WO2022227582A1 - Combustion chamber structure having heat exchanger - Google Patents
Combustion chamber structure having heat exchanger Download PDFInfo
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- WO2022227582A1 WO2022227582A1 PCT/CN2021/136252 CN2021136252W WO2022227582A1 WO 2022227582 A1 WO2022227582 A1 WO 2022227582A1 CN 2021136252 W CN2021136252 W CN 2021136252W WO 2022227582 A1 WO2022227582 A1 WO 2022227582A1
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- WIPO (PCT)
- Prior art keywords
- wall
- heat exchanger
- guide
- flame tube
- flue gas
- Prior art date
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 60
- 238000002347 injection Methods 0.000 claims abstract description 67
- 239000007924 injection Substances 0.000 claims abstract description 67
- 239000003546 flue gas Substances 0.000 claims description 59
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 58
- 239000007789 gas Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 abstract description 7
- 230000008646 thermal stress Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/283—Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/58—Cyclone or vortex type combustion chambers
Definitions
- FIG. 10 is a schematic structural diagram of the cold runner and the hot runner described in part of the present invention.
- Fig. 14 is the structural representation of the flame tube of the present invention.
- the spiral angle of the first variable flow channel section 1334 and the second variable flow channel section 1344 is 2°, that is, the first spiral flow channel 1333 is composed of 180 sections of the first variable flow channel section 1334, and the first variable flow channel section 1334 is composed of 180 sections.
- the second helical flow channel 1343 is composed of 180 sections of the second variable flow channel section 1344; the greater the number of the first variable flow channel section 1334 and the second variable flow channel section 1344, that is, the more changes in the cross section of the flow channel, Its resistance to thermal expansion and contraction and heat transfer is better.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A combustion chamber structure having a heat exchanger (1), comprising the heat exchanger (1) and a combustion liner (2) embedded into the heat exchanger (1). The heat exchanger (1) comprises a heat exchanger inner wall (11) and a heat exchanger outer wall (12), and a heat exchange portion (13) is provided between the heat exchanger inner wall (11) and the heat exchanger outer wall (12); the combustion liner (2) comprises a combustion liner inner wall (21), a combustion liner outer wall (22), and a combustion liner bottom plate (23); an oil spray ring (14), oil spray openings (141), and a second oil injection pipe (144) are provided on the heat exchanger inner wall (11); a first oil injection pipe (142) is provided on the heat exchange portion (13); an oil injection port (143) is formed on the heat exchanger outer wall (12); guide pipes (222) are provided on the combustion liner outer wall (22); the guide pipes (222) are sleeved on the oil spray openings (141), and oil sprayed out enters the combustion liner (2) directly by means of the guide pipes (222), thereby ensuring that all oil enters the combustion liner (2) to participate in combustion and combustion occurs only in the combustion liner (2); the first oil injection pipe (142) is fixed onto the heat exchange portion (13) in a multi-point spaced fixed manner, thereby preventing the temperature gradient of the heat exchange portion (13) from causing the first oil injection pipe (142) to be pulled and broken under the action of thermal stress.
Description
本发明涉及燃烧室领域，具体涉及一种具有换热器的燃烧室结构。The invention relates to the field of combustion chambers, in particular to a combustion chamber structure with a heat exchanger.
燃气涡轮是一种广泛应用于航空、船舶、电力等诸多工业领域的动力机械，在国民经济的发展中起到至关重要的作用。燃气涡轮与其他相比具有很多优点，在燃料消耗率，噪音，排放，振动方面均有巨大优势，不仅可用于传统的分布式发电，而且可用于并网发电等多种发电方式，其不仅在城市适用，而且在偏远地区凭借携带方便工作可靠的优点也得到广泛推广；除了海陆边防等交通运输上，燃气涡轮在新能源汽车、机电加工，金属材料等多领域均有应用，因此备受各军事大国的关注。Gas turbine is a kind of power machinery widely used in aviation, ships, electric power and many other industrial fields, and plays a vital role in the development of national economy. Compared with others, gas turbines have many advantages. They have great advantages in fuel consumption rate, noise, emission and vibration. They can be used not only for traditional distributed generation, but also for grid-connected power generation and other power generation methods. It is suitable for cities, and has been widely promoted in remote areas due to its advantages of easy portability and reliable work; in addition to transportation such as sea and land border defense, gas turbines are used in many fields such as new energy vehicles, electromechanical processing, and metal materials. The attention of military powers.
传统的燃气涡轮还具有以下不足：Conventional gas turbines also have the following disadvantages:
1、注油管贴在换热器壁面上，油管与换热器壁面接触，但换热器壁面上具有温度梯度，导致注油管在热应力作用下受拉破裂；1. The oil injection pipe is attached to the wall of the heat exchanger, and the oil pipe is in contact with the wall of the heat exchanger, but there is a temperature gradient on the wall of the heat exchanger, which causes the oil injection pipe to be pulled and ruptured under the action of thermal stress;
2、从涡轮流出的高温气体直接排放到大气环境，造成了能量的浪费，从而造成整机热效率不高。同时进入燃烧室的空气温度较低，燃烧室的温升也不高，影响气流的后续做功能力；2. The high-temperature gas flowing out of the turbine is directly discharged into the atmospheric environment, resulting in a waste of energy, resulting in low thermal efficiency of the whole machine. At the same time, the temperature of the air entering the combustion chamber is low, and the temperature rise of the combustion chamber is not high, which affects the subsequent working ability of the airflow;
3、燃烧室由于空间小，气流在火焰筒内停留时间短，造成火焰筒内燃烧组织不好，局部温度过高还容易引起局部过高的热应力，造成火焰筒变形损坏。3. Due to the small space of the combustion chamber, the air flow stays in the flame tube for a short time, resulting in poor combustion structure in the flame tube, and the local temperature is too high, which is easy to cause local high thermal stress, resulting in deformation and damage of the flame tube.
基于上述情况，本发明提出了一种具有换热器的燃烧室结构，可有效解决以上问题。Based on the above situation, the present invention proposes a combustion chamber structure with a heat exchanger, which can effectively solve the above problems.
本发明的目的在于提供一种具有换热器的燃烧室结构。本发明的具有换热器的燃烧室结构，通过喷油环作为油路的中转站，稳定油压，再统一从喷油嘴喷出，确保较好的注油效果；且喷油嘴外套设有导向管，确保喷出的油直接通过导向管进入火焰筒内，确保油全部进入火焰筒参与燃烧，并且没有油渗出，确保燃烧只发生在火焰筒中；第一注油管采用多点间隔固定的方式固定在换热部上，避免换热部的温度不一致而导致第一注油管在热应力的作用下受拉破裂。The object of the present invention is to provide a combustion chamber structure with a heat exchanger. In the combustion chamber structure with heat exchanger of the present invention, the oil injection ring is used as the transfer station of the oil circuit to stabilize the oil pressure, and then uniformly sprays out from the oil injection nozzle to ensure better oil injection effect; and the outer casing of the oil injection nozzle is provided with The guide tube ensures that the sprayed oil directly enters the flame tube through the guide tube, ensures that all the oil enters the flame tube to participate in the combustion, and no oil seeps out, and ensures that the combustion only occurs in the flame tube; the first oil injection tube adopts multi-point fixed intervals. It is fixed on the heat exchange part in such a way that the temperature of the heat exchange part is not inconsistent and the first oil injection pipe is pulled and ruptured under the action of thermal stress.
本发明通过下述技术方案实现：The present invention is achieved through the following technical solutions:
一种具有换热器的燃烧室结构，包括换热器和嵌设在所述换热器内的火焰筒；A combustion chamber structure with a heat exchanger, comprising a heat exchanger and a flame tube embedded in the heat exchanger;
所述换热器包括换热器内壁和换热器外壁，且在所述换热器内壁和换热器外壁之间设有换热部；The heat exchanger includes an inner wall of the heat exchanger and an outer wall of the heat exchanger, and a heat exchange part is arranged between the inner wall of the heat exchanger and the outer wall of the heat exchanger;
所述火焰筒包括火焰筒内壁、火焰筒外壁和火焰筒底板，且所述火焰筒内壁、火焰筒外壁和火焰筒底板之间形成气体流动腔体；The flame tube includes a flame tube inner wall, a flame tube outer wall and a flame tube bottom plate, and a gas flow cavity is formed between the flame tube inner wall, the flame tube outer wall and the flame tube bottom plate;
所述换热器内壁的内侧固定有喷油环，所述喷油环靠近所述火焰筒底板的一侧环设有多个喷油嘴；所述换热部靠近所述火焰筒底板的一侧设有第一注油管；所述第一注油管的一端贯穿所述换热器外壁，并在所述换热器外壁上形成注油口；所述第一注油管的另一端与所述喷油环通过嵌设在所述换热器内壁内的第二注油管相互连通；所述第一注油管包括多组依次交替连接的上凸段和下凹段，下凹段固定在所述换热部上，上凸段架空在所述换热部上；An oil injection ring is fixed on the inner side of the inner wall of the heat exchanger, and a plurality of oil injection nozzles are arranged on the side of the oil injection ring close to the bottom plate of the flame cylinder; the heat exchange part is close to a bottom of the flame cylinder bottom plate. A first oil injection pipe is provided on the side; one end of the first oil injection pipe penetrates the outer wall of the heat exchanger, and an oil injection port is formed on the outer wall of the heat exchanger; the other end of the first oil injection pipe is connected with the injection The oil rings are communicated with each other through a second oil injection pipe embedded in the inner wall of the heat exchanger; the first oil injection pipe includes a plurality of sets of upper convex sections and lower concave sections which are alternately connected in sequence, and the lower concave sections are fixed on the On the heat part, the upper convex section is overhead on the heat exchange part;
所述火焰筒外壁上环设有若干个与所述喷油嘴对应的导向管，且所述导向管套设在所述喷油嘴上。A plurality of guide pipes corresponding to the fuel injection nozzles are arranged on the outer wall of the flame cylinder, and the guide pipes are sleeved on the fuel injection nozzles.
本发明通过所述喷油环作为油路的中转站，稳定油压，再统一从所述喷油嘴喷出，确保较好的注油效果；且所述喷油嘴外套设有所述导向管，确保喷出的油直接通过所述导向管进入所述火焰筒内，确保油全部进入所述火焰筒参与燃烧，并且没有油渗出，确保燃烧只发生在所述火焰筒中；所述第一注油管采用多点间隔固定的方式固定在所述换热部上，避免所述换热部的温度不一致而导致所述第一注油管在热应力的作用下受拉破裂。In the present invention, the oil injection ring is used as the transfer station of the oil circuit to stabilize the oil pressure, and then uniformly spray out from the oil injection nozzle to ensure a better oil injection effect; and the outer casing of the oil injection nozzle is provided with the guide pipe , to ensure that the sprayed oil directly enters the flame tube through the guide tube, to ensure that all the oil enters the flame tube to participate in combustion, and no oil seeps out, to ensure that combustion only occurs in the flame tube; the first The oil injection pipe is fixed on the heat exchange part by means of fixed intervals at multiple points, so as to prevent the first oil injection pipe from being pulled and ruptured under the action of thermal stress due to inconsistent temperatures of the heat exchange part.
优选的，所述换热器内壁的一侧的内壁上等距环设有多个空气出口，且每个所述空气出口在所述换热器内壁内开设空气出气腔；所述换热器内壁的另一侧的内壁上等距环设有多个烟气入口，且每个所述烟气入口在所述换热器内壁内开设烟气进气腔；所述换热器内壁在设有所述烟气入口的一侧还设有用于引导烟气流向的挡板。Preferably, the inner wall of one side of the inner wall of the heat exchanger is provided with a plurality of air outlets in an equidistant ring, and each of the air outlets is provided with an air outlet cavity in the inner wall of the heat exchanger; the heat exchanger The inner wall on the other side of the inner wall is provided with a plurality of flue gas inlets in an equidistant ring, and each of the flue gas inlets is provided with a flue gas intake cavity in the inner wall of the heat exchanger; A baffle plate for guiding the flow of the flue gas is also provided on the side with the flue gas inlet.
优选的，所述换热器外壁内侧对应多个所述空气出口设有多个凸块，所述凸块背离所述空气出口的一端设有空气入口，且每个所述空气入口在所述凸块内开设空气进气腔；所述换热器外壁、换热部和多个所述凸块构成多个烟气出气腔。Preferably, the inner side of the outer wall of the heat exchanger is provided with a plurality of protrusions corresponding to the plurality of air outlets, the end of the protrusions facing away from the air outlet is provided with an air inlet, and each of the air inlets is located at the end of the air outlet. Air intake cavities are set in the bumps; the outer wall of the heat exchanger, the heat exchange part and a plurality of the bumps form a plurality of flue gas outlet cavities.
优选的，所述换热部内设有数量相等的冷流道组和热流道组；所述冷流道组和热流道组在所述换热部的圆周方向上交替等距设置；每个所述冷流道组包括在竖直方向上并列设置的多个冷流道，所述冷流道为螺旋状流道，每个所述冷流道均与所述空气进气腔和空气出气腔连通；每个所述热流道组包括在竖直方向上并列设置的多个热流道，所述热流道为螺旋状流道，每个所述热流道均与所述烟气进气腔和烟气出气腔连通。Preferably, the heat exchange part is provided with an equal number of cold runner groups and hot runner groups; the cold runner groups and the hot runner groups are alternately arranged at equal distances in the circumferential direction of the heat exchange part; each The cold runner group includes a plurality of cold runners arranged in parallel in the vertical direction, the cold runners are helical runners, and each of the cold runners is connected to the air inlet cavity and the air outlet. Each of the hot runner groups includes a plurality of hot runners arranged in parallel in the vertical direction, the hot runners are helical runners, and each of the hot runners is connected to the flue gas inlet cavity and the flue gas inlet cavity. The flue gas outlet cavity is communicated.
优选的，每个所述冷流道的螺旋角度均为360°；所述冷流道包括连通至所述空气进气腔的空气进气弯头、连通至所述空气出气腔的空气出气弯头和连接所述空气进气弯头和空气出气弯头的第一螺旋流道；所述第一螺旋流道由多个第一变化流道段连接而成；所述第一变化流道段两端的截面为圆形，所述第一变化流道段中央的截面呈正方形；Preferably, the helix angle of each of the cold runners is 360°; the cold runner includes an air intake elbow connected to the air intake cavity, and an air outlet elbow connected to the air outlet cavity a first spiral flow channel connecting the air intake elbow and the air outlet elbow; the first spiral flow channel is formed by connecting a plurality of first variable flow channel segments; the first variable flow channel segments The cross-sections at both ends are circular, and the cross-section at the center of the first variable flow channel segment is square;
每个所述热流道的螺旋角度均为360°；所述热流道包括连通至所述烟气进气腔的烟气进气弯头、连通至所述烟气出气腔的烟气出气弯头和连接所述烟气进气弯头和烟气出气弯头的第二螺旋流道；所述第二螺旋流道由多个第二变化流道段连接而成；所述第二变化流道段两端的截面为圆形，所述第二变化流道段中央的截面呈正方形；The spiral angle of each of the hot runners is 360°; the hot runner includes a flue gas intake elbow connected to the flue gas intake cavity, and a flue gas outlet elbow connected to the flue gas outlet cavity and a second spiral flow channel connecting the flue gas inlet elbow and the flue gas outlet elbow; the second spiral flow channel is formed by connecting a plurality of second variable flow channel segments; the second variable flow channel The sections at both ends of the section are circular, and the section at the center of the second variable flow channel section is square;
所述冷流道组和热流道组的数量均为六组；每组所述冷流道组中所述冷流道的数量为十六个；每组所述热流道组中所述热流道的数量为十六个。The numbers of the cold runner groups and the hot runner groups are both six groups; the number of the cold runner groups in each group of the cold runner groups is sixteen; the hot runner groups in each group of the hot runner groups The number is sixteen.
