CN205785289U - A kind of temperature and pressure flow measuring apparatus - Google Patents
A kind of temperature and pressure flow measuring apparatus Download PDFInfo
- Publication number
- CN205785289U CN205785289U CN201620309857.6U CN201620309857U CN205785289U CN 205785289 U CN205785289 U CN 205785289U CN 201620309857 U CN201620309857 U CN 201620309857U CN 205785289 U CN205785289 U CN 205785289U
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- pressure
- temperature
- installation frame
- transmitter
- measurement system
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Abstract
This utility model relates to a kind of temperature and pressure flow measuring apparatus.Its purpose is to provide a kind of flow-speed measurement precisely, the effusion meter installed of framework.This utility model includes that installation frame, total head measure system, static pressure measurement system, differential pressure transmitter, temperature measurement system, pressure-measuring system and microprocessor, installation frame is fixed in flue, total head is measured system and is included impulse main line and measuring unit, impulse main line is fixed in installation frame, is divided into several rectangle measuring units in installation frame；After static pressure measurement system is placed in total head measurement system；Total head is connected with differential pressure transmitter respectively with static pressure measurement system；Temperature measurement system includes that temperature sensor and temperature transmitter, temperature sensor are connected with the temperature transmitter being arranged at outside installation frame；Pressure-measuring system includes that pressure pressure pipe and pressure transmitter, pressure pressure pipe are connected with the pressure transmitter being arranged at outside installation frame；Differential pressure, temperature and pressure transmitter are connected with microprocessor respectively.
Description
Technical field
This utility model relates to a kind of polluter flow monitoring device, particularly relates to a kind of temperature and pressure flow measuring apparatus.
Background technology
Being currently used for the mode that Online monitoring of pollution sources generally uses temperature, pressure flow velocity to measure simultaneously, its main purpose is
Flue gas flow under measurement standard state.Measure temperature and pressure actually effusion meter calculation to be compensated.When industry spot needs
During pollutant discharge amount to be added up, it is common practice that standard state pollutant levels are carried out, with standard state flow, the meter that is multiplied
Calculating, the result of computational chart is as pollutant discharge of enterprise statistical data.Therefore, temperature, pressure, stream are usually taken when carrying out flow measurement
The mode that speed (flow) is measured simultaneously.According further to HJ/T 75-2007, " the continuous monitoring technology of fixed pollution source smoke discharge is advised
Model " requirement, the temperature of operating mode, pressure, flow velocity (flow) seat data need to can be shown, store also by smoke on-line monitoring system
Print.Temperature and pressure stream all-in-one in currently available technology uses pitot tube flowmeter to measure differential pressure mostly, usual during measurement
Some point in measurement flue, represents mean velocity in section with this flow velocity, if this measuring point is positioned at flue center, error phase
Smaller to meeting, owing to industry spot is widely different, what flue size had reaches 8～10 meters, and therefore flow measurement there will be very
Big measurement error.So pollutant discharge amount for user is added up and also can be formed the biggest error, can relate to for user
Charges for disposing pollutants use, have impact on the economic benefit of enterprise to a certain extent；What industry spot had considers to supervise online being designed without
The installation of measurement equipment, when design, flue straight length the shortest (being typically not capable of HJ/T75-2007 to require), such
In environment, in flue, there is eddy current, turbulent flow etc., when carrying out flow measurement, it may appear that flow velocity saltus step, flow velocity drastically change even
There will be the situation that flow velocity is 0, so can not reflect operating mode in time, when carrying out flow measurement, also can be formed in measurement
Error.And current existing area flowmeter, its simple in construction, measure point on the low side, thus measurement result is not accurate enough, stable,
And it does not have temperature, pressure gauge, when carrying out temperature pressure compensation, in addition it is also necessary to independently installed temperature, pressure are surveyed
Amount device.And the general length of temperature sensor is fixed, it is difficult to when mounted mate according to field condition, its result measured
Degree of accuracy is the highest.And during pressure measxurement, it is typically only capable to measure certain point in flue, and in flue under complex situations, its measurement result
Same stability is on the low side.
Utility model content
The purpose of this utility model aims to provide one, and flow-speed measurement is reliable and stable, structure is ingenious, the temperature that frame-type is installed
Baric flow measurement apparatus.
The novel a kind of temperature and pressure flow measuring apparatus of this use, measures system including installation frame, total head, static pressure measurement system,
Differential pressure transmitter, temperature measurement system, pressure-measuring system, hub, display device and microprocessor, described installation frame is solid
In flue, described total head is measured system and is included that impulse main line and measuring unit, described impulse main line are fixed on installation frame
In, it is divided into several rectangular areas in described installation frame, in each rectangular area, is provided with a measuring unit, described measurement
Unit includes pressure guiding pipe and impulse branch road, and described pressure guiding pipe is connected to both sides, impulse main line, pressure guiding pipe by impulse leg parallel
Two ends are provided with towards inclination angle, air intake vent direction otch up and down, and described inclination angle otch and air-flow angle are 45 °；Described static pressure measurement system
System is set in parallel on rear side of total head measurement system, and it is identical that its structure measures system with described total head, and inclination angle cut-out direction enters dorsad
Air port；Described total head measure system and described static pressure measurement system respectively with the differential pressure transmitter phase being arranged at outside installation frame
Even；Described temperature measurement system includes that temperature sensor and temperature transmitter, described temperature sensor are arranged in installation frame
Bottom, described temperature transmitter is arranged at outside installation frame and is connected with temperature sensor；Described pressure-measuring system includes pressure
Power pressure pipe and pressure transmitter, described pressure pressure pipe is arranged at installation frame inner bottom part, and described pressure transmitter is arranged at
Installation frame is outer and is connected with pressure pressure pipe；Described microprocessor is arranged at outside installation frame, differential pressure transmitter, temperature pick-up
Device is connected with microprocessor by described hub respectively with pressure transmitter；Described display device is arranged at outside installation frame,
It is connected with described microprocessor by hub.
The novel a kind of temperature and pressure flow measuring apparatus of this use, wherein said microprocessor is STM32 single-chip microcomputer.
The novel a kind of temperature and pressure flow measuring apparatus of this use, wherein said temperature sensor is PT100 temperature sensor.
The novel a kind of temperature and pressure flow measuring apparatus of this use, wherein said hub is RS485 hub.
This utility model a kind of temperature and pressure flow measuring apparatus is from the different of prior art: this utility model one temperature and pressure stream
Measurement apparatus is by temperature, pressure, the differential pressure measurement system integration in same section frame, and in flue, matrix form arranges several
Measuring unit, can measure differential pressure and pressure simultaneously, and differential pressure when measuring differential pressure, each measuring unit measurement obtained carries out average
Calculate, to obtain the mean flow rate of whole section；Measuring differential pressure simultaneously, available static pressure measurement system pipeline, measure flue
Interior pressure；In flue, temperature sensor is according to flue and installation frame size, customizes in proportion；Compared with prior art, this reality
With novel employing tower structure, integrated temperature, pressure, differential pressure measuring installation, while measurement flow rate, gather temperature in flue
Degree, pressure data, compensate calculating to flow velocity, make flow speed data accuracy be greatly improved；Dot density is measured in installation frame
Height, is evenly distributed, and structure is ingenious, measures the average differential pressure of whole flue section with face generation point, and accuracy, stability carry significantly
High.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of this utility model a kind of temperature and pressure flow measuring apparatus.
Fig. 2 is the front view of this utility model a kind of temperature and pressure flow measuring apparatus measuring unit.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, this utility model one temperature and pressure flow measuring apparatus, measure system including installation frame 1, total head
3, static pressure measurement system 4, differential pressure transmitter 6, temperature measurement system, pressure-measuring system, RS485 hub 11, STM32 monolithic
Machine 12 and display device 13；Installation frame 1 is fixed in flue, and total head is measured system 3 and included impulse main line 2 and measuring unit 5,
Impulse main line 2 is fixed in installation frame 1, is divided into several rectangular areas, is provided with in each rectangular area in installation frame 1
One measuring unit 5, measuring unit 5 includes pressure guiding pipe 52 and impulse branch road 51, and pressure guiding pipe is connected to by impulse leg parallel
Both sides, impulse main line, the upper and lower two ends of pressure guiding pipe are provided with towards inclination angle, air intake vent direction otch 53, inclination angle otch 53 and air-flow angle
It it is 45 °；Static pressure measurement 4 system is set in parallel in total head and measures on rear side of system 3, and it is identical that its structure and described total head measure system 3,
Inclination angle otch 53 direction air intake vent dorsad；Total head measure system 3 and static pressure measurement system 4 respectively be arranged at outside installation frame 1
Differential pressure transmitter 6 be connected；Temperature measurement system includes PTl00 temperature sensor 7 and temperature transmitter 8, PTl00 temperature sensing
Device 7 is arranged at installation frame 1 inner bottom part, and PTl00 temperature sensor 7 is connected with the temperature transmitter 8 being arranged at outside installation frame；
Pressure-measuring system includes pressure pressure pipe 9 and pressure transmitter 10, and pressure pressure pipe 9 is arranged at installation frame 1 inner bottom part, pressure
Power transmitter 10 is arranged at outside installation frame 1 and is connected with pressure pressure pipe 9；Described STM32 single-chip microcomputer 12 is arranged at installing frame
Outside frame 1, differential pressure transmitter 6, temperature transmitter 8 and pressure transmitter 10 are respectively by RS485 hub 11 and STM32 single-chip microcomputer
12 are connected；Described display device 13 is arranged at outside installation frame 1, is connected with STM32 single-chip microcomputer 12 by RS485 hub 11.
The operation principle of this utility model a kind of temperature and pressure flow measuring apparatus is: temperature and pressure flow measuring apparatus is divided into differential pressure measurement system
System, pressure-measuring system and three parts of temperature measurement system, wherein flue is divided into several by matrix form differential pressure measurement system
The rectangular area that area is identical, is provided with a measuring unit in each rectangular area, all have 4 in the most each rectangular area
Individual inclination angle otch impulse point, can measure total head and static pressure；So, identical by being provided with some areas in flue measurement list
Unit, the total head and the static pressure that these measuring units are gathered are input in differential pressure transmitter, and carry out mean value calculation, obtain flue
The average total head of cross section and average static pressure, just can draw average measurement differential pressure through calculating.According to average differential pressure, single-chip microcomputer is i.e.
The flow condition of whole section can be calculated.Owing to temperature, pressure all can produce impact, this utility model to the flow velocity in flue
Integrated temperature detecting system and pressure detecting system, pressure transmitter, temperature transmitter send the signal detected to monolithic
Machine, is compensated calculating by single-chip microcomputer according to temperature, pressure data, thus draws more accurate flow velocity number flow condition
According to.Finally, by display device, above-mentioned data are shown in real time.
This utility model one temperature and pressure flow measuring apparatus, by temperature, pressure, the differential pressure measurement system integration in same installing frame
In frame；In flue, matrix form arranges several measuring units, can measure differential pressure and pressure simultaneously, when measuring differential pressure, each is surveyed
The differential pressure that amount unit measurement obtains carries out mean value computation, to obtain the mean flow rate of whole section；Measuring differential pressure simultaneously, can
Utilize temperature measurement system and pressure-measuring system that the temperature and pressure in flue is measured, thus flow velocity is compensated
Calculate；Compared with prior art, this utility model uses tower structure, integrated temperature, pressure, differential pressure measuring installation, is surveying
Gather temperature, pressure data in flue while amount flow velocity, flow velocity is compensated calculating, makes flow speed data accuracy significantly carry
High；Measuring dot density in installation frame high, be evenly distributed, structure is ingenious, measures the mean deviation of whole flue section with face generation point
Pressure, accuracy, stability are greatly improved.
Embodiment described above is only to be described preferred implementation of the present utility model, not to this practicality
Novel scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various deformation that the technical scheme of utility model is made and improvement, all should fall into the protection that this utility model claims determine
In the range of.
Claims (4)
1. a temperature and pressure flow measuring apparatus, it is characterised in that include that installation frame, total head measure system, static pressure measurement system, difference
Pressure transmitter, temperature measurement system, pressure-measuring system, hub, display device and microprocessor, described installation frame is fixed
In flue, described total head is measured system and is included that impulse main line and measuring unit, described impulse main line are fixed in installation frame,
It is divided into several rectangular areas in described installation frame, in each rectangular area, is provided with a measuring unit, described measurement list
Unit includes pressure guiding pipe and impulse branch road, and described pressure guiding pipe is connected to both sides, impulse main line by impulse leg parallel, on pressure guiding pipe
Lower two ends are provided with towards inclination angle, air intake vent direction otch, and described inclination angle otch and air-flow angle are 45 °；Described static pressure measurement system
Being set in parallel on rear side of total head measurement system, it is identical that its structure measures system with described total head, inclination angle cut-out direction inlet air dorsad
Mouthful；Described total head is measured system and is connected with the differential pressure transmitter being arranged at outside installation frame respectively with described static pressure measurement system；
Described temperature measurement system includes that temperature sensor and temperature transmitter, described temperature sensor are arranged at installation frame inner bottom
Portion, described temperature transmitter is arranged at outside installation frame and is connected with temperature sensor；Described pressure-measuring system includes pressure
Pressure pipe and pressure transmitter, described pressure pressure pipe is arranged at installation frame inner bottom part, and described pressure transmitter is arranged at peace
The frame that frames up is outer and is connected with pressure pressure pipe；Described microprocessor is arranged at outside installation frame, differential pressure transmitter, temperature transmitter
It is connected with microprocessor by described hub respectively with pressure transmitter；Described display device is arranged at outside installation frame, logical
Cross hub to be connected with described microprocessor.
2. a kind of temperature and pressure flow measuring apparatus as claimed in claim 1, it is characterised in that described microprocessor is STM32 monolithic
Machine.
3. a kind of temperature and pressure flow measuring apparatus as claimed in claim 1, it is characterised in that described temperature sensor is PT100 temperature
Degree sensor.
4. a kind of temperature and pressure flow measuring apparatus as claimed in claim 1, it is characterised in that described hub is RS485 hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620309857.6U CN205785289U (en) | 2016-04-14 | 2016-04-14 | A kind of temperature and pressure flow measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620309857.6U CN205785289U (en) | 2016-04-14 | 2016-04-14 | A kind of temperature and pressure flow measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205785289U true CN205785289U (en) | 2016-12-07 |
Family
ID=57414691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620309857.6U Expired - Fee Related CN205785289U (en) | 2016-04-14 | 2016-04-14 | A kind of temperature and pressure flow measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205785289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621327A (en) * | 2017-08-23 | 2018-01-23 | 山西省环境科学研究院 | A kind of full-automatic multipoint pressure measure device of pollution sources flue gas |
-
2016
- 2016-04-14 CN CN201620309857.6U patent/CN205785289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621327A (en) * | 2017-08-23 | 2018-01-23 | 山西省环境科学研究院 | A kind of full-automatic multipoint pressure measure device of pollution sources flue gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180414 |