CN104406048A - Gas supply structure for liquefied low-pressure shale gas - Google Patents
Gas supply structure for liquefied low-pressure shale gas Download PDFInfo
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- CN104406048A CN104406048A CN201410583331.2A CN201410583331A CN104406048A CN 104406048 A CN104406048 A CN 104406048A CN 201410583331 A CN201410583331 A CN 201410583331A CN 104406048 A CN104406048 A CN 104406048A
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Abstract
The invention discloses a gas supply structure for liquefied low-pressure shale gas. A liquid inlet pipe is arranged on the exterior of a box; the liquid inlet pipe is communicated with the box; a spraying pipe is arranged in the box; the spraying pipe is communicated with the liquid inlet pipe; a liquid level sensor and a temperature sensor are arranged in the box; the temperature sensor is connected with a signal converter; the signal converter is connected with the liquid level sensor; the signal converter is connected with a liquid level display and a temperature display; the liquid inlet pipe is connected with a one-way valve; a liquid outlet pipe is connected with the box; one end of the liquid outlet pipe is communicated with the interior of the box; the liquid outlet pipe is connected with a liquid outlet valve, a one-way check valve, an overflow valve, a gasifier, a pressure-maintaining valve, a pressure-maintaining tank and a solenoid valve in turn; an air release pipe is arranged on the exterior of the box; the air release pipe is communicated with the interior of the box; the air release pipe is connected with an air release valve. The gas supply structure is simple in principle, can be used for effectively treating the shale gas after being liquefied and accurately controlling the gas supply process, and is more safe and convenient during the gas supply process.
Description
Technical field
The present invention relates to a kind of structure, especially relate to a kind of gas-supplying structure of the low pressure shale gas that liquefies.
Background technique
Shale gas composes to be stored in rich organic mud shale and interlayer thereof, and be the Unconventional forage of main existing way to adsorb with free state, composition, based on methane, belongs to a class together with " coal-seam gas ", " tight gas ".The formation of shale gas and enrichment have the feature of self uniqueness, are often distributed in larger, the widespread shale hydrocarbon source rock formation of thickness in basin.Shale gas very early by people cognition, but gather than conventional natural gas difficulty, along with energy resource is day by day deficient, as the useful supplement of conventional natural gas, people recognize the significance of shale gas gradually.Shale gas is present in kerogen, clay particle and pore surface with adsorbed state (about 50%), minute quantity is stored in rock gas in kerogen, asphalitine and oil with dissolved state and is also present in the siltstone of sandwich-like, silty, argillaceous siltstoue, even sandstone formation for after rock gas generates, gathering nearby in source bed shows as typical original place Reservoir model, larger with difference such as petroliferous shale, oil-sand, mineral pitch.Different from conventional reservoir gas reservoir, shale is the source rock that rock gas generates, and is also reservoir and the cap rock of assembling and preserve rock gas.Therefore the black shale that the content of organic matter is high, high-carbon mud stone etc. are often best shale gas developmental conditions.
Shale also belongs to dense rock, therefore also can be included into tight gas reservoir gas.It originates in the Devonian system shale in A Balaqiya basin, is fuscous and black, rich organic, can be angry in a large number.Reservoir space is main with crack and adsorbed gas and Water Soluble Gas form can composes and deposit, and being that low (bear) presses, low saturation (about 30%), is thus low yield.But can obtain high yield at Fractured Zone, the modification measures such as well shooting and pressure break effect might as well.Shale gas exploitation has the advantage that production life of well is long and the manufacture cycle is long---and most of aerogenesis shale has a very wide distribution, thickness large, and general gassiness, make shale gas well can stablize aerogenesis chronically.But shale gas permeability of reservoir is low, exploitation difficulty is larger.Along with constantly riseing of world energy sources consumption, the unconventional energy resource comprising shale gas more and more comes into one's own.The states such as America & Canada have realized shale gas commercial development.In past 10 years, shale gas has become a kind of natural gas resource become more and more important of the U.S., have also been obtained the extensive concern of whole world other countries simultaneously.After shale gas exploitation, for the ease of transport, be generally liquid by its cooling liquid, but bother very much when its follow-up air feed, air feed process is uncontrollable, easily causes Leakage Gas, even causes security incident.
Summary of the invention
When the object of the invention is to overcome above-mentioned existing shale gas post liquefaction air feed, air feed process is uncontrollable, easily cause Leakage Gas, even cause the problem of security incident, devise a kind of gas-supplying structure of the low pressure shale gas that liquefies, this gas-supplying structure principle is easy, effectively can process the shale gas of post liquefaction, can control accurately the process of air feed, make it safer when air feed, convenient, when solving existing shale gas post liquefaction air feed, air feed process is uncontrollable, easily cause Leakage Gas, even cause the problem of security incident.
Object of the present invention is achieved through the following technical solutions: the gas-supplying structure of liquefaction low pressure shale gas, comprise the casing of inner hollow, described casing outer installment has liquid inlet pipe, liquid inlet pipe is communicated with box house, box house is provided with spraying tube, spraying tube is communicated with liquid inlet pipe, liquid level sensor and temperature transducer is provided with in casing, temperature transducer is connected with signal adapter, signal adapter is connected with liquid level sensor, signal adapter is connected with liquid level display and temperature indicator, and liquid level display and temperature indicator are all arranged on casing outside, described liquid inlet pipe is connected with one-way valve, one-way valve is arranged on casing outside, casing is connected with drain pipe, drain pipe one end is communicated with box house, one end that drain pipe is communicated with box house is arranged on the below of liquid inlet pipe, drain pipe is connected with liquid valve in turn, one way stop peturn valve, Restrictor Valves, vaporizer, pressure maintaining valve, surge tank and solenoid valve, liquid valve, one way stop peturn valve, Restrictor Valves, vaporizer, pressure maintaining valve, surge tank and solenoid valve are all arranged on casing outside, and liquid valve is near casing, described casing outer installment has blow-down pipe, blow-down pipe one end is communicated with box house, blow-down pipe is connected with atmospheric valve, one end that blow-down pipe is communicated with box house is arranged on the top of one end that liquid inlet pipe is communicated with casing.
Described vaporizer is connected with cooling water inlet pipe and cooling water outlet pipe, and cooling water outlet pipe is communicated with the top of vaporizer, and cooling water inlet pipe is communicated with the bottom of vaporizer, and cooling water inlet pipe is near Restrictor Valves, and cooling water outlet pipe is near pressure maintaining valve; Described drain pipe is provided with pressure gauge, and pressure gauge is arranged between casing and liquid valve.
In sum, the invention has the beneficial effects as follows: this gas-supplying structure principle is easy, effectively can process the shale gas of post liquefaction, can control accurately the process of air feed, make it safer when air feed, convenient, when solving existing shale gas post liquefaction air feed, air feed process is uncontrollable, easily causes Leakage Gas, even causes the problem of security incident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark and corresponding component title in accompanying drawing: 1-atmospheric valve; 2-pressure gauge; 3-temperature transducer; 4-temperature indicator; 5-filtrating equipment; 6-spraying tube; 7-liquid level sensor; 8-signal adapter; 9-liquid level display; 10-casing; 11-solenoid valve; 12-surge tank; 13-pressure maintaining valve; 14-cooling water outlet pipe; 15-vaporizer; 16-cooling water inlet pipe; 17-Restrictor Valves; 18-one way stop peturn valve; 19-liquid valve; 20-drain pipe; 21-liquid inlet pipe; 22-blow-down pipe.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment 1:
As shown in Figure 1, the gas-supplying structure of liquefaction low pressure shale gas, comprise the casing 10 of inner hollow, described casing 10 outer installment has liquid inlet pipe 21, liquid inlet pipe 21 is communicated with casing 10 inside, casing 10 inside is provided with spraying tube 6, spraying tube 6 is communicated with liquid inlet pipe 21, liquid level sensor 7 and temperature transducer 3 is provided with in casing 10, temperature transducer 3 is connected with signal adapter 8, signal adapter 8 is connected with liquid level sensor 7, signal adapter 8 is connected with liquid level display 9 and temperature indicator 4, and liquid level display 9 and temperature indicator 4 are all arranged on casing 10 outside, described liquid inlet pipe 21 is connected with one-way valve, it is outside that one-way valve is arranged on casing 10, casing 10 is connected with drain pipe 20, drain pipe 20 one end is communicated with casing 10 inside, one end that drain pipe 20 is communicated with casing 10 inside is arranged on the below of liquid inlet pipe 21, drain pipe 20 is connected with liquid valve 19 in turn, one way stop peturn valve 18, Restrictor Valves 17, vaporizer 15, pressure maintaining valve 13, surge tank 12 and solenoid valve 11, liquid valve 19, one way stop peturn valve 18, Restrictor Valves 17, vaporizer 15, pressure maintaining valve 13, it is outside that surge tank 12 and solenoid valve 11 are all arranged on casing 10, and liquid valve 19 is near casing 10, described casing 10 outer installment has blow-down pipe 22, blow-down pipe 22 one end is communicated with casing 10 inside, blow-down pipe 22 is connected with atmospheric valve 1, one end that blow-down pipe 22 is communicated with casing 10 inside is arranged on the top of one end that liquid inlet pipe 21 is communicated with casing 10.Liquid shale gas sprays out by spraying tube 6, by liquid level sensor 7 and temperature transducer 3, its liquid level and temperature are monitored, display device is utilized to provide real-time display to data, filtrating equipment 5 is passed through by contaminant filter during output, make air feed pure, after liquefaction shale gas enters vaporizer 15 by pipe-line system, by boiler cooling water heat air formation gas in advance, through pressure maintaining valve 13, make Pressure Drop to the needs being applicable to air feed; Needed through solenoid valve supply by surge tank again.At the equipment needing to use, the mixed gas of suitable concn under operating mode as various in motivation, can be provided; Shale gas mixes with air; Cold-starting is reliable, idle stable; Gas cylinder internal pressure is all the time than suction pressure more than the height 0.2MPa of engine calls; Circuit design is reasonable, easy to adjust, the pressure maintaining valve outlet setting pressure 0.05 ~ 0.10MPa higher than the suction pressure of engine calls on supply air line; Liquid level and pressure display system sensitive, accurately, antijamming capability is strong.This gas-supplying structure principle is easy, effectively can process the shale gas of post liquefaction, can control accurately the process of air feed, make it safer when air feed, convenient, when solving existing shale gas post liquefaction air feed, air feed process is uncontrollable, easily cause Leakage Gas, even cause the problem of security incident.
Described vaporizer 15 is connected with cooling water inlet pipe 16 and cooling water outlet pipe 14, cooling water outlet pipe 14 is communicated with the top of vaporizer 15, cooling water inlet pipe 16 is communicated with the bottom of vaporizer 15, and cooling water inlet pipe 16 is near Restrictor Valves 17, and cooling water outlet pipe 14 is near pressure maintaining valve 13; Described drain pipe 20 is provided with pressure gauge 2, and pressure gauge 2 is arranged between casing 10 and liquid valve 19.Vaporizer 15 is existing equipment, and vaporizer 15 is that liquid gas heats until the equipment of vaporize (becoming gas) in vaporizer/vaporizer.Vaporizer 15 in the course of the work, very large heat can be absorbed, therefore need to heat it, in line with the principle economized on resources and recycle, the exploitation cooling water of use is in advance adopted to cool, cooling water realizes multidirectional circulating in cooler 15, make vaporizer can rapid heating, the shale gas of liquefaction can be gasified totally, make air feed more safety and meet the requirements, the pressure of the liquefaction shale gas exported in drain pipe 20 is shown by pressure gauge 2, and operator can be controlled the process of air feed.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every according to technology of the present invention, method in fact to any simple modification, equivalent variations that above embodiment does, all fall within protection scope of the present invention.
Claims (2)
1. the gas-supplying structure of liquefaction low pressure shale gas, it is characterized in that: the casing (10) comprising inner hollow, described casing (10) outer installment has liquid inlet pipe (21), liquid inlet pipe (21) is communicated with casing (10) inside, casing (10) inside is provided with spraying tube (6), spraying tube (6) is communicated with liquid inlet pipe (21), liquid level sensor (7) and temperature transducer (3) is provided with in casing (10), temperature transducer (3) is connected with signal adapter (8), signal adapter (8) is connected with liquid level sensor (7), signal adapter (8) is connected with liquid level display (9) and temperature indicator (4), and liquid level display (9) and temperature indicator (4) are all arranged on casing (10) outside, described liquid inlet pipe (21) is connected with one-way valve, it is outside that one-way valve is arranged on casing (10), casing (10) is connected with drain pipe (20), drain pipe (20) one end is communicated with casing (10) inside, one end that drain pipe (20) is communicated with casing (10) inside is arranged on the below of liquid inlet pipe (21), drain pipe (20) is connected with liquid valve (19) in turn, one way stop peturn valve (18), Restrictor Valves (17), vaporizer (15), pressure maintaining valve (13), surge tank (12) and solenoid valve (11), liquid valve (19), one way stop peturn valve (18), Restrictor Valves (17), vaporizer (15), pressure maintaining valve (13), it is outside that surge tank (12) and solenoid valve (11) are all arranged on casing (10), and liquid valve (19) is near casing (10), described casing (10) outer installment has blow-down pipe (22), blow-down pipe (22) one end is communicated with casing (10) inside, blow-down pipe (22) is connected with atmospheric valve (1), one end that blow-down pipe (22) is communicated with casing (10) inside is arranged on the top of one end that liquid inlet pipe (21) is communicated with casing (10).
2. the gas-supplying structure of liquefaction low pressure shale gas according to claim 1, it is characterized in that: described vaporizer (15) is connected with cooling water inlet pipe (16) and cooling water outlet pipe (14), cooling water outlet pipe (14) is communicated with the top of vaporizer (15), cooling water inlet pipe (16) is communicated with the bottom of vaporizer (15), and cooling water inlet pipe (16) is near Restrictor Valves (17), cooling water outlet pipe (14) is near pressure maintaining valve (13); Described drain pipe (20) is provided with pressure gauge (2), pressure gauge (2) is arranged between casing (10) and liquid valve (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410583331.2A CN104406048A (en) | 2014-10-28 | 2014-10-28 | Gas supply structure for liquefied low-pressure shale gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410583331.2A CN104406048A (en) | 2014-10-28 | 2014-10-28 | Gas supply structure for liquefied low-pressure shale gas |
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| CN104406048A true CN104406048A (en) | 2015-03-11 |
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2014
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4259976A (en) * | 1977-10-20 | 1981-04-07 | Chevron Research Company | Method for the recovery and transport of the chemical and energy value of light hydrocarbons |
| CN1763417A (en) * | 2005-10-19 | 2006-04-26 | 马磊 | Liquefied natural gas charging device with automatic pressure regulation and gasification functions |
| JP4946797B2 (en) * | 2007-10-29 | 2012-06-06 | トヨタ自動車株式会社 | Gear shift operation device for synchronous mesh transmission |
| CN202065680U (en) * | 2011-04-14 | 2011-12-07 | 北京中燃伟业燃气有限公司 | Liquefied natural gas (LNG) gasification pressure regulating gas supply device |
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Application publication date: 20150311 |