优选的，所述火焰筒内壁呈锥形，所述火焰筒内壁的顶点处连接有出气口；所述火焰筒外壁上环设有若干个第一导向孔，所述第一导向孔包括第一导向内孔和第一导向外孔，所述第一导向内孔与第一导向外孔同轴，所述第一导向内孔设于火焰筒外壁的内侧上，所述第一导向外孔对应设于火焰筒外壁的外侧上，所述第一导向内孔和第一导向外孔内部形成导流通道；所述火焰筒底板上设有若干个进气孔。Preferably, the inner wall of the flame tube is tapered, and the apex of the inner wall of the flame tube is connected with an air outlet; the outer wall of the flame tube is provided with a plurality of first guide holes, and the first guide holes include a first guide hole. A guide inner hole and a first guide outer hole, the first guide inner hole is coaxial with the first guide outer hole, the first guide inner hole is arranged on the inner side of the outer wall of the flame tube, and the first guide outer hole corresponds to It is arranged on the outer side of the outer wall of the flame tube, and the first guide inner hole and the first guide outer hole form a guide channel inside; the flame tube bottom plate is provided with a number of air inlet holes.
优选的，所述第一导向孔与水平面的夹角θ为30°~45°；所述第一导向孔的直径为1~6mm；所述第一导向外孔的进气端的端面为斜面。Preferably, the angle θ between the first guide hole and the horizontal plane is 30°~45°; the diameter of the first guide hole is 1~6mm; the end face of the air inlet end of the first guide outer hole is an inclined surface.
优选的，所述导向管包括导向内管和导向外管；所述导向内管设于火焰筒外壁的内侧上，所述导向外管对应设于火焰筒外壁的外侧上，所述导向内管和导向外管内部形成导流通道，所述导向外管靠近火焰筒底板一侧开设有导向管进气口；所述导向内管靠近火焰筒底板一侧连接有螺旋管；且所述螺旋管与圆切线的夹角α为30°~45°。Preferably, the guide tube includes a guide inner tube and a guide outer tube; the guide inner tube is arranged on the inner side of the outer wall of the flame tube, the guide outer tube is correspondingly arranged on the outer side of the outer wall of the flame tube, and the guide inner tube is arranged on the inner side of the outer wall of the flame tube. A guide channel is formed inside the guide outer tube, the guide tube air inlet is provided on the side of the guide outer tube close to the bottom of the flame tube; the guide inner tube is connected with a spiral tube on the side near the bottom of the flame tube; The angle α with the tangent to the circle is 30°~45°.
优选的，所述火焰筒内壁上环设有若干个第二导向孔，且所述第二导向孔与水平面的夹角γ为50°~70°；所述火焰筒外壁靠近火焰筒底板一侧环设有若干个第三导向孔，所述第三导向孔与圆切线的夹角β为20°~40°。Preferably, a plurality of second guide holes are arranged on the inner wall of the flame tube, and the included angle γ between the second guide holes and the horizontal plane is 50°~70°; the outer wall of the flame tube is close to the side of the flame tube bottom plate. The ring is provided with a plurality of third guide holes, and the included angle β between the third guide holes and the circular tangent is 20°-40°.
本发明与现有技术相比，具有以下优点及有益效果：Compared with the prior art, the present invention has the following advantages and beneficial effects:
本发明的具有换热器的燃烧室结构，通过喷油环作为油路的中转站，稳定油压，再统一从喷油嘴喷出，确保较好的注油效果；且喷油嘴外套设有导向管，确保喷出的油直接通过导向管进入火焰筒内，确保油全部进入火焰筒参与燃烧，并且没有油渗出，确保燃烧只发生在火焰筒中；第一注油管采用多点间隔固定的方式固定在换热部上，避免换热部的温度不一致而导致第一注油管在热应力的作用下受拉破裂。In the combustion chamber structure with heat exchanger of the present invention, the oil injection ring is used as the transfer station of the oil circuit to stabilize the oil pressure, and then uniformly sprays out from the oil injection nozzle to ensure better oil injection effect; and the outer casing of the oil injection nozzle is provided with The guide tube ensures that the sprayed oil directly enters the flame tube through the guide tube, ensures that all the oil enters the flame tube to participate in the combustion, and no oil seeps out, and ensures that the combustion only occurs in the flame tube; the first oil injection tube adopts multi-point fixed intervals. It is fixed on the heat exchange part in such a way that the temperature of the heat exchange part is not inconsistent and the first oil injection pipe is pulled and ruptured under the action of thermal stress.
图1为本发明的结构示意图；Fig. 1 is the structural representation of the present invention;
图2为本发明的剖视结构示意图；Fig. 2 is the sectional structure schematic diagram of the present invention;
图3为图2中D处的局部结构示意图；Fig. 3 is the partial structure schematic diagram of D place in Fig. 2;
图4为本发明所述换热器的结构示意图；FIG. 4 is a schematic structural diagram of the heat exchanger according to the present invention;
图5为本发明所述换热器另一角度的结构示意图；5 is a schematic structural diagram of another angle of the heat exchanger according to the present invention;
图6为本发明所述换热器的俯视结构示意图；6 is a schematic top view of the structure of the heat exchanger according to the present invention;
图7为图6中A-A处的剖视图；Figure 7 is a sectional view at A-A in Figure 6;
图8为图6中B-B处的剖视图；Fig. 8 is a sectional view at B-B in Fig. 6;
图9为图6中C-C处的剖视图；Figure 9 is a cross-sectional view at C-C in Figure 6;
图10为本发明部分所述冷流道和热流道的结构示意图；10 is a schematic structural diagram of the cold runner and the hot runner described in part of the present invention;
图11为图10的剖视结构示意图；FIG. 11 is a schematic cross-sectional structure diagram of FIG. 10;
图12为本发明所述第一变化流道段的结构示意图；12 is a schematic structural diagram of the first variable flow channel section according to the present invention;
图13为本发明所述第二变化流道段的结构示意图；13 is a schematic structural diagram of the second variable flow channel section according to the present invention;
图14为本发明所述火焰筒的结构示意图；Fig. 14 is the structural representation of the flame tube of the present invention;
图15为本发明所述火焰筒的俯视结构示意图；Fig. 15 is the top-view structure schematic diagram of the flame tube of the present invention;
图16为图15中E处的局部结构示意图；Fig. 16 is the partial structure schematic diagram at E in Fig. 15;
图17为本发明所述火焰筒的侧视结构示意图；Fig. 17 is the side view structure schematic diagram of the flame tube of the present invention;
图18为本发明所述火焰筒的剖视结构示意图。18 is a schematic cross-sectional structural diagram of the flame tube according to the present invention.
为了使本领域的技术人员更好地理解本发明的技术方案，下面结合具体实施例对本发明的优选实施方案进行描述，但是应当理解，附图仅用于示例性说明，不能理解为对本专利的限制；为了更好说明本实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对于本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。附图中描述位置关系仅用于示例性说明，不能理解为对本专利的限制。In order to make those skilled in the art better understand the technical solutions of the present invention, the preferred embodiments of the present invention will be described below in conjunction with specific embodiments, but it should be understood that the accompanying drawings are only used for exemplary illustration, and should not be construed as a reference to the present invention. Limitation; in order to better illustrate this embodiment, some parts of the drawings will be omitted, enlarged or reduced, which do not represent the size of the actual product; for those skilled in the art, some well-known structures and their descriptions in the drawings may be The omission is understandable. The positional relationships described in the drawings are only for exemplary illustration, and should not be construed as a limitation on the present patent.
实施例Example
11
：:
如图1至18所示，一种具有换热器的燃烧室结构，包括换热器1和嵌设在所述换热器1内的火焰筒2；As shown in Figures 1 to 18, a combustion chamber structure with a heat exchanger includes a heat exchanger 1 and a flame tube 2 embedded in the heat exchanger 1;
所述换热器1包括换热器内壁11和换热器外壁12，且在所述换热器内壁11和换热器外壁12之间设有换热部13；The heat exchanger 1 includes an inner wall 11 of the heat exchanger and an outer wall 12 of the heat exchanger, and a heat exchange part 13 is provided between the inner wall 11 of the heat exchanger and the outer wall 12 of the heat exchanger;
所述火焰筒2包括火焰筒内壁21、火焰筒外壁22和火焰筒底板23，且所述火焰筒内壁21、火焰筒外壁22和火焰筒底板23之间形成气体流动腔体；The flame tube 2 includes a flame tube inner wall 21, a flame tube outer wall 22 and a flame tube bottom plate 23, and a gas flow cavity is formed between the flame tube inner wall 21, the flame tube outer wall 22 and the flame tube bottom plate 23;
所述换热器内壁11的内侧固定有喷油环14，所述喷油环14靠近所述火焰筒底板23的一侧环设有多个喷油嘴141；所述换热部13靠近所述火焰筒底板23的一侧设有第一注油管142；所述第一注油管142的一端贯穿所述换热器外壁12，并在所述换热器外壁12上形成注油口143；所述第一注油管142的另一端与所述喷油环14通过嵌设在所述换热器内壁11内的第二注油管144相互连通；所述第一注油管142包括多组依次交替连接的上凸段和下凹段，下凹段固定在所述换热部13上，上凸段架空在所述换热部13上；An oil injection ring 14 is fixed on the inner side of the inner wall 11 of the heat exchanger, and a plurality of oil injection nozzles 141 are arranged on the side of the oil injection ring 14 close to the bottom plate 23 of the flame cylinder; the heat exchange part 13 is close to the One side of the flame tube bottom plate 23 is provided with a first oil injection pipe 142; one end of the first oil injection pipe 142 penetrates the outer wall 12 of the heat exchanger, and an oil injection port 143 is formed on the outer wall 12 of the heat exchanger; The other end of the first oil injection pipe 142 and the oil injection ring 14 communicate with each other through a second oil injection pipe 144 embedded in the inner wall 11 of the heat exchanger; the first oil injection pipe 142 includes multiple groups of alternately connected The upper convex section and the lower concave section, the lower concave section is fixed on the heat exchange part 13, and the upper convex section is overhead on the heat exchange part 13;
所述火焰筒外壁22上环设有若干个与所述喷油嘴141对应的导向管222，且所述导向管222套设在所述喷油嘴141上。A plurality of guide pipes 222 corresponding to the fuel injection nozzles 141 are arranged on the outer wall 22 of the flame cylinder, and the guide pipes 222 are sleeved on the fuel injection nozzles 141 .
本发明通过所述喷油环14作为油路的中转站，稳定油压，再统一从所述喷油嘴141喷出，确保较好的注油效果；且所述喷油嘴141外套设有所述导向管222，确保喷出的油直接通过所述导向管222进入所述火焰筒2内，确保油全部进入所述火焰筒2参与燃烧，并且没有油渗出，确保燃烧只发生在所述火焰筒2中；所述第一注油管142采用多点间隔固定的方式固定在所述换热部13上，避免所述换热部13的温度不一致而导致所述第一注油管142在热应力的作用下受拉破裂。In the present invention, the oil injection ring 14 is used as the transfer station of the oil circuit to stabilize the oil pressure, and then uniformly spray from the oil injection nozzle 141 to ensure a better oil injection effect; and the oil injection nozzle 141 is provided with various The guide tube 222 ensures that the sprayed oil directly enters the flame tube 2 through the guide tube 222, ensures that all the oil enters the flame tube 2 to participate in combustion, and no oil seeps out, and ensures that combustion only occurs in the flame tube 2. In the flame tube 2; the first oil injection pipe 142 is fixed on the heat exchange part 13 by means of fixed intervals at multiple points, so as to prevent the temperature of the heat exchange part 13 from being inconsistent and causing the first oil injection pipe 142 to heat up. ruptured under tension.
进一步地，在另一个实施例中，所述换热器内壁11的一侧的内壁上等距环设有多个空气出口111，且每个所述空气出口111在所述换热器内壁11内开设空气出气腔112；所述换热器内壁11的另一侧的内壁上等距环设有多个烟气入口113，且每个所述烟气入口113在所述换热器内壁11内开设烟气进气腔114；所述换热器内壁11在设有所述烟气入口113的一侧还设有用于引导烟气流向的挡板115。Further, in another embodiment, a plurality of air outlets 111 are provided in an equidistant ring on the inner wall of one side of the inner wall 11 of the heat exchanger, and each of the air outlets 111 is on the inner wall 11 of the heat exchanger. An air outlet cavity 112 is opened inside; the inner wall on the other side of the inner wall 11 of the heat exchanger is provided with a plurality of flue gas inlets 113 in an equidistant ring, and each of the flue gas inlets 113 is on the inner wall 11 of the heat exchanger. A flue gas intake cavity 114 is opened inside; the inner wall 11 of the heat exchanger is further provided with a baffle 115 for guiding the flow of flue gas on the side where the flue gas inlet 113 is provided.
通过所述空气出气腔112，对输入的空气缓冲，避免空气从所述冷流道中喷出时会影响到燃烧室的燃烧效果，缓冲后的空气在从所述空气出气腔涌出，既不会影响到燃烧室的燃烧效果，还能保证燃烧室燃烧时具有足够的空气；通过所述烟气入口113和挡板115，燃烧室燃烧产生的烟气进入所述烟气进气腔114中，再通过所述烟气进气腔114进入所述热流道134中，确保燃烧室中不会留有过多的烟气，确保燃烧室内空气含量足够，提高燃烧效果。Through the air outlet cavity 112, the input air is buffered to prevent the combustion effect of the combustion chamber from being affected when the air is ejected from the cold runner, and the buffered air flows out from the air outlet cavity, neither It will affect the combustion effect of the combustion chamber, and can also ensure that the combustion chamber has enough air during combustion; through the flue gas inlet 113 and the baffle 115, the flue gas generated by the combustion of the combustion chamber enters the flue gas intake cavity 114. , and then enter the hot runner 134 through the flue gas intake cavity 114 to ensure that there will not be too much flue gas in the combustion chamber, ensure that the air content in the combustion chamber is sufficient, and improve the combustion effect.
进一步地，在另一个实施例中，所述换热器外壁12内侧对应多个所述空气出口111设有多个凸块121，所述凸块121背离所述空气出口111的一端设有空气入口122，且每个所述空气入口122在所述凸块121内开设空气进气腔123；所述换热器外壁12、换热部13和多个所述凸块121构成多个烟气出气腔124。Further, in another embodiment, the inner side of the outer wall 12 of the heat exchanger is provided with a plurality of protrusions 121 corresponding to the plurality of air outlets 111 , and the end of the protrusions 121 facing away from the air outlet 111 is provided with air Inlet 122, and each air inlet 122 defines an air intake cavity 123 in the bump 121; the outer wall 12 of the heat exchanger, the heat exchange part 13 and a plurality of the bumps 121 constitute a plurality of flue gases Outlet cavity 124 .
通过在所述换热器外壁12内侧的圆周方向上等距设置多个所述凸块121，构成了所述换热器外壁12内侧交替布置的所述空气进气腔123和烟气出气腔124；将所述空气进气腔123和烟气出气腔124的开口方向设置相反，防止刚排出的烟气被所述空气进气腔123吸入，确保所述空气进气腔123较好的进气效果。By arranging a plurality of the bumps 121 at equal distances in the circumferential direction inside the outer wall 12 of the heat exchanger, the air intake cavities 123 and the flue gas outlet cavities alternately arranged inside the outer wall 12 of the heat exchanger are formed 124; Set the opening directions of the air intake chamber 123 and the smoke outlet chamber 124 in opposite directions to prevent the newly discharged flue gas from being sucked into the air intake chamber 123, and ensure that the air intake chamber 123 can enter the air well. gas effect.
进一步地，在另一个实施例中，所述换热部13内设有数量相等的冷流道组131和热流道组132；所述冷流道组131和热流道组132在所述换热部13的圆周方向上交替等距设置；每个所述冷流道组131包括在竖直方向上并列设置的多个冷流道133，所述冷流道133为螺旋状流道，每个所述冷流道133均与所述空气进气腔123和空气出气腔112连通；每个所述热流道组132包括在竖直方向上并列设置的多个热流道134，所述热流道134为螺旋状流道，每个所述热流道134均与所述烟气进气腔114和烟气出气腔124连通。Further, in another embodiment, the heat exchange part 13 is provided with an equal number of cold runner groups 131 and hot runner groups 132; Each of the cold runner groups 131 includes a plurality of cold runners 133 arranged in parallel in the vertical direction. The cold runners 133 are spiral runners. The cold runners 133 are all communicated with the air inlet cavity 123 and the air outlet cavity 112 ; each of the hot runner groups 132 includes a plurality of hot runners 134 arranged in parallel in the vertical direction, and the hot runners 134 Each of the hot runners 134 is in communication with the flue gas inlet cavity 114 and the flue gas gas outlet cavity 124 .
通过所述换热部13中交替排列的冷流道组131和热流道组132，所述火焰筒2中燃烧产生的烟气从所述热流道组132排出，所述火焰筒2燃烧所需的空气从所述冷流道组131输入所述火焰筒2，在空气和烟气流动的过程中直接采用空气对烟气进行换热降温，不需要使用其他的降温介质或降温结构就能降低烟气排放时的温度，并且还将需要输入所述火焰筒2的空气的温度升高，有效减少了燃烧室向外界的热量散失；所述冷流道133和热流道134均为螺旋流道，延长换热过程，保证较好的换热效果。Through the alternately arranged cold runner groups 131 and hot runner groups 132 in the heat exchange portion 13 , the flue gas generated by the combustion in the flame tube 2 is discharged from the hot runner set 132 , which is required for the combustion of the flame tube 2 . The air from the cold runner group 131 is input into the flame tube 2, and the air is directly used to exchange heat and cool the flue gas during the flow of the air and the flue gas. The temperature when the flue gas is discharged, and the temperature of the air that needs to be input into the flame tube 2 will be increased, which effectively reduces the heat loss from the combustion chamber to the outside world; the cold runner 133 and the hot runner 134 are both spiral runners , prolong the heat exchange process and ensure better heat exchange effect.
进一步地，在另一个实施例中，每个所述冷流道133的螺旋角度均为360°；所述冷流道133包括连通至所述空气进气腔123的空气进气弯头1331、连通至所述空气出气腔112的空气出气弯头1332和连接所述空气进气弯头1331和空气出气弯头1332的第一螺旋流道1333；所述第一螺旋流道1333由多个第一变化流道段1334连接而成；所述第一变化流道段1334两端的截面为圆形，所述第一变化流道段1334中央的截面呈正方形；Further, in another embodiment, the helix angle of each of the cold runners 133 is 360°; the cold runners 133 include air intake elbows 1331 , The air outlet elbow 1332 connected to the air outlet chamber 112 and the first spiral flow channel 1333 connecting the air inlet elbow 1331 and the air outlet elbow 1332; the first spiral flow channel 1333 consists of a plurality of A variable flow channel section 1334 is connected; the cross-sections at both ends of the first variable flow channel section 1334 are circular, and the central section of the first variable flow channel section 1334 is square;
通过所述空气进气弯头1331，所述冷流道133可以更好的连通到所述空气进气腔123，确保较好的进气效果；通过所述空气出气弯头1332，所述冷流道133可以更好的连通到所述空气出气腔112，确保较好的出气效果。Through the air intake elbow 1331, the cold runner 133 can be better communicated with the air intake cavity 123 to ensure a better intake effect; through the air outlet elbow 1332, the cold runner 133 The flow channel 133 can be better communicated with the air outlet cavity 112 to ensure a better air outlet effect.
每个所述热流道134的螺旋角度均为360°；所述热流道134包括连通至所述烟气进气腔114的烟气进气弯头1341、连通至所述烟气出气腔124的烟气出气弯头1342和连接所述烟气进气弯头1341和烟气出气弯头1342的第二螺旋流道1343；所述第二螺旋流道1343由多个第二变化流道段1344连接而成；所述第二变化流道段1344两端的截面为圆形，所述第二变化流道段1344中央的截面呈正方形；The helix angle of each of the hot runners 134 is 360°; the hot runner 134 includes a flue gas intake elbow 1341 connected to the flue gas intake cavity 114 , and a flue gas intake elbow 1341 connected to the flue gas outlet cavity 124 . The flue gas outlet elbow 1342 and the second spiral flow channel 1343 connecting the flue gas intake elbow 1341 and the flue gas outlet elbow 1342; the second spiral flow channel 1343 consists of a plurality of second variable flow channel sections 1344 The cross-sections at both ends of the second variable flow channel section 1344 are circular, and the central section of the second variable flow channel section 1344 is square;
通过所述烟气进气弯头1341，所述热流道134可以更好的连通到所述烟气进气腔114，确保较好的进气效果；通过所述空气出气弯头1332，所述热流道134可以更好的连通到所述烟气出气腔124，确保较好的出气效果。Through the flue gas intake elbow 1341, the hot runner 134 can be better communicated with the flue gas intake cavity 114 to ensure a better intake effect; through the air outlet elbow 1332, the The hot runner 134 can be better communicated with the flue gas outlet cavity 124 to ensure a better outlet effect.
所述冷流道133和热流道134的螺旋角度均为360°，确保所述冷流道133和热流道134具有足够的换热行程，有效减少了燃烧室向外界的热量散失。The spiral angles of the cold runner 133 and the hot runner 134 are both 360°, which ensures that the cold runner 133 and the hot runner 134 have sufficient heat exchange strokes, and effectively reduces the heat loss from the combustion chamber to the outside.
所述第一变化流道段1334和第二变化流道段1344均为渐变流道，两端的截面为圆形，中间的截面为正方形，即从一端的圆形截面过渡到中间的正方形截面，再从正方形截面过渡到另一端的圆形截面，这样的设置使相邻流道之间有更大的接触面积，既优于单纯的圆截面流道，也优于单纯的方形截面流道。在截面变化的过程中，迫使流道内截面流体重新分布，增加了流体之间的扰动换热，流道内截面上流体温度分布更均匀，换热效果更好；而且所述第一变化流道段1334和第二变化流道段1344考虑了流道的热胀冷缩，给流道变形留下了空间，圆形截面受热或承压可以变为方形，方形截面受热或承压往圆形截面方向变化。The first variable flow channel section 1334 and the second variable flow channel section 1344 are both gradual flow channels, the cross-sections at both ends are circular, and the cross-section in the middle is square, that is, from the circular section at one end to the square section in the middle, Then transition from the square section to the circular section at the other end. This arrangement enables a larger contact area between the adjacent flow channels, which is better than the pure circular section flow channel and the pure square section flow channel. In the process of cross-section change, the fluid in the cross-section of the flow channel is forced to redistribute, which increases the turbulent heat exchange between the fluids, the fluid temperature distribution on the cross-section of the flow channel is more uniform, and the heat exchange effect is better; and the first changing flow channel section 1334 and the second variable runner section 1344 take into account the thermal expansion and contraction of the runner, leaving space for the runner to deform. The circular section can be turned into a square when heated or under pressure, and the square section is heated or compressed to a circular section. direction change.
所述第一变化流道段1334和第二变化流道段1344的螺旋角度为2°，即所述第一螺旋流道1333由180段所述第一变化流道段1334构成，所述第二螺旋流道1343由180段所述第二变化流道段1344构成；所述第一变化流道段1334和第二变化流道段1344的数量越多，即流道上截面的变化越多，其抵抗热胀冷缩和换热的效果就更好。The spiral angle of the first variable flow channel section 1334 and the second variable flow channel section 1344 is 2°, that is, the first spiral flow channel 1333 is composed of 180 sections of the first variable flow channel section 1334, and the first variable flow channel section 1334 is composed of 180 sections. The second helical flow channel 1343 is composed of 180 sections of the second variable flow channel section 1344; the greater the number of the first variable flow channel section 1334 and the second variable flow channel section 1344, that is, the more changes in the cross section of the flow channel, Its resistance to thermal expansion and contraction and heat transfer is better.
所述第一变化流道段1334和第二变化流道段1344的中间截面为正方形，该正方形的四条边采用内凹圆弧，可以更好的与圆形截面的流道贴合。The middle section of the first variable flow channel section 1334 and the second variable flow channel section 1344 is a square, and the four sides of the square are concave arcs, which can better fit the flow channels with circular cross-sections.
每一个所述冷流道133周围被四个所述热流道134包围，提高了空气和烟气之间的换热面积。并且所述冷流道133和热流道134之间互为支撑，加强了换热器的强度。Each of the cold runners 133 is surrounded by four of the hot runners 134, which improves the heat exchange area between the air and the flue gas. In addition, the cold runner 133 and the hot runner 134 are mutually supported, which enhances the strength of the heat exchanger.
所述冷流道组131和热流道组132的数量均为六组；每组所述冷流道组131中所述冷流道133的数量为十六个；每组所述热流道组132中所述热流道134的数量为十六个。The number of the cold runner groups 131 and the hot runner groups 132 are both six groups; the number of the cold runner groups 133 in each group of the cold runner groups 131 is sixteen; the hot runner groups 132 in each group The number of hot runners 134 described in the above is sixteen.
进一步地，在另一个实施例中，所述火焰筒内壁21呈锥形，所述火焰筒内壁21的顶点处连接有出气口211；所述火焰筒外壁22上环设有若干个第一导向孔221，所述第一导向孔221包括第一导向内孔2212和第一导向外孔2211，所述第一导向内孔2212与第一导向外孔2211同轴，所述第一导向内孔2212设于火焰筒外壁22的内侧上，所述第一导向外孔2211对应设于火焰筒外壁22的外侧上，所述第一导向内孔2212和第一导向外孔2211内部形成导流通道；所述火焰筒底板23上设有若干个进气孔231。Further, in another embodiment, the inner wall 21 of the flame tube is tapered, and the apex of the inner wall 21 of the flame tube is connected with an air outlet 211; the outer wall 22 of the flame tube is provided with a plurality of first guides. Hole 221, the first guide hole 221 includes a first guide inner hole 2212 and a first guide outer hole 2211, the first guide inner hole 2212 is coaxial with the first guide outer hole 2211, the first guide inner hole 2211 2212 is arranged on the inner side of the outer wall 22 of the flame tube, the first guide outer hole 2211 is correspondingly arranged on the outer side of the outer wall 22 of the flame tube, and the first inner guide hole 2212 and the first outer guide hole 2211 form a guide channel inside ; The flame tube bottom plate 23 is provided with a number of air inlet holes 231.
所述第一导向孔221倾斜设置在所述火焰筒外壁22上，可以使气流进入火焰筒后贴着所述火焰筒外壁22表面螺旋向所述火焰筒2出口方向流动。由于进入的气流为切向的，气流进入所述火焰筒2后沿着所述火焰筒2的壁面流动，这些旋转气流组成一个包络面，将火焰包裹在所述火焰筒2内，在内部高温火焰和所述火焰筒2的壁面之间形成一个低温旋转空气层，可以对所述火焰筒2有更好的冷却保护作用，同时气流的切向，还有带动所述火焰筒2内气流旋转，增加气流在所述火焰筒2内的停留时间，有利于氧化剂和燃料在所述火焰筒2内充分反应。The first guide hole 221 is obliquely arranged on the outer wall 22 of the flame tube, so that the airflow can flow in the direction of the outlet of the flame tube 2 along the surface of the outer wall 22 of the flame tube after entering the flame tube. Since the incoming air flow is tangential, the air flow flows along the wall surface of the flame tube 2 after entering the flame tube 2. These rotating airflows form an envelope surface, which wraps the flame in the flame tube 2, and inside the flame tube 2 A low-temperature rotating air layer is formed between the high temperature flame and the wall surface of the flame tube 2, which can have a better cooling protection effect on the flame tube 2. At the same time, the tangential direction of the air flow also drives the airflow in the flame tube 2. Rotation increases the residence time of the airflow in the flame tube 2 , which is beneficial to the sufficient reaction of the oxidant and the fuel in the flame tube 2 .
进一步地，在另一个实施例中，所述第一导向孔221与水平面的夹角θ为30°~45°；所述第一导向孔221的直径为1~6mm；所述第一导向外孔2211的进气端的端面为斜面。Further, in another embodiment, the angle θ between the first guide hole 221 and the horizontal plane is 30°~45°; the diameter of the first guide hole 221 is 1~6mm; The end face of the intake end of the hole 2211 is an inclined face.
通过所述第一导向外孔2211和第一导向内孔2212，贯穿所述火焰筒外壁22，有利于增大气流流入所述火焰筒2的动量，气流穿透距离更长；所述第一导向外孔2211的进气口端面是斜切的，相比圆形进口面，增大了气流进口面积，从而提高了流量系数，有利于更多气流通过开孔流入；所述第一导向孔221倾斜设置在火焰筒壁面上，可以使气流进入火焰筒后贴着所述火焰筒外壁22表面螺旋向火焰筒出口方向流动；所述第一导向孔221可以并排或交错设置，同时所述第一导向孔221的孔径也可以根据实际需要进行改变，以匹配所述火焰筒2轴向不同位置燃烧需要的空气量。The first outer guide hole 2211 and the first inner guide hole 2212 penetrate through the outer wall 22 of the flame tube, which is beneficial to increase the momentum of the airflow flowing into the flame tube 2, and the penetration distance of the air flow is longer; the first The end face of the air inlet of the guide outer hole 2211 is chamfered, which increases the airflow inlet area compared to the circular inlet face, thereby improving the flow coefficient, which is conducive to the inflow of more airflow through the opening; the first guide hole 221 is obliquely arranged on the wall surface of the flame tube, so that the air flow can flow in the direction of the outlet of the flame tube against the surface of the outer wall 22 of the flame tube after entering the flame tube; the first guide holes 221 can be arranged side by side or staggered. The diameter of a guide hole 221 can also be changed according to actual needs to match the air volume required for combustion at different axial positions of the flame tube 2 .
进一步地，在另一个实施例中，所述导向管222包括导向内管2221和导向外管2222；所述导向内管2221设于火焰筒外壁22的内侧上，所述导向外管2222对应设于火焰筒外壁22的外侧上，所述导向内管2221和导向外管2222内部形成导流通道，所述导向外管2222靠近火焰筒底板23一侧开设有导向管进气口2224；所述导向内管2221靠近火焰筒底板23一侧连接有螺旋管2223；且所述螺旋管2223与圆切线的夹角α为30°~45°。Further, in another embodiment, the guide tube 222 includes a guide inner tube 2221 and a guide outer tube 2222; the guide inner tube 2221 is arranged on the inner side of the outer wall 22 of the flame tube, and the guide outer tube 2222 is correspondingly arranged On the outside of the outer wall 22 of the flame tube, the inner guide tube 2221 and the outer guide tube 2222 form a guide channel, and the outer guide tube 2222 is provided with a guide tube air inlet 2224 on the side close to the bottom plate 23 of the flame tube; A spiral tube 2223 is connected to a side of the guiding inner tube 2221 close to the bottom plate 23 of the flame tube; and the angle α between the spiral tube 2223 and the circular tangent is 30°-45°.
所述导向管222远离所述火焰筒底板23一侧设有进油口，所述进气口2224为进空气口，油和空气在所述导向管222内发生作用，会产生雾化效果，增加油的燃烧效率。An oil inlet is provided on the side of the guide pipe 222 away from the flame cylinder bottom plate 23, and the air inlet 2224 is an air inlet. The oil and air act in the guide pipe 222 to produce an atomization effect. Increase the combustion efficiency of oil.
