CN102287854B - 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 PDF

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CN102287854B
CN102287854B CN 201110202050 CN201110202050A CN102287854B CN 102287854 B CN102287854 B CN 102287854B CN 201110202050 CN201110202050 CN 201110202050 CN 201110202050 A CN201110202050 A CN 201110202050A CN 102287854 B CN102287854 B CN 102287854B
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liner
cooling
air
chamber
prechamber
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CN102287854A (en )
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关兵
刘殿玺
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关兵
刘殿玺
廉桂南
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Abstract

补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置,涉及一种油田采油设备,包括有预燃室壳体(1)、预燃室内衬(2)、预燃室内衬(3)。 Afterburner formula supercritical pressure liquid fuel combustor generating redundant cooling, to an oilfield apparatus, comprising prechamber housing (1), pre-chamber liner (2), a pre-combustion chamber liner (3). 预燃室壳体(1)与中衬(2)之间形成水冷却套(6),预燃室中衬(2)与内衬(3)之间形成空气冷却套(7),空气冷却套内壁设有多个切向空气喷嘴(8),空气由喷嘴(8)喷出,在内衬(2)接触燃气表面形成连续气膜,冷却预燃室。 Forming a water cooling jacket (6) between the prechamber housing (1) and the liner (2), form an air cooling jacket (7) between the pre-chamber liner (2) and the liner (3), air cooled a plurality of sets of cutting the inner wall of the air discharged from the nozzle (8) to the air nozzle (8), the liner (2) contacting the gas forms a continuous surface of film, cooling the pre-chamber. 冷却水强迫流过水冷却套(6),对空气冷却套内已受热空气进行再生冷却,并对高温燃气实施冗余冷却。 Forced cooling water flowing through the water jacket (6), the air cooled jacket has heated regeneration air is cooled, and the implementation of redundant cooling hot gases. 本发明通过改进设备结构和冷却方式的方法解决了注汽发生器的内衬烧损和毁坏问题。 The present invention solves the liner steam injection burning and destruction of the generator through improved cooling of the apparatus and structure.

Description

补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置 Afterburner combustion chamber redundant cooling supercritical pressure of the fuel gas-generator means

技术领域 FIELD

[0001] 本发明涉及一种油田采油设备,特别是涉及一种补燃式超临界压力注汽发生器〔又称复合热载体发生器〕燃烧室的冗余冷却装置。 [0001] The present invention relates to oilfield equipment, particularly relates to a cooling device for a redundant afterburner supercritical pressure steam injection, also known as complex generator heat carrier generator [] of the combustion chamber.

背景技术 Background technique

[0002] 注汽发生器已在国内大庆、辽河、胜利、新疆等各大油田进行了多年应用,并取得了一定的增油效果,但其使用范围过去主要集中在浅层油藏和高渗透油藏上。 [0002] Note steam generator has been used in China for many years Daqing, Liaohe, Shengli, Xinjiang and other major oil fields, and have achieved certain effects of increasing oil, but its use in the past mainly concentrated in the shallow reservoirs and high permeability reservoir on. 随着油田开发的不断进展,我国现有的复合热载体发生器,如专利98203951.4《旋涡式喷嘴的复合热载体发生器》、98203949.2《复合热载体发生器》、98203950.6《具有气化室的复合热载体发生器》、02231765.1《燃气蒸汽发生器》及200510022594.7《亚临界复合热载体发生器的高温高压燃烧系统》等已无法适应当前油田生产的需要,因此,必须研制更大流量、更高压力的超临界压力注汽发生器。 With the continuous progress of the development of oil fields, of a conventional composite heat carrier generator, as described in patent 98203951.4 "swirl nozzle composite heat carrier generator" 98203949.2 "composite heat carrier generator" 98203950.6 "compound having a gasification chamber, heat carrier generator, "02231765.1" gas-steam generator "and 200,510,022,594.7" high temperature high pressure combustion system subcritical composite heat carrier generator "and has been unable to meet the needs of current oil production, therefore, necessary to develop more traffic, higher pressure supercritical pressure steam injection generator.

[0003] 然而,伴随着注汽发生器流量、压力及温度的提高,又出现了新的亟待解决的技术问题,其中之一就是注汽发生器内衬烧损、毁坏问题。 [0003] However, with the steam injection flow generator, increasing the pressure and temperature, but also the emergence of new technical problem to be solved, one of which is lined with steam injection generator burning, destruction problems.

[0004] 在已公开的发生器设计中,注汽发生器燃烧室的冷却均采用在燃烧室壳体内设置螺旋式或竖条式冷却水套的再生冷却方式,但当发生器燃烧室压力提高,且设备流量大,并连续长期工作时,随着复合热载体温度增高,为使设备掺混用水保持具有一定蒸汽干度的饱和状态,其掺水量将逐渐减少,原有内衬结构已无法满足工作环境的要求,经常出现内衬在火焰前锋处呈环状烧损、毁坏等现象,因而严重影响了注汽发生器在中深层主力油藏的正常使用。 [0004] In the generator design has been disclosed, the injection of cooling steam generator combustion chamber are made of bars or spiral disposed cooling water jacket housing in the combustion chamber regenerative cooling mode, but the generator combustion chamber pressure increase and the device flow, and when the long-term continuous operation, with composite heat carrier temperature increases, so that the device is kept saturated with water with a certain admixture of steam the dryness, mixed with water which will gradually reduce the amount of, the original structure is not the liner meet the requirements of the work environment, often lined with a ring burning, destroyed in the flame front of the phenomenon, which seriously affected the normal use of steam injection generator in the main reservoirs in the deep. 特别是当发生器在超临界压力工作时,因冷却工质水存在大比热区,在此区内其体积随工况变化较大,设备极易发生传热恶化现象,并进而烧毁燃烧室内衬,损坏设备。 Particularly when the generator is operating at a supercritical pressure, due to the presence of large specific heat zone the cooling medium in the water, with the volume of this zone which conditions vary widely, heat deterioration phenomenon prone equipment, thus burning the combustion chamber liner, damage to the device. 因此,必须采取措施减少并控制高温燃气对冷却介质的传热总量,即对现有发生器燃烧室冷却内衬的设计进行实质性突破改进。 Therefore, we must take measures to reduce and control the total amount of high temperature gas cooled heat transfer medium, ie the existing combustor liner cooling generator design substantive breakthrough improvements.

发明内容 SUMMARY

[0005] 本发明的目的在于提供一种补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置,即在改变现有发生器燃烧方式的基础上(将原来集中在燃烧室顶部附近的一次性燃烧分成预燃燃烧及补燃燃烧两个部分),通过改进冷却装置的结构,把原有的单一再生冷却方式改为内衬用空气气膜冷却,中衬用水再生冷却,并且,空气气膜冷却为主,水再生冷却为辅的冗余冷却方式,从而提高内衬冷却效果,延长设备工作寿命。 [0005] The object of the present invention is to provide an ignition generator supercritical pressure liquid fuel combustion apparatus complement redundant cooling, i.e., changing the existing generator on the combustion mode (combustion chamber at the top of the original focus near disposable combustion into the precombustion and combustion afterburner combustion section two), by improving the structure of the cooling device, the reproduction of the original single cooling air to film cooling the liner, the liner regenerative cooling water, and, based film cooling air, cooling water, supplemented by regenerative cooling redundancy, thereby improving the cooling effect of the liner prolong the working life of the device.

[0006] 本发明的目的是通过以下技术方案实现的: [0006] The object of the present invention is achieved by the following technical solution:

[0007] 补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置,由预燃室壳体、预燃室中衬、预燃室内衬构成。 [0007] afterburner formula supercritical pressure liquid fuel combustor generating redundant cooling, the prechamber shell, liner prechamber, the prechamber liner configuration. 其中,预燃室壳体的前后端面采用内锥形(或球形);预燃室中衬和内衬外缘设有多头螺旋槽,且预燃室内衬的内壁上设有多个切向喷嘴;预燃室内衬插装于中衬内孔中,通过尾端焊接(或其它固接方式)连接,可承压密封;预燃室内衬和中衬的焊接组件插装于预燃室壳体中;预燃室内衬与中衬之间形成的螺旋通道构成空气冷却套,预燃室中衬和壳体之间形成的螺旋通道构成水冷却套。 Wherein the front end surface of the prechamber using the tapered inner housing (or spherical); pre-chamber liner and the liner is provided with an outer edge of the long spiral grooves, and is provided with a plurality of tangential to the inner wall of the precombustion chamber liner nozzle; precombustor liner insertion in the bore of the liner, is connected by soldering tail (or other fixed mode), the pressure seal; precombustion chamber liner and the liner welded assembly insertion in the precombustion chamber housing; spiral channel formed between the liner and the liner constituting the air pre-chamber cooling jacket, helical passage is formed between the precombustion chamber and the housing constituting the liner water jacket.

[0008] 所述的补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置,除用于预燃室贫油燃烧所需空气外的其余空气经由冷却空气入口全部进入空气冷却套,由空气冷却套内壁上的多个切向喷嘴喷入预燃室,在空气冷却套内壁上形成连续气膜,并在此过程中吸收燃气中的热量预热自身。 [0008] The afterburner formula supercritical pressure liquid fuel combustor generating redundant cooling means, in addition to the remaining air required for combustion of all the air into the outside air through the cooling jacket of the cooling air inlet for the lean prechamber, a plurality of cooling air tangential to the jacket wall of the nozzle into the precombustion chamber, a continuous gas film is formed in an air cooling jacket wall, and the gas in the preheating heat absorbed in the process itself.

[0009] 所述的补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置,预燃室所需冷却用水全部经由冷却水入口进入水冷却套,对空气冷却套中的受热空气进行再生冷却,并在气膜冷却不佳时,保护预燃室不被损坏。 [0009] The afterburner formula supercritical pressure liquid fuel combustor generating redundant cooling, cooling water needed all the prechamber into the water jacket via the cooling water inlet, the cooling air heated in the air jacket regenerative cooling, and film cooling is poor, the protective pre-chamber is not damaged.

[0010] 本发明的优点与效果是: [0010] The advantages and effects of the present invention are:

[0011] 通过对现有设备烧损毁坏和现象进行观察、分析及计算,本发明改进了设备结构和冷却方式,并以此解决了注汽发生器的内衬烧损问题。 [0011] The existing equipment by burning phenomena and destruction of observation, analysis and calculation, the present invention improves the structure and the cooling device, the liner and steam injection in order to solve the burnout problem generator.

[0012] 1、燃烧室内设置空气冷却套,使用空气进行气膜冷却。 [0012] 1, air cooling jacket disposed in the combustion chamber, air for film cooling.

[0013] 注汽发生器工作过程中,其燃烧所需空气分成两路压入燃烧室内。 [0013] Note steam generator during operation, which is divided into two air required for combustion into the combustion chamber pressure. 其中,一路供给预燃室,直接用于贫油燃烧;另一路供给预燃室空气冷却套,通过设置于其内衬上的多个切向小孔喷入预燃室,在空气冷却套内壁上形成连续气膜。 Wherein all the way to supply pre-chamber, was used directly in the lean combustion; another path for supplying air cooling jacket precombustion chamber, by providing the precombustion chamber to the injection orifices thereon a plurality of cut on the inner liner, the inner wall of the air-cooling jacket continuous gas film is formed. 由于该气膜隔开了高温燃气与内壁,并在流动过程中不断吸收燃气热量,降低了燃气温度和燃气比焓值,因而,提高了保护效果,有效避免了内衬烧损或毁坏。 Since the film is separated from the gas with the inner wall of the hot gas, and gas flow process continue to absorb heat, reducing the gas temperature and gas ratio enthalpy, and thus, the effect of improving the protection, effectively prevent the destruction of the lining or burning. 同时,由于在此过程中对未参与燃烧的空气进行了有效预热,还连带提高了下一步补燃阶段的燃烧效率。 Meanwhile, since this process does not participate in the combustion air was preheated efficiently, but also in an improved combustion efficiency afterburning next stage.

[0014] 气膜冷却的突出特点是在任何条件(包括在超临界压力工作条件)下,都不会像水冷却那样产生传热恶化现象,有效避免了发生器在超临界压力工作条件下因传热恶化造成的烧损或毁坏。 [0014] outstanding feature of film cooling is any condition (including supercritical pressure of the working condition), will not produce a phenomenon as deterioration of water-cooled heat as effectively avoided by the generator at supercritical pressure in the working conditions heat transfer deterioration caused by burning or destroyed.

[0015] 2、空气冷却套外设置水冷却套,形成冗余冷却,避免传热恶化。 [0015] 2, the outer air jacket cooling water jacket provided to form a redundant cooling, to avoid heat deterioration.

[0016] 当发生器工作时,冷却水压入水冷却套,在其螺旋通道内强迫流动,并对空气冷却套内的己受热空气进行再生冷却,从而进一步增强了冷却效果,并形成了冗余冷却。 [0016] When the generator is operated, cooling water into the water cooling jacket, forced in its spiral flow passage, and the heated air has an air-cooled cooling jacket is reproduced, thereby further enhancing the cooling effect, and the formation of redundant cool down. 与此同时,因受接近燃气空气气膜的冷却保护,水冷却套中的再生冷却水温度也得到了有效控制,从而避免了传热恶化现象产生。 At the same time, due to the proximity of the gas-air film cooling protective gas, the regeneration temperature of the cooling water in the water cooling jacket has been effectively controlled, thereby avoiding the deterioration of the heat transfer phenomenon.

附图说明 BRIEF DESCRIPTION

[0017] 图1为本发明的预燃室冷却系统示意图。 [0017] FIG 1 precombustor cooling system of the present invention. FIG.

具体实施方式 Detailed ways

[0018] 下面参照图1对本发明进行详细说明。 [0018] Referring to FIG. 1 of the present invention will be described in detail.

[0019] 补燃式超临界压力燃气液两相燃料注汽发生器燃烧室冗余冷却装置由预燃室壳体1、预燃室中衬2、预燃室内衬3构成。 [0019] afterburner supercritical pressure gas-liquid two-phase steam generator combustion chamber of the fuel injection by the redundant cooling apparatus housing 1 prechamber, the prechamber liner 2, the liner 3 precombustion chamber configuration. 其中,预燃室壳体I的前端面4和后端面10均为内锥形,通过预燃室壳体I上连接法兰螺纹5和法兰螺纹9上的螺纹法兰、双头螺柱及螺母,分别与位于其前后两端的预燃室喷注器壳体及补燃喷注器壳体的球形端面压紧密封。 Wherein the front end face of the precombustion chamber housing 4 and I 10 are the rear end surface tapered, threaded connection flange and the flange 5 on the threads of the threaded flange 9 through the prechamber housing I, stud and a nut, respectively, and the pre-chamber at its front and rear ends and the injector housing afterburner injector housing spherical sealing face pressed. 预燃室中衬2外缘设有多头螺旋槽。 Prechamber long liner 2 is provided with an outer edge of the helical groove. 预燃室内衬3外缘亦设有多头螺旋槽,且其内壁上设有多个切向喷嘴8。 Precombustor liner 3 is also provided with an outer edge of the long spiral grooves, and which is provided with a plurality of tangential nozzle 8 on the inner wall. 预燃室内衬3插装于中衬2内孔中,二者通过尾端焊接连接,并可承压密封。 3 precombustor liner insertion holes in the inner liner 2, the both are connected by soldering the tail end, and the sealing pressure. 预燃室内衬3与中衬2之间构成的螺旋通道为空气冷却套7,预燃室中衬2和壳体I之间构成的螺旋通道为水冷却套6。 Precombustion chamber liner 3 and the configuration of the spiral channel between the liner 2 is an air cooled jacket 7, formed between the pre-chamber liner and the housing 2 I spiral channel 6 a water cooling jacket. 预燃室内衬3和中衬2的焊接组件插装于预燃室壳体I中。 Precombustor liner welded assembly 3 and the liner 2 is inserted in the prechamber mounted in housing I.

[0020] 本发明工作过程: [0020] The working process of the present invention:

[0021] 补燃式超临界压力注汽发生器正常工作时,其燃烧所需空气在预燃喷注器内分成两路,其中一路直接喷入预燃室与所喷入的燃料掺混后进行贫油燃烧;另一路全部进入空气冷却套7,经由空气冷却套内衬3上的多个切向喷嘴8喷入预燃室,在其内壁上形成连续气膜,防止火焰与空气冷却套内壁直接接触,同时,通过这部分空气的掺混吸热,逐步降低燃气温度和燃气比焓值,从而多方位保护内衬结构,综合提高保护效果,进一步避免内衬烧损或毁坏。 After [0021] When the afterburner supercritical steam generator pressure injection work, which is divided into two air required for combustion in the precombustor injector, wherein all the way directly injected into the precombustion chamber and the fuel injected by blending for lean-burn; all the other intake air passage cooling jacket 7, injected via a plurality of air cooling jacket cut on the inner liner 8 to the nozzle 3 precombustion chamber, a continuous gas film is formed on its inner wall, an air cooling jacket prevents flame direct contact with the inner wall, at the same time, by blending the heat absorbing part of the air which gradually reduce the gas temperature and gas ratio enthalpy, so that multi-directional protection lining structure, integrated to improve the protection effect, to further avoid burning or damage to the liner. 另外,由于在此过程中对未参与燃烧的空气进行了有效预热,连带提高了下一步补燃阶段的燃烧效率。 Further, since the process does not participate in the combustion air is preheated effectively, resulting in an improved combustion efficiency afterburning next stage.

[0022] 为进一步提高预燃室的冷却效果,增强安全防护,在上述空气冷却套7的外表面又增设了水冷却套6,对其进行再生冷却。 [0022] In order to further enhance the cooling effect of the pre-chamber, to enhance security, the outer surface of the air-cooling jacket 7 and the addition of the water jacket 6, subjected to regenerative cooling. 当发生器工作时,冷却水进入预燃室水冷却套6,在螺旋形通道中强迫流动,并对空气冷却套中的受热空气进行冷却,以进一步增强冷却效果,同时,一旦气膜冷却不佳时,通过再生冷却进行冗余保护,以确保设备安全完好。 When the generator is operating, the cooling water into the pre-chamber water jacket 6, a forced flow in the helical passage, and the air heated in the cooling jacket cools the air, to further enhance the cooling effect, while, once the film cooling is not when good, redundant protection by regenerative cooling, in order to ensure the integrity of the security device.

Claims (1)

  1. 1.补燃式超临界压力气液燃料发生器燃烧室冗余冷却装置,由预燃室壳体、预燃室中衬、预燃室内衬构成,其特征在于,预燃室壳体(I)的前后端面采用内锥形;预燃室中衬(2)和内衬(3)外缘设有多头螺旋槽,且预燃室内衬(3)的内壁上设有多个切向喷嘴(8);预燃室内衬(3)插装于中衬(2)内孔中,采用尾端焊接或其它方式固接,为承压密封状;预燃室内衬⑶和中衬⑵的焊接组件插装于预燃室壳体(I)中;预燃室内衬⑶与中衬⑵之间形成螺旋通道,构成空气冷却套,预燃室中衬(2)和壳体(I)之间形成螺旋通道,构成水冷却套;用于预燃室贫油燃烧所需空气外的其余空气经冷却空气入口全部进入空气冷却套(7),由空气冷却套内壁上的多个切向喷嘴(8)喷入预燃室,在空气冷却套内壁上形成连续气膜,并在此过程中吸收燃气中的热量预热自身;预燃室所需冷却用水全部经 1. afterburner formula supercritical pressure liquid fuel combustor generating redundant cooling, the prechamber shell, liner prechamber, the prechamber liner configuration, characterized in that the prechamber housing ( I) using the tapered inner end surface of front and rear; liner (2) and the liner (3) is provided with an outer edge of the long helical groove precombustion chamber and tangential to the inner wall is provided with a plurality of precombustion chamber liner (3) a nozzle (8); precombustor liner (3) in the insertion sleeve (2) in the bore, the trailing end using welding or other means are fixedly connected to form the sealing pressure; ⑶ precombustion chamber liner and the liner ⑵ welded assembly insertion in the prechamber housing (I); forming prechamber between the liner and the liner ⑵ ⑶ spiral passage, constituting an air cooling jacket liner prechamber (2) and the housing ( formed between I) the spiral channel, constituting the water cooling jacket; remaining air required for the combustion air inlet through the external cooling air entering the entire air cooling jacket (7) lean pre-chamber, a plurality of air-cooled jacket wall tangential nozzle (8) is injected into the precombustion chamber, a continuous gas film is formed in an air cooling jacket wall, and the gas in the preheating heat absorbed in this process itself; all of the required cooling water through the pre-chamber 冷却水入口进入水冷却套(6),对空气冷却套(7)中的受热空气进行再生冷却。 Cooling water inlet into the water cooling jacket (6), of the heated air (7) air cooling jacket cooled regenerated.
CN 201110202050 2011-07-19 2011-07-19 Afterburning-type supercritical-pressure gas-liquid fuel-generator combustion-chamber redundancy-cooling device CN102287854B (en)

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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 Steam and gas 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
US20110000666A1 (en) 2008-03-19 2011-01-06 Heraldo Da Silva Couto Vitiated Steam Generator

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US7712528B2 (en) * 2006-10-09 2010-05-11 World Energy Systems, Inc. Process for dispersing nanocatalysts into petroleum-bearing formations

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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 Steam and gas 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
US20110000666A1 (en) 2008-03-19 2011-01-06 Heraldo Da Silva Couto Vitiated Steam Generator

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