CN201163202Y - Roots type flowmeter - Google Patents
Roots type flowmeter Download PDFInfo
- Publication number
- CN201163202Y CN201163202Y CNU2008200284200U CN200820028420U CN201163202Y CN 201163202 Y CN201163202 Y CN 201163202Y CN U2008200284200 U CNU2008200284200 U CN U2008200284200U CN 200820028420 U CN200820028420 U CN 200820028420U CN 201163202 Y CN201163202 Y CN 201163202Y
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- China
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- magnet steel
- counter
- assembly
- alnico
- type flowmeter
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Abstract
The utility model relates to a Roots type flowmeter, which comprises a meter, a counter and an integrating instrument component, wherein the meter comprises a sealing meter case, a rotor component, a synchronizing gear and a measuring alnico component; the measuring alnico component comprises an alnico shaft and a driving alnico; the counter comprises a counter cover, a counter component and a counting alnico component; the counting alnico component comprises a connecting shaft, a driven alnico and an intermediate alnico; the meter case is provided with a driven alnico hole and an inwards sunken seal cover; and the integrating instrument component comprises a flow sensor and an integrating instrument. The Roots type flowmeter solves the technical problems that the prior Roots type flowmeter causes frequent inaccurate measuring and easy leakage of gas and is easy to influence by outside environment; moreover, the Roots type flowmeter has the advantages of high precision, excellent repeatability, less starting flow, large rangeability, low power consumption, long service life and compact structure, etc.
Description
Technical field
The utility model relates to a kind of instrument of accurate measurement gas flow.
Background technology
Roots type flowmeter is based on the positive displacement measuring principle, is used for the flow through instrument of gas gross of closed conduct of accurate measurement.But existing Roots type flowmeter is because the reason on the structural design, is easy to generate that metering is inaccurate, gas is revealed easily, technical matters such as big is affected by the external environment.
Summary of the invention
The purpose of this utility model is to propose a kind of Roots type flowmeter, and it has solved existing Roots type flowmeter and has been easy to generate that metering is inaccurate, big technical matters is revealed, is affected by the external environment to gas easily.
Technical solution of the present utility model is:
A kind of Roots type flowmeter, described Roots type flowmeter comprise gauging table, counter and integrating instrument assembly; Its special character is that described gauging table comprises sealing watchcase 13 and is arranged on rotor assembly 16, the synchromesh gear 12 in the watchcase 13 and measures the magnet steel assembly; The active magnet steel 20 that described metering magnet steel assembly comprises magnet steel axle 43 and is arranged on magnet steel axle 43 1 ends; Described rotor assembly 16 drives magnet steel axle 43 and initiatively magnet steel 20 rotations by synchromesh gear 12; Described counter comprises and is arranged on the counter cover 27 on watchcase 13 1 end faces and is arranged on counter assembly 28, counting magnet steel assembly in the counter cover 27; The middle magnet steel 31 that described counting magnet steel assembly comprises coupling shaft 30, is arranged on the passive magnet steel 40 of coupling shaft 30 1 ends and is arranged on the coupling shaft middle part, the input shaft of the other end of described coupling shaft 30 and counter assembly 28 is connected; Described watchcase 13 is provided with passive magnet steel hole 14 and indent seal closure 44, and the passive magnet steel 40 of described coupling shaft 30 ends stretches in the indent seal closure 44 from passive magnet steel hole 14 and carries out magnetic with active magnet steel 20 and is connected; Described integrating instrument assembly comprises flow sensor 22 that is arranged in the counter cover 27 and the integrating instrument 26 that is arranged on outside the counter cover 27, described flow sensor 22 can carry out magnetic with middle magnet steel 31 and be connected, and connects by cable between described flow sensor 22 and the integrating instrument 26.
Above-mentioned Roots type flowmeter also comprises temperature sensor assembly 17, described temperature sensor assembly 17 comprises connecting link 42, be arranged on the temperature sensor 11 of connecting link 42 1 ends, be arranged on the sensor circuit 41 of connecting link 42 the other end, described connecting link 42 is arranged on the watchcase 13 between the gauging table sum counter, its end that is provided with temperature sensor 11 stretches in the gas flow 15 in the rotor assembly 16, its end that is provided with sensor circuit 41 is arranged in the counter cover 27, is connected by cable between described sensor circuit 41 and the integrating instrument 26.
The advantage that the utlity model has is:
Roots type flowmeter is the instrument of accurate measurement gas flow, based on the positive displacement measuring principle, adopt advanced singlechip technology and little power consumption new and high technology, be used for the flow through gas gross of closed conduct of accurate measurement, flowmeter is made up of Roots's flow sensing part and intelligent volume correcting part, be flow, pressure, the incorporate intelligent volumetric displacement meter of temperature, have degree of accuracy height, good reproducibility, an advantage such as the initiating flow is little, rangeability is big, low in energy consumption, life-span length, compact conformation.The utility model carries out flow rate conversion owing to adopted magnetic to connect, and adds the excellent sealing of indent seal closure, has guaranteed the degree of accuracy height of flow rate conversion, good seal performance.
Description of drawings
Fig. 1 is the structural representation of the utility model Roots type flowmeter;
Fig. 2 is the structural representation of Roots type flowmeter rotor assembly;
Wherein: 11-temperature sensor, 12-synchromesh gear, 13-watchcase, the passive magnet steel of 14-hole, the 15-gas flow, 16-rotor assembly, 17-temperature sensor assembly, 20-is magnet steel initiatively, 22-flow sensor, 26-integrating instrument, 27-counter cover, 28-counter assembly, 30-coupling shaft, magnet steel in the middle of the 31-, the passive magnet steel of 40-, 41-sensor circuit, the 42-connecting link, 43-magnet steel axle, 44-indent seal closure.
Embodiment
The utility model Roots type flowmeter comprises gauging table, counter, temperature sensor assembly and integrating instrument assembly; Gauging table comprises the sealing watchcase and is arranged on watchcase interior rotor assembly, synchromesh gear and metering magnet steel assembly; The active magnet steel that metering magnet steel assembly comprises the magnet steel axle and is arranged on magnet steel axle one end; Rotor assembly drives magnet steel axle and initiatively magnet steel rotation by synchromesh gear; Counter comprises and is arranged on the counter cover on watchcase one end face and is arranged on counter assembly, counting magnet steel assembly in the counter cover; The middle magnet steel that counting magnet steel assembly comprises coupling shaft, is arranged on the passive magnet steel of coupling shaft one end and is arranged on the coupling shaft middle part, the other end of coupling shaft and the input shaft of counter assembly are connected; Watchcase is provided with passive magnet steel hole and indent seal closure, and the passive magnet steel of coupling shaft end stretches in the indent seal closure from passive magnet steel hole and carries out magnetic with the active magnet steel and is connected; The integrating instrument assembly comprises the flow sensor integrating instrument outer with being arranged on the counter cover that is arranged in the counter cover, and flow sensor can carry out magnetic with middle magnet steel and be connected, and connects by cable between flow sensor and the integrating instrument; Temperature sensor assembly comprises connecting link, be arranged on the temperature sensor of connecting link one end, be arranged on the sensor circuit of connecting link the other end, connecting link is arranged on the watchcase between the gauging table sum counter, its end that is provided with temperature sensor stretches in the interior gas flow of rotor assembly, its end that is provided with sensor circuit is arranged in the counter cover, is connected by cable between sensor circuit and the integrating instrument.
During the utility model work, gas is sent through gas flow through behind the rotor assembly from gas flow again, gas rotates through out-of-date drive rotor assembly from rotor assembly, rotor assembly drives synchromesh gear and rotates, synchromesh gear drives the magnet steel axle and rotates, the magnet steel axle drives initiatively, and magnet steel rotates, the moving passive magnet steel of active magnetic steel band rotates, passive magnet steel drives coupling shaft and rotates, magnet steel sum counter assembly rotated simultaneously in the middle of coupling shaft drove, the moving flow sensor of intermediate magnetic steel band carries out the electronics metering, and counter assembly carries out the machinery metering.The temperature of temperature sensor synchronization monitoring gas, the gained temperature value is used for the correction of gas volume.
Claims (2)
1, a kind of Roots type flowmeter, described Roots type flowmeter comprise gauging table, counter and integrating instrument assembly; It is characterized in that: described gauging table comprises sealing watchcase (13) and is arranged on rotor assembly (16), the synchromesh gear (12) in the watchcase (13) and measures the magnet steel assembly; The active magnet steel (20) that described metering magnet steel assembly comprises magnet steel axle (43) and is arranged on magnet steel axle (43) one ends; Described rotor assembly (16) drives magnet steel axle (43) and initiatively magnet steel (20) rotation by synchromesh gear (12); Described counter comprises and is arranged on the counter cover (27) on watchcase (13) one end faces and is arranged on counter assembly (28), counting magnet steel assembly in the counter cover (27); The middle magnet steel (31) that described counting magnet steel assembly comprises coupling shaft (30), is arranged on the passive magnet steel (40) of coupling shaft (30) one ends and is arranged on coupling shaft (30) middle part, the input shaft of the other end of described coupling shaft (30) and counter assembly (28) is connected; Described watchcase (13) is provided with passive magnet steel hole (14) and indent seal closure (44), and the passive magnet steel (40) of described coupling shaft (30) end stretches in the indent seal closure (44) from passive magnet steel hole (14) and carries out magnetic with active magnet steel (20) and is connected; Described integrating instrument assembly comprises and is arranged on the flow sensor (22) in the counter cover (27) and is arranged on counter cover (27) integrating instrument (26) outward, described flow sensor (22) can carry out magnetic with middle magnet steel (31) and be connected, and connects by cable between described flow sensor (22) and the integrating instrument (26).
2, Roots type flowmeter according to claim 1, it is characterized in that: it also comprises temperature sensor assembly (17), described temperature sensor assembly (17) comprises connecting link (42), be arranged on the temperature sensor (11) of connecting link (42) one ends, be arranged on the sensor circuit (41) of connecting link (42) the other end, described connecting link (42) is arranged on the watchcase (13) between the gauging table sum counter, its end that is provided with temperature sensor (11) stretches in the interior gas flow (15) of rotor assembly (16), its end that is provided with sensor circuit (41) is arranged in the counter cover (27), is connected by cable between described sensor circuit (41) and the integrating instrument (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200284200U CN201163202Y (en) | 2008-02-29 | 2008-02-29 | Roots type flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200284200U CN201163202Y (en) | 2008-02-29 | 2008-02-29 | Roots type flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163202Y true CN201163202Y (en) | 2008-12-10 |
Family
ID=40184137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200284200U Expired - Lifetime CN201163202Y (en) | 2008-02-29 | 2008-02-29 | Roots type flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201163202Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538893A (en) * | 2010-12-15 | 2012-07-04 | 陕西航天动力高科技股份有限公司 | Mechanical electronic dual-display roots flowmeter |
| CN107607167A (en) * | 2017-07-05 | 2018-01-19 | 上海埃科燃气测控设备有限公司 | The built-in multi-faceted gas roots flowmeter of temperature and pressure compensation |
| CN113654608A (en) * | 2021-08-31 | 2021-11-16 | 浙江裕顺仪表有限公司 | Anti-vibration double-helix Roots wheel gas Roots flowmeter with temperature and pressure compensation |
| CN113677961A (en) * | 2019-01-08 | 2021-11-19 | 罗美特有限公司 | Magnetic sensor assembly for rotary gas meter |
| CN114777865A (en) * | 2021-12-13 | 2022-07-22 | 浙江裕顺仪表有限公司 | Roots flow metering device for industrial gas prepayment |
-
2008
- 2008-02-29 CN CNU2008200284200U patent/CN201163202Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538893A (en) * | 2010-12-15 | 2012-07-04 | 陕西航天动力高科技股份有限公司 | Mechanical electronic dual-display roots flowmeter |
| CN107607167A (en) * | 2017-07-05 | 2018-01-19 | 上海埃科燃气测控设备有限公司 | The built-in multi-faceted gas roots flowmeter of temperature and pressure compensation |
| CN113677961A (en) * | 2019-01-08 | 2021-11-19 | 罗美特有限公司 | Magnetic sensor assembly for rotary gas meter |
| CN113654608A (en) * | 2021-08-31 | 2021-11-16 | 浙江裕顺仪表有限公司 | Anti-vibration double-helix Roots wheel gas Roots flowmeter with temperature and pressure compensation |
| CN114777865A (en) * | 2021-12-13 | 2022-07-22 | 浙江裕顺仪表有限公司 | Roots flow metering device for industrial gas prepayment |
| CN114777865B (en) * | 2021-12-13 | 2023-01-31 | 浙江裕顺仪表有限公司 | Roots flow metering device for industrial gas prepayment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081210 |