CN204043727U - A kind of pitot tube block-proof type flow sensor - Google Patents
A kind of pitot tube block-proof type flow sensor Download PDFInfo
- Publication number
- CN204043727U CN204043727U CN201420535533.5U CN201420535533U CN204043727U CN 204043727 U CN204043727 U CN 204043727U CN 201420535533 U CN201420535533 U CN 201420535533U CN 204043727 U CN204043727 U CN 204043727U
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- flow
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Abstract
The utility model discloses a kind of pitot tube block-proof type flow sensor, comprise cylindricality connecting pipe and be arranged on the pressure head be connected below cylindricality connecting pipe and with cylindricality connecting pipe, described cylindricality connecting pipe has cylindricality outside protective pipe, pressure head is the isometrical right cylinder of external diameter and described cylindricality outside protective pipe external diameter, total head passage and static pressure passage is provided with in pressure head, the bottom of pressure head is provided with and the total head flow-guiding channel of total head passage and static pressure channel connection and static pressure flow-guiding channel, total head passage, static pressure passage, pressure head, the axis of total head flow-guiding channel and static pressure flow-guiding channel at grade, the axis of total head flow-guiding channel and static pressure flow-guiding channel on the same line and with the axis perpendicular of pressure head, when described pressure head and described cylindricality connecting pipe are assembled into one, described total head passage is connected with static tube with described ram-air pipe respectively with static pressure passage.During use the utility model measuring channel inner fluid flow, fluid can not produce sinuous flow phenomenon, can measure the flow of fluids within pipes exactly.
Description
Technical field
The utility model relates to a kind of pitot tube block-proof type flow sensor.
Background technology
Pitot tube block-proof type differential pressure flow transducer is the flow sensor of the pitot tube principle design according to French scientist H.Pitot invention, and sensor is the pressure element of pitot tube principle.
Pitot tube block-proof type flow sensor of the prior art, structure mainly comprise cylindricality connecting pipe and be arranged on the pressure head be connected below cylindricality connecting pipe and with cylindricality connecting pipe, described cylindricality connecting pipe has cylindricality outside protective pipe and the ram-air pipe be placed in cylindricality outside protective pipe and static tube, the top being positioned at cylindricality connecting pipe has the total head interface and static pressure interface that are communicated with respectively with described ram-air pipe and static tube, in order to improve the anti-blocking performance of pitot tube block-proof type flow sensor, the many employings of pitot tube block-proof type flow sensor are from ram-air pipe and static tube upper end to the cylindrical fashion of pressure head lower end up/down perforation, and pressure head adopts total head pressure pipe and the static pressure pressure pipe of two tubulars more, but the pressure header structure of above-mentioned pitot tube block-proof type flow sensor of the prior art is actually and defines external form that cross section is numeral 8 or two mutually very near circles, after the total head pressure tappings of the fluid flows through sensor in pipeline, before arriving static pressure tapping, because of sensors sides be the surface of rough digital 8 types or the section of having open surperficial time, steady fluid in pipeline can be made, flow field changes when flowing through the uneven surface of sensor pressure head, easy generation sinuous flow and then affect static pressure end and accurately extract static pressure, error will be produced like this when measuring channel inner fluid flow, cause the flow of measuring channel inner fluid not accurate enough.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of pitot tube block-proof type flow sensor, uses the utility model accurately can extract the static pressure of fluids within pipes, and then can accurately measure the flow of fluids within pipes.
For solving the problems of the technologies described above, the utility model pitot tube block-proof type flow sensor, comprise cylindricality connecting pipe and be arranged on the pressure head be connected below cylindricality connecting pipe and with cylindricality connecting pipe, described cylindricality connecting pipe has cylindricality outside protective pipe and the ram-air pipe be placed in cylindricality outside protective pipe and static tube, the top being positioned at cylindricality connecting pipe has the total head interface and static pressure interface that are communicated with respectively with described ram-air pipe and static tube, described pressure head is the isometrical right cylinder of external diameter and described cylindricality outside protective pipe external diameter, the total head passage and static pressure passage that match with described ram-air pipe and static tube is provided with in pressure head, the bottom of described pressure head is provided with and the total head flow-guiding channel of total head passage and static pressure channel connection and static pressure flow-guiding channel, described total head passage, static pressure passage, pressure head, the axis of total head flow-guiding channel and static pressure flow-guiding channel at grade, the axis of total head flow-guiding channel and static pressure flow-guiding channel on the same line and with the axis perpendicular of pressure head, when described pressure head and described cylindricality connecting pipe are assembled into one, described total head passage is connected with static tube with described ram-air pipe respectively with static pressure passage.
Adopt the pitot tube block-proof type flow sensor of said structure, still the cylindrical fashion of up/down perforation is have employed on the whole to pressure head lower end from ram-air pipe and static tube upper end, the utility model is made still to possess anti-blocking performance, because described pressure head is the isometrical right cylinder of external diameter and described cylindricality outside protective pipe external diameter, the total head passage and static pressure passage that match with described ram-air pipe and static tube is provided with in pressure head, the bottom of described pressure head is provided with and the total head flow-guiding channel of total head passage and static pressure channel connection and static pressure flow-guiding channel, described total head passage, static pressure passage, pressure head, the axis of total head flow-guiding channel and static pressure flow-guiding channel at grade, the axis of total head flow-guiding channel and static pressure flow-guiding channel on the same line and with the axis perpendicular of pressure head, when described pressure head and described cylindricality connecting pipe are assembled into one, described total head passage is connected with static tube with described ram-air pipe respectively with static pressure passage, after adopting said structure, be actually and original two total head pressure pipes and static pressure pressure pipe are integrated into the cylindrical tube being provided with total head passage and static pressure passage in, such structure just avoids the fluid change that flow field produces when flowing through sensor pressure head, namely sinuous flow phenomenon can not be produced, the static pressure numerical value of fluid can be extracted so exactly, and then the flow of fluids within pipes can be calculated exactly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is that the master of a kind of pitot tube block-proof type of the utility model flow sensor cuts open structural representation depending on office.
Fig. 2 is the structure for amplifying schematic diagram of the pressure head in the pitot tube block-proof type flow sensor shown in Fig. 1.
Fig. 3 is the A-A line sectional structure schematic diagram along Fig. 2.
Embodiment
See Fig. 1-Fig. 3, a kind of pitot tube block-proof type of the utility model flow sensor, comprise cylindricality connecting pipe 10 and be arranged on the pressure that is connected below cylindricality connecting pipe 10 and with cylindricality connecting pipe 10 20, described cylindricality connecting pipe 10 has cylindricality outside protective pipe 11 and the ram-air pipe 12 be placed in cylindricality outside protective pipe 11 and static tube 13, the top being positioned at cylindricality connecting pipe 10 has the total head interface 14 and static pressure interface 15 that are communicated with respectively with described ram-air pipe 12 and static tube 13, described pressure 20 is the isometrical right cylinder of external diameter and described cylindricality outside protective pipe 11 external diameter, the total head passage 22 and static pressure passage 23 that match with described ram-air pipe 12 and static tube 13 is provided with in pressure 20, the bottom of described pressure 20 is provided with the total head flow-guiding channel 24 and static pressure flow-guiding channel 25 that are communicated with static pressure passage 23 with total head passage 22, described total head passage 22, static pressure passage 23, pressure 20, the axis of total head flow-guiding channel 24 and static pressure flow-guiding channel 25 at grade, the axis of total head flow-guiding channel 24 and static pressure flow-guiding channel 25 on the same line and with the axis perpendicular of pressure 20, when described pressure 20 and described cylindricality connecting pipe 10 are assembled into one, described total head passage 22 is connected with static tube 13 with described ram-air pipe 12 respectively with static pressure passage 23.
Claims (1)
1. a pitot tube block-proof type flow sensor, comprise cylindricality connecting pipe (10) and be arranged on cylindricality connecting pipe (10) below and the pressure head (20) be connected with cylindricality connecting pipe (10), described cylindricality connecting pipe (10) has cylindricality outside protective pipe (11) and the ram-air pipe (12) that is placed in cylindricality outside protective pipe (11) and static tube (13), the top being positioned at cylindricality connecting pipe (10) has the total head interface (14) and static pressure interface (15) that are communicated with respectively with described ram-air pipe (12) and static tube (13), it is characterized in that: described pressure head (20) is external diameter and the isometrical right cylinder of described cylindricality outside protective pipe (11) external diameter, the total head passage (22) and static pressure passage (23) that match with described ram-air pipe (12) and static tube (13) is provided with in pressure head (20), the bottom of described pressure head (20) is provided with the total head flow-guiding channel (24) and static pressure flow-guiding channel (25) that are communicated with static pressure passage (23) with total head passage (22), described total head passage (22), static pressure passage (23), pressure head (20), the axis of total head flow-guiding channel (24) and static pressure flow-guiding channel (25) at grade, the axis of total head flow-guiding channel (24) and static pressure flow-guiding channel (25) on the same line and with the axis perpendicular of pressure head (20), when described pressure head (20) and described cylindricality connecting pipe (10) are assembled into one, described total head passage (22) is connected with static tube (13) with described ram-air pipe (12) respectively with static pressure passage (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420535533.5U CN204043727U (en) | 2014-09-18 | 2014-09-18 | A kind of pitot tube block-proof type flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420535533.5U CN204043727U (en) | 2014-09-18 | 2014-09-18 | A kind of pitot tube block-proof type flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204043727U true CN204043727U (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420535533.5U Expired - Fee Related CN204043727U (en) | 2014-09-18 | 2014-09-18 | A kind of pitot tube block-proof type flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204043727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540229A (en) * | 2018-12-13 | 2019-03-29 | 上海权宥环保科技有限公司 | Phase unsteady flow saturated steam flowing meter |
-
2014
- 2014-09-18 CN CN201420535533.5U patent/CN204043727U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540229A (en) * | 2018-12-13 | 2019-03-29 | 上海权宥环保科技有限公司 | Phase unsteady flow saturated steam flowing meter |
| CN109540229B (en) * | 2018-12-13 | 2020-04-03 | 上海权宥环保科技有限公司 | Phase change flow saturated steam flowmeter |
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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 |
Granted publication date: 20141224 Termination date: 20160918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |