CN105403728A - Measurement device of flow rate of dusty gas and measurement method thereof - Google Patents

Measurement device of flow rate of dusty gas and measurement method thereof Download PDF

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Publication number
CN105403728A
CN105403728A CN 201510985242 CN201510985242A CN105403728A CN 105403728 A CN105403728 A CN 105403728A CN 201510985242 CN201510985242 CN 201510985242 CN 201510985242 A CN201510985242 A CN 201510985242A CN 105403728 A CN105403728 A CN 105403728A
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pressure
negative pressure
pipe
positive
flow rate
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CN 201510985242
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Chinese (zh)
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CN105403728B (en )
Inventor
陈宇
陈献春
陈稻香
陈涛
曾忠旺
林阿平
王寅
张民赦
薛建成
林林星
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国网福建省电力有限公司
国家电网公司
国网福建省电力有限公司电力科学研究院
福建中试所电力调整试验有限责任公司
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid

Abstract

The invention relates to a measurement device of flow rate of dusty gas and a measurement method thereof. The measurement device comprises more than one positive pressure taking pipe and a negative pressure taking pipe. The positive pressure taking pipes stretch into a to-be-measured pipeline and are parallel to air flows in the to-be-measured pipeline. Positive pressure taking openings and a negative pressure taking opening are respectively arranged in the positive pressure taking pipes and the negative pressure taking pipe. A positive pressure flow guiding mechanism is arranged at each of the positive pressure taking openings. A negative pressure flow guiding mechanism is arranged at the negative pressure taking opening. The positive pressure taking pipes and the negative pressure taking pipe stretch out of the to-be-measured pipeline and then are connected with a differential pressure gauge via a lead-out pipe which is perpendicular to the positive pressure taking pipes and the negative pressure taking pipe. The positive pressure taking pipes are communicated with the positive pressure end of the differential pressure gauge. The negative pressure taking pipe is communicated with the negative pressure end of the differential pressure gauge. The lead-out pipe and the to-be-measured pipeline are sealed by a sealing cover. The outer side face of the sealing cover is fixed at the opening of the to-be-measured pipeline via multiple fixing buckles. The beneficial effects are that the measurement device is simple in structure, convenient to operate and capable of preventing blocking phenomena caused by dusty gas during the measurement; effects on measurement results are reduced; and measurement precision is improved.

Description

一种含尘气体流速的测量装置及其测量方法 A measuring apparatus and measuring method of the dust-containing gas flow rate

技术领域 FIELD

[0001] 本发明涉及气体流速测量领域,尤其涉及一种含尘气体流速的测量装置及其测量方法。 [0001] The present invention relates to the field of measuring the gas flow rate, measuring apparatus and in particular relates to a method for measuring the dust-containing gas flow rate.

背景技术 Background technique

[0002] 含尘气体流速的测量一直存在堵塞测量装置的问题,尤其是气流垂直流动的情况,目前常用的测量装置在应用时都会出现一些问题,例如笛形管、文丘里、靠背管等都可能造成堵塞,单个的文丘里管或靠背管还会因为测量位置的代表性不行而影响使用,机翼形测量装置可以设置排灰功能,但是这不仅增加运行操作的复杂程度,而且仍然可能影响测量或造成堵塞。 [0002] Measurement dust clogging the gas flow rate measuring device there has been a problem, especially in the case of vertical air flow, the most commonly used measurement device will be some problems in the application, e.g. piccolo tube, venturi, so backrest tube may cause blockage, a single representative measurement of the venturi because not affect the use position, the wing shape measurement apparatus can be provided ash function, but this not only increases the complexity of running operations, but may still affect the backrest tube or tubes will measurement or cause clogging.

发明内容 SUMMARY

[0003] 本发明的目的是针对以上不足之处,提供了一种一含尘气体流速的测量装置及其方法,防止在测量过程中含尘气体造成的堵塞现象。 [0003] The object of the present invention is to solve the above shortcomings, there is provided an apparatus and method for measuring a dusty gas flow, the dust-laden gas to prevent clogging during the measurement result.

[0004] 本发明解决技术问题所采用的方案是:一种含尘气体流速的测量装置,包括一个以上伸入至被测管道内且与被测管道内气流平行的正压取压管和一个负压取压管,所述正压取压管和负压取压管的底端分别开设有正压取压口和负压取压口,所述正压取压口处设有一正压导流机构;所述负压取压口处设有一负压导流机构;所述正压取压管和负压取压管分别经一与其垂直的引出管伸出至被测管道外与一差压计连接,所述正压取压管与该差压计的正压端相连通,所述负压取压管与该差压计的负压端相连通;所述引出管与被测管道经一密封盖密封,所述密封盖的外侧面经若干个固定扣固定于被测管道的开口处。 [0004] The present invention solves the technical problem solution is: A dusty gas flow rate measuring apparatus, comprising more than one conduit extending into and taken into the test tube and pressure with a positive pressure air flow conduit measured parallel pressure pipe bottom end of the negative pressure, positive pressure and negative pressure pipe to take to take pressure tube defines respectively positive and negative taps taps, the positive pressure port is provided at a pressure guide flow means; said negative pressure port is provided at a negative pressure flow means; said negative and positive pressure measuring tube pressure pipes are extended through a pipe perpendicular thereto and a lead to the measured difference between the outer pipe pressure gauge connected to a pressure take positive pressure pipe end with the differential pressure meter communication, the negative pressure taking the tube end in communication with the negative pressure differential pressure gauge; and a withdrawal pipe for the pipe by a seal cap, an outer side surface of the closure by a number of fixed buckle fixed to the opening for the pipe.

[0005] 进一步的,所述正压导流机构包括一第一固定架、设置于所述第一固定架上沿正压取压管底端后侧向下且向外延伸的第一后导流片和若干个沿纵向等间隔设置于第一后导流片前侧的第一导流片,所述第一导流片呈弧状;所述负压导流机构包括一第二固定架、设置于所述第二固定架上沿负压取压管底端后侧向下且向外延伸的第二后导流片和若干个沿纵向等间隔设置于第二后导流片前侧的第二导流片,所述第二导流片呈平面状。 [0005] Further, the guide means comprises a positive first holder, the first holder disposed on said positive pressure along the rear bottom end of the back guide to take a first pressure tube downwardly and outwardly extending flow sheet and a plurality of longitudinally equally spaced fins to the front of the first rear side of the first baffle, the first baffle plate in an arc shape; said negative pressure means comprises a second guide holder, a second holder disposed on said second negative pressure take-rear direction rear side of the bottom end of the baffle tube extending downwardly and outwardly pressed and a plurality of longitudinally disposed at equal intervals in the front side of the second rear baffle a second baffle, the second baffle is planar.

[0006] 进一步的,各相邻第一导流片和第二导流片前端的间距分别相等,并且各第一导流片的后端距离第一后导流片等于三分之一的正压取压口的宽度,各第二导流片的后端距离第二后导流片等于三分之一的负压取压口的宽度。 [0006] Further, the spacing of the adjacent first and second flow guide plate are equal sheet leading end, and the rear end of each of the first baffle plate a distance equal to the first rear third of the positive guide the width of the pressure taps, the rear end of each of the second guide plate is equal to one third of the distance from the second guide vane vacuum taps width.

[0007] 进一步的,所述第一固定架装设于所述第一导流片和第一后导流片之间且位于所述第一后导流片的端部;所述第二固定架装设于所述第二导流片和第二后导流片之间且位于所述第二后导流片的端部; [0007] Further, the first holder is mounted between the first guide plate and the guide plate and positioned a first rear end portion of the first rear guide plate; the second fixing frame mounted between the second guide plate and the second baffle located in said rear end portion of the second rear guide plate;

进一步的,所述密封盖的内侧面设有用于保持被测管道开口处流速的凸台,所述凸台内填设有保温材料,所述密封盖的外侧面设有用于与所述固定扣配合固定的凸棱。 Further, the inner surface of the closure opening conduit is provided for holding the measured flow rate of the boss, the boss is provided with insulation material in the filling station, provided with an outer side surface of the closure for engagement with the retaining buckle with fixed ribs.

[0008] 进一步的,所述固定扣呈U形状,所述固定扣的两侧扣设于所述密封盖两侧,且经一螺钉穿过所述固定扣朝外的一侧固定。 [0008] Further, the retaining buckle is U-shape, both sides of the retaining buckle button provided on both sides of the closure and is fixed by a screw passing through one side of the retaining buckle outwardly.

[0009] 进一步的,所述密封盖的密封面和管道开口的密封面之间填设有密封材料。 [0009] Further, between the sealing surface and the sealing surface of the closure opening conduit filled with sealing material.

[0010] 本发明还提供一种如上述所述的一种含尘气体流速的测量装置的测量方法,分别设置一个或一个以上的正压测点和负压测点,正压测点设置于正压取压管上且连接差压计的正压端;负压测点为设置于负压取压管上且连接差压计的负压端;将正压取压管和负压取压管与被测管道内气流平行布置一段后经一引出管通过密封盖引出到流道外,并接往差压计,通过差压计计算出正压测点和负压测点的压力差,获得被测管道内的气体流速。 [0010] The present invention also provides a method of measuring means for measuring the flow rate of said one of the dust-laden gas, are provided one or more positive and negative measuring point measuring point, pressure measuring point is provided in take a positive pressure pipe and connected to the positive end of the differential pressure gauge; negative negative pressure measuring point is arranged to take a differential pressure gauge connected to the pressure pipe and a negative pressure end; positive pressure and negative pressure measuring tube pressure after the test tube and parallel to the gas duct via a withdrawal pipe section is arranged to lead through the outer flow passage a sealing cap, and connected to the differential pressure gauge, a differential pressure gauge pressure calculated by the pressure measuring point and the measuring point of the negative pressure difference, to obtain the measured gas flow rate in the conduit.

[0011] 进一步的,所述正压测点为七个,负压测点为一个,并且正压测点在被测管道内呈环形均匀间隔分布,负压测点位于被测管道中部。 [0011] Further, the measuring point for the seven positive, a negative pressure measuring point and the measuring point pressure annularly spaced uniformly distributed within the process piping, in the middle of the negative pressure measuring point for the pipe.

[0012] 与现有技术相比,本发明有以下有益效果:通过将正压取压管和负压取压管与被测管道内含尘气体的流向自上而下平行,测量气体流速在正压端产生的正压和在负压端产生的负压的压力差,通过所测得气体的正压和负压的压差获得气体的流速。 [0012] Compared with the prior art, the present invention has the following advantageous effects: Take flow pressure tube and the inner conduit containing gas measured by taking the positive and negative pressure tube from top to bottom in parallel, measure the gas flow rate positive pressure and a negative pressure side end of the negative pressure generated generate a difference, the flow rate of gas obtained by the pressure differential measured positive and negative pressure gas. 通过位于正压导流机构和负压导流机构,防止在测量过程中含尘气体造成的堵塞现象,减小对测量结果的影响,提高测量精度。 By means located in positive and negative flow diversion means to prevent the clogging phenomenon during the measurement gas caused by dust, reduce the influence on the measurement results, improve the measurement accuracy. 另外,通过密封盖与被测流道开口处通过固定扣紧密配合密封,增加被测流道的气密性,提高测量的精度。 Further, the measured flow through the passage opening of the cover and the mating fixed pin seal, increased air tightness test flow path, improve the measurement accuracy. 密封盖的设计主要是为了安装、检修维护的方便,通常若安装测量装置,需要更换整个测量段,即整段流体的流道,检修、维护时需要割开测量段,施工困难;采用开孔的方法施工配合密封盖更佳容易。 The sealing cap is designed primarily for the installation, repair and maintenance is convenient, when mounting the measuring device usually requires replacement of the entire measurement period, i.e., the whole of the fluid flow path, repair, maintenance needs to cut the measurement period, construction difficulties; open-pore the method of construction with better sealing cap easily.

附图说明 BRIEF DESCRIPTION

[0013] 下面结合附图对本发明专利进一步说明。 [0013] DESCRIPTION OF DRAWINGS Further the present patent disclosure.

[0014]图1为本发明实施例的测量装置的结构示意图。 [0014] FIG. 1 is a schematic structure of the measurement apparatus according to an embodiment of the present invention.

[0015]图2为本发明实施例的测量装置正向导流机构的结构示意图。 [0015] FIG. 2 is a schematic configuration mechanism forward flow measuring apparatus according to an embodiment of the present invention.

[0016]图3为本发明实施例的测量装置负向导流机构的结构示意图。 [0016] Fig 3 a schematic view of the structure of the negative measuring device according deflector mechanism embodiment of the present invention.

[0017] 图4为本发明实施例的6个正压测点,1个负压测点的结构示意图。 1 a schematic structure of negative pressure measuring point six measuring points embodiment [0017] FIG. 4 of the present invention.

[0018] 图5为本发明实施例的16个正压测点,1个负压测点的结构示意图。 1 a schematic view of the negative pressure measuring points 16 of the pressure measuring points Example Embodiment [0018] FIG. 5 of the present invention.

[0019] 图中:1-正压取压管;2-引出管;3_密封盖;30_凸台;4_差压计;5_固定扣;6-负压取压管;7_被测管道;8_正压取压口;9_正压导流机构;90_第一后导流片;91_第一导流片;92_第一固定架;10_负压取压口;11_负压导流机构;110-第二后导流片; [0019] Reference Numerals 1: Pressure pipe pressure; 2- withdrawal pipe; 3_ sealing cap; 30_ boss; 4_ pressure gauge; 5_ retaining buckle; 6- take negative pressure pipe; 7_ the process piping; 8_ positive pressure port; 9_ pressure diversion mechanism; 90_ first rear fins; 91_ a first guide plate; 92_ a first holder; 10_ negative pressure mouth; negative pressure diversion mechanism 11_; 110- second rear baffle;

111-第二导流片;112_第二固定架;12-正压测点;13_负压测点。 111- second baffle; 112_ second retainer; 12- pressure measuring points; 13_ negative pressure measuring points.

具体实施方式 Detailed ways

[0020] 下面结合附图和具体实施方式对本发明进一步说明。 [0020] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0021] 如图1〜3所示,本发明实施例提供一种含尘气体流速的测量装置,包括一个以上伸入至被测管道内且与被测管道内气流平行的正压取压管1和一个负压取压管6,所述正压取压管1和负压取压管6的底端分别开设有正压取压口8和负压取压口10,所述正压取压口8处设有一正压导流机构9 ;所述负压取压口10处设有一负压导流机构11 ;所述正压取压管1和负压取压管6分别经一与其垂直的引出管2伸出至被测管道7外与一差压计4连接,所述正压取压管1与该差压计4的正压端相连通,所述负压取压管1与该差压计4的负压端相连通;所述引出管2与被测管道7经一密封盖3密封,所述密封盖3的外侧面经若干个固定扣5固定于被测管道7开口处。 [0021] As shown in FIG 1~3 embodiment of the present invention provides an apparatus for measuring the flow rate of dust-laden gas, comprising more than one pipe and extend into the test tube and to take pressure within the pressure measured parallel to the gas flow pipe 1 and takes a negative pressure pipe 6, the pressure tube 1 and the negative pressure taking taking each bottom end the pressure pipe 6 defines a positive pressure port 8 and a negative pressure taps 10, taking the pressure the pressure port 8 is provided with a positive guide means 9; at the negative pressure port 10 is provided with a suction guide means 11; positive pressure and negative pressure measuring tube 1 are taken through a pressure pipe 6 with its 2 extends perpendicular to the lead pipe for the pipe 7 is connected to an outer differential pressure gauge 4, a positive pressure tube 1 and take the positive terminal of a differential pressure gauge 4 in communication, the negative pressure pipe takes 1 4 with the vacuum gauge differential pressure end communicating; 2 and the lead pipe for the pipe 7 by a seal 3 seal cover 3 is fixed by the outer side surface a plurality of fastener 5 fixed to the test conduit 7 opening.

[0022] 从上述可知,本发明的有益效果在于:通过将正压取压管1或负压取压管6与被测管道7内含尘气体的流向平行,测量气体流速在测量装置上形成差压,通过所测得气体的正压和负压的压差获得气体的流速。 [0022] From the foregoing, advantageous effects of the present invention is: by taking the positive or negative pressure tube 1 Pressure tube 6 in parallel with the flow direction within the test conduit 7 containing gas, measuring the gas flow rate measuring device is formed differential pressure, flow rate of gas obtained by the pressure difference of the measured positive and negative pressure gas. 通过正压导流机构9和负压导流机构11,防止在测量过程中含尘气体造成的堵塞现象,减小对测量结果的影响,提高测量精度。 Positive pressure and negative pressure flow means 9 guide mechanism 11 to prevent the clogging phenomenon during the measurement gas caused by dust, reduce the influence on the measurement results, improve the measurement accuracy. 另外,通过密封盖3与被测流道开口处通过固定扣5紧密配合密封,增加被测流道的气密性,提高测量的精度。 Further, by opening the seal cover 3 and the measured flow passage through the fixed snap fit tightly seal 5, increased air tightness test flow path, improve the measurement accuracy. 图1中正压取压管部分重叠。 FIG 1 taken positive pressure pipe partially overlap.

[0023] 在本实施例中,所述正压导流机构9包括一第一固定架92、设置于所述第一固定架92上沿该正压取压管1底端后侧向下且向外延伸的第一后导流片90和若干个沿纵向等间隔设置于第一后导流片90前侧的第一导流片91,所述第一导流片91呈弧状;所述负压导流机构11包括一第二固定架112、设置于所述第二固定架112上沿负压取压管6底端后侧向下且向外延伸的第二后导流片110和若干个沿纵向等间隔设置于第二后导流片110前侧的第二导流片111,所述第二导流片111呈平面状。 [0023] In the present embodiment, the guide mechanism 9 includes a positive first holder 92, a first holder disposed on the rear side takes a bottom end of the pressure tube downwardly and along the pressure on 92 the first rear baffle 90 extending outwardly and a plurality of longitudinally equally spaced fins 90 arranged in front of the first rear side of the first guide plate 91, the first guide plate 91 in an arc shape; the negative pressure means 11 comprises a second guide holder 112, the negative pressure is provided in the second 112 taken along the second holder 6 after the bottom end of the rear baffle pressure pipe 110 extending downwardly and outwardly and a plurality of equally spaced longitudinally along the second guide plate 111 disposed on the front side of the second rear guide plate 110, the second guide plate 111 is planar.

[0024] 如图2所示,正向导流机构中第一后导流片90沿着正压取压口8向下逐渐变宽,锥度可以取30° (单侧15°,垂直方向)左右,第一后导流片90的弯曲程度从下到上逐渐变小,下端基本为水平,如图2所示第一后导流片90的下部向前伸出1-2倍正压取压口8的宽度,高度为3-5倍取压口的宽度,上端是垂直的,与取压口平滑连接。 About [0024] 2, the first forward guide baffle means 90 along the positive pressure port 8 is gradually widened downward, the taper can take 30 ° (one-sided 15 °, the vertical direction) , the degree of curvature of the first guide plate 90 gradually decreases from bottom to top, the lower end of a substantially horizontal, as shown in the lower portion of the first guide plate 90 shown in FIG. 2 projecting forwardly positive pressure 1-2 times the width of the opening 8, the height of the taps 3-5 times the width of the upper end of a vertical taps connected smoothly. 第一导流片91的宽度一般可以取正压取压口8或相同高度位置的第一后导流板90的宽度的1.4倍左右,导流片的数量可以为5-7片,各相邻第一导流片91前端的水平间距应该相等,离正压取压口8最近的一片导流片的弯曲方向的宽度大约取相应方向正压取压口8宽度的1.5倍左右,呈下凹的形状,外侧较高,第一导流片91前端与正压取压口8前端的水平间距为1/3-1/2正压取压口8宽度,第一导流片91与正压取压口8前端的垂直间距也为1/3-1/2正压取压口8宽度,第一导流片91前端上翘60-90° (与水平面夹角),导流片后端(内侧)程水平或略为上翘;各第一导流片91后端(内侧)距离后导流板约1/3取压口宽度。 The width of the first baffle 91 can generally take positive pressure port 8 is about 1.4 times the width of the first or the baffle 90 the same height, the number of baffle plate may be 5-7, and the phases o a first horizontal pitch baffle distal end 91 should be equal, the curve direction taken from the positive pressure port 8 of the guide vane nearest a width direction of the respective pressure taken approximately 1.5 times the width of the pressure port 8, showing the a concave shape, the higher the outside, the front end of the first guide plate 91 and positive pressure port of the front end of the horizontal pitch of 8 1 / 3-1 / 2 the width of the positive pressure measuring port 8, a first guide plate 91 and the positive pressure taps front end 8 is also a vertical spacing of 1 / 3-1 / 2 the width of the pressure taps 8, the first guide plate 91 distal upturned 60-90 ° (the horizontal angle), the guide vane end (inner) level or slightly upturned process; the rear end of each first guide plate 91 (inner) rear deflector from about 1/3 the width of the taps.

[0025] 如图3所示,负压导流机构11与正压导流机构9的区别之处在于:第二导流片111是平面的,并且导流方向与第一导流片不同。 [0025] As shown in FIG. 3, guide means 11 in that a negative pressure difference between the pressure and the flow guiding means at 9: second flow guide plate 111 is planar, and the flow direction of the first guide vanes different.

[0026] 在本实施例中,各相邻第一导流片91和第二导流片111前端的间距分别相等,并且各第一导流片91的后端距离第一后导流片90等于三分之一的正压取压口8的宽度,各第二导流片111的后端距离第二后导流片110等于三分之一的负压取压口10的宽度。 [0026] In the present embodiment, the distal end 111 of the spacing of the adjacent first and second guide baffle plate 91 are equal, and the rear end of each of the first guide plate 91 from a first rear baffle 90 pressure is equal to one third of the width of the pressure port 8, the rear end of each of the second guide plate 111 is equal to the distance 110 of the second third of the rear guide sheet width negative pressure port 10. 所述第一导流片91和第二导流片111的前后端需打磨成圆形,并且抛光,以避免积灰。 The first guide plate 91 and the front and rear ends of the second guide plate 111 in a circular be polished, and polishing to avoid fouling. 正压取压管1和引出管2都可以是圆形的也可以用方形的。 Pressure pressure tube 1 and the lead tube 2 may also be a circular square. 本发明取压管1采用方形管,尺寸一般为10-30mm,尺寸太小不利于防止堵塞,对于大尺寸的流道(例如直径2m以上),可以采用较大尺寸的取压口,而引出管2采用圆形或方形的管都可以。 Pressure tube of the present invention uses a square tube, size is generally 10-30mm, small size is not conducive to preventing clogging of the flow path for the large size (e.g. diameter above 2M), may be employed a larger size pressure taps, and leads 2 using a circular or square tube may be a tube.

[0027] 在本实施例中,所述第一固定架92装设于所述第一导流片91和第一后导流片90之间且位于所述第一后导流片90的端部;所述第二固定架112装设于所述第二导流片111和第二后导流片110之间且位于所述第二后导流片110的端部。 [0027] In the present embodiment, the first holder 92 is mounted on the first guide plate 91 and the rear guide plate and positioned a first end of the first sheet 90 between the rear spoiler 90 portion; the second holder 112 is mounted between the second guide plate 111 and the second guide plate 110 and positioned rear end of the second rear guide plate 110.

[0028] 在本实施例中,所述密封盖3的内侧面设有用于保持被测管道7开口处流速的凸台30,所述凸台30内填设有保温材料,所述密封盖3的外侧面设有用于与所述固定扣5配合固定的凸棱。 [0028] In the present embodiment, the inner surface of the closure 3 is provided with an opening 7 for holding the measured flow conduit 30 of the boss, said boss filled with insulation material 30, the closure 3 the outer surface is provided with ribs 5 for fitting with the retaining buckle fixed. 所述凸台30目的在于减少该位置对流动的影响,以保证测量效果,同时,对于温度较高的情况,凸台30内应该装填保温材料。 The boss 30 to reduce the influence of the position of the object to flow in order to ensure the measurement results, while for higher temperatures, the boss 30 to be filled within the insulation material. 凸台30的前部有斜度,这样便于安装。 The front portion of the boss 30 has a slope, it is easy to install. 凸台30的平面与流道的壁面在一个平面上,即不会因为密封盖影响被测管道7内气体的流动,便于安装、检修维护。 The flow channel wall plane 30 of the projection on a plane, i.e., the sealing cap will not affect the flow of the test gas conduit 7, easy installation, repair and maintenance. 凸棱有一条设计在密封盖密封面,有两条设计在流道侧密封面,以加强密封效果。 There is a rib seal cap surface design, there are two design of the sealing surfaces of the flow path side, to enhance the sealing effect.

在本实施例中,所述固定扣5呈U形状,所述固定扣5的两侧扣设于所述密封盖两侧,且经一螺钉穿过所述固定扣5朝外的一侧固定。 In the present embodiment, the U-shape fixture button 5, the retaining buckle provided on both sides of the buckle 5 of the closure on both sides, and by a fixing screw passing through one side of the fastener 5 fixed outwardly . 通过经所述螺钉穿过所述固定扣5 —侧的螺纹孔,并且螺钉底端顶在密封盖上进行固定,而不需要在密封盖中开设螺纹孔,保证密封盖的气密性。 Via said screw fixing through the button 5 - a threaded hole side, top and bottom end of the screw is fixed on the sealing cap, without the need to open a threaded hole in the closure cap, the sealing cap to ensure tightness.

[0029] 在本实施例中,所述密封盖3的密封面和管道开口的密封面之间填设有密封材料。 [0029] In the present embodiment, the closure is provided with a sealing material filled between the sealing surface and the sealing surface of the opening 3 of the duct. 密封材料为止水带、密封圈、密封件等。 The sealing material is a water stop, ring, seals and the like.

[0030] 本发明还提供一种如上述所述的一种含尘气体流速的测量装置的测量方法,通过分别设置一个或一个以上的正压测点12和负压测点13,正压测点12设置于正压取压管1上且连接差压计4的正压端;负压测点13为设置于负压取压管6上且连接差压计4的负压端;将正压取压管1和负压取压管6与被测管道7内气流平行,通过密封盖3盖设于被测管道7的开口处进行密封,通过差压计4计算出正压测点12和负压测点13的压力差,获得被测管道7内的气体流速。 [0030] The present invention also provides a method of measuring one of the above-described dust-containing gas flow rate measuring device, by providing a more positive or a negative pressure measuring points 12 and 13 respectively measuring point, the measured pressure point 12 is provided on the pressure tube 1 and take pressure differential gauge pressure connection end 4; negative pressure measuring point 13 is provided at a negative pressure to take pressure pipe 6 and is connected to the negative pressure end of the differential pressure gauge 4; n pressure pressure pressure tube 1 and the suction tube 6 and the inner conduit 7 measured parallel to the gas flow, the lid 3 is sealed by a sealing cap disposed at the opening for the pipe 7 through 4 to calculate the differential pressure gauge 12 pressure measuring point measuring point 13 and the negative pressure difference in the gas flow rate is obtained for the pipe 7.

[0031] 在本实施例中,所述正压测点12为七个,负压测点13为一个,并且正压测点12在被测管道内呈环形均匀间隔分布,负压测点13位于被测管道中部,如图4所示。 [0031] In the present embodiment, the pressure measuring point 12 is seven, a negative pressure measuring points 13, 12 and the pressure measuring points distributed annularly spaced uniformly within the process piping, the negative pressure measuring point 13 measured in the middle of the pipe, as shown in FIG. 所述正压测点12也可以为6个,负压测点13为一个。 The pressure measuring points 12 may be a 6, 13 is a negative pressure measuring points.

[0032] 本发明还提供一种16个正压测点12和1个负压测点13安装图,如图5所示,其中,位于中部的为负压测点13,其他分叉位置为正压测量点。 [0032] The present invention also provides a pressure measuring points 16 and 12 a negative pressure measuring points 13 installation diagram, shown in Figure 5, wherein a negative pressure in the middle of the measuring point 13, the position of the other bifurcation pressure measuring points.

[0033] 综上所述,本发明提供的一种含尘气体流速的测量装置及其测量方法,结构简单,操作方便,防止在测量过程中含尘气体造成的堵塞现象,减小对测量结果的影响,提高测量精度。 [0033] As described above, the measuring apparatus and measuring method of the present invention, dust-containing gas flow rate to provide a simple structure, convenient operation, to prevent the clogging phenomenon during the measurement gas caused by dust, reducing the measurement results effects, improve measurement accuracy.

[0034] 本发明提供的上列较佳实施例,对本发明的目的、技术方案和优点进行了进一步详细说明,所应理解的是,以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 [0034] The present invention provides the above preferred embodiments, the objectives, technical solutions, and advantages of the present invention will be further described in detail, it should be understood that the above description is only preferred embodiments of the invention only, and without any modifications to limit the present invention within the spirit and principle of the present invention, the, equivalent substitutions, improvements should be included within the scope of the present invention.

Claims (9)

  1. 1.一种含尘气体流速的测量装置,其特征在于:包括一个以上伸入至被测管道内且与被测管道内气流平行的正压取压管和一个负压取压管,所述正压取压管和负压取压管的底端分别开设有正压取压口和负压取压口,所述正压取压口处设有一正压导流机构;所述负压取压口处设有一负压导流机构;所述正压取压管和负压取压管分别经一与其垂直的引出管伸出至被测管道外与一差压计连接,所述正压取压管与该差压计的正压端相连通,所述负压取压管与该差压计的负压端相连通;所述引出管与被测管道经一密封盖密封,所述密封盖的外侧面经若干个固定扣固定于被测管道的开口处。 A gas flow rate measuring apparatus of dust, characterized by: comprising one or more extend into the conduit and the test pressure and the measured pipe pressure taken parallel gas flow tube and a negative pressure pipe to take the pressure tube and the bottom end of negative pressure to take pressure tube defines respectively positive and negative taps taps, the positive pressure port is provided at a positive pressure flow means; said negative pressure take- a negative pressure port provided at diversion mechanism; take the positive and negative pressure pipe pressure pipes are taken through a tube extending perpendicular to the outer lead is connected to a conduit measured differential pressure gauge, the pressure pressure tube end in communication with the differential pressure meter, the negative pressure taking the tube end in communication with the negative pressure differential pressure gauge; and a withdrawal pipe for the pipe by a seal cap, the an outer side surface sealing cap by a plurality of retaining buckle fixed to the opening for the pipe.
  2. 2.根据权利要求1所述的一种含尘气体流速的测量装置,其特征在于:所述正压导流机构包括一第一固定架、设置于所述第一固定架上沿正压取压管底端后侧向下且向外延伸的第一后导流片和若干个沿纵向等间隔设置于第一后导流片前侧的第一导流片,所述第一导流片呈弧状;所述负压导流机构包括一第二固定架、设置于所述第二固定架上沿负压取压管底端后侧向下且向外延伸的第二后导流片和若干个沿纵向等间隔设置于第二后导流片前侧的第二导流片,所述第二导流片呈平面状。 The dust-laden gas flow rate measuring device according to claim 1, wherein: said pressure means comprises a first holder guide, provided on the first holder taken along the pressure after a first baffle downwardly and the bottom end of the rear side of the pressure tube and a plurality of outwardly extending longitudinally disposed at equal intervals in the front of the first rear-side sheet guide baffles first, the first guide plate a curved shape; a second sheet after said negative pressure flow guide means comprises a second holder disposed on the rear side of the second retainer the bottom end of the tube taken along a negative pressure and extending outwardly and downwardly a plurality of longitudinally equally spaced fins to the front of the second rear side of the second baffle, the second baffle is planar.
  3. 3.根据权利要求2所述的一种含尘气体流速的测量装置,其特征在于:各相邻第一导流片和第二导流片前端的间距分别相等,并且各第一导流片的后端距离第一后导流片等于三分之一的正压取压口的宽度,各第二导流片的后端距离第二后导流片等于三分之一的负压取压口的宽度。 A dusty gas flow rate measuring apparatus according to claim 2, wherein: each of the adjacent first guide plate and the second baffle spacing the front end are equal, and each of the first baffle after the rear end of a first distance equal to one third of the baffle width positive pressure port, the second rear end of each guide vane is equal to one third of the distance between the second negative pressure to take the fins the width of the opening.
  4. 4.根据权利要求2所述的一种含尘气体流速的测量装置,其特征在于:所述第一固定架装设于所述第一导流片和第一后导流片之间且位于所述第一后导流片的端部;所述第二固定架装设于所述第二导流片和第二后导流片之间且位于所述第二后导流片的端部。 4. According to a dust-containing gas flow rate measuring apparatus according to claim 2, wherein: the first holder is mounted between the first guide plate and the rear guide plate and positioned a first the rear end of the first guide plate; and said second mounting bracket in the second rear guide plate is between the second guide plate and the second baffle rear end portion .
  5. 5.根据权利要求1所述的一种含尘气体流速的测量装置,其特征在于:所述密封盖的内侧面设有用于保持被测管道开口处流速的凸台,所述凸台内填设有保温材料,所述密封盖的外侧面设有用于与所述固定扣配合固定的凸棱。 5. According to a dust-containing gas flow rate measuring apparatus according to claim 1, wherein: the inner surface of the closure opening conduit is provided for holding the measured flow rate of the boss, the boss inner filling station with insulation material, an outer side surface of the closure is provided with fixing ribs for engaging with the fixing buckle.
  6. 6.根据权利要求5所述的一种含尘气体流速的测量装置,其特征在于:所述固定扣呈U形状,所述固定扣的两侧扣设于所述密封盖两侧,且经一螺钉穿过所述固定扣朝外的一侧固定。 6. According to a dust-containing gas flow rate measuring apparatus according to claim 5, wherein: said substantially U-shaped retaining buckle, the retaining buckle button provided on both sides of the closure on both sides, and by a fixing screw passing through one side of the retaining buckle outwardly.
  7. 7.根据权利要求5所述的一种含尘气体流速的测量装置,其特征在于:所述密封盖的密封面和管道开口的密封面之间填设有密封材料。 A dusty gas flow rate measuring apparatus according to claim 5, wherein: a sealing material is filled between the sealing surface and the sealing surface of the closure opening conduit.
  8. 8.一种如权利要求1所述的一种含尘气体流速的测量装置的测量方法,其特征在于:分别设置一个或一个以上的正压测点和负压测点,正压测点设置于正压取压管上且连接差压计的正压端;负压测点为设置于负压取压管上且连接差压计的负压端;将正压取压管和负压取压管与被测管道内气流平行布置一段后经一引出管通过密封盖引出到流道外,并接往差压计,通过差压计计算出正压测点和负压测点的压力差,获得被测管道内的气体流速。 A method for measuring a measuring apparatus according to a dust-containing gas flow rate claim, wherein: at least one set of a positive pressure or a negative pressure measuring point and the measuring point, pressure measuring point is provided to take on a positive pressure pipe and connected to the positive end of the differential pressure gauge; negative pressure measuring point is provided and connected to a negative pressure differential pressure gauges take negative pressure pipe end; positive pressure and negative pressure measuring tube taken after the pressure tube is arranged parallel to the air flow in the test section of the pipe via a withdrawal pipe is drawn out through the sealing cap flow passage, and connected to the differential pressure gauge, a differential pressure gauge pressure calculated by the pressure measuring point and the measuring point of the negative pressure difference, gas flow rate obtained in the test pipe.
  9. 9.根据权利要求8所述的一种含尘气体流速的测量装置的测量方法,其特征在于:所述正压测点为七个,负压测点为一个,并且正压测点在被测管道内呈环形均匀间隔分布,负压测点位于被测管道中部。 9. A method of measuring means for measuring a flow rate of the dust-containing gas as claimed in claim 8, wherein: said pressure measuring point is seven, a negative pressure measuring point and the measuring point being positive the measuring duct annularly spaced uniformly, the negative pressure in the middle of the measuring point for the pipe.
CN 201510985242 2015-12-25 2015-12-25 Measuring apparatus and method for measuring the flow rate of the dust-containing gas species CN105403728B (en)

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