CN212539289U - Novel flow monitoring system - Google Patents
Novel flow monitoring system Download PDFInfo
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- CN212539289U CN212539289U CN202021813643.5U CN202021813643U CN212539289U CN 212539289 U CN212539289 U CN 212539289U CN 202021813643 U CN202021813643 U CN 202021813643U CN 212539289 U CN212539289 U CN 212539289U
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Abstract
The utility model relates to a novel flow monitoring system, including the fan, the flow bumps the mouth, detect sampling port and system pressure table, the output of fan bumps the input of mouth with the flow through test tube and is connected, the output that the flow bumped the mouth is connected with the input that detects the sampling port through test tube, the output that detects the sampling port is connected with system pressure table's input through test tube, fan and flow bump to connect on the test tube between the mouth and be provided with temperature and humidity sensor and absolute pressure changer, the flow bumps parallelly connected first differential pressure table that is provided with on the test tube at both ends about the mouth, it is provided with the second differential pressure table to detect parallelly connected on the test tube at both ends about the sampling port. The utility model relates to a novel flow monitoring system, through using temperature and humidity sensor, differential pressure table, absolute pressure changer test flow to calculate required parameter, use flow calculation formula, utilize the sensor to be close the setting value with flow accuracy value, calculation error is less.
Description
Technical Field
The utility model relates to a flow monitoring correlation technique field especially relates to a novel flow monitoring system.
Background
In the current equipment and test method for metering air flow in the market, the used flow calculation method is mostly the measurement of an electronic flowmeter, and the used formula is as follows:
in the formula:
q-fluid flow through nozzle (m)3/h)；
C-nozzle flow dilution;
a-nozzle throat area (m)2)；
Delta p-front and back static pressure difference (Pa) of the touch mouth;
fluid density (kg/m) of the throat of the p-nozzle3)；
Factors that affect the accuracy of the metered air flow are the absolute temperature of the air in the duct, the density of the air in the duct, the humidity, temperature, system pressure, etc. of the air in the duct.
From the above, it can be seen that the single approach of using an electronic flow meter as the flow value has a large error.
In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a new flow monitoring system, so that the system has more industrial utility value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a novel flow monitoring system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel flow monitoring system, the high-efficient integrated circuit comprises a fan, the flow bumps the mouth, detect thief hatch and system pressure table, the output of fan bumps the input of mouth through test tube and flow and is connected, the output that the flow bumped the mouth is connected with the input that detects the thief hatch through test tube, the output that detects the thief hatch is connected with system pressure table's input through test tube, fan and flow bump to connect on the test tube between the mouth and be provided with temperature and humidity sensor and absolute pressure changer, the flow bumps and is provided with first differential pressure table on the test tube at both ends about the mouth in parallel, it is provided with the second differential pressure table to detect to connect in parallel on the test tube at both ends about the thief hatch.
As a further improvement, the upper part and the lower part of the detection sampling port are clamped by an upper clamp and a lower clamp.
Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:
the utility model relates to a novel flow monitoring system, through using temperature and humidity sensor, differential pressure table, absolute pressure changer test flow to calculate required parameter, use flow calculation formula, utilize the sensor to be close the setting value with flow accuracy value, calculation error is less.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of the novel flow monitoring system of the present invention.
In the drawings, the meanings of the reference numerals are as follows.
1 fan 2 temperature and humidity sensor
3 Absolute pressure transmitter 4 first differential pressure gauge
5 flow bumps mouth 6 anchor clamps from top to bottom
7 system pressure gauge 8 detection sampling port
9 second pressure difference meter
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in figure 1 of the drawings, in which,
the utility model provides a novel flow monitoring system, including fan 1, the flow bumps mouth 5, detect thief hatch 8 and system pressure table 7, fan 1's output is bumped the input of mouth 5 with the flow through the test tube and is connected, the flow bumps the output of mouth 5 and is connected with the input that detects thief hatch 8 through the test tube, the output that detects thief hatch 8 is connected with system pressure table 7's input through the test tube, fan 1 and flow bump to be connected on the test tube between mouth 5 and be provided with temperature and humidity sensor 2 and absolute pressure changer 3, the flow bumps and is provided with first differential pressure table 4 on the test tube at the upper and lower both ends of mouth 5 in parallel, it is provided with second differential pressure table 9 to detect parallelly connected on the test tube at thief hatch 8 upper and lower both ends.
Preferably, the upper and lower sides of the detection sampling port 8 are held by upper and lower clamps 6.
Wherein the content of the first and second substances,
a fan 1: supplying gas to the whole device;
temperature and humidity sensor 2: testing the temperature and humidity of the air in the test pipeline;
absolute pressure transmitter 3: testing the atmospheric pressure of the device under the working condition;
a pressure difference meter: detecting the upstream and downstream pressure difference of the airflow after passing through the device;
flow collision nozzle 5: controlling the cross-sectional area of the flow as it passes through;
and (3) upper and lower clamps 6: a detection sampling port 8 for measuring a detected sample, so that a system pressure gauge 7 can detect more accurately;
a system pressure gauge 7: the downstream pressure differential was tested.
In the system, a fan 1 provides air inflow, a temperature and humidity sensor 2 tests the temperature T and the humidity H in a test pipeline, and an absolute pressure sensor 3 tests the atmospheric pressure rho of the environment where equipment is located0Differential pressure is formed through a flow nozzle 5, a differential pressure value delta P is obtained through testing of a first differential pressure gauge 4, the pressure difference value delta P continues to a detection sampling port 8 at an upstream clamp 6 and a downstream clamp along the direction of air flow, differential pressure is tested through a second differential pressure gauge 9, and finally a numerical value P is tested through a system pressure gauge 90And calculating by the following formula to obtain an actual flow value.
Attached: air quantity calculation formula
1. Calculating saturated water vapor pressure:
in the formula:
ewsaturated water vapor pressure at temperature-T, Pa
T-Absolute temperature of air in the pipe (273.15+ T), K
k—1Pa
A. B, C, D are all constants whose values are as follows:
A—1.2378847×10-5
B—-1.9121316×10-2
C—33.93711047
D—-6.3431645×103
e—2.7183
2. calculating the air density:
in the formula:
rho-air density in the pipe, kg/m3
T-Absolute temperature of air in the pipe (273.15+ T), K
P0Absolute pressure of air in the pipe, Pa
H-relative humidity of air in the pipeline, expressed in decimal number
ew-saturated water vapour pressure, Pa, in the pipe
3. And (3) air volume calculation:
in the formula:
q-flow of air duct, m3/h
k-efflux coefficient, preset to 1, made open to allow manual input
Pi-circumference ratio, taking 3.1416
d-internal diameter of the nozzle, m
Rho-air density in the pipe, kg/m3
Δ p-differential pressure before and after nozzle, Pa
ρ0Air standard density, preset at 1.205kg/m3Is made into an open type and can be manually input
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly referring to the number of technical features being grined. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected: either mechanically or electrically: the terms may be directly connected or indirectly connected through an intermediate member, or may be a communication between two elements.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A novel flow monitoring system is characterized by comprising a fan (1), a flow touch nozzle (5), a detection sampling port (8) and a system pressure gauge (7), the output end of the fan (1) is connected with the input end of the flow touch nozzle (5) through a test pipeline, the output end of the flow touch nozzle (5) is connected with the input end of the detection sampling port (8) through a test pipeline, the output end of the detection sampling port (8) is connected with the input end of a system pressure gauge (7) through a test pipeline, a temperature and humidity sensor (2) and an absolute pressure transmitter (3) are connected and arranged on a test pipeline between the fan (1) and the flow touch nozzle (5), a first differential pressure gauge (4) is connected in parallel on the test pipeline at the upper end and the lower end of the flow touch nozzle (5), and a second differential pressure gauge (9) is connected in parallel on the test pipelines at the upper end and the lower end of the detection sampling port (8).
2. A new type of flow monitoring system as claimed in claim 1, characterized in that the upper and lower sides of the detection sampling port (8) are held by upper and lower clamps (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021813643.5U CN212539289U (en) | 2020-08-26 | 2020-08-26 | Novel flow monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021813643.5U CN212539289U (en) | 2020-08-26 | 2020-08-26 | Novel flow monitoring system |
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| Publication Number | Publication Date |
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| CN212539289U true CN212539289U (en) | 2021-02-12 |
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| CN202021813643.5U Active CN212539289U (en) | 2020-08-26 | 2020-08-26 | Novel flow monitoring system |
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| CN (1) | CN212539289U (en) |
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2020
- 2020-08-26 CN CN202021813643.5U patent/CN212539289U/en active Active
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