CN109374092B - High-precision air-blowing reversing weighing system for calibrating flowmeter - Google Patents
High-precision air-blowing reversing weighing system for calibrating flowmeter Download PDFInfo
- Publication number
- CN109374092B CN109374092B CN201811633964.4A CN201811633964A CN109374092B CN 109374092 B CN109374092 B CN 109374092B CN 201811633964 A CN201811633964 A CN 201811633964A CN 109374092 B CN109374092 B CN 109374092B
- Authority
- CN
- China
- Prior art keywords
- oil
- reversing
- blowing
- inlet pipe
- air
- 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
- 238000005303 weighing Methods 0.000 title claims abstract description 70
- 238000007664 blowing Methods 0.000 title claims abstract description 61
- 238000012795 verification Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 107
- 239000007788 liquid Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/14—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using a weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Supply Of Fluid Materials To The Packaging Location (AREA)
Abstract
The invention relates to a high-precision air-blowing reversing weighing system for calibrating a flowmeter, oil in an oil inlet pipe enters a reversing head, the swinging angle of the oil inlet pipe is controlled through a reversing cylinder, so that the oil corresponds to different flow distribution channels of the reversing head, the change of the oil flow path and direction is realized, the oil flows out of the flow distribution channels of the reversing head, is dispersed along the upper surface of an oil distribution cap and slides into a weighing box along the inner side surface of the weighing box, the oil is prevented from directly impacting the bottom of the box, the stability of the system is increased, the oil is prevented from splashing, the weighing is more accurate, an electronic balance is protected, after the oil is finished, an air source is connected with an air inlet pipe of an air blowing mechanism, air is blown into the flow distribution channels of the reversing head through various air blowing ports of the air blowing mechanism, the oil adhered to the inner wall of the reversing head is blown out of the reversing head, unnecessary errors of experimental data are reduced, and more accurate experimental results are obtained.
Description
Technical Field
The invention relates to the technical field of oil detection equipment, in particular to a high-precision air-blowing reversing weighing system for flowmeter verification.
Background
In the verification of a flowmeter and the detection experiment of various performance indexes of oil liquid, a reversing mechanism is needed to be connected in a measuring pipeline or equipment, the reversing mechanism is used for changing the flow path and direction of the oil liquid to meet the experiment requirement, the oil liquid flows out of the reversing mechanism through the gravity of the oil liquid when passing through the reverser, but when the oil liquid passes through the reversing mechanism, part of the oil liquid stays or adheres to the inner wall of the reversing mechanism, and is difficult to flow out by the gravity of the oil liquid, so that serious interference is brought to an experiment result, the range of experimental error is seriously exceeded, when the oil liquid enters the weighing machine through the reversing mechanism, the oil inlet amount is larger when a larger weighing box is used, but the oil inlet pipe cannot be directly contacted with the weighing box for the purpose of weighing, so that the large oil inlet amount of the oil inlet can produce larger impact on the whole weighing system, the stability and the weighing precision of the weighing system are seriously influenced, meanwhile, the large oil inlet amount of the oil inlet can also produce splashing of the oil liquid, and the weighing effect on the accuracy of the experiment result is also influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a high-precision air-blowing reversing weighing system for flowmeter verification.
The specific contents are as follows: the high-precision air-blowing reversing weighing system for calibrating the flowmeter comprises an air-blowing reversing oil inlet device and a weighing box with an oil separator; the method is characterized in that:
The air blowing reversing oil inlet device comprises a fixed plate, a reversing cylinder, an oil inlet pipe, a Y-shaped reversing head and an air blowing mechanism, wherein the oil inlet pipe comprises a horizontal section and a vertical section, the free end of the horizontal section of the oil inlet pipe is horizontally fixed on the fixed plate through a revolute pair, a connecting plate which is correspondingly parallel to the vertical section is fixed on the horizontal section of the oil inlet pipe, the reversing cylinder is horizontally fixed on the side surface of the fixed plate through a small cantilever, the reversing cylinder and the oil inlet pipe are fixed on the same side surface of the fixed plate, one end of the reversing cylinder is hinged on the connecting plate, the reversing head is a Y-shaped cavity body and comprises a main runner and two symmetrical sub runners, the cavity of the main runner is divided into two parts corresponding to the cavity of the sub runners through a vertical partition board in the cavity of the reversing head, the main runner of the reversing head is vertically fixed on the side surface of the fixed plate through a large cantilever, and the free end of the vertical section of the oil inlet pipe extends into the reversing head from the upper port of the main runner of the reversing head, and the port of the free end of the vertical section of the oil inlet pipe is positioned right above the vertical partition board;
The blowing mechanism comprises an air inlet pipe, a blowing port and a blowing hoop communicated with the cavity, wherein the blowing hoop is horizontally fixed on the outer side wall of the reversing head along the joint of a main runner and a shunt of the reversing head, the communicating cavity communicated with one end of the periphery of the blowing hoop is arranged in the blowing hoop, a plurality of cavities which are obliquely downwards communicated with the shunt of the reversing head and the blowing port communicated with the communicating cavity of the blowing hoop are uniformly arranged in the blowing hoop, and the air inlet pipe communicated with the communicating cavity is respectively fixed on two symmetrical side surfaces of the blowing hoop;
The weighing box with the oil separator comprises an electronic balance, a weighing box with the upper part fixed and the oil separator fixed in the weighing box, wherein the weighing box is cylindrical with the upper end open, the bottom of the weighing box is fixed on a bearing surface of the electronic balance through a support column, the bottom in the weighing box is arranged in a reverse conical shape, an oil discharge pipe communicated with the interior of the weighing box and extending outwards is arranged at the cone tip of the reverse conical shape at the bottom, and an electromagnetic valve is arranged on a pipeline of the oil discharge pipe; the oil distributor comprises an umbrella-shaped oil distributing cap and supporting legs, the bottom of the oil distributing cap is vertically fixed on an inverted conical surface at the bottom of the weighing box through at least three supporting legs, the axis of the oil distributing cap is collinear with the axis of the weighing box, and the lower port of a sub-runner of the reversing head extends into the weighing box and is located right above the oil distributing cap.
Preferably, the horizontal section of the oil inlet pipe is communicated with a pipeline of the corresponding oil way on the other side surface of the fixed plate.
Preferably, the reversing cylinder comprises a cylinder body and a piston rod, wherein the cylinder body is horizontally fixed on the side surface of the fixed plate through a small cantilever, and the free end of the piston rod is hinged on the connecting plate.
Preferably, the air inlet pipe is communicated with an air source.
Preferably, the generatrix of the oil distributing cap is concave arc-shaped.
Preferably, the included angle alpha of the profile line of the cross section of the inner surface of the bottom of the weighing box passing through the central line is 90 degrees.
The beneficial technical effects of the invention
The invention relates to a high-precision air-blowing reversing weighing system for calibrating a flowmeter, oil in an oil inlet pipe enters a reversing head, the swinging angle of the oil inlet pipe is controlled through a reversing cylinder, so that the oil corresponds to different flow distribution channels of the reversing head, the change of the oil flow path and direction is realized, the oil flows out of the flow distribution channels of the reversing head, is dispersed along the upper surface of an oil distribution cap and slides into a weighing box along the inner side surface of the weighing box, the oil is prevented from directly impacting the bottom of the box, the stability of the system is improved, the oil is prevented from splashing, the weighing is more accurate, an electronic balance is protected, after the oil is finished, an air source is connected with an air inlet pipe of an air blowing mechanism, air is blown into the flow distribution channels of the reversing head through various air blowing ports of the air blowing mechanism, the oil adhered to the inner wall of the reversing head is blown out of the reversing head, unnecessary errors of experimental data are reduced, and more accurate experimental results are obtained.
Drawings
FIG. 1 is a cross-sectional view of a high-precision air-blown reversing weighing system for flowmeter certification;
FIG. 2 is a cross-sectional view of a blow reversing oil feed device;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 5 is a cross-sectional view of a weigh tank with an oil separator;
FIG. 6 is a front view of the oil separator;
FIG. 7 is a top view of FIG. 6;
In the figure: 2. the hydraulic oil distributor comprises an oil distributing cap, a supporting leg, a weighing box, a conical bottom part, a pillar, an oil discharging pipe, an electronic balance, an electromagnetic valve, a contour line of a concave part of the oil distributing cap, a piston rod of an air blowing cylinder, a cylinder body of the air blowing cylinder, a vertical section of an oil inlet pipe, a fixing plate and a main flow passage of a reversing head, an air inlet pipe, a communicating chamber, an air inlet, an air outlet, a reversing head and a reversing head, wherein the oil distributing pipe comprises a conical bottom part, a pillar, an oil discharging pipe, an oil distributing pipe, an electronic balance, an electromagnetic valve, an oil distributing cap, a contour line, an oil discharging cylinder, an oil cylinder, a cylinder body of the air blowing cylinder, an oil inlet pipe, a vertical section, a fixing plate and a reversing head, the main flow passage, the air inlet pipe, a communicating chamber, the air inlet pipe and the air inlet pipe, 18, the air inlet pipe air port, an air inlet port air port, an air distributing pipe and the reversing head, the air inlet pipe and the air inlet pipe.
Detailed Description
1-7, A high-precision air-blowing reversing weighing system for flow meter verification, which comprises an air-blowing reversing oil inlet device and a weighing box with an oil separator;
The air blowing reversing oil inlet device comprises a fixed plate, a reversing cylinder, an oil inlet pipe, a Y-shaped reversing head and an air blowing mechanism, wherein the oil inlet pipe comprises a horizontal section and a vertical section, the free end of the horizontal section of the oil inlet pipe is horizontally fixed on the fixed plate through a revolute pair, a connecting plate which is correspondingly parallel to the vertical section is fixed on the horizontal section of the oil inlet pipe, the reversing cylinder is horizontally fixed on the side surface of the fixed plate through a small cantilever, the reversing cylinder and the oil inlet pipe are fixed on the same side surface of the fixed plate, one end of the reversing cylinder is hinged on the connecting plate, the reversing head is a Y-shaped cavity body and comprises a main runner and two symmetrical sub runners, the cavity of the main runner is divided into two parts corresponding to the cavity of the sub runners through a vertical partition board in the cavity of the reversing head, the main runner of the reversing head is vertically fixed on the side surface of the fixed plate through a large cantilever, and the free end of the vertical section of the oil inlet pipe extends into the reversing head from the upper port of the main runner of the reversing head, and the port of the free end of the vertical section of the oil inlet pipe is positioned right above the vertical partition board;
The blowing mechanism comprises an air inlet pipe, a blowing port and a blowing hoop which is communicated with the cavity, wherein the blowing hoop is horizontally fixed on the outer side wall of the reversing head along the joint of a main runner and a shunt of the reversing head, the communicating cavity which is communicated with the head and the tail along the circumference of the blowing hoop is arranged in the blowing hoop, a plurality of cavities which are obliquely downwards communicated with the shunt of the reversing head and the blowing port of the communicating cavity of the blowing hoop are uniformly arranged in the blowing hoop, and the air inlet pipe which is communicated with the communicating cavity is respectively fixed on two symmetrical side surfaces of the blowing hoop.
The weighing box with the oil separator comprises an electronic balance, a weighing box with the upper part fixed and the oil separator fixed in the weighing box, wherein the weighing box is cylindrical with the upper end open, the bottom of the weighing box is fixed on a bearing surface of the electronic balance through a support column, the bottom in the weighing box is arranged in a reverse conical shape, an oil discharge pipe communicated with the interior of the weighing box and extending outwards is arranged at the cone tip of the reverse conical shape at the bottom, and an electromagnetic valve is arranged on a pipeline of the oil discharge pipe; the oil distributor comprises an umbrella-shaped oil distributing cap and supporting legs, the bottom of the oil distributing cap is vertically fixed on an inverted conical surface at the bottom of the weighing box through at least three supporting legs, the axis of the oil distributing cap is collinear with the axis of the weighing box, the lower port of a flow distributing channel of the reversing head extends into the weighing box and is located right above the oil distributing cap, and when oil flows down, the oil is dispersed and buffered along the oil distributing cap, so that the oil is prevented from directly impacting the bottom of the box, the stability of the system is improved, weighing is accurate, and an electronic balance is protected.
The horizontal section of the oil inlet pipe is communicated with a pipeline of the corresponding oil way on the other side surface of the fixed plate.
The reversing cylinder comprises a cylinder body and a piston rod, wherein the cylinder body is horizontally fixed on the side face of the fixed plate through a small cantilever, and the free end of the piston rod is hinged to the connecting plate.
The air inlet pipe is communicated with an air source.
The bus of the oil distributing cap is concave arc-shaped, so that the oil flowing into the oil distributing cap from the oil inlet pipe can slide along the upper surface of the oil distributing cap as much as possible, and the oil is prevented from being lifted up to generate splashing.
The included angle alpha of the profile line of the section of the inner surface of the bottom of the weighing box passing through the central line is 90 degrees, so that the oil in the weighing box can be discharged through the flushing and discharging oil pipe as much as possible.
The invention relates to a high-precision air-blowing reversing weighing system for calibrating a flowmeter, oil in an oil inlet pipe enters a reversing head, the swinging angle of the oil inlet pipe is controlled through a reversing cylinder, so that the oil corresponds to different flow distribution channels of the reversing head, the change of the oil flow path and direction is realized, the oil flows out of the flow distribution channels of the reversing head, is dispersed along the upper surface of an oil distribution cap and slides into a weighing box along the inner side surface of the weighing box, the oil is prevented from directly impacting the bottom of the box, the stability of the system is improved, the oil is prevented from splashing, the weighing is more accurate, an electronic balance is protected, after the oil is finished, an air source is connected with an air inlet pipe of an air blowing mechanism, air is blown into the flow distribution channels of the reversing head through various air blowing ports of the air blowing mechanism, the oil adhered to the inner wall of the reversing head is blown out of the reversing head, unnecessary errors of experimental data are reduced, and more accurate experimental results are obtained.
Claims (4)
1. The high-precision air-blowing reversing weighing system for calibrating the flowmeter comprises an air-blowing reversing oil inlet device and a weighing box with an oil separator; the method is characterized in that:
The air blowing reversing oil inlet device comprises a fixed plate, a reversing cylinder, an oil inlet pipe, a Y-shaped reversing head and an air blowing mechanism, wherein the oil inlet pipe comprises a horizontal section and a vertical section, the free end of the horizontal section of the oil inlet pipe is horizontally fixed on the fixed plate through a revolute pair, a connecting plate which is correspondingly parallel to the vertical section is fixed on the horizontal section of the oil inlet pipe, the reversing cylinder is horizontally fixed on the side surface of the fixed plate through a small cantilever, the reversing cylinder and the oil inlet pipe are fixed on the same side surface of the fixed plate, one end of the reversing cylinder is hinged on the connecting plate, the reversing head is a Y-shaped cavity body and comprises a main runner and two symmetrical sub runners, the cavity of the main runner is divided into two parts which respectively correspond to the cavity of the sub runners in the cavity of the reversing head through a vertical partition plate, the main runner of the reversing head is vertically fixed on the side surface of the fixed plate through a large cantilever, and the free end of the vertical section of the oil inlet pipe extends into the reversing head from the upper port of the main runner of the reversing head, and the port of the free end of the vertical section of the oil inlet pipe is positioned right above the vertical partition plate;
The blowing mechanism comprises an air inlet pipe, a blowing port and a blowing hoop communicated with the cavity, wherein the blowing hoop is horizontally fixed on the outer side wall of the reversing head along the joint of a main runner and a shunt of the reversing head, the communicating cavity communicated with one end of the periphery of the blowing hoop is arranged in the blowing hoop, a plurality of cavities which are obliquely downwards communicated with the shunt of the reversing head and the blowing port communicated with the communicating cavity of the blowing hoop are uniformly arranged in the blowing hoop, and the air inlet pipe communicated with the communicating cavity is respectively fixed on two symmetrical side surfaces of the blowing hoop;
The weighing box with the oil separator comprises an electronic balance, a weighing box with the upper part fixed and the oil separator fixed in the weighing box, wherein the weighing box is cylindrical with the upper end open, the bottom of the weighing box is fixed on a bearing surface of the electronic balance through a support column, the bottom in the weighing box is arranged in a reverse conical shape, an oil discharge pipe communicated with the interior of the weighing box and extending outwards is arranged at the cone tip of the reverse conical shape at the bottom, and an electromagnetic valve is arranged on a pipeline of the oil discharge pipe; the oil distributor comprises an umbrella-shaped oil distributing cap and supporting legs, the bottom of the oil distributing cap is vertically fixed on an inverted conical surface at the bottom of the weighing box through at least three supporting legs, the axis of the oil distributing cap is collinear with the axis of the weighing box, and the lower port of a sub-runner of the reversing head extends into the weighing box and is positioned right above the oil distributing cap;
The horizontal section of the oil inlet pipe is communicated with a pipeline of a corresponding oil way on the other side surface of the fixed plate;
The reversing cylinder comprises a cylinder body and a piston rod, wherein the cylinder body is horizontally fixed on the side face of the fixed plate through a small cantilever, and the free end of the piston rod is hinged to the connecting plate.
2. The high-precision air-blown reversing weighing system for flowmeter verification of claim 1, wherein: the air inlet pipe is communicated with an air source.
3. The high-precision air-blown reversing weighing system for flowmeter verification of claim 1, wherein: the bus of the oil distributing cap is concave arc-shaped.
4. The high-precision air-blown reversing weighing system for flowmeter verification of claim 1, wherein: the included angle alpha of the profile line of the section of the inner surface of the bottom of the weighing box passing through the central line is 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633964.4A CN109374092B (en) | 2018-12-29 | 2018-12-29 | High-precision air-blowing reversing weighing system for calibrating flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633964.4A CN109374092B (en) | 2018-12-29 | 2018-12-29 | High-precision air-blowing reversing weighing system for calibrating flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109374092A CN109374092A (en) | 2019-02-22 |
| CN109374092B true CN109374092B (en) | 2024-05-31 |
Family
ID=65371836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811633964.4A Active CN109374092B (en) | 2018-12-29 | 2018-12-29 | High-precision air-blowing reversing weighing system for calibrating flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109374092B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081956B (en) * | 2019-04-29 | 2024-05-10 | 航空工业(新乡)计测科技有限公司 | Variable viscosity lubricating oil micro-flow standard device |
| CN110081955B (en) * | 2019-04-29 | 2020-09-25 | 新乡航空工业(集团)有限公司 | Method for detecting variable viscosity lubricating oil micro-flowmeter |
| CN112212949B (en) * | 2020-09-21 | 2023-11-10 | 广州能源检测研究院 | Mechanical water meter verification method and device based on laser sensor |
| CN114252135A (en) * | 2021-12-29 | 2022-03-29 | 新乡航空工业(集团)有限公司 | Pneumatic asymmetric reversing mechanism for instrument detection equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556181A (en) * | 2009-05-20 | 2009-10-14 | 西安东风机电有限公司 | Composite static start-stop method mass flowmeter calibration system |
| CN202037790U (en) * | 2011-01-29 | 2011-11-16 | 河北雪龙机械制造有限公司 | Pulling type automatic sampling device for electric power storage (EPS) pre-foaming machine |
| CN202048943U (en) * | 2011-03-24 | 2011-11-23 | 沈阳合兴检测设备有限公司 | Time control water flow reversing device for warming heat radiator detector |
| CN202372236U (en) * | 2011-09-28 | 2012-08-08 | 中国计量科学研究院 | Constant water head water supply system of flow measuring device |
| CN202748108U (en) * | 2012-09-07 | 2013-02-20 | 丹东科泰仪器仪表有限公司 | Liquid reversing device of flow measurement standard system |
| CN103292875A (en) * | 2013-06-14 | 2013-09-11 | 中国人民解放军国防科学技术大学 | Reverser and liquid flow calibration system with reverser |
| CN104501916A (en) * | 2014-12-08 | 2015-04-08 | 西尼尔(南京)过程控制有限公司 | Liquid calibration system and calibration method thereof |
| CN204301819U (en) * | 2014-11-04 | 2015-04-29 | 新乡航空工业(集团)有限公司 | A kind of changement of liquid flow standard device |
| CN204301820U (en) * | 2014-11-04 | 2015-04-29 | 新乡航空工业(集团)有限公司 | A kind of weighing oil tank of liquid flow standard device |
| CN105066648A (en) * | 2015-09-09 | 2015-11-18 | 浦江特捷锁业有限公司 | Tea drying device control system |
| CN106643991A (en) * | 2016-12-28 | 2017-05-10 | 新乡航空工业(集团)有限公司 | Reversing weighing mechanism of micro flow standard device |
| CN207036237U (en) * | 2017-07-25 | 2018-02-23 | 武汉中理环保科技有限公司 | A kind of coal dust rotor weigher |
| CN209085728U (en) * | 2018-12-29 | 2019-07-09 | 新乡航空工业(集团)有限公司 | High-precision air-sweeping type commutation weighing system for meter proof |
-
2018
- 2018-12-29 CN CN201811633964.4A patent/CN109374092B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556181A (en) * | 2009-05-20 | 2009-10-14 | 西安东风机电有限公司 | Composite static start-stop method mass flowmeter calibration system |
| CN202037790U (en) * | 2011-01-29 | 2011-11-16 | 河北雪龙机械制造有限公司 | Pulling type automatic sampling device for electric power storage (EPS) pre-foaming machine |
| CN202048943U (en) * | 2011-03-24 | 2011-11-23 | 沈阳合兴检测设备有限公司 | Time control water flow reversing device for warming heat radiator detector |
| CN202372236U (en) * | 2011-09-28 | 2012-08-08 | 中国计量科学研究院 | Constant water head water supply system of flow measuring device |
| CN202748108U (en) * | 2012-09-07 | 2013-02-20 | 丹东科泰仪器仪表有限公司 | Liquid reversing device of flow measurement standard system |
| CN103292875A (en) * | 2013-06-14 | 2013-09-11 | 中国人民解放军国防科学技术大学 | Reverser and liquid flow calibration system with reverser |
| CN204301820U (en) * | 2014-11-04 | 2015-04-29 | 新乡航空工业(集团)有限公司 | A kind of weighing oil tank of liquid flow standard device |
| CN204301819U (en) * | 2014-11-04 | 2015-04-29 | 新乡航空工业(集团)有限公司 | A kind of changement of liquid flow standard device |
| CN104501916A (en) * | 2014-12-08 | 2015-04-08 | 西尼尔(南京)过程控制有限公司 | Liquid calibration system and calibration method thereof |
| CN105066648A (en) * | 2015-09-09 | 2015-11-18 | 浦江特捷锁业有限公司 | Tea drying device control system |
| CN106643991A (en) * | 2016-12-28 | 2017-05-10 | 新乡航空工业(集团)有限公司 | Reversing weighing mechanism of micro flow standard device |
| CN207036237U (en) * | 2017-07-25 | 2018-02-23 | 武汉中理环保科技有限公司 | A kind of coal dust rotor weigher |
| CN209085728U (en) * | 2018-12-29 | 2019-07-09 | 新乡航空工业(集团)有限公司 | High-precision air-sweeping type commutation weighing system for meter proof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109374092A (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109374092B (en) | High-precision air-blowing reversing weighing system for calibrating flowmeter | |
| CN104101390B (en) | Flow measuring device for measuring sewage in non-full pipe | |
| CN110081955B (en) | Method for detecting variable viscosity lubricating oil micro-flowmeter | |
| CN209085728U (en) | High-precision air-sweeping type commutation weighing system for meter proof | |
| US3459049A (en) | Spray pattern measurement | |
| CN104764496B (en) | A kind of aperture ozzle class flow measurement device based on acting head | |
| CN110081956B (en) | Variable viscosity lubricating oil micro-flow standard device | |
| CN106847008A (en) | A kind of reynolds test instrument | |
| CN203719708U (en) | Accurate small-flow-velocity measurement flowmeter | |
| CN211652018U (en) | Multiple stable series pipeline on-way resistance experiment appearance | |
| US3603148A (en) | Flow meter of the area type | |
| CN206649792U (en) | A kind of reynolds test instrument | |
| CN207650057U (en) | A kind of powder flowbility index detection device | |
| CN203148476U (en) | Novel V-shaped conical flow meter | |
| CN102982710B (en) | Reynolds experiment apparatus | |
| CN202451132U (en) | Automatic control metering device for oil well | |
| CN202748108U (en) | Liquid reversing device of flow measurement standard system | |
| CN209802931U (en) | Road surface water seepage instrument | |
| CN103206201A (en) | Automatic control measurement device of oil well | |
| CN105854354B (en) | A kind of gas-liquid separation device for on-line checking | |
| CN207571596U (en) | A kind of throttle type orifice flowmeter | |
| CN209356526U (en) | A kind of multi-cavity body device that tests the speed based on boundary-layer design | |
| CN108333027A (en) | A kind of parallel dispenser of water sample | |
| CN201413164Y (en) | Ball valve insertion type cone shaped flow meter | |
| CN214843544U (en) | Dynamic weighing liquid flow impact error full-automatic compensation device |
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 |
Effective date of registration: 20240426 Address after: 453000, Office Building for Metrology Experiment in Pingyuan Machinery Factory (Xinxiang), No.1 Jiefang Avenue (Middle Section), Muye District, Xinxiang City, Henan Province Applicant after: Aviation industry (Xinxiang) Measurement Technology Co.,Ltd. Country or region after: China Address before: 453049 No. 168 Jianshe Road Middle Road, Muye District, Xinxiang City, Henan Province Applicant before: XINXIANG AVIATION INDUSTRY (Group) Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |