CN206038063U - Gas flow testing arrangement and coal pulverizer capacity wind measuring instrument - Google Patents
Gas flow testing arrangement and coal pulverizer capacity wind measuring instrument Download PDFInfo
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- CN206038063U CN206038063U CN201621029566.8U CN201621029566U CN206038063U CN 206038063 U CN206038063 U CN 206038063U CN 201621029566 U CN201621029566 U CN 201621029566U CN 206038063 U CN206038063 U CN 206038063U
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- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 78
- 230000003068 static effect Effects 0.000 claims abstract description 32
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 18
- 238000010079 rubber tapping Methods 0.000 claims description 44
- 238000009826 distribution Methods 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 239000004744 fabric Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to a gas flow testing arrangement field specifically, discloses a gas flow testing arrangement and coal pulverizer capacity wind measuring instrument. Wherein gas flow testing arrangement is including the gaseous rectification distributor, total head measurement element and the static pressure measurement element that set gradually, total head measurement element include a plurality of total heads get press mouthful, and each the total head get press the actinal surface to the branch cloth cover setting of gaseous rectification distributor, static pressure measurement element includes that at least one static pressure is got and presses mouthful, just the static pressure is got and is pressed the mouth dorsad the branch cloth cover setting of gaseous rectification distributor. The utility model discloses a set up gaseous rectification distributor at total head measurement element's the upper reaches to carry out the rectification to the gas that awaits measuring, and then effectively eliminate the gaseous swirl that produces through the channel bend, improved the homogeneity of gas flow rate greatly, effectively improve gas flow measuring accuracy.
Description
Technical field
This utility model is related to gas flow testing device field, in particular it relates to a kind of gas flow testing device and
Coal pulverizer capacity wind measuring instrument.
Background technology
Boiler of power plant combustion case, largely affects the economy and peace of boiler plant and overall power-plant operation
Quan Xing.The adjustment of combustion conditions appropriate (i.e. fuel combustion is fully, fire box temperature field and thermic load be uniformly distributed) is to ensure pot
Stove is safe and stable, the essential condition of economical operation.And the accuracy of Boiler Air Measuring, operations staff is directly influenced to pot
The normal operating of stove operation conditions.
With power plant, the automaticity more and more higher in power station, engineering staff will to the precision and stability of air measuring
Seek also more and more higher.Power plant coal entrance primary air measuring, plays pass for whole boiler wind powder ratio, unit load is controlled
The effect of key.But due to the impact of actual process pipeline distribution, after cold wind with hot blast mixing point, not enough is straight
Pipeline section, in addition pipeline be relatively large in diameter, there is serious cold fluid and hot fluid laminar flow so that flow field of the fluid in pipeline is uneven
Even, flow-disturbing phenomenon is serious, to the huge difficulty that measurement brings, often leads to measurement inaccurate, linear poor.
At present, existing coal pulverizer mainly adopts double-in and double-out ball mill pulverized coal preparation system, this going with each other all the time to grind powder system
The actual coal amount of middle entrance burner hearth can not be replaced with feeder coal amount, can only be replaced using gas flow, and present gas flow is surveyed
Amount device is common differential pressure type flow meter, is easily blocked in practical operation, and measured value fluctuation is larger, additionally, due to
Pulverized coal preparation system straight length is too short, it is impossible to meet《Station boiler performance test code》(GB10184-88) to measuring sectional position in
Regulation requirement (measurement section upstream flow development length L1=(8～10) D, measurement section downstream flow development length L2=(1～
3)D.D is pipeline equivalent diameter), cause gas flow measurement inaccurate, it is impossible to accurately reflect the coal amount into boiler, cause pot
The ratio of water to coal proportioning of stove is improper, the easy over-temp and over-pressure of boiler.It is unfavorable for the coordination control of unit thermal technology specialty.
Utility model content
The purpose of this utility model is to provide a kind of gas flow testing device and coal pulverizer capacity wind measuring instrument, to carry
The accuracy of high gas flow test.
To achieve these goals, this utility model provides a kind of gas flow testing device, and the gas flow test is filled
Put including gas rectification distributor, total head measurement assembly and the static pressure measurement component for setting gradually；The total head measurement assembly bag
Include multiple total head pressure tappings and each total head pressure tappings are arranged towards the distribution face of the gas rectification distributor；It is described quiet
Pressure measurement assembly includes the described of at least one static pressure tapping and the static pressure tapping dorsad gas rectification distributor
Distribution face is arranged.
Preferably, each described total head pressure tappings be placed equidistant relative to the distribution face of the gas rectification distributor, and
Each the described total head pressure tappings axial symmetry arrangement being located in the same horizontal plane.
Preferably, relative to the distribution face area of the gas rectification distributor, the quantity of the total head pressure tappings
For 16-25/m2。
Preferably, the total head measurement assembly also includes multiple total head measurement pipes, has inside each described total head measurement pipe
Have the gas flow that extends along its axial direction and the gas flow perpendicular to the gas rectification distributor the distribution
Face is arranged；Each described total head pressure tappings is arranged in the gas flow of the total head measurement pipe correspondingly.
Preferably, the total head measurement assembly also includes total head pressure pipe and total head tester；The total head pressure pipe bag
Include pressure house steward and the branched pressure arm being separately connected with the pressure house steward；The measurement of the total head tester
Probe is inserted in the free end that the pressure house steward stretches out；One or more are respectively communicated with each described pressure arm
Total head pressure tappings.
Preferably, the total head measurement assembly includes total head measurement pipe, and the pressure arm is along perpendicular to the total head
The direction of the axis of measurement pipe is located at the gas of the total head measurement pipe in passing through the total head measurement pipe and the pressure arm
The total head pressure tappings are formed with tube wall in runner.
Preferably, each pressure arm is parallel to each other, and axisymmetricly arranges.
Preferably, the gas rectification distributor is flase floor.
Preferably, the thickness of the gas rectification distributor is 200-300mm, and in the rectification distributor, grate opening opens
Open area is 1600-3600mm2。
Preferably, the gas flow testing device also includes sleeve, and the sleeve is formed along the two ends of its axis direction
Opening；The gas rectification distributor, total head measurement assembly and static pressure measurement component are removably arranged in the sleeve,
The bearing of trend of the vertical center line of wherein described gas rectification distributor is parallel with the bearing of trend of the axis of the sleeve.
Meanwhile, a kind of coal pulverizer capacity wind measuring instrument is additionally provided in this utility model, the coal pulverizer capacity wind is surveyed
Measuring appratus include gas flow testing device, and the gas flow testing device is filled for gas flow test described in the utility model
Put.
The axis direction of the pipeline section being preferably located within least 1 meter of the upstream of the gas flow testing device with it is perpendicular
Angle of the Nogata between is 0 ° -30 °.
By above-mentioned technical proposal, this utility model arranges gas rectification distributor in the upstream of total head measurement assembly, with
Under test gas are carried out with rectification, and then effectively eliminates the whirlpool that gas is produced through channel bend, substantially increase gas flow rate
Uniformity, effectively improve the accuracy of gas flow measurement；Meanwhile, the setting of the gas rectification distributor can also increase to be treated
The touch opportunity of cold wind and hot blast in gas is surveyed, to reduce the temperature difference brought by cold wind and hot blast mixing inequality, and then is effectively carried
The accuracy of high gas flow measurement.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Description of the drawings
Accompanying drawing is further understood to of the present utility model for providing, and constitutes a part for description, and following
Specific embodiment be used for together explaining this utility model, but do not constitute to restriction of the present utility model.In the accompanying drawings：
Fig. 1 a show
Depending on schematic diagram；
Fig. 1 b show the side-looking structure cross-sectional schematic of gas flow testing device shown in Fig. 1 a；
Fig. 2 a show the structural representation according to gas rectification distributor in a kind of embodiment of the present utility model；
Fig. 2 b show the gas rectification effect schematic diagram of gas rectification distributor shown in Fig. 2 a；
Fig. 3 shows the partial structural diagram according to total head measurement assembly in a kind of embodiment of the present utility model.
Description of reference numerals
10 gas rectification distributor 11 is distributed face
20 total head measurement assembly, 21 total head pressure tappings
22 total head measurement pipe, 23 total head pressure pipe
23a pressure house steward's 23b pressure arms
30 static pressure measurement component, 40 sleeve
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described specific embodiment is merely to illustrate and explains this utility model, is not limited to this utility model.
Be directed to mentioned by background section " process pipe can not reach at the scene《Station boiler performance test is advised
Journey》(GB10184-88) to measuring during the requirement of sectional position in, there is no enough straight lengths and hot and cold wind mixing temperature point
Under the uneven operating mode support of cloth, it is difficult to accurately measure the air quantity of capacity wind " this technical problem.This utility model provides one kind
Gas flow testing device, as shown in Fig. 1 a to Fig. 2 b, the gas flow testing device includes the gas rectification point for setting gradually
Cloth device 10, total head measurement assembly 20 and static pressure measurement component 30；The total head measurement assembly 20 include multiple total head pressure tappings 21,
And each total head pressure tappings 21 are arranged towards the distribution face 11 of the gas rectification distributor 10；The static pressure measurement component 30
Including at least one static pressure tapping and the distribution face 11 of the static pressure tapping dorsad gas rectification distributor 10 sets
Put.
Gas flow testing device provided by the utility model, it is whole by arranging gas in the upstream of total head measurement assembly
Flow distributor, so that under test gas are carried out with rectification, and then effectively eliminates the whirlpool that gas is produced through channel bend, greatly improves
The uniformity of gas flow rate, effectively improves the accuracy of gas flow measurement；Meanwhile, the setting of the gas rectification distributor is also
The touch opportunity of cold wind and hot blast under test gas can be increased, to reduce the temperature difference brought by cold wind and hot blast mixing inequality,
And then effectively improve the accuracy of gas flow measurement.
The operation principle of gas flow testing device provided by the utility model is still based on back-to-back pressure principle, category
In differential pressure flowmeter.In this utility model, " total head " is the test to windward side stream pressure, in windward side effusion meter
Probe receives gas shock, and the kinetic energy of air-flow is converted into pressure energy, thus measured pressure is higher, the total head being considered as in airduct
Power；" static pressure " is the test to leeward side stream pressure, and in leeward side due to not receiving air-flow punching press, the pressure in its pipe is airduct
Interior static pressure；The difference of total head and static pressure is referred to as differential pressure, and its size is relevant with wind speed (measuring) in pipe, and wind speed (measuring) is bigger, differential pressure
It is bigger；Wind speed (measuring) is little, and differential pressure is also little, therefore, if the size of differential pressure is measured, then to find out differential pressure corresponding with wind speed (measuring)
Relation, just can correctly measure air quantity in pipe.
It is according to this utility model gas flow testing device, not special for the setting of wherein total head measurement assembly 20
Require, the usual manner for being referred to this area is configured.However, gas rectification distributor is provided with this utility model
In the case of 10, preferably in the total head measurement assembly 20, each described total head pressure tappings 21 is distributed relative to the gas rectification
The distribution face 11 of device 10 is placed equidistant, and each described 21 axial symmetry of the total head pressure tappings arrangement being located in the same horizontal plane.
For wind element is surveyed, generally all it is the flow of the flow of sampled point using limited quantity as whole section.
This requires that these have enough representativenesses to whole section, then Measure section flow field must be uniform.In this utility model
In by by each described total head pressure tappings 21 in the total head measurement assembly 20 according to aforementioned structure arrange, be conducive to whole
The pressure data of the multiple sampled points in same level of acquirement relatively uniform in strong and weak velocity flow profile area, to obtain more
For accurate average pressure signal, increase the accuracy of measurement.
In this utility model " axial symmetry arrangement " refer to and will be arranged figure that thing formed along arbitrary straight line doubling, it is right
Two parts after folding are the arrangements being completely superposed.Circular to arrange for typical axial symmetry, which is with through the arbitrary a diameter of of the center of circle
Axis of symmetry is presented axial symmetry arrangement.
According to this utility model gas flow testing device, for the number of the total head pressure tappings 21 in total head measurement assembly 20
Amount is not required, The more the better in rational scope.Equipment cost and measurement effect are considered in this utility model
Really, preferably with respect to 11 area of the distribution face of the gas rectification distributor 10, the quantity of the total head pressure tappings 21 is
16-25/m2。
According to this utility model gas flow testing device, in order to more accurately obtain the data of each sampled point, preferably also
Including multiple total head measurement pipes 22, inside each described total head measurement pipe 22 with the gas flow extended along its axial direction,
And the gas flow is arranged perpendicular to the distribution face 11 of the gas rectification distributor 10；Each described total head pressure tappings 21 1
One corresponding is arranged in the gas flow of the total head measurement pipe 22.By each described total head is taken in this utility model
Pressure mouth 21 is arranged in the gas flow of the total head measurement pipe 22 correspondingly, is that each described total head pressure tappings 21 is provided
One relatively independent pressure space, and then be conducive to improving the pressure accuracy of each total head pressure tappings 21.
According to this utility model gas flow testing device, routinely arrange according to this area wherein in total head measurement assembly 20
.However, the convenience for the installation of equipment being considered in this utility model, being changed, and total head pressure tappings 21 are taking
Uniform in sample plane, preferably the total head measurement assembly 20 also includes total head pressure pipe 23 and total head tester；The total head
Pressure pipe 23 includes the pressure house steward 23a and branched pressure arm 23b being separately connected with the pressure house steward 23a；
The measurement probe of the total head tester is inserted in the free end that the pressure house steward 23a stretches out；Each described pressure
One or more total head pressure tappings 21 are respectively communicated with arm 23b.
Preferably, the total head measurement assembly 20 includes aforementioned total head measurement pipe 22 (structure is referring to described above), this
When, the pressure arm 23b along the direction of the axis perpendicular to the total head measurement pipe 22 through the total head measurement pipe 22, and
The total head pressure tappings are formed with the tube wall in the gas flow of the total head measurement pipe 22 in the pressure arm 23b
21.The simple structure of this total head measurement pipe, easily making, can arrange multiple complete on same pressure arm 23b simultaneously
Pressure measurement pipe 22, simplifies the structure of pressure arm 23b, increased the convenience that total head measurement assembly 20 is installed, dismantled.
Preferably, in the total head measurement assembly 20, each pressure arm 23b is parallel to each other, and axisymmetricly arranges.
By being arranged such each pressure arm 23b, be conducive to while equipment is simplified so that each total head pressure tappings 21 are relatively equal
It is arranged in same level evenly, and then increases the accuracy of measurement.
In a kind of specific embodiment, as shown in figure 3, the total head measurement assembly 20 includes that five are parallel to each other
Pressure arm 23b, 23 total head pressure tappings 21, and 23 total head measurements being correspondingly arranged with total head pressure tappings 21
Pipe 22.Wherein 23 total head pressure tappings are according to the array arrangement of 3-5-7-5-3 (total head pressure tappings quantity) in five pressures
On arm 23b, and 23 total head pressure tappings 21 on five pressure arm 23b are with zhou duicheng tuxing Structural assignments
(i.e. centered on the center of circle of Fig. 3 middle sleeves 40, this 23 total head pressure tappings 21 are presented axle pair with arbitrary a diameter of axis of symmetry
Claim arrangement).
According to this utility model gas flow testing device, wherein for static pressure measurement component 30 does not have particular/special requirement,
Static pressure pressure pipe and static pressure test instrument can be included, one end of wherein static pressure pressure pipe forms the static pressure tapping, the other end
Stretch out to form free end；The probe of the static pressure measurement instrument be inserted into the static pressure pressure pipe stretch out it is formed freely
End, wherein static pressure test instrument and aforementioned total head tester can adopt existing differential pressure flowmeter jointly, and concrete structure can be with
With reference to the conventional static pressure measurement component 30 in this area, will not be described here.
According to this utility model gas flow testing device, wherein for gas rectification distributor 10 does not have special wanting
Ask, as long as being formed with uniform gas communication hole thereon.The preferred gas rectification distributor 10 in this utility model
For flase floor.Using flase floor as gas rectification distributor 10 in this utility model, on the one hand its material is easy to get, and price is low
It is honest and clean, be conducive to cost-effective；On the other hand, there is certain thickness using flase floor, is conducive to flowing through the gas rectification point
The gas of cloth device 10 carries out rectification, to improve the uniformity of gas flow rate, improves the accuracy of gas flow measurement.
Preferably, the thickness of the gas rectification distributor 10 be 200-300mm, grate opening in the rectification distributor 10
Aperture area be 1600-3600mm2。
According to this utility model gas flow testing device, can directly by corresponding gas rectification distributor 10, total head
Measurement assembly 20 and static pressure measurement component 30 are arranged in gas flow surveying instrument by aforementioned rule.However, in order to reduce gas
The installation difficulty of body flow testing device, improves installation effectiveness.In this utility model preferably, the gas flow testing device
Also include sleeve 40, the sleeve 40 forms opening along the two ends of its axis direction；The gas rectification distributor 10, total head
Measurement assembly 20 and static pressure measurement component 30 are removably arranged in the sleeve 40, wherein the gas rectification distributor 10
The inwall of periphery and the sleeve 40 coordinate and fix.
Can be according to the structure of pipeline in gas flow surveying instrument, according to 1 in practical operation:1 proportional arrangement sleeve
40, and require the gas flow testing device is installed according to of the present utility model；Then intercept in gas flow surveying instrument
A part for pipeline, mounted gas flow testing device is fixed in gas flow surveying instrument, is carried out after sealing
Measurement.
Meanwhile, a kind of coal pulverizer capacity wind measuring instrument is additionally provided in this utility model, the coal pulverizer capacity wind is surveyed
Measuring appratus include gas flow testing device, and the gas flow testing device is this utility model gas flow testing device.This
Coal pulverizer capacity wind measuring instrument is planted by the survey of capacity wind using this utility model gas flow testing device, can be effectively improved
The accuracy of amount, the ratio of water to coal proportioning for follow-up boiler provide more accurate foundation.
Preferably, in the gas flow testing device positioned at the gas flow testing device at least 1 meter of upstream it
Angle between the axis direction and vertical direction of interior pipeline section is 0 ° -30 °.By the upstream for controlling gas flow testing device
The bearing of trend of the pipeline section within least 1 meter, desirably prevents pressure guiding pipe to be blocked.
A kind of installation procedure of this utility model gas flow testing device is still further provides in this utility model,
Which comprises the following steps：
(1) prepare before installing：Contact personnel put up scaffold, complete place mat, arrange safety warning-panel；Contact personnel push aside
The insulation outer layer of measurement apparatus installation place, dismantles to old measurement apparatus joint according to standard；Probe tube is carried out before dismounting
Visible marking, blend compounds cloth will be sealed at opening；
(2) select installation site：There is no bending in selecting the pipeline section within least 1 meter of upstream (the longer the better) as far as possible
The pipeline section of pipeline.
(3) measurement apparatus are installed：It is determined that installed position cut out length for 500mm pipelines, reserve installation site；Will
This utility model gas flow testing device is embedded in reserved space, and adjusting apparatus position makes apparatus for measuring air quantity front/rear end
It is fully contacted with pipeline end face.Note：Gas rectification distributor in the gas flow testing device, total head measurement assembly and quiet
Pressure measurement assembly is set gradually along the flow direction of fluid media (medium)；Then rectifier type multiple spot transvers section measuring device and pipeline are filled
Divide firm welding, it is ensured that air-tightness.
(4) probe tube connects and fixed：Connected by former air quantity instrument probe tube (positive and negative pressure side) probe tube requirement
Connect, will be connected in parallel by the polarity of output differential pressure；After installing, blowpipe is carried out to pipeline, checks pipeline whether there is gas leakage,
Whether joint fastens reliability.
(5) air flow calibration work：Gas flow testing device measured value and production technology are contrasted, determine whether with
Production technology is consistent；Contact debugging unit, can carry out air flow calibration work using blower fan starter motor, using reserved verification mouth peace
Dress verification probe, records multi-group data under different load, including baffle opening, blast, flow, temperature etc., data will be preserved
Completely；Wherein calibration principle is gridding method；Calibration facility standard pitot tube, tosimeter
(6) closed loop control is participated in, is put into operation automatically.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing, but, this utility model is not limited
Detail in above-mentioned embodiment, in range of the technology design of the present utility model, can be to skill of the present utility model
Art scheme carries out various simple variants, and these simple variants belong to protection domain of the present utility model.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, this utility model is to each
Plant possible compound mode no longer separately to illustrate.
Additionally, combination in any between a variety of embodiments of the present utility model, can also be carried out, as long as which is not disobeyed
Thought of the present utility model is carried on the back, which should equally be considered as content disclosed in the utility model.
Claims (12)
1. a kind of gas flow testing device, it is characterised in that the gas flow testing device includes the gas for setting gradually
Rectification distributor (10), total head measurement assembly (20) and static pressure measurement component (30)；The total head measurement assembly (20) is including more
Individual total head pressure tappings (21), and each total head pressure tappings (21) are towards the distribution face (11) of the gas rectification distributor (10)
Arrange；The static pressure measurement component (30) includes at least one static pressure tapping, and the static pressure tapping dorsad gas
The distribution face (11) of rectification distributor (10) is arranged.
2. gas flow testing device according to claim 1, it is characterised in that each described total head pressure tappings (21) phase
For the distribution face (11) of the gas rectification distributor (10) is placed equidistant, and each institute being located in the same horizontal plane
State the arrangement of total head pressure tappings (21) axial symmetry.
3. gas flow testing device according to claim 1, it is characterised in that relative to the gas rectification distributor
(10) the distribution face (11) area, the quantity of the total head pressure tappings (21) is 16-25/m2。
4. gas flow testing device according to claim 1, it is characterised in that the total head measurement assembly (20) is also wrapped
Multiple total head measurement pipes (22) are included, each described total head measurement pipe (22) is internal with the gas stream extended along its axial direction
Road and the gas flow are arranged perpendicular to the distribution face (11) of the gas rectification distributor (10)；Each is described complete
Pressure pressure tappings (21) is arranged in the gas flow of the total head measurement pipe (22) correspondingly.
5. gas flow testing device as claimed in any of claims 1 to 4, it is characterised in that the total head is surveyed
Amount component (20) also includes total head pressure pipe (23) and total head tester；The total head pressure pipe (23) is including pressure house steward
(23a) the branched pressure arm (23b) and being separately connected with the pressure house steward (23a)；The total head tester
Measurement probe be inserted in the free end that the pressure house steward (23a) stretches out；Divide on each described pressure arm (23b)
One or more total head pressure tappings (21) are not connected.
6. gas flow testing device according to claim 5, it is characterised in that bag in the total head measurement assembly (20)
Total head measurement pipe (22) is included, the pressure arm (23b) is passed through along the direction of the axis perpendicular to the total head measurement pipe (22)
The total head measurement pipe (22), and the pressure arm (23b) in be located at the total head measurement pipe (22) gas flow in
The total head pressure tappings (21) are formed with tube wall.
7. gas flow testing device according to claim 5, it is characterised in that each described pressure arm (23b) phase
It is mutually parallel, and axisymmetricly arrange.
8. gas flow testing device as claimed in any of claims 1 to 4, it is characterised in that the gas is whole
Flow distributor (10) is flase floor.
9. gas flow testing device according to claim 8, it is characterised in that the gas rectification distributor (10)
Thickness is 200-300mm, and in the rectification distributor (10), the aperture area of grate opening is 1600-3600mm2。
10. gas flow testing device as claimed in any of claims 1 to 4, it is characterised in that the gas stream
Amount test device also includes sleeve (40), and the sleeve (40) forms opening along the two ends of its axis direction；The gas is whole
Flow distributor (10), total head measurement assembly (20) and static pressure measurement component (30) are removably disposed in the sleeve (40),
The periphery of wherein described gas rectification distributor (10) is coordinated with the inwall of the sleeve (40) to be fixed.
A kind of 11. coal pulverizer capacity wind measuring instruments, the coal pulverizer capacity wind measuring instrument include gas flow testing device, its
It is characterised by, the gas flow testing device is the gas flow testing device in claim 1 to 10 described in any one.
12. coal pulverizer capacity wind measuring instruments according to claim 11, it is characterised in that the gas flow test dress
Angle between the axis direction and vertical direction of the pipeline section within least 1 meter of the upstream put is 0 ° -30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621029566.8U CN206038063U (en) | 2016-08-31 | 2016-08-31 | Gas flow testing arrangement and coal pulverizer capacity wind measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621029566.8U CN206038063U (en) | 2016-08-31 | 2016-08-31 | Gas flow testing arrangement and coal pulverizer capacity wind measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206038063U true CN206038063U (en) | 2017-03-22 |
Family
ID=58297929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621029566.8U Withdrawn - After Issue CN206038063U (en) | 2016-08-31 | 2016-08-31 | Gas flow testing arrangement and coal pulverizer capacity wind measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206038063U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352930A (en) * | 2016-08-31 | 2017-01-25 | 神华集团有限责任公司 | Gas flow testing device and coal mill capacity air measuring instrument |
| CN110672165A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flow sensor |
-
2016
- 2016-08-31 CN CN201621029566.8U patent/CN206038063U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352930A (en) * | 2016-08-31 | 2017-01-25 | 神华集团有限责任公司 | Gas flow testing device and coal mill capacity air measuring instrument |
| CN106352930B (en) * | 2016-08-31 | 2024-01-26 | 国家能源投资集团有限责任公司 | Gas flow testing device and coal mill capacity wind measuring instrument |
| CN110672165A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flow sensor |
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Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: State energy group Guoyuan Electric Power Co.,Ltd. Patentee after: Guoneng Shanxi Hequ Power Generation Co.,Ltd. Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: SHENHUA GROUP Corp.,Ltd. Patentee before: SHENHUA GUONENG ENERGY GROUP Corp.,Ltd. Patentee before: SHANXI LUNENG HEQU POWER GENERATION Co.,Ltd. |
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