CN105673626B - Turbulent laminar flow variable Temperature field collecting apparatus sleeve - Google Patents

Turbulent laminar flow variable Temperature field collecting apparatus sleeve Download PDF

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Publication number
CN105673626B
CN105673626B CN 201610202947 CN201610202947A CN105673626B CN 105673626 B CN105673626 B CN 105673626B CN 201610202947 CN201610202947 CN 201610202947 CN 201610202947 A CN201610202947 A CN 201610202947A CN 105673626 B CN105673626 B CN 105673626B
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CN 201610202947
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CN105673626A (en )
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赵健
张继
梅宁
张雯
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中国海洋大学
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Abstract

本发明涉及管道流体计算及加热领域,尤其是一种湍流变层流套管加热温度场采集装置。 The present invention relates to the field of heating and computational fluid conduit, in particular a turbulent becomes laminar flow sleeve Temperature field collecting apparatus. 包括外管和内管,内管设置在外管内,内管沿流体流动方向设置,内管固定在外管内,内管沿流体流动方向的前部依次设置整流栅和节流网,整流栅设置在内管的前端,内管的中部设有测速仪,内管沿流体流动方向的后部依次设置热电偶埋设处和节流网,其中节流网设置在内管的后端,沿内管的圆周方向间隔设置数个热电偶埋设处,热电偶固定在热电偶埋设处,内管的外表面缠绕有电阻丝。 Includes an outer tube and an inner tube, an inner tube disposed within the outer tube, an inner tube disposed in the fluid flow direction, the inner tube fixed to the outer tube, the front portion of the inner tube in the direction of fluid flow are sequentially disposed flow control grid and sections drift, flow control grid provided in the inner the front end of the tube, the inner tube is provided with a central speedometer, the rear portion of the inner tube in the direction of fluid flow and are sequentially disposed at the embedded thermocouple drift sections, wherein the rear end of the inner tube section drift provided, along the circumference of the inner tube a plurality of spaced direction at a thermocouple embedded thermocouple embedded thermocouple is fixed, the outer surface of the inner tube is wound with a resistance wire. 其结构简单,使用方便,不仅可以将高速湍流流体转变为慢速层流流体,而且还可以采集对流体的速度和温度场的数值。 Its structure is simple, easy to use, not only high velocity turbulent fluid flow into the fluid layer is slow, but also the value of the rate of fluid acquisition and temperature field.

Description

湍流变层流套管加热温度场采集装置 Turbulent laminar flow variable Temperature field collecting apparatus sleeve

技术领域 FIELD

[0001] 本发明涉及管道流体计算及加热领域,尤其是一种湍流变层流套管加热温度场采集装置。 [0001] The present invention relates to the field of heating and computational fluid conduit, in particular a turbulent flow sleeve Temperature field change layer acquisition means.

背景技术 Background technique

[0002] 湍流求解中心问题是求湍流基本方程纳维-斯托克斯方程的统计解,由于此方程的非线性和湍流解的不规则性,湍流理论成为流体力学中最困难而又引人入胜的领域。 [0002] The central issue is seeking to solve the turbulence turbulence basic equation of Navier - Stokes equations solution statistics, due to nonlinearities and irregularities turbulent solutions of this equation becomes turbulence theory of fluid mechanics in the most difficult and fascinating field. 虽然湍流已经研宄了一百多年,但是迄今还没有成熟的精确理论,许多基本技术问题得不到理论解释。 Although the study based on the turbulence has been a hundred years, but the exact date has not yet mature theory, many of the fundamental technical problems are not theoretical explanation.

[0003] 对于粘性流体的层状运动,流体微团的轨迹没有明显的不规则脉动。 [0003] No significant irregularities pulsation motion to laminar viscous fluid, the fluid trajectory micelles. 相邻流体层间只有分子热运动造成的动量交换。 Only the fluid between adjacent layers of momentum caused by the movement of the heat exchange elements. 层流计算也发展的比较成熟。 Calculation layer flow is also more mature development.

[0004] 对于不涉及流体状态的工程计算中,比如只需得知流体热物性的工程实践中,层流状态的工作量要远远低于湍流状态,因此将湍流转变为层流再进行温度场或压力场的采集将有效降低工作难度。 [0004] For engineering calculation does not involve a fluid state, such that only the physical properties of engineering practice thermal fluid, the flow state of the workload of the layer to be much lower than the turbulent state, a laminar flow into a turbulent temperature then field collection or pressure field will effectively reduce the difficulty of the work. 例如,当进行油水乳状液的抽取时,对于油包水型乳状液,一般处于层流条件下,但对于水包油型油水乳状液一般处于紊流条件下,因此为使计算时不牵扯紊流控制方程,亦将紊流条件下的流体变为层流状态,从而对流体进行加热使其温度场变化从而应用反问题方法推算出混合液组分。 For example, when the extraction of oil and water emulsions, water in oil for the emulsion, under laminar flow conditions in general, but for the water-oil-water emulsion is generally under turbulent conditions, so that the calculation is not involved orderly flow equations, fluid under turbulent flow conditions will also become a laminar flow state, so that the fluid is heated to a temperature so that the application field variation methods calculate the inverse problem of mixture components.

发明内容 SUMMARY

[0005]本发明的目的是针对解决现有技术中存在的上述缺陷,提出了一种湍流变层流套管加热温度场采集装置,其结构简单,使用方便,不仅可以将高速湍流流体转变为慢速层流流体,而且还可以采集对流体的速度和温度场的数值。 [0005] The present invention is directed to solve the above drawbacks of the prior art, and proposes a transition layer turbulent flow sleeve heating temperature field collecting apparatus is simple in structure, easy to use, not only high velocity turbulent fluid into slow flow of the fluid layer, but also the value of the rate of fluid acquisition and temperature field.

[0006]本发明的技术方案是:一种湍流变层流套管加热温度场采集装置,其中,包括外管和内管,内管设置在外管内,内管沿流体流动方向设置,内管固定在外管内,内管沿流体流动方向的前部依次设置整流栅和节流网,整流栅设置在内管的前端,内管的中部设有测速仪,内管沿流体流动方向的后部依次设置热电偶埋设处和节流网,其中节流网设置在内管的后端,沿内管的圆周方向间隔设置数个热电偶埋设处,热电偶固定在热电偶埋设处,内管的外表面缠绕有电阻丝。 [0006] aspect of the present invention is: A turbulent flow sleeve Temperature field change layer acquisition means, comprising an inner tube and an outer tube, an inner tube disposed within the outer tube, an inner tube disposed in the fluid flow direction, a fixed inner tube within the outer tube, the inner tube portion in the front direction of fluid flow are sequentially disposed distal section and a rectifying gate drift, flow control grid provided in the inner tube, the inner tube is provided with a central speedometer, the rear portion of the inner tube in the direction of fluid flow are sequentially provided embedded thermocouple and the drift section, wherein the rear end of the inner section disposed drift tube, the inner tube in the circumferential direction spaced at a plurality of thermocouples embedded thermocouple embedded thermocouple is fixed, the outer surface of the inner tube wound resistance wire.

[0007] 本发明中,所述外管和内管均为石英管。 [0007] In the present invention, the outer tube and the inner tube are quartz tube.

[0008]所述内管可以通过内管支撑架固定在外管内。 [0008] The inner tube may be fixed to the support frame through the inner tube within the outer tube.

[0009]所述整流栅内设置了一组交错排列的导流叶片,通过导流叶片梳理流体,使流体平稳有序的通过。 [0009] The rectification gate within a set of guide vanes are provided staggered by combing fluid guide vanes, so that the smooth and orderly fluid.

[0010]所述的测速仪可以为毕托管,毕托管的一端设置在内管中,另一端设置在外管的外侧,通过毕托管可以准确测出内管中液体的流速。 According to [0010] may be a Pitot speedometer, provided at one end of the pitot tube and the inner, and the other end is provided outside the outer tube, can accurately measure the flow rate of the liquid through the inner tube Pitot.

[0011 ]本发明的有益效果:本发明结构简单,使用方便,实现了对管道中流体物性求解时,使管道中复杂流体即湍流流体变为简单流体即层流流体,同时对流体进行速度及温度场变化的米集,大大降低了工作量及计算量。 [0011] Advantageous effects of the present invention are: structure of the present invention is simple, easy to use, the realization of the pipe in fluid properties solving the conduit complex fluids i.e. fluid turbulence becomes i.e. for laminar simple fluid, while the fluid velocity and set the temperature field variation meters, greatly reducing the workload and the amount of calculation.

附图说明 BRIEF DESCRIPTION

[0012]图1是本发明的结构示意图; [0012] FIG. 1 is a structural diagram of the present invention;

[0013]图2是套管内流体速度矢量模拟图; [0013] FIG. 2 is a velocity vector of the fluid within the sleeve of FIG simulation;

[00 M]图3是入口处套管内流体速度矢量模拟图; [00 M] FIG 3 is a velocity vector within the fluid inlet of the cannula of FIG simulation;

[0015]图4是管内横断面瞬时速度图。 [0015] FIG. 4 is a cross section of the instantaneous speed of the inner tube of FIG.

[0016]图中:1外管;2内管;3毕托管;4热电偶埋设处;5内管支撑架;6节流网;7电阻丝.8 整流栅。 [0016] FIG: an outer tube; inner 2; 3 Pitot; thermocouple is embedded at 4; tube support part 5; drift-section 6; 7 .8 resistance wire grid rectifier. ' '

具体实施方式 detailed description

[0017]下面结合附图和实施例对本发明作进一步的说明。 Drawings and embodiments of the present invention will be further described [0017] below in conjunction.

[0018]如图1所示,所述的湍流变层流套管加热温度场采集装置呈管状,包括外管丨和内管2,外管1和内管2均为石英管。 [0018] As shown, the sleeve turbulent becomes laminar heating temperature field tubular collecting apparatus 1, includes an outer tube and the inner tube 2 Shu, the outer tube 1 and inner tube 2 are both the quartz tube. 内管2设置在外管丨内,内管2沿流体流动方向设置,内管2通过内管支撑架5固定在外管1内。 An inner tube disposed within the outer tube 2 Shu, the inner tube 2 is provided in the fluid flow direction, the tube support frame 5 fixed to the inner tube within the outer tube 1 through 2. 内管2沿流体流动方向的前部依次设置整流栅8和节流网6, 整流栅8设置在内管2的前端,设置整流栅的作用是流体通过管道时,由于流向变化,流体分布不均造成能量损失,导致管道流动阻力增大,流体容易造成湍流。 The front portion of the inner tube 2 along the direction of fluid flow rectifying effect of the gate sequentially disposed drift sections 6 and 8, flow control grid 8 is provided the inner tube distal end, flow control grid provided in the fluid 2 through the conduit, since the changes in flow direction, the fluid distribution is not are energy losses, leading to increased resistance to flow conduit, the fluid is likely to cause turbulent flow. 整流栅8里设置了一组交错排列的导流叶片,通过导流叶片梳理流体,使流体平稳有序的通过。 Flow control grid 8 is provided in a staggered set of guide vanes, combing through the fluid guide vanes, so that the smooth and orderly fluid. 节流网6的作用是充分增大管流阻力,以降低进管流速。 Action section drift tube 6 is sufficiently increased flow resistance to reduce the flow rate into the tube. 通过整流栅8和节流网6,使进入内管2内的流体形成稳定层流。 By rectifying the gate 8 and the drift sections 6, fluid entering the inner tube 2 to form a stable laminar flow.

[0019]内管2的中部设有测速仪,本实施例采用的测速仪为毕托管3,毕托管3的一端设置在内管2中,另一端设置在外管1的外侧,通过毕托管可以准确测出内管中液体的流速。 [0019] The inner tube 2 is provided with a central speedometer, tachometer employed in the present embodiment is a Pitot tube 3, 3 disposed at one end of the pitot tube and the inner 2, and the other end is provided outside of the outer tube 1, through Pitot accurately measure the flow rate of the liquid in the inner tube.

[0020]内管2沿流体流动方向的后部依次设置热电偶埋设处4和节流网6,其中节流网6设置在内管2的后端。 Back tube 2 along the direction of fluid flow [0020] successively a thermocouple embedded within the drift sections 4 and 6, wherein the section of the rear end of the inner tube 6 is provided with nets 2. 设置节流网6的目的是降低内管中流体的流速,使内管2形成满液状态。 Object setting section 6 is to reduce the drift velocity of the fluid in the pipe, the inner pipe 2 is formed full liquid state. 沿内管2的圆周方向间隔设置多个热电偶埋设处4,本实施例设置了六个热电偶埋设处4,热电偶固定在热电偶埋设处,通过热电偶采集内管2内的流体温度场。 A plurality of thermocouples embedded at intervals along the inner circumferential direction of the tube 2, 4, the present embodiment is provided at the six thermocouples 4 are embedded, the embedded thermocouple is fixed to the thermocouple, the temperature of the fluid collection tube 2 through the inner thermocouple field.

[0021]内管2的外表面缠绕有电阻丝7,通过电阻丝7对内管2内的流体均匀加热。 [0021] The outer surface of the inner tube 2 is wound a resistance wire 7 is uniformly heated by the fluid within the inner tube 2 resistance wire 7.

[0022]如图3和图4所示,在内管入口处,速度变化明显,说明内管减速效果明显。 [0022] As shown in FIG. 3 and FIG. 4, the entrance to the inner tube, the rate of change significantly, indicating that significant effect of reduction of the inner tube. 在合适条件下,能够使内管流体变为流速较低的层流,如图2和图4所示。 Under appropriate conditions, enable the inner tube to a lower flow rate of the fluid flow layer, as shown in FIGS. 2 and 4.

[0023]本发明的工作原理如下所述:当有较高流速流体以湍流形式进入管道时,在内管2 管口附近,先经历整流栅8,对流体进行梳理,然后进入内管中的流体将通过节流网6,此时内管中流体的流速将显著降低。 [0023] The working principle of the present invention is as follows: When a higher flow rate of fluid into the conduit in the form of turbulent flow, the inner tube 2 near the opening, the first flow control grid 8 experience, sort of fluid, and then into the inner tube the drift section 6 through the fluid, the flow rate of the fluid in the pipe at this time will be significantly reduced. 当流体在内管缓慢满液流动时,开启电阻丝7加热,使内管流体有较明显的温升,同时由热电偶记录下流体温度场变化及时间,以便之后对流体物性及其他因素的计算。 When the inner tube gradually flooded fluid flow, the on resistance heating wire 7, the inner tube has obvious fluid temperature, while the temperature of the fluid and the field change recording time of a thermocouple, so that after the fluid properties and other factors calculation.

Claims (5)

  1. 1. 一种湍流变层流套管加热温度场采集装置,其特征在于:包括外管(1)和内管⑵,内管⑵设置在外管⑴内,内管⑵沿流体流动方向设置,内管⑵固定在外管⑴内,内管⑵ 沿流体流动方向的前部依次设置整流栅(8)和节流网(6),整流栅(8)设置在内管(2)的前端,内管(2)的中部设有测速仪,内管⑵沿流体流动方向的后部依次设置热电偶埋设处(4) 和节流网(6),其中节流网(6)设置在内管(2)的后端,沿内管(2)的圆周方向间隔设置数个热电偶埋设处(4),热电偶固定在热电偶埋设处,内管(2)的外表面缠绕有电阻丝(7)。 A turbulent becomes laminar flow sleeve heating temperature field collecting apparatus, characterized by: comprising an outer tube (1) and ⑵ inner tube, an inner tube disposed within the outer tube ⑵ ⑴, ⑵ inner tube disposed in the fluid flow direction, the an inner tube fixed to the outer tube ⑵ ⑴, ⑵ inner tube in the direction of fluid flow rectifying sequentially gate the front portion (8) and the drift section (6), flow control grid (8) disposed on the inner pipe end (2), the inner tube middle (2) is provided with a speedometer, the rear portion of the inner tube along the direction of fluid flow ⑵ sequentially disposed a thermocouple embedded at (4) and the drift section (6), wherein the drift section (6) disposed on the inner tube (2 ) rear end, along the inner pipe (2) is provided a plurality of circumferentially spaced thermocouples embedded at (4), a thermocouple embedded thermocouple is fixed, the inner tube (2) of resistance wire wound around the outer surface (7) .
  2. 2. 根据权利要求1所述的湍流变层流套管加热温度场采集装置,其特征在于:所述外管(1) 和内管⑵均为石英管。 The turbulence of the casing 1 becomes a laminar flow field heating temperature collecting apparatus as claimed in claim wherein: said outer tube (1) and the inner tube are ⑵ quartz tube.
  3. 3. 根据权利要求1所述的湍流变层流套管加热温度场采集装置,其特征在于:所述内管(2) 通过内管支撑架⑸固定在外管⑴内。 The turbulence of the casing 1 becomes a laminar flow field heating temperature collecting apparatus as claimed in claim wherein: the inner tube (2) fixed to the outer support frame ⑸ ⑴ tube through the inner tube.
  4. 4. 根据权利要求1所述的湍流变层流套管加热温度场采集装置,其特征在于:所述整流栅(8)内设置有交错排列的导流叶片。 The turbulence of the casing 1 becomes a laminar flow field heating temperature collecting apparatus as claimed in claim wherein: said flow control grid (8) there are provided guide vanes staggered.
  5. 5.根据权利要求1所述的湍流变层流套管加热温度场采集装置,其特征在于:所述的测速仪为毕托管(3),毕托管⑶的一端设置在内管(2)中,另一端设置在外管(1)的外侧。 The turbulence of the casing 1 becomes a laminar flow field heating temperature collecting apparatus as claimed in claim wherein: said Pitot speedometer (3), provided at one end hosted ⑶ Bi inner tube (2) the other end of the outer tube is provided (1) the outside.
CN 201610202947 2016-03-31 2016-03-31 Turbulent laminar flow variable Temperature field collecting apparatus sleeve CN105673626B (en)

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JP2000146652A (en) * 1998-11-05 2000-05-26 Fuji Electric Co Ltd Mass flow sensor
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CN1603637A (en) * 2004-10-28 2005-04-06 上海交通大学 Method for controlling turbulent flow and heat conduction character of drag reduction fluid
CN1688871A (en) * 2002-08-29 2005-10-26 株式会社山武 Commutating device
CN104565592A (en) * 2015-01-23 2015-04-29 浙江大学 Heat tracing turbulent layer fluidized drag-reducing flow conveying pipe and method thereof
CN205639181U (en) * 2016-03-31 2016-10-12 中国海洋大学 Torrent becomes laminar flow sleeve pipe heating temperature field collection system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840051A (en) * 1971-03-11 1974-10-08 Mitsubishi Heavy Ind Ltd Straightener
US5495872A (en) * 1994-01-31 1996-03-05 Integrity Measurement Partners Flow conditioner for more accurate measurement of fluid flow
JP2000146652A (en) * 1998-11-05 2000-05-26 Fuji Electric Co Ltd Mass flow sensor
CN1688871A (en) * 2002-08-29 2005-10-26 株式会社山武 Commutating device
JP2005024420A (en) * 2003-07-03 2005-01-27 Matsushita Electric Ind Co Ltd Fluid measuring device
CN1603637A (en) * 2004-10-28 2005-04-06 上海交通大学 Method for controlling turbulent flow and heat conduction character of drag reduction fluid
CN104565592A (en) * 2015-01-23 2015-04-29 浙江大学 Heat tracing turbulent layer fluidized drag-reducing flow conveying pipe and method thereof
CN205639181U (en) * 2016-03-31 2016-10-12 中国海洋大学 Torrent becomes laminar flow sleeve pipe heating temperature field collection system

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