CN209878028U - Low-resistance flow meter - Google Patents
Low-resistance flow meter Download PDFInfo
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- CN209878028U CN209878028U CN201920536593.1U CN201920536593U CN209878028U CN 209878028 U CN209878028 U CN 209878028U CN 201920536593 U CN201920536593 U CN 201920536593U CN 209878028 U CN209878028 U CN 209878028U
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- 239000012530 fluid Substances 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a low-resistance flow meter, which comprises a connecting flange, a measuring tube, a low-flow-resistance throttling element, a throttling element supporting device, a front pressure-taking port and a rear pressure-taking port, wherein the connecting flange is welded and fixed at both ends of the measuring tube; the low flow resistance throttling element is of an integrated structure with a smooth surface, the middle section of the low flow resistance throttling element is a cylinder, the left end of the low flow resistance throttling element is a semi-ellipsoid, and the right end of the low flow resistance throttling element is a cone with a smooth top end; the throttling element supporting devices are supported on a cylinder in the middle of the low-flow-resistance throttling element, and each throttling element supporting device comprises three fixed blocks which are uniformly distributed along the circumferential direction of a cylindrical surface of the cylinder; the front pressure taking port is arranged on the pipe wall of the measuring pipe and is positioned on the left side of the low flow-resisting throttling element along the flow direction of the medium; the back pressure taking port is arranged on the pipe wall of the measuring pipe and is positioned right above the cylinder of the middle part of the low flow choking throttling piece, and compared with other differential pressure type flow meters, the flow meter has higher precision, lower pressure loss and wider measuring range.
Description
Technical Field
The utility model relates to an instrument trade technical field, in particular to low resistance flow meter.
Background
In the industries of electric power, metallurgy, chemical industry, gas and the like, a plurality of industrial media need to adopt differential pressure type flow meters for flow measurement, frequently adopted differential pressure type flow meters are provided with orifice plates, nozzles or V-cone flow meters, and the products can meet the general flow measurement requirements. However, it is very difficult to measure the flow with the flow measurement device requiring high accuracy, low pressure loss and large measuring range.
In summary, how to design a flowmeter can be specially adapted to an industrial field requiring a flowmeter with high precision, low pressure loss and large measuring range to perform measurement work becomes a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low resistance flow flowmeter can be applicable to specially that the flowmeter that needs high accuracy, low-pressure loss, wide range carries out the industrial field of measurement work.
In order to solve the technical problem, the utility model provides a following technical scheme:
a low-resistance flow meter comprises a connecting flange, a measuring pipe, a low-flow-resistance throttling piece, a throttling piece supporting device, a front pressure taking port and a rear pressure taking port, wherein the connecting flange is welded and fixed at two ends of the measuring pipe; the low flow resistance throttling element is of an integrated structure with a smooth surface, is arranged in a pipeline of the measuring pipe and is coaxial with the measuring pipe, the middle section of the low flow resistance throttling element is a cylinder, the left end of the low flow resistance throttling element is aligned to the fluid direction and is a hemiellipsoid formed by rotating for a circle along the long semi-axis of the ellipse, the plane end of the hemiellipsoid is in butt joint with the end surface of the cylinder, the length of the short axis of the hemiellipsoid is equal to the diameter of the section of the cylinder, the right end of the low flow resistance throttling element is a cone with a smooth top end, the bottom surface of the cone is in butt joint with the right side of the cylinder, and the diameter of the bottom surface of the; the throttling element supporting devices are supported on a cylinder in the middle of the low-flow-resistance throttling element, each throttling element supporting device comprises three fixed blocks which are uniformly distributed along the circumferential direction of a cylindrical surface of the cylinder, one end of each fixed block is fixedly connected with the cylinder, and the other end of each fixed block is fixed on the inner wall of the measuring pipe; the front pressure taking port is formed in the pipe wall of the measuring pipe and is positioned on the left side of the low flow resistance throttling element along the flow direction of the medium; the rear pressure taking port is formed in the pipe wall of the measuring pipe and is located right above the cylinder of the middle part of the low flow resistance throttling piece.
Preferably, one end of the fixing block is welded and fixed on the cylinder of the middle part of the low flow-resisting throttling element, and the other end of the fixing block is welded and fixed on the measuring pipe.
The low-resistance flow meter provided by the utility model, when the fluid flows through the gap formed by the low-resistance flow throttling element and the measuring pipe which are supported in the pipeline through the fixed pipe, the fluid flow speed is gradually and stably accelerated, the maximum diameter section of the low-resistance flow throttling element is the cylinder section, the static pressure reaches the minimum, a back pressure taking port is arranged above the low-resistance flow throttling element, a front pressure taking port is arranged at a certain point in front of the low-resistance flow throttling element, the difference between the static pressure measured by the front pressure taking port and the static pressure measured by the back pressure taking port of the low-resistance flow throttling element is commonly called as differential pressure, which is related to the medium flow in the pipeline, namely the square root of the differential pressure is in direct proportion to the flow, the flow can be calculated by measuring the differential pressure of the low-resistance flow meter, because the fluid passes through the measuring pipe of the low-resistance flow meter and the low-resistance flow throttling element, the fluid form is the largest ring system formed by gradually and stably diffusing, the flow rate of the full measuring pipe is gradually reduced and recovered after the flow rate is stabilized, and the whole process does not generate sudden change, so that the measured differential pressure signal is very stable, the linearity is high, the interference signal is small, and the flowmeter has higher precision, lower pressure loss and wider measuring range compared with other differential pressure flowmeters.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of a front view of a low resistance flow meter provided by the present invention;
FIG. 2 is a side view of a low flow resistance flow meter;
fig. 3 is a schematic view of a low flow resistance throttle.
In the figure: 1. a connecting flange; 2. a measurement tube; 3. a low flow restriction throttle; 31. a semi-ellipsoid; 32. a cylinder; 33. a cone; 4. a front pressure-taking port; 5. a rear pressure port is obtained; 6. a throttle support device.
Detailed Description
The core of the utility model is to provide a low resistance flow meter can be applicable to specially that the flowmeter that needs high accuracy, low-pressure loss, wide range carries out the industrial field of measurement work.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1 to fig. 3, which are cross-sectional views of a low resistance flow meter according to the present invention; FIG. 2 is a side view of a low flow resistance flow meter; fig. 3 is a schematic view of a low flow resistance throttle.
The low-resistance flow meter provided by the utility model comprises a connecting flange 1, a measuring pipe 2, a low-flow-resistance throttling element 3, a throttling element supporting device 6, a front pressure tapping 4 and a rear pressure tapping 5, wherein the connecting flange is welded and fixed at both ends of the measuring pipe; the low flow resistance throttling element is of an integrated structure with a smooth surface, is arranged in a pipeline of the measuring pipe and is coaxial with the measuring pipe, the middle section of the low flow resistance throttling element is a cylinder 32, the left end of the low flow resistance throttling element is right in the direction of a fluid and is a hemiellipsoid 31 formed by rotating for a circle along the long semi-axis of the ellipse, the plane end of the hemiellipsoid is in butt joint with the end surface of the cylinder, the length of the short axis of the hemiellipsoid is equal to the diameter of the section of the cylinder, the right end of the low flow resistance throttling element is a cone 33 with a smooth top end, the bottom surface of the cone is in butt joint with the right side of the cylinder, and the; the throttling element supporting devices are supported on a cylinder in the middle of the low-flow-resistance throttling element, each throttling element supporting device comprises three fixed blocks which are uniformly distributed along the circumferential direction of a cylindrical surface of the cylinder, one end of each fixed block is fixedly connected with the cylinder, and the other end of each fixed block is fixed on the inner wall of the measuring pipe; the front pressure taking port is arranged on the pipe wall of the measuring pipe and is positioned on the left side of the low flow-resisting throttling element along the flow direction of the medium; the back pressure taking port is arranged on the pipe wall of the measuring pipe and is positioned right above the cylinder of the middle part of the low flow choking throttling piece.
