CN105044285A - Breaker of natural gas hydrate and method for breaking natural gas hydrate - Google Patents
Breaker of natural gas hydrate and method for breaking natural gas hydrate Download PDFInfo
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- CN105044285A CN105044285A CN201510415165.XA CN201510415165A CN105044285A CN 105044285 A CN105044285 A CN 105044285A CN 201510415165 A CN201510415165 A CN 201510415165A CN 105044285 A CN105044285 A CN 105044285A
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Abstract
The invention provides a breaker of a natural gas hydrate and a method for breaking the natural gas hydrate. The breaker of the natural gas hydrate comprises: a reaction vessel, the external wall of which is provided with an electric heating device and which is provided with a liquid-phase inlet, a liquid-phase outlet, a gas-phase inlet, a gas-phase outlet, and pressure measuring ports; and a stirring and breaking device comprising a waterproof electrical machine fixed in the reaction vessel, a telescopic device connected to the waterproof electrical machine, a hydraulic device driving the telescopic device to be stretched out and drawn back, and a cutting knife connected to the telescopic device. The beneficial effects of the invention are that an excavating device convenient for researching ocean natural gas hydrate is provided; natural gas hydrate thick-liquid is provided for a pipeline transportation experiment of the natural gas hydrate; and research on the natural gas hydrate becomes convenient.
Description
Technical field
The present invention relates to the technical field of exploiting ocean natural gas hydrates, refer more particularly to a kind of method of gas hydrate breaker and broken gas hydrate.
Background technology
Gas hydrate are a kind of cage modle crystalline compounds formed at high pressure low temperature Water Under and the low-molecular-weight hydrocarbon compound of rock gas, have the features such as energy density is high, the rear noresidue of burning, are acknowledged as new green power.At present, the gas hydrate of occurring in nature are based on gas hydrate, and the overwhelming majority is contained in solid form in seabed, and exploitation difficulty is very large.Laboratory experiment for exploring the exploitation of ocean gas hydrate, the synthesized hydrate in the reactor of high pressure low temperature (P=10MPa, T=2 DEG C) by water and rock gas usually.Gas hydrate sample stores in a kettle. after synthesizing in reactor in solid form, and is bonded together with reactor wall.How it is carried out fragmentation under the condition of high pressure low temperature, carry out ocean gas hydrate digging simulated experiment, for the defeated experiment of gas hydrate pipe provides gas hydrate slurry body, it is the technical barrier of sea bed gas hydrate solid state fluidizing exploitation simulated experiment.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, providing a kind of method of gas hydrate breaker and broken gas hydrate.
The present invention is realized by above technical scheme:
The invention provides a kind of gas hydrate breaker, this gas hydrate breaker comprises: reactor; The outer wall of described reactor is enclosed with electric heater unit; Described reactor has liquid phase entrance, liquid-phase outlet, gas phase entrance, gaseous phase outlet and pressure tappings;
Stir breaker, comprise the waterproof machine be fixed in described reactor, the retractor device be connected with described waterproof machine, drive the hydraulic means that described retractor device is flexible, the cutting knife be connected with described retractor device.
Preferably, the output shaft of described waterproof machine is connected with described retractor device by shaft coupling.
Preferably, described retractor device comprises the spline housing be connected with described shaft coupling and the splined shaft be sleeved in described spline housing; And described hydraulic means comprises in the hydraulic cylinder that is connected with described waterproof machine and managing, the hydraulic cylinder outer tube be fixedly connected with pipe in described hydraulic cylinder, be positioned at the piston of described hydraulic cylinder outer tube, and described splined shaft is fixedly connected with described piston.
Preferably, also comprise base plate, described base plate supports described reactor by supporting leg.
Preferably, described reactor comprises cylindrical shell, is fixed on the flat cover at described cylindrical shell top, and is fixed on the low head of described cylinder body bottom; Wherein, described liquid-phase outlet and pressure tappings are arranged on described cylindrical shell; Described liquid phase entrance and described gas phase entrance are arranged on described low head; Described gas phase entrance is arranged on described flat cover.
Preferably, described flat cover is provided with suspension ring.
Preferably, described stirring breaker is fixed on described flat cover.
Present invention also offers a kind of method utilizing the broken gas hydrate of above-mentioned gas hydrate breaker, it is characterized in that, the method comprises:
(1) after gas hydrate compound experiment terminates, the liquid phase entrance of off-response still, liquid-phase outlet, gas phase entrance, gaseous phase outlet, guarantee that in still, hydrate is in cryogenic high pressure environment, start the electric heater unit that reactor outside wall surface is wound around, make the hydrate decomposes on reactor internal face, no longer bond with reactor internal face, judge that solid water compound and reactor internal face stop heating after departing from;
(2) start the stirring breaker in reactor, control cutting knife and move down into solid water compound surface, start waterproof machine, cutting knife rotary cutting, crushing operation starts;
(3) crushing operation simultaneously, is opened reactor bottom liquid phases entrance, in reactor, is pumped into water, the hydrate after fragmentation is existed with slurry form, opens the liquid-phase outlet of reactor simultaneously, and the broken hydrate slurry formed exports.
The invention has the beneficial effects as follows: provide the device being convenient to the digging studying ocean gas hydrate, for the defeated experiment of gas hydrate pipe provides gas hydrate slurry body, conveniently gas hydrate are studied.
Accompanying drawing explanation
Fig. 1 is the structural representation of the gas hydrate breaker that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the stirring breaker that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of gas hydrate breaker provided by the invention, and Fig. 2 is the structural representation of the stirring breaker that the embodiment of the present invention provides.
Embodiments provide a kind of gas hydrate breaker, this gas hydrate breaker comprises: reactor; The outer wall of reactor is enclosed with electric heater unit; Reactor has liquid phase entrance d, liquid-phase outlet b, gas phase entrance c, gaseous phase outlet a and pressure tappings e, f;
Stir breaker 8, comprise the waterproof machine 101 be fixed in reactor, the retractor device be connected with waterproof machine 101, drive the hydraulic means that retractor device is flexible, the cutting knife 116 be connected with retractor device.
In the above-described embodiments, the hydrate decomposes on reactor internal face is made by employing electric heater unit, no longer bond with reactor internal face, and by stirring breaker, solid water compound is cut, simultaneously, by liquid phase entrance to adding liquid in reactor, form gas hydrate slurry body and conveniently gas hydrate are studied.
In order to the understanding of the gas hydrate breaker structure that provides the embodiment of the present invention and principle of work, below in conjunction with accompanying drawing 1 and accompanying drawing 2, it is described in detail.
As shown in Figure 1, reactor agent structure cylindrical shell 9, is fixed on the flat cover 2 at cylindrical shell 9 top, and is fixed on the low head 17 bottom cylindrical shell 9; Wherein, liquid-phase outlet b and pressure tappings e, f are arranged on cylindrical shell 9; Liquid phase entrance d and gas phase entrance c is arranged on low head 17; Gas phase entrance a is arranged on flat cover.Concrete, its agent structure is made up of flat cover 2, flange 7, cylindrical shell 9 and low head 17, flat cover 2 is arranged suspension ring 1, for lifting and opening flat cover 2 fast, flat cover 2 has gaseous phase outlet a, hydrostatic control mouth g, h, flange 7 be connected by bolt 3, nut 4, flat shim 5 with flat cover 2, and rely on oval ring 6 to seal.Cylindrical shell 9 on have pressure port e, f and liquid-phase outlet b, adapter 10 is connected by bolt 13, nut 14, pad 15 with flange 12, and flange connections is added with oval ring 11, and the slurry after fragmentation is discharged by liquid-phase outlet b.Low head 17 on have gas phase entrance c and liquid phase entrance d, air inlet tube 18 accesses gas phase entrance c place, water inlet adapter 19 is by bolt 24, nut 25, pad 26 and Flange joint, flange connections is added with oval ring 23, reactor is supported by supporting leg 20, be lined with backing plate 16 between supporting leg 20 and low head 17, supporting leg 20 lower end is welded with base plate 21.Stir breaker 8 to be connected with flat cover hydrostatic control mouth g, h by flexible pipe 27 and flexible pipe 28.
