CN101750117A - High-pressure gas metering device - Google Patents
High-pressure gas metering device Download PDFInfo
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- CN101750117A CN101750117A CN 201010118369 CN201010118369A CN101750117A CN 101750117 A CN101750117 A CN 101750117A CN 201010118369 CN201010118369 CN 201010118369 CN 201010118369 A CN201010118369 A CN 201010118369A CN 101750117 A CN101750117 A CN 101750117A
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Abstract
The invention relates to a high-pressure gas metering device which comprises a stressed element, a force transmitting element, a sensor, a signal processing and display device and a pipe connection component, wherein the force transmitting element is formed by a first permanent magnet and a second permanent magnet; the sensor is connected with the signal processing and display device; the pipe connection component is provided with a high-pressure gas outlet end and a high-pressure gas inlet end and an axial fluid passage limited between the outlet end and the inlet end; the sensor and the second permanent magnet are connected and installed in a sealed chamber in the fluid passage of the pipe connection component; a honeycomb duct expanding component with an axial overflowing hole is fixedly installed in the fluid passage at the back part of the sealed chamber; the stressed element is a piston which is in slide fit in the axial overflowing hole of the honeycomb duct expanding component and can axially move; the first permanent magnet is fixedly installed on the front end face of the piston; and the two permanent magnets are opposite to each other in the fluid flow direction. The invention adopts a piston type stressed element matched with the honeycomb duct expanding component, overcomes the defects of low flow rate, large pulsation and strong impact, and can be widely applied to the metering and monitoring of high-pressure gas and fluid under various conditions.
Description
Technical field
[0001] the present invention relates to a kind of metering device of meter fluid flow, be meant a kind of high-pressure gas metering device especially.
Background technology
Gases at high pressure flow meter of the prior art is made of a force-summing element (comprising the differential pressure type element), a spring, a sensor and a signal Processing and display device usually, when fluid flows in measured pipeline, fluid produces an acting force or pressure to force-summing element, this acting force or pressure pass to sensor by the respective force-transfer parts, and by the signal Processing that is connected with sensor and display device with the fluid flow information calculations and show.The fluid force of above-mentioned flowmeter conducts to sensor by force-summing element and force transmission element, since flow sensor must with the isolated condition of measured medium under the high pressure operating mode carried out low discharge measure, traditional structure can't guarantee the transmission of force signal, and then precision, scope, reliability and the security of influence measurement.
Under condition of high voltage, transmit the shortcoming of fluid force by traditional structure at above-mentioned momentum flowmeter, a kind of momentum flowmeter based on magnetic thrust is provided in the application for a patent for invention of publication number CN101398318A, comprise force-summing element, force transmission element, sensor, signal Processing and display device, described force transmission element is made up of first permanent magnet and second permanent magnet.When fluid flows, force-summing element is produced an acting force in measured pipeline; Force-summing element and the effect lower slider of first permanent magnet that is attached thereto at this acting force change the distance between first permanent magnet and second permanent magnet, thereby magnetic thrust or magnetic field intensity between the two are changed; Change accordingly with this magnetic thrust or change of magnetic field strength with the sensor output signal generation that second permanent magnet closely links to each other; The variable quantity of sensor output calculates and shows through signal Processing and display device.This invention adopts pair of permanent magnets to replace elastic component as force transmission element, has improved stability and the reliability and the corrosion resistance of sensor, has prolonged serviceable life.But, between the force-summing element of above-mentioned a kind of momentum flowmeter based on magnetic thrust and the measured pipeline to cross fluid space be that the flow channels area is fixed, be difficult to satisfy the low discharge of working pressure 50Mpa (or more than), the metering of low flow velocity; Especially under condition of high voltage as the oil field high pressure gas injection, measuring apparatus is difficult to satisfy flow range and the low discharge metering more than 50 times, and gas compressor can produce strong pulsating flow, gases at high pressure device work under bad environment, be difficult to satisfy the zero point stability of flowmeter sensor, also be difficult under low flow velocity, big pulsation, thump condition of high voltage, keep reliability and stability, more can't satisfy measurement in a big way.
Summary of the invention
Fundamental purpose of the present invention is to overcome the shortcoming of prior art, a kind of high-pressure gas metering device is provided, overcome the difficult point of low flow velocity under the condition of high voltage, big pulsation, thump, can be widely used in gases at high pressure metering and monitoring under the various conditions, also highly pressurised liquid flow metering can be used in a large number, and the low flow velocity metering under the condition of high voltage can be applied to.
