CN206670758U - Static criteria weighing device for fluid media (medium) in high-pressure sealed system - Google Patents

Static criteria weighing device for fluid media (medium) in high-pressure sealed system Download PDF

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Publication number
CN206670758U
CN206670758U CN201720421192.2U CN201720421192U CN206670758U CN 206670758 U CN206670758 U CN 206670758U CN 201720421192 U CN201720421192 U CN 201720421192U CN 206670758 U CN206670758 U CN 206670758U
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pressure
valve
medium
snap joint
fluid
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CN201720421192.2U
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王宏超
孙采鹰
张文彪
闫勇
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North China Electric Power University
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North China Electric Power University
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Abstract

The utility model discloses a kind of static criteria weighing device for being used for fluid media (medium) in high-pressure sealed system for belonging to standard metering devices scope, the standard weighing device is made up of storage container, hand valve, closed conduct, circulating pump, air compressor machine, tested flowmeter, pressure transmitter, temperature transmitter, stable-pressure device, weighing container, electronic scale, outlet hand valve and outlet snap joint;By the joint auxiliary work of the three-way diverter valve in stable-pressure device, snap joint, accumulator and pressure-control valve, the calibration of common flow meters and the accurate measurement of fluid mass can be carried out under the conditions of high-pressure sealed.Due to the presence of stable-pressure device; after three-way diverter valve is commutated suddenly; pressure and the flow mutation of system quickly can tend towards stability again, the unit protection a whole set of weighing system and metering device it is safe and reliable, it is ensured that the effect weighed under the conditions of high-pressure sealed and the degree of accuracy.The manifold pressure that is particularly suitable for use in is higher and the fluid media (medium) that easily undergoes phase transition.

Description

Static criteria weighing device for fluid media (medium) in high-pressure sealed system
Technical field
The utility model belongs to standard metering devices scope.It is more particularly to a kind of to be used for fluid media (medium) in high-pressure sealed system Static criteria weighing device.
Background technology
For keeping the medium phase of manufacturing technique requirent, it is necessary in system dependent on high-pressure sealed environment, fluid is situated between The accurate mass detection of matter occupies consequence;Due to the distinctive physical property of some fluid media (medium)s, it is easy to its phase Generation significant change, cause fluid that the liquid form of complexity is presented in transmission pipeline so that the accurate measurement of fluid mass Face lot of challenges.
Traditional liquid static based on standard quality method weighs modular system mainly by voltage stabilizing fluid supply, pipeline experiment The composition such as section, tested flowmeter, electronic scale, commutator, weighing container and timer, and be typically under normal temperature and pressure state Demarcated and measured.But for some gases, liquid or gas-liquid two-phase fluid-mixing, only under the conditions of high-pressure sealed Its correct phase could be kept, such as:CO2, natural gas, nitrogen etc..Standard weighing device for these fluids must be high pressure The system of closing, the existing liquid standard weighing device based on standard quality method can not meet the requirement.Therefore, there is an urgent need to Establish a set of fluid quality standards device, under the conditions of high-pressure sealed complete common flow meters calibration and fluid mass it is accurate Metering.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, to propose a kind of for fluid Jie in high-pressure sealed system The static criteria weighing device of matter;Characterized in that, in the high-pressure sealed system fluid media (medium) static criteria weighing device By storage container, upper assistant's valve, closed conduct, circulating pump, air compressor machine, tested flowmeter, pressure transmitter, temperature transmitter, Stable-pressure device, weighing container, electronic scale, outlet hand valve and outlet snap joint composition;Wherein storage container passes through upper assistant's valve It is connected respectively by fluid pipeline with gas pipeline with circulating pump and air compressor machine, circulating pump and air compressor machine connect with tested flowmeter Connect, tested flowmeter is connected by fluid-mixing pipeline with three-way diverter valve A entrances A, and the straight-through outlet B of three-way diverter valve passes through straight The bifurcation G to thread a pipe is connected with straight-through accumulator 16 and straight-through type pressure control valve 15 respectively, and straight-through type pressure control valve 15 is with depositing Storage container 1 connects;Three-way diverter valve Bypass outlet C respectively with pressure transmitter 9, temperature transmitter 10 and entrance snap joint 13 Connection, entrance snap joint 13 is by the bifurcation D of by-pass line respectively with bypassing accumulator 18 and bypass pressure control valve 17 Connection, wherein, entrance snap joint is high pressure resistant pneumatic Self-locking joint, after the bifurcation D bifurcateds of by-pass line, makes this Joint can eliminate additional force caused by flexible pipe hardening;Bypass pressure control valve 17 is connected with weighing container 19;Bypass accumulator 18 and weighing container 19 simultaneously be placed on electronic scale 22;The outlet hand valve 20 of weighing container 19 is by exporting snap joint 21 with Hand valve 2.2 connects with the connecting node of circulating pump 5.
The entrance snap joint and outlet snap joint form by famale connector and male contact;Its entrance snap joint 13 It is made up of entrance snap joint famale connector 12 and entrance snap joint male contact 14.
The stable-pressure device by three-way diverter valve 11, entrance snap joint 13, bypass accumulator 18, straight-through accumulator 16, Bypass pressure control valve 17, straight-through type pressure control valve 15 form;Wherein described entrance snap joint be connected to three-way diverter valve with Between bypass pressure control valve, high-speed communication and self-locking by joint, playing additional force caused by eliminating flexible pipe hardening influences The effect of weighing precision;Connection distance between each part of stable-pressure device should try one's best shortening, preferably to play accumulator Voltage stabilizing function.
Connected between the famale connector of three-way diverter valve and the entrance snap joint with vertical stainless steel tube, to ensure this section Fluid liquid medium will not be retained, only retains gaseous fluid medium, improves weighing precision.
The accumulator is gasbag-type, when three-way diverter valve commutates suddenly, the fluid in high-pressure sealed pipeline is produced pressure When power is mutated and flow is mutated, accumulator is used for steady pressure, and steady fluid media (medium) fluctuation, attenuated mutant is to standard weighing process The influence brought.
The pressure transmitter and temperature transmitter, it is installed on the three-way diverter valve by-pass line in stable-pressure device, uses The real-time pressure and temperature value of pipeline section gas medium between detection three-way diverter valve and entrance snap joint.
The beneficial effects of the utility model be the present apparatus be directed to high-pressure sealed system in fluid media (medium) be difficult to be precisely weighed and The characteristics of examining and determine flowmeter, devises the standard weighing device with stable-pressure device, the device can be under the conditions of high-pressure sealed Carry out the calibration of common flow meters and the accurate measurement of fluid mass.Due to the presence of stable-pressure device, make three-way diverter valve unexpected After commutation, the mutation of the pressure and flow of standard weighing device quickly can tend towards stability again, protect a whole set of weighing device and The safety of metering device, it is ensured that the effect weighed and the degree of accuracy.The device reliability is high, be particularly suitable for use in manifold pressure compared with Fluid media (medium) that is high and easily undergoing phase transition, has higher theoretical research value and practical application meaning.
Brief description of the drawings
Fig. 1 is standard weighting device structure composition frame chart.
Fig. 2 is the standard weighing system artwork of high-pressure sealed system fluid medium;
In figure:1. storage container/knockout drum;2.1 left-hand seat valves;2.2 assistant's valves;3. fluid pipeline;4. gas pipeline;5 pumps; 6. air compressor machine;7. tested flowmeter;8. fluid-mixing pipeline;9. pressure transmitter;10. temperature transmitter;11. triplet commutation Valve;12. entrance snap joint famale connector;13. entrance snap joint;14. entrance snap joint male contact;15. straight-through type pressure control Valve processed;16. straight-through accumulator;17. bypass pressure control valve;18. bypass accumulator;19. weighing container;20. export hand valve; 21. export snap joint;22. electronic scale.A-triplet commutation valve inlet;The straight-through outlet of B-three-way diverter valve;C-triplet commutation Valve Bypass outlet;D-by-pass line bifurcation;G-direct piping bifurcation;
Fig. 3 is intelligence instrument signal processing apparatus composition frame chart.
In figure:23. timer;24.PCI boards;25.PC machines
Fig. 4 is that the voltage stabilizing of standard weighing system is weighed flow chart.
Embodiment
The utility model provides a kind of static criteria weighing device for being used for fluid media (medium) in high-pressure sealed system;Tie below Closing drawings and the specific embodiments, the present invention will be further described in detail.
Fig. 1, Fig. 2 show the standard weighting device structure schematic diagram of high-pressure sealed system fluid medium.In figure, the height Densification closes the static criteria weighing device of system fluid medium by storage container, upper assistant's valve, closed conduct, circulating pump, pneumatics Machine, it is detected flowmeter, pressure transmitter, temperature transmitter, stable-pressure device, weighing container, electronic scale, outlet hand valve and goes out outspoken Quick coupling forms;Wherein storage container 1 is connected by left-hand seat valve 2.1, fluid pipeline 3 with circulating pump 5;Assistant's valve 2.2, flue Road 4 is connected with air compressor machine 6;Circulating pump 5 and air compressor machine 6 are connected with tested flowmeter 7 jointly, and tested flowmeter 7 passes through mixed flow Body pipeline 8 is connected with the entrance A of three-way diverter valve 11, and the straight-through outlet B of three-way diverter valve is distinguished by the bifurcation G of direct piping It is connected with straight-through accumulator 16 and straight-through type pressure control valve 15, straight-through type pressure control valve 15 is connected with storage container 1;Triplet commutation Valve Bypass outlet C is connected with pressure transmitter 9, temperature transmitter 10 and entrance snap joint 13 respectively, entrance snap joint 13 It is connected respectively with bypass accumulator 18 and bypass pressure control valve 17 by the bifurcation D of by-pass line, wherein, the fast quick access of entrance Head is high pressure resistant pneumatic Self-locking joint, after the bifurcation D bifurcateds of by-pass line, the joint is eliminated flexible pipe hardening Caused additional force;Bypass pressure control valve 17 is connected with weighing container 19;Bypass accumulator 18 and weighing container 19 are put simultaneously In on electronic scale 22;The outlet hand valve 20 of weighing container 19 is by exporting snap joint 21 and the company of assistant's valve 2.2 and circulating pump 5 Connect node connection.
In fig. 2, entrance snap joint and outlet snap joint form by famale connector and male contact;The fast quick access of its entrance First 13 are made up of entrance snap joint famale connector 12 and entrance snap joint male contact 14.
In fig. 2, by three-way diverter valve 11, entrance snap joint 13, bypass accumulator 18, straight-through accumulator 16, bypass Pressure-control valve 17 and straight-through type pressure control valve 15 form stable-pressure device;Wherein, the entrance snap joint 13 is connected to threeway Between reversal valve 11 and bypass pressure control valve 17, high-speed communication and self-locking by joint, play and eliminate flexible pipe hardening generation Additional force influence weighing precision effect;Connection distance between each part of the stable-pressure device should try one's best shortening, so as to preferably Play the voltage stabilizing function of accumulator;And with vertical stainless between three-way diverter valve 11 and the famale connector of entrance snap joint 13 12 Fastener for connection, to ensure that this section will not retain fluid liquid medium, gaseous fluid medium is only retained, improves weighing precision.
The bypass accumulator 18 is gasbag-type, when three-way diverter valve 11 commutates suddenly, makes the stream in high-pressure sealed pipeline Body produces pressure jump and flow mutation, then bypasses accumulator and play steady pressure, the effect of steady fluid media (medium) fluctuation, weaken It is mutated the influence brought to standard weighing process.
The pressure transmitter 9 and temperature transmitter 10 are installed on the by-pass line of the three-way diverter valve 11 in stable-pressure device On, for detecting the real-time pressure and temperature of gas medium in the pipeline section between three-way diverter valve 11 and entrance snap joint 13 Value, the two kinds of situations weighed to single-phase liquid and gas-liquid two-phase fluid, when weighing, fluid media (medium) is situated between for gas-liquid two-phase fluid During matter, the gas in the pipeline section is the gas in two-phase fluid medium;Further according to pressure and temperature and the pass of gas medium density System, calculates gas density;According to internal diameter of the pipeline and height known to the pipeline section, the volume of gas medium in pipeline section is obtained, by This can obtain the quality of survival gas medium in the segment pipe, the quality correction value as standard metering result.
When fluid media (medium) of weighing is liquid, the left-hand seat valve 2.1 in gas pipeline 4 shown in figure is closed, and gas pipeline 4 is not Give and enabling, the air compressor machine 6 in pipeline 4 is closed, and liquid is only weighed in fluid-mixing pipeline 8;When fluid media (medium) of weighing is gas During gas-liquid two-phase liquid medium, storage container 1 plays a part of knockout drum, and the two-phase mixtures fluid in container is situated between in the container 1 Matter is divided into air-liquid two-phase by settled process, and the left-hand seat valve 2.1 in gas pipeline 4 is opened, and the air compressor machine 6 in pipeline 4 is opened, gas Body is mixed by gas pipeline 4 with the liquid in fluid pipeline 3 in the outlet of circulating pump 5, subsequently into tested flowmeter 7, is made Enter fluid-mixing pipeline 8 for two-phase mixtures fluid medium, in case use of weighing.
When device prepares to weigh, three-way diverter valve 11 is switched to Bypass outlet C, because three-way diverter valve 11 commutates suddenly, Triplet commutation valve inlet A, 2 points of Bypass outlet C pressure difference is caused to increase suddenly, the mutation of main line flow, now stable-pressure device is opened Beginning work, Bypass outlet C and entrance snap joint 13 of the fluid media (medium) via three-way diverter valve 11 in by-pass line, reach into During the bifurcation D of the outlet, i.e. by-pass line of outspoken quick coupling 13, now because the air bag in bypass accumulator 18 has necessarily Initial pressure, and the restriction pressure value of bypass pressure control valve 17 therefore has higher than the initial pressure in bypass accumulator 18, △PDE> △ PDF, fluid media (medium) first via by-pass line bifurcation D flow into bypass accumulator 18, bypass accumulator 18 with The inflow of fluid media (medium), internal pressure gradually increase, when its pressure value increases to △ PDE< △ PDFWhen, bypass accumulator 18 In fluid media (medium) inversely flow out, via by-pass line bifurcation D and bypass pressure control valve 17, flow into weighing container 19 In.
When device, which prepares to weigh, to be finished, three-way diverter valve 11 is switched to straight-through outlet B, because three-way diverter valve 11 changes suddenly To, cause triplet commutation valve inlet A and straight-through 2 points of the B in outlet pressure difference to increase suddenly, the mutation of main line flow, now voltage stabilizing dress Put and continue to play a role, direct piping fluid media (medium) reaches the bifurcated of direct piping via the straight-through outlet B of three-way diverter valve 11 During point G, now there is certain initial pressure due to leading directly to the air bag in accumulator 16, and the restriction of straight-through type pressure control valve 15 Pressure value is higher than the initial pressure in straight-through accumulator 16, therefore has, △ PGH> △ PGI, fluid media (medium) is first via straight pipe Road bifurcation G flows into straight-through accumulator 16, and straight-through accumulator 16 gradually increases with the inflow of fluid media (medium), internal pressure, When its pressure value increases to △ PGH< △ PGIWhen, the fluid media (medium) led directly in accumulator 16 flows out, via direct piping bifurcation G is inversely flowed into storage container 1.
Fig. 3 show intelligence instrument signal processing flow block diagram.Flowmeter 7 is detected in figure to be used in the pipeline that will detect Fluid media (medium) real-time flow data, PC 25 is uploaded to by PCI board card 24, the timing time uploaded with reference to timer 23, in PC The calculating of tested flowmeter detection mass flow is carried out on machine 25, the mass value is tested meter reading.Pressure transmitter 9 and temperature The pressure and temperature value of gas in the pipeline section detected is reached PC 25, on PC 25 by transmitter 10 by PCI board card 24 Carry out the calculating of gaseous mass in pipeline section between gas density and three-way diverter valve 11 and entrance snap joint 13.Electronic scale 22 The alleged fluid value obtained is uploaded to PC 25 via PCI board card 24, with the foregoing pipeline section gaseous mass value phase being calculated Add, then subtract the initial indicating value for the electronic scale 22 for starting preceding storage of weighing, obtain the standard matter of high-pressure sealed system fluid medium Value, the standard value are used for checklist read-around ratio compared with to verify tested flowmeter.The fast quick access of entrance snap joint 13 and outlet First 21 be high-pressure pneumatic self-lock switch, and its control command, by being passed under PCI board card 24, realizes the upper of snap joint by PC 25 Machine automatically controls.Three-way diverter valve 11 is pneumatic operated valve, its straight-through and bypass direction on off operating mode, passes through PCI by PC 25 Board 24 passes down order and controlled.
The voltage stabilizing that Fig. 4 show standard weighing device is weighed flow, and whether inquiry system first needs to weigh, if do not claimed Weight, then fluid media (medium) normally flows in main line, disconnection entrance snap joint, the indicating value that now recorded electronic claims, as The initial weight weighed;Weigh if desired, then entrance snap joint 13 is connected first, then starts timer 23 and carries out During poidometer, while three-way diverter valve 11 is switched to bypass by original pass-through state;Now the fluid media (medium) of main line passes through The Bypass outlet C of three-way diverter valve 11 and entrance snap joint 13 are flowed into bypass accumulator 18, carry out steady pressure of system;Work as bypass Fluid pressure in accumulator 18 reach bypass pressure control valve 17 pressure setting the upper limit when, fluid media (medium) from bypass accumulator Flow out in 18, through bypass pressure control valve 17, flow into weighing container 19;Program detects the state of three-way diverter valve 11 again, If three-way diverter valve 11 is cut into straight-through outlet B, illustrate that fluid media (medium) to be weighed is ready, while stop timer 23, Straight-through outlet B of the fluid media (medium) through three-way diverter valve 11 flows into straight-through accumulator 16, carries out voltage stabilizing;When in straight-through accumulator 16 When fluid medium pressure reaches the pressure setting upper limit of straight-through type pressure control valve 15, fluid media (medium) flows from straight-through accumulator 16 Go out, flowed into through straight-through type pressure control valve 15 in storage container 1;Now entrance snap joint 13 is cut off, and electronic scale 22 starts to claim Weight, PC 25 store the weighing data uploaded;Entrance snap joint 13 connects again, and outlet hand valve 20 is open-minded, exports fast quick access First 21 are connected, and the fluid media (medium) in weighing container 19 is discharged by exporting hand valve 20 and outlet snap joint 21, fluid media (medium) weight Newly enter in main line, wait weigh next time to be opened.

Claims (6)

  1. A kind of 1. static criteria weighing device for being used for fluid media (medium) in high-pressure sealed system;Characterized in that, the high densification The static criteria weighing device of fluid media (medium) in system is closed by storage container, hand valve, closed conduct, circulating pump, air compressor machine, tested Flowmeter, pressure transmitter, temperature transmitter, stable-pressure device, weighing container, electronic scale, outlet hand valve and outlet snap joint Composition;Wherein storage container (1) passes through fluid pipelines (3) and gas pipeline respectively by left-hand seat valve (2.1), assistant's valve (2.2) (4) it is connected with circulating pump (5), air compressor machine (6) connection, circulating pump (5), air compressor machine (6) with tested flowmeter (7), is detected flow Meter (7) be connected by fluid-mixing pipeline (8) with the entrance (A) of three-way diverter valve (11), three-way diverter valve (11) it is straight-through go out Mouth (B) is connected with straight-through accumulator (16) and straight-through type pressure control valve (15) respectively by the bifurcation G of direct piping, leads directly to pressure Force control valve (15) is connected with storage container (1);Three-way diverter valve Bypass outlet (C) becomes with pressure transmitter (9), temperature respectively Send device (10) and entrance snap joint (13) to connect, entrance snap joint (13) by the bifurcation D of by-pass line respectively with side Logical accumulator (18) and bypass pressure control valve (17) connection, wherein, entrance snap joint is high pressure resistant pneumatic Self-locking joint, After the bifurcation D bifurcateds of by-pass line, the joint is set to eliminate additional force caused by flexible pipe hardening;Bypass pressure controls Valve (17) is connected with weighing container (19);Bypass accumulator (18) and weighing container (19) while be placed on electronic scale (22);Claim The outlet hand valve (20) of weight container (19) is by exporting snap joint (21) and assistant's valve (2.2) and the connection section of circulating pump (5) Point connection.
  2. 2. being used for the static criteria weighing device of fluid media (medium) in high-pressure sealed system according to claim 1, its feature exists In the entrance snap joint and outlet snap joint form by famale connector and male contact;Its entrance snap joint (13) by Entrance snap joint famale connector (12) forms with entrance snap joint male contact (14).
  3. 3. being used for the static criteria weighing device of fluid media (medium) in high-pressure sealed system according to claim 1, its feature exists In the stable-pressure device is by three-way diverter valve (11), entrance snap joint (13), bypass accumulator (18), straight-through accumulator (16), bypass pressure control valve (17), straight-through type pressure control valve (15) composition;Wherein described entrance snap joint is connected to threeway Between reversal valve and bypass pressure control valve, high-speed communication and self-locking by joint, play attached caused by elimination flexible pipe hardening Reinforcing influences the effect of weighing precision;Connection distance between each part of stable-pressure device should try one's best shortening, preferably to send out Wave the voltage stabilizing function of accumulator.
  4. 4. being used for the static criteria weighing device of fluid media (medium) in high-pressure sealed system according to claim 1, its feature exists In, between the famale connector of three-way diverter valve and the entrance snap joint with vertical stainless steel tube connect, to ensure that this section will not Fluid liquid medium is retained, only retains gaseous fluid medium, improves weighing precision.
  5. 5. being used for the static criteria weighing device of fluid media (medium) in high-pressure sealed system according to claim 1, its feature exists In the accumulator is gasbag-type, when three-way diverter valve commutates suddenly, the fluid in high-pressure sealed pipeline is produced pressure jump When being mutated with flow, accumulator is used for steady pressure, steady fluid media (medium) fluctuation, and attenuated mutant is brought to standard weighing process Influence.
  6. 6. being used for the static criteria weighing device of fluid media (medium) in high-pressure sealed system according to claim 1, its feature exists In the pressure transmitter and temperature transmitter, being installed on the three-way diverter valve by-pass line in stable-pressure device, for detecting The real-time pressure and temperature value of pipeline section gas medium between three-way diverter valve and entrance snap joint.
CN201720421192.2U 2017-04-20 2017-04-20 Static criteria weighing device for fluid media (medium) in high-pressure sealed system Active CN206670758U (en)

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Application Number Priority Date Filing Date Title
CN201720421192.2U CN206670758U (en) 2017-04-20 2017-04-20 Static criteria weighing device for fluid media (medium) in high-pressure sealed system

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Application Number Priority Date Filing Date Title
CN201720421192.2U CN206670758U (en) 2017-04-20 2017-04-20 Static criteria weighing device for fluid media (medium) in high-pressure sealed system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110857879A (en) * 2018-08-23 2020-03-03 中国石油天然气股份有限公司 Gas weighing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110857879A (en) * 2018-08-23 2020-03-03 中国石油天然气股份有限公司 Gas weighing device

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