As shown in Figure 2, stir breaker 8 to be fixed on flat cover 2.Wherein, the output shaft of waterproof machine 101 is connected with retractor device by shaft coupling 103.Retractor device comprises the spline housing 108 be connected with shaft coupling 103 and the splined shaft 109 be sleeved in spline housing 108; And hydraulic means comprises pipe 102 in the hydraulic cylinder that is connected with waterproof machine 101, the hydraulic cylinder outer tube 104 be fixedly connected with pipe in hydraulic cylinder 102, be positioned at the piston 107 of hydraulic cylinder outer tube 104, and splined shaft 109 is fixedly connected with piston 107.Concrete, stirring breaker 8 should comprise hydraulic-driven and waterproof machine 101 drives, waterproof machine 101 drive spline housing 108 to rotate by shaft coupling 103, spline housing 108 and splined shaft 109 are connected by spline pair thus drive splined shaft 109 rotary motion, splined shaft 109 is multidiameter, and cutting knife 116 is loaded on splined shaft ladder place, and is fixed by pad 117, set nut 118, waterproof machine 101 starts, and drives cutting knife 116 to do rotary cutting motion.In hydraulic cylinder, pipe 102 and waterproof machine 101 are connected and fixed, in hydraulic cylinder, pipe 102 and hydraulic cylinder outer tube 104, bottom end cover 110 form hydraulic cylinder, hydraulic cylinder outer tube 104 wall upper and lower side has hydraulic pressure hole i and hydraulic pressure hole j, piston 107 moves vertically under the effect of hydraulic-driven power in hydraulic cylinder, and drive lower support lid 113, bearing 112 moves together, bearing 112 promotes power transmission and overlaps 114 set nuts 115 and move together, the axially-movable of final drive splined shaft 109, thus realize the axially-movable of cutting knife 116.Seal by O RunddichtringO 105,106,110 between pipe 103, piston cylinder outer tube 104, bottom end cover 111 in piston 107 and piston cylinder.
Present invention also offers a kind of method utilizing the broken gas hydrate of above-mentioned gas hydrate breaker, it is characterized in that, the method comprises:
(1) after gas hydrate compound experiment terminates, the liquid phase entrance of off-response still, liquid-phase outlet, gas phase entrance, gaseous phase outlet, guarantee that in still, hydrate is in cryogenic high pressure environment, start the electric heater unit that reactor outside wall surface is wound around, make the hydrate decomposes on reactor internal face, no longer bond with reactor internal face, judge that solid water compound and reactor internal face stop heating after departing from;
(2) start the stirring breaker in reactor, control cutting knife and move down into solid water compound surface, start waterproof machine, cutting knife rotary cutting, crushing operation starts;
(3) crushing operation simultaneously, is opened reactor bottom liquid phases entrance, in reactor, is pumped into water, the hydrate after fragmentation is existed with slurry form, opens the liquid-phase outlet of reactor simultaneously, and the broken hydrate slurry formed exports.
The invention has the beneficial effects as follows: provide the device being convenient to the digging studying ocean gas hydrate, for the defeated experiment of gas hydrate pipe provides gas hydrate slurry body, conveniently gas hydrate are studied.
When specific works, the technological process of ocean gas hydrate crushing experiment:
Broken pre-treatment job:
Broken pre-treatment job can make hydrate and reactor inwall depart from, and guarantees carrying out smoothly of crushing operation.Concrete operations are: reactor outer wall is enclosed with electrical heating copper pipe (electric heater unit), after lanthanum chloride hydrate experiment terminates, off-response still gas phase entrance c, gaseous phase outlet a, liquid phase entrance d, liquid-phase outlet b, start electrical heating copper pipe, moment spot heating is carried out to reactor still wall, its object is to the hydrate decomposes made on still internal face, guarantee that solid water compound no longer bonds with reactor inwall, by reactor pressure port e, f records reacting kettle inner pressure, guarantee stable conditions in reactor, judge that solid water compound and reactor internal face stop heating after departing from.