The low-resistance flow meter provided by the utility model, when the fluid flows through the gap formed by the low-resistance flow throttling element and the measuring pipe which are supported in the pipeline through the fixed pipe, the fluid flow speed is gradually and stably accelerated, the maximum diameter section of the low-resistance flow throttling element is the cylinder section, the static pressure reaches the minimum, a back pressure taking port is arranged above the low-resistance flow throttling element, a front pressure taking port is arranged at a certain point in front of the low-resistance flow throttling element, the difference between the static pressure measured by the front pressure taking port and the static pressure measured by the back pressure taking port of the low-resistance flow throttling element is commonly called as differential pressure, which is related to the medium flow in the pipeline, namely the square root of the differential pressure is in direct proportion to the flow, the flow can be calculated by measuring the differential pressure of the low-resistance flow meter, because the fluid passes through the measuring pipe of the low-resistance flow meter and the low-resistance flow throttling element, the fluid form is the largest ring system formed by gradually and stably diffusing, the flow rate of the full measuring pipe is gradually reduced and recovered after the flow rate is stabilized, and the whole process does not generate sudden change, so that the measured differential pressure signal is very stable, the linearity is high, the interference signal is small, and the flowmeter has higher precision, lower pressure loss and wider measuring range compared with other differential pressure flowmeters.
The utility model discloses an in the embodiment, low resistance flow meter, the one end welded fastening of fixed block just other end welded fastening is surveyed buret on the cylinder of the mid portion of low choked flow throttling element, has guaranteed structural stability.
The above is to the present invention provides a low flow resistance flowmeter. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (2)
1. A low-resistance flow meter is characterized by comprising a connecting flange, a measuring pipe, a low-flow-resistance throttling piece, a throttling piece supporting device, a front pressure taking port and a rear pressure taking port, wherein the connecting flange is welded and fixed at both ends of the measuring pipe; the low flow resistance throttling element is of an integrated structure with a smooth surface, is arranged in a pipeline of the measuring pipe and is coaxial with the measuring pipe, the middle section of the low flow resistance throttling element is a cylinder, the left end of the low flow resistance throttling element is aligned to the fluid direction and is a hemiellipsoid formed by rotating for a circle along the long semi-axis of the ellipse, the plane end of the hemiellipsoid is in butt joint with the end surface of the cylinder, the length of the short axis of the hemiellipsoid is equal to the diameter of the section of the cylinder, the right end of the low flow resistance throttling element is a cone with a smooth top end, the bottom surface of the cone is in butt joint with the right side of the cylinder, and the diameter of the bottom surface of the; the throttling element supporting devices are supported on a cylinder in the middle of the low-flow-resistance throttling element, each throttling element supporting device comprises three fixed blocks which are uniformly distributed along the circumferential direction of a cylindrical surface of the cylinder, one end of each fixed block is fixedly connected with the cylinder, and the other end of each fixed block is fixed on the inner wall of the measuring pipe; the front pressure taking port is formed in the pipe wall of the measuring pipe and is positioned on the left side of the low flow resistance throttling element along the flow direction of the medium; the rear pressure taking port is formed in the pipe wall of the measuring pipe and is located right above the cylinder of the middle part of the low flow resistance throttling piece.
2. The low flow resistance flowmeter of claim 1, wherein the anchor block has one end welded to the cylindrical body of the intermediate portion of the low flow-resistant throttling element and the other end welded to the measurement pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536593.1U CN209878028U (en) | 2019-04-19 | 2019-04-19 | Low-resistance flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920536593.1U CN209878028U (en) | 2019-04-19 | 2019-04-19 | Low-resistance flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209878028U true CN209878028U (en) | 2019-12-31 |
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ID=68960828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920536593.1U Expired - Fee Related CN209878028U (en) | 2019-04-19 | 2019-04-19 | Low-resistance flow meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN209878028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485814A (en) * | 2022-02-22 | 2022-05-13 | 江苏华尔威科技集团有限公司 | High-precision balance channel flowmeter |
-
2019
- 2019-04-19 CN CN201920536593.1U patent/CN209878028U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485814A (en) * | 2022-02-22 | 2022-05-13 | 江苏华尔威科技集团有限公司 | High-precision balance channel flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20191231 |