CN205246142U - High -pressure natural gas flowmeter - Google Patents

High -pressure natural gas flowmeter Download PDF

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Publication number
CN205246142U
CN205246142U CN201521100258.5U CN201521100258U CN205246142U CN 205246142 U CN205246142 U CN 205246142U CN 201521100258 U CN201521100258 U CN 201521100258U CN 205246142 U CN205246142 U CN 205246142U
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CN
China
Prior art keywords
pressure
flowmeter
malleation
press
natural gas
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Active
Application number
CN201521100258.5U
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Chinese (zh)
Inventor
李振
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Tangshan City Fengrun District Zhanwang Automation Equipment Co Ltd
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Tangshan City Fengrun District Zhanwang Automation Equipment Co Ltd
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Priority to CN201521100258.5U priority Critical patent/CN205246142U/en
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Abstract

The utility model relates to a high -pressure natural gas flowmeter is mainly got by the flowmeter and presses pipeline, malleation to get to press the body, negative pressure to get to press the body and differential pressure transmitter, the flowmeter get press the pipeline be " S type, malleation get press the body establish the flowmeter get press the pipeline on, be located its horizontal direction 30 - 45, the negative pressure is got and is pressed the body and malleation to get to press body symmetry setting, the differential pressure transmitter both sides are got through the pipe connection malleation respectively and are pressed the body and negative pressure and get to press and personally experience sth. Part of the body. The utility model discloses beneficial effect: 1. The accuracy of measuring is higher, compares with ultrasonic flowmeter, and the error of indication is less than 1% basically, 2. Inside nothing throttle part does not have the excess pressure loss when high -pressure natural gas passes through, 3. Can realize two -way measurement, measurement technology can be simplified to this flowmeter, has both practiced thrift the construction investment, practices thrift installation space again, 4. Inside nos movable parts does not almost have the maintenance volume of day -to -day work, only needs every year differential pressure transmitter, and differential pressure transmitter, temperature transmitter and intelligent flow totalizer examine and determine, revise, maintain that management cost hangs down.

Description

A kind of high-pressure natural gas flowmeter
Technical field
The utility model relates to a kind of high-pressure natural gas flowmeter, relates in particular to one and is applied to heightPress the gas flowmeter of gas metering.
Background technology
Domestic some oil field Oil Reservoir Types is many, bury dark, complex structure, permeability are low, hasMore than 1/3 oil in place belongs to hyposmosis, extra-low permeability oil reservoirs. For these reserves, at presentWater injection technology technology be difficult to meet development requires, mainly, by natural energy exploitation, recovery ratio exists10% left and right. To improve, recovery ratio amplitude is large, post-processed simply, is not corroded pipe for natural gas driveLine, the advantage such as polluted reservoir not, become one of main direction of tertiary oil recovery technology. In exploitationIn process, it is most important that the metering of natural gas just seems.
In recovery process, need to utilize natural gas compressor, natural gas is pressurizeed step by step,To meet technical requirement. So to having relatively high expectations of sensor.
The metering of prior art scheme natural gas mainly adopts ultrasonic gas flowmeter amount, and showsThere is the metering of ultrasonic gas flowmeter to there is following shortcoming: expensive, calibrating is inconvenient;At present, only have Chengdu, national crude oil Large flow station natural gas calibrating substation to examine and determine. AndRegularly detect is the effective means of preventing in advance and eliminate in time instrument fault. If regularly detectedCycle oversize, some problem just likely can not get finding in time and processing; If cycle mistakeShort, one side can increase site operation personnel's work difficulty, also likely destroys on the other handThe original performance (as sealing) of part machinery and electronic component, even also may artificially increaseInterrupt the time of normal metering.
Utility model content
For these reasons, it is a kind of simple in structure that the purpose of this utility model is to provide, dimensionProtect conveniently, can substitute the new gas flowmeter of ultrasonic gas flowmeter comprehensively.
Its technical scheme is as follows:
A kind of high-pressure natural gas flowmeter, mainly by flowmeter pressure pipeline, malleation pressure body,Negative pressure taking laminate and differential pressure transmitter, described flowmeter pressure pipeline is " S type, described malleationPressure body is located on flowmeter pressure pipeline, is positioned at 30 °-45 ° of its horizontal directions, described negativePress pressure body and malleation pressure body to be symmetrical arranged, conduit is passed through respectively in described differential pressure transmitter both sidesConnect malleation pressure body and negative pressure taking laminate.
Further, described malleation pressure body and negative pressure taking laminate are arranged on flowmeter pressure pipelineCentre.
Further, described malleation pressure body and negative pressure taking laminate are inserted flowmeter pressure pipeline.
Further, described malleation pressure body and negative pressure taking laminate are inserted in flowmeter pressure pipelinePortion's certain depth.
Further, also comprise blowoff valve I and blowoff valve II, described blowoff valve I is positioned at malleationOn conduit between pressure body and differential pressure transmitter, described blowoff valve II be positioned at negative pressure taking laminate withOn conduit between differential pressure transmitter.
Further, the material selection voltage withstand class 20-60MPa of described flowmeter pressure pipeline,The seamless steel pipe of 20G material.
The beneficial effects of the utility model are:
1. the accuracy of measuring is higher, and compared with ultrasonic flowmeter, the error of indication is less than substantially ±1%;
2. inside is without throttle part, high-pressure natural gas by time lose without additonal pressure;
3. can realize bidirectional measurement, this flowmeter can be simplified metering process, has both saved constructionInvestment, saves again installing space;
4. inside, without movable member, does not almost have the maintenance of routine work, and being often only need be rightDifferential pressure transmitter, differential pressure transmitter, temperature transmitter and intelligent flow-integrating instrument are examined and determine,Revise, maintenance management expense is low.
Brief description of the drawings
Fig. 1 is the utility model perspective view;
Fig. 2 is the utility model principle schematic.
Description of reference numerals:
1-flowmeter pressure pipeline, 2-malleation pressure body, 3-negative pressure taking laminate, 4-differential pressure transportingDevice, 5-blowoff valve I, 6-blowoff valve II, 7-conduit.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now. These accompanying drawings areThe schematic diagram of simplifying, only illustrates basic structure of the present utility model in a schematic way, and therefore it is onlyShow the formation relevant with the utility model.
As shown in Figure 1, a kind of high-pressure natural gas flowmeter, mainly by flowmeter pressure pipeline 1,Malleation pressure body 2, negative pressure taking laminate 3 and differential pressure transmitter 4, flowmeter pressure pipeline 1 is" S type, malleation pressure body 2 is located on flowmeter pressure pipeline 1, is positioned at 30 ° of its horizontal directionsBetween-45 °, negative pressure taking laminate 3 is symmetrical arranged with malleation pressure body 2, differential pressure transmitter 4Both sides connect malleation pressure body 2 and negative pressure taking laminate 3 by conduit 7 respectively.
Further, malleation pressure body 2 and negative pressure taking laminate 3 are arranged on flowmeter pressure pipeline1 centre.
Further, malleation pressure body 2 and negative pressure taking laminate 3 are inserted flowmeter pressure pipeline 1.
Further, malleation pressure body 2 and negative pressure taking laminate 3 are inserted flowmeter pressure pipeline 1Inner certain depth.
Further, also comprise blowoff valve I5 and blowoff valve II6, blowoff valve I5 is positioned at malleationOn conduit 7 between pressure body 2 and differential pressure transmitter 4, blowoff valve II6 is positioned at negative pressure pressureOn conduit 7 between body 3 and differential pressure transmitter 4.
Further, the material selection voltage withstand class 20-60MPa of flowmeter pressure pipeline 1,20GThe seamless steel pipe of material.
Below in conjunction with Fig. 2, principle of the present utility model is further expalined, fluid is being flowed throughWhen flowmeter pressure pipeline 1, due to the water conservancy diversion of " S " tube wall of flowmeter pressure pipeline 1 approximatelyShu Zuoyong, fluid its inner side flow velocity in the time flowing through flowmeter pressure pipeline 1 increases gradually, outsideFlow velocity reduces gradually, and this has just formed the approximate trapezoid velocity flow profile of each flow section. According toThe conservation of mass, the conservation of energy, this three large law of the conservation of momentum, when fluid flows in pipeline,In the conservation of energy of the each former liquid point of identical flow section. But due to the flow velocity of each former liquid point notWith, the inside and outside side pressure that has just formed high pressure sensor is poor. Pressure reduction becomes certain letter with rate of flow of fluidNumber relation. Finally read by intelligent flow-integrating instrument and show and can easily complete by numerical value naturalThe flow measuring of gas gas.
Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, in above-mentioned explanationHold, relevant staff completely can be in the scope that does not depart from this utility model technological thoughtIn, carry out various change and amendment. The technical scope of this utility model is not limited toContent on description, must determine its technical scope according to claim scope.

Claims (6)

1. a high-pressure natural gas flowmeter, it is characterized in that: mainly formed by flowmeter pressure pipeline, malleation pressure body, negative pressure taking laminate and differential pressure transmitter, described flowmeter pressure pipeline is " S type; described malleation pressure body is located on flowmeter pressure pipeline; be positioned at 30 °-45 ° of its horizontal directions; described negative pressure taking laminate and malleation pressure body are symmetrical arranged, and described differential pressure transmitter both sides connect malleation pressure body and negative pressure taking laminate by conduit respectively.
2. a kind of high-pressure natural gas flowmeter as claimed in claim 1, is characterized in that: described malleation pressure body and negative pressure taking laminate are arranged on the centre of flowmeter pressure pipeline.
3. a kind of high-pressure natural gas flowmeter as claimed in claim 1, is characterized in that: described malleation pressure body and negative pressure taking laminate are inserted flowmeter pressure pipeline.
4. a kind of high-pressure natural gas flowmeter as claimed in claim 3, is characterized in that: described malleation pressure body and negative pressure taking laminate are inserted the inner certain depth of flowmeter pressure pipeline.
5. a kind of high-pressure natural gas flowmeter as claimed in claim 1, it is characterized in that: also comprise blowoff valve I and blowoff valve II, described blowoff valve I is on the conduit between malleation pressure body and differential pressure transmitter, and described blowoff valve II is on the conduit between negative pressure taking laminate and differential pressure transmitter.
6. a kind of high-pressure natural gas flowmeter as claimed in claim 1, is characterized in that: the material selection voltage withstand class 20-60MPa of described flowmeter pressure pipeline, the seamless steel pipe of 20G material.
CN201521100258.5U 2015-12-28 2015-12-28 High -pressure natural gas flowmeter Active CN205246142U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521100258.5U CN205246142U (en) 2015-12-28 2015-12-28 High -pressure natural gas flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521100258.5U CN205246142U (en) 2015-12-28 2015-12-28 High -pressure natural gas flowmeter

Publications (1)

Publication Number Publication Date
CN205246142U true CN205246142U (en) 2016-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521100258.5U Active CN205246142U (en) 2015-12-28 2015-12-28 High -pressure natural gas flowmeter

Country Status (1)

Country Link
CN (1) CN205246142U (en)

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