Hydrate crushing operation:
Hydrate crushing operation completes primarily of stirring crushing mechanism 8.Stir crushing mechanism 8 and comprise hydrostatic control and Electric Machine Control double control, primer fluid pressing system, in hydraulic control circuit, liquid gets back to hydraulic cylinder top by hydrostatic control hole g, flexible pipe 28, hydraulic pressure hole i after flowing through hydraulic pressure hole j, flexible pipe 27, hydrostatic control hole h, the outer hydraulic control circuit of still in piston cylinder, thus promote piston 107, lower support lid 113, bearing 112, power transmission cover 113, set nut 114 moves downward, drive splined shaft 109 to move downward vertically in spline housing 108 eventually, cutting knife 116 moves downward vertically.When cutting knife 116 arrives hydrate solid state surface, start waterproof machine 101, motor 101 drives shaft coupling 103, spline housing 108, splined shaft 109 rotary motion, and the cutting knife 116 be fixed on splined shaft 109 does rotary cutting motion thereupon, and hydrate crushing operation starts.
Hydrate slurry output operation:
Crushing operation starts simultaneously, open fluid inlet d, start ram pump, to reactor bottom water injection, open liquid-phase outlet b simultaneously, regulate liquid phase to import and export throttling valve, guarantee that reacting kettle inner pressure is stablized, stir breaker 8 continuous operation, the hydrate slurry after fragmentation is transported to multiphase flow pipeline from liquid-phase outlet b, for the defeated characteristic research of further hydration property management.Broken operation complete and containing hydrate slurry export after, motor is stopped to drive, change direction, hydraulic control system loop, in hydraulic control circuit liquid by piston cylinder internal upper part through hydraulic pressure hole i, flexible pipe 28, hydrostatic control hole g, by hydrostatic control hole h after the outer hydraulic control circuit of still, flexible pipe 27, hydraulic pressure hole j gets back to cylinder lower, thus promote piston 107, lower support lid 113, bearing 112, power transmission cover 113, set nut 114 moves upward, splined shaft 109 is driven axially to move upward in spline housing 108 eventually, cutting knife 116 axially moves upward, get back to original state.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a gas hydrate breaker, is characterized in that, comprising:
Reactor; The outer wall of described reactor is enclosed with electric heater unit; Described reactor has liquid phase entrance, liquid-phase outlet, gas phase entrance, gaseous phase outlet and pressure tappings;
Stir breaker, comprise the waterproof machine be fixed in described reactor, the retractor device be connected with described waterproof machine, drive the hydraulic means that described retractor device is flexible, the cutting knife be connected with described retractor device.
2. gas hydrate breaker according to claim 1, is characterized in that, the output shaft of described waterproof machine is connected with described retractor device by shaft coupling.
3. gas hydrate breaker according to claim 2, is characterized in that, described retractor device comprises the spline housing be connected with described shaft coupling and the splined shaft be sleeved in described spline housing; And described hydraulic means comprises in the hydraulic cylinder that is connected with described waterproof machine and managing, the hydraulic cylinder outer tube be fixedly connected with pipe in described hydraulic cylinder, be positioned at the piston of described hydraulic cylinder outer tube, and described splined shaft is fixedly connected with described piston.
4. gas hydrate breaker according to claim 2, is characterized in that, also comprise base plate, and described base plate supports described reactor by supporting leg.
5. gas hydrate breaker as claimed in claim 3, it is characterized in that, described reactor comprises cylindrical shell, is fixed on the flat cover at described cylindrical shell top, and is fixed on the low head of described cylinder body bottom; Wherein, described liquid-phase outlet and pressure tappings are arranged on described cylindrical shell; Described liquid phase entrance and described gas phase entrance are arranged on described low head; Described gas phase entrance is arranged on described flat cover.
6. gas hydrate breaker as claimed in claim 5, is characterized in that, described flat cover is provided with suspension ring.
7. gas hydrate breaker as claimed in claim 5, it is characterized in that, described stirring breaker is fixed on described flat cover.
8. utilize a method for the broken gas hydrate of the gas hydrate breaker described in claim 1, it is characterized in that, the method comprises:
(1) after gas hydrate compound experiment terminates, the liquid phase entrance of off-response still, liquid-phase outlet, gas phase entrance, gaseous phase outlet, guarantee that in still, hydrate is in cryogenic high pressure environment, start the electric heater unit that reactor outside wall surface is wound around, make the hydrate decomposes on reactor internal face, no longer bond with reactor internal face, judge that solid water compound and reactor internal face stop heating after departing from;
(2) start the stirring breaker in reactor, control cutting knife and move down into solid water compound surface, start waterproof machine, cutting knife rotary cutting, crushing operation starts;
(3) crushing operation simultaneously, is opened reactor bottom liquid phases entrance, in reactor, is pumped into water, the hydrate after fragmentation is existed with slurry form, opens the liquid-phase outlet of reactor simultaneously, and the broken hydrate slurry formed exports.
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| CN201510415165.XA CN105044285B (en) | 2015-07-15 | 2015-07-15 | A kind of method of gas hydrates breaker and broken gas hydrates |
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| CN201510415165.XA CN105044285B (en) | 2015-07-15 | 2015-07-15 | A kind of method of gas hydrates breaker and broken gas hydrates |
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Cited By (6)
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| CN106010698A (en) * | 2016-05-06 | 2016-10-12 | 西南石油大学 | Rapid synthesis device for natural gas hydrate |
| CN106840978A (en) * | 2017-01-13 | 2017-06-13 | 西南石油大学 | A kind of abrasive disk type crushing experiment device and method suitable for hydrate particle in pipe |
| CN106869872A (en) * | 2017-04-09 | 2017-06-20 | 杭州云蜂工业设计有限公司 | A kind of seabed combustible ice disintegrating apparatus |
| CN106968645A (en) * | 2017-04-09 | 2017-07-21 | 杭州云蜂工业设计有限公司 | A kind of sea bed gas hydrate disintegrating apparatus |
| CN108827754A (en) * | 2018-05-25 | 2018-11-16 | 西南石油大学 | A kind of crushing system for large scale gas hydrates rock sample |
| CN111810096A (en) * | 2020-07-17 | 2020-10-23 | 中国海洋石油集团有限公司 | Automatic microwave stirring, heating and decomposing device for natural gas hydrate and using method thereof |
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Cited By (10)
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| CN106010698A (en) * | 2016-05-06 | 2016-10-12 | 西南石油大学 | Rapid synthesis device for natural gas hydrate |
| CN106840978A (en) * | 2017-01-13 | 2017-06-13 | 西南石油大学 | A kind of abrasive disk type crushing experiment device and method suitable for hydrate particle in pipe |
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| CN108827754A (en) * | 2018-05-25 | 2018-11-16 | 西南石油大学 | A kind of crushing system for large scale gas hydrates rock sample |
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| US11465152B2 (en) | 2018-05-25 | 2022-10-11 | Southwest Petroleum University | Crushing system for large-size natural gas hydrate rock samples |
| CN111810096A (en) * | 2020-07-17 | 2020-10-23 | 中国海洋石油集团有限公司 | Automatic microwave stirring, heating and decomposing device for natural gas hydrate and using method thereof |
| CN111810096B (en) * | 2020-07-17 | 2022-04-08 | 中国海洋石油集团有限公司 | Automatic microwave stirring, heating and decomposing device for natural gas hydrate and using method thereof |
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