CN107966186A - A kind of continuous type gas collection and metering device - Google Patents
A kind of continuous type gas collection and metering device Download PDFInfo
- Publication number
- CN107966186A CN107966186A CN201810025797.9A CN201810025797A CN107966186A CN 107966186 A CN107966186 A CN 107966186A CN 201810025797 A CN201810025797 A CN 201810025797A CN 107966186 A CN107966186 A CN 107966186A
- Authority
- CN
- China
- Prior art keywords
- gas
- piston
- metering device
- collector
- gas collection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 17
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 62
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Abstract
It is big in order to solve existing gas collector friction the invention discloses the gas collection and metering device of a kind of continuous work, can not continuously collect and the problem of accurate measurement, main feature have it is following some：1. the shortcomings that can not collecting gas when filling up single collector exhaust by covering gas collector more, realize the continuous collection of gas.1. the position of piston when being run by laser range finder measuring device, pressure sensor, which measures the pressure of cylinder interior collection gas and inputs computer system processor, realizes that the volume metering 2. for collecting gas makes conduit and cylinder inner wall formation mercury seal ring by processing conduit in piston outer shroud and injecting mercury, it can not only realize sealing during gas collection, more can greatly reduce frictional resistance when piston is run in the device course of work.
Description
Technical field
The present invention relates to a kind of gas collection and metering device for being capable of continuous work, it is particularly suitable for needing accurate measurement
Gas collection and metering with low friction resistance.
Background technology
At present, known gas collector is by cylinder, piston, driving device composition.Piston is generally close using rubber
Seals, need to make its deformation by extruding rubber seal to reach sealing effect, to realize sealing during piston operation,
Therefore in piston operational process, it is necessary to overcome bigger frictional resistance, and can even be blocked sometimes in operational process
Phenomenon, and can not realize that the continuous of a large amount of gases is collected and metering, so as to limit the application of gas collector.
The content of the invention
In order to solve the problems, such as that existing gas collector exists, the present invention provides a kind of gas for being capable of continuous work
Body collection device, the device employ special sealing means, can greatly reduce frictional resistance during piston operation, and can be real
Existing continual gas collection, cylinder are interior total to collected gas using high-precision distance measuring sensor and pressure sensor satisfaction
The metering requirements of amount.
The technical solution adopted by the present invention to solve the technical problems is：Realize that piston is transported as sealing material using mercury
Sealing during row；The position of piston is accurately measured by laser range finder, pressure sensor accurately measures internal cylinder pressure, into
And the volume of gas collected by measuring；Using multiple gas collector parallel operations, computer system is by receiving, handling laser
The signal of rangefinder and pressure sensor carrys out the opening and closing of control valve and provides signal for PID controller so as to control motor to operate
And then realize the continuous collection of gas.
The invention has the advantages that when reducing device work, frictional resistance when piston is run realizes gas
It is continuous to collect, and can realize the volume metering of gas.
Brief description of the drawings
The present invention is further described with example below in conjunction with the accompanying drawings, in order to illustrate more clearly of the technology of present example
Scheme, below will describe example in required attached drawing and be briefly described, it should be apparent that, drawings in the following description are only
Only it is of the invention, protects some examples, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is inventive piston structure diagram.
Fig. 2 is gas collector schematic diagram of the present invention.
Fig. 3 is the system structure schematic diagram of whole device.
1- annulus conduit in figure, 2- pistons, 3- pressure sensors, 4- limiters, 5- mercury injection orifices, 6- laser rangings
Instrument, 7- flexible cords, 8- cylinders, 9- valves 3,10-2 gas collector exhaust outlets, 11-4 solenoid valves, (11,10 with figure in not
Symbol, valve numbering and pressure sensor below, laser range finder are intended to number) 12-2 pressure sensors, 13-2 motors,
14-2 PID controllers, 15- pulleys, 16-2 laser range finders, 17- computer systems, 18-1 laser range finders, 19-1
Number PID controller, 20-1 motors, 21-1 pressure sensors, 22-1 gas collector exhaust outlets, 23-1 solenoid valves,
24-2 solenoid valves, 25- air inlets.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is piston structure schematic diagram used in gas collector.Such as Fig. 1 pistons（2）Shape is disc, material
Can be organic glass, nylon, polytetrafluoroethylene (PTFE) opens an annular channel in disk center side（1）, the shape of conduit is square
Shape.When in use, the annular groove of piston plate and cylinder inner wall form closed annular channel, are formed by injecting mercury into conduit
Sealing when mercury seal ring is to realize that piston is run in cylinder.
Fig. 2 is gas collector structure diagram.As Fig. 2 gas collectors include annulus conduit（1）, piston（2）, pressure
Sensor（3）, limiter（4）, mercury injection orifice（5）, laser range finder（6）, flexible cord（7）, cylinder（8）.Before initial use,
Flexible cord is pulled by motor（7）Band piston（2）Rise so that annulus conduit（1）With mercury injection orifice（5）In same horizontal line
On, mercury is expelled to annulus conduit with syringe at this time（1）Interior and cylinder（8）Inner wall forms mercury seal ring.Using
Cheng Zhong, to prevent mercury from leaking, by mercury injection orifice（5）Position as piston（2）Position upper limit value during operation.Pressure passes
Sensor（3）, laser range finder（6）Measure respectively in piston operational process, the pressure of cylinder interior gas and the position of piston, it is logical
Communication cable is crossed to be connected with computer system.Whole device is in limiter（4）Under the action of holding position fix.
Fig. 3 is the gas collection and metering device schematic diagram for being capable of continuous work.Received as Fig. 3 devices employ two gases
The structure of storage parallel connection, realizes the rotation work of two collectors, it is achieved thereby that gas is continuous using the opening and closing of solenoid valve
Collect.Before collecting gas, No. 2 solenoid valves（24）Keep it turned on, No. 1 solenoid valve（23）, No. 3 solenoid valves（9）, No. 4 solenoid valves
（11）Remain closed.Pass through No. 1 pressure sensor（21）The pressure of No. 1 cylinder interior is measured, the position of piston is initial at this time
Position.Work as air inlet（25）When thering is the gas to come in, pass through and control No. 1 PID controller（19）To open No. 1 motor（19）, and examine
The measurement data of pressure measurement force snesor 1, and by the rotation of PID controller control motor, the pressure in No. 1 cylinder is maintained one
The value of a stabilization, allows gas to enough continuously into No. 1 cylinder when No. 1 laser range finder（18）Measure the position of piston
When reaching setting upper limit value, No. 1 motor（20）Stop motion, closes No. 2 solenoid valves（24）, computer system（17）Record 1
Laser range finder（18）, No. 1 pressure sensor（22）Data, open No. 1 solenoid valve（23）, No. 1 PID controller（19）Control
No. 1 motor（20）Reversion, piston move downward under gravity, and gas is discharged No. 1 cylinder, first when being fallen under piston
During beginning position, No. 1 solenoid valve is closed（23）, No. 1 motor（20）Close；When No. 1 gas collector is vented（Close No. 2 electromagnetism
Valve（24）When）, open No. 3 solenoid valves（9）, No. 2 gas collectors are started to work, by controlling No. 2 PID controllers（14）To open
Open No. 2 motors（13）, the initial position of No. 2 pistons is recorded, and detect No. 2 pressure sensors（12）Data, and controlled by PID
The rotation of device control motor processed, makes the pressure in No. 2 cylinders maintain a stable value, allows gas to enough continuously enter
No. 2 cylinders.When No. 2 laser range finders（16）When detecting that the position of piston 2 reaches setting upper limit value, No. 2 motors（13）Stop
Movement, closes solenoid valve 9, and computer system records No. 2 laser range finders（16）, No. 2 pressure sensors（12）Data, open
No. 4 solenoid valves（11）, No. 2 PID controllers（14）Control No. 2 motors（13）Reversion, piston move under gravity, will
Gas discharges cylinder 2, when falling on initial position 2 under piston 2, closes No. 4 solenoid valves（11）, No. 2 motors（13）Close；2
During the exhaust of number gas collector（Close No. 3 solenoid valves（9）When）, open No. 2 solenoid valves（24）No. 1 gas collector starts next
The work of a circulation.
Which when air inlet is died, no matter being collector at this time in gas collection, surveyed with the operating pressure sensor of motor
Obtain pressure to decline, computer system realizes the motor reversal by Control PID controller and closes corresponding air inlet electricity at this time
Magnet valve, opens exhaust solenoid valve and completes degassing function.And pressure sensor in the gas collector is recorded, the number of laser range finder
Factually show the accurate measurement of gas.In case gas collection next time next time.
Claims (6)
1. a kind of continuous type gas collection and metering device, including gas collector and computer system (17), it is special
Sign is：The gas collector has two, including the No.1 gas collector of parallel operation and No. two gas collectors, institute
The computer system (17) stated is connected with No.1 PID controller (19), No. two PID controllers (14) respectively by conducting wire, institute
The No.1 PID controller (19) stated controls the gas collection of No.1 gas collector to work by No.1 motor (20), described
No. two PID controllers (14) control the gas collection of No. two gas collectors to work by No. two motors (13), the No.1
Gas collector bottom is provided with No.1 solenoid valve (22) and No. two solenoid valves (24), and No. two gas collector bottoms are provided with three
Number solenoid valve (9) and No. four solenoid valves (11), No.1, No. two, No. three, No. four solenoid valves pass through with computer system (17) it is logical
Interrogate cable connection.
2. continuous type gas collection according to claim 1 and metering device, it is characterised in that：The gas
Collector includes discoidal novel piston (2), limiter (4), mercury injection orifice (5) and cylinder (8), the cylinder (8)
Upper end side wall is provided with mercury injection orifice (5), and cylinder (8) outer wall is both provided with limiter (4), the novel piston (2) up and down
It is slidably connected between the inner wall of cylinder (8) by mercury seal.
3. continuous type gas collection according to claim 1 and metering device, it is characterised in that：Two gases are received
The bottom of storage is both provided with pressure sensor, top is both provided with laser range finder, and pressure sensor is equal with laser range finder
It is connected by communication cable with computer system (17), realizes the volume metering function of gas.
4. continuous type gas collection according to claim 1 and metering device, it is characterised in that：Two gases are received
Storage is respectively provided with motor, solenoid valve, and PID controller is connected by communication cable with computer system (17), realizes the company of gas
Continuous collecting function.
5. continuous type gas collection according to claim 2 and metering device, it is characterised in that：Described is new
Piston (2) center side is provided with annular channel (1), passes through the injection mercury formation mercury seal ring realization into annular channel (1)
Sealing when novel piston (2) slides in cylinder (8).
6. continuous type gas collection according to claim 2 and metering device, it is characterised in that：Described in each
It is respectively connected with flexible cord (7) on novel piston (2), the flexible cord (7) in No.1 gas collector is connected with No.1 motor (20), and two
Flexible cord (7) in number gas collector is connected with No. two motors (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025797.9A CN107966186A (en) | 2018-01-11 | 2018-01-11 | A kind of continuous type gas collection and metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025797.9A CN107966186A (en) | 2018-01-11 | 2018-01-11 | A kind of continuous type gas collection and metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107966186A true CN107966186A (en) | 2018-04-27 |
Family
ID=61993972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810025797.9A Pending CN107966186A (en) | 2018-01-11 | 2018-01-11 | A kind of continuous type gas collection and metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107966186A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803693A (en) * | 2018-05-17 | 2018-11-13 | 中国科学技术大学 | A kind of electronegative gas injection apparatus maintaining dynamic pressure |
| CN109115565A (en) * | 2018-08-03 | 2019-01-01 | 姚丁元 | A kind of mine gas detection device with gas collecting function |
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| DE102014013992A1 (en) * | 2014-09-20 | 2016-03-24 | Festo Ag & Co. Kg | Piston of a fluid-operated linear drive and associated linear drive |
| CN106781903A (en) * | 2017-03-24 | 2017-05-31 | 武汉轻工大学 | Piston-type pressure source determines the experimental provision of multiple fluid pressure bulk temperature relation |
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2018
- 2018-01-11 CN CN201810025797.9A patent/CN107966186A/en active Pending
Patent Citations (10)
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| KR20110117465A (en) * | 2010-04-21 | 2011-10-27 | 주식회사 씨엔엘에너지 | Apparatus for continuous gas separation and method for continuous gas separation |
| CN201762404U (en) * | 2010-08-31 | 2011-03-16 | 吕军 | Device for carrying out automatic continuous cleanliness detection on multiple sampling points |
| CN101988151A (en) * | 2010-08-31 | 2011-03-23 | 吕军 | Continuous annealing furnace gas cleanliness detecting system |
| CN103149137A (en) * | 2011-12-06 | 2013-06-12 | 长江大学 | Constant-pressure steady-state gas permeability measuring instrument |
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| DE102014013992A1 (en) * | 2014-09-20 | 2016-03-24 | Festo Ag & Co. Kg | Piston of a fluid-operated linear drive and associated linear drive |
| CN205047214U (en) * | 2015-10-20 | 2016-02-24 | 晏林玉 | Oil well liquid measure automatic measurement analytical equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108803693A (en) * | 2018-05-17 | 2018-11-13 | 中国科学技术大学 | A kind of electronegative gas injection apparatus maintaining dynamic pressure |
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| CN109115565A (en) * | 2018-08-03 | 2019-01-01 | 姚丁元 | A kind of mine gas detection device with gas collecting function |
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