CN203716936U - Liquid nitrogen emptying system of liquid nitrogen equipment for oil-gas field - Google Patents
Liquid nitrogen emptying system of liquid nitrogen equipment for oil-gas field Download PDFInfo
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- CN203716936U CN203716936U CN201420047620.6U CN201420047620U CN203716936U CN 203716936 U CN203716936 U CN 203716936U CN 201420047620 U CN201420047620 U CN 201420047620U CN 203716936 U CN203716936 U CN 203716936U
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- liquid nitrogen
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Abstract
The utility model relates to a liquid nitrogen emptying system of liquid nitrogen equipment for an oil-gas field. The liquid nitrogen emptying system comprises a liquid nitrogen feeding system, a liquid nitrogen pumping system, a liquid nitrogen evaporation system, an auxiliary heating system, a power system, a waste gas discharging system, a liquid nitrogen emptying manifold and a mixed liquid nitrogen discharging manifold, and is characterized in that the liquid nitrogen feeding system comprises a first output pipeline and a second output pipeline, wherein the first output pipeline is connected with an inlet of the liquid nitrogen pumping system; the second output pipeline is connected with an inlet of the liquid nitrogen emptying manifold; the liquid nitrogen pumping system pressurizes liquid nitrogen from the liquid nitrogen feeding system and is provided with two paths of outlets, the first outlet is connected with the liquid nitrogen evaporation system, and the second outlet is connected with the inlet of the liquid nitrogen emptying manifold; the power system and the auxiliary heating system are intersected with an outlet of the liquid nitrogen emptying manifold; a waste gas and liquid nitrogen heat exchange space is formed at an intersection. The liquid nitrogen emptying system has the beneficial effect that the safety of the liquid nitrogen equipment during discharging of the liquid nitrogen is improved.
Description
Technical field
The utility model relates to oil field liquid nitrogen construction operation apparatus field, relates in particular to the liquid nitrogen emptying system of liquid nitrogen plant for a kind of oil gas field.
Background technology
Along with to the raising of oil field, gas-field exploitation technology and the increase to oil demand, liquid nitrogen plant is being brought into play more and more important effect in fields such as oil field prospecting formation testing, oil formation improvement, safe pressure testing, viscous crude operation, nitrogen injection drilling and nitrogen foam pressure breaks.But also there is very large defect at liquid nitrogen aspect emptying in current liquid nitrogen plant.The emptying scheme of liquid nitrogen of liquid nitrogen plant is for directly discharged to atmosphere at present, and the liquid nitrogen of discharge is easy to splash on liquid nitrogen plant and other on-line equipments, to equipment, causes damage, and reduces the application life of equipment; Due to the ultralow temperature feature of liquid nitrogen, discharged to the liquid nitrogen of atmosphere, can make airborne steam atomization or liquefaction, when liquid nitrogen plant operation, operation field can fill the air by white mist, block wellsite operation personnel's sight line, for well site, commander is unfavorable, also has potential safety hazard simultaneously; On hand, there is very large danger in the operating personnel that also easily splash equipment discharged to the liquid nitrogen of atmosphere when wind speed is larger.
Utility model content
The deficiency that the utility model exists for above-mentioned prior art, provides a kind of safety in utilization that can improve liquid nitrogen plant, and the liquid nitrogen emptying system of liquid nitrogen plant for a kind of oil gas field when discharge liquid nitrogen, miscellaneous equipment online with it also being played a protective role.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: the liquid nitrogen emptying system of liquid nitrogen plant for a kind of oil gas field, comprise liquid nitrogen feed system, liquid nitrogen pumping system, liquid nitrogen vaporization system, secondary hot system, dynamical system, exhaust emission system, the emptying manifold of liquid nitrogen and mixing liquid nitrogen exhaust manifold, it is characterized in that, described liquid nitrogen feed system comprises the first output pipe and the second output pipe, described the first output pipe is connected with the entrance of described liquid nitrogen pumping system, described the second output pipe imports mouth with described liquid nitrogen evacuated tube and is connected, described liquid nitrogen pumping system pressurizes the liquid nitrogen from liquid nitrogen feed system divide two-way outlet, the first outlet is connected with described liquid nitrogen vaporization system, the second outlet imports mouth with described liquid nitrogen evacuated tube and is connected, described dynamical system and secondary hot system are converged by described exhaust emission system and the oral sex of described liquid nitrogen evacuated tube remittance abroad, in described intersection, be provided with waste gas and liquid nitrogen heat transfer space.
The beneficial effects of the utility model are: improved the safety of liquid nitrogen plant discharge liquid nitrogen, and liquid nitrogen plant and parts thereof and other on-line equipments are played a very good protection, avoided the liquid nitrogen to splash the infringement causing on equipment; Make wellsite operation environment without white mist, operation field is beneficial to commander; The nitrogen temperature of discharging is higher than atmosphere, and hot nitrogen directly goes up to the air, and operation field nitrogen gas concn is unlikely to too high, avoids producing and suffocates; Meanwhile, eliminate liquid nitrogen and splashed operating personnel's potential safety hazard with it.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, the hot system of described pair comprises direct-fired evaporimeter or heater, and described dynamical system comprises motor.
Adopt the beneficial effect of above-mentioned further scheme to be, make full use of implement and carry the hot waste gas that thermal source produces and make liquid nitrogen vaporization to be discharged, when reducing liquid nitrogen discharge infringement, reduce waste gas discharged to the temperature of atmosphere, be conducive to Environmental security
Further, the emptying manifold of described liquid nitrogen is low temperature resistant material, and described heat transfer space is heat-exchanger rig.
Adopt the beneficial effect of above-mentioned further scheme to be, more durable, increase the service life.Its heat transfer space can be both the intersection of manifold outlet, also can adopt heat exchange facility to improve heat transfer effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1, liquid nitrogen emptying system; 2, liquid nitrogen feed system; 2-1, the first output pipe; 2-2, the second output pipe; 3, liquid nitrogen pumping system; 3-1, the first outlet; 3-2, the second outlet; 4, liquid nitrogen vaporization system; 5, secondary hot system; 6, dynamical system; 7, exhaust emission system; 8, mix liquid nitrogen exhaust manifold; 9, the emptying manifold of liquid nitrogen; 10, heat transfer space.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in fig. 1, the liquid nitrogen emptying system 1 of liquid nitrogen plant for a kind of oil gas field, comprise liquid nitrogen feed system 2, liquid nitrogen pumping system 3, liquid nitrogen vaporization system 4, secondary hot system 5, dynamical system 6, exhaust emission system 7, the emptying manifold 9 of liquid nitrogen and mixing liquid nitrogen exhaust manifold 8, it is characterized in that, described liquid nitrogen feed system 2 comprises the first output pipe 2-1 and the second output pipe 2-2, described the first output pipe 2-1 is connected with the entrance of described liquid nitrogen pumping system, described the second output pipe 2-2 is connected with emptying manifold 9 entrances of described liquid nitrogen, described liquid nitrogen pumping system 3 pressurizes the liquid nitrogen from liquid nitrogen feed system divide two-way outlet, the first outlet 3-1 is connected with described liquid nitrogen vaporization system 4, the second outlet 3-2 is connected with emptying manifold 9 entrances of described liquid nitrogen, described dynamical system 6 and secondary hot system 5 cross by emptying manifold 9 outlets of described exhaust emission system 7 and described liquid nitrogen, in described intersection, be provided with waste gas and liquid nitrogen heat transfer space 10.
The hot system 5 of described pair comprises direct-fired evaporimeter or heater, and described dynamical system 6 comprises motor.
The emptying manifold 9 of described liquid nitrogen is low temperature resistant material, and described heat transfer space 10 is heat-exchanger rig.
Operating principle of the present utility model is: the liquid nitrogen that liquid nitrogen feed system 2 and liquid nitrogen pumping system 3 are discharged by the emptying manifold 9 of liquid nitrogen, carry out interchange of heat with the waste gas with used heat being produced by dynamical system 6 and secondary hot system 5, the liquid nitrogen vaporization that the emptying manifold of liquid nitrogen 9 is discharged is nitrogen, with together with the waste gas of 7 li of gas recovery systems by mixing liquid nitrogen exhaust manifold 8 discharged to atmosphere.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. the liquid nitrogen emptying system of liquid nitrogen plant for an oil gas field, comprise liquid nitrogen feed system, liquid nitrogen pumping system, liquid nitrogen vaporization system, secondary hot system, dynamical system, exhaust emission system, the emptying manifold of liquid nitrogen and mixing liquid nitrogen exhaust manifold, it is characterized in that, described liquid nitrogen feed system comprises the first output pipe and the second output pipe, described the first output pipe is connected with the entrance of described liquid nitrogen pumping system, described the second output pipe imports mouth with described liquid nitrogen evacuated tube and is connected, described liquid nitrogen pumping system pressurizes the liquid nitrogen from liquid nitrogen feed system divide two-way outlet, the first outlet is connected with described liquid nitrogen vaporization system, the second outlet imports mouth with described liquid nitrogen evacuated tube and is connected, described dynamical system and secondary hot system are converged by described exhaust emission system and the oral sex of described liquid nitrogen evacuated tube remittance abroad, in described intersection, be provided with waste gas and liquid nitrogen heat transfer space.
2. the liquid nitrogen emptying system of liquid nitrogen plant for oil gas field according to claim 1, is characterized in that, the hot system of described pair comprises direct-fired evaporimeter or heater, and described dynamical system comprises motor.
3. the liquid nitrogen emptying system of liquid nitrogen plant for oil gas field according to claim 1, is characterized in that, the emptying manifold of described liquid nitrogen is low temperature resistant material, and described heat transfer space is heat-exchanger rig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047620.6U CN203716936U (en) | 2014-01-24 | 2014-01-24 | Liquid nitrogen emptying system of liquid nitrogen equipment for oil-gas field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047620.6U CN203716936U (en) | 2014-01-24 | 2014-01-24 | Liquid nitrogen emptying system of liquid nitrogen equipment for oil-gas field |
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| CN203716936U true CN203716936U (en) | 2014-07-16 |
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| CN201420047620.6U Expired - Fee Related CN203716936U (en) | 2014-01-24 | 2014-01-24 | Liquid nitrogen emptying system of liquid nitrogen equipment for oil-gas field |
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- 2014-01-24 CN CN201420047620.6U patent/CN203716936U/en not_active Expired - Fee Related
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