CN102419297A - Piston-type constant-flow controllable airflow source pressure measuring device - Google Patents
Piston-type constant-flow controllable airflow source pressure measuring device Download PDFInfo
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- CN102419297A CN102419297A CN2011102377032A CN201110237703A CN102419297A CN 102419297 A CN102419297 A CN 102419297A CN 2011102377032 A CN2011102377032 A CN 2011102377032A CN 201110237703 A CN201110237703 A CN 201110237703A CN 102419297 A CN102419297 A CN 102419297A
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Abstract
The invention provides a piston-type constant-flow controllable airflow source pressure measuring device which is characterized by comprising a linear motion sucking system and a measurement control system, wherein the linear motion sucking system is composed of a sucking piston, a lead screw connected with a piston rod and a servomotor driving the lead screw to rotate; the measurement control system is composed of a working interface, a test fixture, a pressure difference sensor, a temperature sensor, a limit switch and a controller; the working interface is arranged at an air outlet at the front end of a piston cylinder body; the test fixture is in air-path connection with the working interface through a working electromagnetic valve; the pressure difference sensor and the temperature sensor are arranged on the test fixture; the limit switch is used for limiting the movement area of the piston rod; and the controller is used for controlling the operation of electrical components and the signal transmission. The device can measure the suction resistance of a cigarette suction standard rod and a ventilation rate standard rod, can realize the pressure measurement and development work at different flow, can perform autocontrol and complete operation through the setting program of the controller, provides accurate test data and is simple and convenient to operate.
Description
Technical field
The invention belongs to tobacco standard of instruments utensil calibrating field, concretely, is a kind of piston type constant current may command air flow source gaging pressure device that is used for cigarette master bar and calibrating of ventilation rate master bar standard utensil or research.
Background technology
The Cigarette Draw Resistance master bar is to be used for calibrating relevant tobacco detecting instrument with the ventilation rate master bar, makes detecting instrument reach normal operating conditions, a Grad of the corresponding correlation parameter of each standard utensil.Therefore, the calibrating of Cigarette Draw Resistance master bar and ventilation rate master bar is whether accurately the relevant tobacco detecting instrument of influence detects data important step.When calibrating Cigarette Draw Resistance standard utensil, adopt CFO (critical flow orifice) method in the past, formed constant current; The flow of the constant current air-flow that CFO forms is that CFO is intrinsic, and is unadjustable and change, to tobacco standard of instruments utensil calibrating field; The CFO aperture is very little, and the transonic high flow velocities of the air-flow in the hole, can produce certain heat; Cause energy loss; Can't compensate through gas flow temperature in the detection hole, also forming flow increases and problems such as decay with the resistance on the current path, produces actual gas flow and CFO theoretical delivery than large deviation.
Summary of the invention
The object of the invention is just to the situation of above-mentioned prior art and a kind of piston type constant current may command air flow source gaging pressure device of special development; This device can measure the resistance to suction of Cigarette Draw Resistance master bar and ventilation rate master bar; Can be implemented in the pressure survey research work under the different flow; And can control automatically through the setting program of controller and accomplish operation, simple to operation.
Substantive principle of work of the present invention is: control system is according to feedback signals such as each position temperature, differential pressure pickups; Through compensation operation, the technical requirement according to setting sends instruction; By the piston suction of driven by servomotor, the piston constant-speed operation produces the constant current air-flow; In the gas circuit stable air-flow the piston mouth is gone out and tested utensil between, form stable pressure reduction between measuring appliance and the atmosphere.
The objective of the invention is to realize: piston type constant current may command air flow source gaging pressure device through following technical scheme; Comprise rectilinear motion suction system and Measurement and Control System, said rectilinear motion suction system is made up of the servomotor that suction piston, the leading screw that is connected with piston rod and driving leading screw rotate; The detection clamp that said Measurement and Control System is connected with the working interface gas circuit by the working interface that is installed in piston/cylinder front end gas outlet place, through the working electromagnet valve, the controller that is arranged on differential pressure pickup and temperature sensor on the detection clamp, is used for the limit switch between limited piston bar motor area and is used to control above-mentioned electric component work and signal transmission constitute; On working interface, also be provided with the gas circuit that feeds atmosphere, and backhaul solenoid valve and silencer-filter are installed on gas circuit.
Leading screw laterally arranges with the suction piston each other in the present invention, and piston rod is connected with screw on being sleeved on leading screw through contiguous block.Leading screw one end is connected with servomotor is coaxial through shaft coupling.
Be provided with the O RunddichtringO at the detection clamp spigot, the sealing effectiveness when guaranteeing that tested standard utensil embeds this jig.
The course of work of the present invention is following:
The rectilinear motion suction system is to be rotated by the driven by servomotor leading screw; Make screw carry out rectilinear motion along leading screw; Screw is connected through contiguous block with piston rod, and promptly piston is drawn by screw, and moves with the screw synchronous linear; Piston nose in piston cylinder forms the air-flow of malleation or negative pressure as required, and this air communication is crossed drawing of working interface and supplied experiments of measuring to use.
The detection clamp and the jig interface of introducing working air current that comprise fixing standard utensil to be detected in the Measurement and Control System; Comprise and be used to measure the flow through temperature sensor of standard utensil end gas flow temperature and the differential pressure pickup of measurement standard utensil resistance to suction value; Comprise working electromagnet valve and backhaul solenoid valve that the control air communication is crossed; The controller and the limit switch that is used for the screw sports limiting that comprise this device.
Maximum characteristics of the present invention are: can measure the resistance to suction of Cigarette Draw Resistance master bar and ventilation rate master bar; Be implemented in the pressure survey research work under the different flow; And can control automatically through the setting program of controller and accomplish operation; Accurate test figure is provided, simple to operation.
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Description of drawings
Fig. 1 principle of work synoptic diagram of the present invention
Fig. 2 structural representation of the present invention
Fig. 3 detection clamp and cigarette prop up the grafting synoptic diagram of shape resistance to suction master bar
Among Fig. 1-3,1, piston/cylinder, 2, piston, 3, piston rod, 4, piston seat, 5, contiguous block; 6, screw, 7, leading screw, 8, the leading screw seat, 9, shaft coupling, 10, servomotor, 11, working interface; 12, working electromagnet valve, 13, the backhaul solenoid valve, 14, differential pressure pickup, 15, temperature sensor, 16, detection clamp, 17, the jig interface; 18, silencer-filter, 19, limit switch, 20, controller, 21, cigarette props up shape resistance to suction master bar (standard utensil), 22, " O " RunddichtringO.
Among Fig. 1-2: ┄ ┄ ┄ is electrically connected, and---gas circuit connects.
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Embodiment
The present invention further describes below in conjunction with accompanying drawing:
Shown in Fig. 1-3; Piston type constant current may command air flow source measuring pressure experimental provision of the present invention comprises the suction piston of being made up of garden cylinder-piston cylinder body 1, piston 2 and piston rod 3; The suction piston is fixed on the base plate through piston seat 4, and the piston rod 3 of suction piston is connected through the screw 6 of moving linearly on contiguous block 5 and the screw mandrel 7, and leading screw is fixed on the base plate by the leading screw seat 8 at two ends; And leading screw 7 is arranged in parallel with the suction piston mutually each other; One end of leading screw 7 links to each other with the axle coaxial core of servomotor 10 through shaft coupling 9, is provided with a working interface 11 at an end of piston/cylinder 1, is connected with working electromagnet valve 12 and backhaul solenoid valve 13 through pipeline; The working electromagnet valve 12 of wherein leading up to communicates with detection clamp 16, and another road leads to atmosphere through backhaul solenoid valve 13 through silencer-filter 18.
Two ends are provided with limit switch 19 between the two ends of leading screw 7 and screw 6 motor areas; Jig interface 17 places at detection clamp 16 are provided with working hole differential pressure pickup 14; In detection clamp 16, be mounted with working hole temperature sensor 15, and be provided with " O " RunddichtringO 22 that is used to seal for embedding detection clamp 16 with tested standard utensil.
Each item function of this device realizes accomplishing by working routine by controller.
Standard utensil detection clamp 16 in this device can embed cigarette and prop up shape resistance to suction master bar 21.
This device in use can be selected negative pressure work measurement and malleation work measurement condition, that is: if piston 2 is when moving away from working interface 11 directions, working electromagnet valve 12 is opened, and backhaul solenoid valve 13 cuts out; Piston 2 is when moving near working interface 11 directions, and backhaul solenoid valve 13 is opened, and working electromagnet valve 12 cuts out; Be negative pressure work measurement condition this moment.Otherwise if piston 2 is when moving near working interface 11 directions, working electromagnet valve 12 is opened, and backhaul solenoid valve 13 cuts out; Piston 2 is when moving away from working interface 11 directions, and backhaul solenoid valve 13 is opened, and working electromagnet valve 12 cuts out; Be malleation work measurement condition this moment.
In use, positive negative pressure condition of work is set on controller 20 according to the actual detected requirement.
When setting forth this device method of application below, be example with the negative pressure condition of work, the interior sectional area of garden cylinder-piston cylinder body 1 is evenly to equate.
Use-pattern 1 is following:
Use piston type constant current may command air flow source wall pressure experimental provision calibrating cigarette to prop up shape resistance to suction master bar 21; Cigarette is propped up shape resistance to suction master bar 21 insert detection clamp 16; On controller 20, select constant current suction mode, and set working air current theoretical delivery value, standard temperature value, the ambient atmosphere pressure value that defined is measured in calibrating, starter gear on controller 20; Controller 20 calculates working air current actual flow value according to temperature value, the ambient atmosphere pressure value of the reality that the working air current theoretical delivery value of setting, temperature value, standard atmospheric pressure value and temperature sensor 15 are measured through air fluid mechanics principle and formula; Controller 20 makes it to obtain corresponding working air current flow value according to the rotating speed of this value control servomotor, and working electromagnet valve 12 is opened in the work period, backhaul solenoid valve 13 cuts out; After stablizing, read the value of differential pressure pickup; Be the resistance to suction value that this cigarette props up shape resistance to suction master bar 21, piston 2 moves to limit switch 19 and gets between flyback period, and working electromagnet valve 12 cuts out, backhaul solenoid valve 13 is opened; Limit switch 19 back pistons 2 motions up to the other end stop, and install next round test job to be measured.
Claims (4)
1. piston type constant current may command air flow source gaging pressure device; It is characterized in that: comprise rectilinear motion suction system and Measurement and Control System, said rectilinear motion suction system is made up of the servomotor that suction piston, the leading screw that is connected with piston rod and driving leading screw rotate; The detection clamp that said Measurement and Control System is connected with the working interface gas circuit by the working interface that is installed in piston/cylinder front end gas outlet place, through the working electromagnet valve, the controller that is arranged on differential pressure pickup and temperature sensor on the detection clamp, is used for the limit switch between limited piston bar motor area and is used to control above-mentioned electric component work and signal transmission constitute; On working interface, also be provided with the gas circuit that feeds atmosphere, and backhaul solenoid valve and silencer-filter are installed on gas circuit.
2. piston type constant current may command air flow source gaging pressure device according to claim 1 is characterized in that: leading screw laterally arranges with the suction piston each other, and piston rod is connected with screw on being sleeved on leading screw through contiguous block.
3. piston type constant current may command air flow source gaging pressure device according to claim 1 and 2 is characterized in that: leading screw one end is connected with servomotor is coaxial through shaft coupling.
4. piston type constant current may command air flow source gaging pressure device according to claim 1 is characterized in that: be provided with the O RunddichtringO at the detection clamp spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102377032A CN102419297A (en) | 2011-08-18 | 2011-08-18 | Piston-type constant-flow controllable airflow source pressure measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102377032A CN102419297A (en) | 2011-08-18 | 2011-08-18 | Piston-type constant-flow controllable airflow source pressure measuring device |
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| CN102419297A true CN102419297A (en) | 2012-04-18 |
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| CN2011102377032A Pending CN102419297A (en) | 2011-08-18 | 2011-08-18 | Piston-type constant-flow controllable airflow source pressure measuring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300446A (en) * | 2015-10-26 | 2016-02-03 | 上汽通用五菱汽车股份有限公司 | Testing device and testing method of performance of fuel tank cap in dust environment |
| CN106461523A (en) * | 2014-05-29 | 2017-02-22 | 吉瑞高新科技股份有限公司 | Electronic cigarette performance test apparatus and test method |
| CN109085110A (en) * | 2018-09-17 | 2018-12-25 | 河南中烟工业有限责任公司 | Check device and its check method during a kind of single step ventilation rate master bar |
| CN109085111A (en) * | 2018-09-17 | 2018-12-25 | 河南中烟工业有限责任公司 | A kind of active dual Piston ventilation rate master bar calibrating installation and its calibration method |
| CN109478074A (en) * | 2016-07-28 | 2019-03-15 | 株式会社富士金 | Pressure flow-rate controller |
| CN112229757A (en) * | 2020-10-10 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Method for evaluating rapid conformity of cigarette and filter stick pressure drop |
| CN112857947A (en) * | 2021-04-06 | 2021-05-28 | 中国烟草总公司郑州烟草研究院 | Method for generating aerosol of cigarette smoke heated by standard concentration, temperature and pressure |
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| CN201083672Y (en) * | 2007-10-19 | 2008-07-09 | 中国科学院沈阳科学仪器研制中心有限公司 | Auto-calibration system for absorption and resistance instrument |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461523A (en) * | 2014-05-29 | 2017-02-22 | 吉瑞高新科技股份有限公司 | Electronic cigarette performance test apparatus and test method |
| CN106461523B (en) * | 2014-05-29 | 2019-10-15 | 吉瑞高新科技股份有限公司 | Electronic cigarette performance testing device and test method |
| CN105300446A (en) * | 2015-10-26 | 2016-02-03 | 上汽通用五菱汽车股份有限公司 | Testing device and testing method of performance of fuel tank cap in dust environment |
| CN109478074A (en) * | 2016-07-28 | 2019-03-15 | 株式会社富士金 | Pressure flow-rate controller |
| CN109478074B (en) * | 2016-07-28 | 2021-08-24 | 株式会社富士金 | Pressure type flow rate control device |
| CN109085111B (en) * | 2018-09-17 | 2023-08-18 | 河南中烟工业有限责任公司 | Active double-piston type ventilation rate standard rod calibration device and calibration method thereof |
| CN109085110A (en) * | 2018-09-17 | 2018-12-25 | 河南中烟工业有限责任公司 | Check device and its check method during a kind of single step ventilation rate master bar |
| CN109085111A (en) * | 2018-09-17 | 2018-12-25 | 河南中烟工业有限责任公司 | A kind of active dual Piston ventilation rate master bar calibrating installation and its calibration method |
| CN109085110B (en) * | 2018-09-17 | 2023-08-18 | 河南中烟工业有限责任公司 | One-step ventilation rate standard rod period checking device and checking method thereof |
| CN112229757A (en) * | 2020-10-10 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Method for evaluating rapid conformity of cigarette and filter stick pressure drop |
| CN112229757B (en) * | 2020-10-10 | 2024-03-29 | 中国烟草总公司郑州烟草研究院 | Method for evaluating quick conformity of pressure drop of cigarette and filter stick |
| CN112857947B (en) * | 2021-04-06 | 2023-03-17 | 中国烟草总公司郑州烟草研究院 | Method for generating aerosol of cigarette smoke heated by standard concentration, temperature and pressure |
| CN112857947A (en) * | 2021-04-06 | 2021-05-28 | 中国烟草总公司郑州烟草研究院 | Method for generating aerosol of cigarette smoke heated by standard concentration, temperature and pressure |
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Application publication date: 20120418 |