CN201053886Y - Metal scrape plate flow meter - Google Patents
Metal scrape plate flow meter Download PDFInfo
- Publication number
- CN201053886Y CN201053886Y CNU2007200382622U CN200720038262U CN201053886Y CN 201053886 Y CN201053886 Y CN 201053886Y CN U2007200382622 U CNU2007200382622 U CN U2007200382622U CN 200720038262 U CN200720038262 U CN 200720038262U CN 201053886 Y CN201053886 Y CN 201053886Y
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- CN
- China
- Prior art keywords
- rotor
- main shaft
- flowmeter
- scraper plate
- bearing
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a metal scratch flowmeter that has stable operation, high measuring precision and long service life, and comprises a measuring body, an outer shell, a supporting seat, an upper cover and a large print-wheel counter, wherein, a plurality of pairs of scratch boards are symmetrically distributed along a main shaft inside the measuring body and are connected with each other, and a cylindrical rotor with the main shaft as the center is arranged inside the measuring body, the outer end of the scratch board passes through a groove strip that is arranged on the wall of a rotor and can be retractable on the radial direction, the inner end of the scratch board is contacted with a cam fixed on the main shaft through a roller with a bearing, and two ends of the rotor are connected with the two ends of the bearing. The volumetric flowmeter is a measuring instrument that is used for consecutively measuring the volumetric flow rate of the liquid positioned inside a closed pipe.
Description
Technical field
The utility model relates to a kind of measuring instrument, particularly a kind of volumetric flow metering instrument.
Background technology
Volumeter is a kind of measuring instrument that is used as the volumetric flow rate of liquid in the continuous coverage closed conduct, is suitable for the transportation of crude oil and various petroleum products.
Existing volumeter in use has following shortcoming: the first, and when liquid can produce turbulent flow during by flowmeter, make the pressure of liquid diminish, cause the decline of measuring accuracy; The second, because crude oil contains various impurity, the part that is used in the flowmeter measure weares and teares easily, often the card table.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that existing volumeter exists, and provides a kind of and operates steadily, the cockscomb flowmeter of measuring accuracy height, long service life.
The technical solution of the utility model is: the cockscomb flowmeter, comprise metered body, shell, bearing, loam cake and big character wheel counter, be provided with several scraper plates in the described metered body to being symmetrically distributed and being connected with main shaft, and to be provided with the main shaft be the cylinder type rotor at center, the outer end of scraper plate is run through the groove bar that leaves on the rotor wall and can radially be stretched back and forth, the roller of the inner end of scraper plate by having bearing contacts with cam on being fixed on main shaft, and two ends of rotor links to each other with the bearing at main shaft two ends.
In order to improve wearing quality, can be provided with support roller at the surface of contact of rotor and scraper plate lower end, the lower surface of scraper plate is provided with wear-resistant block.
Principle of work is: after fluid to be measured enters flowmeter, between the import of flowmeter and outlet, produce pressure reduction and promote scraper plate and rotor rotation, a fixing out-of-operation cam is arranged at the flowmeter center, when rotor rotates with scraper plate, because the roller on the scraper plate contacts with cam, so scraper plate will produce the action of stretching out and withdrawing, and form the fixing metering cavitys of volumes with housing and rotor etc.
The utility model compared with prior art, its advantage is: 1, when liquid when the utility model, liquid flowing state is steady, can not produce turbulent flow, thereby the pressure loss is little, measuring accuracy is higher; 2, version of the present utility model is reasonable in design, can not produce the card table, and critical part also is not easy wearing and tearing, so serviceable life is longer.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a fundamental diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, 2, the cockscomb flowmeter, comprise metered body 1, shell 2, bearing 3, loam cake 4 and big character wheel counter 5, it is characterized in that: be provided with two pairs of scraper plates 7 that are symmetrically distributed and are connected with main shaft 6 in the described metered body 1, and to be provided with main shaft 6 be the cylinder type rotor 8 at center, the outer end of scraper plate 7 is run through the groove bar that leaves on rotor 8 walls and can radially be stretched back and forth, the roller 10 of the inner end of scraper plate 7 by having roller bearing 9 contacts with cam 11 on being fixed on main shaft 6, and rotor 8 two ends link to each other with the bearing 12 at main shaft two ends.
When liquid flows into from import 16, when scraper plate 7 turns to the b position from a position, closed cavity between the b-c forms, scraper plate 7 is when the b position turns to the c position then, the liquid of closed cavity begins to discharge from exporting 17, rotation along with rotor 8, the scraper plate of a position forwards the b position again to, and a new closed cavity begins again to form, and goes round and begins again for this reason, rotor 8 whenever circles, promptly there is the liquid of four times closed cavity to discharge, and, converts rotor 8 rotation numbers to corresponding flow value by series of gears reducing gear 15, by big character wheel counter 5 accumulative totals, thereby finish metering process.
Flowmeter adopts double-shell structure, its advantage is to eliminate the flowmeter cavity distortion that causes owing to the influence of external force such as pressure reduction and pipeline tension force, the metering that causes is inaccurate. and help the maintenance and the maintenance of flowmeter, when flowmeter need be repaired, as long as pull down loam cake 4, can in shell, take out metered body 1, avoid pulling down a series of troubles that flowmeter brings from pipeline.If pipeline need continue circulation,, still can continue circulating liquid as long as loam cake 4 is installed.Stretching with the shape line of the dependence cam 11 that contracts of scraper plate 7 controlled during flowmeter work, the radial end face of scraper plate 7 does not contact with the table body, but the wear-resistant block 14 that certain degree of hardness is arranged after the thermal treatment is equipped with in the lower surface of scraper plate 7, improving serviceable life. two ends of rotor 8 have the high-precision rolling bearing 12 of band O-ring seal, can bear very high rotating speed, and the good dust-proof effect is arranged.
Claims (3)
1. cockscomb flowmeter, comprise metered body (1), shell (2), bearing (3), loam cake (4) and big character wheel counter (5), it is characterized in that: be provided with several scraper plates (7) in the described metered body (1) being symmetrically distributed and being connected with main shaft (6), and to be provided with main shaft (6) be the cylinder type rotor (8) at center, the outer end of scraper plate (7) is run through the groove bar that leaves on rotor (8) wall and can radially be stretched back and forth, the roller (10) of the inner end of scraper plate (7) by having roller bearing (9) contacts with cam (11) on being fixed on main shaft (6), and rotor (8) two ends link to each other with the bearing (12) at main shaft two ends.
2. cockscomb flowmeter according to claim 1 is characterized in that: described rotor (8) is provided with support roller (13) with the surface of contact of scraper plate (7) lower end.
3. cockscomb flowmeter according to claim 1 is characterized in that: the lower surface of described scraper plate (7) is provided with wear-resistant block (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200382622U CN201053886Y (en) | 2007-06-14 | 2007-06-14 | Metal scrape plate flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200382622U CN201053886Y (en) | 2007-06-14 | 2007-06-14 | Metal scrape plate flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201053886Y true CN201053886Y (en) | 2008-04-30 |
Family
ID=39393549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200382622U Expired - Fee Related CN201053886Y (en) | 2007-06-14 | 2007-06-14 | Metal scrape plate flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201053886Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721442A (en) * | 2011-03-31 | 2012-10-10 | 宝鸡市泰源石油设备有限责任公司 | Liquid capacity type metal scraper flowmeter |
| CN104236658A (en) * | 2014-09-10 | 2014-12-24 | 合肥精大仪表股份有限公司 | Inner cam type scraping plate flow meter |
-
2007
- 2007-06-14 CN CNU2007200382622U patent/CN201053886Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721442A (en) * | 2011-03-31 | 2012-10-10 | 宝鸡市泰源石油设备有限责任公司 | Liquid capacity type metal scraper flowmeter |
| CN104236658A (en) * | 2014-09-10 | 2014-12-24 | 合肥精大仪表股份有限公司 | Inner cam type scraping plate flow meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20150614 |
|
| EXPY | Termination of patent right or utility model |