CN103542896A - Large diameter gas measuring meter - Google Patents
Large diameter gas measuring meter Download PDFInfo
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- CN103542896A CN103542896A CN201310545089.5A CN201310545089A CN103542896A CN 103542896 A CN103542896 A CN 103542896A CN 201310545089 A CN201310545089 A CN 201310545089A CN 103542896 A CN103542896 A CN 103542896A
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- tube
- connecting pipe
- pressure guide
- venturi
- flow
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- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a large diameter gas measuring meter. The end portion of a flow meter is provided with a Venturi tube outer tube, the inside of the Venturi tube outer tube is provided with a Venturi tube inner tube to form a throttle body, a positive pressure guide tube and a negative pressure guide tube are arranged inside a protective pipe, the upper ends of the positive pressure guide tube and the negative pressure guide tube are fixed onto a connecting plate through a flange, the portion of the connecting plate, which is located at the rear of the protective pipe, is provided with a temperature measuring tube, pressure sensors arranged inside the negative pressure guide tube and the positive pressure guide tube and a temperature sensor arranged inside the temperature measuring tube are jointly connected with a signal processing display, and a thermal accelerometer is arranged inside the protective tube and is connected with the signal processing display. The double Venturi structure of the large diameter gas measuring meter improves the accuracy and stability of the measurement of flow-velocity fluid; when a flow is below the lower limit of a flow sensor, the gated thermal accelerometer works, the advantages of accurately measuring micro flows of a thermal acceleration sensor is fully taken advantages of, and the measuring range of an original flow meter is widened.
Description
Technical field
The invention belongs to gas dosing field, relate in particular to a kind of heavy caliber gasmetry instrument.
Background technology
As everyone knows, in large diameter pipeline during measurement gas flow, due to reasons such as bore are large, flow velocity is low, Flow Field Distribution is complicated, adopt traditional gas meter to have following problem: 1, on the installation seat of large diameter pipeline without sufficiently long straight length, difficulty is installed; 2, traditional gas meter Integral-structure type, changes difficulty after stopping up, and maintenance cost is high; 3, traditional gas meter is high to flow velocity requirement, and throttling element is easy to wear, poor stability, and measuring accuracy is low.And because the air-flow velocity in gas pipeline often occurs that too fast and excessively slow situation occurs, air-flow generally all can not be recorded by flow instrument accurately.
Summary of the invention
The object of the present invention is to provide a kind of heavy caliber gasmetry instrument, be intended to solve existing gas meter high to flow velocity requirement, throttling element is easy to wear, poor stability, measuring accuracy is low, and because the air-flow velocity in gas pipeline often occurs that too fast and excessively slow situation occurs, the problem that air-flow generally all can not be recorded by flow instrument accurately.
The present invention is achieved in that a kind of heavy caliber gasmetry instrument comprises Venturi tube outer tube, Venturi tube inner tube, protection tube, positive connecting pipe, negative connecting pipe, hot accelerometer, web joint, flange, pressure transducer, pressure transducer, signal processing display, temperature sensor, temperature survey pipe.
Venturi tube outer tube is installed in flowmeter end; Venturi tube inner tube is installed in Venturi tube outer tube and forms throttling bodies; protection tube inside is provided with positive connecting pipe and negative connecting pipe; the upper end of positive connecting pipe and negative connecting pipe is fixed on web joint by flange; temperature survey pipe is installed at the upper protection tube of web joint rear; be arranged on positive connecting pipe, negative connecting pipe is connected signal processing display jointly with pressure transducer and temperature sensor in temperature survey pipe; in protection tube inside, hot accelerometer is installed, hot accelerometer 6 is connected in signal processing display.
Further, the working end of described hot accelerometer is positioned at one of four parts of the described protection tube inwalls of distance internal diameter distance.
