CN109540229B - Phase change flow saturated steam flowmeter - Google Patents
Phase change flow saturated steam flowmeter Download PDFInfo
- Publication number
- CN109540229B CN109540229B CN201811522428.7A CN201811522428A CN109540229B CN 109540229 B CN109540229 B CN 109540229B CN 201811522428 A CN201811522428 A CN 201811522428A CN 109540229 B CN109540229 B CN 109540229B
- Authority
- CN
- China
- Prior art keywords
- pressure
- full
- static
- water storage
- hole
- 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.)
- Active
Links
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 25
- 230000003068 static effect Effects 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 abstract description 8
- 230000005514 two-phase flow Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002545 silicone oil Polymers 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
- G01F1/37—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 the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a phase-change flow saturated steam flowmeter, which comprises a horizontal short circular pipe, a Pitotbar flow sensor inserted into the horizontal short circular pipe from the top wall of the horizontal short circular pipe, a liquid level measuring device arranged on the horizontal short circular pipe and used for measuring the liquid level in the horizontal short circular pipe, and a first differential pressure transmitter connected with the Pitotbar flow sensor; the Pitot-bar flow sensor comprises a pressure taking head and a full-static pressure guide pipe and a static pressure guide pipe which are connected, wherein the left side surface and the right side surface which are opposite to the lower section of the pressure taking head are provided with a full static pressure hole and a static pressure hole, a full static pressure channel and a static pressure channel are arranged in the pressure taking head, the left side surface and the right side surface of the pressure taking head are provided with a full static pressure balancing hole and a static pressure balancing hole, and the full static; the static pressure water storage device also comprises a full static pressure water storage hole and a static pressure water storage hole which extend downwards from the top of the pressure tapping head to the positions below the full static pressure balancing hole and the static pressure balancing hole, and a full static pressure guiding pipe and a static pressure guiding pipe respectively extend into the full static pressure water storage hole and the static pressure water storage hole. The invention can accurately measure the flow of saturated steam in the pipeline.
Description
Technical Field
The invention relates to a Pitotbar flowmeter, in particular to a phase-change flow saturated steam flowmeter.
Background
In the prior art, Chinese patent publication CN 203011438U discloses a gas-liquid two-phase flow Pitotbar flowmeter, the structure of the device comprises a horizontal short round tube and a Pitotbar flow sensor, wherein a round hole is formed on the bottom wall of the horizontal short round tube, the Pitotbar flow sensor extends into the short round pipe from the round hole, the Pitotbar flow sensor is connected with a first differential pressure transmitter, and the Pitotbar flow sensor also comprises a liquid level measuring device for measuring the liquid level in the horizontal short round pipe, the liquid level measuring device is provided with a liquid flow pressure guide pipe and an air flow pressure guide pipe, one end of the liquid flow pressure guide pipe and one end of the air flow pressure guide pipe are connected with a second differential pressure transmitter, the top wall of the horizontal short circular tube is provided with an airflow hole, the bottom wall of the horizontal short circular tube is provided with a liquid flow hole, the other end of the liquid flow pressure guide pipe is communicated with the liquid flow hole, and the other end of the air flow pressure guide pipe is communicated with the air flow hole.
The pitot flow sensor used in the prior art is a conventional universal pitot flow sensor, the structure of the pitot flow sensor mainly comprises a pressure taking head and a pressure guide pipe connected with the pressure taking head, the pressure guide pipe comprises a full-pressure guide pipe and a static pressure guide pipe, the top ends of the full-pressure guide pipe and the static pressure guide pipe are connected with a transmitter connector, the upper section of the pressure taking head is a cylindrical connector, the left side surface and the right side surface opposite to the lower section of the pressure taking head are symmetrically provided with a full-pressure hole and a static pressure hole, the pressure taking head is internally provided with a full-pressure channel and a static pressure channel communicated with the full-pressure hole and the static pressure hole, the axes of the full-pressure channel and the static pressure channel are parallel to the axis of the pressure taking head and are positioned in the same plane, and the cylindrical connector on the upper section.
According to the gas-liquid two-phase flow Pitot-bar flowmeter in the prior art, due to the fact that the liquid level measuring device in the pipeline is additionally arranged, the second differential pressure transmitter obtains the pressure difference between the upper surface of the liquid level of the horizontal short circular pipe and the lowest point of the liquid level of the horizontal short circular pipe according to pressure signals transmitted by the liquid flow pressure guiding pipe and the air flow pressure guiding pipe, the actual height of the liquid level of the horizontal short circular pipe can be calculated, and then the flow of liquid in the horizontal short circular pipe can be accurately measured according to the flow rate of the liquid obtained by the Pitot-bar flow sensor and the.
The gas-liquid two-phase flow Pitotbar flow meter in the prior art measures the liquid flow of the liquid in the pipe which is not full of gas mixed in the pipe. For a pipeline for conveying saturated steam, saturated steam and a small amount of saturated liquid exist in the pipeline, when the flow of the saturated steam in the pipeline is measured, a pressure taking head of the Pitotbar flow sensor is placed in the saturated steam, and since the saturated steam has certain pressure, silicon oil in a full static pressure guide pipe and a static pressure guide pipe in the Pitotbar flow sensor partially overflows and drips, so that transmitted full static pressure signals and static pressure signals generate errors, and the measurement accuracy of the flow of the saturated steam is finally influenced.
Disclosure of Invention
The invention aims to provide a phase-change flow saturated steam flow meter capable of accurately measuring the flow of saturated steam in a pipeline for conveying the saturated steam.
In order to solve the technical problem, the phase change flow saturated steam flowmeter comprises a horizontal short circular pipe, a Pitotbar flow sensor inserted into the horizontal short circular pipe from the top wall of the horizontal short circular pipe, a first differential pressure transmitter connected with the Pitotbar flow sensor, and a liquid level measuring device arranged on the horizontal short circular pipe and used for measuring the liquid level in the horizontal short circular pipe; the Pitot flow sensor comprises a pressure taking head and a pressure guide pipe connected with the pressure taking head, the pressure guide pipe comprises a full-pressure guide pipe and a static pressure guide pipe, the top ends of the full-pressure guide pipe and the static pressure guide pipe are connected with a transmitter connector, the transmitter connector is provided with a transmitter full-pressure interface and a transmitter negative pressure interface, the Pitot flow sensor is connected with the first differential pressure transmitter through the transmitter full-pressure interface and the transmitter negative pressure interface on the transmitter connector, the upper section of the pressure taking head is a cylindrical connector, the left side surface and the right side surface opposite to the lower section of the pressure taking head are provided with symmetrical left and right inclined surfaces, full-pressure holes and static pressure holes are symmetrically arranged on the left and right inclined surfaces, a full-pressure channel and a static pressure channel communicated with the full-pressure holes and the static pressure holes are arranged in the pressure taking head, the axes of the full-pressure channel and the static pressure channel are parallel to the axis of the pressure taking head and, the left side surface and the right side surface of the pressure taking head are symmetrically provided with a full-pressure balance hole and a static-pressure balance hole which have axes in the same straight line and are vertical to the axes of the pressure taking head, and the full-pressure balance hole and the static-pressure balance hole are respectively communicated with the tops of the full-pressure channel and the static-pressure channel; the full-pressure water storage hole and the static-pressure water storage hole are respectively arranged at the front side and the rear side of the axis of the pressure taking head, the axes of the full-pressure water storage hole and the static-pressure water storage hole are parallel to the axis of the pressure taking head and are positioned in the same plane, the tops of the full-pressure channel and the static-pressure channel are respectively communicated with the full-pressure water storage hole and the static-pressure water storage hole through the full-pressure flow guide channel and the static-pressure flow guide channel, the axes of the full-pressure flow guide channel and the static-pressure flow guide channel are parallel to each other and are positioned in the same plane as the axes of the full-pressure balance hole and the static-pressure balance hole, the full-pressure pipe and the static-pressure pipe respectively extend into the full-pressure water storage hole and the static-pressure water storage hole, and the bottoms of the full-pressure pipe and the static-pressure pipe extend to the positions below the full-pressure, gaps are reserved between the bottoms of the full-pressure guide pipe and the static pressure guide pipe and the bottoms of the full-pressure water storage hole and the static pressure water storage hole; short pipes are welded at the openings at the upper ends of the full-pressure water storage hole and the static-pressure water storage hole respectively, and the full-pressure pipe and the static-pressure pipe respectively penetrate through the short pipes at the openings at the upper ends of the full-pressure water storage hole and the static-pressure water storage hole in a sealing mode and extend into the full-pressure water storage hole and the static-pressure water storage hole.
When the device is used, the horizontal short round pipe is required to be connected with a pipeline to be measured. The phase change flow saturated steam flowmeter can measure the actual height of the liquid level of the horizontal short round pipe according to the liquid level measuring device in the pipeline, further can obtain the actual height of the saturated steam in the horizontal short round pipe, and can measure the flow of the saturated steam in the horizontal short round pipe according to the flow velocity of the saturated steam obtained by the Pitotbar flow sensor and the first differential pressure transmitter. When the Pitot-bar flow sensor is used, high-temperature-resistant liquid is firstly injected into the full-pressure water storage hole and the static-pressure water storage hole, the height of the injected liquid is consistent with that of the full-pressure balance hole and the static-pressure balance hole, the full-pressure guide pipe and the static-pressure guide pipe respectively extend into the full-pressure water storage hole and the static-pressure water storage hole, and the bottoms of the full-pressure guide pipe and the static-pressure guide pipe extend to the lower parts of the full-pressure balance hole and the static-pressure balance hole, so that saturated steam in a pipeline cannot directly contact with the bottoms of the full-pressure guide pipe and the static-pressure guide pipe, silicone oil in the full-pressure guide pipe and the static-pressure guide pipe cannot overflow and drip, transmitted full-pressure signals and static-pressure signals are relatively accurate, the full-pressure balance hole and the full-pressure hole can transmit full-pressure signals, the static-pressure balance hole, the flow of saturated steam in the pipeline is accurately measured.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic front view of a phase change flow saturated steam flow meter according to the present invention.
Fig. 2 is a schematic sectional view taken along line a-a in fig. 1.
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1 with the structure of the first differential pressure transmitter removed.
FIG. 4 is a schematic structural view in main section of a Pitotbar flow sensor in the phase change flow saturated steam flow meter of the present invention.
Fig. 5 is a side view schematic of fig. 4.
Fig. 6 is a schematic sectional view taken along line C-C in fig. 4.
Detailed Description
Referring to fig. 1-6, and first to fig. 1-3, the phase change flow saturated steam flow meter of the present invention, comprises a horizontal short cylindrical tube 1 and a pitot flow sensor 2, the top wall of the horizontal short round pipe 1 is provided with a round hole 3, the Pitotbar flow sensor 2 extends into the short round pipe from the round hole, the Pitotbar flow sensor 2 is connected with a first differential pressure transmitter 4, the liquid level measuring device 5 is also included for measuring the liquid level in the horizontal short round pipe 1, the liquid level measuring device 5 is provided with a liquid flow pressure guide pipe 6 and an air flow pressure guide pipe 7, one end of the liquid flow pressure guide pipe 6 and one end of the air flow pressure guide pipe 7 are connected with a second differential pressure transmitter 8, the top wall of the horizontal short round tube 1 is provided with an airflow hole 9, the bottom wall of the horizontal short round tube 1 is provided with a liquid flow hole 10, the other end of the liquid flow pressure guide pipe 6 is communicated with the liquid flow hole 10, and the other end of the air flow pressure guide pipe 7 is communicated with the air flow hole 9. Referring to fig. 4-6 again, the pitot-bar flow sensor 2 includes a pressure tapping head 100 and a pressure guiding pipe 200 connected thereto, the pressure guiding pipe 200 includes a full pressure guiding pipe 210 and a static pressure guiding pipe 220, the top ends of the full pressure guiding pipe 210 and the static pressure guiding pipe 220 are connected to a transmitter connector 300, the transmitter connector 300 has a transmitter full pressure interface 310 and a transmitter negative pressure interface 320, the pitot-bar flow sensor 2 is connected to the first differential pressure transmitter 4 via the transmitter full pressure interface 310 and the transmitter negative pressure interface 320 of the transmitter connector 300, the pressure tapping head 100 has a cylindrical connector 110 at its upper section, symmetrical left and right inclined planes 120 and 130 formed at its lower section on opposite left and right side surfaces, full pressure holes 121 and static pressure holes 131 are symmetrically formed on the left and right inclined planes 120 and 130, a full pressure passage 122 and a static pressure passage 132 communicated with the full pressure holes 121 and the static pressure holes 131 are formed in the pressure tapping head 100, the axes of the full pressure passage 122 and static pressure passage 132 are parallel to and located in the same plane, the cylindrical joint 110 at the upper section of the pressure taking head 100 is provided with a mounting sleeve 140 which is sleeved outside the pressure guide pipe 200 and is connected with the bottom of the transmitter joint 300, the left side surface and the right side surface of the pressure taking head 100 are symmetrically provided with a full pressure balance hole 123 and a static pressure balance hole 133, the axes of which are in the same straight line and are vertical to the axis of the pressure taking head, and the full pressure balance hole 123 and the static pressure balance hole 133 are respectively communicated with the tops of the full pressure channel 122 and the static pressure channel 132; the pressure tapping head further comprises a full-pressure water storage hole 124 and a static-pressure water storage hole 134 which extend downwards from the top of the cylindrical joint 110 at the upper section of the pressure tapping head 100 to the positions below the full-pressure balancing hole 123 and the static-pressure balancing hole 133, the full-pressure water storage hole 124 and the static-pressure water storage hole 134 are respectively arranged at the front side and the rear side of the axis of the pressure tapping head, the axes of the full-pressure water storage hole 124 and the static-pressure water storage hole 134 are parallel to the axis of the pressure tapping head 100 and are positioned in the same plane, the tops of the full-pressure passage 122 and the static-pressure passage 132 are respectively communicated with the full-pressure water storage hole 124 and the static-pressure water storage hole 134 through the full-pressure diversion passage 125 and the static-pressure diversion passage 135, the axes of the full-pressure diversion passage 125 and the static-pressure diversion passage 135 are parallel to each other and are positioned in the same plane with the axes of the full-pressure balancing hole 123 and the static-pressure balancing hole 133, the full-pressure pipe, a gap 150 is formed between the bottoms of the full-pressure guide pipe 210 and the static pressure guide pipe 220 and the bottoms of the full-pressure water storage hole 124 and the static pressure water storage hole 134; short pipes 160 are welded at the openings at the upper ends of the full-pressure water storage hole 124 and the static pressure water storage hole 134 respectively, and the full-pressure pipe 210 and the static pressure pipe 220 respectively and hermetically penetrate through the short pipes 160 at the openings at the upper ends of the full-pressure water storage hole 124 and the static pressure water storage hole 134 and extend into the full-pressure water storage hole 124 and the static pressure water storage hole 134.
Claims (1)
1. A phase-change flow saturated steam flowmeter comprises a horizontal short circular tube (1), a Pitotbar flow sensor (2) inserted into the horizontal short circular tube from the top wall of the horizontal short circular tube, a first differential pressure transmitter (4) connected with the Pitotbar flow sensor (2), and a liquid level measuring device (5) arranged on the horizontal short circular tube and used for measuring the liquid level in the horizontal short circular tube (1); the Pitot flow sensor (2) comprises a pressure taking head (100) and a pressure guide pipe (200) connected with the pressure taking head, the pressure guide pipe (200) comprises a full-pressure guide pipe (210) and a static pressure guide pipe (220), the top ends of the full-pressure guide pipe (210) and the static pressure guide pipe (220) are connected with a transmitter connector (300), the transmitter connector (300) is provided with a transmitter full-pressure interface (310) and a transmitter negative pressure interface (320), the Pitot flow sensor (2) is connected with the first differential pressure transmitter (4) through the transmitter full-pressure interface (310) and the transmitter negative pressure interface (320) on the transmitter connector (300), the upper section of the pressure taking head (100) is a cylindrical connector (110), the left side surface and the right side surface opposite to the lower section are provided with symmetrical left and right inclined surfaces (120, 130), the left and right inclined surfaces (120, 130) are symmetrically provided with a full-pressure hole (121, get pressure head (100) in have with full pressure hole (121) and static pressure passageway (132) that static pressure hole (131) are linked together full pressure passageway (122), the axis of full pressure passageway (122) and static pressure passageway (132) is parallel with the axis of getting pressure head (100) and is located the coplanar, get the installation sleeve (140) that the cylindricality of pressure head (100) upper segment connects on (110) and establish in pressure pipe (200) outside and link to each other with transmitter joint (300) bottom, its characterized in that: the left side surface and the right side surface of the pressure taking head (100) are symmetrically provided with a full-pressure balance hole (123) and a static-pressure balance hole (133) which have axes in the same straight line and are vertical to the axes of the pressure taking head, and the full-pressure balance hole (123) and the static-pressure balance hole (133) are respectively communicated with the tops of the full-pressure channel (122) and the static-pressure channel (132); the water-saving device also comprises a full-pressure water storage hole (124) and a static-pressure water storage hole (134) which extend downwards from the top of the cylindrical joint (110) at the upper section of the pressure taking head (100) to the positions below the full-pressure balance hole (123) and the static-pressure balance hole (133), the full-pressure water storage hole (124) and the static-pressure water storage hole (134) are respectively arranged at the front side and the rear side of the axis of the pressure taking head, the axes of the full-pressure water storage hole (124) and the static-pressure water storage hole (134) are parallel to the axis of the pressure taking head (100) and are positioned in the same plane, the tops of the full-pressure channel (122) and the static-pressure channel (132) are respectively communicated with the full-pressure water storage hole (124) and the static-pressure water storage hole (134) through a full-pressure flow guide channel (125) and a static-pressure flow guide channel (135), the axes of the full-pressure flow guide channel (125) and the, the full-pressure guide pipe (210) and the static pressure guide pipe (220) extend into the full-pressure water storage hole (124) and the static pressure water storage hole (134) respectively, the bottoms of the full-pressure guide pipe (210) and the static pressure guide pipe (220) extend to the lower parts of the full-pressure balance hole (123) and the static pressure balance hole (133), and a gap (150) is formed between the bottoms of the full-pressure guide pipe (210) and the static pressure guide pipe (220) and the bottoms of the full-pressure water storage hole (124) and the static pressure water storage hole (134); short pipes (160) are welded at orifices at the upper ends of the full-pressure water storage hole (124) and the static pressure water storage hole (134), the full-pressure pipe (210) and the static pressure pipe (220) respectively penetrate through the short pipes (160) at the orifices at the upper ends of the full-pressure water storage hole (124) and the static pressure water storage hole (134) in a sealing mode and extend into the full-pressure water storage hole (124) and the static pressure water storage hole (134), high-temperature-resistant liquid is injected into the full-pressure water storage hole (124) and the static pressure water storage hole (134), and the height of the injected liquid is consistent with the height of the full-pressure balance hole (123) and the height of the static pressure balance hole (133).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522428.7A CN109540229B (en) | 2018-12-13 | 2018-12-13 | Phase change flow saturated steam flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522428.7A CN109540229B (en) | 2018-12-13 | 2018-12-13 | Phase change flow saturated steam flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109540229A CN109540229A (en) | 2019-03-29 |
| CN109540229B true CN109540229B (en) | 2020-04-03 |
Family
ID=65854712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811522428.7A Active CN109540229B (en) | 2018-12-13 | 2018-12-13 | Phase change flow saturated steam flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109540229B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672166A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flowmeter |
| CN112302597A (en) * | 2020-11-04 | 2021-02-02 | 海南毕托巴科技研究院有限公司 | Wet steam metering device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5481925A (en) * | 1994-09-09 | 1996-01-09 | Environmental Technologies, Inc. | Low turbulence airflow sensor |
| CN104101390A (en) * | 2014-08-07 | 2014-10-15 | 辽宁毕托巴科技有限公司 | Flow measuring device for measuring sewage in non-full pipe |
| CN204043727U (en) * | 2014-09-18 | 2014-12-24 | 铁岭云开科技有限公司 | A kind of pitot tube block-proof type flow sensor |
| CN204301915U (en) * | 2014-11-26 | 2015-04-29 | 扬州江天流量仪表有限公司 | With the T-shaped pressure drag differential pressure pick-up of steam vent |
| CN204439142U (en) * | 2015-03-18 | 2015-07-01 | 内蒙古天庆工程机械设备有限公司 | Low flow velocity, high precision pitot tube differential pressure flow sensor pressure head |
-
2018
- 2018-12-13 CN CN201811522428.7A patent/CN109540229B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5481925A (en) * | 1994-09-09 | 1996-01-09 | Environmental Technologies, Inc. | Low turbulence airflow sensor |
| CN104101390A (en) * | 2014-08-07 | 2014-10-15 | 辽宁毕托巴科技有限公司 | Flow measuring device for measuring sewage in non-full pipe |
| CN204043727U (en) * | 2014-09-18 | 2014-12-24 | 铁岭云开科技有限公司 | A kind of pitot tube block-proof type flow sensor |
| CN204301915U (en) * | 2014-11-26 | 2015-04-29 | 扬州江天流量仪表有限公司 | With the T-shaped pressure drag differential pressure pick-up of steam vent |
| CN204439142U (en) * | 2015-03-18 | 2015-07-01 | 内蒙古天庆工程机械设备有限公司 | Low flow velocity, high precision pitot tube differential pressure flow sensor pressure head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109540229A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101382445B (en) | Double differential pressure throttle moisture measuring device | |
| CN109540229B (en) | Phase change flow saturated steam flowmeter | |
| EP3132233B1 (en) | Flow meter | |
| US11573107B2 (en) | Hydraulic system for ultrasonic flow measurement using direct acoustic path approach | |
| CN104165664B (en) | Pitot bar integrated mass flow meter | |
| CN109341790B (en) | Pitotbar flow sensor for measuring water not full of pipe | |
| CN201034644Y (en) | Annular pressure sampling type V awl flow rate sensor | |
| CN110672166A (en) | Multi-point measurement Pitotbar flowmeter | |
| CN110686736A (en) | Pressure taking head of Pitotbar flow sensor | |
| US2564272A (en) | Flow meter attachment for hose nozzles | |
| KR101789543B1 (en) | Average pitot tube type flow meter | |
| CN210400484U (en) | Pressure taking head of Pitotbar flow sensor | |
| CN105387894A (en) | Bitobar flowmeter | |
| CN210400479U (en) | Sensor combined Pitotbar flowmeter | |
| CN106153003B (en) | Constant liquid level reference device and method for static force leveling system | |
| CN203011438U (en) | Gas-liquid two-phase flow pitotbar flow meter | |
| CN210400478U (en) | Multi-point measurement Pitotbar flow sensor | |
| CN209247080U (en) | The throttling set of built-in high-precision sensor | |
| CN111504399A (en) | Ultrasonic V-cone flowmeter | |
| CN203132949U (en) | On-line densimeter | |
| CN111551218B (en) | Pitot tube flow measuring instrument | |
| CN208187379U (en) | A kind of coating artesian aquifer buried depth measuring device | |
| CN102095460A (en) | Low-velocity wide-range gas mass flowmeter | |
| CN111551219B (en) | Pitot tube structure | |
| CN219869825U (en) | Anti-blocking pressure taking head of flow sensor with high stability and wide range |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210108 Address after: 112600 No. 265, Ling Dong Street, Tieling Economic Development Zone, Tieling, Liaoning Patentee after: Liaoning pitotbar Polytron Technologies Inc. Address before: 201500 room 3356, 65 lane, 65 Ring Road, Fengjing town, Jinshan District, Shanghai. Patentee before: SHANGHAI QUANYOU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: No. 265 Lingdong Street, Tieling Economic Development Zone, Tieling City, Liaoning Province, 112366 Patentee after: Liaoning Bitobar Technology Co.,Ltd. Address before: 112600 No. 265, Ling Dong Street, Tieling Economic Development Zone, Tieling, Liaoning Patentee before: Liaoning pitotbar Polytron Technologies Inc. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Phase change flow saturated steam flowmeter Effective date of registration: 20231228 Granted publication date: 20200403 Pledgee: Tieling Branch of Shengjing Bank Co.,Ltd. Pledgor: Liaoning Bitobar Technology Co.,Ltd. Registration number: Y2023210000358 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |