CN219391004U - Gas pipeline flow velocity and flow measuring device - Google Patents
Gas pipeline flow velocity and flow measuring device Download PDFInfo
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- CN219391004U CN219391004U CN202223143424.2U CN202223143424U CN219391004U CN 219391004 U CN219391004 U CN 219391004U CN 202223143424 U CN202223143424 U CN 202223143424U CN 219391004 U CN219391004 U CN 219391004U
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Abstract
The utility model discloses a gas pipeline flow velocity and flow measuring device, which belongs to the technical field of gas flow velocity measurement, and comprises a main body, wherein the cross section of the main body is in a water drop shape, the air flow facing surface is in an arc shape, the air flow backing surface is in a cone shape, and the device further comprises: the inner wall in the main body is provided with two non-communicated full-pressure cavities and a static pressure cavity, the full-pressure cavity is close to the windward flow surface, and the static pressure cavity is close to the back flow surface; the full-pressure cavity is provided with full-pressure holes close to the airflow facing surface, and the number of the full-pressure holes is a plurality of full-pressure holes; the static pressure holes are symmetrically formed in the upper side and the lower side of the static pressure cavity, the number of the static pressure holes is a plurality of, and the full pressure holes and the static pressure holes are positioned at the same cross section position; the utility model can measure the gas pressure at multiple points, take the pressure at the points more stably, is more convenient to install, does not influence the additional installation of the heat insulation layer of the gas pipeline, reduces the occupied area of the surface of the pipeline, and has smaller angle dependence.
Description
Technical Field
The utility model relates to the technical field of gas flow rate measurement, in particular to a gas pipeline flow rate and flow measurement device.
Background
Currently, when measuring the flow rate and the flow quantity of gas in a pipeline, the flow rate is often calculated by using the Bernoulli (kinetic energy+gravitational potential energy+pressure potential energy=constant) principle, and the flow rate is calculated by using an aerodynamic pressure value as a basis; data of atmospheric pressure and air temperature can be added in the flow rate calculation process, so that more accurate flow rate data can be obtained. Currently, a pitot tube dynamic pressure method is more, the pitot tube accords with the Bernoulli principle, full pressure data and static pressure data of gas are measured simultaneously by using the pitot tube, dynamic pressure data of the gas are obtained, and then the flow velocity and flow of the gas in a pipeline are calculated by using the dynamic pressure data of the gas; the pitot tube can be selected to use types of L-type, S-type, I-type, etc., and different types of pitot tubes may have different coefficients.
The pitot tube is used for measuring the dynamic pressure of gas in a pipeline in a single point mode, each pitot tube can only measure the total pressure and the static pressure of 1 position, but the flow of the gas in the pipeline is disturbed and nonuniform, and the single point measurement cannot objectively reflect the actual flow speed and the actual flow rate of the whole cross section of the pipeline; if the multiple point value is taken in the gas pipeline, a plurality of pitot tubes are needed to be used together, each pitot tube needs to be drilled on the pipeline and provided with a flange when being installed, multiple times of perforating operation are needed when the pitot tubes are installed, and the full pressure end and the static pressure end of all the pitot tubes are additionally connected in parallel, so that the frequency and the difficulty and the cost of installation are increased, the pipeline is more damaged and the risks of safety and leakage exist, and the multiple pitot tubes can also cause new air flow disorder in the pipeline and increase the air flow resistance in the pipeline; the pitot tubes can protrude out of one part of the outer wall of the pipeline after being installed, the surface of the pipeline is provided with a plurality of protruding positions, the installation positions of the pipeline are blocked, and the installation difficulty and the cost are increased when the pipeline needs to be additionally provided with the heat insulation layer due to the protruding positions of the installed pitot tubes; since the pitot tube belongs to single-point measurement, the pipe endothelial tube angle needs to be paid attention to during installation, namely the pitot tube measurement position needs to be parallel to the pipe, and the angle error between the pitot tube and the pipe directly influences the full pressure and static pressure measurement, thereby influencing the calculation of the gas flow rate and the gas flow quantity.
Disclosure of Invention
The present utility model is directed to a device for measuring the flow rate and the flow rate of a gas pipeline, which solves the problems set forth in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a gas pipeline velocity of flow measuring device, includes the main part, the cross section of main part is water droplet form, and the face of facing the air current is circular arc, and the face of backing the air current is the taper, still includes:
the inner wall in the main body is provided with two non-communicated full-pressure cavities and a static pressure cavity, the full-pressure cavity is close to the windward flow surface, and the static pressure cavity is close to the back flow surface;
the full-pressure cavity is provided with a plurality of full-pressure holes close to the airflow-facing surface and uniformly arranged on the airflow-facing surface for measuring the full pressure;
the static pressure holes are symmetrically formed in the upper side and the lower side of the static pressure cavity, the number of the static pressure holes is a plurality of, the static pressure holes in the upper side and the lower side of the static pressure cavity are uniformly arranged, and the full pressure holes and the static pressure holes are arranged at the same cross section position and are used for measuring static pressure.
As a further scheme of the utility model: the main body is in a long straight ruler shape.
As a further scheme of the utility model: the main body is made of hard materials.
As a further scheme of the utility model: the surface of the main body and the inner wall of the cavity of the full-pressure cavity and the static pressure cavity are respectively provided with an anti-corrosion layer.
As a further scheme of the utility model: the thickness of the main body is 8.5mm, the width of the main body is 37mm, the total number of the hydrostatic holes is not less than 4, and the number of the hydrostatic holes is not less than 8.
Compared with the prior art, the utility model has the beneficial effects that: the utility model has the advantages that the pressure positions of the gas are more objective, the pressure of each point can be automatically averaged in the pressure cavity and is more stable by arranging the plurality of full pressure holes and the static pressure holes, the gas flow resistance is reduced, the manufacturing materials are easy to obtain and process, the installation is more convenient, the heat preservation layer is not affected, the occupied area of the surface of the gas pipeline is reduced, and the angle dependence is smaller.
Drawings
Fig. 1 is a cross-sectional view of a gas conduit flow rate and volume measurement device.
Fig. 2 is a top view of a gas conduit flow rate and volume measurement device.
Reference numerals annotate: 1-main body, 2-full pressure cavity, 3-static pressure cavity, 4-full pressure hole and 5-static pressure hole.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
As an embodiment of the present utility model, referring to fig. 1 to 2, a device for measuring a flow rate and a flow volume of a gas pipeline includes a main body 1, wherein a cross section of the main body 1 is in a water drop shape, an air flow facing surface is in an arc shape, and an air flow backing surface is in a cone shape, and further includes:
the full-pressure cavity 2, the inner wall in the main body 1 is provided with two non-communicated full-pressure cavities 2 and a static pressure cavity 3, the full-pressure cavity 2 is close to the windward flow surface, and the static pressure cavity 3 is close to the back flow surface;
the full pressure cavity 2 is provided with full pressure holes 4 close to the airflow facing surface, and the number of the full pressure holes 4 is a plurality of the full pressure holes and are uniformly arranged on the airflow facing surface for measuring the full pressure;
the static pressure holes 5 are symmetrically arranged on the upper side and the lower side of the static pressure cavity 3, the number of the static pressure holes 5 is a plurality of, and the static pressure holes 5 on the upper side and the lower side of the static pressure cavity 3 are uniformly arranged and used for measuring static pressure.
In the embodiment of the present utility model, the main body 1 has a long straight edge shape.
In the embodiment of the present utility model, the main body 1 is made of a hard material, which is convenient for processing.
In the embodiment of the utility model, the surface of the main body 1, the inner walls of the cavities of the full-pressure cavity 2 and the static pressure cavity 3 are respectively provided with an anti-corrosion layer, which is beneficial to long-term use of equipment and avoids corrosion.
In the embodiment of the utility model, the thickness of the main body 1 is 8.5mm, the width is 37mm, the number of the full-pressure holes 4 is not less than 4, and the number of the static pressure holes 5 is not less than 8.
Working principle: the multiple full pressure holes 4 and the static pressure holes 5 are arranged, so that the section of the pipeline can be simultaneously valued at multiple points (full pressure and static pressure) and the average gas full pressure and static pressure are conducted, the gas dynamic pressure can be calculated, and a dynamic pressure measuring instrument or instrument and related equipment can be connected; in view of the fact that the thickness of the body 1 is only 8.5mm, the resistance generated in the gas duct is very small and does not hinder the passage of gas; in use, the outer wall of the gas pipeline is required to be perforated, the device is inserted into the gas pipeline and fixed, and the full pressure and static pressure data in the gas pipeline can be acquired without connecting other electronic devices or setting.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. The utility model provides a gas pipeline velocity of flow measuring device, includes the main part, its characterized in that, the cross section of main part is water droplet form, and the face of facing the air current is circular arc, and the face of backing the air current is the taper, still includes:
the inner wall in the main body is provided with two non-communicated full-pressure cavities and a static pressure cavity, the full-pressure cavity is close to the windward flow surface, and the static pressure cavity is close to the back flow surface;
the full-pressure cavity is provided with a plurality of full-pressure holes close to the airflow-facing surface and uniformly arranged on the airflow-facing surface for measuring the full pressure;
the static pressure holes are symmetrically formed in the upper side and the lower side of the static pressure cavity, the number of the static pressure holes is a plurality of, the static pressure holes in the upper side and the lower side of the static pressure cavity are uniformly arranged, and the full pressure holes and the static pressure holes are arranged at the same cross section position and are used for measuring static pressure.
2. The gas conduit flow rate and volume measurement device of claim 1, wherein the body is in the shape of an elongated straight ruler.
3. The gas conduit flow rate and volume measurement device of claim 1, wherein the body is a rigid material.
4. A gas pipeline flow rate and flow measurement device according to any one of claims 1-3, wherein the surface of the main body and the inner walls of the full-pressure cavity and the static-pressure cavity are respectively provided with an anti-corrosion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223143424.2U CN219391004U (en) | 2022-11-25 | 2022-11-25 | Gas pipeline flow velocity and flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223143424.2U CN219391004U (en) | 2022-11-25 | 2022-11-25 | Gas pipeline flow velocity and flow measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219391004U true CN219391004U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223143424.2U Active CN219391004U (en) | 2022-11-25 | 2022-11-25 | Gas pipeline flow velocity and flow measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219391004U (en) |
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2022
- 2022-11-25 CN CN202223143424.2U patent/CN219391004U/en active Active
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