CN2639857Y - Wide range flow control device - Google Patents

Wide range flow control device Download PDF

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Publication number
CN2639857Y
CN2639857Y CN 03210125 CN03210125U CN2639857Y CN 2639857 Y CN2639857 Y CN 2639857Y CN 03210125 CN03210125 CN 03210125 CN 03210125 U CN03210125 U CN 03210125U CN 2639857 Y CN2639857 Y CN 2639857Y
Authority
CN
China
Prior art keywords
flow meter
pipe
auxiliary
main
auxilliary
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
Application number
CN 03210125
Other languages
Chinese (zh)
Inventor
陈爱民
陈开云
叶朋
潘友艺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI TIANXIN INSTRUMENT CO Ltd
Original Assignee
SHANGHAI TIANXIN INSTRUMENT CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANGHAI TIANXIN INSTRUMENT CO Ltd filed Critical SHANGHAI TIANXIN INSTRUMENT CO Ltd
Priority to CN 03210125 priority Critical patent/CN2639857Y/en
Application granted granted Critical
Publication of CN2639857Y publication Critical patent/CN2639857Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a wide range flow control device, which comprises a control valve, a flow meter and a pipe, and is characterized in that: the lower end of the inlet header is connected in parallel with a main pipe, which is provided with a main flow meter and a main control valve, and an auxiliary pipe. The control output end of the main flow meter is connected with the main control valve. The auxiliary pipe is provided with an auxiliary flow meter and an auxiliary control valve. The control output end of the auxiliary flow meter is connected with the auxiliary control valve. The main flow meter is connected with the auxiliary flow meter by a communication control lead, and the lower ends of the main pipe and the auxiliary pipe are connected in parallel with the outlet header. The utility model, by which the technical difficulty of the flow metering field that the small flow in a large caliber pipe is not measured or inaccurately measured is solved, has the advantages of wide flow range, promoted measuring accuracy, high automatic degree, compact conformation and convenient installation and maintenance.

Description

A kind of wide-range volume control device
Technical field
The utility model relates to a kind of volume control device, particularly a kind of wide-range volume control device.
Background technology
In the flow metering field; run into the fluid that needs metering through regular meeting and have in a big way fluctuations in discharge; when giving a residential quarter air feed; at noon; usefulness gas peak period and other low-valley intervals in night; all need to be measured accurately; yet present flow instrument is because technology limitation such as sensors; can't reach the range ability of broad; therefore; the occasion that the range ability of broad is arranged at ask for something; if use vortex shedding flow meter; the precession vortex flowmeter; turbo flow meter; orifice flowmeter etc.; then can't satisfy the needs of range, if the flowmeter of wide ranges such as use Roots type flowmeter, because medium; the reason of service conditions such as pressure can not satisfy application; even satisfy the large capacity meter amount, but the inaccurate even non-metering problem of metering can appear when low discharge.
Summary of the invention
The purpose of this utility model has provided a kind of wide-range volume control device, by the flowmeter of employing different flow scope and the interlocked control and the combination of valve, solved flowmeter has the applications of the range ability of broad to exist at ask for something the inaccurate even non-metering difficult problem of low discharge metering, as the flowmeter of two different bores that are similarly tens times of ranges by interlocked control and combination, can reach hundreds of times even thousands of times of range ratios, improve range ability greatly, thereby also improved the accuracy of metering.The utility model designs a kind of wide-range volume control device, comprise operation valve, flowmeter, pipeline, it is characterized in that: enter the header lower end and be connected to be responsible for and auxilliary pipe, the person in charge is provided with main flow meter and main control valve, the control output end of main flow meter links to each other with main control valve, auxilliary pipe is provided with auxilliary flowmeter and auxilliary operation valve, the control output end of auxilliary flowmeter links to each other with auxilliary operation valve, be connected with the Control on Communication lead between main flow meter and auxilliary flowmeter, be responsible for and the lower end of auxilliary pipe is connected to out header.The utility model has the advantages that flow range is wide, the automaticity height, compact conformation, convenient for installation and maintenance.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated,
Accompanying drawing is a structural representation of the present utility model,
Embodiment,
Comprise operation valve 5,7, flowmeter 4,6, pipeline 1,2,3 among the figure, it is characterized in that: enter header 1 lower end and be connected to the person in charge 2 and auxilliary pipe 3, be responsible for 2 and be provided with main flow meter 4 and main control valve 5, the control output end of main flow meter 4 links to each other with main control valve 5, auxilliary pipe 3 is provided with auxilliary flowmeter 6 and auxilliary operation valve 7, the control output end of auxilliary flowmeter 6 links to each other with auxilliary operation valve 7,6 in main flow meter 4 and auxilliary flowmeter are connected with Control on Communication lead 8, be responsible for 2 and the lower end of auxilliary pipe 3 be connected to out header 9.When flow is lower than the lower limit flow threshold of main flow meter or be higher than the upper limit flow threshold of auxilliary flowmeter, this flowmeter can automatically switch, to satisfy the needs of range, improve the accuracy of metering, thereby solved low discharge amount of disregarding or the inaccurate technical barrier of metering in the large diameter pipeline of flow metering field.

Claims (1)

1, a kind of wide-range volume control device, comprise operation valve, flowmeter, pipeline, it is characterized in that: enter the header lower end and be connected to be responsible for and auxilliary pipe, the person in charge is provided with main flow meter and main control valve, the control output end of main flow meter links to each other with main control valve, and auxilliary pipe is provided with auxilliary flowmeter and auxilliary operation valve, and the control output end of auxilliary flowmeter links to each other with auxilliary operation valve, be connected with the Control on Communication lead between main flow meter and auxilliary flowmeter, be responsible for and the lower end of auxilliary pipe is connected to out header.
CN 03210125 2003-08-28 2003-08-28 Wide range flow control device Expired - Fee Related CN2639857Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03210125 CN2639857Y (en) 2003-08-28 2003-08-28 Wide range flow control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03210125 CN2639857Y (en) 2003-08-28 2003-08-28 Wide range flow control device

Publications (1)

Publication Number Publication Date
CN2639857Y true CN2639857Y (en) 2004-09-08

Family

ID=34289260

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03210125 Expired - Fee Related CN2639857Y (en) 2003-08-28 2003-08-28 Wide range flow control device

Country Status (1)

Country Link
CN (1) CN2639857Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547378A (en) * 2016-02-28 2016-05-04 山东省水利科学研究院 Agricultural irrigation water meter capable of preventing sediment blockage and weed winding
CN105973307A (en) * 2016-06-22 2016-09-28 中国农业科学院农业资源与农业区划研究所 Polder farmland non-point source pollution main water process monitoring device and method
CN110318720A (en) * 2019-07-19 2019-10-11 西安思坦仪器股份有限公司 A kind of wide range orifice flowmeter injection well downhole flow regulator
US10863667B2 (en) 2015-09-28 2020-12-15 Precision Planting Llc Systems and devices for controlling and monitoring liquid applications of agricultural fields

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10863667B2 (en) 2015-09-28 2020-12-15 Precision Planting Llc Systems and devices for controlling and monitoring liquid applications of agricultural fields
US11337366B2 (en) 2015-09-28 2022-05-24 Precision Planting Llc Systems and devices for controlling and monitoring liquid applications of agricultural fields
US11350562B2 (en) 2015-09-28 2022-06-07 Precision Planting Llc Systems and devices for controlling and monitoring liquid applications of agricultural fields
CN105547378A (en) * 2016-02-28 2016-05-04 山东省水利科学研究院 Agricultural irrigation water meter capable of preventing sediment blockage and weed winding
CN105973307A (en) * 2016-06-22 2016-09-28 中国农业科学院农业资源与农业区划研究所 Polder farmland non-point source pollution main water process monitoring device and method
CN110318720A (en) * 2019-07-19 2019-10-11 西安思坦仪器股份有限公司 A kind of wide range orifice flowmeter injection well downhole flow regulator
CN110318720B (en) * 2019-07-19 2024-04-30 西安思坦仪器股份有限公司 Water distributor of wide-range orifice plate flowmeter

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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