CN105403728A - Measurement device of flow rate of dusty gas and measurement method thereof - Google Patents
Measurement device of flow rate of dusty gas and measurement method thereof Download PDFInfo
- Publication number
- CN105403728A CN105403728A CN201510985242.5A CN201510985242A CN105403728A CN 105403728 A CN105403728 A CN 105403728A CN 201510985242 A CN201510985242 A CN 201510985242A CN 105403728 A CN105403728 A CN 105403728A
- Authority
- CN
- China
- Prior art keywords
- pressure
- malleation
- negative pressure
- flow deflector
- pipe
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
Abstract
The invention relates to a measurement device of flow rate of dusty gas and a measurement method thereof. The measurement device comprises more than one positive pressure taking pipe and a negative pressure taking pipe. The positive pressure taking pipes stretch into a to-be-measured pipeline and are parallel to air flows in the to-be-measured pipeline. Positive pressure taking openings and a negative pressure taking opening are respectively arranged in the positive pressure taking pipes and the negative pressure taking pipe. A positive pressure flow guiding mechanism is arranged at each of the positive pressure taking openings. A negative pressure flow guiding mechanism is arranged at the negative pressure taking opening. The positive pressure taking pipes and the negative pressure taking pipe stretch out of the to-be-measured pipeline and then are connected with a differential pressure gauge via a lead-out pipe which is perpendicular to the positive pressure taking pipes and the negative pressure taking pipe. The positive pressure taking pipes are communicated with the positive pressure end of the differential pressure gauge. The negative pressure taking pipe is communicated with the negative pressure end of the differential pressure gauge. The lead-out pipe and the to-be-measured pipeline are sealed by a sealing cover. The outer side face of the sealing cover is fixed at the opening of the to-be-measured pipeline via multiple fixing buckles. The beneficial effects are that the measurement device is simple in structure, convenient to operate and capable of preventing blocking phenomena caused by dusty gas during the measurement; effects on measurement results are reduced; and measurement precision is improved.
Description
Technical field
The present invention relates to gas flow rate fields of measurement, particularly relate to a kind of measurement mechanism and measuring method thereof of dusty gas flow velocity.
Background technology
There is the problem of blocking measurement mechanism in the measurement of dusty gas flow velocity always, especially the situation of air-flow perpendicular flow, all can there are some problems in measurement mechanism conventional at present when applying, such as bourdon's tube, venturi, backing tube etc. all may result in blockage, single Venturi tube or backing tube also can affect use because the representativeness of measuring position is not all right, airfoil measurement mechanism can arrange ash discharge function, but this not only increases the complexity of operation, and still may affect measurement or result in blockage.
Summary of the invention
The object of the invention is for above weak point, provide a kind of measurement mechanism and method thereof of a dusty gas flow velocity, prevent the latch up phenomenon that dusty gas in measuring process causes.
The scheme that technical solution problem of the present invention adopts is: a kind of measurement mechanism of dusty gas flow velocity, comprise more than one to stretch in tested pipeline and with the malleation pressure pipe of parallel current in tested pipeline and a negative pressure taking pressure pipe, the bottom of described malleation pressure pipe and negative pressure taking pressure pipe offers malleation pressure tappings and negative pressure pressure tappings respectively, and described malleation pressure tappings place is provided with a malleation deflector; Described negative pressure pressure tappings place is provided with a negative-pressure guide mechanism; Described malleation pressure pipe and negative pressure taking pressure pipe extend out to that tested pipeline is outer to be connected with a differential pressure gauge respectively through a perpendicular fairlead, described malleation pressure pipe is connected with the positive pressure side of this differential pressure gauge, and described negative pressure taking pressure pipe is connected with the negative pressure end of this differential pressure gauge; Described fairlead and tested pipeline are through a seal cap sealing, and the lateral surface of described gland bonnet is fixed on the opening part of tested pipeline through several clips.
Further, described malleation deflector comprises one first fixed mount, it is downward on rear side of malleation pressure pipe bottom to be arranged on described first fixed mount and after outward extending first flow deflector and several be longitudinally arranged at the first flow deflector after first on front side of flow deflector at equal intervals, described first flow deflector is arcuation; Described negative-pressure guide mechanism comprises one second fixed mount, it is downward on rear side of negative pressure taking pressure pipe bottom to be arranged on described second fixed mount and after outward extending second flow deflector and several be longitudinally arranged at the second flow deflector after second on front side of flow deflector at equal intervals, described second flow deflector is plane.
Further, the spacing of each adjacent first flow deflector and the second flow deflector front end is equal respectively, and flow deflector equals the width of the malleation pressure tappings of 1/3rd after the rear end of each first flow deflector distance first, after the rear end distance second of each second flow deflector, flow deflector equals the width of the negative pressure pressure tappings of 1/3rd.
Further, the end of flow deflector after described first is positioned between flow deflector after described first fixed mount is installed in described first flow deflector and first; The end of flow deflector after described second is positioned between flow deflector after described second fixed mount is installed in described second flow deflector and second;
Further, the medial surface of described gland bonnet is provided with the boss for keeping tested pipeline opening part flow velocity, fills out and be provided with insulation material in described boss, and the lateral surface of described gland bonnet is provided with for coordinating fixing fin with described clip.
Further, described clip takes the shape of the letter U shape, and the both sides button of described clip is located at described gland bonnet both sides, and fixes through described clip side outwardly through a screw.
Further, fill out between the sealing surface of described gland bonnet and the sealing surface of pipeline tapping and be provided with encapsulant.
The present invention also provides a kind of measuring method of measurement mechanism of a kind of dusty gas flow velocity as described above, arranges one or more malleation measuring point and negative pressure measuring point respectively, and malleation measuring point to be arranged on malleation pressure pipe and to connect the positive pressure side of differential pressure gauge; Negative pressure measuring point is be arranged in negative pressure taking pressure pipe and connect the negative pressure end of differential pressure gauge; Be drawn out to outside runner through a fairlead by gland bonnet after in malleation pressure pipe and negative pressure taking pressure pipe and tested pipeline, parallel current arranges one section, and be access to differential pressure gauge, calculated the pressure differential of malleation measuring point and negative pressure measuring point by differential pressure gauge, obtain the gas flow rate in tested pipeline.
Further, described malleation measuring point is seven, and negative pressure measuring point is one, and the uniform intervals distribution ringwise in tested pipeline of malleation measuring point, negative pressure measuring point is positioned in the middle part of tested pipeline.
Compared with prior art, the present invention has following beneficial effect: by malleation pressure pipe is parallel from top to bottom with the flow direction of dusty gas in tested pipeline with negative pressure taking pressure pipe, the malleation that measurement gas flow velocity produces in positive pressure side and the pressure differential of negative pressure produced at negative pressure end, obtain the flow velocity of gas by the malleation of measured gas and the pressure reduction of negative pressure.By being positioned at malleation deflector and negative-pressure guide mechanism, the latch up phenomenon preventing dusty gas in measuring process from causing, reducing the impact on measurement result, improving measuring accuracy.In addition, pass through clip close fitting seal by gland bonnet and tested runner opening part, increase the impermeability of tested runner, improve the precision measured.The design of gland bonnet mainly in order to install, the convenience of repair and maintenance, if usually install and measure device, need to change whole measuring section, i.e. the runner of whole section of fluid, overhaul, need to cut open measuring section when safeguarding, constructional difficulties; Adopt the method for perforate construction fitted seal lid more easily good.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Fig. 1 is the structural representation of the measurement mechanism of the embodiment of the present invention.
Fig. 2 is the structural representation of the measurement mechanism forward deflector of the embodiment of the present invention.
Fig. 3 is the structural representation of the measurement mechanism negative sense deflector of the embodiment of the present invention.
Fig. 4 is 6 malleation measuring points of the embodiment of the present invention, the structural representation of 1 negative pressure measuring point.
Fig. 5 is 16 malleation measuring points of the embodiment of the present invention, the structural representation of 1 negative pressure measuring point.
In figure: 1-malleation pressure pipe; 2-fairlead; 3-gland bonnet; 30-boss; 4-differential pressure gauge; 5-clip; 6-negative pressure taking pressure pipe; 7-tested pipeline; 8-malleation pressure tappings; 9-malleation deflector; Flow deflector after 90-first; 91-first flow deflector; 92-first fixed mount; 10-negative pressure pressure tappings; 11-negative-pressure guide mechanism; Flow deflector after 110-second; 111-second flow deflector; 112-second fixed mount; 12-malleation measuring point; 13-negative pressure measuring point.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figures 1 to 3, the embodiment of the present invention provides a kind of measurement mechanism of dusty gas flow velocity, comprise more than one to stretch in tested pipeline and with the malleation pressure pipe 1 of parallel current in tested pipeline and a negative pressure taking pressure pipe 6, the bottom of described malleation pressure pipe 1 and negative pressure taking pressure pipe 6 offers malleation pressure tappings 8 and negative pressure pressure tappings 10 respectively, and described malleation pressure tappings 8 place is provided with a malleation deflector 9; Described negative pressure pressure tappings 10 place is provided with a negative-pressure guide mechanism 11; Described malleation pressure pipe 1 and negative pressure taking pressure pipe 6 extend out to that tested pipeline 7 is outer to be connected with a differential pressure gauge 4 respectively through a perpendicular fairlead 2, described malleation pressure pipe 1 is connected with the positive pressure side of this differential pressure gauge 4, and described negative pressure taking pressure pipe 1 is connected with the negative pressure end of this differential pressure gauge 4; Described fairlead 2 seals through a gland bonnet 3 with tested pipeline 7, and the lateral surface of described gland bonnet 3 is fixed on tested pipeline 7 opening part through several clips 5.
From the foregoing, beneficial effect of the present invention is: by by malleation pressure pipe 1 or negative pressure taking pressure pipe 6 parallel with flowing to of dusty gas in tested pipeline 7, measurement gas flow velocity forms differential pressure on measurement mechanism, is obtained the flow velocity of gas by the malleation of measured gas and the pressure reduction of negative pressure.By malleation deflector 9 and negative-pressure guide mechanism 11, the latch up phenomenon preventing dusty gas in measuring process from causing, reduces the impact on measurement result, improves measuring accuracy.In addition, pass through clip 5 close fitting seal by gland bonnet 3 and tested runner opening part, increase the impermeability of tested runner, improve the precision measured.In Fig. 1, malleation pressure pipe partly overlaps.
In the present embodiment, described malleation deflector 9 comprises one first fixed mount 92, it is downward on rear side of this malleation pressure pipe 1 bottom to be arranged on described first fixed mount 92 and after outward extending first flow deflector 90 and several be longitudinally arranged at the first flow deflector 91 after first on front side of flow deflector 90 at equal intervals, described first flow deflector 91 is in arcuation; Described negative-pressure guide mechanism 11 comprises one second fixed mount 112, it is downward on rear side of negative pressure taking pressure pipe 6 bottom to be arranged on described second fixed mount 112 and after outward extending second flow deflector 110 and several be longitudinally arranged at the second flow deflector 111 after second on front side of flow deflector 110 at equal intervals, described second flow deflector 111 is in plane.
As shown in Figure 2, in forward deflector, the first rear flow deflector 90 broadens downwards gradually along malleation pressure tappings 8, tapering can get 30 ° (one-sided 15 °, vertical direction) left and right, after first, the degree of crook of flow deflector 90 diminishes from top to bottom gradually, and lower end is level substantially, the width of 1-2 times of malleation pressure tappings 8 is stretched out forward in the bottom of the first rear flow deflector 90 as shown in Figure 2, be highly the width of 3-5 times of pressure tappings, upper end is vertical, with pressure tappings smooth connection.The width of the first flow deflector 91 generally can get about 1.4 times of the width of the first rear fair water fin 90 of malleation pressure tappings 8 or identical height and position, the quantity of flow deflector can be 5-7 sheet, the level interval of each adjacent first flow deflector 91 front end should be equal, width from the bending direction of the nearest a slice flow deflector of malleation pressure tappings 8 approximately gets about 1.5 times of respective direction malleation pressure tappings 8 width, in recessed shape, outside is higher, the level interval of the first flow deflector 91 front end and malleation pressure tappings 8 front end is 1/3-1/2 malleation pressure tappings 8 width, first flow deflector 91 is also 1/3-1/2 malleation pressure tappings 8 width with the vertical interval of malleation pressure tappings 8 front end, first flow deflector 91 front end upwarps 60-90 ° (with horizontal plane angle), flow deflector rear end (inner side) Cheng Shuiping or slightly upwarp, each first flow deflector 91 rear end (inner side) is apart from rear fair water fin about 1/3 pressure tappings width.
As shown in Figure 3, negative-pressure guide mechanism 11 is with the difference part of malleation deflector 9: the second flow deflector 111 is planes, and water conservancy diversion direction is different from the first flow deflector.
In the present embodiment, the spacing of each adjacent first flow deflector 91 and the second flow deflector 111 front end is equal respectively, and flow deflector 90 equals the width of the malleation pressure tappings 8 of 1/3rd after the rear end of each first flow deflector 91 distance first, after the rear end distance second of each second flow deflector 111, flow deflector 110 equals the width of the negative pressure pressure tappings 10 of 1/3rd.The front and back end of described first flow deflector 91 and the second flow deflector 111 need be polished into circle, and polishing, to avoid dust stratification.Malleation pressure pipe 1 and fairlead 2 can be circular also can with square.Pressure pipe 1 of the present invention adopts rectangular tube, size is generally 10-30mm, and size too little being unfavorable for prevents blocking, for large-sized runner (such as more than diameter 2m), can adopt the pressure tappings of large-size, and fairlead 2 adopts circular or square pipe can.
In the present embodiment, the end of flow deflector 90 after described first is positioned between flow deflector 90 after described first fixed mount 92 is installed in described first flow deflector 91 and first; The end of flow deflector 110 after described second is positioned between flow deflector 110 after described second fixed mount 112 is installed in described second flow deflector 111 and second.
In the present embodiment, the medial surface of described gland bonnet 3 is provided with the boss 30 for keeping tested pipeline 7 opening part flow velocity, fills out and be provided with insulation material in described boss 30, and the lateral surface of described gland bonnet 3 is provided with for coordinating fixing fin with described clip 5.Described boss 30 object is to reduce the impact of this position on flowing, to ensure measurement effect, meanwhile, for the situation that temperature is higher, should load insulation material in boss 30.The front portion of boss 30 is gradient, is convenient to like this install.The plane of boss 30 and the wall of runner in one plane, namely can not affect the flowing of gas in tested pipeline 7 because of gland bonnet, be convenient to installation, repair and maintenance.Fin has one to design in seal cap sealing face, has two to design at flow passage side sealing surface, with enhanced leaktightness effect.
In the present embodiment, described clip 5 takes the shape of the letter U shape, and the both sides button of described clip 5 is located at described gland bonnet both sides, and fixes through described clip 5 side outwardly through a screw.By through described screw through the threaded hole of described clip 5 side, and screw bottom withstands on gland bonnet and is fixed, and does not need to offer threaded hole in gland bonnet, ensures the impermeability of gland bonnet.
In the present embodiment, fill out between the sealing surface of described gland bonnet 3 and the sealing surface of pipeline tapping and be provided with encapsulant.Encapsulant is waterstop, O-ring seal, seal etc.
The present invention also provides a kind of measuring method of measurement mechanism of a kind of dusty gas flow velocity as described above, by arranging one or more malleation measuring point 12 and negative pressure measuring point 13 respectively, malleation measuring point 12 to be arranged on malleation pressure pipe 1 and to connect the positive pressure side of differential pressure gauge 4; Negative pressure measuring point 13 is for be arranged in negative pressure taking pressure pipe 6 and to connect the negative pressure end of differential pressure gauge 4; By parallel current in malleation pressure pipe 1 and negative pressure taking pressure pipe 6 and tested pipeline 7, the opening part being covered on tested pipeline 7 by gland bonnet 3 is sealed, calculated the pressure differential of malleation measuring point 12 and negative pressure measuring point 13 by differential pressure gauge 4, obtain the gas flow rate in tested pipeline 7.
In the present embodiment, described malleation measuring point 12 is seven, and negative pressure measuring point 13 is one, and malleation measuring point 12 uniform intervals distribution ringwise in tested pipeline, negative pressure measuring point 13 is positioned in the middle part of tested pipeline, as shown in Figure 4.Described malleation measuring point 12 also can be 6, and negative pressure measuring point 13 is one.
The present invention also provides a kind of 16 malleation measuring points 12 and 1 negative pressure measuring point 13 installation diagram, and as shown in Figure 5, wherein, what be positioned at middle part is negative pressure measuring point 13, and other bifurcation site are malleation measurement point.
In sum, the measurement mechanism of a kind of dusty gas flow velocity provided by the invention and measuring method thereof, structure is simple, and easy to operate, the latch up phenomenon preventing dusty gas in measuring process from causing, reduces the impact on measurement result, improves measuring accuracy.
Above-listed preferred embodiment provided by the invention; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the measurement mechanism of a dusty gas flow velocity, it is characterized in that: comprise more than one to stretch in tested pipeline and with the malleation pressure pipe of parallel current in tested pipeline and a negative pressure taking pressure pipe, the bottom of described malleation pressure pipe and negative pressure taking pressure pipe offers malleation pressure tappings and negative pressure pressure tappings respectively, and described malleation pressure tappings place is provided with a malleation deflector; Described negative pressure pressure tappings place is provided with a negative-pressure guide mechanism; Described malleation pressure pipe and negative pressure taking pressure pipe extend out to that tested pipeline is outer to be connected with a differential pressure gauge respectively through a perpendicular fairlead, described malleation pressure pipe is connected with the positive pressure side of this differential pressure gauge, and described negative pressure taking pressure pipe is connected with the negative pressure end of this differential pressure gauge; Described fairlead and tested pipeline are through a seal cap sealing, and the lateral surface of described gland bonnet is fixed on the opening part of tested pipeline through several clips.
2. the measurement mechanism of a kind of dusty gas flow velocity according to claim 1, it is characterized in that: described malleation deflector comprises one first fixed mount, it is downward on rear side of malleation pressure pipe bottom to be arranged on described first fixed mount and after outward extending first flow deflector and several be longitudinally arranged at the first flow deflector after first on front side of flow deflector at equal intervals, described first flow deflector is arcuation; Described negative-pressure guide mechanism comprises one second fixed mount, it is downward on rear side of negative pressure taking pressure pipe bottom to be arranged on described second fixed mount and after outward extending second flow deflector and several be longitudinally arranged at the second flow deflector after second on front side of flow deflector at equal intervals, described second flow deflector is plane.
3. the measurement mechanism of a kind of dusty gas flow velocity according to claim 2, it is characterized in that: the spacing of each adjacent first flow deflector and the second flow deflector front end is equal respectively, and flow deflector equals the width of the malleation pressure tappings of 1/3rd after the rear end of each first flow deflector distance first, after the rear end distance second of each second flow deflector, flow deflector equals the width of the negative pressure pressure tappings of 1/3rd.
4. the measurement mechanism of a kind of dusty gas flow velocity according to claim 2, is characterized in that: be positioned at the end of flow deflector after described first between flow deflector after described first fixed mount is installed in described first flow deflector and first; The end of flow deflector after described second is positioned between flow deflector after described second fixed mount is installed in described second flow deflector and second.
5. the measurement mechanism of a kind of dusty gas flow velocity according to claim 1, it is characterized in that: the medial surface of described gland bonnet is provided with the boss for keeping tested pipeline opening part flow velocity, fill out in described boss and be provided with insulation material, the lateral surface of described gland bonnet is provided with for coordinating fixing fin with described clip.
6. the measurement mechanism of a kind of dusty gas flow velocity according to claim 5, is characterized in that: described clip takes the shape of the letter U shape, and the both sides button of described clip is located at described gland bonnet both sides, and fixes through described clip side outwardly through a screw.
7. the measurement mechanism of a kind of dusty gas flow velocity according to claim 5, is characterized in that: fill out between the sealing surface of described gland bonnet and the sealing surface of pipeline tapping and be provided with encapsulant.
8. the measuring method of the measurement mechanism of an a kind of dusty gas flow velocity as claimed in claim 1, it is characterized in that: arrange one or more malleation measuring point and negative pressure measuring point respectively, malleation measuring point to be arranged on malleation pressure pipe and to connect the positive pressure side of differential pressure gauge; Negative pressure measuring point is be arranged in negative pressure taking pressure pipe and connect the negative pressure end of differential pressure gauge; Be drawn out to outside runner through a fairlead by gland bonnet after in malleation pressure pipe and negative pressure taking pressure pipe and tested pipeline, parallel current arranges one section, and be access to differential pressure gauge, calculated the pressure differential of malleation measuring point and negative pressure measuring point by differential pressure gauge, obtain the gas flow rate in tested pipeline.
9. the measuring method of the measurement mechanism of a kind of dusty gas flow velocity according to claim 8, it is characterized in that: described malleation measuring point is seven, negative pressure measuring point is one, and the uniform intervals distribution ringwise in tested pipeline of malleation measuring point, negative pressure measuring point is positioned in the middle part of tested pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985242.5A CN105403728B (en) | 2015-12-25 | 2015-12-25 | A kind of measuring device and its measurement method of dusty gas flow velocity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985242.5A CN105403728B (en) | 2015-12-25 | 2015-12-25 | A kind of measuring device and its measurement method of dusty gas flow velocity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105403728A true CN105403728A (en) | 2016-03-16 |
| CN105403728B CN105403728B (en) | 2018-08-17 |
Family
ID=55469336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510985242.5A Active CN105403728B (en) | 2015-12-25 | 2015-12-25 | A kind of measuring device and its measurement method of dusty gas flow velocity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105403728B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014278A (en) * | 2020-08-14 | 2020-12-01 | 光力科技股份有限公司 | Portable gas parameter measuring module and portable gas parameter measuring instrument |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3803921A (en) * | 1968-07-15 | 1974-04-16 | P Dieterich | Sampling and flow measuring device |
| JPS58135966A (en) * | 1982-02-08 | 1983-08-12 | Mitsubishi Heavy Ind Ltd | Measuring method for purge type pitot tube |
| US4476729A (en) * | 1982-06-02 | 1984-10-16 | Allied Corporation | Apparatus for measuring gas velocity |
| SU1203436A1 (en) * | 1983-02-22 | 1986-01-07 | Алма-Атинский Филиал Джамбулского Технологического Института Легкой И Пищевой Промышленности | Device for measuring velocity of dust-laden flow of gas |
| US4825704A (en) * | 1986-07-28 | 1989-05-02 | Yamatake-Honeywell Co., Ltd. | Fluid flow speed measuring apparatus |
| RU2176395C1 (en) * | 2000-04-17 | 2001-11-27 | Вятская государственная сельскохозяйственная академия | Gear measuring speed of dust-carrying gas flow |
| RU2191353C2 (en) * | 2000-07-19 | 2002-10-20 | Гаврилов Евгений Иванович | Procedure determining flow rate of dust suspension in gas conduit |
| JP3375939B2 (en) * | 2000-08-18 | 2003-02-10 | ニッコーシ株式会社 | Pitot tube flow meter |
| US7255013B2 (en) * | 2005-11-02 | 2007-08-14 | General Electric Company | Method and apparatus for measuring cryogenic flow |
| CN202710125U (en) * | 2012-08-22 | 2013-01-30 | 郑州光力科技股份有限公司 | Integrated anti-blocking gas differential pressure flow meter |
| CN205280752U (en) * | 2015-12-25 | 2016-06-01 | 国网福建省电力有限公司 | Measurement device for dirty gas velocity of flow |
-
2015
- 2015-12-25 CN CN201510985242.5A patent/CN105403728B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3803921A (en) * | 1968-07-15 | 1974-04-16 | P Dieterich | Sampling and flow measuring device |
| JPS58135966A (en) * | 1982-02-08 | 1983-08-12 | Mitsubishi Heavy Ind Ltd | Measuring method for purge type pitot tube |
| US4476729A (en) * | 1982-06-02 | 1984-10-16 | Allied Corporation | Apparatus for measuring gas velocity |
| SU1203436A1 (en) * | 1983-02-22 | 1986-01-07 | Алма-Атинский Филиал Джамбулского Технологического Института Легкой И Пищевой Промышленности | Device for measuring velocity of dust-laden flow of gas |
| US4825704A (en) * | 1986-07-28 | 1989-05-02 | Yamatake-Honeywell Co., Ltd. | Fluid flow speed measuring apparatus |
| RU2176395C1 (en) * | 2000-04-17 | 2001-11-27 | Вятская государственная сельскохозяйственная академия | Gear measuring speed of dust-carrying gas flow |
| RU2191353C2 (en) * | 2000-07-19 | 2002-10-20 | Гаврилов Евгений Иванович | Procedure determining flow rate of dust suspension in gas conduit |
| JP3375939B2 (en) * | 2000-08-18 | 2003-02-10 | ニッコーシ株式会社 | Pitot tube flow meter |
| US7255013B2 (en) * | 2005-11-02 | 2007-08-14 | General Electric Company | Method and apparatus for measuring cryogenic flow |
| CN202710125U (en) * | 2012-08-22 | 2013-01-30 | 郑州光力科技股份有限公司 | Integrated anti-blocking gas differential pressure flow meter |
| CN205280752U (en) * | 2015-12-25 | 2016-06-01 | 国网福建省电力有限公司 | Measurement device for dirty gas velocity of flow |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112014278A (en) * | 2020-08-14 | 2020-12-01 | 光力科技股份有限公司 | Portable gas parameter measuring module and portable gas parameter measuring instrument |
| CN112014278B (en) * | 2020-08-14 | 2024-01-02 | 光力科技股份有限公司 | Portable gas parameter measurement module and portable gas parameter measuring instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105403728B (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109403265A (en) | The experimental rig and test method that the unrestrained top of simulation is burst | |
| CN105444830A (en) | Ultrasonic flowmeter | |
| CN106918369A (en) | A kind of device and measuring method for hydropower station pressure main conduit flow measurement | |
| CN104101390B (en) | Flow measuring device for measuring sewage in non-full pipe | |
| CN205280752U (en) | Measurement device for dirty gas velocity of flow | |
| CN105403728A (en) | Measurement device of flow rate of dusty gas and measurement method thereof | |
| CN203376230U (en) | Measuring device for pH (Potential of Hydrogen) value and density value of slurry | |
| CN203037548U (en) | Side-mounted differential pressure density measuring device | |
| CN210014810U (en) | Plug-in air quantity measuring device | |
| CN106052778A (en) | Electromagnetic measurement system for oil well flow quantity | |
| CN109752058A (en) | A kind of balance flow meter with protective layer | |
| CN215630388U (en) | Gravity water supply device | |
| CN201335843Y (en) | Double-throat-diameter venturi air-velocity measuring pipe | |
| CN209397563U (en) | The experimental rig that the unrestrained top of simulation is burst | |
| CN208366396U (en) | A kind of double fluid gauge measures fluid density device indirectly | |
| CN202393431U (en) | Distributive porous plate flowmeter | |
| CN206862427U (en) | A kind of canal irrigation field dewatering outlet door Pitot tube differential pressure shunting Venturi tube water meter | |
| CN207197620U (en) | A kind of batch meter | |
| CN205898213U (en) | Oil well flow electromagnetic measurement system | |
| CN205403894U (en) | Exit structure under bubble -type water level indicator's breather pipe | |
| CN205593577U (en) | Radiator temperature -sensing valve that has this flowmeter is taken into account to flow | |
| CN209841099U (en) | Glass rotameter convenient to wash | |
| CN213707737U (en) | Industrial water adjusting tank | |
| CN204330086U (en) | A kind of dome-roof tank floating ball lever meter | |
| CN215910293U (en) | Novel mounting structure of densimeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |