CN112858096A - Differential pressure type densimeter measuring and protecting device - Google Patents
Differential pressure type densimeter measuring and protecting device Download PDFInfo
- Publication number
- CN112858096A CN112858096A CN202110128597.8A CN202110128597A CN112858096A CN 112858096 A CN112858096 A CN 112858096A CN 202110128597 A CN202110128597 A CN 202110128597A CN 112858096 A CN112858096 A CN 112858096A
- Authority
- CN
- China
- Prior art keywords
- pressure
- differential pressure
- diaphragm
- pipe
- diaphragm capsule
- 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
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 239000002775 capsule Substances 0.000 claims description 44
- 230000005540 biological transmission Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 19
- 230000002528 anti-freeze Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 abstract description 4
- 238000004220 aggregation Methods 0.000 abstract description 4
- 229920002545 silicone oil Polymers 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a differential pressure type densimeter measuring and protecting device, and belongs to the technical field of densimeter measuring and protecting devices. The pressure sensor comprises a main medium pipe, a bypass medium pipe fixed on the side face of the main medium pipe, diaphragm boxes distributed on the upper portion and the lower portion of the bypass medium pipe, low-pressure sensors and high-pressure sensors which correspond to the sensor sides of the two diaphragm boxes respectively, pressure guide pipes which correspond to the two pressure sensors respectively, protective sleeves arranged on the two pressure guide pipes, and the protective sleeves connected with a differential pressure transmitter. The bypass medium pipe effectively controls the flow velocity and stably measures. The pressure sensors are protected by the diaphragm boxes, and the medium cannot directly scour the diaphragms of the pressure sensors when flowing through the measuring chamber, but is isolated by the diaphragm boxes and transmits pressure signals to the pressure sensors, so that the service life of products is ensured, and measurement errors caused by aggregation of granular media or bubbles are prevented.
Description
Technical Field
The invention relates to a differential pressure type densimeter measuring and protecting device, and belongs to the technical field of densimeter measuring and protecting devices.
Background
The flow velocity of medium material loading pipe is generally all relatively fast, and the flow velocity is fast, can cause big measuring error and measuring unstability, even can not measure. Therefore, the flow rate needs to be controlled well to stabilize the measurement. The flow rate is controlled by a differential pressure densitometer, taking into account the bypass installation. When the differential pressure densimeter is used, if an effective protection device is not installed, the diaphragm of the pressure sensor is washed, corroded and blocked by a medium for a long time, so that the measurement accuracy is reduced, and even the diaphragm is damaged, and the purpose of measurement cannot be achieved.
Disclosure of Invention
The invention aims to provide a measuring and protecting device of a differential pressure type densimeter, which is used for protecting a pressure sensor diaphragm.
In order to achieve the purpose, the invention adopts the technical scheme that:
a measuring and protecting device of a differential pressure densimeter comprises a main medium pipe vertically arranged on a medium feeding pipe, a bypass medium pipe fixed on the side face of the main medium pipe, a first diaphragm capsule and a second diaphragm capsule which are vertically distributed on the bypass medium pipe, a low-pressure sensor and a high-pressure sensor which are respectively arranged on the sensor sides of the first diaphragm capsule and the second diaphragm capsule correspondingly, a low-pressure guide pipe connected with the low-pressure sensor, a high-pressure guide pipe connected with the high-pressure sensor, a protecting sleeve arranged outside the low-pressure guide pipe and the high-pressure guide pipe, and a differential pressure transmitter fixedly connected with the protecting sleeve, wherein the low-pressure guide pipe and the high-pressure guide pipe are both connected with the;
the diaphragm of the low-pressure sensor is arranged in the first diaphragm box, and the diaphragm of the high-pressure guide pipe is arranged in the second diaphragm box.
The technical scheme of the invention is further improved as follows: the bypass medium pipe is in a horn shape and is connected with the main medium pipe in an angle of 30-60 degrees.
The technical scheme of the invention is further improved as follows: the bypass medium pipe is connected with the main medium pipe at an angle of 45 degrees.
The technical scheme of the invention is further improved as follows: the first diaphragm box comprises two diaphragm box parts which are connected in a sealing way (preferably, the sealing connection of a symmetrical structure is adopted), a cleaning port arranged at the upper end of one diaphragm box part, a liquid discharge port arranged at the lower end of the diaphragm box part, a transmission medium port arranged at the upper end of the other diaphragm box part, and a transmission medium filled in the first diaphragm box through the transmission medium port;
the first and second bellows are of identical construction, and the diaphragm of the low-pressure or high-pressure sensor is arranged between the respective two bellows parts.
The technical scheme of the invention is further improved as follows: the two bellows parts are symmetrically arranged and connected through a flange.
The technical scheme of the invention is further improved as follows: the transmission medium is water, antifreeze liquid or silicon oil.
The technical scheme of the invention is further improved as follows: the protective sleeve is a hard protective tube.
The technical scheme of the invention is further improved as follows: the differential pressure transmitter is provided with a touch key or an infrared key, but not limited to an infrared key, preferably an infrared key.
The technical scheme of the invention is further improved as follows: the differential pressure densimeter measuring and protecting device is installed on the medium feeding pipe in series.
Due to the adoption of the technical scheme, the invention has the following technical effects:
1. the bypass medium pipe of the differential pressure densimeter measuring and protecting device can effectively control the flow rate and stabilize the measurement.
2. The low/high pressure sensor is protected by the diaphragm boxes, and when a medium flows through the measuring chamber, the diaphragm of the low/high pressure sensor cannot be directly washed away, but is isolated by the diaphragm boxes and transmits a pressure signal to the pressure sensor, so that the service life of the pressure sensor product is ensured, and measurement errors caused by aggregation of granular media or bubbles are prevented.
3. In addition, the diaphragm box is provided with the cleaning port and the liquid discharge port, cleaning liquid enters from the cleaning port at the upper end of the diaphragm box and exits from the liquid discharge port at the lower end of the diaphragm box, and the diaphragm on the diaphragm box can be cleaned without detaching the diaphragm box when the machine is stopped, so that the working time of maintenance personnel is greatly reduced, and the overhauling efficiency is improved.
4. The transmission medium port is arranged on the diaphragm capsule, and the diaphragm capsule is filled with the transmission medium after the device is installed, so that the requirement of installation specifications is met. The transmission medium can be selected from silicone oil, the viscosity-temperature performance of the silicone oil is good, and the viscosity change is small in a wide temperature range.
5. The pressure guide pipe is provided with the protective sleeve which is connected with the differential pressure transmitter, so that the measurement error caused by vibration and excessive bending of the pressure guide pipe is avoided, and the measurement precision is ensured.
6. The differential pressure transmitter is provided with the infrared keys, and the parameters are adjusted without opening the front cover.
7. The invention has simple structure, convenient operation and use, stable work, good use performance and high popularization value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the device comprises a main medium pipe 1, a main medium pipe 2, a bypass medium pipe 3, a first diaphragm capsule 3-1, diaphragm capsule parts I, 3-2, diaphragm capsule parts II, 3-3, cleaning ports I, 3-4, transmission medium ports I, 3-5, liquid discharge ports I, 4, a second diaphragm capsule 4-1, diaphragm capsule parts III, 4-2, diaphragm capsule parts IV, 4-3, cleaning ports II, 4-4, transmission medium ports II, 4-5, liquid discharge ports II, 5-1, a low-pressure sensor 5-2, a high-pressure sensor 6-1, a low-pressure pipe 6-2, a high-pressure pipe 7, a protective sleeve 8 and a differential pressure transmitter.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific embodiments:
the invention discloses a measuring and protecting device of a differential pressure type densimeter, which is used for stably measuring the differential pressure type densimeter and isolating and protecting a diaphragm of a pressure sensor. The following are specific examples:
the differential pressure densimeter measuring and protecting device comprises a main medium pipe 1 vertically installed on a medium feeding pipe, a bypass medium pipe 2 is fixedly installed on the side face of the main medium pipe 1, a first diaphragm capsule 3 and a second diaphragm capsule 4 are respectively arranged above and below the bypass medium pipe 2, a low-pressure sensor 5-1 and a high-pressure sensor 5-2 are respectively arranged on the sensor sides of the first diaphragm capsule 3 and the second diaphragm capsule 4, a low-pressure guide pipe 6-1 and a high-pressure guide pipe 6-2 are respectively arranged on the low-pressure sensor 5-1 and the high-pressure sensor 5-2, and a protecting sleeve 7 and a differential pressure transmitter 8 are arranged outside the low-pressure guide pipe 6-1 and the high-pressure guide pipe 6-2. The differential pressure transmitter 8 is positioned on the protective sleeve 7, and the low-pressure pipe 6-1 and the high-pressure pipe 6-2 are both connected with the differential pressure transmitter 8.
The diaphragm of the low-pressure sensor 5-1 is disposed in the first bellows 3, and the diaphragm of the high-pressure guide tube 6-2 is disposed in the second bellows 4.
When the medium pump operates, most of the medium passes through the main medium pipe 1, a small part of the medium passes through the bypass medium pipe 2, the medium is isolated and protected by the first diaphragm capsule 3 and the second diaphragm capsule 4, the low-pressure sensor 5-1 and the high-pressure sensor 5-2 respectively sense a low-pressure signal and a high-pressure signal, the low-pressure signal and the high-pressure signal are transmitted to the differential pressure transmitter 8 through the low-pressure guide pipe 6-1 and the high-pressure guide pipe 6-2 respectively, and the low-pressure guide pipe 6-1 and the high-pressure guide pipe 6-. The differential pressure transmitter 8 converts the measured differential pressure signal into an electric signal corresponding to the differential pressure signal, transmits the electric signal to the converter, and converts the electric signal into a standard 4-20 mA electric signal through amplification and other processing, and outputs the standard 4-20 mA electric signal, namely the standard 4-20 mA electric signal is converted into a density value.
In the specific implementation of the invention, as shown in fig. 1, flanges are arranged at the upper end and the lower end of a main medium pipe 1, and are vertically arranged on a medium feeding pipe and connected with the flanges. Two holes are formed in the side face of the main medium pipe 1, the hole diameter is the same as the diameter of the bypass medium pipe 2, the center distance between the two holes is 1 meter, the bypass medium pipe 2 is welded at the position, the bypass medium pipe 2 is in a horn shape, and the bypass medium pipe 2 is connected with the main medium pipe 1 in an angle of 30-60 degrees, and is preferably welded in an angle of 45 degrees.
The bypass medium pipe 2 is provided with a first diaphragm capsule 3 and a second diaphragm capsule 4 which are connected by screw thread; the first bellows 3 and the second bellows 4 are identical in structure. The first diaphragm capsule 3 is provided with a diaphragm capsule part 3-1I, a diaphragm capsule part 3-2 II, a cleaning port 3-3I, a transmission medium port 3-4I and a liquid discharge port 3-5I; the second diaphragm capsule 4 is provided with a diaphragm capsule part III 4-1, a diaphragm capsule part IV 4-2, a cleaning port 4-3 II, a transmission medium port 4-4 II and a liquid discharge port 4-5 II; the diaphragm part I3-1 and the diaphragm part 3-2 II are connected through flanges, and a low-pressure sensor 5-1 is arranged between the diaphragm parts; the upper end of the diaphragm box part I3-1 is provided with a cleaning port 3-3I, the lower end of the diaphragm box part 3-1I is provided with a liquid discharge port 3-5I, the upper end of the diaphragm box part II 3-2 is provided with a transmission medium port 3-4I, and the cleaning port I3-3 and the transmission medium port I3-4 can be symmetrically arranged; the diaphragm capsule part 4-1 III and the diaphragm capsule part 4-2 IV are connected through flanges, and a diaphragm of a high-pressure sensor 5-2 is arranged between the diaphragm capsule part 4-1 III and the diaphragm capsule part 4-2 IV; the upper end of the diaphragm box part III 4-1 is provided with a cleaning port II 4-3, the lower end of the diaphragm box part III 4-1 is provided with a liquid outlet II 4-5, the upper end of the diaphragm box part IV 4-2 is provided with a transmission medium port 4-4 II, and the cleaning port 4-3 II and the transmission medium port II 4-4 can also be symmetrically arranged.
The sensor sides of the first bellows 3 and the second bellows 4 are respectively provided with a corresponding low pressure sensor 5-1 and a corresponding high pressure sensor 5-2 which are connected by screw threads. The low pressure sensor 5-1 and the high pressure sensor 5-2 are respectively provided with a corresponding low pressure guide pipe 6-1 and a corresponding high pressure guide pipe 6-2. And a protective sleeve 7 and a differential pressure transmitter 8 are arranged outside the low-pressure guide pipe 6-1 and the high-pressure guide pipe 6-2, and the protective sleeve 7 is in threaded connection with the differential pressure transmitter 8.
The bypass medium pipe of the differential pressure densimeter measuring and protecting device can effectively control the flow rate and stably measure. The diaphragm of the pressure sensor is protected by the diaphragm box, and the medium cannot directly scour the diaphragm of the pressure sensor when flowing through the measuring chamber, but is isolated by the diaphragm box and transmits a pressure signal to the pressure sensor, so that the service life of a product is ensured, and the measurement error caused by the aggregation of granular medium or bubbles is prevented. In addition, the diaphragm box is provided with a cleaning port and a liquid discharge port, and cleaning liquid enters from the cleaning port at the upper end of the diaphragm box and exits from the liquid discharge port at the lower end of the diaphragm box. When the machine is stopped, the diaphragm on the diaphragm box can be cleaned without detaching the diaphragm box, so that the time for maintenance personnel is greatly reduced. The invention has simple structure, convenient use, stable work and good use performance.
The bypass medium pipe can effectively control the flow velocity and stably measure.
The low/high pressure sensor is protected by the diaphragm boxes, and when a medium flows through the measuring chamber, the diaphragm of the low/high pressure sensor cannot be directly washed away, but is isolated by the diaphragm boxes and transmits a pressure signal to the pressure sensor, so that the service life of a product is ensured, and a measuring error caused by aggregation of granular media or bubbles is prevented.
The membrane box is provided with a cleaning port and a liquid discharge port, and cleaning liquid enters from the cleaning port at the upper end of the membrane box and exits from the liquid discharge port at the lower end of the membrane box. When the machine is stopped, the diaphragm on the diaphragm box can be cleaned without detaching the diaphragm box, so that the time for maintenance personnel is greatly reduced. The diaphragm capsule is provided with a transmission medium port, and after the device is installed, the diaphragm capsule is filled with the transmission medium, so that the requirement of installation specifications is met. The silicone oil, water and antifreeze liquid can be selected, the viscosity-temperature performance of the silicone oil is good, the viscosity change is small in a wide temperature range, and the silicone oil is recommended to be used.
The pressure guide pipe is provided with the protection sleeve which is connected with the differential pressure transmitter, so that the measurement error caused by vibration and excessive bending of the pressure guide pipe is avoided.
The differential pressure transmitter is provided with the infrared keys, and the parameters are adjusted without opening the front cover.
The differential pressure densimeter measuring and protecting device is installed on a medium feeding pipe in series, wherein the series connection is similar to the circuit series connection. The invention has the characteristics of simple structure, convenient operation and use, stable work and good use performance, and has higher popularization and application values.
Claims (9)
1. The utility model provides a differential pressure formula densimeter is measured and protection device which characterized in that: the device comprises a main medium pipe (1) vertically arranged on a medium feeding pipe, a bypass medium pipe (2) fixed on the side surface of the main medium pipe (1), a first diaphragm capsule (3) and a second diaphragm capsule (4) which are vertically distributed on the bypass medium pipe (2), a low-pressure sensor (5-1) and a high-pressure sensor (5-2) which are respectively arranged on the sensor sides of the first diaphragm capsule (3) and the second diaphragm capsule (4) correspondingly, a low-pressure guide pipe (6-1) connected with the low-pressure sensor (5-1), a high-pressure guide pipe (6-2) connected with the high-pressure sensor (5-2), a protective sleeve (7) arranged outside the low-pressure guide pipe (6-1) and the high-pressure guide pipe (6-2), and a differential pressure transmitter (8) fixedly connected with the protective sleeve (7), wherein the low-pressure guide pipe (6-1) and the high-pressure guide pipe (6-2) are respectively connected with the differential pressure transmitter ( Connecting;
the diaphragm of the low-pressure sensor (5-1) is arranged in the first diaphragm capsule (3), and the diaphragm of the high-pressure guide pipe (6-2) is arranged in the second diaphragm capsule (4).
2. The differential pressure densitometer measurement and protection device of claim 1, characterized by: the bypass medium pipe (2) is in a horn shape and is connected with the main medium pipe (1) in an angle of 30-60 degrees.
3. The differential pressure densitometer measurement and protection device of claim 2, characterized by: the bypass medium pipe (2) is connected with the main medium pipe (1) in an angle of 45 degrees.
4. The differential pressure densitometer measurement and protection device of claim 1, characterized by: the first diaphragm capsule (3) comprises two diaphragm capsule parts which are connected in a sealing way, a cleaning port arranged at the upper end of one diaphragm capsule part, a liquid outlet arranged at the lower end of the diaphragm capsule part, a transmission medium port arranged at the upper end of the other diaphragm capsule part and a transmission medium filled in the first diaphragm capsule (3) through the transmission medium port;
the first bellows (3) and the second bellows (4) are of the same structure, and the diaphragms of the low-pressure sensor (5-1) or the high-pressure sensor (5-2) are arranged between the corresponding two bellows parts.
5. The differential pressure densitometer measurement and protection device of claim 4, wherein: the two bellows parts are symmetrically arranged and connected through a flange.
6. The differential pressure densitometer measurement and protection device of claim 4, wherein: the transmission medium is water or antifreeze liquid or silicon oil.
7. The differential pressure densitometer measurement and protection device of claim 1, characterized by: the protective sleeve (7) is a hard protective tube.
8. The differential pressure densitometer measurement and protection device of claim 1, characterized by: the differential pressure transmitter (8) is provided with a touch key or an infrared key.
9. The differential pressure densitometer measurement and protection device of any of claims 1 to 8, wherein: the differential pressure densimeter measuring and protecting device is installed on the medium feeding pipe in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128597.8A CN112858096A (en) | 2021-01-29 | 2021-01-29 | Differential pressure type densimeter measuring and protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128597.8A CN112858096A (en) | 2021-01-29 | 2021-01-29 | Differential pressure type densimeter measuring and protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112858096A true CN112858096A (en) | 2021-05-28 |
Family
ID=75986664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110128597.8A Pending CN112858096A (en) | 2021-01-29 | 2021-01-29 | Differential pressure type densimeter measuring and protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112858096A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201497528U (en) * | 2009-06-18 | 2010-06-02 | 项家从 | Anti-freeze differential pressure type flow meter without heat tracing |
| CN101923030A (en) * | 2010-07-16 | 2010-12-22 | 青岛海威茨仪表有限公司 | Device for measuring density of wet steam |
| CN102384813A (en) * | 2011-11-07 | 2012-03-21 | 刘大伟 | Remote-transmission pressure and differential pressure transmitter with temperature compensation piston |
| CN102393346A (en) * | 2011-11-09 | 2012-03-28 | 田志刚 | Online density analyzing instrument |
| CN202195996U (en) * | 2011-08-03 | 2012-04-18 | 马兆辉 | Pipeline type online liquid density test transducer |
| CN203414381U (en) * | 2013-09-04 | 2014-01-29 | 黑龙江科技大学 | Device for detecting differential pressure density of dense medium suspension liquid on line |
| CN203838030U (en) * | 2014-05-23 | 2014-09-17 | 王力威 | Density measuring device for dense-medium coal dressing suspension liquid |
| CN204203030U (en) * | 2014-09-15 | 2015-03-11 | 烟台开发区奥特仪表制造有限公司 | A kind of intelligent densitometer |
| CN207779502U (en) * | 2018-01-12 | 2018-08-28 | 湖北三宁化工股份有限公司 | With the device for rinsing double flange diaphragm differential pressure transmitters measurement viscous medium liquid levels |
-
2021
- 2021-01-29 CN CN202110128597.8A patent/CN112858096A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201497528U (en) * | 2009-06-18 | 2010-06-02 | 项家从 | Anti-freeze differential pressure type flow meter without heat tracing |
| CN101923030A (en) * | 2010-07-16 | 2010-12-22 | 青岛海威茨仪表有限公司 | Device for measuring density of wet steam |
| CN202195996U (en) * | 2011-08-03 | 2012-04-18 | 马兆辉 | Pipeline type online liquid density test transducer |
| CN102384813A (en) * | 2011-11-07 | 2012-03-21 | 刘大伟 | Remote-transmission pressure and differential pressure transmitter with temperature compensation piston |
| CN102393346A (en) * | 2011-11-09 | 2012-03-28 | 田志刚 | Online density analyzing instrument |
| CN203414381U (en) * | 2013-09-04 | 2014-01-29 | 黑龙江科技大学 | Device for detecting differential pressure density of dense medium suspension liquid on line |
| CN203838030U (en) * | 2014-05-23 | 2014-09-17 | 王力威 | Density measuring device for dense-medium coal dressing suspension liquid |
| CN204203030U (en) * | 2014-09-15 | 2015-03-11 | 烟台开发区奥特仪表制造有限公司 | A kind of intelligent densitometer |
| CN207779502U (en) * | 2018-01-12 | 2018-08-28 | 湖北三宁化工股份有限公司 | With the device for rinsing double flange diaphragm differential pressure transmitters measurement viscous medium liquid levels |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2935096Y (en) | Integrated differential pressure flowmeter | |
| CN201828300U (en) | Flange clamp type temperature and pressure compensation vortex street flowmeter | |
| CN201697644U (en) | Integrated differential pressure flowmeter | |
| CN206708478U (en) | A kind of integrated form flow equilibrium measuring unit | |
| CN112858096A (en) | Differential pressure type densimeter measuring and protecting device | |
| CN210638744U (en) | Differential pressure flowmeter | |
| CN209181870U (en) | Liquid level emasuring device | |
| CN116337161A (en) | Low-flow-velocity vortex street flow sensor | |
| CN209512940U (en) | A kind of novel orifice flowmeter | |
| CN211651707U (en) | Thermal gas mass flowmeter | |
| CN104215360B (en) | Calorimeter based on novel movable differential pressure type flowmeter | |
| CN216348860U (en) | Flow compensation type liquid turbine flowmeter | |
| CN207816505U (en) | A kind of pressure transmitter | |
| CN101871803A (en) | Integrated differential-pressure-type flow meter and application method thereof | |
| CN113324597A (en) | Method for simultaneously monitoring oil-gas-water three-phase flow | |
| CN211651699U (en) | Vortex street flowmeter | |
| CN215727501U (en) | Online differential pressure type density measuring device | |
| CN219736457U (en) | Inserted pipeline center measuring flow Li Tuoba sensor | |
| CN218156321U (en) | Long-diameter nozzle flowmeter | |
| CN220992043U (en) | Flange formula changer diaphragm seal flange washing unit | |
| CN210036833U (en) | Orifice flowmeter | |
| CN218724499U (en) | Liquid level measuring device for reducing disturbance of liquid level meter | |
| CN220104353U (en) | Diaphragm pressure gauge with diversion pipe | |
| CN209878030U (en) | Kolbe flow sensor | |
| CN210268752U (en) | Wafer type vortex shedding flowmeter |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |
|
| RJ01 | Rejection of invention patent application after publication |