CN207180777U - A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and include its blower fan - Google Patents
A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and include its blower fan Download PDFInfo
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- CN207180777U CN207180777U CN201721097861.1U CN201721097861U CN207180777U CN 207180777 U CN207180777 U CN 207180777U CN 201721097861 U CN201721097861 U CN 201721097861U CN 207180777 U CN207180777 U CN 207180777U
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Abstract
The utility model discloses a kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and include its blower fan, grid type static pressure difference wind and smoke flow measurement device applied to blower fan, including two layers of static pressure pressure obtaning device, respectively the first static pressure pressure obtaning device and the second static pressure pressure obtaning device, first static pressure pressure obtaning device includes the first static pressure pressure pipe of more than two, more than two first pressure ports are equipped with every first static pressure pressure pipe, second static pressure pressure obtaning device includes the second static pressure pressure pipe of more than two, more than two second pressure ports are equipped with every second static pressure pressure pipe.The utility model measurement apparatus, fans entrance wind and smoke flow measurement is mainly used in, the entrance that is particularly suitable for use in is gradually reducing pipeline fans entrance wind and smoke flow measurement, has the significant advantages such as anti-blocking ash, drag losses is small, measurement accuracy is high, measurement value stabilization.
Description
Technical field
The utility model is related to a kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and comprising it
Blower fan, belong to gas flow measurement technical field.
Background technology
In modern industrial production, various large fans are widely used, in order to accurately adjust fan efficiency, operation
Cost, one's intention as revealed in what one says is passed in and out to blower fan, the accuracy and reliability requirement of flue gas flow measurement further improves.But modern industry apoplexy
The measurement of machine disengaging one's intention as revealed in what one says, flue gas flow is limited by on-site actual situations, as pipeline section product is big, elbow is more, straight length
Short, flow area changes greatly, flowed fluctuation is big, flow velocity is low etc., is difficult that measurement is accurate by current existing flow measurement device
Really.Therefore, the short wind of the big passage section of accurate measurement, low flow velocity, straight length, flue gas flow, should rationally design, select stream
Measuring device, it is correct again to install, just can guarantee that the accurate of measured value using flow measurement device, only comprehensive management and control
Reliably.
By taking thermal power plant primary air fan, pressure fan as an example, the wind that current pipe flow speed is low, straight length is short is further illustrated
The present situation of plume measurement.Station boiler primary and secondary air Boiler pressure control is directly related to Boiler Stable Combustion, economical operation, prevented
The only serial important indicator such as coking, reduction pollutant emission, it is thermal power plant's safety, economic, environmental protection operation working contents.
Primary air fan, pressure fan outlet conduits elbow, branch pipe are more, and its outlet conduits sectional area is larger, primary and secondary air flow velocity compared with
It is low, therefore station boiler generally measures hot primary and secondary air air quantity in air preheater outlet at present, but the air quantity at this can not be complete
Blower fan inlet and outlet air quantity is represented, the performance to first and second blower fan, which calculates, makes troubles.Meanwhile primary and secondary air is through swinging air
A large amount of soot particles are carried after preheater preheating, there is the characteristics of high temperature, dust-laden, give wind and smoke flow measurement device long time stability
Work brings sizable challenge.
Utility model content
The utility model provide a kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and comprising it
Blower fan, to improve the stability and accuracy of air quantity and flue gas measurement in industrial processes.
In order to solve the above technical problems, technical scheme is as follows used by the utility model：
A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan, including two layers of static pressure pressure obtaning device, point
Not Wei the first static pressure pressure obtaning device and the second static pressure pressure obtaning device, the first static pressure pressure obtaning device includes first static pressure of more than two
Pressure pipe, more than two first pressure ports are equipped with every first static pressure pressure pipe, and the second static pressure pressure obtaning device includes two
The second more than root static pressure pressure pipe, more than two second pressure ports are equipped with every second static pressure pressure pipe.
Pressure port on same layer static pressure pressure pipe, if transverse and longitudinal connects, in latticed.
To improve the accuracy of static pressure difference measurements, the first static pressure pressure pipe is equidistantly arranged in parallel, and spacing is not more than
500mm, the first all static pressure pressure pipes are interconnected by the first communicating pipe；The equidistant parallel cloth of second static pressure pressure pipe
Put, spacing is not more than 500mm, and the second all static pressure pressure pipes is interconnected by the second communicating pipe.
To improve the accuracy of static pressure difference measurements, the first pressure port on the first static pressure pressure pipe is equally spaced, and
Away from no more than 300mm；The second pressure port on second static pressure pressure pipe is equally spaced, and spacing is not more than 300mm.
In order to ensure measurement apparatus long time stability, it is preferable that the first static pressure pressure pipe and the second static pressure pressure pipe are
DN32~DN80 stainless pipe.
In order to take into account the accuracy of the convenience of pressure and measurement, the first pressure port and the second pressure port are that aperture is 4
~12mm circular hole.
In order to further improve the accuracy of measurement, the above-mentioned grid type static pressure difference wind and smoke flow measurement applied to blower fan fills
Put, in addition to differential pressure transmitter, temperature-measuring element and flow rate calculation display module；Differential pressure transmitter and temperature-measuring element are equal
It is connected with flow rate calculation display module；First static pressure pressure obtaning device and the second static pressure pressure obtaning device are connected with differential pressure transmitter.
The average static pressure difference of first static pressure pressure obtaning device and the second static pressure pressure obtaning device is converted to telecommunications through differential pressure transmitter
Number, the temperature signal provided to flow rate calculation display module, combination temperature measuring cell is provided, calculates survey gas stream in real time
Amount, shown calculating display module.
The blower fan of the above-mentioned grid type static pressure difference wind and smoke flow measurement device applied to blower fan is included, the entrance of blower fan is
Gradually reducing pipeline, the first static pressure pressure obtaning device are installed in the big end section of fans entrance section gradually reducing pipeline, the second static pressure pressure dress
Put and be installed in the small end section of fans entrance section gradually reducing pipeline.
Big end section refers to the section that cross section is maximum on gradually reducing pipeline, and it is minimum that small end section refers to cross section on gradually reducing pipeline
Section.
Applicant it has been investigated that, the tapered configuration of fans entrance, and there are high flow velocities, be wind and smoke flow accurate survey
Measure condition of providing convenience.
Applicant it has been investigated that, two sections of the tapered segment pipe of fans entrance, due to mean flow rate differ it is larger, accordingly
Dynamic pressure difference is larger, and according to Bernoulli equation principle, static pressure difference is also larger, and its static pressure difference can reflect that fans entrance flow is big
Small, mathematical relationship is 0.5 power proportional of fans entrance flow and static pressure difference.
The NM technology of the utility model is with reference to prior art.
The utility model is applied to the grid type static pressure difference wind and smoke flow measurement device of blower fan, is mainly used in fans entrance
Wind and smoke flow measurement, the entrance that is particularly suitable for use in are gradually reducing pipeline fans entrance wind and smoke flow measurement, have anti-blocking ash, resistance damage
Lose the significant advantages such as small, measurement accuracy is high, measurement value stabilization.
Brief description of the drawings
Fig. 1 is that static pressure pressure pipe is illustrated in the arrangement of fans entrance gradually reducing pipeline both ends of the surface in the utility model embodiment 1
Figure.
Fig. 2 is Section A-A view in Fig. 1.
Fig. 3 is section B-B view in Fig. 1.
In figure, 1 is fans entrance, and 2 be tapered segment pipe, and 3 be big end section, and 4 be small end section, and 5 be that the first static pressure takes
Pressure pipe, 6 be the second static pressure pressure pipe, and 7 be the first communicating pipe, and 8 be the second communicating pipe.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan, including two layers of static pressure pressure obtaning device, point
Not Wei the first static pressure pressure obtaning device and the second static pressure pressure obtaning device, the first static pressure pressure obtaning device includes first static pressure of more than two
Pressure pipe, more than two first pressure ports are equipped with every first static pressure pressure pipe, and the second static pressure pressure obtaning device includes two
The second more than root static pressure pressure pipe, more than two second pressure ports, same layer are equipped with every second static pressure pressure pipe
Pressure port on static pressure pressure pipe, if transverse and longitudinal connects, in latticed；
First static pressure pressure pipe is equidistantly arranged in parallel, and spacing is not more than 500mm, and the first all static pressure pressure pipes is logical
It is interconnected after the first communicating pipe；Second static pressure pressure pipe is equidistantly arranged in parallel, and spacing is not more than 500mm, and all second
Static pressure pressure pipe is interconnected by the second communicating pipe；First static pressure pressure pipe and the second static pressure pressure pipe are DN32~DN80
Stainless pipe.
The first pressure port on first static pressure pressure pipe is equally spaced, and spacing is not more than 300mm；Second static pressure pressure
The second pressure port on pipe is equally spaced, and spacing is not more than 300mm；First pressure port and the second pressure port are that aperture is
4~12mm circular hole.
The above-mentioned grid type static pressure difference wind and smoke flow measurement device applied to blower fan, differential pressure transmitter, temperature can also be included
Spend measuring cell and flow rate calculation display module；Differential pressure transmitter and temperature-measuring element connect with flow rate calculation display module
Connect；First static pressure pressure obtaning device and the second static pressure pressure obtaning device are connected with differential pressure transmitter.First static pressure pressure obtaning device and
The average static pressure difference of two static pressure pressure obtaning devices is converted to electric signal through differential pressure transmitter, transmits to flow rate calculation display module, knot
The temperature signal that temperature-measuring element provides is closed, calculates survey gas flow in real time, is shown calculating display module.
Embodiment 2
The blower fan for the grid type static pressure difference wind and smoke flow measurement device for being applied to blower fan in embodiment 1 is included, blower fan enters
Mouth section is gradually reducing pipeline, and the first static pressure pressure obtaning device is installed in the big end section of blower fan, and the second static pressure pressure obtaning device is installed in
In the small end section of blower fan.
Two sections of the tapered segment pipe of fans entrance, because mean flow rate differs larger, corresponding dynamic pressure difference is larger, according to
Bernoulli equation principle, static pressure difference is also larger, and its static pressure difference can reflect fans entrance uninterrupted, and mathematical relationship enters for blower fan
0.5 power proportional of mouth flow and static pressure difference.
It was verified that above-mentioned measurement apparatus has anti-blocking ash, drag losses is small, measurement accuracy is high, measures value stabilization etc. significantly
Advantage.
Claims (7)
- A kind of 1. grid type static pressure difference wind and smoke flow measurement device applied to blower fan, it is characterised in that：Taken including two layers of static pressure Pressure device, respectively the first static pressure pressure obtaning device and the second static pressure pressure obtaning device, the first static pressure pressure obtaning device include more than two The first static pressure pressure pipe, be equipped with more than two first pressure ports, the second static pressure pressure on every first static pressure pressure pipe Device includes the second static pressure pressure pipe of more than two, and more than two second pressures are equipped with every second static pressure pressure pipe Hole.
- 2. it is applied to the grid type static pressure difference wind and smoke flow measurement device of blower fan as claimed in claim 1, it is characterised in that：The One static pressure pressure pipe is equidistantly arranged in parallel, and spacing is not more than 500mm, and the first all static pressure pressure pipes passes through the first connection Pipe is interconnected；Second static pressure pressure pipe is equidistantly arranged in parallel, and spacing is not more than 500mm, the second all static pressure pressure pipes It is interconnected by the second communicating pipe.
- 3. being applied to the grid type static pressure difference wind and smoke flow measurement device of blower fan as claimed in claim 1 or 2, its feature exists In：First static pressure pressure pipe and the stainless pipe that the second static pressure pressure pipe is DN32~DN80.
- 4. being applied to the grid type static pressure difference wind and smoke flow measurement device of blower fan as claimed in claim 1 or 2, its feature exists In：The first pressure port on first static pressure pressure pipe is equally spaced, and spacing is not more than 300mm；On second static pressure pressure pipe The second pressure port be equally spaced, and spacing is not more than 300mm.
- 5. being applied to the grid type static pressure difference wind and smoke flow measurement device of blower fan as claimed in claim 1 or 2, its feature exists In：First pressure port and the second pressure port are the circular hole that aperture is 4~12mm.
- 6. being applied to the grid type static pressure difference wind and smoke flow measurement device of blower fan as claimed in claim 1 or 2, its feature exists In：Also include differential pressure transmitter, temperature-measuring element and flow rate calculation display module；Differential pressure transmitter and temperature-measuring element are equal It is connected with flow rate calculation display module；First static pressure pressure obtaning device and the second static pressure pressure obtaning device are connected with differential pressure transmitter.
- 7. include the grid type static pressure difference wind and smoke flow measurement device applied to blower fan described in claim 1-6 any one Blower fan, it is characterised in that：The entrance of blower fan is gradually reducing pipeline, and the first static pressure pressure obtaning device is installed in fans entrance section reducing pipe In the big end section in road, the second static pressure pressure obtaning device is installed in the small end section of fans entrance section gradually reducing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721097861.1U CN207180777U (en) | 2017-08-30 | 2017-08-30 | A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and include its blower fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721097861.1U CN207180777U (en) | 2017-08-30 | 2017-08-30 | A kind of grid type static pressure difference wind and smoke flow measurement device applied to blower fan and include its blower fan |
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| Publication Number | Publication Date |
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| CN207180777U true CN207180777U (en) | 2018-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108329A (en) * | 2019-05-29 | 2019-08-09 | 南京久诺科技有限公司 | A kind of multi-state apparatus for measuring air quantity |
-
2017
- 2017-08-30 CN CN201721097861.1U patent/CN207180777U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108329A (en) * | 2019-05-29 | 2019-08-09 | 南京久诺科技有限公司 | A kind of multi-state apparatus for measuring air quantity |
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