CN204007725U - A kind of density revision type multiparameter gas flow meter - Google Patents
A kind of density revision type multiparameter gas flow meter Download PDFInfo
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- CN204007725U CN204007725U CN201420310978.3U CN201420310978U CN204007725U CN 204007725 U CN204007725 U CN 204007725U CN 201420310978 U CN201420310978 U CN 201420310978U CN 204007725 U CN204007725 U CN 204007725U
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Abstract
The utility model discloses a kind of density revision type multiparameter gas flow meter, in the middle of comprising, be the instrument housing of pipeline through hole, flow sensor fixed mount, fixing rack for sensor and concentration sensor are installed on described instrument housing; On wherein said flow sensor fixed mount, flow sensor and differential pressure transmitter are installed, and make the measuring junction of described flow sensor be positioned at the middle pipeline through hole of instrument housing; Flow sensor probe is installed on described flow sensor, pressure transducer, temperature sensor and flow integrator are installed on described fixing rack for sensor, and the measuring junction of described pressure transducer, temperature sensor is laid respectively in the middle pipeline through hole of instrument housing; The measuring junction of described concentration sensor is also positioned at the pipeline through hole in the middle of instrument housing; The utlity model has and install that simple and convenient, multiparameter metering, crushing are little, density revision, feature that measuring accuracy is high, practical.
Description
Technical field
The utility model relates to a kind of gas flow meter, particularly a kind of density revision type multiparameter gas flow meter.
Background technology
Gas (coal-seam gas) is a kind of and unconventional gas resources coal symbiotic co-existence, and coal-mine gas is harmful source that coal mine issues soft coal and Gas Outburst and gas explosion accident.In addition, gas environmental pollution especially severe, the greenhouse effect of its principal ingredient CH4 are 26 times of CO2, are 7 times of CO2 to the destruction of ozonosphere, as can be seen here, coal-mine gas is mineral resources, has again certain harmfulness.
Exploit and utilize coal-mine gas can realize coal and two kinds of resource securities of coal-mine gas are developed efficiently, fundamentally eliminating the disasters such as the coal that causes in seam mining and Gas Outburst, gas explosion, in the time of protection life security, can obtain clean energy resource again.In October, 2011 16 National Development and Reform Commission, national security supervision general bureau, National Energy Board, national colliery Work Safety Supervision Bureau have organized to set up < < coal mine gas drainage temporary provisions > > up to standard, coal mining enterprise must set up a whole set of gas pumping monitoring system, to coal-mine gas, to carry out " first take out afterwards adopt, the comprehensive regulation ", strengthening and standard coal mine gas drainage, realize coal mine gas drainage up to standard.
Coal mine gas drainage and utilization have become a kind of inevitable, yet, because coal mine gas drainage environment is harsh, there is high negative pressure, high humility, solid impurity is many, flow range is large, low discharge is low, at present, flowmeter for coal mine gas drainage mainly contains orifice flowmeter, precession spiral flowmeter, V vertebra flowmeter, gas drainage multi-parameter, severally above all can not be applicable to coal mine gas drainage environment completely, certain defect of existence more or less all: orifice flowmeter is traditional flowmeter, flow range is little, crushing is large, install inconvenient, precession spiral flowmeter is mainly used in gas drainage branch pipe(tube), be used for holing easily stifled, excessive for house steward's crushing, V cone flow meter, crushing is large, there is certain hidden danger, exit gradually gas pumping measuring instrument ranks, gas drainage multi-parameter, measuring accuracy is low, uncertain high, do not pass through the demarcation of standard set-up, do not belong to flowmeter.Existing gas extraction metering device in use, only gas total amount is measured, gas density is not revised, methane gas principal ingredient is methane gas, different coal mine environments have different methane concentrations, and the prolongation along with the extraction time, methane concentration declines to some extent, the calculating of gas utilization rate and the judgement to gas pumping situation, when stop gas pumping and the outfit of the resources such as extraction human and material resources is all depended on to the assessment to gas scale, therefore the gas flow meter that, has a density revision type seems particularly important.
Utility model content
The purpose of this utility model is to provide a kind of density revision type multiparameter gas flow meter, for the present situation of gas pumping metering and the limitation of existing flowmeter, the utility model is to gas flow, temperature, pressure, concentration monitor time, make gas density participate in computing, gas density is revised, thereby realized the metering of gas scale; Have install that simple and convenient, multiparameter metering, crushing are little, density revision, feature that measuring accuracy is high, practical.
For achieving the above object, the technical solution of the utility model is:
A density revision type multiparameter gas flow meter, comprises the middle instrument housing that is pipeline through hole, and flow sensor fixed mount, fixing rack for sensor and concentration sensor are installed on described instrument housing; On wherein said flow sensor fixed mount, flow sensor and differential pressure transmitter are installed, and make the measuring junction of described flow sensor be positioned at the middle pipeline through hole of instrument housing; Flow sensor probe is installed on described flow sensor, pressure transducer, temperature sensor and flow integrator are installed on described fixing rack for sensor, and the measuring junction of described pressure transducer, temperature sensor is laid respectively in the middle pipeline through hole of instrument housing; The measuring junction of described concentration sensor is also positioned at the pipeline through hole in the middle of instrument housing; Described flow sensor probe is connected with flow sensor by signal wire, and described flow sensor is connected with differential pressure transmitter by signal wire; Described differential pressure transmitter is connected with flow integrator by signal wire; Described flow integrator is connected with pressure transducer, temperature sensor and concentration sensor respectively by signal wire.
The beneficial effects of the utility model are: a kind of density revision type multiparameter gas flow meter of the present utility model, four kinds of sensors and flow integrator are installed on same instrument housing, adopt integrative installation technology, install simple and conveniently, realized multiparameter metering.Particularly flow sensor adopts plug-in type to install, and easy for installation, crushing is little, is applicable to heavy caliber extraction pipeline, has solved the excessive problem of extraction supervisor's crushing.Flow sensor probe directly inserts duct bottom, by whole fluid cross-section, can accurately obtain the mean value of fluid velocity profile, accurately reflects real flow velocity and flow information.Next a kind of density revision type multiparameter gas flow of the present utility model is taken into account its density revision method flow, pressure, temperature, concentration is measured simultaneously, realize density revision, can directly obtain gas scale, do not needed staff to convert again, and measuring accuracy is high, practical.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of density revision type multiparameter gas flow meter of the present embodiment, as shown in Figure 1, is the instrument housing 1 of pipeline through hole in the middle of comprising, described instrument housing 1 is equivalent to pipeline straight length, by flange and pipeline, formed, be mainly used in carrying various sensors, and be connected with gas drainage pipeline.Flow sensor fixed mount 2, fixing rack for sensor 3 and concentration sensor 4 are installed on described instrument housing 1; Flow sensor 5 and differential pressure transmitter 9 are installed on wherein said flow sensor fixed mount 2, and the measuring junction that makes described flow sensor 5 is positioned at the pipeline through hole in the middle of instrument housing 1, it adopts plug-in type to connect, directly insert instrument housing 1 to duct bottom, make flow sensor probe through whole fluid cross-section, can obtain the mean value of fluid velocity profile, reflect real flow rate information; Flow sensor probe 10 is installed on described flow sensor 5, flow sensor 10 cross sections of popping one's head in adopt bullet shapes, through whole fluid cross-section, can obtain the mean value of fluid velocity profile, reflect real flow rate information, fluid, through described flow sensor probe 10, produces small pressure differential before and after it; Described differential pressure transmitter 9 obtains the described flow sensor differential pressure signal that 10 places produce of popping one's head in, and converts flow signal to, passes to described flow integrator 8.Pressure transducer 6, temperature sensor 7 and flow integrator 8 are installed on described fixing rack for sensor 3, and the measuring junction of described pressure transducer 6, temperature sensor 7 is laid respectively in the middle pipeline through hole of instrument housing 1; The pressure signal of the gas passing through in described pressure transducer 6 acquisition instrument housings 1, passes to described flow integrator 8.The temperature signal of the gas passing through in described temperature sensor 7 acquisition instrument housings 1, passes to described flow integrator 8.The measuring junction of described concentration sensor 4 is also positioned at the pipeline through hole in the middle of instrument housing 1; The concentration signal of the gas passing through in described concentration sensor 4 acquisition instrument housings 1, passes to described flow integrator 8, and participates in computing, participates in computing realize the correction to the pure flow of gas by concentration.Described flow sensor probe 10 is connected with flow sensor 5 by signal wire, and described flow sensor 5 is connected with differential pressure transmitter 9 by signal wire; Described differential pressure transmitter 9 is connected with flow integrator 8 by signal wire; Described flow integrator 8 is connected with pressure transducer 6, temperature sensor 7 and concentration sensor 4 respectively by signal wire.The flow signal that described 8 pairs of described flow sensors 5 of flow integrator transmit, pressure signal with pressure transducer 6 transmission, the temperature signal that temperature sensor 7 transmits, the concentration signal that concentration sensor 4 transmits is processed, union, draw total flow and the pure flow value of gas under operating mode (duty) and mark condition (status of criterion), be presented on the display screen on flow integrator 8, can long-rangely carry simultaneously, by RS-485 or 200-1000HZ Frequency Transfer to downhole monitoring substation, thereby the methane monitoring system of being delivered to.
The density revision method of a kind of density revision type multiparameter gas flow meter of the present embodiment, comprise the steps: that first-selection will be provided with flow sensor 5, pressure transducer 6, temperature sensor 7, concentration sensor 4, the instrument housing 1 of flow integrator 8 is arranged on gas drainage pipeline by flange, while then drawing out methane by instrument housing, above four kinds of sensors gather respectively flow signal, pressure signal, temperature signal, concentration signal, be sent to flow integrator 8, the interior hardware and software program of flow integrator 8 completes the calculation process to above four kinds of signals, output mixed traffic (operating mode, mark condition), gas scale (operating mode, mark condition) pressure, temperature, mix total amount (operating mode, mark condition), pure total amount (the operating mode of gas, mark condition), by to the detection of gas density and participate in computing, realize the correction of the pure flow of gas, the pure total amount of gas scale and gas is gas flow and gas total amount through density revision, above output signal, is directly presented on the display screen on flow integrator 8, can long-rangely be transported to downhole monitoring substation simultaneously, and ground monitoring system.
A kind of density revision type multiparameter gas flow meter of the present embodiment, is installed in four kinds of sensors and flow integrator on same instrument housing, adopts integrative installation technology, installs simply, convenient, has realized multiparameter metering.Particularly flow sensor adopts plug-in type to install, and easy for installation, crushing is little, is applicable to heavy caliber extraction pipeline, has solved the excessive problem of extraction supervisor's crushing.Flow sensor probe directly inserts duct bottom, by whole fluid cross-section, can accurately obtain the mean value of fluid velocity profile, accurately reflects real flow velocity and flow information.A kind of density revision type multiparameter gas flow of next the present embodiment is taken into account its density revision method flow, pressure, temperature, concentration is measured simultaneously, realize density revision, can directly obtain gas scale, do not needed staff to convert again, and measuring accuracy is high, practical.
Claims (1)
1. a density revision type multiparameter gas flow meter, the instrument housing (1) that is pipeline through hole in the middle of comprising, is characterized in that: flow sensor fixed mount (2), fixing rack for sensor (3) and concentration sensor (4) are installed on described instrument housing (1); Flow sensor (5) and differential pressure transmitter (9) are installed on wherein said flow sensor fixed mount (2), and make the measuring junction of described flow sensor (5) be positioned at the middle pipeline through hole of instrument housing (1); Flow sensor probe (10) is installed on described flow sensor (5), pressure transducer (6), temperature sensor (7) and flow integrator (8) are installed on described fixing rack for sensor (3), and the measuring junction of described pressure transducer (6), temperature sensor (7) is laid respectively in the middle pipeline through hole of instrument housing (1); The measuring junction of described concentration sensor (4) is also positioned at the pipeline through hole in the middle of instrument housing (1); Described flow sensor probe (10) is connected with flow sensor (5) by signal wire, and described flow sensor (5) is connected with differential pressure transmitter (9) by signal wire; Described differential pressure transmitter (9) is connected with flow integrator (8) by signal wire; Described flow integrator (8) is connected with pressure transducer (6), temperature sensor (7) and concentration sensor (4) respectively by signal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310978.3U CN204007725U (en) | 2014-06-12 | 2014-06-12 | A kind of density revision type multiparameter gas flow meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310978.3U CN204007725U (en) | 2014-06-12 | 2014-06-12 | A kind of density revision type multiparameter gas flow meter |
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| CN204007725U true CN204007725U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420310978.3U Expired - Fee Related CN204007725U (en) | 2014-06-12 | 2014-06-12 | A kind of density revision type multiparameter gas flow meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034372A (en) * | 2014-06-12 | 2014-09-10 | 杭州冠一流体技术有限公司 | Density correction type multi-parameter flowmeter and density correction method |
| CN104729637B (en) * | 2015-02-03 | 2018-04-27 | 浙江工业大学 | A kind of turbine flowmeter on-line calibration system and calibration method |
-
2014
- 2014-06-12 CN CN201420310978.3U patent/CN204007725U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034372A (en) * | 2014-06-12 | 2014-09-10 | 杭州冠一流体技术有限公司 | Density correction type multi-parameter flowmeter and density correction method |
| CN104729637B (en) * | 2015-02-03 | 2018-04-27 | 浙江工业大学 | A kind of turbine flowmeter on-line calibration system and calibration method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20190612 |