CN2053747U - Elbow shunted vane-wheel flowmeter - Google Patents
Elbow shunted vane-wheel flowmeter Download PDFInfo
- Publication number
- CN2053747U CN2053747U CN 89204809 CN89204809U CN2053747U CN 2053747 U CN2053747 U CN 2053747U CN 89204809 CN89204809 CN 89204809 CN 89204809 U CN89204809 U CN 89204809U CN 2053747 U CN2053747 U CN 2053747U
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- CN
- China
- Prior art keywords
- pipe
- shunting
- flowmeter
- vane
- bend
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Abstract
Disclosed is an elbow shunted vane-wheel flowmeter. In the utility model, shunting is realized through pressure difference generated by an angle head which is arranged in a transferring pipe; a common small-caliber vane-wheel flowmeter (commonly called a water meter) is used to conduct liquid flow rate measurement, in particular to flow rate measurement of a large-caliber transferring pipe. The utility model has the advantages of simple structure, good measurement stability, convenient manufacture, low cost, and no additional pressure loss. The utility model is characterized in that the long circular arc wall and the short circular arc wall of a pipe angle head are respectively provided with the pipe joint head of a shunting pipe; the centre line of each of the two pipe joint heads is arranged in the shaft axis plain face of the angle head of the transferring pipe; an included angle theta between the centre line of each of the two pipe joint heads and the flange end face of the angle head of the transferring pipe ranges from 15 DEG to 75 DEG; a cutoff hole plate is arranged between the inlet and the outlet of the shunting pipe and between the inlet and the outlet of the vane-wheel flowmeter.
Description
The utility model relates to a kind of liquid flowmeter, especially relates to a kind of shunting propeller flowmeter.
People often need carry out the measurement of flow to flowing liquid (as water, wet goods material) in daily life and various production field.Because physical characteristics, flow state and the measuring condition of various liquid are not quite similar.Therefore, the liquid flowmeter that designs according to different measuring principle and measuring method is various in style.Usually adopt propeller flowmeter (being commonly called as water meter) to measure flow to the little liquid of water or oil and so on viscosity.In the ordinary course of things, the liquid of surveying all passes through propeller flowmeter.But in bigbore pipeline transportation, all by propeller flowmeter, then not only propeller flowmeter itself is made difficulty, and can produce the huge pressure loss as if fluid to be measured, consumes transmitting power.For this reason, in bigbore pipeline transportation, adopt venturi shunting tubular type propeller flowmeter.When fluid to be measured is flowed through the throat of Venturi tube,, make the throat both sides produce pressure differential because flow velocity increases, small part liquid under this pressure by the isocon propeller flowmeter of flowing through.Therefore, this shunting propeller flowmeter has simple structure, the advantage that the pressure loss is few.But the requirement of the manufacturing technology of Venturi tube is high, price is high, and produces certain additonal pressure loss in pipeline.
The purpose of this utility model is to provide a kind of cheap, simple structure, easily manufactured, the bend pipe shunting propeller flowmeter of the no additonal pressure loss that the pressure differential of utilizing liquid-transport pipe-line itself to form naturally realizes shunting.
The purpose of this utility model is achieved in that a kind of bend pipe shunting propeller flowmeter that channel bend and inter-burst are connected to the isocon of propeller flowmeter that comprises, and it is characterized in that: the pipe adapter that is respectively arranged with an isocon on the long circular arc wall of channel bend and the short circular arc wall; The isocon at propeller flowmeter two ends is connected with above-mentioned pipe adapter respectively; The center line of above-mentioned two pipe adapters is positioned at the axial line plane of channel bend, and with angle theta=15 of the end face of flange of channel bend °～75 °; Be provided with throttling orifice plate between the outlet/inlet of isocon and propeller flowmeter.
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the pipe adapter diagrammatic cross-section.
Fig. 3 is the throttling orifice plate diagrammatic cross-section.
Fig. 4 is teletransmission display structure signal of the present utility model.
Liquid-transport pipe-line can not be that straight nothing is crooked from starting point to terminal, and commutation is talked about, and certainly exists channel bend in the liquid-transport pipe-line.When flow of liquid during through these channel bends flow velocity change, form a velocity variations gradient that increases with radius of turn.On the contrary, the pressure of liquid then reduces with the growth of flow velocity.Therefore, flow of liquid produces a pressure reduction naturally when channel bend.At channel bend 5(Fig. 1) long circular arc wall 4 and short circular arc wall 6 on be respectively arranged with pipe adapter 3 and 7.Pipe adapter 3 and 7 center line are positioned at the axial line plane of channel bend 5, and with angle theta=15 of end face of flange 9 °～75 °.Isocon 1 is connected with 7 with pipe adapter 3 with nut 2 respectively with an end of 8. Pipe adapter 3 and 7 and isocon 1 and 8 between also be provided with sealing gasket 11(Fig. 2).Isocon 1 is connected with the import and export of nut 2 with propeller flowmeter 10 two ends respectively with 8 the other end.Isocon 1 or 8 and the import or export of propeller flowmeter 10 between also be provided with throttling orifice plate 12(Fig. 3).When flow of liquid produces pressure differential during through channel bend, partially liq constitutes a bypass circulation through isocon 1 and 8 under this pressure differential effect, thereby the impeller that promotes propeller flowmeter 10 carries out the metering of flow.Press the size of liquid-transport pipe-line caliber, pipe adapter 3 and 7 aperture are 1/3～1/40 of channel bend 5 calibers (being the liquid-transport pipe-line caliber), and the aperture of throttling orifice plate 12 is φ 5～80mm.
The utility model except that field mounted shown in Figure 1, can also be as shown in Figure 4 as the flowmeter of telemetering type.The impeller of propeller flowmeter 10 is with magnet or contain the rubber or the plastics manufacturing of magnetic material.Nearby be provided with magnetic induction coil 13 at propeller flowmeter 10.Magnetic induction coil 13 links to each other with XMCL-20 traffic figure display instrument 14 in being arranged on pulpit at a distance by lead.XMCL-20 traffic figure display instrument 14 comprises Z80 microcomputer, Z80CTC counter timer, 6 light-emitting diode displays and printing device, can show instantaneous delivery and accumulation Liu Liang And printout.Magnetic induction coil 13 can also link to each other with the secondary instrument that comprises shaping circuit, frequency divider, amplifier, counter, f-V change-over circuit and microampere meter in being arranged on pulpit at a distance by lead.Counter shows integrated flux, and microampere meter shows instantaneous delivery.Adopt above-mentioned teletransmission display packing, can alleviate operating personnel's work, be convenient to realize concentrating control automatically.
The utlity model has simple in structure, easily manufactured, low price, the advantage of the no additional pipeline pressure loss. Can be used for water, wet goods low-viscosity (mobile) liquid and contain the measurement of the fluid of a small amount of impurity. Its Measurement sensibility is good, and the reproducibility height is easy to install, safeguard. Adopt the teletransmission form, not only alleviate manipulation strength, and be convenient to realize centralized automatic control.
Claims (4)
1, a kind ofly comprises the bend pipe shunting propeller flowmeter that channel bend and inter-burst are connected to the isocon of propeller flowmeter, it is characterized in that: the pipe adapter that is respectively arranged with an isocon on the long circular arc wall of channel bend and the short circular arc wall; The center line of above-mentioned two pipe adapters is positioned at the axial line plane of channel bend, and with angle theta=15 of the end face of flange of channel bend °～75 °; Be provided with throttling orifice plate between the outlet/inlet of isocon and propeller flowmeter.
2, bend pipe shunting propeller flowmeter according to claim 1, the aperture that it is characterized in that described pipe adapter is 1/3～1/40 of a pipe diameter.
3, bend pipe shunting propeller flowmeter according to claim 1, the aperture that it is characterized in that described throttling orifice plate is φ 5～80mm.
4, according to claim 1,2 or 3 described bend pipe shunting propeller flowmeters, the material that it is characterized in that the propeller flowmeter impeller is magnet or rubber that contains magnetic material or plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204809 CN2053747U (en) | 1989-04-18 | 1989-04-18 | Elbow shunted vane-wheel flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204809 CN2053747U (en) | 1989-04-18 | 1989-04-18 | Elbow shunted vane-wheel flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2053747U true CN2053747U (en) | 1990-02-28 |
Family
ID=4862078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89204809 Withdrawn CN2053747U (en) | 1989-04-18 | 1989-04-18 | Elbow shunted vane-wheel flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2053747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568026A (en) * | 2015-01-28 | 2015-04-29 | 唐山现代工控技术有限公司 | Final-stage channel flow measuring method and device |
-
1989
- 1989-04-18 CN CN 89204809 patent/CN2053747U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568026A (en) * | 2015-01-28 | 2015-04-29 | 唐山现代工控技术有限公司 | Final-stage channel flow measuring method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |