CN102287854A - Afterburning-type supercritical-pressure gas-liquid fuel-generator combustion-chamber redundancy-cooling device - Google Patents
Afterburning-type supercritical-pressure gas-liquid fuel-generator combustion-chamber redundancy-cooling device Download PDFInfo
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- CN102287854A CN102287854A CN2011102020504A CN201110202050A CN102287854A CN 102287854 A CN102287854 A CN 102287854A CN 2011102020504 A CN2011102020504 A CN 2011102020504A CN 201110202050 A CN201110202050 A CN 201110202050A CN 102287854 A CN102287854 A CN 102287854A
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Abstract
The invention relates to an afterburning-type supercritical-pressure gas-liquid fuel-generator combustion-chamber redundancy-cooling device, which relates to oilfield oil-production equipment and comprises a precombustion-chamber shell (1), a precombustion-chamber middle lining (2) and a precombustion-chamber inside lining (3). A water-cooling sleeve (6) is formed between the precombustion-chamber shell (1) and the middle lining (2), an air-cooling sleeve (7) is formed between the precombustion-chamber middle lining (2) and the inside lining (3), the inner wall of the air-cooling sleeve is provided with a plurality of tangential air nozzles (8), and air is sprayed out from the nozzles (8) and contacted with the surface of fuel gas on the inside lining to form a continuous air film to cool a precombustion chamber. Cooling water is forced to flow through the water-cooling sleeve (6) to carry out regenerative cooling for the heated air in the air-cooling sleeve and implement redundancy cooling for the high-temperature fuel gas. In the invention, the burning-loss and damage problems of the inside lining of a steam-injecting generator are solved by a method of improving an equipment structure and a cooling mode.
Description
Technical field
The present invention relates to a kind of oil field equipment, particularly relate to the redundant cooling device that a kind of compensation combustion type supercritical pressure is annotated vapour generator (claiming composite heat carrier generator again) combustion chamber.
Background technology
Annotate each elephant such as vapour generator grand celebration at home, the Liaohe River, triumph, Xinjiang and carried out using for many years, and obtained certain oil increasing effect, but its scope of application mainly concentrates on shallow-layer oil reservoir and the high infiltration oil reservoir in the past.Continuous progress along with oil field development, the existing composite heat carrier generator of China, as patent 98203951.4 " composite heat carrier generator of swirl atomizer ", " 98203949.2 composite heat carrier generator ", " 98203950.6 composite heat carrier generator " with vaporizer, 02231765.1 " gas steam generator " and 200510022594.7 " high-temperature high-pressure combustion system of sub-critical composite heat carrier generator " etc. can't adapt to the needs of current field produces, therefore, must develop bigger flow, more the supercritical pressure of high pressure is annotated vapour generator.
Yet, follow the raising of show loving care for vapour generator flow, pressure and temperature, the new technical problem that needs to be resolved hurrily has appearred again, and one of them annotates vapour generator liner scaling loss, breaking-up problem exactly.
In disclosed generator design, annotate the cooling of vapour generator combustion chamber and all adopt the regeneration type of cooling that spiral or rod-type cooling jacket are set in burning chamber shell, but when the generator chamber pressure improves, and the equipment flow is big, and continuously during long-term work, along with the composite heat carrier increase in temperature, for making equipment blending water keep having the saturation state of certain steam quality, its watering quantity will reduce gradually, original inner lining structure can't satisfy the requirement of working environment, often occur liner at the flame front place scaling loss in the form of a ring, phenomenons such as breaking-up, thereby had a strong impact on of the normal use of notes vapour generator at mid-deep strata main force oil reservoir.Particularly when generator when supercritical pressure is worked, because of cooling working medium water exists greatly than the hot-zone, its volume is bigger with working conditions change in this district, the heat transfer deterioration phenomenon very easily takes place in equipment, and and then burns combustion chamber liner, damage equipment.Therefore, must take measures to reduce and control the heat transfer total amount of high-temperature fuel gas, promptly substantive breakthroughs be carried out in the design of existing generator combustion chamber cooling liner and improved cooling medium.
Summary of the invention
The object of the present invention is to provide the redundant cooling device in a kind of compensation combustion type supercritical pressure gas-liquid fuels generator combustion chamber, promptly (will concentrate near the top of combustion chamber disposable burning originally and be divided into pre-burning burning and afterburning two parts of burning) on the basis that changes existing generator combustion system, by improving the structure of cooling device, original single regeneration type of cooling is changed into liner to be cooled off with the air air film, middle lining cools off with water reuse (treatment, and, the air air film is cooled to the master, water reuse (treatment is cooled to the auxilliary redundant type of cooling, thereby improve the liner cooling effect, prolong service life of structure.
The objective of the invention is to be achieved through the following technical solutions:
The redundant cooling device in compensation combustion type supercritical pressure gas-liquid fuels generator combustion chamber is made of lining, precombustion chamber liner in precombustion chamber housing, the precombustion chamber.Wherein, the front/rear end of precombustion chamber housing adopts inner conical (or spherical); Lining and liner outer rim are provided with multi-head spiral groove in the precombustion chamber, and the inwall of precombustion chamber liner is provided with a plurality of tangential nozzles; During being plugged in, the precombustion chamber liner in the lining endoporus, connects by tail end welding (or other affixed mode), but pressure bearing and seal; The weld assembly of precombustion chamber liner and middle lining is plugged in the precombustion chamber housing; The helical duct that forms between precombustion chamber liner and the middle lining constitutes cooling air jacket, and the helical duct that forms between lining and the housing in the precombustion chamber constitutes water(-cooling) jacket.
The redundant cooling device in described compensation combustion type supercritical pressure gas-liquid fuels generator combustion chamber, remaining air except that being used for precombustion chamber poor oil firing required air all enters cooling air jacket via cooling air intake, spray into precombustion chamber by a plurality of tangential nozzle on the cooling air jacket inwall, on the cooling air jacket inwall, form continuous air film, and in this process, absorb the heat preheating self in the combustion gas.
The redundant cooling device in described compensation combustion type supercritical pressure gas-liquid fuels generator combustion chamber; the required cooling water of precombustion chamber all enters water(-cooling) jacket via the cooling water inlet; to the cooling of regenerating of the heated air in the cooling air jacket; and when the air film cooling was not good, the protection precombustion chamber was not damaged.
Advantage of the present invention and effect are:
By breaking-up of existing equipment scaling loss and phenomenon are observed, analyzed and calculate, the present invention has improved the device structure and the type of cooling, and has solved the liner burning problems of annotating vapour generators with this.
1, in the combustion chamber cooling air jacket is set, uses air to carry out the air film cooling.
Annotate in the vapour generator course of work, its burning required air is divided into two-way and is pressed in the combustion chamber.Wherein, the one road supplies with precombustion chamber, is directly used in poor oil firing; The precombustion chamber cooling air jacket is supplied with on another road, sprays into precombustion chamber by a plurality of tangential small-holes that are arranged on its liner, forms continuous air film on the cooling air jacket inwall.Because this air film has separated high-temperature fuel gas and inwall, and in flow process, constantly absorb fuel gas calorie, reduced fuel gas temperature and combustion gas than enthalpy, thereby, improved the protection effect, effectively avoided liner scaling loss or breaking-up.Simultaneously, owing in this process, the air that has neither part nor lot in burning has been carried out effective preheating, the also related efficiency of combustion that improves next step afterburning stage.
The outstanding feature of air film cooling is under any condition (being included in the supercritical pressure condition of work), can as water cooling, not produce the heat transfer deterioration phenomenon, scaling loss or the breaking-up of effectively having avoided generator under the supercritical pressure condition of work, to cause because of heat transfer deterioration.
2, cooling air jacket is provided with water(-cooling) jacket outward, forms redundant cooling, avoids heat transfer deterioration.
When generator was worked, cooling water pressure was gone into water(-cooling) jacket, forced mobilely in its helical duct, and to the cooling of regenerating of the own heated air in the cooling air jacket, thereby had further strengthened cooling effect, and had formed redundant cooling.Meanwhile, because of being subjected to the cooling protection near the gas-air air film, the regeneration cooling water temperature in the water(-cooling) jacket has also obtained effective control, thereby has avoided the heat transfer deterioration phenomenon to produce.
Description of drawings
Fig. 1 is a precombustion chamber cooling system schematic diagram of the present invention.
The specific embodiment
The present invention is described in detail below with reference to Fig. 1.
Compensation combustion type supercritical pressure combustion gas liquid two-phase fuel annotate the redundant cooling device in vapour generator combustion chamber by serve as a contrast 2 in precombustion chamber housing 1, the precombustion chamber, precombustion chamber liner 3 constitutes.Wherein, the front end face 4 and the rear end face 10 of precombustion chamber housing 1 are inner conical, by screwed flange, the stud bolt an nut on adpting flange screw thread 5 on the precombustion chamber housing 1 and the flange screw thread 9, the spherical end surface with precombustion chamber ejector filler housing that is positioned at its rear and front end and afterburning ejector filler housing compresses sealing respectively.Lining 2 outer rims are provided with multi-head spiral groove in the precombustion chamber.Precombustion chamber liner 3 outer rims also are provided with multi-head spiral groove, and its inwall is provided with a plurality of tangential nozzles 8.In lining 2 endoporus, the two was welded to connect by tail end during precombustion chamber liner 3 was plugged in, but and pressure bearing and seal.The helical duct that constitutes between precombustion chamber liner 3 and the middle lining 2 is a cooling air jacket 7, and the helical duct that constitutes between lining 2 and the housing 1 in the precombustion chamber is a water(-cooling) jacket 6.The weld assembly of precombustion chamber liner 3 and middle lining 2 is plugged in the precombustion chamber housing 1.
The course of work of the present invention:
When the compensation combustion type supercritical pressure was annotated the vapour generator operate as normal, its burning required air was divided into two-way in the pre-burning ejector filler, and wherein one the tunnel carries out poor oil firing after directly spraying into precombustion chamber and the fuel blending that is sprayed into; Another road all enters cooling air jacket 7; spray into precombustion chamber via a plurality of tangential nozzle 8 on the cooling air jacket liner 3; form continuous air film within it on the wall; prevent that flame from directly contacting with the cooling air jacket inwall, simultaneously, by the blending heat absorption of this part air; progressively reduce fuel gas temperature and combustion gas and compare enthalpy; thereby multi-faceted protection inner lining structure, the comprehensive protection effect that improves is further avoided liner scaling loss or breaking-up.In addition, owing in this process, the air that has neither part nor lot in burning has been carried out effective preheating, the related efficiency of combustion that improves next step afterburning stage.
For further improving the cooling effect of precombustion chamber, strengthen security protection, set up water(-cooling) jacket 6 again at the outer surface of above-mentioned cooling air jacket 7, to its cooling of regenerating.When generator is worked; cooling water enters precombustion chamber water(-cooling) jacket 6; in spirality channel, force mobile; and the heated air in the cooling air jacket cooled off; with further enhancing cooling effect, simultaneously, in case when air film cooling is not good; carry out redundancy protecting by the regeneration cooling, intact to guarantee device security.
Claims (3)
1. the redundant cooling device in compensation combustion type supercritical pressure gas-liquid fuels generator combustion chamber is made of lining, precombustion chamber liner in precombustion chamber housing, the precombustion chamber, it is characterized in that the front/rear end of precombustion chamber housing (1) adopts inner conical; Lining (2) and liner (3) outer rim are provided with multi-head spiral groove in the precombustion chamber, and the inwall of precombustion chamber liner (3) is provided with a plurality of tangential nozzles (8); Precombustion chamber liner (3) is plugged in middle lining (2) endoporus, adopts tail end welding or alternate manner affixed, is the pressure bearing and seal shape; The weld assembly of precombustion chamber liner (3) and middle lining (2) is plugged in the precombustion chamber housing (1); Form helical duct between precombustion chamber liner (3) and the middle lining (2), constitute cooling air jacket, form helical duct between lining (2) and the housing (1) in the precombustion chamber, constitute water(-cooling) jacket.
2. the redundant cooling device in compensation combustion type supercritical pressure gas-liquid fuels generator according to claim 1 combustion chamber, it is characterized in that, be used for the outer remaining air of precombustion chamber poor oil firing required air and all enter cooling air jacket (7) through cooling air intake, spray into precombustion chamber by a plurality of tangential nozzle (8) on the cooling air jacket inwall, on the cooling air jacket inwall, form continuous air film, and in this process, absorb the heat preheating self in the combustion gas.
3. the redundant cooling device in compensation combustion type supercritical pressure gas-liquid fuels generator according to claim 1 combustion chamber, it is characterized in that, the required cooling water of precombustion chamber all enters water(-cooling) jacket (6) via the cooling water inlet, to the cooling of regenerating of the heated air in the cooling air jacket (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110202050 CN102287854B (en) | 2011-07-19 | 2011-07-19 | Afterburning-type supercritical-pressure gas-liquid fuel-generator combustion-chamber redundancy-cooling device |
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| CN 201110202050 CN102287854B (en) | 2011-07-19 | 2011-07-19 | Afterburning-type supercritical-pressure gas-liquid fuel-generator combustion-chamber redundancy-cooling device |
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| CN102287854A true CN102287854A (en) | 2011-12-21 |
| CN102287854B CN102287854B (en) | 2013-06-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074387A (en) * | 2021-04-29 | 2021-07-06 | 北京航空航天大学 | Regenerative cooling channel with truss structure |
| CN114877377A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Outer ring detonation combustion chamber |
| CN114877377B (en) * | 2022-06-02 | 2024-05-14 | 清航空天(北京)科技有限公司 | Outer ring detonation combustor |
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| EP0051127A2 (en) * | 1980-11-03 | 1982-05-12 | Rockwell International Corporation | Direct firing downhole steam generator |
| CN2391010Y (en) * | 1999-08-23 | 2000-08-09 | 付玉峰 | Gas steam generator |
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| CN1804366A (en) * | 2005-12-23 | 2006-07-19 | 江苏大江石油科技有限公司 | High-temperature high-pressure combustion system of sub-critical composite heat carrier generator |
| US20080217008A1 (en) * | 2006-10-09 | 2008-09-11 | Langdon John E | Process for dispersing nanocatalysts into petroleum-bearing formations |
| US20110000666A1 (en) * | 2008-03-19 | 2011-01-06 | Heraldo Da Silva Couto | Vitiated Steam Generator |
| US20110214858A1 (en) * | 2010-03-08 | 2011-09-08 | Anthony Gus Castrogiovanni | Downhole steam generator and method of use |
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2011
- 2011-07-19 CN CN 201110202050 patent/CN102287854B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0051127A2 (en) * | 1980-11-03 | 1982-05-12 | Rockwell International Corporation | Direct firing downhole steam generator |
| CN2391010Y (en) * | 1999-08-23 | 2000-08-09 | 付玉峰 | Gas steam generator |
| CN2769700Y (en) * | 2004-12-29 | 2006-04-05 | 杨文俊 | Multifunction high pressure efficient combustion device |
| CN1804366A (en) * | 2005-12-23 | 2006-07-19 | 江苏大江石油科技有限公司 | High-temperature high-pressure combustion system of sub-critical composite heat carrier generator |
| US20080217008A1 (en) * | 2006-10-09 | 2008-09-11 | Langdon John E | Process for dispersing nanocatalysts into petroleum-bearing formations |
| US20110000666A1 (en) * | 2008-03-19 | 2011-01-06 | Heraldo Da Silva Couto | Vitiated Steam Generator |
| US20110214858A1 (en) * | 2010-03-08 | 2011-09-08 | Anthony Gus Castrogiovanni | Downhole steam generator and method of use |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074387A (en) * | 2021-04-29 | 2021-07-06 | 北京航空航天大学 | Regenerative cooling channel with truss structure |
| CN114877377A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Outer ring detonation combustion chamber |
| CN114877377B (en) * | 2022-06-02 | 2024-05-14 | 清航空天(北京)科技有限公司 | Outer ring detonation combustor |
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| CN102287854B (en) | 2013-06-12 |
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