进一步地，在另一个实施例中，所述火焰筒内壁21上环设有若干个第二导向孔212，且所述第二导向孔212与水平面的夹角γ为50°~70°；所述火焰筒外壁22靠近火焰筒底板23一侧环设有若干个第三导向孔223，所述第三导向孔223与圆切线的夹角β为20°~40°。Further, in another embodiment, the inner wall 21 of the flame tube is provided with a plurality of second guide holes 212, and the angle γ between the second guide holes 212 and the horizontal plane is 50°~70°; A plurality of third guide holes 223 are arranged on the side of the outer wall 22 of the flame tube close to the bottom plate 23 of the flame tube, and the angle β between the third guide holes 223 and the circular tangent is 20°-40°.
以上各个角度的设置是为了增加气流在所述火焰筒2内的停留时间，有利于氧化剂和燃料在所述火焰筒2内充分反应。The above angles are set to increase the residence time of the airflow in the flame tube 2 , which is beneficial to the sufficient reaction of the oxidant and the fuel in the flame tube 2 .
依据本发明的描述及附图，本领域技术人员很容易制造或使用本发明的具有换热器的燃烧室结构，并且能够产生本发明所记载的积极效果。Based on the description of the present invention and the accompanying drawings, those skilled in the art can easily manufacture or use the combustion chamber structure with a heat exchanger of the present invention, and can produce the positive effects described in the present invention.
如无特殊说明，本发明中，若有术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系是基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此本发明中描述方位或位置关系的用语仅用于示例性说明，不能理解为对本专利的限制，对于本领域的普通技术人员而言，可以结合附图，并根据具体情况理解上述术语的具体含义。Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", " The orientation or positional relationship indicated by horizontal, top, bottom, inner, outer, clockwise, counterclockwise, axial, radial, circumferential, etc. is Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore the present invention The terms describing the orientation or positional relationship are only used for exemplary illustration, and should not be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations with reference to the accompanying drawings.
除非另有明确的规定和限定，本发明中，若有术语“设置”、“相连”及“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。Unless otherwise specified and limited, in the present invention, the terms "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection ; It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.
以上所述，仅是本发明的较佳实施例，并非对本发明做任何形式上的限制，凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化，均落入本发明的保护范围之内。The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any simple modifications and equivalent changes made to the above embodiments according to the technical essence of the present invention fall into the scope of the present invention. within the scope of protection.
Claims (9)
- 一种具有换热器的燃烧室结构，其特征在于：包括换热器（1）和嵌设在所述换热器（1）内的火焰筒（2）；A combustion chamber structure with a heat exchanger, characterized by comprising a heat exchanger (1) and a flame tube (2) embedded in the heat exchanger (1);所述换热器（1）包括换热器内壁（11）和换热器外壁（12），且在所述换热器内壁（11）和换热器外壁（12）之间设有换热部（13）；The heat exchanger (1) comprises an inner wall (11) of the heat exchanger and an outer wall (12) of the heat exchanger, and a heat exchange is arranged between the inner wall (11) of the heat exchanger and the outer wall (12) of the heat exchanger Section(13);所述火焰筒（2）包括火焰筒内壁（21）、火焰筒外壁（22）和火焰筒底板（23），且所述火焰筒内壁（21）、火焰筒外壁（22）和火焰筒底板（23）之间形成气体流动腔体；The flame tube (2) includes a flame tube inner wall (21), a flame tube outer wall (22) and a flame tube bottom plate (23), and the flame tube inner wall (21), the flame tube outer wall (22) and the flame tube bottom plate (23). 23) A gas flow cavity is formed between;所述换热器内壁（11）的内侧固定有喷油环（14），所述喷油环（14）靠近所述火焰筒底板（23）的一侧环设有多个喷油嘴（141）；所述换热部（13）靠近所述火焰筒底板（23）的一侧设有第一注油管（142）；所述第一注油管（142）的一端贯穿所述换热器外壁（12），并在所述换热器外壁（12）上形成注油口（143）；所述第一注油管（142）的另一端与所述喷油环（14）通过嵌设在所述换热器内壁（11）内的第二注油管（144）相互连通；所述第一注油管（142）包括多组依次交替连接的上凸段和下凹段，下凹段固定在所述换热部（13）上，上凸段架空在所述换热部（13）上；An oil injection ring (14) is fixed on the inner side of the inner wall (11) of the heat exchanger, and a plurality of oil injection nozzles (141) are arranged on the side of the oil injection ring (14) close to the bottom plate (23) of the flame tube. ); a first oil injection pipe (142) is provided on the side of the heat exchange part (13) close to the flame cylinder bottom plate (23); one end of the first oil injection pipe (142) penetrates the outer wall of the heat exchanger (12), and an oil injection port (143) is formed on the outer wall of the heat exchanger (12); the other end of the first oil injection pipe (142) and the oil injection ring (14) are embedded in the The second oil injection pipes (144) in the inner wall (11) of the heat exchanger are communicated with each other; the first oil injection pipe (142) includes a plurality of sets of upper convex sections and lower concave sections which are alternately connected in sequence, and the lower concave sections are fixed on the On the heat exchange part (13), the upper convex section is overhead on the heat exchange part (13);所述火焰筒外壁（22）上环设有若干个与所述喷油嘴（141）对应的导向管（222），且所述导向管（222）套设在所述喷油嘴（141）上。The outer wall (22) of the flame tube is provided with a plurality of guide pipes (222) corresponding to the fuel injection nozzles (141), and the guide pipes (222) are sleeved on the fuel injection nozzles (141). superior.
- 根据权利要求1所述的一种具有换热器的燃烧室结构，其特征在于：所述换热器内壁（11）的一侧的内壁上等距环设有多个空气出口（111），且每个所述空气出口（111）在所述换热器内壁（11）内开设空气出气腔（112）；所述换热器内壁（11）的另一侧的内壁上等距环设有多个烟气入口（113），且每个所述烟气入口（113）在所述换热器内壁（11）内开设烟气进气腔（114）；所述换热器内壁（11）在设有所述烟气入口（113）的一侧还设有用于引导烟气流向的挡板（115）。A combustion chamber structure with a heat exchanger according to claim 1, characterized in that: a plurality of air outlets (111) are provided on an equidistant ring on the inner wall of one side of the inner wall (11) of the heat exchanger, And each of the air outlets (111) is provided with an air outlet cavity (112) in the inner wall (11) of the heat exchanger; an equidistant ring is provided on the inner wall on the other side of the inner wall (11) of the heat exchanger. A plurality of flue gas inlets (113), and each of the flue gas inlets (113) defines a flue gas intake cavity (114) in the inner wall (11) of the heat exchanger; the inner wall (11) of the heat exchanger A baffle plate (115) for guiding the flow of the flue gas is also provided on the side where the flue gas inlet (113) is provided.
- 根据权利要求2所述的一种具有换热器的燃烧室结构，其特征在于：所述换热器外壁（12）内侧对应多个所述空气出口（111）设有多个凸块（121），所述凸块（121）背离所述空气出口（111）的一端设有空气入口（122），且每个所述空气入口（122）在所述凸块（121）内开设空气进气腔（123）；所述换热器外壁（12）、换热部（13）和多个所述凸块（121）构成多个烟气出气腔（124）。The combustion chamber structure with a heat exchanger according to claim 2, characterized in that: a plurality of bumps (121) are provided on the inner side of the outer wall (12) of the heat exchanger corresponding to the plurality of air outlets (111) ), an air inlet (122) is provided at the end of the bump (121) away from the air outlet (111), and each of the air inlets (122) is provided with an air intake in the bump (121) A cavity (123); the outer wall (12) of the heat exchanger, the heat exchange part (13) and the plurality of the bumps (121) constitute a plurality of flue gas outlet cavities (124).
- 根据权利要求3所述的一种具有换热器的燃烧室结构，其特征在于：所述换热部（13）内设有数量相等的冷流道组（131）和热流道组（132）；所述冷流道组（131）和热流道组（132）在所述换热部（13）的圆周方向上交替等距设置；每个所述冷流道组（131）包括在竖直方向上并列设置的多个冷流道（133），所述冷流道（133）为螺旋状流道，每个所述冷流道（133）均与所述空气进气腔（123）和空气出气腔（112）连通；每个所述热流道组（132）包括在竖直方向上并列设置的多个热流道（134），所述热流道（134）为螺旋状流道，每个所述热流道（134）均与所述烟气进气腔（114）和烟气出气腔（124）连通。The combustion chamber structure with a heat exchanger according to claim 3, wherein the heat exchange portion (13) is provided with an equal number of cold runner groups (131) and hot runner groups (132) ; The cold runner group (131) and the hot runner group (132) are alternately and equally spaced in the circumferential direction of the heat exchange portion (13); each of the cold runner groups (131) includes a vertical A plurality of cold runners (133) are arranged side by side in the direction, the cold runners (133) are helical runners, and each of the cold runners (133) is connected to the air intake cavity (123) and the The air outlet cavities (112) are in communication; each of the hot runner groups (132) includes a plurality of hot runners (134) arranged in parallel in the vertical direction, the hot runners (134) are helical runners, each The hot runners (134) are all communicated with the flue gas inlet cavity (114) and the flue gas outlet cavity (124).
- 根据权利要求4所述的一种具有换热器的燃烧室结构，其特征在于：每个所述冷流道（133）的螺旋角度均为360°；所述冷流道（133）包括连通至所述空气进气腔（123）的空气进气弯头（1331）、连通至所述空气出气腔（112）的空气出气弯头（1332）和连接所述空气进气弯头（1331）和空气出气弯头（1332）的第一螺旋流道（1333）；所述第一螺旋流道（1333）由多个第一变化流道段（1334）连接而成；所述第一变化流道段（1334）两端的截面为圆形，所述第一变化流道段（1334）中央的截面呈正方形；The combustion chamber structure with a heat exchanger according to claim 4, characterized in that: the helix angle of each of the cold runners (133) is 360°; the cold runners (133) include communication Air inlet elbow (1331) to the air inlet chamber (123), air outlet elbow (1332) connected to the air outlet chamber (112), and connection to the air inlet elbow (1331) and the first spiral flow channel (1333) of the air outlet elbow (1332); the first spiral flow channel (1333) is formed by connecting a plurality of first variable flow channel segments (1334); the first variable flow channel The cross-sections at both ends of the channel segment (1334) are circular, and the central cross-section of the first variable flow channel segment (1334) is square;每个所述热流道（134）的螺旋角度均为360°；所述热流道（134）包括连通至所述烟气进气腔（114）的烟气进气弯头（1341）、连通至所述烟气出气腔（124）的烟气出气弯头（1342）和连接所述烟气进气弯头（1341）和烟气出气弯头（1342）的第二螺旋流道（1343）；所述第二螺旋流道（1343）由多个第二变化流道段（1344）连接而成；所述第二变化流道段（1344）两端的截面为圆形，所述第二变化流道段（1344）中央的截面呈正方形；The helix angle of each of the hot runners (134) is 360°; the hot runners (134) include a flue gas intake elbow (1341) connected to the flue gas intake cavity (114), a flue gas outlet elbow (1342) of the flue gas outlet chamber (124) and a second spiral flow channel (1343) connecting the flue gas intake elbow (1341) and the flue gas outlet elbow (1342); The second spiral flow channel (1343) is formed by connecting a plurality of second variable flow channel segments (1344); the cross-sections at both ends of the second variable flow channel segment (1344) are circular, and the second variable flow channel segments (1344) are circular in cross section. The section in the center of the section (1344) is square;所述冷流道组（131）和热流道组（132）的数量均为六组；每组所述冷流道组（131）中所述冷流道（133）的数量为十六个；每组所述热流道组（132）中所述热流道（134）的数量为十六个。The numbers of the cold runner groups (131) and the hot runner groups (132) are both six groups; the number of the cold runner groups (133) in each group of the cold runner groups (131) is sixteen; The number of the hot runners (134) in each of the hot runner groups (132) is sixteen.
- 根据权利要求1所述的一种具有换热器的燃烧室结构，其特征在于：所述火焰筒内壁（21）呈锥形，所述火焰筒内壁（21）的顶点处连接有出气口（211）；所述火焰筒外壁（22）上环设有若干个第一导向孔（221），所述第一导向孔（221）包括第一导向内孔（2212）和第一导向外孔（2211），所述第一导向内孔（2212）与第一导向外孔（2211）同轴，所述第一导向内孔（2212）设于火焰筒外壁（22）的内侧上，所述第一导向外孔（2211）对应设于火焰筒外壁（22）的外侧上，所述第一导向内孔（2212）和第一导向外孔（2211）内部形成导流通道；所述火焰筒底板（23）上设有若干个进气孔（231）。A combustion chamber structure with a heat exchanger according to claim 1, characterized in that: the inner wall (21) of the flame tube is tapered, and an air outlet ( 211); a plurality of first guide holes (221) are arranged on the outer wall of the flame tube (22), and the first guide holes (221) include a first inner guide hole (2212) and a first outer guide hole ( 2211), the first guide inner hole (2212) is coaxial with the first guide outer hole (2211), the first guide inner hole (2212) is arranged on the inner side of the outer wall (22) of the flame tube, and the A guide outer hole (2211) is correspondingly arranged on the outer side of the outer wall (22) of the flame tube, and the first inner guide hole (2212) and the first outer guide hole (2211) form a guide channel inside; the flame tube bottom plate (23) is provided with several air inlet holes (231).
- 根据权利要求6所述的一种具有换热器的燃烧室结构，其特征在于：所述第一导向孔（221）与水平面的夹角θ为30°~45°；所述第一导向孔（221）的直径为1~6mm；所述第一导向外孔（2211）的进气端的端面为斜面。The combustion chamber structure with heat exchanger according to claim 6, characterized in that: the angle θ between the first guide hole (221) and the horizontal plane is 30°~45°; The diameter of (221) is 1-6 mm; the end face of the air inlet end of the first outer guide hole (2211) is an inclined plane.
- 根据权利要求6所述的一种具有换热器的燃烧室结构，其特征在于：所述导向管（222）包括导向内管（2221）和导向外管（2222）；所述导向内管（2221）设于火焰筒外壁（22）的内侧上，所述导向外管（2222）对应设于火焰筒外壁（22）的外侧上，所述导向内管（2221）和导向外管（2222）内部形成导流通道，所述导向外管（2222）靠近火焰筒底板（23）一侧开设有导向管进气口（2224）；所述导向内管（2221）靠近火焰筒底板（23）一侧连接有螺旋管（2223）；且所述螺旋管（2223）与圆切线的夹角α为30°~45°。The combustion chamber structure with a heat exchanger according to claim 6, characterized in that: the guide pipe (222) comprises a guide inner pipe (2221) and a guide outer pipe (2222); the guide inner pipe (2222) 2221) is arranged on the inner side of the outer wall (22) of the flame tube, the outer guide tube (2222) is correspondingly arranged on the outer side of the outer wall (22) of the flame tube, the inner guide tube (2221) and the outer guide tube (2222) A guide channel is formed inside, and a guide pipe air inlet (2224) is opened on the side of the guide outer pipe (2222) close to the flame cylinder bottom plate (23); the guide inner pipe (2221) is close to the flame cylinder bottom plate (23) a The side is connected with a spiral tube (2223); and the angle α between the spiral tube (2223) and the circular tangent is 30°~45°.
- 根据权利要求6所述的一种具有换热器的燃烧室结构，其特征在于：所述火焰筒内壁（21）上环设有若干个第二导向孔（212），且所述第二导向孔（212）与水平面的夹角γ为50°~70°；所述火焰筒外壁（22）靠近火焰筒底板（23）一侧环设有若干个第三导向孔（223），所述第三导向孔（223）与圆切线的夹角β为20°~40°。A combustion chamber structure with a heat exchanger according to claim 6, characterized in that: the inner wall (21) of the flame tube is provided with a plurality of second guide holes (212), and the second guide holes (212) The included angle γ between the hole (212) and the horizontal plane is 50°~70°; a plurality of third guide holes (223) are arranged on the side of the outer wall (22) of the flame tube close to the bottom plate (23) of the flame tube. The angle β between the three guide holes (223) and the circular tangent is 20°~40°.
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