Further, the inside of described hot accelerometer also comprises simulating signal and the treatment circuit of sensor.
effect gathers
Throttling bodies of the present invention is double-venturi structure, has improved the precision and stability that low flow rates of fluid is measured; Connecting pipe is arranged on to protection tube inside, reduces direct wearing and tearing and the impact of fluid to connecting pipe, improve serviceable life and measuring accuracy; When flow is when flow sensor lower limit is following, the hot accelerometer work of gating, makes full use of the characteristic of hot acceleration transducer Measurement accuracy tiny flow quantity, has widened the range of former flowmeter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the gas meter of the large caliber wide scope that provides of the embodiment of the present invention;
In figure: 1, Venturi tube outer tube; 2, Venturi tube inner tube; 3, protection tube; 4, positive connecting pipe; 5, negative connecting pipe; 6, hot accelerometer; 7, web joint; 8, flange; 9, pressure transducer; 10, pressure transducer; 11, signal processing display; 12, temperature sensor; 13, temperature survey pipe.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the structure of heavy caliber gasmetry instrument of the present invention; as shown in the figure; the present invention is achieved in that a kind of heavy caliber gasmetry instrument comprises Venturi tube outer tube 1, Venturi tube inner tube 2, protection tube 3, positive connecting pipe 4, negative connecting pipe 5, hot accelerometer 6, web joint 7, flange 8, pressure transducer 9, pressure transducer 10, signal processing display 11, temperature sensor 12, temperature survey pipe 13.
Venturi tube outer tube 1 is installed in flowmeter end, in the interior installation Venturi tube of Venturi tube outer tube 1 inner tube 2, form throttling bodies, protection tube 3 inside are provided with positive connecting pipe 4 and negative connecting pipe 5, the upper end of positive connecting pipe 4 and negative connecting pipe 5 is fixed on web joint 7 by flange 8, at the upper protection tube of web joint 73 rears, temperature survey pipe 13 is installed, be arranged on positive connecting pipe 4, pressure transducer 9 in negative connecting pipe 5 and temperature survey pipe 13, 10 and the common signal processing display 11 that connects of temperature sensor 12, in protection tube 3 inside, hot accelerometer 6 is installed, hot accelerometer 6 is connected in signal processing display 11.
Further, the working end of described hot accelerometer 6 is positioned at one of four parts of described protection tube 3 inwalls of distance internal diameter distance.
Further, the inside of described hot accelerometer 6 also comprises simulating signal and the treatment circuit of sensor.
During use, the throttling bodies of flowmeter is inserted into pipe interior, by web joint, flowmeter is arranged on duct wall; The signal that the gas in pipelines positive and negative connecting pipe of process and temperature survey are in control outputs to signal processing display processes and displays by pressure transducer, temperature sensor, when flow is when flow sensor lower limit is following, the hot accelerometer work of gating, make full use of the characteristic of hot acceleration transducer Measurement accuracy tiny flow quantity, widened the range of former flowmeter.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that performing creative labour can make or distortion still within protection scope of the present invention.
Claims (3)
1. a heavy caliber gasmetry instrument, it is characterized in that, described heavy caliber gasmetry instrument comprises Venturi tube outer tube, Venturi tube inner tube, protection tube, positive connecting pipe, negative connecting pipe, pressure transducer, temperature survey pipe, temperature sensor, hot accelerometer, signal processing display, web joint, flange;
Venturi tube outer tube is installed in flowmeter end; Venturi tube inner tube is installed in Venturi tube outer tube and forms throttling bodies; protection tube inside is provided with positive connecting pipe and negative connecting pipe; the upper end of positive connecting pipe and negative connecting pipe is fixed on web joint by flange; temperature survey pipe is installed at the upper protection tube of web joint rear; be arranged on positive connecting pipe, negative connecting pipe is connected signal processing display jointly with pressure transducer, temperature sensor in temperature survey pipe; in protection tube inside, hot accelerometer is installed, hot accelerometer is connected in signal processing display.
2. heavy caliber gasmetry instrument as claimed in claim 1, is characterized in that, the working end of described hot accelerometer is positioned at one of four parts of the described inner walls of distance internal diameter distance.
3. heavy caliber gasmetry instrument as claimed in claim 1, is characterized in that, the inside of described hot accelerometer also comprises simulating signal and the treatment circuit of sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545089.5A CN103542896A (en) | 2013-11-07 | 2013-11-07 | Large diameter gas measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545089.5A CN103542896A (en) | 2013-11-07 | 2013-11-07 | Large diameter gas measuring meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542896A true CN103542896A (en) | 2014-01-29 |
Family
ID=49966582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310545089.5A Pending CN103542896A (en) | 2013-11-07 | 2013-11-07 | Large diameter gas measuring meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103542896A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043448A (en) * | 2015-08-12 | 2015-11-11 | 银川融神威自动化仪表厂(有限公司) | Large-caliber middle-high velocity flow velocity meter |
| TWI817415B (en) * | 2021-08-03 | 2023-10-01 | 日商歐佛股份有限公司 | signal processing device |
| CN118376283A (en) * | 2024-06-21 | 2024-07-23 | 山东华瑞达精密仪器有限公司 | CCUS temperature pressure flow metering and adjusting device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309284A (en) * | 2000-09-09 | 2001-08-22 | 党晓民 | Design method and equipment of built-in dual-venturi fluid measurer |
| CN2669141Y (en) * | 2004-01-14 | 2005-01-05 | 北京博思达新世纪测控技术有限公司 | Pipe-measuring type flowmeter |
| US20050132801A1 (en) * | 2003-12-22 | 2005-06-23 | Sagem Sa | Thermal accelerometer with reduced sensitivity to external magnetic fields |
| CN201748937U (en) * | 2010-06-04 | 2011-02-16 | 江苏华尔威仪表线缆有限公司 | Special large-caliber gas flowmeter |
| CN102126667A (en) * | 2010-01-19 | 2011-07-20 | 中冶成工上海五冶建设有限公司 | Method for hoisting open type groove body with large volume and small rigidity |
| CN202533109U (en) * | 2012-03-23 | 2012-11-14 | 天津市胜武仪表技术有限公司 | Wide range precession vortex gas flowmeter |
-
2013
- 2013-11-07 CN CN201310545089.5A patent/CN103542896A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309284A (en) * | 2000-09-09 | 2001-08-22 | 党晓民 | Design method and equipment of built-in dual-venturi fluid measurer |
| US20050132801A1 (en) * | 2003-12-22 | 2005-06-23 | Sagem Sa | Thermal accelerometer with reduced sensitivity to external magnetic fields |
| CN2669141Y (en) * | 2004-01-14 | 2005-01-05 | 北京博思达新世纪测控技术有限公司 | Pipe-measuring type flowmeter |
| CN102126667A (en) * | 2010-01-19 | 2011-07-20 | 中冶成工上海五冶建设有限公司 | Method for hoisting open type groove body with large volume and small rigidity |
| CN201748937U (en) * | 2010-06-04 | 2011-02-16 | 江苏华尔威仪表线缆有限公司 | Special large-caliber gas flowmeter |
| CN202533109U (en) * | 2012-03-23 | 2012-11-14 | 天津市胜武仪表技术有限公司 | Wide range precession vortex gas flowmeter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043448A (en) * | 2015-08-12 | 2015-11-11 | 银川融神威自动化仪表厂(有限公司) | Large-caliber middle-high velocity flow velocity meter |
| CN105043448B (en) * | 2015-08-12 | 2017-06-16 | 银川融神威自动化仪表厂(有限公司) | High flow rate flowmeter in a kind of heavy caliber |
| TWI817415B (en) * | 2021-08-03 | 2023-10-01 | 日商歐佛股份有限公司 | signal processing device |
| CN118376283A (en) * | 2024-06-21 | 2024-07-23 | 山东华瑞达精密仪器有限公司 | CCUS temperature pressure flow metering and adjusting device |
| CN118376283B (en) * | 2024-06-21 | 2024-08-30 | 山东华瑞达精密仪器有限公司 | A CCUS temperature, pressure and flow metering and regulating device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140129 |
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| RJ01 | Rejection of invention patent application after publication |