CN103217318B - The vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling - Google Patents
The vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling Download PDFInfo
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- CN103217318B CN103217318B CN201310149566.6A CN201310149566A CN103217318B CN 103217318 B CN103217318 B CN 103217318B CN 201310149566 A CN201310149566 A CN 201310149566A CN 103217318 B CN103217318 B CN 103217318B
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Abstract
The invention provides the vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling, comprise vacuum unit (A), air collector (B) and pumping cells (C), wherein said vacuum unit (A) comprises manufacture glass tube with vacuum (16) and vacuum pump (19), described air collector (B) comprises tank body (1) that is detachable and that be tightly connected and Cap for tin body (4), (4) are formed with main aperture and secondary orifices to described Cap for tin body, described secondary orifices is provided with secondary orifices pipe (5), the main aperture of described Cap for tin body is arranged described pumping cells (C), and described main aperture is communicated with the aspirating chamber of described pumping cells (C).Vacuum air-taking system of the present invention utilizes the gas collection aspirating chamber of the negative pressure of vacuum in air collector and ad hoc structure to extract core sample release gas, improves gas collecting efficiency; Utilize multi-sealing structure to eliminate air impact, ensure that and gather gaseous sample quality; Utilize constant temperature water box degassed, eliminate the impact of variation of ambient temperature, improve the comparability of rock core collection capacity.
Description
Technical field
The present invention relates to gas extraction field, relate to the vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling more specifically.
Background technology
Gas hydrate are a kind of high density (1m
3164m can be discharged
3methane) clean energy resource, be 2 times of the conventional energy resources resource summations such as global coal, oil, rock gas, caused showing great attention to of global many countries.In drilling process, the size of rock core release gas flow is that scene judges one of key parameter whether hydrate exists fast.Therefore, hydrate situ of drilling well rock core gas extraction equipment is the important foundation equipment of drill site gas collecting, measurement and then quick recognition hydrate.
Through literature search, domestic and international gas hydrate drill cores gas collecting extracting method, mainly contains static headspace gas method and standing degassing method at present.The former is mainly used in gathering the gas in rock core (or landwaste), and latter is for gathering the gas of hydrate rock core, and concrete grammar is as follows:
1, static headspace gas method, concrete operations are: the core sample that 5cm is long is weighed and loaded and is furnished with in the metal can of dottle pin, add water and make to be full of water between metal can and sample, certain locus (100ml) is left on top, the germifuge (sodiumazide) of 2.3g is added in water, then sample and water-stop are got up, be inverted refrigeration and transport, after delivering to laboratory, the sample temperature of refrigeration is returned to 20 DEG C, carry out the high speed machine vibration of 5 minutes again, then get a certain amount of vessel head space gas (15ml) and carry out hydrocarbon composition and isotope analysis.The method adopts normal temperature mechanical oscillation mode to discharge gas, and advantage is: field operation is simple, quick; Shortcoming is: (1), along with the decomposition of hydrate and air release, the increasing pressure in metal can is large, inhibits the decomposition of hydrate, causes air release incomplete; (2) decompose the air that the hydrocarbon gas discharged has been mixed into metal can headspace, cause a series of analytical error.
2, drainage is left standstill, concrete operations are: select content higher and macroscopic hydrate core sample, be immersed under water, the gas of decomposition of hydrate release, in the glass container gas collection discharged sealed to available bottle stopper by displacement water law, or be temporarily collected in the plastic injector of 60ml, then import in special vial and seal up for safekeeping.The method leaves standstill release under adopting normal temperature naturally, and gas is got in draining, and advantage is that field operation is simple, eliminates the impact of air; Shortcoming is: it is slower that (1) leaves standstill Spontaneous release speed; (2) sample decomposition release is influenced by environmental temperature, and make decomposition of hydrate degree varies, air release amount error is larger.
In sum, the above two kinds of methods existed in prior art all have the simple advantage of field operation, but also all have that decomposition rate is slow, efficiency is low, incomplete, and the easy shortcoming such as influenced by ambient temperature, but also the impact that air is mixed into pollution may be subject to.
Summary of the invention
The object of the invention is to overcome in above-mentioned prior art and get the shortcoming that gas is insufficient, gas componant that is that take out is subject to air or ambient temperature effect, there is provided a set of vacuum collector gathered for hydrocarbon gas in the on-the-spot rock core of Gas Hydrate Drilling, with the accuracy of the efficiency and test result that improve hydrate core sample gas collecting.
The concrete technical scheme of the present invention is as follows:
The vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling, comprise: vacuum unit A, air collector B and pumping cells C, wherein said vacuum unit A comprises manufacture glass tube with vacuum 16 and vacuum pump 19, described manufacture glass tube with vacuum 16 is connected with vacuum pump 19 by pipeline, described air collector B comprises tank body 1 that is detachable and that be tightly connected and Cap for tin body 4, described Cap for tin body 4 is formed with main aperture and secondary orifices, described secondary orifices is provided with secondary orifices pipe 5, described secondary orifices pipe 5 connects described manufacture glass tube with vacuum 16 by pipeline, the main aperture of described Cap for tin body is arranged described pumping cells C, and described main aperture is communicated with the aspirating chamber of described pumping cells C.
Further according to vacuum air-taking system of the present invention, wherein said manufacture glass tube with vacuum 16 comprises a straight pipe and side siphunculus, described straight pipe is connected with the secondary orifices pipe 5 on air collector B Cap for tin body 4 by pipeline, and described side siphunculus is connected with vacuum pump 19 by pipeline.
Further according to vacuum air-taking system of the present invention, wherein said pipeline is rubber connecting hose 22,23, described straight pipe is equipped with straight pipe valve 17 for controlling the opening and closing of straight pipe, described side siphunculus is equipped with side siphunculus valve 18 for controlling the opening and closing of side siphunculus, described vacuum pump 19 is provided with gauge tap 20 and air pressure gauging table 21.
Further according to vacuum air-taking system of the present invention, the core structure that wherein said tank body 1 is one end open, one end is closed, openend is used for putting into core sample, and openend outer wall is provided with external thread, and the first O-ring seal 2 is equipped with at the unit with grooves in outer wall place of threaded lower end outside; The complete opening in one end of described Cap for tin body 4, the other end are provided with described secondary orifices and main aperture, the openend inwall of described Cap for tin body 4 be provided with can with the close-connected internal thread of external thread of tank body 1 openend outer wall, and to be formed with tank body 1 by the first O-ring seal 2 at connection maximum and seal.
Further according to vacuum air-taking system of the present invention, round table-like inner-cavity structure is formed above the internal thread of wherein said Cap for tin body 4 openend, the top of round table-like inner chamber is as described main aperture, a transition platform is formed between described internal thread top and round table-like intracavity bottom, described transition platform is provided with the second O-ring seal 3, when Cap for tin body 4 and tank body 1 tighten be connected time, the ora terminalis of described tank body 1 openend is low to be connect described second O-ring seal 3 and is formed with Cap for tin body 4 and seal.
Further according to vacuum air-taking system of the present invention, secondary orifices on wherein said Cap for tin body 4 is located at the side of main aperture, described secondary orifices pipe 5 runs through inside and outside described Cap for tin body 4 through described secondary orifices, and secondary orifices pipe 5 outside Cap for tin body is provided with valve switch 6, the length of the secondary orifices pipe 5 inside Cap for tin body is greater than the height of Cap for tin body 4, to ensure that the mouth of pipe getting secondary orifices pipe 5 in gas process extend into below the liquid level in air collector all the time.
Further according to vacuum air-taking system of the present invention, wherein said pumping cells C comprises platform 7 of bleeding, band aspirating hole screw rod 8, to bleed pin and seal gasket 9, the described platform 7 of bleeding is stacked cylindrical and be arranged at directly over described main aperture in two, described lower cylindrical inside is formed with the aspirating chamber of spherical crown shape, bottom and the described main aperture of described aspirating chamber seamlessly transit UNICOM, described upper cylindrical inside is formed with interior cylindrical cavity, the top of described aspirating chamber is communicated with described interior cylindrical cavity, described seal gasket 9 to be positioned at the bottom of the described interior cylindrical cavity chamber of cylinder and to bending down the described aspirating chamber outlet being connected to lower cylinder, described seal gasket 9 is connected in the interior cylindrical cavity that described band aspirating hole screw rod 8 is arranged at described upper cylinder to bending down.
Further according to vacuum air-taking system of the present invention, wherein said band aspirating hole screw rod 8 profile is lower cylindrical, top round pie, center is provided with the through aspirating hole in two ends 11, lower cylindrical outer wall is with external thread, internal thread is formed in the interior cylindrical cavity of the upper cylinder of described platform of bleeding, described band aspirating hole screw rod 8 top cake end face is provided with in-line groove 10, for band aspirating hole screw rod 8 is screwed in the upper cylinder of described platform of bleeding with thread connecting mode, and make top, band aspirating hole screw rod 8 lower end be pressed on described seal gasket 9, the aspirating hole 11 puncture through seal rubber cushion 9 of described pin band aspirating hole screw rod 8 of bleeding and enter aspirating chamber.
Further according to vacuum air-taking system of the present invention, the platform 7 of bleeding of wherein said pumping cells C is integrally formed with the Cap for tin body 4 of described air collector B, and the material of described air collector is stainless steel, and described O-ring seal 2,3 is rubber seal.
Further according to vacuum air-taking system of the present invention, wherein also include constant temperature water box 12 for providing degassed environment for air collector, described constant temperature water box 12 comprises: temperature control panel 13, tank 14 and tank body draw-in groove 15, described tank body draw-in groove 15 is arranged in described tank 14, for fixed set gas tank, described temperature control panel 13 is arranged at sink outer walls.
Further according to vacuum air-taking system of the present invention, also comprise the plastic cistern 24 of bleeding for exhaust and pin of bleeding in air collector.
The technical method utilizing system of the present invention to carry out the extraction of rock core gas vacuum is:
1) utilize and operate under water, respectively the air saturated brine be equipped with in the tank body 1 of rock core and Cap for tin body 4 is discharged, then by the internal and external threads that respectively carries and O-ring seal, tank body 1 is connected sealing with Cap for tin body 4, form the air collector of sealing;
2) connect vacuum pump 19 by rubber connecting hose 22 and manufacture glass tube with vacuum 16, and closing and open valve 17, valve 18 respectively, utilizing vacuum pump to manufacture vacuum, valve-off 18 then in manufacture glass tube with vacuum 16;
3) the manufacture straight pipe of glass tube with vacuum 16 is connected with the secondary orifices pipe 5 on air collector by the rubber connecting hose 23 by discharging air, then the valve switch 6 on Cap for tin body secondary orifices pipe and valve 17 is successively opened, saturated brine in air collector is entered and manufactures in glass tube with vacuum 16, when saturated brine no longer enters glass tube with vacuum 16, valve-off switch 6, produces vacuum in air collector and keeps negative pressure;
4) utilize constant temperature water box to heat air collector, promote rock core fast and stable release gas in tank.The particular design of aspirating chamber inner chamber on Cap for tin body, makes the spherical crown shape aspirating chamber of gas collection to aspirating hole 11 below of the release of rock core in air collector, and sample introduction needle of guaranteeing to bleed can extract the gas that rock core discharges to greatest extent.
At least following technique effect can be reached by the vacuum air-taking system of the on-the-spot rock core gas of Gas Hydrate Drilling of the present invention:
1), the negative pressure of vacuum utilized in air collector, not only accelerate the air release speed of Gas Hydrate Drilling rock core, improve gas collecting efficiency; And eliminate the impact that air is mixed into, ensure that the quality gathering gaseous sample;
2), the particular design of Cap for tin body inner chamber, ensure that in the spherical crown shape aspirating chamber of the tank body caping of gas collection immediately below aspirating hole that hydrate probe boring rock core discharges, this is not only beneficial to the effective extracting gases of pin of bleeding, also can to greatest extent gas extraction out;
3), the use of constant temperature water box, not only accelerate the speed of rock core release gas in air collector, and keep the constancy of air collector internal temperature, eliminate the impact of variation of ambient temperature, improve the comparability of rock core collection capacity.
Accompanying drawing explanation
Accompanying drawing 1 is the modular construction schematic diagram of the vacuum air-taking system of the on-the-spot rock core gas of Gas Hydrate Drilling of the present invention;
Accompanying drawing 2 is the structure for amplifying schematic diagram of the pumping cells in the vacuum air-taking system of the on-the-spot rock core gas of Gas Hydrate Drilling of the present invention;
Accompanying drawing 3 is that the vacuum air-taking system of the on-the-spot rock core gas of Gas Hydrate Drilling of the present invention produces negative pressure of vacuum process schematic
In figure, the implication of each Reference numeral is as follows:
1-tank body, 2-first O-ring seal, 3-second O-ring seal, 4-Cap for tin body, 5-secondary orifices pipe, 6-valve switch, 7-bleeds platform, 8-is with aspirating hole screw rod, 9-seal gasket, 10-in-line groove, 11-aspirating hole, 12-constant temperature water box, 13-temperature control panel, 14-tank, 15-tank body draw-in groove, 16-manufactures glass tube with vacuum, 17-straight pipe valve, 18-side siphunculus valve, 19-vacuum pump, 20-gauge tap, 21-barometer scale, 22-23-connecting hose, 24-plastic cistern, A-vacuum unit, B-air collector, C-pumping cells, the degassed environmental chamber of D-.
Embodiment
Be described in detail below in conjunction with the vacuum air-taking system of accompanying drawing to the on-the-spot rock core gas of Gas Hydrate Drilling of the present invention, but therefore do not limit the protection domain of the application.
As shown in Figure 1, the overall constituent components of vacuum air-taking system of the on-the-spot rock core gas of Gas Hydrate Drilling of the present invention comprises: vacuum unit A, air collector B, pumping cells C and degassed environmental chamber D.
Wherein vacuum unit A comprises manufacture glass tube with vacuum 16, vacuum pump 19, connecting hose 22-23 and plastic cistern 24, manufacture glass tube with vacuum 16 and comprise a straight pipe and side siphunculus, straight pipe is connected with the secondary orifices pipe 5 on Cap for tin body 4 in air collector B by rubber connecting hose 23, and straight pipe valve 17 is installed on straight pipe, for controlling the opening and closing of straight pipe; Side siphunculus is connected with vacuum pump 19 by rubber hose 22, side siphunculus valve 18 it is equipped with, for controlling and the UNICOM of vacuum pump 19 and shutoff, described vacuum pump 19 is also provided with gauge tap 20 and air pressure gauging table 21, gauge tap 20 also controls the time of taking out vacuum processed for opening and closing vacuum pump, barometer scale 21 shows the pressure after vacuumizing in manufacture glass tube with vacuum 16, and plastic cistern 24 is for discharging the air in connecting hose 23.
Wherein air collector B comprises tank body 1 and Cap for tin body 4, and described tank body 1 is the stainless steel core structure of one end open, and openend is used for putting into core sample; Openend outer wall has external thread, for the internal thread compact siro spinning technology with Cap for tin body 4 openend; Rubber seal 2 is housed, for the auxiliary seal between tank body 1 outer wall and Cap for tin body 4 inwall at the groove of tank body 1 outer wall external thread lower end.Described Cap for tin body 4 is the complete opening in one end, the other end is then the detachable stainless steel device of the perforate end with a secondary orifices and a main aperture, the openend of described Cap for tin body 4 is circular tube shaped, inwall there is internal thread, by rotating, the tapped inwall of Cap for tin body 4 openend can with the externally threaded outer wall compact siro spinning technology of tank body 1 opening end band, and connection maximum by tank body O-ring seal 2 formed sealing.Part on described Cap for tin body 4 openend pipe is Cap for tin body 4 perforate end, the inner chamber of described perforate end is round table-like inclined-plane, smooth surface, the gas being beneficial to the release of rock core in tank body 1 converges to the pumping cells C at top, the top diameter of round table-like inner chamber is about in 5mm(pumping cells immediately below platform 7 of bleeding) left and right, and seamlessly transit with the spherical crown shape aspirating chamber of bleeding in platform, spherical crown shape aspirating chamber is the final habitat of the gas collected through round table-like inner chamber, is also the aspirating chamber of inserting needle sampling.A transition platform is had between the tapped top of Cap for tin body 4 openend and round table-like intracavity bottom, for placing rubber seal 3, when Cap for tin body 4 to be connected with tank body 1 tighten time, tank body 1 perforate end port, namely formed with the rubber seal 3 of Cap for tin body 4 and seal, and make inside and outside air collector isolated.The main aperture of the perforate end of Cap for tin body 4 is the top (diameter is about about 5mm) of round table-like inner chamber, upwards even transition is connected to the spherical crown shape aspirating chamber of pumping cells C, the side of Cap for tin body 4 main aperture has secondary orifices, secondary orifices pipe 5 is one run through the stainless-steel tube inside and outside Cap for tin body 4 through secondary orifices, outside Cap for tin body 4, with valve switch 6 on secondary orifices pipe 5, inside Cap for tin body 4, the length of secondary orifices pipe 5, the pipe height of Cap for tin body 4 openend should be greater than, to be connected after sealing with tank body 1 to make Cap for tin body 4, during the upright extracting gases of tank body 1, the mouth of pipe of secondary orifices pipe 5 extend into below liquid level all the time.Outside Cap for tin body 4, secondary orifices pipe 5 is connected with the straight pipe manufactured bottom glass tube with vacuum 16 by rubber connecting hose 23, and the valve switch 6 on secondary orifices pipe 5 is for controlling extraneous being communicated with air collector B inside.
Wherein pumping cells C comprises platform 7 of bleeding, band aspirating hole screw rod 8, to bleed pin and seal gasket 9, platform 7 of bleeding is provided with directly over the main aperture on the top of the round table-like inner chamber of described Cap for tin body 4, described platform 7 outward appearance of bleeding be two stacked cylindrical, lower cylindrical inside is formed with spherical crown shape aspirating chamber, bottom aspirating chamber, inner cavity top (main aperture) round table-like with Cap for tin body seamlessly transits and is communicated with, aspirating chamber top is communicated in the tapped interior cylindrical cavity of cylinder, and cylindrical cavity internal diameter is greater than spherical crown shape aspirating chamber top exit internal diameter to place seal gasket 9, structure for amplifying as shown in Figure 2, described seal gasket 9 is positioned at the bottom of the interior cylindrical cavity chamber of cylinder, and to bending down the spherical crown shape aspirating chamber outlet being connected to lower cylinder, the internal thread in upper cylinder cylindrical cavity is screwed with aspirating hole screw rod 8, and be connected to sealing Special seal rubber cushion 9 to bending down.Band aspirating hole screw rod 8 profile is lower cylindrical, top round pie.Lower cylindrical outer wall belt screw thread, forms compact siro spinning technology with the screw thread on the cylindrical cavity inwall of cylinder on platform of bleeding.The in-line groove 10 at a Ge Guo center is provided with aspirating hole screw rod 8 top cake end face, for screwing band aspirating hole screw rod 8, when tightening band aspirating hole screw rod 8, top, its lower end pressure Special seal rubber cushion 9 and by the spherical crown shape aspirating chamber of bleeding in platform 7 and external environment, so by air collector B inner and external environment.Center with aspirating hole screw rod 8 is the through aspirating holes 11 in two ends, and upper end is positioned at the centre of in-line groove 10, rectifies the spherical crown shape aspirating chamber of bleeding in platform to Cap for tin body top down.Special seal rubber cushion 9 is placed in bottom the upper cylindrical cavity of platform 7 of bleeding, can the spherical crown shape aspirating chamber at sealed shell of tank lid 4 top, the pin inserting needle that also can be used for bleeding, extracts and passes through.In the preferred technical solution of the present invention, the Cap for tin body 4 of described pumping cells C and described air collector B is integrally formed, namely Cap for tin body 4 is upwards integrally formed the platform of bleeding of pumping cells in its end face main aperture position, that is with Cap for tin body 4, platform 7 of bleeding can be structure as a whole to ensure that round platform inner chamber seals with spherical crown shape aspirating chamber and is communicated with, two stacked right cylinders of certainly bleeding included by platform also can be integrally formed to ensure impermeability.In this preferred embodiment, can will be in the described pumping cells of integrative-structure and air collector unified definition for getting gas unit, described pumping cells C is as the delivery outlet part of air collector B, but the present invention is not as limit, both can otherwise link together, as long as can ensure impermeability therebetween.
Wherein said degassed environmental chamber D preferably adopts a constant temperature water box 12, mainly comprises: temperature control panel 13, tank 14 and tank body draw-in groove 15, and tank body draw-in groove 15 is arranged in tank 14, for the tank body 1 in fixed set gas tank B; Temperature control panel 13 is arranged at sink outer walls, the temperature of water in adjustable tank 14.
Vacuum air-taking system of the present invention is adopted to carry out the leaching process of Gas Hydrate Drilling on-the-spot rock core gas as follows:
(1) early-stage preparations
Before each collection gas, bottom cylindrical cavity Special seal rubber cushion 9 being placed in cylinder on platform 7 of bleeding, be then screwed into band aspirating hole screw rod 8, and tighten, with press seal rubber cushion being with aspirating hole screw rod 8 with a word screwdriver.
Check whether tank body O-ring seal 2 and Cap for tin body O-ring seal 3 place, and in plastic cistern 24, put into saturated brine, the degree of depth is advisable so that air collector can be made to flood completely.
Open the valve switch 6 of Cap for tin body 4, Cap for tin body 4 is submerged in completely and holds in the plastic cistern 24 of saturated brine, to discharge wherein air.
(2) deaeration
The rock core first obtained by hydrate probe boring rinses with clear water rapidly, weighs or puts into air collector tank body 1 as early as possible after measuring volume, being then immersed in completely by the tank body 1 that core sample is housed and being equipped with in the plastic cistern 24 of saturated brine, to discharge wherein air.
Under water Cap for tin body 4 is buckled on tank body 1, with special purpose device, Cap for tin body 4 is tightened sealing, constitute a complete air collector, discharge wherein air, as shown in Figure 3 simultaneously.Then the valve switch 6 of secondary orifices pipe 5 on Cap for tin body 4 is closed, to make air collector inner completely isolated with the external world.
(3) negative pressure of vacuum is manufactured
As shown in Figure 3, rubber pipette bulb is utilized to discharge air in rubber connecting hose 23 under water, close the straight pipe valve 17 manufacturing glass tube with vacuum 16, be then fixed on Cap for tin body secondary orifices pipe 5 by rubber connecting hose 23 one end, the other end is fixedly attached on the straight pipe of manufacture glass tube with vacuum 16; Then one end of rubber connecting hose 22 is connected on the side siphunculus manufacturing glass tube with vacuum 16, the other end connects on the aspirating hole of vacuum pump 19.
Lay air collector B uprightly steady, opening side siphunculus valve 18, opens the gauge tap 20 of vacuum pump, after barometer scale 21 stable reading continues half a minute, successively closes side siphunculus valve 18 and vacuum pump switch 20.Now, manufacture glass tube with vacuum 16 and form stable vacuum negative pressure condition.
Open the valve switch 6 on Cap for tin body secondary orifices pipe, more slowly open the straight pipe valve 17 manufacturing glass tube with vacuum 16.Now air collector is inner is communicated with manufacture glass tube with vacuum 16, and the saturated brine in air collector enters to manufacture in glass tube with vacuum 16 at the flows by action of negative pressure.In glass tube with vacuum to be manufactured after stable level (pressure reaches balance), close the valve switch 6 on Cap for tin body secondary orifices pipe, in air collector B, namely form negative pressure.Open the side siphunculus valve 18 of glass tube with vacuum 16, after returning to normal atmosphere (An) in glass tube with vacuum, extract glass tube with vacuum 16.
(4) constant temperature is degassed
Hydrate probe boring core sample is contained with and the sealing air collector with vacuum negative pressure condition puts into the tank body draw-in groove 15 of the constant temperature water box 12 of 40 DEG C by above-mentioned, and make the water flooding Cap for tin body 4 in constant temperature water box tank 14, heated at constant temperature 2 hours, namely completes degasification process.
(5) extracting gases
Put down crouch in the plastic cistern 24 of splendid attire saturated brine by completing degassed air collector, install under water discharged air rubber connecting hose 23 on the secondary orifices pipe 5 of Cap for tin body 4, rubber connecting hose 23 other end is placed in plastic cistern water body.
Stand up air collector.To the pin of bleeding of a small amount of saturated brine be housed by the aspirating hole 11 on band aspirating hole screw rod 8, slowly pierce through Special seal rubber cushion 9, enter the spherical crown shape aspirating chamber (pin salt solution injection air collector or air collector gas enter pin of bleeding once bleed, and namely show to penetrate aspirating chamber) at Cap for tin body top.
Open the valve switch 6 on Cap for tin body secondary orifices pipe, start extracting gases.After bleeding, the gas inject of bleeding in needle tubing is inverted in (being full of saturated brine) the special gas bottle in saturated brine, tightens gas collection bottle cap sealing under water.
The gas of gas bottle, otherwise being sent to field experiment room analyzes at once, otherwise being inverted into cold compartment of refrigerator preserves.
Below be only that the preferred embodiment of the present invention is described; technical scheme of the present invention is not limited to this; the any known distortion that those skilled in the art do on the basis that major technique of the present invention is conceived all belongs to the claimed technology category of the present invention, and the concrete protection domain of the present invention is as the criterion with the record of claims.
Claims (8)
1. the vacuum air-taking system of the on-the-spot rock core gas of Gas Hydrate Drilling, it is characterized in that, comprise: vacuum unit (A), air collector (B), pumping cells (C) and provide the constant temperature water box (12) of degassed environment for air collector (B), wherein said vacuum unit (A) comprises manufacture glass tube with vacuum (16) and vacuum pump (19), described manufacture glass tube with vacuum (16) is connected with vacuum pump (19) by pipeline, described air collector (B) comprises tank body (1) that is detachable and that be tightly connected and Cap for tin body (4), (4) are formed with main aperture and secondary orifices to described Cap for tin body, described secondary orifices is provided with secondary orifices pipe (5), described secondary orifices pipe (5) is connected to described manufacture glass tube with vacuum (16) by pipeline, the main aperture of described Cap for tin body is arranged described pumping cells (C), and described main aperture is communicated with the aspirating chamber of described pumping cells (C), the core structure that further described tank body (1) is one end open, one end is closed, openend is used for putting into core sample, and openend outer wall is provided with external thread, and the first O-ring seal (2) is equipped with at the unit with grooves in outer wall place of threaded lower end outside, the complete opening in one end of described Cap for tin body (4), the other end is provided with described secondary orifices and main aperture, the openend inwall of described Cap for tin body (4) be provided with can with the close-connected internal thread of external thread of tank body (1) openend outer wall, and to be formed by extruding first O-ring seal (2) and tank body (1) at connection maximum and be tightly connected, round table-like inner chamber is formed above the internal thread of described Cap for tin body (4) openend, the top of round table-like inner chamber is as described main aperture, a transition platform is formed between described internal thread top and round table-like intracavity bottom, described transition platform is provided with the second O-ring seal (3), when Cap for tin body (4) and tank body (1) tighten be connected time, the ora terminalis of described tank body (1) openend abuts described second O-ring seal (3) thus is formed with Cap for tin body (4) and seals, further wherein said manufacture glass tube with vacuum (16) comprises a straight pipe and side siphunculus, described straight pipe is connected with the secondary orifices pipe (5) on the Cap for tin body (4) of air collector (B) by pipeline, and described side siphunculus is connected with vacuum pump (19) by pipeline.
2. vacuum air-taking system according to claim 1, it is characterized in that, described pipeline is rubber connecting hose (22,23), described straight pipe is equipped with straight pipe valve (17) for controlling the opening and closing of straight pipe, described side siphunculus is equipped with side siphunculus valve (18) for controlling the opening and closing of side siphunculus, described vacuum pump (19) is provided with gauge tap (20) and air pressure gauging table (21).
3. vacuum air-taking system according to claim 1 and 2, it is characterized in that, secondary orifices on described Cap for tin body (4) is located at the side of main aperture, described secondary orifices pipe (5) is run through inside and outside described Cap for tin body (4) through described secondary orifices, and secondary orifices pipe (5) outside Cap for tin body is provided with valve switch (6), secondary orifices pipe (5) length inside Cap for tin body is greater than the height of Cap for tin body (4), extend into below the liquid level in air collector all the time to ensure to get secondary orifices pipe (5) mouth of pipe in gas process.
4. vacuum air-taking system according to claim 1 and 2, it is characterized in that, wherein said pumping cells (C) comprises platform of bleeding (7), band aspirating hole screw rod (8) and seal gasket (9), described platform of bleeding (7) is stacked cylindrical and be arranged at directly over described main aperture in two, the lower cylindrical inside of platform (7) of wherein bleeding is formed with the aspirating chamber of spherical crown shape, the bottom of described aspirating chamber seamlessly transits with described main aperture and is communicated with, the upper cylindrical inside of platform (7) of wherein bleeding is formed with interior cylindrical cavity, the top of described aspirating chamber is communicated with described interior cylindrical cavity, described seal gasket (9) is positioned over the aspirating chamber outlet being also connected to lower cylinder at the bottom of the described interior cylindrical cavity chamber of cylinder downwards, be connected to described seal gasket (9) downwards in the interior cylindrical cavity that described band aspirating hole screw rod (8) is arranged at described upper cylinder.
5. vacuum air-taking system according to claim 4, it is characterized in that, described band aspirating hole screw rod (8) profile is lower cylindrical, top round pie, center is provided with the through aspirating hole in two ends (11), lower cylindrical outer wall is with external thread, internal thread is formed in the interior cylindrical cavity of the upper cylinder of described platform of bleeding, described band aspirating hole screw rod (8) top cake end face is provided with the in-line groove (10) at a Ge Guo center, for screwing in the upper cylinder of described platform of bleeding with thread connecting mode with aspirating hole screw rod (8), and make top, band aspirating hole screw rod (8) lower end be pressed on described seal gasket (9), aspirating hole (11) the puncture through seal rubber cushion (9) of pin band of bleeding aspirating hole screw rod (8) and enter aspirating chamber.
6. vacuum air-taking system according to claim 5, it is characterized in that, the platform of bleeding (7) of described pumping cells (C) and the Cap for tin body (4) of described air collector (B) are integrally formed, described in bleed two stacked cylinders of platform be integrally formed, the material of described air collector is stainless steel; Described O-ring seal (2,3) is rubber seal.
7. vacuum air-taking system according to claim 1 and 2, it is characterized in that, described constant temperature water box (12) comprising: temperature control panel (13), tank (14) and tank body draw-in groove (15), described tank body draw-in groove (15) is arranged in described tank (14), for fixed set gas tank, described temperature control panel (13) is arranged at sink outer walls.
8. vacuum air-taking system according to claim 1 and 2, also comprises the water tank (24) of bleeding for air collector exhaust and pin of bleeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149566.6A CN103217318B (en) | 2013-04-26 | 2013-04-26 | The vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling |
Applications Claiming Priority (1)
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| CN201310149566.6A CN103217318B (en) | 2013-04-26 | 2013-04-26 | The vacuum air-taking system of the on-the-spot rock core gas of a kind of Gas Hydrate Drilling |
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| CN106680029B (en) * | 2015-11-11 | 2020-04-17 | 中国石油化工股份有限公司 | Portable vacuum sampling bottle and application method thereof |
| CN108387704B (en) * | 2018-01-25 | 2024-03-19 | 广州海洋地质调查局 | Decomposing and burning device and method for liquid nitrogen frozen natural gas hydrate sample |
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| CN100573089C (en) * | 2006-04-06 | 2009-12-23 | 中国石油化工股份有限公司 | A kind of device that is used for preparing or collecting the rock adsorptive gaseous hydrocarbon |
| CN202793863U (en) * | 2012-09-27 | 2013-03-13 | 中国科学院地质与地球物理研究所兰州油气资源研究中心 | Rock analysis gas high vacuum degassing and gas collecting device |
| CN203216762U (en) * | 2013-04-26 | 2013-09-25 | 中国地质调查局油气资源调查中心 | Vacuum gas collecting system applied to core gas in natural gas hydrate drilling site |
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