CN204461970U - A kind of measurement mechanism controlling the standard instruments calibrating of air flow source - Google Patents
A kind of measurement mechanism controlling the standard instruments calibrating of air flow source Download PDFInfo
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- CN204461970U CN204461970U CN201520179323.1U CN201520179323U CN204461970U CN 204461970 U CN204461970 U CN 204461970U CN 201520179323 U CN201520179323 U CN 201520179323U CN 204461970 U CN204461970 U CN 204461970U
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Abstract
A kind of measurement mechanism controlling the standard instruments calibrating of air flow source, comprise straight line suction system, measure test macro and for control and suck system with measure the control system of test macro, it is characterized in that: described measurement test macro comprises the constant voltage flow measurement unit for examining and determine cigarette master bar and ventilation rate master bar standard instruments, with the constant current pressure measuring unit for examining and determine air permeance for cigarette paper standard instruments, Unit two be parallel form be connected to be installed on gas outlet place, piston/cylinder front end in straight line suction system working interface on, and the test pattern conversion between Unit two is controlled by the mode conversion switch arranged in the controls.Outstanding advantages of the present utility model is: can realize melting constant current pressure measurement and constant voltage flow measurement function in one, can realize calibrating and the measurement of air permeability standard instruments, Cigarette Draw Resistance master bar and ventilation rate on same apparatus.
Description
technical field:
The utility model belongs to tobacco standard of instruments utensil calibrating field, concretely, be a kind of measurement mechanism controlling the standard instruments calibrating of air flow source, both can be used for cigarette master bar and ventilation rate master bar standard instruments calibrating (constant voltage flow measurement), also can be used for cigarette paper air permeability standard instruments calibrating (constant current pressure measurement).
background technology:
Usually, when examining and determine air permeance for cigarette paper standard instruments, providing malleation by pressurized air, adopting throttle style, being monitored in gas circuit by flowmeter, by regulating throttling valve to make the pressure reduction at air permeability standard instruments two ends reach certain value, obtaining air permeability parameter.Air permeance for cigarette paper flow rate disc has dividing of malleation, negative pressure, and flow range 0.05L/min-60L/min, in laboratory conditions, negative pressure generator can not provide the negative pressure flow meeting the requirement of large discharge dish.CN102507408A discloses a kind of piston-type constant-pressure controllable airflow source flow measurement device, can measure the standard instruments of air permeance for cigarette paper, experimental study work under different set pressure differential can be realized in the research field of tobacco laboratory specialized equipment.
When examining and determine Cigarette Draw Resistance standard instruments, adopt CFO(critical flow orifice) method formation constant current.The flow of the constant current air-flow that CFO is formed is that CFO is intrinsic, unadjustable or change, and CFO aperture is very little, and the transonic high flow velocities of air-flow in hole, certain heat can be produced, cause energy loss, cannot be compensated by gas flow temperature in detect aperture, also form flow to increase and the problems such as decay with the resistance on current path, produce actual gas flow and CFO theoretical delivery relatively large deviation.CN102419297A discloses a kind of piston-type constant-flow controllable airflow source pressure measuring device, can measure, can realize the pressure survey research work under different flow to the resistance to suction of Cigarette Draw Resistance master bar and ventilation rate master bar.
Air permeance for cigarette paper standard instruments calibrating or Cigarette Draw Resistance master bar and ventilation rate master bar calibrating time, be completed by air permeance for cigarette paper standard instruments calibrating installation, Cigarette Draw Resistance master bar and ventilation rate master bar calibrating installation two kinds of instruments respectively, calibrating and the measurement of air permeability standard instruments, Cigarette Draw Resistance master bar and ventilation rate can not be realized on same apparatus.
summary of the invention:
The purpose of this utility model is just for the situation of above-mentioned prior art and can realizing of developing specially melts constant current pressure measurement and constant voltage flow measurement in calibrating installations such as one.This device both can measure the resistance to suction of Cigarette Draw Resistance master bar and ventilation rate master bar, can realize the pressure survey research work under different flow; This device also possesses cigarette paper air permeability standard instruments function of measuring simultaneously, can realize experimental study work under different set pressure differential in the research field of tobacco laboratory specialized equipment.
The purpose of this utility model is achieved through the following technical solutions:
A kind of measurement mechanism controlling the standard instruments calibrating of air flow source, comprise straight line suction system, measure test macro and for control and suck system with measure the control system of test macro, wherein: described measurement test macro comprises the constant voltage flow measurement unit for examining and determine cigarette master bar and ventilation rate master bar standard instruments, with the constant current pressure measuring unit for examining and determine air permeance for cigarette paper standard instruments, Unit two be parallel form be connected to be installed on gas outlet place, piston/cylinder front end in straight line suction system working interface on, and the test pattern conversion between Unit two is controlled by the mode conversion switch arranged in the controls,
Described straight line suction system is by pumping piston, the leading screw be connected with piston rod and drive the servomotor of screw turns to form, and the rotation of servomotor and the limit switch in piston rod movement interval control by control system;
Described constant voltage flow measurement unit comprises working interface, working electromagnet valve, front and back end surveying work solenoid valve, front and back end isolation solenoid valve, flowmeter, constant voltage flow measurement standard instruments jig, jig front port and is located at the differential pressure pickup of this jig inlet end, the temperature sensor be located in this jig, and all solenoid valves, differential pressure pickup and temperature sensor in this unit are all electrically connected with control system; Described flowmeter can be mass flowmeter, may also be volumetric displacement meter.
Described constant current pressure measuring unit comprises working interface, working electromagnet valve, constant current pressure measurement standard instruments jig, jig front port and is located at the pressure transducer of this jig inlet end, the temperature sensor be located in this jig, and working electromagnet valve, pressure transducer and temperature sensor in this unit are all electrically connected with control system;
Working interface is also provided with the gas circuit passing into air, and backhaul solenoid valve and silencer-filter are installed in gas circuit.
In the utility model, be connected by shaft coupling between the leading screw in described straight line suction system and servomotor, in the position, front and back end of leading screw, front and back end limit switch be installed.
Described straight line suction system can be one group, also can be organize parallel connection more; Described pumping piston can be one group or organize parallel connection more.
Malleation when the different motion direction of its piston can form measurement and negative pressure two states.
Described control system is made up of servomotor kinetic control system, operation and display system, signal transacting control system, Measurement and Control System etc.
Outstanding advantages of the present utility model is: can realize melting constant current pressure measurement and constant voltage flow measurement function in one, can realize calibrating and the measurement of air permeability standard instruments, Cigarette Draw Resistance master bar and ventilation rate on same apparatus.Utilize device of the present utility model both can measure the resistance to suction of Cigarette Draw Resistance master bar and ventilation rate master bar, the pressure survey research work under different flow can be realized; Also possess cigarette paper air permeability standard instruments function of measuring simultaneously, realize experimental study work under different set pressure differential.
Accompanying drawing explanation
Fig. 1 is structure of the present utility model and annexation schematic diagram.
Number in the figure: 1, control system, 2, front limit switch, 3, rear limit switch, 4, rear leading screw seat, 5, leading screw, 6, screw, 7, contiguous block, 8, piston seat, 9, front leading screw seat, 10, shaft coupling, 11, servomotor, 12, piston/cylinder, 13, piston rod, 14, piston, 15, working interface, 16, working electromagnet valve, 17, backhaul solenoid valve, 18, silencer-filter, 19-1, constant current pressure measurement jig front port, 19-2, constant voltage flow measurement jig front port, 20-1, constant current pressure measurement standard instruments jig, 20-2, constant voltage flow measurement standard instruments jig, 21-1, temperature sensor, 21-2, temperature sensor, 22, front end surveying work solenoid valve, 23, isolation solenoid valve is measured in front end, and 24, isolation solenoid valve is measured in rear end, and 25, rear end surveying work solenoid valve, 26, flowmeter, 27, AVSV Air Vent Solenoid Valve is measured in front end, and 28, AVSV Air Vent Solenoid Valve is measured in rear end, and 29, differential pressure pickup, 30, pressure transducer, 31, mode conversion switch, 32, solenoid valve controller, 33, sensor data acquisition device.
In figure: ┄ ┄ ┄ gas circuit connects,---is electrically connected.
Embodiment
The utility model is described further below in conjunction with accompanying drawing:
As shown in Figure 1: a kind of measurement mechanism controlling the standard instruments calibrating of air flow source, comprise straight line suction system, measure test macro and for control and suck system with measure the control system of test macro, wherein: described measurement test macro comprises the constant voltage flow measurement unit for examining and determine cigarette master bar and ventilation rate master bar standard instruments, with the constant current pressure measuring unit for examining and determine air permeance for cigarette paper standard instruments, Unit two are that parallel form is connected to and is installed on the working interface (15) at gas outlet place, piston/cylinder front end in straight line suction system, and the test pattern conversion between Unit two is controlled by the mode conversion switch (31) arranged in the controls,
Described straight line suction system is by pumping piston (14), the leading screw (5) be connected with piston rod (13) and drive the servomotor of screw turns (11) to form, and the rotation of servomotor and the limit switch (2,3) in piston rod movement interval control by control system (1);
Described constant voltage flow measurement unit comprises working interface (15), working electromagnet valve (16), front and back ends surveying work solenoid valve (22,25), front and back ends measurement isolation solenoid valve (23,24), flowmeter 26, constant voltage flow measurement standard instruments jig (20-2), jig front port (19-2) and is located at the differential pressure pickup (29) of this jig inlet end, the temperature sensor (21-2) be located in this jig, and all solenoid valves in this unit, differential pressure pickup 29 and temperature sensor (21-2) are all electrically connected with control system (1); Described flowmeter (26) can be mass flowmeter, may also be volumetric displacement meter.
Described constant current pressure measuring unit comprises working interface (15), working electromagnet valve (16), constant current pressure measurement standard instruments jig (20-1), jig front port (19-1) and is located at the pressure transducer (30) of this jig inlet end, the temperature sensor (21-1) be located in this jig, and the working electromagnet valve in this unit, pressure transducer (3) and temperature sensor (21-1) are all electrically connected with control system (1);
Working interface (15) is also provided with the gas circuit passing into air, and backhaul solenoid valve (17) and silencer-filter (18) are installed in gas circuit.
In the utility model, leading screw (5) in described straight line suction system and being connected by shaft coupling (10) between servomotor (11), is provided with front and back end limit switch (2,3) in the position, front and back end of leading screw (5).
The utility model in use, is divided into " constant voltage flow measurement " and " constant current pressure measurement " two kinds of situations:
embodiment one: " constant voltage flow measurement " pattern
Existing composition graphs 1, is described below constant voltage effluent implementation process of the present utility model: on controller 1, select " constant voltage flow measurement " pattern by constant voltage effluent/constant current pressure measurement mode conversion switch 31.Now, the control system (1) of device, before, rear limit switch (2, 3), leading screw (5), shaft coupling (10), servomotor (11), piston/cylinder (12), piston rod (13), piston (14), working interface (15), working electromagnet valve (16), backhaul solenoid valve (17), silencer-filter (18), jig front port (19-2), standard instruments jig (20-2), temperature sensor (21-2), front end surveying work solenoid valve (22), isolation solenoid valve (23) is measured in front end, isolation solenoid valve (24) is measured in rear end, rear end surveying work solenoid valve (25), flowmeter (26), AVSV Air Vent Solenoid Valve (27) is measured in front end, AVSV Air Vent Solenoid Valve (28) is measured in rear end, differential pressure pickup 29 grade forms " constant voltage flow measurement " pattern.
Control system (1) is according to feedback signals such as each position gas temperature, pressure transducers, pass through compensation operation, according to the technical requirement of setting, send instruction, the piston suction driven by servomotor (11): tested utensil (20-2) pressure reduction indicator conditions is set, piston changes air flow rate in gas circuit by speed governing, and then cause tested utensil (20-2) pressure to change, when the pressure reduction of tested utensil (20-2) reach impose a condition time, keep this constant pressure, piston movement speed locks, thus forms stable air-flow; According to measurement demand, select the flowmeter (26) of flow test units in gas circuit, this gas flow is measured.
embodiment two: " constant current pressure measurement " pattern
Controller 1 selects " constant current pressure measurement " mode by constant voltage effluent/constant current pressure measurement mode conversion switch (31).Now, the control system (1), forward and backward limit switch (2,3), leading screw (5), shaft coupling (10), servomotor (11), piston/cylinder (12), piston rod (13), piston (14), working interface (15), working electromagnet valve (16), backhaul solenoid valve (17), silencer-filter (18), jig front port (19-1), standard instruments jig (20-1), temperature sensor (21-1), pressure transducer 30 etc. of device form " constant current pressure measurement " pattern.
This device is used to examine and determine cigarette shape resistance to suction master bar, cigarette shape resistance to suction master bar is inserted detection clamp (20-1), and the working air current theoretical delivery value of defined is measured in setting calibrating, standard temperature value, ambient atmosphere pressure value, at the upper starter gear of controller (1), controller (1) is according to the working air current theoretical delivery value of setting, temperature value, the temperature value of the reality that standard atmospheric pressure value and temperature sensor (21-1) are measured, ambient atmosphere pressure value goes out working air current actual flow value by air fluid mechanics principle and formulae discovery, controller (1) controls the rotating speed of servomotor (11) according to this value, make it to obtain corresponding working air current flow value, within the work period, working electromagnet valve (16) is opened, backhaul solenoid valve (17) cuts out, read the value of pressure transducer 30 after stabilization, be the resistance to suction value of this cigarette shape resistance to suction master bar, piston movement to rear limit switch (3) enters between flyback period, working electromagnet valve (16) cuts out, backhaul solenoid valve (17) is opened, until the motion of front end limit switch (2) back piston stops, device next round test job to be measured.
Claims (4)
1. one kind can control the measurement mechanism of the standard instruments calibrating of air flow source, comprise straight line suction system, measure test macro and for control and suck system with measure the control system of test macro, it is characterized in that: described measurement test macro comprises the constant voltage flow measurement unit for examining and determine cigarette master bar and ventilation rate master bar standard instruments, with the constant current pressure measuring unit for examining and determine air permeance for cigarette paper standard instruments, Unit two be parallel form be connected to be installed on gas outlet place, piston/cylinder front end in straight line suction system working interface on, and the test pattern conversion between Unit two is controlled by the mode conversion switch arranged in the controls,
Described straight line suction system is by pumping piston, the leading screw be connected with piston rod and drive the servomotor of screw turns to form, and the rotation of servomotor and the limit switch in piston rod movement interval control by control system;
Described constant voltage flow measurement unit comprises working interface, working electromagnet valve, front and back end surveying work solenoid valve, front and back end isolation solenoid valve, flowmeter, constant voltage flow measurement standard instruments jig, jig front port and is located at the differential pressure pickup of this jig inlet end, the temperature sensor be located in this jig, and all solenoid valves, differential pressure pickup and temperature sensor in this unit are all electrically connected with control system;
Described constant current pressure measuring unit comprises working interface, working electromagnet valve, constant current pressure measurement standard instruments jig, jig front port and is located at the pressure transducer of this jig inlet end, the temperature sensor be located in this jig, and working electromagnet valve, pressure transducer and temperature sensor in this unit are all electrically connected with control system;
Working interface is also provided with the gas circuit passing into air, and backhaul solenoid valve and silencer-filter are installed in gas circuit.
2. the measurement mechanism controlling the standard instruments calibrating of air flow source according to claim 1, be is characterized in that: be connected by shaft coupling between the leading screw in described straight line suction system and servomotor.
3. the measurement mechanism controlling the standard instruments calibrating of air flow source according to claim 1 and 2, is characterized in that: be provided with front and back end limit switch in the position, front and back end of leading screw.
4. the measurement mechanism controlling the standard instruments calibrating of air flow source according to claim 1, is characterized in that: the flow in described constant voltage flow measurement list counts mass flowmeter or volumetric displacement meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520179323.1U CN204461970U (en) | 2015-03-27 | 2015-03-27 | A kind of measurement mechanism controlling the standard instruments calibrating of air flow source |
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| CN201520179323.1U CN204461970U (en) | 2015-03-27 | 2015-03-27 | A kind of measurement mechanism controlling the standard instruments calibrating of air flow source |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067498A (en) * | 2015-07-28 | 2015-11-18 | 华南理工大学 | Detection device and method for detecting air permeability of cigarette cut tobacco |
| CN105784341A (en) * | 2016-03-04 | 2016-07-20 | 浙江省计量科学研究院 | Standard device for checking flow and differential pressure of constant flow valve and checking method |
| CN106997216A (en) * | 2017-05-19 | 2017-08-01 | 云南中烟工业有限责任公司 | A kind of constant pressure storehouse of cigarette smoking machine and its method for suction experiment |
| CN107870145A (en) * | 2017-12-13 | 2018-04-03 | 新乡天翼过滤技术检测有限公司 | A kind of filtering material or filter element strainability test device |
| CN109238936A (en) * | 2018-09-17 | 2019-01-18 | 河南中烟工业有限责任公司 | A kind of compensation ventilation rate master bar calibrating installation and its calibration method |
| CN109445284A (en) * | 2018-11-30 | 2019-03-08 | 云南中烟工业有限责任公司 | A kind of ventilation rate control method of the difference based on open type resistance to suction and closing resistance to suction |
| CN112229455A (en) * | 2020-10-12 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Volume flow adjustable suction resistance standard rod measuring method |
| CN112858087A (en) * | 2021-04-06 | 2021-05-28 | 中国烟草总公司郑州烟草研究院 | Device for obtaining stable volume flow, device for measuring smoke resistance standard component for cigarette and device for measuring ventilation rate standard component for cigarette |
| CN115574899A (en) * | 2022-09-28 | 2023-01-06 | 中国计量科学研究院 | Temperature control system and method of passive piston gas flow standard device |
-
2015
- 2015-03-27 CN CN201520179323.1U patent/CN204461970U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067498A (en) * | 2015-07-28 | 2015-11-18 | 华南理工大学 | Detection device and method for detecting air permeability of cigarette cut tobacco |
| CN105784341A (en) * | 2016-03-04 | 2016-07-20 | 浙江省计量科学研究院 | Standard device for checking flow and differential pressure of constant flow valve and checking method |
| CN105784341B (en) * | 2016-03-04 | 2018-08-07 | 浙江省计量科学研究院 | A kind of method of the standard set-up and verification of permanent flow valve flow and differential pressure verification |
| CN106997216A (en) * | 2017-05-19 | 2017-08-01 | 云南中烟工业有限责任公司 | A kind of constant pressure storehouse of cigarette smoking machine and its method for suction experiment |
| CN107870145A (en) * | 2017-12-13 | 2018-04-03 | 新乡天翼过滤技术检测有限公司 | A kind of filtering material or filter element strainability test device |
| CN109238936B (en) * | 2018-09-17 | 2023-08-18 | 河南中烟工业有限责任公司 | Compensation type ventilation rate standard rod calibration device and calibration method thereof |
| CN109238936A (en) * | 2018-09-17 | 2019-01-18 | 河南中烟工业有限责任公司 | A kind of compensation ventilation rate master bar calibrating installation and its calibration method |
| CN109445284A (en) * | 2018-11-30 | 2019-03-08 | 云南中烟工业有限责任公司 | A kind of ventilation rate control method of the difference based on open type resistance to suction and closing resistance to suction |
| CN112229455A (en) * | 2020-10-12 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Volume flow adjustable suction resistance standard rod measuring method |
| CN112229455B (en) * | 2020-10-12 | 2023-11-17 | 中国烟草总公司郑州烟草研究院 | Suction resistance standard rod measuring method capable of adjusting volume flow |
| CN112858087A (en) * | 2021-04-06 | 2021-05-28 | 中国烟草总公司郑州烟草研究院 | Device for obtaining stable volume flow, device for measuring smoke resistance standard component for cigarette and device for measuring ventilation rate standard component for cigarette |
| CN115574899A (en) * | 2022-09-28 | 2023-01-06 | 中国计量科学研究院 | Temperature control system and method of passive piston gas flow standard device |
| CN115574899B (en) * | 2022-09-28 | 2023-04-04 | 中国计量科学研究院 | Temperature control system and method of passive piston gas flow standard device |
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