CN102140903A - Heat recovery type liquid nitrogen evaporation system - Google Patents
Heat recovery type liquid nitrogen evaporation system Download PDFInfo
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- CN102140903A CN102140903A CN2010101107953A CN201010110795A CN102140903A CN 102140903 A CN102140903 A CN 102140903A CN 2010101107953 A CN2010101107953 A CN 2010101107953A CN 201010110795 A CN201010110795 A CN 201010110795A CN 102140903 A CN102140903 A CN 102140903A
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- heat
- liquid nitrogen
- nozzle
- exchange device
- type liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention relates to a heat recovery type liquid nitrogen evaporation system. In order to overcome the defect that a liquid nitrogen evaporator is unmatched with liquid nitrogen pump equipment due to poor safety performance and low heat recovery efficiency of a liquid nitrogen evaporation device, a heat exchange device comprises an atomization device (1) and a heat exchange device (2), wherein a nozzle (5) of the atomization device (1) is communicated with an inner cavity of a heat exchange chamber (11) of the heat exchange device (2); a compressed air pipe (3) of the atomization device (1) is fixedly connected with a spray pipe (6); the front end of the spray pipe (6) is provided with the nozzle (5); the nozzle area of the nozzle (5) is smaller than the cross sectional area of the spray pipe (6); one end of a siphon pipe (7) is communicated with the compressed air pipe (3), and the other end is positioned in a water tank (9); and the upper end of the heat exchange chamber (11) of the heat exchange device (2) is provided with an exhaust hole (10). The invention has the advantages of reasonable structure, capability of effectively enhancing the heat capacity of the heat exchange device and enhancing the heat efficiency, safety, reliability and convenience for regulation and control.
Description
Affiliated technical field
The present invention relates to the liquid nitrogen vaporization system in a kind of oil development field, especially relate to a kind of heat reclamation type liquid nitrogen vaporization system.
Background technology
In the oil and gas development process, use nitrogen technology to oil well, oil reservoir handle compare with routine techniques have safely, save time, fast, efficiently, characteristics such as success rate height.At present, the liquid nitrogen vaporization in the oil and gas development operation mainly contains dual mode.Usually adopt direct-fired for the big discharge capacity liquid nitrogen of high pressure low temperature mode of heating, promptly adopt the oil burning boiler heating, (CN201092827Y), form as disclosed Chinese utility model patent on August 19th, 2009 " the direct-fired liquid nitrogen vaporization device of single chamber " by wind-force provisioning component, oil gas electric hybrid module, combustion chamber inner chamber, combustion chamber exocoel, coil pipe chamber, control cabinet; The wind-force provisioning component is by the fluid motor-driven fan; The oil gas electric hybrid module comprises igniter and the atomizer that is contained on the installing plate; Combustion chamber inner chamber housing is provided with fire extinguishing hole, laid inside seat clay; The coil pipe that has fin is installed, the peripheral asbestos insulation material that adopts in the coil pipe chamber; Low-pressure liquid nitrogen enters from an end liquid nitrogen import of coil pipe, discharges from another port of export of coil pipe through becoming high pressure nitrogen after the heating.This device liquid nitrogen vaporization discharge capacity is big, has overcome deficiencies such as original armament-related work pressure is not high, service behaviour instability, but its complex structure, at the construction operation scene, there are potential safety hazard in easy breaking out of fire of fuel Heating or blast.
Disclosed Chinese utility model patent on May 13rd, 2009 " heat reclamation type liquid nitrogen vaporization device " (CN201237460Y), the evaporator shell of being made up of forward and backward housing is a heat-exchange device, the coil pipe of installing in the evaporator shell is connected with manifold trunk; The forward and backward coolant water interface tube that is separately installed with of housing.This device is by reclaiming the heat heats coolant of liquid nitrogen car engine radiator and noise damper, refrigerating medium enters housing with certain pressure and flow from the cooling tube interface of housing one end then, discharge from other end interface, coil pipe in the housing is heated, and the flow direction of liquid nitrogen is opposite with the ANALYSIS OF COOLANT FLOW direction in the coil pipe.The liquid nitrogen of the high pressure low temperature of the heat heating that this device utilization is reclaimed has characteristics such as low temperature resistant, high pressure resistant, safe and reliable.In application process, having heat recovery efficiency, low (the maximum evaporation ability is 11327m
3/ h), and the liquid nitrogen pump delivery can reach 31100m
3/ h causes liquid nitrogen vaporization device and liquid nitrogen pump equipment not to match.
Summary of the invention
Low in order to overcome poor safety performance, heat recovery efficiency that existing liquid nitrogen vaporization device exists, cause liquid nitrogen vaporization device and the unmatched deficiency of liquid nitrogen pump equipment, the invention provides a kind of heat reclamation type liquid nitrogen vaporization system.
The technical solution adopted for the present invention to solve the technical problems is: heat reclamation type liquid nitrogen vaporization system is made up of atomising device and heat-exchange device, and the nozzle of atomising device communicates with the heat-exchanging chamber inner chamber of heat-exchange device; The compressed air hose of atomising device is fixedlyed connected with jet pipe, and the front end of jet pipe is a nozzle, and the area of injection orifice of nozzle is less than the cross-sectional area of jet pipe; A siphonal end is communicated with compressed air hose, and the other end is positioned at water tank; Heat-exchange device comprises heat-exchanging chamber, coil pipe assembly, and coil pipe is installed in the heat-exchanging chamber, and a side of heat-exchanging chamber lower end has the thermal medium inlet, and opposite side has leakage fluid dram, and there is steam vent the heat-exchanging chamber upper end.Syphon is positioned at water tank one end strainer is installed; The adjusting bolt radially is installed on the compressed air hose.
The invention has the beneficial effects as follows, rational in infrastructure, can effectively improve the thermal capacitance of heat-exchange device, improve the thermal efficiency; Safe and reliable, be convenient to regulation and control.
Description of drawings
Fig. 1 is a heat reclamation type liquid nitrogen vaporization system architecture schematic diagram of the present invention.
Among the figure: 1. atomising device, 2. heat-exchange device, 3. compressed air hose is 4. regulated bolt, 5. nozzle, 6. jet pipe, 7. syphon, 8. strainer, 9. water tank, 10. steam vent, 11. heat-exchanging chambers, 12. coil pipe assemblies, 13. thermal mediums inlet, 14. leakage fluid drams.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Heat reclamation type liquid nitrogen vaporization of the present invention system is made up of atomising device 1 and heat-exchange device 2, and the nozzle 5 of jet pipe 6 one ends communicates with heat-exchanging chamber 11 inner chambers of heat-exchange device 2 in the atomising device 1.
Heat-exchange device 2 comprises heat-exchanging chamber 11, coil pipe assembly 12, and coil pipe assembly 12 is installed in the heat-exchanging chamber 11; Coil pipe assembly 12 is connected to form by coil pipe and manifold trunk usually, and the coil pipe external surface has fin; An end of coil pipe input low temperature liquid nitrogen in the coil pipe assembly 12, manifold trunk one end is discharged normal temperature nitrogen.Heat-exchanging chamber 11 upper ends one side is communicated with nozzle 5, and opposite side has steam vent 10; One side of heat-exchanging chamber lower end has thermal medium inlet 13, and opposite side has leakage fluid dram 14.
The compressed air hose 3 of atomising device 1 is fixedlyed connected with jet pipe 6, and jet pipe 6 diameters can be fixedlyed connected compressed air hose 3 by connector less than compressed air hose 3 diameters with jet pipe 6.The front end of jet pipe 6 is a nozzle 5, and the area of injection orifice of nozzle 5 is less than the cross-sectional area of jet pipe 6.One end of syphon 7 is communicated with compressed air hose 3, and the other end is positioned at water tank 9, and syphon 7 is vertically placed usually.The end that syphon 7 is positioned at water tank 9 is equipped with strainer 8, can avoid that impurity enters heat reclamation type liquid nitrogen vaporization system in the water.Regulate bolt 4 at the arrival end of compressed air hose 3 with being connected radially to install between the syphon 7, can regulate the atomizing water yield according to the construction operation needs.In order to improve heat exchanger effectiveness, can in water, add other media (as: anticoagulant, anticorrisive agent).
The implementation process of heat reclamation type liquid nitrogen vaporization of the present invention system is,
At first, after assembling atomising device 1 and heat-exchange device 2 respectively and finishing, the compressed air hose 3 and the air compressed gas source of atomising device 1 joined (utilizing liquid nitrogen pump to have source of the gas now usually), the nozzle 5 of jet pipe 6 is communicated with heat-exchanging chamber 11 upper ends of heat-exchange device 2; The thermal medium of heat-exchange device 2 inlet 13 is docked with the noise damper of motor; Leakage fluid dram 14 is communicated with the pond of job site by connecting line.
Then, and conveying compressed air in compressed air hose 3 (pressure 0.3～0.5MPa), the water that syphon 7 is inhaled from water tank 9 atomizes, and sprays to heat-exchanging chamber 11 fast; In heat-exchanging chamber 11, because the noise damper of motor is by 13 butt joints of thermal medium inlet, the temperature of noise damper (200 ℃～300 ℃) promptly is the environment temperature in the heat-exchanging chamber 11, make atomized water heat up rapidly, in this process, fully reclaim the heat in the noise damper, the steam of vaporization fully contacts with coil pipe, makes that the liquid nitrogen in the coil pipe becomes gaseous state by liquid state in flow process; Meanwhile, atomized water is by the steam state liquefy, because the heat of vaporization of water is very high, can improve the heat exchanger effectiveness of liquid nitrogen and ambient medium greatly, also because compressed-air actuated existence, can guarantee that the water vapour in the heat interchanger fully flows and displacement, and then improve the thermal capacitance of heat-exchanging chamber interior media greatly.
Heat reclamation type liquid nitrogen vaporization of the present invention system is by the direct heat exchanged form, and the liquid nitrogen vaporization ability is by original 11327m
3/ h brings up to 23786～31100m
3/ h, simple in structure, easy for installation, be easy to control.
It should be noted that the foregoing description is example and unrestricted the invention, those skilled in the art can design a lot of alternate embodiments and not break away from the scope of claims.
Claims (4)
1. heat reclamation type liquid nitrogen vaporization system, heat-exchange device comprises heat-exchanging chamber, coil pipe assembly, the coil pipe assembly is installed in the heat-exchanging chamber, one side of heat-exchanging chamber lower end has the thermal medium inlet, opposite side has leakage fluid dram, it is characterized in that: heat reclamation type liquid nitrogen vaporization system is made up of atomising device (1) and heat-exchange device (2), and the nozzle (5) of atomising device (1) communicates with heat-exchanging chamber (11) inner chamber of heat-exchange device (2).
2. heat reclamation type liquid nitrogen vaporization according to claim 1 system is characterized in that:
The compressed air hose (3) of described atomising device (1) is fixedlyed connected with jet pipe (6), and the front end of jet pipe (6) is nozzle (5), and the area of injection orifice of nozzle (5) is less than the cross-sectional area of jet pipe (6); One end of syphon (7) is communicated with compressed air hose (3), and the other end is positioned at water tank (9);
There is steam vent (10) heat-exchanging chamber (11) upper end of described heat-exchange device (2).
3. heat reclamation type liquid nitrogen vaporization according to claim 2 system, it is characterized in that: described syphon (7) is positioned at water tank (9) one ends strainer (8) is installed.
4. heat reclamation type liquid nitrogen vaporization according to claim 2 system is characterized in that: radially be equipped with on the described compressed air hose (3) and regulate bolt (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101107953A CN102140903A (en) | 2010-02-03 | 2010-02-03 | Heat recovery type liquid nitrogen evaporation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101107953A CN102140903A (en) | 2010-02-03 | 2010-02-03 | Heat recovery type liquid nitrogen evaporation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102140903A true CN102140903A (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101107953A Pending CN102140903A (en) | 2010-02-03 | 2010-02-03 | Heat recovery type liquid nitrogen evaporation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165033A (en) * | 2013-05-17 | 2014-11-26 | 中国石油天然气集团公司 | Drilling fluid circulating system for nitrogen foam drilling |
-
2010
- 2010-02-03 CN CN2010101107953A patent/CN102140903A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165033A (en) * | 2013-05-17 | 2014-11-26 | 中国石油天然气集团公司 | Drilling fluid circulating system for nitrogen foam drilling |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110803 |