CN102721442A - Liquid capacity type metal scraper flowmeter - Google Patents
Liquid capacity type metal scraper flowmeter Download PDFInfo
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- CN102721442A CN102721442A CN2011100789945A CN201110078994A CN102721442A CN 102721442 A CN102721442 A CN 102721442A CN 2011100789945 A CN2011100789945 A CN 2011100789945A CN 201110078994 A CN201110078994 A CN 201110078994A CN 102721442 A CN102721442 A CN 102721442A
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- rotor
- flowmeter
- main shaft
- cockscomb
- liquid capacity
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Abstract
The invention discloses a liquid capacity type metal scraper flowmeter which comprises a metering component group and an integrating block group, and is characterized in that the metering component group consists of a cavity including an inner shell and an inner upper cover, a rotor bearing and scrapers which are symmetrically distributed around a spindle are arranged on the spindle at the center of the cavity, a cylindrical rotor is arranged outside the rotor bearing by taking the spindle as a center, channel strips are arranged at positions where the outer ends of the scrapers are connected with the wall of the rotor, a cam is arranged on the spindle and connected with a roller by connecting a roller bearing, the roller is further connected with the scrapers, and a check block is arranged at a cavity between the outer wall of the rotor and the inner shell; and the top of the spindle is connected with the integrating block group which is used for flow integration. When the flowmeter is used for measuring, the liquid flowing state is stable, turbulence does not occur, accuracy is high and containers are not likely to be worn.
Description
Technical field
The present invention relates to a kind of liquid capacity formula flowmeter, is a kind of measuring instrument as the liquid volume flow that flows through in continuous or the discontinuous measurement closed conduit, particularly a kind of liquid capacity formula cockscomb flowmeter.
Background technology
Liquid capacity formula flowmeter is a kind of measuring instrument as the liquid volume flow that flows through in continuous or the discontinuous measurement closed conduit, is applicable to the transfer of crude oil and finished product and the metering of trade settlement.
There is a pressure differential in liquid between the import of flowmeter and the outlet, in whole metering process, needs to keep this pressure differential; Thereby promote the rotation of scraper plate and rotor; Scraper plate design in the flowmeter is to make entering flowmeter liquid not produce turbulent flow, the project that pressure differential does not reduce.Prior art is in the improvement of scraper plate; Corresponding patent documentation report is arranged, and like annular movable scraping plate, floating ring scraper plate, section scraper plate etc., these are to the shape and size of scraper plate; And scraper plate and miscellaneous part cooperate require very accurate, the cost of the making flowmeter of raising; In addition rotor is improved in addition,, require rotor to be meshing with each other as adopting roots rotor, still higher to accuracy requirement, and pressure differential still has reducing to a certain degree, influences measuring accuracy.
Can find out that from above-mentioned existing flowmeter the common discharge meter makes easily and gets into its inner liquid generation turbulent flow, reduces pressure differential; Cause that measurement is inaccurate, and improved flowmeter is higher to the corresponding component accuracy requirement on parts, component needs to make again; Raise the cost, and when measuring, because crude oil contains few part silt and impurity; Make the high component wear of precision easily, often the card table.
Sum up above-mentioned shortcoming, need a kind of arrangement of rationally arranging through global facility on the market, do not change the pressure differential of measuring liquid, do not produce turbulent flow, little flowmeter weares and teares.
Summary of the invention
For solving the problems of the technologies described above, the present invention provides a kind of liquid capacity formula cockscomb flowmeter, and through structural design again, it is more steady to make liquid pass through flowmeter, does not produce turbulent flow, is not easy wearing and tearing, longer service life.
The present invention realizes through following technical scheme:
A kind of liquid capacity formula cockscomb flowmeter; Comprise metering unit group and integrating block group, said metering unit group comprises the cavity of being made up of inner housing and interior loam cake, rotor bearing is set on the main shaft of cavity center and is the scraper plate that the center is symmetrically distributed with the main shaft; With the main shaft is that the center is provided with cylindrical rotor outside rotor bearing; Scraper plate outer end and rotor wall junction are provided with the groove bar, and main shaft is provided with cam, and cam connects roller through connecting roller bearing; Roller is connected with scraper plate again, and the cavity between rotor outer wall and inner housing is provided with a block; The main shaft top connects the integrating block group.
The bottom of said rotor connects a rotor cover through a rotor cover bearing that is installed on the said main shaft.
The surface of contact of said rotor and scraper plate lower end is provided with support roller.
Wear-resistant block is equipped with in the lower surface of said scraper plate.
Said inner housing outside is provided with shell body, and interior loam cake outside is provided with outer loam cake.So just formed double-shell structure, can eliminate the flowmeter cavity distortion that the influence owing to external force such as pressure reduction and pipeline tension force causes, thereby cause metering inaccurate.
Cavity bottom in the said inner housing connects the pipeline of draining the oil.
A bearing is installed in said shell body bottom.
Said integrating block group comprises big character wheel counter, precision corrector, photoimpact converter, shaft sealing block and gear reduction; Said gear reduction is installed in the top of said main shaft; The shaft sealing block is installed on the outer shell walls at corresponding main shaft top, and shaft sealing block top connects precision corrector, photoimpact converter and big character wheel counter successively.
Beneficial effect of the present invention is:
1, inner structure design more reasonable, when liquid passed through flowmeter, flow state was steady, does not produce turbulent phenomenon, and the pressure loss is littler than general flowmeter, and the measurement global error is reduced, and measuring accuracy is higher;
2, contour structures is more attractive in appearance, and critical piece all adopts high-abrasive material to process, and cavity space can not produce card table, longer service life with to scrape the board size arrangement reasonable.
Description of drawings
Fig. 1 is the structural representation of liquid capacity formula cockscomb flowmeter of the present invention
The big character wheel counter of 01-, 02-precision corrector, 03-photoimpact converter, 04-transmission umbrella, 05-shaft sealing block, the 06-valve of exitting, the outer loam cake of 07-; The 08-shell body, loam cake in the 09-gear reduction, 10-, 11-inner housing, 12-scraper plate, 13-rotor; The 14-rotor bearing, 15-main shaft, 16-rotor cover, 17-rotor cover bearing, 18-support roller, 19-roller bearing; 20-cam, 21-block, 22-circular seal ring, 23-bearing, 24-wear-resistant block, the 25-pipeline of draining the oil
Fig. 2 is the vertical view A-cam of liquid capacity formula cockscomb flowmeter part metering unit, B-inner housing, C-scraper plate, D-roller, E-rotor, F-block, G-groove bar, P-pressure differential
1,2,3 expression scraper plate sense of displacement
Embodiment
Below in conjunction with accompanying drawing, the present invention is further specified.
Like Fig. 1, be the structural representation of liquid capacity formula cockscomb flowmeter of the present invention, Fig. 2 is the vertical view of liquid capacity formula cockscomb flowmeter part metering unit.
Comprise metering unit group and integrating block group; Said metering unit group comprises the cavity of being made up of inner housing 10 and interior loam cake 11; Rotor bearing 14 is set on the main shaft 15 of cavity center and is the scraper plate 12 that the center is symmetrically distributed with main shaft 15, is that the center is provided with cylindrical rotor 13 outside rotor bearing 14 with main shaft 15;
Scraper plate 12 outer ends and rotor 13 wall junctions are provided with groove bar G (Fig. 2); Main shaft 15 is provided with cam 20; Cam 20 connects roller D (Fig. 2) through connecting roller bearing 19; Roller D (Fig. 2) is connected with scraper plate 12 again, and the cavity between rotor 13 outer walls and inner housing 11 is provided with a block F (Fig. 2); Main shaft 15 tops connect the integrating block group.
The bottom of rotor 13 connects a rotor cover 16 through a rotor cover bearing 14 that is installed on the main shaft 15.Rotor 13 is provided with support roller 18 with the surface of contact of scraper plate 12 lower ends.Wear-resistant block is equipped with in the lower surface of scraper plate 12, in order to increase the service life.Inner housing 11 outsides are provided with shell body 08, and interior loam cake 10 outsides are provided with outer loam cake 07.So just formed double-shell structure; Can eliminate the flowmeter cavity distortion that the influence owing to external force such as pressure reduction and pipeline tension force causes; Thereby cause metering inaccurate; Sealing between the double-shell structure adopts circular seal ring 22 to seal, and the cavity bottom in the inner housing 11 connects the pipeline 25 of draining the oil.A venting valve 06 is set on outer loam cake 07 outer wall, and the pipeline 25 of draining the oil makes the flowmeter internal pressure stabilises with venting valve 06.A bearing 23 is installed in shell body 08 bottom.
The integrating block group comprises big character wheel counter 01, precision corrector 02, photoimpact converter 03, shaft sealing block 05 and gear reduction 09; Wherein gear reduction 09 is installed in the top of main shaft 15; Shaft sealing block 05 is installed on the wall of the shell body 08 at corresponding main shaft 15 tops, and shaft sealing block 05 top connects precision corrector 02, photoimpact converter 03 and character wheel counter 01 greatly through transmission umbrella 04 successively.
Principle of work of the present invention is: like Fig. 2, after fluid to be measured flows into flowmeter, between the import of flowmeter and outlet, produce pressure differential P, promote scraper plate C and rotor E rotation.At the flowmeter alignment of shafts a fixed cam A is arranged; When rotor E rotates with scraper plate C; Because the wheel D on the scraper plate C forms line with cam A and contacts; Scraper plate C will produce the action of stretching out and withdrawing inside and outside the groove bar G above the rotor E, and forms the fixing cavity of a volume with inner housing B and rotor E.
When scraper plate C when 1 forwards 2 to, the airtight cavity between the 2-3 position forms, when scraper plate C when 2 forward 3 to;, the liquid in the airtight cavity begins to discharge, along with not stall of rotor E is moving; 1 scraper plate forwards 2 again to, and a new airtight cavity begins again to form, and so goes round and begins again; Rotor E whenever circles, and promptly has the liquid of four times airtight cavity to be discharged from, and converts the rotation revolution of rotor to corresponding flow value through gear reduction; By big character wheel counter accumulative total, thereby accomplish metering process.
At the flowmeter of inside nominal diameter more than 80, adopt the design of bivalve body usually, the present invention is an example with the bivalve body, its advantage is can eliminate because the flowmeter cavity that the influence of external force such as pressure differential and pipeline tension force causes is out of shape, cause measure inaccurate.But also help the care and maintenance of flowmeter, when flowmeter needs repairing, only need remove the coupling bolt of outer loam cake and shell body; Unload outer loam cake; Can take out meter, avoid dismantling a series of troubles that flowmeter brings, if pipeline need continue circulating liquid from pipeline; Only need outer loam cake and circular seal ring and shell body are installed, liquid just can continue to circulate.
The present invention is through structural design again, and it is more steady to make liquid pass through flowmeter, does not produce turbulent flow, is not easy wearing and tearing, longer service life.
Claims (8)
1. liquid capacity formula cockscomb flowmeter; Comprise metering unit group and integrating block group, it is characterized in that said metering unit group comprises the cavity of being made up of inner housing and interior loam cake, rotor bearing is set on the main shaft of cavity center and is the scraper plate that the center is symmetrically distributed with the main shaft; With the main shaft is that the center is provided with cylindrical rotor outside rotor bearing; Scraper plate outer end and rotor wall junction are provided with the groove bar, and main shaft is provided with cam, and cam connects roller through connecting roller bearing; Roller is connected with scraper plate again, and the cavity between rotor outer wall and inner housing is provided with a block; The main shaft top connects the integrating block group.
2. liquid capacity formula cockscomb flowmeter as claimed in claim 1 is characterized in that the bottom of said rotor connects a rotor cover through a rotor cover bearing that is installed on the said main shaft.
3. liquid capacity formula cockscomb flowmeter as claimed in claim 1 is characterized in that the surface of contact of said rotor and scraper plate lower end is provided with support roller.
4. liquid capacity formula cockscomb flowmeter as claimed in claim 1 is characterized in that wear-resistant block is equipped with in the lower surface of said scraper plate.
5. liquid capacity formula cockscomb flowmeter as claimed in claim 1 is characterized in that said inner housing outside is provided with shell body, and interior loam cake outside is provided with outer loam cake.
6. liquid capacity formula cockscomb flowmeter as claimed in claim 1 is characterized in that the cavity bottom in the said inner housing connects the pipeline of draining the oil.
7. liquid capacity formula cockscomb flowmeter as claimed in claim 1 is characterized in that bearing of said shell body bottom installation.
8. liquid capacity formula cockscomb flowmeter as claimed in claim 1; It is characterized in that said integrating block group comprises big character wheel counter, precision corrector, photoimpact converter, shaft sealing block and gear reduction; Said gear reduction is installed in the top of said main shaft; The shaft sealing block is installed on the outer shell walls at corresponding main shaft top, and shaft sealing block top connects precision corrector, photoimpact converter and big character wheel counter successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100789945A CN102721442A (en) | 2011-03-31 | 2011-03-31 | Liquid capacity type metal scraper flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100789945A CN102721442A (en) | 2011-03-31 | 2011-03-31 | Liquid capacity type metal scraper flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN102721442A true CN102721442A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100789945A Pending CN102721442A (en) | 2011-03-31 | 2011-03-31 | Liquid capacity type metal scraper flowmeter |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144734A (en) * | 2007-10-29 | 2008-03-19 | 陈还喜 | Flowmeter |
| CN201053886Y (en) * | 2007-06-14 | 2008-04-30 | 江苏朝阳液压机械集团有限公司 | Metal scrape plate flow meter |
| CN202092701U (en) * | 2011-03-31 | 2011-12-28 | 宝鸡市泰源石油设备有限责任公司 | Liquid positive-displacement metal scraper flowmeter |
-
2011
- 2011-03-31 CN CN2011100789945A patent/CN102721442A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201053886Y (en) * | 2007-06-14 | 2008-04-30 | 江苏朝阳液压机械集团有限公司 | Metal scrape plate flow meter |
| CN101144734A (en) * | 2007-10-29 | 2008-03-19 | 陈还喜 | Flowmeter |
| CN202092701U (en) * | 2011-03-31 | 2011-12-28 | 宝鸡市泰源石油设备有限责任公司 | Liquid positive-displacement metal scraper flowmeter |
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Application publication date: 20121010 |