Purpose of the present invention is achieved through the following technical solutions:
High-pressure gas metering device comprises force transmission element, sensor and signal Processing that links to each other with sensor and display device that force-summing element, first, second permanent magnet constitute; It is characterized in that: also comprise the tube joint assembly that has pressurized gas inlet end, endpiece and be defined in axial fluid passage between inlet end, the endpiece; Described sensor, second permanent magnet are connected together in the fluid passage that is installed in tube joint assembly in the gas-tight silo; Be fixed with the mozzle extension element of tape spool in the fluid passage at described gas-tight silo rear portion to flowing hole; Described force-summing element is for being slidingly fitted in axially displaceable piston in the axial flowing hole of mozzle extension element, and first permanent magnet is packed on the front end face of piston; First, second permanent magnet is corresponding on fluid flow direction.
Aforementioned high-pressure gas metering device, its first, second permanent magnet correspondence are located on the axis of fluid passage and homopolarity is arranged in opposite directions.
Aforementioned high-pressure gas metering device, its mozzle extension element comprises that mainly one has the water conservancy diversion sleeve pipe of described axial flowing hole, symmetry is offered the diversion trench that a pair of above and axial flowing hole connects on the inwall of water conservancy diversion sleeve pipe, the diversion trench axial cross section is at right angles trapezoidal, and its anterior area of passage longshore current body inflow direction increases gradually.
Aforementioned high-pressure gas metering device, the inlet end of its water conservancy diversion sleeve pipe are provided with and prevent that piston breaks away from the positive stop of axial flowing hole, offer the head piece of crossing of a plurality of axial perforations on this positive stop.
Aforementioned high-pressure gas metering device, its tube joint assembly comprise the two ends pipe joint body of socket overcurrent head respectively, and the two ends of this pipe joint body are arranged with into and out of interface, into and out of interface difference socket front end, rear end overcurrent head; Be provided with between described front end, the rear end overcurrent head one with the integrated longitudinal baffle of pipe joint body, the central part of this longitudinal baffle is provided with the described gas-tight silo that is used for device sensor, second permanent magnet; Offer one flowing hole on the longitudinal baffle around the described gas-tight silo.
Aforementioned high-pressure gas metering device is equiped with the back pressure stabilising arrangement in the endpiece flow channels of its tube joint assembly, and this back pressure stabilising arrangement comprises the overcurrent sleeve pipe that fits snugly in the flow channels and is engaged in the non-return retaining valve of back pressure in the overcurrent sleeve pipe.
A kind of gases at high pressure flow-measuring method comprises force transmission element, sensor and signal Processing that links to each other with sensor and display device that force-summing element, first, second permanent magnet constitute; Have pressurized gas inlet end, endpiece and be defined in the tube joint assembly of axial fluid passage between inlet end, the endpiece; Described sensor, second permanent magnet are connected together in the fluid passage that is installed in tube joint assembly in the gas-tight silo; Be fixed with the mozzle extension element of tape spool in the fluid passage at described gas-tight silo rear portion to flowing hole; Described force-summing element is for being slidingly fitted in axially displaceable piston in the axial flowing hole of mozzle extension element, and first permanent magnet is packed on the front end face of piston; Its method of work is:
When 1) fluid flowed in measured pipeline, fluid produced an acting force by the axial flowing hole of mozzle extension element to piston;
2) fluid force overcomes the magnetic repulsion between first, second permanent magnet, promote the axial flowing hole slip of the piston and first permanent magnet along the mozzle extension element, relative displacement takes place between first, second permanent magnet, make the magnetic flux or the magnetic thrust generation respective change that act on sensor, sensor goes out this variable quantity and is sent to signal Processing and display device through signal wire, shows and record through signal Processing and display device.
Aforementioned flow-measuring method, its mozzle extension element comprises that mainly one has the water conservancy diversion sleeve pipe of described axial flowing hole, symmetry is offered the diversion trench that a pair of above and axial flowing hole connects on the inwall of water conservancy diversion sleeve pipe, the diversion trench axial cross section is at right angles trapezoidal, and its anterior area of passage longshore current body inflow direction increases gradually.
Aforementioned flow-measuring method is equiped with the back pressure stabilising arrangement in the endpiece flow channels of its tube joint assembly, and this back pressure stabilising arrangement comprises the overcurrent sleeve pipe that fits snugly in the flow channels and is engaged in the non-return retaining valve of back pressure in the overcurrent sleeve pipe.
Aforementioned flow-measuring method, its first, second permanent magnet correspondence are located on the axis of fluid passage and homopolarity is arranged in opposite directions.
By the above-mentioned description of this invention as can be known, compared with prior art, high-pressure gas metering device of the present invention has following advantage: force-summing element adopts and is slidingly fitted in the piston of water conservancy diversion quill in flowing hole, permanent magnet is fixed on the front end face of piston, act on fluid on the piston through the expanded type diversion trench is flowed forward, the area of passage of expanded type diversion trench is according to change in fluid pressure, hydrodynamic pressure is big more, the acting force that promptly promotes piston is big more, amount of piston displacement is also big more, the also corresponding expansion of the circulation area of expanded type diversion trench.The momentum that utilizes in the medium motion to be possessed promotes piston, impel first, second permanent magnet generation relative displacement, cause acting on the magnetic flux or the magnetic thrust generation respective change of sensor, the sensor that links to each other with second permanent magnet exports measured variable quantity to signal Processing and display device by signal wire, and variable quantity becomes certain proportionate relationship with the size of fluid flow.Force-summing element adopts the slidingtype piston, has solved the force-summing element radial wobble of bringing because of pulsating flow, improves its stressed stability; The measuring method of extend type, the difficulty of low discharge and big flow range metering under the solution high pressure, with 50Mpa, DN40 is an example, and minimum flow can be surveyed 20Nm3/h, and maximum can promptly reach 100-150 doubly to 3000Nm3/h.The increase of the non-return retaining valve of back pressure is reducing the reverse impact that high-pressure pulsating stream brings, and the stable flow field; Overcome the difficult point of low flow velocity, big pulsation, thump under the condition of high voltage, can be widely used in gases at high pressure metering and monitoring under the various conditions, also can be used for highly pressurised liquid flow metering in a large number, and can be applied to the low flow velocity metering under the condition of high voltage.
Description of drawings
Fig. 1 is a structure cut-open view of the present invention.
Fig. 2 is the structural representation of the mozzle extension element among Fig. 1.
Fig. 3 is the right view of Fig. 2.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
With reference to figure l.High-pressure gas metering device mainly comprises force transmission element, signal Processing and display device (not shown) and mozzle extension element that tube joint assembly 1, force-summing element, sensor 3, first, second permanent magnet 41,42 constitute.
Tube joint assembly 1 comprises the two ends pipe joint body 11 of socket overcurrent head respectively, and the axial cross section of this pipe joint body 11 is the shape of falling H substantially, and its two ends are arranged with into and out of interface, distinguishes socket front end overcurrent head 12, rear end overcurrent head 13 on interface; Be provided with in the main body flow channels between front end overcurrent head 12, the rear end overcurrent head 13 and with pipe joint body 11 integrated longitudinal baffles 14, the central part of this longitudinal baffle 14 is provided with gas-tight silo.Offer the flowing hole 140 of a plurality of axial perforations on the longitudinal baffle around the gas-tight silo.For reducing reverse impact and the stable flow field that high-pressure pulsating stream brings, be equiped with the back pressure stabilising arrangement in the flow channels of the rear end of tube joint assembly overcurrent head 13, this back pressure stabilising arrangement comprises the overcurrent sleeve pipe 15 that fits snugly in the flow channels and is engaged in the non-return retaining valve 151 of back pressure in the overcurrent sleeve pipe 15.
Be equiped with the mozzle extension element in the fluid passage at midfeather 14 rear portions, this mozzle extension element comprises that mainly one has axial flowing hole 50 described water conservancy diversion sleeve pipes 5, water conservancy diversion quill symmetry on the inwall of flowing hole 50 is offered two pairs of diversion trenchs 51 that connect with axial flowing hole 50, diversion trench 51 axial cross sections are at right angles trapezoidal, and its anterior area of passage longshore current body inflow direction increases gradually.
Above-mentioned force-summing element is the cylindric piston 2 that is slidingly fitted in the axial flowing hole 50 of mozzle, but piston 2 axially the moving forward and backward of longshore current body passage under the effect of gases at high pressure.First permanent magnet 41 on the front end face of piston 2.The inlet end of water conservancy diversion sleeve pipe 5 is provided with and prevents that piston 2 breaks away from the positive stop 52 of axial flowing hole, offers a plurality of axial head pieces 520 of crossing on this positive stop 52.The rear portion of piston 2 is provided with hollow bulb, to alleviate the own wt of piston 2, reduces sliding resistance, improves detection sensitivity.
The sensor 3 and second permanent magnet 42 are connected together device in the gas-tight silo of above-mentioned longitudinal baffle 14.First permanent magnet 41, second permanent magnet, 42 correspondences are located on the axis of fluid passage, and two permanent magnets, 41,42 homopolarities arrange to have magnetic repulsion each other in opposite directions.Sensor 3 connects signal Processing and display device by signal wire 31.
With reference to Fig. 1, returning apparatus has pressure transducer 6 on front end overcurrent head 12, is used for detecting in real time the pressure of gases at high pressure.
Tube joint assembly 1 is serially connected in the tested gases at high pressure pipeline by front end overcurrent head 12, rear end overcurrent head 13, when gases at high pressure flow in measured pipeline, gases at high pressure enter the water conservancy diversion quill to flowing hole 50 by front end overcurrent head 12 flow channels through the axial head piece 520 of crossing of positive stop, and enter rear end overcurrent head 13 flow channels by diversion trench 51, longitudinal baffle flowing hole 140 successively, enter tested gases at high pressure pipeline by overcurrent sleeve pipe 15 at last and flow forward.Enter the water conservancy diversion quill and overcome first because of its momentum principle produces one to piston 2 to the gases at high pressure of flowing hole 50, second permanent magnet 41, the axial force of 42 magnetic repulsion, the piston 2 that promotion is fixed together and first permanent magnet 41 slide vertically, the distance that makes first permanent magnet 41 and be fixed between the interior sensor 3 of gas-tight silo changes, promptly corresponding the variation takes place in magnetic flux between first permanent magnet 41 and second permanent magnet 42 or magnetic thrust, the sensor 3 that links to each other with second permanent magnet 42 exports measured variable quantity to signal Processing and display device by signal wire 31, signal Processing and display device are calculated and are shown, and variable quantity becomes certain proportionate relationship with the size of fluid flow.When gases at high pressure stopped to carry, the non-return retaining valve 151 of back pressure reduced the reverse impact that high-pressure pulsating stream brings under reverse back pressure effect and close automatically, and the protection high-pressure gas metering device is the safety of sensor 3 particularly.
Above-mentioned high-pressure gas metering device, the singularity of utilizing permanent magnet to have, be N, exist the basic characteristics of homopolar-repulsion and the magnetic line of force to the peculiar penetrability of non-magnetic conduction object between the S utmost point, but longshore current body passage piston 2 in axial sliding overcomes permanent magnet 41 under the effect of fluid, the homopolarity magnetic repulsion that is had between 42, make first permanent magnet 41 and sensor 3 that relative displacement take place, respective change take place with gases at high pressure flow difference in magnetic flux or magnetic thrust by sensor 3, sensor 3 transfers to signal Processing and display device with the variable quantity of magnetic flux or magnetic thrust by signal wire 31, is converted into data on flows and shows after signal Processing and display device computing.
Above-mentioned only is two embodiments of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the change of unsubstantiality is carried out in invention, all should belong to the behavior of invading the invention protection domain.
Claims (10)
1. high-pressure gas metering device comprises force transmission element, sensor and signal Processing that links to each other with sensor and display device that force-summing element, first, second permanent magnet constitute; It is characterized in that: also comprise the tube joint assembly that has pressurized gas inlet end, endpiece and be defined in axial fluid passage between inlet end, the endpiece; Described sensor, second permanent magnet are connected together in the fluid passage that is installed in tube joint assembly in the gas-tight silo; Be fixed with the mozzle extension element of tape spool in the fluid passage at described gas-tight silo rear portion to flowing hole; Described force-summing element is for being slidingly fitted in axially displaceable piston in the axial flowing hole of mozzle extension element, and first permanent magnet is packed on the front end face of piston; First, second permanent magnet is corresponding on fluid flow direction.
2. high-pressure gas metering device according to claim 1 is characterized in that: described first, second permanent magnet correspondence is located on the axis of fluid passage and homopolarity is arranged in opposite directions.
3. high-pressure gas metering device according to claim 1, it is characterized in that: described mozzle extension element comprises that mainly one has the water conservancy diversion sleeve pipe of described axial flowing hole, symmetry is offered the diversion trench that a pair of above and axial flowing hole connects on the inwall of water conservancy diversion sleeve pipe, the diversion trench axial cross section is at right angles trapezoidal, and its anterior area of passage longshore current body inflow direction increases gradually.
4. high-pressure gas metering device according to claim 3 is characterized in that: the inlet end of described water conservancy diversion sleeve pipe is provided with and prevents that piston breaks away from the positive stop of axial flowing hole, offers the head piece of crossing of a plurality of axial perforations on this positive stop.
5. high-pressure gas metering device according to claim 1, it is characterized in that: described tube joint assembly comprises the two ends pipe joint body of socket overcurrent head respectively, the two ends of this pipe joint body are arranged with into and out of interface, into and out of interface difference socket front end, rear end overcurrent head; Be provided with between described front end, the rear end overcurrent head one with the integrated longitudinal baffle of pipe joint body, the central part of this longitudinal baffle is provided with the described gas-tight silo that is used for device sensor, second permanent magnet; Offer one flowing hole on the longitudinal baffle around the described gas-tight silo.
6. high-pressure gas metering device according to claim 1, it is characterized in that: be equiped with the back pressure stabilising arrangement in the endpiece flow channels of described tube joint assembly, this back pressure stabilising arrangement comprises the overcurrent sleeve pipe that fits snugly in the flow channels and is engaged in the non-return retaining valve of back pressure in the overcurrent sleeve pipe.
7. a gases at high pressure flow-measuring method comprises force transmission element, sensor and signal Processing that links to each other with sensor and display device that force-summing element, first, second permanent magnet constitute; Have pressurized gas inlet end, endpiece and be defined in the tube joint assembly of axial fluid passage between inlet end, the endpiece; Described sensor, second permanent magnet are connected together in the fluid passage that is installed in tube joint assembly in the gas-tight silo; Be fixed with the mozzle extension element of tape spool in the fluid passage at described gas-tight silo rear portion to flowing hole; Described force-summing element is for being slidingly fitted in axially displaceable piston in the axial flowing hole of mozzle extension element, and first permanent magnet is packed on the front end face of piston; Its method of work is:
When 1) fluid flowed in measured pipeline, fluid produced an acting force by the axial flowing hole of mozzle extension element to piston;
2) fluid force overcomes the magnetic repulsion between first, second permanent magnet, promote the axial flowing hole slip of the piston and first permanent magnet along the mozzle extension element, relative displacement takes place between first, second permanent magnet, make the magnetic flux or the magnetic thrust generation respective change that act on sensor, sensor goes out this variable quantity and is sent to signal Processing and display device through signal wire, shows and record through signal Processing and display device.
8. flow-measuring method according to claim 7, it is characterized in that: described mozzle extension element comprises that mainly one has the water conservancy diversion sleeve pipe of described axial flowing hole, symmetry is offered the diversion trench that a pair of above and axial flowing hole connects on the inwall of water conservancy diversion sleeve pipe, the diversion trench axial cross section is at right angles trapezoidal, and its anterior area of passage longshore current body inflow direction increases gradually.
9. flow-measuring method according to claim 7, it is characterized in that: be equiped with the back pressure stabilising arrangement in the endpiece flow channels of described tube joint assembly, this back pressure stabilising arrangement comprises the overcurrent sleeve pipe that fits snugly in the flow channels and is engaged in the non-return retaining valve of back pressure in the overcurrent sleeve pipe.
10. according to claim 7 or 8 described flow-measuring methods, it is characterized in that: described first, second permanent magnet correspondence is located on the axis of fluid passage and homopolarity is arranged in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101183694A CN101750117B (en) | 2010-03-05 | 2010-03-05 | High-pressure gas metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101183694A CN101750117B (en) | 2010-03-05 | 2010-03-05 | High-pressure gas metering device |
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| CN101750117A true CN101750117A (en) | 2010-06-23 |
| CN101750117B CN101750117B (en) | 2011-08-10 |
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| CN2010101183694A Expired - Fee Related CN101750117B (en) | 2010-03-05 | 2010-03-05 | High-pressure gas metering device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033488A (en) * | 2020-08-19 | 2020-12-04 | 重庆市山城燃气设备有限公司 | Natural gas meter with composite adjusting function and control method thereof |
| CN113324607A (en) * | 2021-05-27 | 2021-08-31 | 浙江工业大学 | Two-dimensional piston type dynamic flow meter |
| CN114920199A (en) * | 2021-12-30 | 2022-08-19 | 北京恒合信业技术股份有限公司 | Magnetic induction type flow sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112033488A (en) * | 2020-08-19 | 2020-12-04 | 重庆市山城燃气设备有限公司 | Natural gas meter with composite adjusting function and control method thereof |
| CN112033488B (en) * | 2020-08-19 | 2023-06-02 | 重庆市山城燃气设备有限公司 | Natural gas meter with composite regulation function and control method thereof |
| CN113324607A (en) * | 2021-05-27 | 2021-08-31 | 浙江工业大学 | Two-dimensional piston type dynamic flow meter |
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| CN114920199B (en) * | 2021-12-30 | 2024-04-09 | 北京恒合信业技术股份有限公司 | Magnetic induction type flow sensor |
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