CN110686736A - Pressure taking head of Pitotbar flow sensor - Google Patents
Pressure taking head of Pitotbar flow sensor Download PDFInfo
- Publication number
- CN110686736A CN110686736A CN201911110272.6A CN201911110272A CN110686736A CN 110686736 A CN110686736 A CN 110686736A CN 201911110272 A CN201911110272 A CN 201911110272A CN 110686736 A CN110686736 A CN 110686736A
- Authority
- CN
- China
- Prior art keywords
- pressure
- full
- static
- head body
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003068 static effect Effects 0.000 claims abstract description 50
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 16
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pressure taking head of a Pitot-bar flow sensor, which is provided with a cylindrical pressure taking head body, wherein a cylindrical joint with a reduced diameter is formed at the upper part of the pressure taking head body, a plurality of full-pressure channels and static-pressure channels are arranged in the pressure taking head body and are positioned at two opposite sides of the axis of the pressure taking head body, the axis of each full-pressure channel and the axis of each static-pressure channel are parallel to the axis of the pressure taking head body, each full-pressure channel and each static-pressure channel are provided with a full-pressure channel port and a static-pressure channel port which are positioned at the upper end of the cylindrical joint, and the bottom of each full-pressure channel and the bottom of each static-. When the pressure measuring head is applied to measuring the total pressure and the static pressure of the fluid in the pipeline and further measuring the flow of the fluid in the pipeline, the flow of the fluid in the pipeline is measured simultaneously by using a plurality of Pitot-bar flow meters, the average value of all measurement results can be selected as the flow measurement result, the measurement result is relatively accurate, and the measurement precision is higher.
Description
Technical Field
The invention relates to a pressure taking head of a Pitotbar flow sensor.
Background
Among the prior art, pitot bar flow sensor includes the connecting tube and gets the pressure head, it has the cylindricality to get the pressure head body to get the pressure head, the upper portion of getting the pressure head body is formed with the cylindricality that the diameter reduces and connects, get and set up the total pressure passageway and the static pressure passageway that are located the relative both sides of pressure head body axis in the pressure head body, the axis of total pressure passageway and static pressure passageway all parallels with the axis of getting the pressure head body, total pressure passageway and static pressure passageway have total pressure port and the static pressure port that is located the cylindricality and connects the upper end, the lower part of getting the pressure head body has total pressure hole and the static pressure hole that is linked together with total pressure passageway and static pressure passageway. The pressure-taking head is connected with the lower end of the pressure-guiding pipe by a cylindrical joint through a welding method, a full-pressure passage port is connected with the outer pipe of the pressure-guiding pipe, and a static-pressure passage port is connected with the inner pipe of the pressure-guiding pipe to form the Pitotbar flow sensor.
When the pressure-measuring device is used, the Pitot-bar flow sensor is vertically inserted into the pipeline from the side wall of the pipeline, the full pressure hole is opposite to the incoming flow direction of fluid, the static pressure hole is opposite to the outgoing flow direction of the fluid, when the fluid flows in the pipeline, the full pressure interface and the static pressure interface at the upper end of the pressure guide pipe respectively output the full pressure and the static pressure of the fluid flowing in the pipeline, and the flow of the fluid in the pipeline can be calculated according to the fluid mechanics principle by using the full pressure and the static pressure of the fluid flowing in the pipeline.
In the long-term use process of the pressure taking head of the Pitot-bar flow sensor in the prior art, when the pressure taking head is inserted into a measured pipeline, the conditions of scaling of the inner wall of a hole, excessive dust accumulation and crystallization can occur in a full pressure hole or a static pressure hole sometimes, and the outputted full pressure or static signal is not accurate enough, so that the error of the measurement result of the flow of fluid in the pipeline is large.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a pressure taking head of a Pitotbar flow sensor, which can output a plurality of groups of full pressure and static pressure signals of fluid media in a measured pipeline, so that a relatively accurate measurement result can be obtained for the flow of the fluid in the pipeline.
In order to solve the technical problem, the pressure taking head of the Pitot-bar flow sensor is provided with a cylindrical pressure taking head body, wherein a cylindrical joint with a reduced diameter is formed at the upper part of the pressure taking head body, a full-pressure channel and a static-pressure channel are arranged in the pressure taking head body and are positioned at two opposite sides of the axis of the pressure taking head body, the axes of the full-pressure channel and the static-pressure channel are both parallel to the axis of the pressure taking head body, the full-pressure channel and the static-pressure channel are provided with a full-pressure channel port and a static-pressure channel port which are positioned at the upper end of the cylindrical joint, the full-pressure channel and the static-pressure channel are both multiple, the full-pressure channel and the static-pressure channel are arranged at two opposite sides of the axis of the pressure taking head body at intervals, a channel wall is arranged between the adjacent full-pressure channel and static-pressure channel, a; one side of the axial line of the pressure taking head body is provided with a plurality of full-pressure inclined planes which are parallel to each other from top to bottom, the full-pressure inclined planes are respectively intersected with the full-pressure channel to form a plurality of full-pressure holes, a full-pressure channel wall plane which is vertical to a plane determined by the axial line of the full-pressure channel is formed on the full-pressure channel wall between every two adjacent full-pressure holes, the other side of the pressure taking head body opposite to the axial line of the pressure taking head body is provided with a plurality of static pressure inclined planes which are parallel to each other from top to bottom, the static pressure inclined planes are respectively intersected with the static pressure channel to form a plurality of static pressure holes, and a static pressure channel wall plane which is vertical to the plane determined by the axial line of the static.
When the pressure taking head is used for measuring the total pressure and the static pressure of fluid in a pipeline and further measuring the flow of the fluid in the pipeline, the pressure taking head is equivalent to simultaneously measuring the flow of the fluid in the pipeline by using a plurality of Pitot-bar flowmeters, and the flow measuring result can select the average value of all the measuring results, is relatively accurate and has higher measuring precision; when a group of differential pressure signals output by a certain full-pressure guide pipe and a corresponding static pressure guide pipe are transmitted to the flow integrating instrument through the corresponding differential pressure transmitter, and the difference value between the integrated flow value of the flow integrating instrument and the average value of all measurement results exceeds a certain range, the integrating instrument can output the average value of other measurement results, and still can obtain relatively accurate measurement results.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the principal cross-sectional structure of the pressure pick-up head of the Pitot flow sensor of the present invention.
Fig. 2 is a schematic left side view of fig. 1.
Fig. 3 is a schematic right view of fig. 1.
Fig. 4 is a schematic bottom view of fig. 1.
Detailed Description
Referring to fig. 1-4, the pressure taking head of the pitot-bar flow sensor of the invention comprises a cylindrical pressure taking head body 1, a cylindrical joint 2 with a reduced diameter is formed at the upper part of the pressure taking head body 1, a full pressure channel 3 and a static pressure channel 4 which are positioned at two opposite sides of the axis 100 of the pressure taking head body are arranged in the pressure taking head body 1, the axes of the full pressure channel 3 and the static pressure channel 4 are both parallel to the axis 100 of the pressure taking head body, the full pressure channel 3 and the static pressure channel 4 are provided with a full pressure channel port 5 and a static pressure channel port 6 which are positioned at the upper end of the cylindrical joint 2, the full pressure channel 3 and the static pressure channel 4 are both provided with a plurality of channels, and the full pressure channels 3 and the static pressure channels 4 are arranged at two opposite sides of the axis 100. The axes of the full-pressure channels 3 and the static-pressure channels 4 are parallel to the axis 100 of the pressure taking head body and are positioned in the same plane, each full-pressure channel 3 and the static-pressure channel 4 are provided with a full-pressure channel opening 5 and a static-pressure channel opening 6 at the upper end of the cylindrical joint 2, a channel wall 7 is arranged between the adjacent full-pressure channels 3 and the static-pressure channels 4, a full-pressure channel wall 31 is arranged between the adjacent full-pressure channels 3, and a static-pressure channel wall 41 is arranged between the adjacent static-pressure channels 4. One side of the pressure taking head body axis 100 is provided with a plurality of full pressure inclined planes 8 which are parallel to each other from top to bottom, the full pressure inclined planes 8 are respectively intersected with the full pressure channel 3 to form a plurality of full pressure holes 32, a full pressure channel wall plane 33 which is vertical to a plane determined by the axis of the full pressure channel 3 is formed on a full pressure channel wall 31 between every two adjacent full pressure holes 32, a full pressure channel wall intersecting line 34 on the full pressure channel wall 31 between the full pressure channel wall plane 33 and the adjacent full pressure inclined plane 8 is parallel to each other and is parallel to the end surface of the cylindrical pressure taking head body 1, the other side opposite to the pressure taking head body axis 100 is provided with a plurality of static pressure inclined planes 9 which are parallel to each other from top to bottom, the static pressure inclined planes 9 are respectively intersected with the static pressure channel 4 to form a plurality of static pressure holes 42, a static pressure channel wall plane 43 which is vertical to the plane determined by the axis of the static pressure channel 4 is formed on a static pressure channel wall 41, the static pressure channel wall intersection lines 44 on the static pressure channel walls 41 between the static pressure channel wall flat surfaces 43 and the adjacent static pressure inclined surfaces 9 are parallel to each other and to the end surface of the cylindrical pressure tapping head body 1. The channel wall intersection lines 71, 72 formed by the intersection of the full-pressure inclined surface 8 and the static-pressure inclined surface 9 which are positioned at the lowest position with the channel wall 7 are parallel to each other and are vertical to the plane determined by the axes of the full-pressure channel 3 or the static-pressure channel 4.
The differential pressure between each positive pressure channel and the negative pressure channel is different in proportion to the pipeline due to the fact that the insertion depth of the inserted pipeline is different in proportion to the pipeline, when a medium flows, the differential pressure between each positive pressure channel and the negative pressure channel has a certain proportion due to the fact that the central flow velocity of the pipeline is different from the edge flow velocity of the pipeline, when scaling in the pipeline is the reduction of the inner diameter of the pipeline, the proportion of the sensor inserted into the pipeline changes, the differential pressure between each positive pressure channel and the negative pressure channel has a certain proportion to change, and the integrator calculates scaling of the pipeline by recording the relation between the proportional relation of the differential pressure and the scaling condition of. Thereby calculating the flow area of the medium and automatically correcting.
Claims (1)
1. The utility model provides a pressure head is got to pitot bar flow sensor, the pressure head body (1) is got to the cylindricality has, the upper portion of getting the pressure head body is formed with the cylindricality that the diameter reduces and connects (2), get and set up in the pressure head body and be located full pressure passageway (3) and static pressure passageway (4) of getting pressure head body axis (100) relative both sides, the axis of full pressure passageway and static pressure passageway all parallels with the axis of getting the pressure head body, full pressure passageway and static pressure passageway have and are located full pressure passway (5) and static pressure passway (6) that the cylindricality connects the upper end, its characterized in that: the pressure tapping head comprises a pressure tapping head body, and is characterized in that a plurality of full-pressure channels (3) and static-pressure channels (4) are arranged on two opposite sides of the axis (100) of the pressure tapping head body at intervals, channel walls (7) are arranged between every two adjacent full-pressure channels and static-pressure channels, full-pressure channel walls (31) are arranged between every two adjacent full-pressure channels, and static-pressure channel walls (41) are arranged between every two adjacent static-pressure channels; one side of the pressure taking head body axis (100) is provided with a plurality of full-pressure inclined planes (8) which are parallel to each other from top to bottom, the full-pressure inclined planes are respectively intersected with the full-pressure channel (3) to form a plurality of full-pressure holes (32), a full-pressure channel wall plane (33) which is vertical to a plane determined by the axis of the full-pressure channel is formed on a full-pressure channel wall (31) between every two adjacent full-pressure holes (32), the other side, opposite to the pressure taking head body axis (100), is provided with a plurality of static pressure inclined planes (9) which are parallel to each other from top to bottom, the static pressure inclined planes are respectively intersected with the static pressure channel (4) to form a plurality of static pressure holes (42), and a static pressure channel wall plane (43) which is vertical to the plane determined by the axis of the static pressure channel is formed on a static pressure channel wall (41) between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911110272.6A CN110686736A (en) | 2019-11-14 | 2019-11-14 | Pressure taking head of Pitotbar flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911110272.6A CN110686736A (en) | 2019-11-14 | 2019-11-14 | Pressure taking head of Pitotbar flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110686736A true CN110686736A (en) | 2020-01-14 |
Family
ID=69116627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911110272.6A Pending CN110686736A (en) | 2019-11-14 | 2019-11-14 | Pressure taking head of Pitotbar flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686736A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551218A (en) * | 2020-05-18 | 2020-08-18 | 重庆市科学技术研究院 | Pitot tube flow measuring instrument |
| CN111551219A (en) * | 2020-05-18 | 2020-08-18 | 重庆市科学技术研究院 | Pitot tube structure |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0947809A2 (en) * | 1998-04-02 | 1999-10-06 | Mostardi-Platt | Method and apparatus for measuring gas velocity or other flow characteristic |
| CN2562169Y (en) * | 2002-08-22 | 2003-07-23 | 武汉钢铁(集团)公司 | Multi-point bound pitot tube measuring device |
| CN2651716Y (en) * | 2003-09-23 | 2004-10-27 | 财团法人工业技术研究院 | Sleeving average dynamic pressure measuring apparatus |
| CN1595071A (en) * | 2004-06-30 | 2005-03-16 | 上海理工大学 | Detachable combined dynamic pressure for flow and pressure measurement |
| WO2014143403A1 (en) * | 2013-03-14 | 2014-09-18 | Dieterich Standard, Inc. | Pitot tube traverse assembly |
| CN104457865A (en) * | 2014-12-18 | 2015-03-25 | 辽宁毕托巴科技有限公司 | High-precision pressure measuring head of Pitobar flow sensor |
| CN105181038A (en) * | 2015-04-24 | 2015-12-23 | 武金玉 | Throttling device and throttling flowmeter |
| CN208505389U (en) * | 2018-08-03 | 2019-02-15 | 国药奇贝德(上海)工程技术有限公司 | A kind of Pitot tube |
| CN109341790A (en) * | 2018-12-13 | 2019-02-15 | 上海权宥环保科技有限公司 | A kind of bi toba flow sensor measuring not full packages water |
| CN210400484U (en) * | 2019-11-14 | 2020-04-24 | 上海权宥环保科技有限公司 | Pressure taking head of Pitotbar flow sensor |
-
2019
- 2019-11-14 CN CN201911110272.6A patent/CN110686736A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0947809A2 (en) * | 1998-04-02 | 1999-10-06 | Mostardi-Platt | Method and apparatus for measuring gas velocity or other flow characteristic |
| US6189390B1 (en) * | 1998-04-02 | 2001-02-20 | Compliance Instrument, Inc. | Method and apparatus for measuring gas velocity or other flow characteristic |
| CN2562169Y (en) * | 2002-08-22 | 2003-07-23 | 武汉钢铁(集团)公司 | Multi-point bound pitot tube measuring device |
| CN2651716Y (en) * | 2003-09-23 | 2004-10-27 | 财团法人工业技术研究院 | Sleeving average dynamic pressure measuring apparatus |
| CN1595071A (en) * | 2004-06-30 | 2005-03-16 | 上海理工大学 | Detachable combined dynamic pressure for flow and pressure measurement |
| WO2014143403A1 (en) * | 2013-03-14 | 2014-09-18 | Dieterich Standard, Inc. | Pitot tube traverse assembly |
| CN104457865A (en) * | 2014-12-18 | 2015-03-25 | 辽宁毕托巴科技有限公司 | High-precision pressure measuring head of Pitobar flow sensor |
| CN105181038A (en) * | 2015-04-24 | 2015-12-23 | 武金玉 | Throttling device and throttling flowmeter |
| CN208505389U (en) * | 2018-08-03 | 2019-02-15 | 国药奇贝德(上海)工程技术有限公司 | A kind of Pitot tube |
| CN109341790A (en) * | 2018-12-13 | 2019-02-15 | 上海权宥环保科技有限公司 | A kind of bi toba flow sensor measuring not full packages water |
| CN210400484U (en) * | 2019-11-14 | 2020-04-24 | 上海权宥环保科技有限公司 | Pressure taking head of Pitotbar flow sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551218A (en) * | 2020-05-18 | 2020-08-18 | 重庆市科学技术研究院 | Pitot tube flow measuring instrument |
| CN111551219A (en) * | 2020-05-18 | 2020-08-18 | 重庆市科学技术研究院 | Pitot tube structure |
| CN111551218B (en) * | 2020-05-18 | 2021-11-09 | 重庆市科学技术研究院 | Pitot tube flow measuring instrument |
| CN111551219B (en) * | 2020-05-18 | 2021-11-09 | 重庆市科学技术研究院 | Pitot tube structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110686736A (en) | Pressure taking head of Pitotbar flow sensor | |
| CN210400484U (en) | Pressure taking head of Pitotbar flow sensor | |
| CN104165664B (en) | Pitot bar integrated mass flow meter | |
| CN201034644Y (en) | Annular pressure sampling type V awl flow rate sensor | |
| CN110631648A (en) | Sensor combined Pitotbar flowmeter | |
| CN203364888U (en) | Differential pressure type flow sensor and flowmeter | |
| CN110672166A (en) | Multi-point measurement Pitotbar flowmeter | |
| CN210400479U (en) | Sensor combined Pitotbar flowmeter | |
| CN204007745U (en) | Pitot bar integrated mass flow meter | |
| CN210400480U (en) | Multi-point measurement Pitotbar flowmeter | |
| CN109540229B (en) | Phase change flow saturated steam flowmeter | |
| CN205002806U (en) | Two flanges are got and are pressed balanced type flowmeter | |
| CN210400478U (en) | Multi-point measurement Pitotbar flow sensor | |
| CN210400481U (en) | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter | |
| CN104457865A (en) | High-precision pressure measuring head of Pitobar flow sensor | |
| CN210533449U (en) | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter | |
| CN109341790B (en) | Pitotbar flow sensor for measuring water not full of pipe | |
| CN209878032U (en) | Flowmeter for multi-point measurement of large-diameter pipeline | |
| EP3132233B1 (en) | Flow meter | |
| CN111504399A (en) | Ultrasonic V-cone flowmeter | |
| KR102181980B1 (en) | Multi-Pitot Average Differential Pressure Measurement Sensor and Differential Pressure Measurement Method Using thereof | |
| CN110672165A (en) | Multi-point measurement Pitotbar flow sensor | |
| CN112903039A (en) | Pressure taking head of rectifier type flow sensor | |
| CN111551218B (en) | Pitot tube flow measuring instrument | |
| CN216410343U (en) | Plug-in flowmeter with online calibration function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210118 Address after: 112600 No. 265, Ling Dong Street, Tieling Economic Development Zone, Tieling, Liaoning Applicant after: Liaoning pitotbar Polytron Technologies Inc. Address before: 201600 building 24, 506 South Ring Road, Songjiang District, Shanghai Applicant before: SHANGHAI QUANYOU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |