CN1598496A - Precision metering system for transporting liquid and gas by pipeline - Google Patents
Precision metering system for transporting liquid and gas by pipeline Download PDFInfo
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- CN1598496A CN1598496A CN 03159275 CN03159275A CN1598496A CN 1598496 A CN1598496 A CN 1598496A CN 03159275 CN03159275 CN 03159275 CN 03159275 A CN03159275 A CN 03159275A CN 1598496 A CN1598496 A CN 1598496A
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Abstract
The invention discloses a metering system for measuring media total quantity when the liquid or gas media flows through pipe line. It solves the problem that the micro flow of liquid or gas media can not be metered (for example: the pipeline leakage). It uses 'open and close control system' and meter to form an accurate metering system. It can be applied to metering of water, coal gas, natural gas and so on. And it can detect if the system has leakage, and it is connected to alarming circuit, which can alarms the leakage state.
Description
Technical field
The present invention relates to a kind of liquid, gas medium (water, coal gas etc.) when flowing through pipeline measurement flow through the accurate metering system of pipeline medium total amount, no matter particularly flow size all can accurate measurement liquid, a kind of metering system of gas medium total amount.
Background technology
Liquid, the metering when gas medium is flowed through pipeline now adopts water meter, gas meter etc. to measure.Because the reasons in structure of above-mentioned gauging table, when liquid, gas medium trace stream through gauging table (for example: water pipe water clock, gas piping leak), gauging table can not measure liquid, the gas medium total amount of the pipeline of flowing through under this state.
In the recent period, domestic have this type of technology to occur: " anti-leakage water meter " (application number: 02294194.0).The technical indicator that " initial flow " arranged in this technology means that this technology can not carry out the metering of accurate total amount under the micrometeor state less than " initial flow ".
Summary of the invention
No matter the present invention is intended to solve under the state of which kind of flow, all can carry out accurate total amount metering to liquid, the gas medium of the gauging table of flowing through, no longer include the technical indicator of " initial flow ".
For achieving the above object, the present invention is the import and export two ends of the gauging table of liquid, gas medium conveyance conduit one " open, close control system " in parallel.This system is made up of " valve " and " value device ".The structure of value device is basic identical with " single-acting spring reset cylinder " in hydraulic pressure or the pneumatics, and " cylinder " medium reserves " are expired " or " sky " sends electric signal or mechanical signal (displacement of movable parts-piston and piston rod) but it can be complied with.
" opening and closing control system " is to work like this: when " value device " sends " expiring " signal.Valve is in opening.When " value device " sent " sky " signal, valve was in closed condition.When being in the intermediateness of " non-full " " non-NULL " when " value device ", do not signal, valve keeps current unlatching or closing state." the expiring " of so-called " value device ", be meant that the cylinder inner carrier is promoted by liquid, gas medium, with Piston Compression to stop.So-called " sky " is meant that the cylinder inner carrier under " restoring force " of spring, is pushed into stop with piston.
Narrate the principle of work that " opens, close control system " " metering system " formed with gauging table below: when using appliance is closed, the similar closed system of this segment pipe, piston in spring action next time to stop." value device " is in the emptying state, and valve is in closed condition accordingly.When the medium of this segment pipe reduces (using appliance is opened or this segment pipe leaks), the medium in " value device " also will increase until being full of medium." value device " provides " being full of " signal, valve opening at this moment.If using appliance uses normally, " value device " will can not be in the emptying state, so this valve will be in opening, gauging table is metering normally under normal conditions also.Tiny leakage is quite different in this way.After medium emptying, valve opening, signal is sent in " value device " moment emptying, and this valve closing will repeat said process again.During tiny leakage, close " opening and closing control system "-process of Open-closure in, gauging table also also measurement flow can be regarded as " metering of pulsed quantity accumulative total formula " through the total amount of liquid, gas medium.
As valve during with motor or solenoid actuated, valve can adopt any type.The extraction of " value device " electric signal has some kinds of modes: connect two pressure switches as the pipeline in a side of the piston spring effect of " cylinder ".One will " be sent the pressure of electric signal " and transfer to being slightly larger than atmospheric pressure; Another will " send the pressure of electric signal " and transfer to being slightly less than liquid, minimum pressure when gas medium is carried.What last pressure switch sent is " being full of " electric signal: what the described pressure switch in back sent is " emptying " electric signal.
Also can settle a voltage dependent resistor (VDR) between spring and supporting surface, the electric signal that two terminals of corresponding throw of poston, the resistance difference of this voltage dependent resistor (VDR), these two resistances promptly can be used as control circuit uses.
Also can settle " trigger head " (metal or the magnet) of one " near switch " on piston or piston rod, in two terminals of throw of poston, two " near switch " settled in the cylinder body outside.When piston walks to two terminals, " near the switch " of corresponding position will send electric signal.According to the type of " near switch ", the material of piston and cylinder body can adopt insulator material or paramagnetism material.
If the unlatching of valve or to close be to utilize " restoring force " of value device medi-spring and the pressure of pumped (conveying) medium (i.e. " passive drive "), the extraction of signal then is the displacement that utilizes piston, is described below:
Utilize a double-lever mechanism: this mechanism is by two forks, can be coaxial or disalignment be fixed on the support body, fork can be swung around stationary shaft.The axle of a last vertical fork is gone here and there on two fork tops respectively, and after fork put by the relative position of the swing circular arc on top, two fork tops connected with the tensile elasticity element.Arbitrary fork of this rocker is connected with piston as driving lever, and another root fork then is a follower lever, drives the unlatching of valve or closes.
The active fork also adopts and pushes away, idler arm, does straight line and moves, and can be referred to as: move---swing-bar mechanism.
This driven fork has such character: after driving lever has rotated certain angle or moves a certain distance, unexpected rotation will take place in follower lever, corresponding to moving of piston, be exactly that piston will be swung at two terminal follower levers of a certain section stroke---the unlatching of driving valve or close.Two terminals of throw of poston are corresponding to " being full of " or " emptying " state of " value device ".
Adopted " opening and closing control system " metering system with the gauging table composition, its useful effect is: at first make metering more accurate, and the effect that adjusts the mouth pressure fluctuation is arranged.Secondly, when tiny leakage, periodic duty state clocklike will appear in " opening and closing control system ".Utilize this characteristics, connect one have timing, regularly, the circuit of memory function, can be made into the pipeline tiny leakage and report to the police or device for informing.
Particularly useful for the pipeline of carrying inflammable gas.When not measuring, only need report when denying tiny leakage, the path that replaces gauging table with a pipeline gets final product.
Description of drawings
Fig. 1 is a fundamental diagram of the present invention.
Fig. 2 is that the driven by power that the present invention adopts " opens and closes control system ".
Fig. 3 is that the passive drive that the present invention adopts " opens and closes control system ".
Fig. 4 is the quick-closing valve door type that adopts among the present invention.
Fig. 5 is the valve of another kind of quick closing valve type among the present invention.
Fig. 6 is the modified of valve shown in Figure 5.
Fig. 7 is a double-lever mechanism fundamental diagram among the present invention.
Fig. 8 moves-the swing-bar mechanism fundamental diagram.
Fig. 9 is the figure that connects of valve and double-lever mechanism among the present invention.
Figure 10 is the planform figure of part 3 among Fig. 9.
Figure 11 be among the present invention the another kind of structure of valve and double-lever mechanism connect figure.
Figure 12 and Figure 13 are valves of the present invention and move-master, side direction view that swing-bar mechanism connects.
Embodiment
Among Fig. 1: 1 is liquid, feed channel, and 2 is gauging table, and 3 for opening and closing control system, and 4 is using appliance.
Among Fig. 1, the using appliance of terminal is at gas piping middle finger gas range, and water heater etc. are at tap water pipe line middle finger water swivel, washing machine etc.Its common feature is: the size of controlling its flow by switch.
The structural drawing of " opening and closing control system " when Figure 2 shows that driven by power.1 is piston, and 2 is compression spring, and 3 for spring supports, and 4 is valve, and 5 is the valve operation bar.This bar can connect the driven by power element---motor or electromagnet.
According to above-mentioned principle, the concrete scheme during enforcement can be divided into two classes: driven by power and passive drive.
The driven by power method: when the equivalent value device provides a signal, by motor or solenoid actuated valve, make it the state of opening and closing and value device full, dummy status is corresponding.Valve can adopt the valve of existing arbitrary type.
The enforcement of this scheme is conspicuous to those skilled in the art, no longer tired chatting.
The passive drive embodiment is seen Fig. 3 to Figure 13.
The structural drawing that " opens and closes control system " when Figure 3 shows that " passive drive ": 1 is piston rod, and 2 is valve, and 3 are " double-lever mechanism " or " moving-swing-bar mechanism ".
Figure 4 shows that spherical valve or stopcock.
Figure 5 shows that quick closing valve ceramic core rotary valve commonly used in the present family.Among Fig. 5,1 is rubber gasket, and 2 is shell, and 3 is ceramic stator, 4 is ceramic moving plate, and 5 are rotating shaft, and 2a is a through hole on the shell 2, and 3a is the through hole on the stator, 5a is the flat-shaped support chip of rotating shaft, and 5b is the protruding end on this support chip, inserts the recess of moving plate 4, together rotates with rotating shaft 5 to drive sheet 4.Other is chatted as spacing (90 ° of rotations) and sealing etc. are no longer tired.
The common ground of such valve is: half-twist can make valve be in and open completely or closed condition.
Shown in Figure 6 is the modified of rotary valve shown in Figure 5, its objective is in order to reduce rotating torque.Concrete scheme is described below: stator is positioned on the aperture end face of stepped hole of shell power usefulness compression elastic element 1 realization that moving plate contact with the stator sealing surface.The acting force of flexible member should be greater than the product of via area on maximum pressure and stator during pumped (conveying) medium in this pipeline.Between rotating shaft and shell, arrange a pair of radial thrust bearing spare 2, and with ending 3 lockings of sheet spare.The little hole depth of stepped hole should be greater than the size sum of all parts in this hole except that original paper 1 in this hole.
Fig. 7 is a double-lever mechanism.Among Fig. 7: 1 is extension spring, and 2 is support body.3 is driving lever, and 4 is follower lever, P be the support body center line with
The line intersection point.The settling position of follower lever 4 is A ' and B ' point, and its principle of work is as follows: when driving lever 3 is center of circle rotation with axle O ', and the upper end A edge of bar 3
Arc moves,
Between the arc, bar 4 can not move, and after the A point had been crossed the M point, to name a person for a particular job with the O point be an edge to A ' on the bar 4
Arc moves to B ' some place.This moment, the end points of bar 3 also arrived the B point.When driving lever 3 from B point edge
When arc rotates,
In the time of between the arc, follower lever 4 can not rotate yet.Arc
Between distance
Corresponding to value device sky, mechanical location signal when full.The state of follower lever 4 is not that A ' is exactly B ', is similar to 0 in the digital circuit, 1 state, also can be referred to as " digital rocker ".
Among Fig. 8, the 1st, extension spring, the 2nd, support body, the 3rd, push away, idler arm, the 4th, driven fork.This structure is that the radius with driving lever increases to infinitely-great distortion, and is identical with the principle of work of Fig. 7.
Fig. 9 is the structural representation of rotary valve shown in Figure 6 and double-lever mechanism combination.
Among Fig. 9,1 is valve housing, and 2 is dead axle, and 3 is the active fork, and 4 is driven fork, connects with valve hinges, and 5 are the extension spring column, and 6 are extension spring, and 7 is the extension spring column of active fork.
Figure 10 is the structural representation of part 3 among Fig. 9 (initiatively fork).1 is axis hole, and 2 is the neutral gear hole.The size of its size should be with the rotating shaft diameter of rotary valve and required rotational angle and is decided.3 is the column fixed orifice.
Figure 11 is another form of structure shown in Figure 9.Sequence number is identical to be same part, and initiatively fork is external, can reach the convenient purpose that drives this part.
Figure 12, Figure 13 are rotary valves and move-structural representation of swing-bar mechanism combination, are respectively main, side view.
Wherein, 1 is the rotary valve housing, and 2 is the driven fork that connects with the rotary valve rotating shaft, and 3 is extension spring, 4 for push away, pull bar, 5 for push away, the pull bar guide frame.
To the two kinds of valves of Fig. 9～Figure 13 and the combination of digital fork, utilize piston rod to drive.The stroke of piston should or push away with the active fork, the required stroke of pull bar is complementary.The restoring force of piston stage clip should be greater than the active fork or push away, friction force sum that pull bar drives the required power of driven fork and piston and cylinder endoporus.The size of piston area is determined.In the time of should be according to the ducted medium minimum pressure of pumped (conveying) medium, the product of area and pressure greater than stage clip with fork initiatively or push away, pull bar drives sums such as the required power of driven fork.
Claims (9)
1, the accurate metering system when a kind of liquid, gas medium pipeline transportation, form by gauging table, electrically operated valve etc., the power of electrically operated valve can be motor or electromagnet, it is characterized in that: make motor or electromagnet produce the signal of action, by the quantity decision of medium for storing in the value device; The value device can send " storage is full " signal when being full of medium; During the emptying medium, can send " emptying " signal; " storage is full " signal is opened electrically operated valve; " emptying " signal is closed electrically operated valve; The structure of value device medium for storing part adopts the structure of " single-acting spring reset cylinder " in hydraulic pressure, the pneumatics.
2, accurate metering system according to claim 1 is characterized in that: the generation of value device signal is to connect pressure switch in two hydraulic techniques at the pipeline of the side of " single-acting spring reset cylinder " piston spring effect; One " sending the pressure of electric signal " transfers to being slightly larger than atmospheric pressure; Another " sends the pressure of electric signal " and transfers to being slightly less than liquid, minimum pressure when gas medium is carried; What the pressure switch in front sent is " storage is full " electric signal; What a pressure switch of back sent is " emptying " electric signal.
3, accurate metering system according to claim 1 is characterized in that: can settle a voltage dependent resistor (VDR) between spring and spring support, corresponding to the different resistance values of throw of poston two terminals, promptly can be used as the electric signal of control circuit.
4, accurate metering system according to claim 1 is characterized in that: the trigger head that can settle one " near switch " on piston or piston rod; In two terminal corresponding positions of throw of poston, cylinder body externally-arranged two " near switches "; The manufacturing material of this kind piston and cylinder body should be insulation material or the diamagnetism material that does not influence " near switch " serviceability.
5, the accurate metering system when a kind of liquid, gas medium pipeline transportation is made up of gauging table, valve and single-acting spring reset cylinder, it is characterized in that: valve be rotate 90 ° can full open or the quick closing valve type valves of contract fully; The active fork of the digital rocker of piston actuated that moves or push away, idler arm, the unlatching of the driven fork driver's valve door of this rocker or close.
6, accurate metering system according to claim 5, it is characterized in that: two forks of digital rocker can be coaxial also can disalignment, the top of two forks is connected by the tensile elasticity original paper, and wherein a fork is the active fork, and another root is driven fork.
7, accurate metering system according to claim 5 is characterized in that: two forks of digital rocker also can be made the active fork that straight line moves pushes away, the form of idler arm.
8, accurate metering system according to claim 5 is characterized in that: the stator of the quick closing valve ceramic core rotary valve of employing is placed on the step of stepped hole of valve body, and the elasticity original paper is housed between moving plate and the rotating shaft, and moving plate is pressed on the stator; Be placed with rolling bearing between rotating shaft and the housing.
9, according to each described metering system in the claim 1 to 8, it is characterized in that: this system can be used as the instrument of this system of check until the using appliance tiny leakage; And can be connected with (knowing) circuit of reporting to the police; If need not measure, can get final product with the path of conduit replacement gauging table in the time of only need reporting tiny leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031592759A CN100408984C (en) | 2003-09-17 | 2003-09-17 | Precision metering system for transporting liquid and gas by pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031592759A CN100408984C (en) | 2003-09-17 | 2003-09-17 | Precision metering system for transporting liquid and gas by pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598496A true CN1598496A (en) | 2005-03-23 |
| CN100408984C CN100408984C (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031592759A Expired - Fee Related CN100408984C (en) | 2003-09-17 | 2003-09-17 | Precision metering system for transporting liquid and gas by pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100408984C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388324C (en) * | 2006-06-30 | 2008-05-14 | 常州信力汉克电子有限公司 | Output converter of gas volume corrector |
| CN1936430B (en) * | 2006-04-03 | 2010-05-12 | 美新半导体（无锡）有限公司 | Microleak automatic protection apparatus based on microflow detection |
| CN102221437A (en) * | 2010-04-15 | 2011-10-19 | 宝山钢铁股份有限公司 | Pipeline air pressure on-line detector and detection method |
| CN102305646A (en) * | 2011-05-10 | 2012-01-04 | 安徽润尔兴仪表有限公司 | Intelligent anti-leakage electromagnetic flowmeter |
| CN112345019A (en) * | 2020-10-22 | 2021-02-09 | 雷波县竹苑春酿酒有限公司 | Automatic metering device for wine making |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1430488A (en) * | 1974-04-05 | 1976-03-31 | Tuchenhagen O | Liquid flow control valve |
| DE3321754C1 (en) * | 1983-06-16 | 1985-01-17 | Danfoss A/S, Nordborg | Flow meter |
| JP2872355B2 (en) * | 1990-06-27 | 1999-03-17 | 矢崎総業株式会社 | Gas supply pipe leak detection device |
| CN2135770Y (en) * | 1992-01-23 | 1993-06-09 | 黄世华 | Micro-flow meter |
| CN2209794Y (en) * | 1994-10-24 | 1995-10-11 | 张福缘 | Plug-in type liquid level sensor |
| CN2363267Y (en) * | 1998-11-12 | 2000-02-09 | 威海广泰空港设备有限公司 | Position inductor |
| CN1175255C (en) * | 2000-12-29 | 2004-11-10 | 庄革 | Intelligent antiseepage water meter |
| CN2487929Y (en) * | 2001-05-12 | 2002-04-24 | 王东 | Device for preventing fraudulent use of water by drip leakage |
| CN2572354Y (en) * | 2002-09-30 | 2003-09-10 | 王级仁 | Leakage-resistant water meter |
-
2003
- 2003-09-17 CN CNB031592759A patent/CN100408984C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936430B (en) * | 2006-04-03 | 2010-05-12 | 美新半导体（无锡）有限公司 | Microleak automatic protection apparatus based on microflow detection |
| CN100388324C (en) * | 2006-06-30 | 2008-05-14 | 常州信力汉克电子有限公司 | Output converter of gas volume corrector |
| CN102221437A (en) * | 2010-04-15 | 2011-10-19 | 宝山钢铁股份有限公司 | Pipeline air pressure on-line detector and detection method |
| CN102221437B (en) * | 2010-04-15 | 2012-11-14 | 宝山钢铁股份有限公司 | Pipeline air pressure on-line detector and detection method |
| CN102305646A (en) * | 2011-05-10 | 2012-01-04 | 安徽润尔兴仪表有限公司 | Intelligent anti-leakage electromagnetic flowmeter |
| CN112345019A (en) * | 2020-10-22 | 2021-02-09 | 雷波县竹苑春酿酒有限公司 | Automatic metering device for wine making |
| CN112345019B (en) * | 2020-10-22 | 2024-01-23 | 雷波县竹苑春酿酒有限公司 | Automatic metering device for wine making |
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| Publication number | Publication date |
|---|---|
| CN100408984C (en) | 2008-08-06 |
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Granted publication date: 20080806 Termination date: 20110917 |