CN2643289Y - Built-in gas flowmeter - Google Patents
Built-in gas flowmeter Download PDFInfo
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- CN2643289Y CN2643289Y CN 03246671 CN03246671U CN2643289Y CN 2643289 Y CN2643289 Y CN 2643289Y CN 03246671 CN03246671 CN 03246671 CN 03246671 U CN03246671 U CN 03246671U CN 2643289 Y CN2643289 Y CN 2643289Y
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- flowmeter
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Abstract
The utility model relates to a gas flowmeter, in particular to a gas Roots flowmeter and a gas turbine flowmeter. The inside of the flowmeter is provided with a sensor used to collect the temperature compensation and pressure compensation signals. The signal transmission cables of the temperature compensation and pressure compensation sensor are positioned inside the flowmeter body,and the signals of the temperature compensation and the pressure compensation are directly sent to the digital display connected with the flowmeter. The utility model has the advantages that the gas flowmeter not only resolves the factors that the components are not safe and is easy to be weathered and damaged in the background technology, but also effectively shields the interference of the signals of the external magnetic field and so on, which strengthens the anti-interference capability greatly, ensures, the reliability and the accuracy, reassures the users and the gas management departments so as to resolve the technical difficulty that is not resolved by the background technology all the time with a continuous flowmeter service life of 2-3 times of the prior flowmeter existing in the background technology.
Description
Technical field:
The utility model relates to a kind of gas meter, and particularly a kind of gas roots flowmeter and gas turbine meter belong to gas meter and manufacture the field.
Background technology:
Well-known all gas, the density that comprises rock gas and town gas all are to change along with the variation of its pressure and temperature.According to this physical characteristics; want to measure accurately the flow of its pipeline of flowing through; metering especially for trade settlement; protect consumers and producers both sides' interests; just must be when measuring flow value the temperature and pressure value of measuring media; by calculating real flow value-" status of criterion flow " of MEDIA FLOW, be called for short mark condition flow through pipeline.Gas roots flowmeter of Xiao Shouing and gas turbine meter are revised " status of criterion flow " of (compensation) automatically though realized temperature, pressure in the technical scheme design in the market.But on the structure and method of temperature, pressure compensation transmission, what adopt is to set up pressure tappings, temperature-measuring port in the flowmeter shell outside, by pressure transducer (or transmitter), temperature sensor (or transmitter), Explosion proof joint, explosion-proof sleeve pipe, cable the electric signal that records is flowed to Displaying Meter again.By the computing of the inner single chip microcomputer that is provided with of Displaying Meter, demonstrate mark condition flow, the temperature of gas, the pressure of the gas of the flowmeter of flowing through.Gas roots flowmeter and gas turbine meter as the production of the emerging thermal meter of Shanghai shen company limited.Its weak point is: the one, and pressure tappings, temperature-measuring port, pressure transducer, temperature sensor, explosion-proof head, explosion-proof sleeve pipe, cable etc. are installed in the outside of flowmeter shell, the easy aged deterioration of parts not only, and easily damaged by other people, bring many unsafe factors to the user, deeply worry about to this user with gas management department; The 2nd, because pressure tappings, temperature-measuring port, pressure transducer, temperature sensor, explosion-proof head, explosion-proof sleeve pipe, cable etc. are installed in the outside of flowmeter shell, can't shield the interference of other signals such as external magnetic field effectively, its poor anti jamming capability, institute's transmission signals is after being subjected to extraneous strong wireless signal and magnetic interference, its reliability and accuracy can't guarantee, not achieve a solution as yet so far; The 3rd, volume is big, not only the user install and use inconvenience, and producer's packing, transportation are extremely inconvenient; The 4th, parts are many, and not only manufacturing cost is big, and directly have influence on the overall technology performance and the presentation quality of product.
Summary of the invention:
Purpose of design: pressure tappings, temperature-measuring port, pressure transducer, temperature sensor, explosion-proof head, explosion-proof sleeve pipe, cable etc. are installed in the inside of flowmeter shell, to avoid the weak point in the background technology.Design proposal: to achieve these goals, in the parts such as cover cap of the utility model by rotor, flow sender mechanism, flowmeter dividing plate, flowmeter end cap and flowmeter in the body of forming flowmeter (housing), the body several passages are set, the pressure transducer (or pressure unit) and the temperature sensor (or temperature transmitter) of thread connection hole and respective threaded interface is set in the external port of passage.By the flow through pressure and temperature value of flowmeter body medium of measurement, to the measured medium flow carry out pressure, temperature correction, compensation, show its mark condition flow (Nm
3).These components and parts all are arranged on the inside of flowmeter, and its flow, pressure and temperature signal directly send the microcomputer type digital indicator that is connected as a single entity with the flowmeter cover cap in flowmeter cover cap inside to by connecting lead.Its technical scheme: 1. built-in gas meter, background technology is gas roots flowmeter or gas turbine meter, be provided with the sensor that is used for temperature compensation and pressure compensation signal in the body, the signal transmssion line of compensation temperature and compensating-pressure transducer is positioned at body and directly is delivered to the digital indicator that is communicated with the body inner chamber.Its temperature pressure compensation transmission method, background technology as mentioned above, the transmission of the sampling of the temperature of gas medium, pressure and signal all is positioned at the inside of gas meter in the gas meter.2. built-in gas meter, background technology is gas roots flowmeter or gas turbine meter, be provided with the sensor that is used for the collecting temperature compensating signal in the body, the signal transmssion line of temperature compensation sensor is positioned at body and directly is delivered to the digital indicator that is communicated with the body inner chamber.Its temperature compensation transmission method, background technology as mentioned above, the sampling of the gas temperature in the gas meter, transmission all are positioned at the inside of gas meter.3. built-in gas meter, background technology is gas roots flowmeter or gas turbine meter, be provided with the sensor that is used to gather pressure signal in the body, the signal transmssion line of pressure transducer is positioned at body and directly is delivered to the digital indicator that is communicated with the body inner chamber.Its pressure compensation transmission method, background technology as mentioned above, the sampling of the gaseous tension in the gas meter, transmission all are positioned at the inside of gas meter.4. built-in gas meter, background technology is gas roots flowmeter or gas turbine meter, the pressure transducer that is provided with temperature sensor, pressure signal transmission air film mouth, pressure signal sample tap in the body and is complementary with the pressure signal sample tap, the signal transmssion line of pressure transducer and temperature sensor are positioned at body and directly are delivered to the digital indicator that is communicated with body.Pressure signal transmission air film mouth is built-in with air film.
The utility model is compared with background technology, the one, because with the pressure tappings in the background technology, temperature-measuring port, pressure transducer, temperature sensor, explosion-proof head, explosion-proof sleeve pipe, cables etc. are installed in the inside of flowmeter body, not only solved external easy the wearing out of parts that background technology exists, fragile, uneasy congruent factor, and shielded the interference of signals such as external magnetic field effectively, its antijamming capability strengthens greatly, the reliability and the accuracy of signal transmission have been guaranteed, make the user and feel more relieved with gas management department, solved the still unsolved always technical barrier of background technology, the 2nd, volume dwindles greatly, not only producer packs, convenient transportation, and the installing and using of the user that is more convenient for; The 3rd, technical scheme is science more, and parts significantly reduce, reliability strengthens greatly, manufacturing cost reduces greatly, and be 2～3 times of background technology the continuous serviceable life that overall technology quality that the more important thing is product has reached non-maintaining level, its complete machine.
Description of drawings:
Fig. 1 is the partial sectional view of first kind of embodiment of the utility model.
Fig. 2 is the B-B cross sectional view of Fig. 1.
Fig. 3 is the partial sectional view of second kind of embodiment of the utility model.
Fig. 4 is the partial sectional view of the third embodiment of the utility model.
Fig. 5 is the partial sectional view of the 4th kind of embodiment of the utility model.
Fig. 6 is the partial sectional view of the 5th kind of embodiment of the utility model.
Embodiment:
Embodiment 1: with reference to accompanying drawing 1 and Fig. 2.What Fig. 1 and Fig. 2 related to is gas roots flowmeter.This flowmeter comprises the flowmeter body 2 that is fixedly connected, flowmeter dividing plate 3, flowmeter end cap 4 and flowmeter cover cap 9, in flowmeter end cap side except that the magnetically inductive cross-flow signal output mechanism 6 of existing patented technology (01253920.1) record, the passage 11 that two band O shapes are enclosed 12 seals also is set in its appropriate location, the other end at passage 11 is provided with threaded seal, difference setting pressure sensor (or pressure unit) 5 and temperature sensor (or temperature transmitter) 8, flow signal, pressure signal and temperature signal directly flow to the microcomputer type digital indicator 10 that is connected as a single entity with cover cap 9 by lead 7 respectively in the flow cover cap (also can be designed to the signal is far passed output, handle, reading).The pressure transducer that body internal rotor and the coaxial dividing plate that links to each other of flow sensor are provided with temperature sensor, pressure signal sample tap and are complementary with the pressure signal sample tap.Body 2 comprises end cap 4 and cover cap 9, and digital indicator is the single-chip microcomputer digital indicator.The pressure transducer that body internal rotor and the coaxial dividing plate that links to each other of flow sensor are provided with temperature sensor, pressure signal sample tap and are complementary with the pressure signal sample tap.
Its principle of work: when fluid is flowed through flowmeter, drive rotation work together such as body inner rotor shaft 1 gear train such as grade, by magnetically inductive cross-flow signal output mechanism 6 delivery rate signals.The actual pressure and the temperature value of while pressure, temperature sensor measurement fluid, output stream is through pressure, the temperature signal of fluid, flow to the microprocessor of display 10 inside by lead 7, by microprocessor the data of flow, pressure, temperature signal are advanced processing, computing, again according to the various functions of microprocessor, show or teletransmission shows mark condition flow value, temperature, pressure value and standard signal output, RS485 computer networking, FEEDBACK CONTROL of the flowmeter fluid of flowing through or the like.
Embodiment 2: with reference to accompanying drawing 3.Built-in gas meter, background technology is gas roots flowmeter or gas turbine meter, be provided with the pressure transducer 5 that is used for temperature sensor 8, pressure signal transmission air film mouth 13, pressure signal sample tap 14 and is complementary with the pressure signal sample tap in the body, the signal transmssion line 7 of pressure transducer and temperature sensor is positioned at body and directly is delivered to the digital indicator 10 that is communicated with body.The pressure of gas medium acts on pressure and transmits on the air film mouth 13, and the air film stress deformation that is positioned on the air film mouth directly acts on incompressible oil, and oily then the power of doing is at the sensor that is positioned at the pressure transducer sample tap, the purpose of realization pressure samples.
Embodiment 3: with reference to accompanying drawing 4.Mainly be used on gas-turbine and other gas meter.Pressure among the embodiment 1, temperature sensor (transmitter) and flow sensor setting are installed in the wall cover cap 9 outward of flowmeter body 2 passages, accept the flow signal that impeller or other flow sender mechanism send by flow sensor, the pressure and temperature value of pressure, temperature sensor measurement fluid simultaneously reaches the same purpose of embodiment 1.
Embodiment 4: with reference to accompanying drawing 5.Built-in gas meter, background technology is gas roots flowmeter and gas turbine meter, be provided with the sensor 8 that is used to gather the compensation temperature signal in the body, the signal transmssion line of compensation temperature sensor is positioned at body and directly is delivered to the digital indicator 9 that is communicated with body.The temperature compensation transmission method of its built-in gas meter, background technology as mentioned above, the sampling of the gas temperature in the gas meter, transmission all are positioned at the inside of gas meter.
Embodiment 5: with reference to accompanying drawing 6.Built-in gas meter, background technology is gas roots flowmeter and gas turbine meter, be provided with the sensor that is used to gather pressure signal in the body, the signal transmssion line of pressure transducer is positioned at body and directly is delivered to the digital indicator that is communicated with body.The pressure compensation transmission method of its built-in gas meter, background technology as mentioned above, the sampling of the gas compensatory pressure in the gas meter, transmission all are positioned at the inside of gas meter.
Embodiment 6: the pressure transducer 5 that body internal rotor and the coaxial dividing plate that links to each other of flow sensor are provided with temperature sensor, pressure signal sample tap 14 and are complementary with the pressure signal sample tap.
Embodiment 7: passage among Fig. 1 11 is reformed: store in not considering flowmeter end cap 4 under the situation in the flow of lubricant inbound traffics meter body, can cancel passage 11 and sealing O shape circle 12 among Fig. 1.
What should be understood that is: though 1. the utility model adopts the mode of the foregoing description to have been described in detail.Be used for restriction of the present utility model but these embodiment are illustrative, any changes and improvements that do not exceed in the utility model connotation scope all fall into protection domain of the present utility model.2. the structure and the parts that do not relate to of embodiment 1～7 all are prior art, are not described herein at this.
Claims (3)
1, a kind of built-in gas meter, background technology is gas roots flowmeter or gas turbine meter, it is characterized in that: be provided with the sensor that is used to gather compensation temperature and compensatory pressure signal in the body, the signal transmssion line of temperature compensation and pressure compensation sensor is positioned at body and directly is delivered to the digital indicator that is communicated with body.
2, built-in gas meter according to claim 1 is characterized in that: the pressure transducer that the coaxial dividing plate that links to each other of axle of body internal rotor and flow sensor is provided with temperature sensor, pressure signal sample tap and is complementary with the pressure signal sample tap.
3, built-in gas meter according to claim 1, it is characterized in that: body comprises end cap and cover cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246671 CN2643289Y (en) | 2003-04-20 | 2003-04-20 | Built-in gas flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246671 CN2643289Y (en) | 2003-04-20 | 2003-04-20 | Built-in gas flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2643289Y true CN2643289Y (en) | 2004-09-22 |
Family
ID=34292633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03246671 Expired - Fee Related CN2643289Y (en) | 2003-04-20 | 2003-04-20 | Built-in gas flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2643289Y (en) |
-
2003
- 2003-04-20 CN CN 03246671 patent/CN2643289Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |