CN2497283Y - Gas waist-wheel flowmeter - Google Patents
Gas waist-wheel flowmeter Download PDFInfo
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- CN2497283Y CN2497283Y CN 01253920 CN01253920U CN2497283Y CN 2497283 Y CN2497283 Y CN 2497283Y CN 01253920 CN01253920 CN 01253920 CN 01253920 U CN01253920 U CN 01253920U CN 2497283 Y CN2497283 Y CN 2497283Y
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- flowmeter
- magnet steel
- bearing
- end cap
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Abstract
The utility model discloses a gas waist-wheel flowmeter which is composed of transmission mechanisms of a flowmeter body which is fixedly connected, a flowmeter baffle, a flowmeter end cover, a waist wheel axle, etc. The inner side of the end cover is fixedly connected with a separation sleeve. The outer ring of the separation sleeve is provided with a magnetic steel base which is connected with a flowmeter propeller shaft as a whole and is provided with permanent magnet material. The through hole of the flowmeter end cover is provided with a magnetic induction mechanism which is used for inducting the change of the propeller shaft. The utility model has the characteristic of easy installation. The structure of the separation sleeve has good sealing performance. The utility model is particularly suitable for measuring combustible and explosive gas with high pressure. Simultaneously, a bearing is matched with a bearing sleeve base, which reduces the operative friction coefficient, increases the sensitivity of the flowmeter and reduces the fluid pressure loss during the operation.
Description
Technical field
The utility model belongs to a kind of volumetric flow instrument, relates in particular to a kind of gas roots flowmeter.
Background technology
Gas roots flowmeter claims Roots type flowmeter again, is applicable to the metering of rock gas, town gas and other gases.This gas roots flowmeter is directly to drive mechanical counter by the transmission shaft in the flowmeter to show the flow through flow value of flowmeter of fluid.It adopts " packing " or " rubber oil sea " to prevent that the fluid in the flowmeter is excessive.This sealing means effect is relatively poor, and after operation a period of time, seal has wearing and tearing, and particularly fluid flow runs up transmission shaft greatly, causes seal accelerated wear test, very easily causes the medium seepage, especially when the easier leakage of hydrodynamic pressure ambassador medium.When measuring media was rock gas or coal gas, the gas leakage can cause burning and blast.In addition, in order to prevent that the seepage seal from needing closely to contact with transmission shaft, the rotation of flowmeter transmission shaft is brought certain resistance, directly influence the sensitivity and the measuring accuracy of flow instrument.A patent of invention (the application number: 93112868.4) provided a kind of magnetic coupling sealed coupler that is used for flowmeter that on Dec 25th, 1993 proposed, this shaft coupling mainly is used in highly pressurised liquid and measures, therefore also be provided with graphite bushing between bearing seat and gear shaft, this structure will cause frictional resistance bigger because of graphite bushing for the less gas of flow.In addition, the wearing and tearing of graphite bearing also can influence serviceable life.
Summary of the invention
To achieve these goals, the utility model is made up of fixedly connected flowmeter body, flowmeter dividing plate and gear trains such as flowmeter end cap and waist wheel shaft, at the inboard fixedly connected spacer sleeve of end cap, the magnet steel seat that is connected one with the flowmeter transmission shaft is set on the outer ring of described spacer sleeve, it is characterized in that, on described magnet steel seat, permanent magnetic material is set, magnetic induction mechanism is set in the through hole of flowmeter end cap, by the variation of described magnetic induction mechanism induction transmission shaft delivery rate signal.
Description of drawings
Understand for the those skilled in the art that are familiar with the present technique field are had further the utility model, structure of the present utility model, feature and advantage are described below in conjunction with accompanying drawing.
Fig. 1 is the partial sectional view of the utility model first preferred embodiment;
Fig. 2 is the partial sectional view of the utility model second preferred embodiment;
Fig. 3 is the B-B ' sectional view of Fig. 2;
Fig. 4 is the partial sectional view of the utility model the 3rd preferred embodiment.
Embodiment
Fig. 1 is first embodiment of the present utility model, this flowmeter comprises flowmeter body 1, flowmeter dividing plate 3 and the flowmeter end cap 5 that is fixedly connected, be provided with one by non-magnet material in flowmeter end cap 5 inboards, the spacer sleeve of making as the 1Cr18Ni9Ti stainless steel 10, the end face of spacer sleeve 10 is close to " O " shape O-ring seal 12 in the groove of end cap 5 inboards by trip bolt 11, play sealing effectiveness.Be with the magnet steel seat 8 and the outer steel 9 that are connected in one with flowmeter transmission shaft 6 on the outer ring of spacer sleeve 10, installing bearing seat 13 in flowmeter end cap 5 through holes that link together with spacer sleeve 10, gas flow signal output shaft 15 is arranged in the bearing 14, and this output shaft 15 is connected as a single entity at a side and the interior magnet steel 19 of spacer sleeve 10.
When fluid is flowed through flowmeter, driving flowmeter body 1 interior waist wheel (rotor), transmission shaft 6, magnet steel seat 8 and outer steel 9 rotates in the lump, the tube wall of the spacer sleeve 10 that the magnetic line of force of outer steel 9 is made by non-magnet material, form magnetic coupling with interior magnet steel 19, the mode of flow output can have following several: (1) drives flow signal output shaft 15 and rotates synchronously, drives mechanical counter by signal output shaft 15 external gears (or worm screw) again and shows its flow value; (2) also can send pulse signal by the signaling gear on the signal output shaft 15, by microcomputer type flow rate calculation circuit, on-the-spot or remote instantaneous delivery and the integrated flux that shows the flowmeter fluid of flowing through; (3) can also realize computer networking by 485 interfaces.
Fig. 2 and Fig. 3 are second embodiment of the present utility model, and parts such as the magnet steel seat among Fig. 18, outer steel 9 and interior magnet steel 19 are improved.Interior magnet steel 19 is changed the structure that adopts interior magnet steel seat 25, should adopt the nonmagnetic substance structures by interior magnet steel seat 25, in this, be drilled with some holes then on the outer circumference surface of magnet steel seat 25, and the magnet steel 24 of some quantity is filled in some holes, and seal with cementing agent 23, cooperating the change of this structure, the same employing is drilled with some holes on the outer circumference surface of outer steel 21, the structure of filling some magnet steel 22 and sealing with cementing agent 23, magnet steel can adopt the magnet steel of diameter 6 * 6mm.
Fig. 4 is the 3rd embodiment of the present utility model, with structures such as the bearing seat among first embodiment, bearing, flow signal output shaft and interior magnet steel all with a magnetoelectricity element 33, substitute as sensor, directly receive the pulse signal in the outer steel 39, also be full of around magnetoelectricity element 33 within the sensor outer housing 31 among the figure and fill envelope material 34, magnetoelectricity element 33 transmits signal by lead 32.
The utlity model has characteristics easy for installation, the innovation of being convenient to old product is regenerated.The favorable sealing property of spacer sleeve structure is particularly suitable for measuring the flammable explosive gas of high pressure.Being used of bearing and bearing block set reduced the friction factor that instrument turns round simultaneously, improved flowmeter sensitivity, the pressure loss of fluid when having reduced work.In addition, the wear problem of eliminating seal of the present utility model, thus as long as flowmeter is carried out the transient equilibrium of tumbler, just can improve its rotating speed, thus flow (measurement) scope of this flowmeter enlarged.
More than all embodiment only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.
Claims (6)
1, a kind of gas roots flowmeter, form by fixedly connected flowmeter body, flowmeter dividing plate and gear trains such as flowmeter end cap and waist wheel shaft, at the inboard fixedly connected spacer sleeve of end cap, the magnet steel seat that is connected one with the flowmeter transmission shaft is set on the outer ring of described spacer sleeve, it is characterized in that, on described magnet steel seat, permanent magnetic material is set, magnetic induction mechanism is set in the through hole of flowmeter end cap, by the variation of described magnetic induction mechanism induction transmission shaft.
2, gas roots flowmeter according to claim 1 is characterized in that, described magnet steel seat and permanent magnetic material are connected as a single entity.
3, gas roots flowmeter according to claim 1 is characterized in that, is drilled with some holes at the outer circumference surface of described magnet steel seat, built-in some magnet steel, and aperture position seals with cementing agent.
According to claim 2 or 3 described gas roots flowmeters, it is characterized in that 4, described magnetic induction mechanism comprises sensor housing and sensor, in sensor housing, also be full of and fill the envelope material.
According to claim 2 or 3 described gas roots flowmeters, it is characterized in that 5, described magnetic induction mechanism comprises the flow signal output shaft that is connected as a single entity with interior magnet steel, described in magnet steel be arranged in the spacer sleeve and the corresponding position of outer steel.
6, gas roots flowmeter according to claim 5 is characterized in that, the position of stretching out described flowmeter end cap at the flow signal output shaft is provided with bearing seat and bearing, and described flow signal output shaft is arranged in the described bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253920 CN2497283Y (en) | 2001-09-28 | 2001-09-28 | Gas waist-wheel flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253920 CN2497283Y (en) | 2001-09-28 | 2001-09-28 | Gas waist-wheel flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2497283Y true CN2497283Y (en) | 2002-06-26 |
Family
ID=33663335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01253920 Expired - Fee Related CN2497283Y (en) | 2001-09-28 | 2001-09-28 | Gas waist-wheel flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2497283Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879048A (en) * | 2012-07-06 | 2013-01-16 | 合肥精大仪表股份有限公司 | Roots flowmeter |
| CN106092215A (en) * | 2016-07-21 | 2016-11-09 | 安徽天维仪表有限公司 | A kind of flow signal detecting system of anodontia train |
| CN107817030A (en) * | 2016-09-14 | 2018-03-20 | 方惠娥 | A kind of birotor positive displacement accumulated fluid meter |
| CN108303152A (en) * | 2018-01-31 | 2018-07-20 | 秦卫良 | A kind of rotz flowmeter |
-
2001
- 2001-09-28 CN CN 01253920 patent/CN2497283Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879048A (en) * | 2012-07-06 | 2013-01-16 | 合肥精大仪表股份有限公司 | Roots flowmeter |
| CN106092215A (en) * | 2016-07-21 | 2016-11-09 | 安徽天维仪表有限公司 | A kind of flow signal detecting system of anodontia train |
| CN107817030A (en) * | 2016-09-14 | 2018-03-20 | 方惠娥 | A kind of birotor positive displacement accumulated fluid meter |
| CN108303152A (en) * | 2018-01-31 | 2018-07-20 | 秦卫良 | A kind of rotz flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI ACOL GAS TESTING AND CONTROLLING EQUIPMEN Free format text: FORMER NAME OR ADDRESS: XINXING THERMAL METER CO., LTD., SHANGHAI Owner name: NO. 8, SHEN ROAD(NORTH), MINXING DISTRICT, SHANGHA Free format text: FORMER NAME OR ADDRESS: ROOM 101, NO. 38, ZHANGSHOU VILLAGE, XINZHUANG TOWN, MINXING DISTRICT, SHANGHAI CITY |
|
| CP02 | Change in the address of a patent holder |
Address after: No. 8 Shen Shen road, Shanghai, Minhang District Patentee after: Aike Gas Monitoring and Controlling Device Co., Ltd., Shanghai Address before: Room 38, Changshou village, Xhenzhuang Town, Shanghai, Minhang District, China 101 Patentee before: Shenxing Thermotechnical Meters Co Ltd |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |