus Download PDFInfo
- Publication number
- CN204099897U CN204099897U CN201420515854.9U CN201420515854U CN204099897U CN 204099897 U CN204099897 U CN 204099897U CN 201420515854 U CN201420515854 U CN 201420515854U CN 204099897 U CN204099897 U CN 204099897U
- Authority
- CN
- China
- Prior art keywords
- natural gas
- gas spherical
- spherical
- displacement apparatus
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a kind of Natural Gas Spherical displacement apparatus, comprise Natural Gas Spherical, suction tude, steam outlet pipe and exhaust stack, suction tude, steam outlet pipe and exhaust stack are all connected with Natural Gas Spherical and are respectively equipped with on-off control valve, the bottom of Natural Gas Spherical is provided with blowdown valve, bottom inlet and the sealed bottom cover plate for opening or close bottom inlet, the top of Natural Gas Spherical is provided with top entry and the top seal cover plate for opening or close top entry, Natural Gas Spherical displacement apparatus also comprises can stretch into Natural Gas Spherical from top entry and to the spray assembly of water spray in Natural Gas Spherical.The utility model have displacement safe and reliable, simple to operate, be easy to control, economical and practical, efficiency advantages of higher.
Description
Technical field
The utility model relates to rock gas supply technical field, is specifically related to a kind of Natural Gas Spherical displacement apparatus.
Background technique
In the enterprise of gas industry, general all need to build several even tens gas storage spherical tanks for peak regulation during gas peak or of short duration deposit of stopping the supple of gas or steam, sub-high pressure rock gas gas storage spherical tank for gas storage and peak-shaving belongs to pressurized container, according to the regulation of " safe technology of pressure vessel Supervision Code " and " pressurized container third pary certification rule ", need regularly to carry out can opening detection, and in spherical tank out of service, be full of rock gas, rock gas belongs to flammable explosive gas, and the spherical tank being filled with rock gas is also in inflammable and explosive state.
Spherical tank needs to replace spherical tank before detecting, and guarantees that testing safety is carried out smoothly.Replacement in spherical tank is a dangerous job, if replacement scenario selects improper or operate miss, all may the accident of blasting cause heavy loss.For this reason, the safety problem of replacement in spherical tank seems particular importance; Secondly, replacement in spherical tank also should consider economic benefit and simple operation, if the improper displacement workload that will cause of scheme is large, costly.
The method that current replacement in spherical tank adopts mainly contains: 1, inert gas replacement; 2, water displacement method.Inert gas replacement utilizes elevated pressures inert gas to be filled with spherical tank, be pressurized to a certain degree, leave standstill a few minutes (fully mixing), then open diffusion valve and discharge mixed gas in spherical tank under the effect of the pressure, get rid of again (diluting effect is played to rock gas), till in spherical tank, concentration of natural gas reaches predetermined displacement standard through being repeatedly filled with of inert gas.
Water displacement method refers to and is filled with spherical tank with water, squeezes the rock gas in tank body by water filling after filling it up with spherical tank.The method ensure that in gas storage spherical tank, rock gas is replaced thoroughly completely, and is perfectly safe, and water is than other inert gas considerably cheaper, is also easy to solve.But it requires that spherical tank basis (pedestal) condition is better, namely displacement weight can be born in spherical tank basis, replaces water waste comparatively greatly, for more than 1000m3 replacement in spherical tank simultaneously, consider spherical tank basic condition (because spherical tank puts into operation for many years) and displacement water consumption factor, generally should not adopt this method.
At present, the replacement ratio of each enterprise gas storage spherical tank is more common, and to be also the method relatively guarded be uses inert gas replacement.Existing inert gas replacement method mostly is liquid nitrogen gasification method of replacing.First need to purchase liquid nitrogen, be transported to Spherical Tank Area by tank car, after vaporizer gasification, be filled with the spherical tank that need replace, rise to certain pressure (about 0.1MPa, specific requirement is not had generally to look field condition fixed) after, stop being filled with nitrogen, open spherical tank top diffusion valve, pressure release is diffused, and then being filled with nitrogen, boosting, pressure release is diffused; Through repeatedly repetitive process (generally needing 5 ~ 6 times), detect methane concentration and be in just stopping displacement work after safety range.There is following shortcoming in the method: 1, displacement cost is higher, need purchase liquid nitrogen, purchases (or renting) vaporizer, fill with metallic hose etc.; 2, operation is more complicated; 3, longer (about 5 ~ 6 hours) consuming time.
Model utility content
The technical problems to be solved in the utility model overcomes the deficiency that prior art exists, provide a kind of safe and reliable, simple to operate, be easy to control, the Natural Gas Spherical displacement apparatus that economical and practical, efficiency is high.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of Natural Gas Spherical displacement apparatus, it is characterized in that: comprise Natural Gas Spherical, suction tude, steam outlet pipe and exhaust stack, described suction tude, steam outlet pipe and exhaust stack are all connected with Natural Gas Spherical and are respectively equipped with on-off control valve, the bottom of described Natural Gas Spherical is provided with blowdown valve, bottom inlet and the sealed bottom cover plate for opening or close bottom inlet, the top of described Natural Gas Spherical is provided with top entry and the top seal cover plate for opening or close top entry, described Natural Gas Spherical displacement apparatus also comprises can stretch into Natural Gas Spherical from top entry and to the spray assembly of water spray in Natural Gas Spherical.
In said apparatus, preferably, described spray assembly comprises waterfog head, pressure pump and connects the connecting tube of waterfog head and pressure pump.
In said apparatus, preferably, described suction tude, steam outlet pipe and exhaust stack are all connected house steward by one and are connected with Natural Gas Spherical, and described connection house steward is connected to the bottom of Natural Gas Spherical.
In said apparatus, preferably, described blowdown valve is located on sealed bottom cover plate.
In said apparatus, preferably, described Natural Gas Spherical is also connected with earth lead.
In said apparatus, preferably, described sealed bottom cover plate and top seal cover plate are removably connected in Natural Gas Spherical by bolt or buckle.
Model utility compared with prior art, the utility model has the advantage of: Natural Gas Spherical displacement apparatus of the present utility model is when carrying out gas replacement, first the pressure in Natural Gas Spherical is progressively depressurized to identical with external pressure by steam outlet pipe with exhaust stack, open top entry again and bottom inlet makes Natural Gas Spherical and external environment condition form cross-ventilation, simultaneously to water spray in Natural Gas Spherical, the concentration of natural gas in Natural Gas Spherical is finally made to reach safety standard, complete gas replacement, pass through to water spray in Natural Gas Spherical in this process, water smoke plays the effect cooled on the one hand, the accumulation of ignition energy can be avoided, water smoke also plays guide functions on the other hand, and the electric charge that gas molecule carries is attached on the inwall of Natural Gas Spherical by fine liquid particles, and by earth lead access the earth, can avoid the possibility of static discharge, in addition, water smoke can also do the wash dust granules in Natural Gas Spherical and other impurity, avoids air-flow to cause dust granules collide and produce spark.The effect of water smoke completely avoid the generation of ignition source, ensures the safety reliability in replacement process.Compared to traditional displacement apparatus and substitute mode, this Natural Gas Spherical displacement apparatus have structure simple, simple to operate, be easy to control, economical and practical, displacement efficiency advantages of higher.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the utility model Natural Gas Spherical displacement apparatus.
Fig. 2 is the fundamental diagram of the utility model Natural Gas Spherical displacement apparatus.
Marginal data:
1, Natural Gas Spherical; 11, bottom inlet; 12, sealed bottom cover plate; 13, top entry; 14, top seal cover plate; 2, suction tude; 3, steam outlet pipe; 4, exhaust stack; 5, on-off control valve; 6, blowdown valve; 7, spray assembly; 71, waterfog head; 72, connecting tube; 8, house steward is connected.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of Natural Gas Spherical displacement apparatus, comprise Natural Gas Spherical 1, suction tude 2, steam outlet pipe 3 and exhaust stack 4, suction tude 2, steam outlet pipe 3 is all connected with Natural Gas Spherical 1 with exhaust stack 4, and suction tude 2, steam outlet pipe 3 and exhaust stack 4 are respectively equipped with on-off control valve 5, suction tude 2, steam outlet pipe 3 and exhaust stack 4 can control break-make by corresponding on-off control valve 5 respectively, the bottom of Natural Gas Spherical 1 is provided with blowdown valve 6, bottom inlet 11 and the sealed bottom cover plate 12 for opening or close bottom inlet 11, the top of Natural Gas Spherical 1 is provided with top entry 13 and the top seal cover plate 14 for opening or close top entry 13, Natural Gas Spherical displacement apparatus also comprises can stretch into Natural Gas Spherical 1 from top entry 13 and to the spray assembly 7 of water spray in Natural Gas Spherical 1.
In the present embodiment, spray assembly 7 comprises waterfog head 71, pressure pump (not shown) and connects the connecting tube 72 of waterfog head 71 and pressure pump, and this waterfog head 71 and pressure pump all can commercially obtain in outsourcing.When needs carry out gas replacement, spray assembly 7 is installed in Natural Gas Spherical 1, makes its waterfog head 71 stretch into Natural Gas Spherical 1 from top entry 13, such as, can directly place in Natural Gas Spherical 1, when not carrying out gas replacement, spray assembly 7 dismounting can be deposited again.
In the present embodiment, suction tude 2, steam outlet pipe 3 and exhaust stack 4 are all connected house steward 8 by one and are connected with Natural Gas Spherical 1, connect the bottom that house steward 8 is connected to Natural Gas Spherical 1, the consumption of pipeline can be saved like this, reduce cost, and only need offer an attachment hole in Natural Gas Spherical 1, greatly can reduce manufacture difficulty.
In the present embodiment, blowdown valve 6 is located on sealed bottom cover plate 12, avoids perforate in Natural Gas Spherical 1, can reduce manufacture difficulty.Natural Gas Spherical 1 is also connected with earth lead (not shown), can discharge electrostatic, avoids the phenomenon of static discharge.Sealed bottom cover plate 12 and top seal cover plate 14 are removably connected in Natural Gas Spherical 1 by bolt or buckle, like this can dismounting sealed bottom cover plate 12 and top seal cover plate 14 easily, thus open or close bottom inlet 11 and top entry 13, certainly in other embodiments, sealed bottom cover plate 12 and top seal cover plate 14 also can adopt other the mode that removably connects.
Adopt above-mentioned Natural Gas Spherical displacement apparatus to carry out the method for gas replacement, comprise the following steps,
1) on-off control valve 5 controlled on steam outlet pipe 3 opens steam outlet pipe 3, by the natural gas transport in Natural Gas Spherical 1 to coupled outside ductwork, until the pressure (being generally 1.5MPa) in Natural Gas Spherical 1 is down to setting value;
2) steam outlet pipe 3 is closed, control the on-off control valve 5 on exhaust stack 4, open exhaust stack 4 pairs of Natural Gas Spherical 1 and diffuse release, until pressure in Natural Gas Spherical 1 identical with external ambient air pressure (be namely 0MPa relative to the pressure of external ambient air pressure), the rock gas be now full of in Natural Gas Spherical 1 is in a safe condition;
3) open top entry 13, the waterfog head 71 of spray assembly 7 is stretched into Natural Gas Spherical 1, the inwall of open water fog spray head 71 pairs of Natural Gas Spherical 1 rinses, and opens blowdown valve 6 simultaneously and the dust granules swept away and impurity is discharged;
4) waterfog head 71 sustained firing water smoke, open bottom inlet 11, because the density of the density ratio air of rock gas is little, rock gas upwards can be spread by top entry 13, draft is upwards produced in Natural Gas Spherical 1, make to form natural cross-ventilation in Natural Gas Spherical 1, continue to complete gas replacement after 3 ~ 4 hours.
Above-mentioned setting value is preferably 0.38MPa.Whether ground connection is good should to monitor the earth lead of Natural Gas Spherical 1 before displacement.
Natural Gas Spherical displacement apparatus of the present utility model is when carrying out gas replacement, first the pressure in Natural Gas Spherical 1 is progressively depressurized to identical with external pressure by steam outlet pipe 3 with exhaust stack 4, opening top entry 13 and bottom inlet 11 again makes Natural Gas Spherical 1 and external environment condition form cross-ventilation, simultaneously to water spray in Natural Gas Spherical 1, the concentration of natural gas in Natural Gas Spherical 1 is finally made to reach safety standard, complete gas replacement, pass through to water spray in Natural Gas Spherical 1 in this process, water smoke plays the effect cooled on the one hand, the accumulation of ignition energy can be avoided, water smoke also plays guide functions on the other hand, and the electric charge that gas molecule carries is attached on the inwall of Natural Gas Spherical 1 by fine liquid particles, and by earth lead access the earth, can avoid the possibility of static discharge, in addition, water smoke can also do the wash dust granules in Natural Gas Spherical 1 and other impurity, avoids air-flow to cause dust granules collide and produce spark.Like this, the effect of water smoke completely avoid the generation of ignition source, ensures the safety reliability in replacement process.Compared to traditional displacement apparatus and substitute mode, this Natural Gas Spherical displacement apparatus have structure simple, simple to operate, be easy to control, economical and practical, efficiency advantages of higher, and through repeatedly facts have proved that the utility model can ensure safety reliability completely when carrying out gas replacement.
When adopting inert gas replacement, liquid nitrogen is 0.808 ton/cubic metre according to density, 1 ton of liquid nitrogen is roughly equal to 1.24 cubic metres, be 800 calculating with rate of gasification, 1 ton of liquid nitrogen can change into 992 cubic metres of nitrogen, and the Natural Gas Spherical 1 of 3500 sides about needs 20000 side's nitrogen, also the liquid nitrogen of about 20.2 tons is namely needed, by liquid nitrogen per ton 1200 yuan calculating, its expense approximately needs 2.424 ten thousand yuan, and this expense does not also comprise the expense such as vaporizer, metallic hose; And when adopting method of replacing of the present utility model to replace, only need about about 10 tons, water, be 3 yuan/ton of calculating by the price of water, water rate is approximately about 30 yuan, adds the electricity charge, and overall cost is no more than 100 yuan, saves about 2.4 ten thousand yuan of costs.It can thus be appreciated that method of replacing of the present utility model is compared with traditional inert gas replacement, and its cost reduces greatly.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment.For those skilled in the art, do not departing from the improvement that obtains under the utility model technical conceive prerequisite and conversion also should be considered as protection domain of the present utility model.
Claims (6)
1. a Natural Gas Spherical displacement apparatus, it is characterized in that: comprise Natural Gas Spherical (1), suction tude (2), steam outlet pipe (3) and exhaust stack (4), described suction tude (2), steam outlet pipe (3) and exhaust stack (4) are all connected with Natural Gas Spherical (1) and are respectively equipped with on-off control valve (5), the bottom of described Natural Gas Spherical (1) is provided with blowdown valve (6), bottom inlet (11) and the sealed bottom cover plate (12) for opening or close bottom inlet (11), the top of described Natural Gas Spherical (1) is provided with top entry (13) and the top seal cover plate (14) for opening or close top entry (13), described Natural Gas Spherical displacement apparatus also comprises can stretch into Natural Gas Spherical (1) from top entry (13) and to the spray assembly (7) of Natural Gas Spherical (1) interior water spray.
2. Natural Gas Spherical displacement apparatus according to claim 1, is characterized in that: described spray assembly (7) comprises waterfog head (71), pressure pump and connects the connecting tube (72) of waterfog head (71) and pressure pump.
3. Natural Gas Spherical displacement apparatus according to claim 1, it is characterized in that: described suction tude (2), steam outlet pipe (3) and exhaust stack (4) are all connected house steward (8) by one and are connected with Natural Gas Spherical (1), described connection house steward (8) is connected to the bottom of Natural Gas Spherical (1).
4. Natural Gas Spherical displacement apparatus according to claim 1, is characterized in that: described blowdown valve (6) is located on sealed bottom cover plate (12).
5. Natural Gas Spherical displacement apparatus according to claim 1, is characterized in that: described Natural Gas Spherical (1) is also connected with earth lead.
6. Natural Gas Spherical displacement apparatus according to claim 1, is characterized in that: described sealed bottom cover plate (12) and top seal cover plate (14) are removably connected in Natural Gas Spherical (1) by bolt or buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515854.9U CN204099897U (en) | 2014-09-10 | 2014-09-10 | A kind of Natural Gas Spherical displacement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515854.9U CN204099897U (en) | 2014-09-10 | 2014-09-10 | A kind of Natural Gas Spherical displacement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099897U true CN204099897U (en) | 2015-01-14 |
Family
ID=52268326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420515854.9U Withdrawn - After Issue CN204099897U (en) | 2014-09-10 | 2014-09-10 | A kind of Natural Gas Spherical displacement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204099897U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214506A (en) * | 2014-09-10 | 2014-12-17 | 株洲新奥燃气有限公司 | Natural gas spherical tank replacement device and replacement method |
| CN104964159A (en) * | 2015-05-29 | 2015-10-07 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Replacement method of ammonia gas in liquid ammonia storage tank |
| CN105179934A (en) * | 2015-09-16 | 2015-12-23 | 神华集团有限责任公司 | Real gas replacement method and device for propylene spherical tanks |
| CN111746724A (en) * | 2020-06-29 | 2020-10-09 | 沪东中华造船(集团)有限公司 | Method for replacing nitrogen and dry air in isolation empty cabin of cargo hold of chemical ship |
| CN112879799A (en) * | 2021-03-10 | 2021-06-01 | 大唐贵州发耳发电有限公司 | Ammonia gas replacement method for overhauling liquid ammonia tank |
| CN113109208A (en) * | 2021-03-03 | 2021-07-13 | 王兴旺 | Concentration detection method for circulating methane tank |
| CN114125215A (en) * | 2021-10-22 | 2022-03-01 | 惠州市云鼎科技有限公司 | Three-proofing camera and sealing processing method thereof |
| CN115264388A (en) * | 2022-07-13 | 2022-11-01 | 北京市燃气集团有限责任公司 | Device and method for continuously replacing natural gas by nitrogen |
-
2014
- 2014-09-10 CN CN201420515854.9U patent/CN204099897U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214506A (en) * | 2014-09-10 | 2014-12-17 | 株洲新奥燃气有限公司 | Natural gas spherical tank replacement device and replacement method |
| CN104964159A (en) * | 2015-05-29 | 2015-10-07 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Replacement method of ammonia gas in liquid ammonia storage tank |
| CN104964159B (en) * | 2015-05-29 | 2018-08-17 | 大唐华银电力股份有限公司金竹山火力发电分公司 | The method of replacing of ammonia in a kind of liquid ammonia storage tank |
| CN105179934A (en) * | 2015-09-16 | 2015-12-23 | 神华集团有限责任公司 | Real gas replacement method and device for propylene spherical tanks |
| CN111746724A (en) * | 2020-06-29 | 2020-10-09 | 沪东中华造船(集团)有限公司 | Method for replacing nitrogen and dry air in isolation empty cabin of cargo hold of chemical ship |
| CN113109208A (en) * | 2021-03-03 | 2021-07-13 | 王兴旺 | Concentration detection method for circulating methane tank |
| CN113109208B (en) * | 2021-03-03 | 2023-09-22 | 王兴旺 | Concentration detection method for circulating methane tank |
| CN112879799A (en) * | 2021-03-10 | 2021-06-01 | 大唐贵州发耳发电有限公司 | Ammonia gas replacement method for overhauling liquid ammonia tank |
| CN114125215A (en) * | 2021-10-22 | 2022-03-01 | 惠州市云鼎科技有限公司 | Three-proofing camera and sealing processing method thereof |
| CN115264388A (en) * | 2022-07-13 | 2022-11-01 | 北京市燃气集团有限责任公司 | Device and method for continuously replacing natural gas by nitrogen |
| CN115264388B (en) * | 2022-07-13 | 2024-01-30 | 北京市燃气集团有限责任公司 | Device and method for continuously replacing natural gas with nitrogen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204099897U (en) | A kind of Natural Gas Spherical displacement apparatus | |
| CN104214506B (en) | A kind of Natural Gas Spherical displacement apparatus and method of replacing thereof | |
| CN201729513U (en) | Pure terephthalic acid (PTA) long-distance conveying device | |
| CN206315390U (en) | One kind ensures that dry powder is sufficiently mixed fluidized Multifunctional dry powder fire extinguisher | |
| CN1318794C (en) | Coal mine gas and fine spray mixed conveying method and apparatus | |
| CN201458752U (en) | Urea hydrolysis system for preparing reducing agent needed by flue gas denitrification | |
| CN201696679U (en) | Safe water seal for conveying combustible gas | |
| CN104372129A (en) | Device and process used for back flushing, deashing and pneumatic ash conveying by utilizing waste flue gas of hot blast heater | |
| CN106287208A (en) | A kind of natural gas scattered gas recoverable ANG of intelligence adsorbs bottle group device | |
| CN2828530Y (en) | Fine spray supplying device for gas of coal mine | |
| CN104984698B (en) | A kind of hydraulic booster adding type secondary foam generating means | |
| CN205411974U (en) | Oil tank cooling water spray set | |
| CN204916746U (en) | Novel lower ash can | |
| CN103623699A (en) | Method for nitrogen displacement in denitration and deamination zones | |
| CN202546248U (en) | Liquefied natural gas box-type filling station | |
| CN202165796U (en) | Rapid nitrogen blowing device of oxygen spherical tank | |
| CN206789311U (en) | Emergence compensating water device after a kind of secondary circuit accident | |
| CN203886470U (en) | Pneumatic stirring device capable of preventing particles from precipitating | |
| CN202954839U (en) | Gas electrical generation system | |
| CN205372076U (en) | Hydrocarbon mixture is spray set for storage tank | |
| CN202849083U (en) | Comprehensive utilization device of CO2 generated during sewage treatment | |
| CN210814458U (en) | Carbon dioxide phase change dust suppression device | |
| CN206499798U (en) | One kind uses sand malleation ejecting extinguishing system | |
| CN206861248U (en) | A kind of LNG skid mounted equipments | |
| CN216838039U (en) | Mud gun machine rotary joint cooling back installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150114 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |