CN102175292A - Piston-type gas flow standard device - Google Patents
Piston-type gas flow standard device Download PDFInfo
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- CN102175292A CN102175292A CN 201110030975 CN201110030975A CN102175292A CN 102175292 A CN102175292 A CN 102175292A CN 201110030975 CN201110030975 CN 201110030975 CN 201110030975 A CN201110030975 A CN 201110030975A CN 102175292 A CN102175292 A CN 102175292A
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- gas flow
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Abstract
The invention discloses a piston-type gas flow standard device. A bearing plate is mounted on a bracket, the upper end of a piston cylinder is connected with the bearing plate, the upper end of the bearing plate is equipped with a sleeve, after a piston rod which is mounted inside the piston cylinder and connected with a piston passes through the sleeve, the upper end of the piston rod is connected with the lower end of a lead screw, the upper end of the piston rod is equipped with a guide plate two sides of which are respectively sleeved in a guide rod mounted inside the sleeve, a linear bearing mounted on the guide plate is in slide fit with the guide rod, the other end of the lead screw passes through the sleeve and is then connected with an encoder through a shaft coupling, a reducer and a stepping motor, the lower end of the piston cylinder is connected with an end cover which is provided with an exhaust pipeline, and the side face of the exhaust pipeline is provided with joint holes for mounting a temperature sensor and a pressure sensor. The standard gas of the device is generated by means of the motion of the piston, has the characteristics of being small in the impact from external factors, high in precision, reliable in operation, convenient in operation, short in detecting time and the like, and is particularly suitable for the detection of soap film flowmeter, suspended body flowmeter and diaphragm gas meter.
Description
Technical field
The present invention relates to gas flow standard device, especially relate to a kind of piston type gas flow standard set-up.
Background technology
The calibrating of soap film flowmeter, suspended body flowmeter, diaphragm gas meter at present, mainly be to be finished by bell-jar gas flow standard equipment and method of standard table gas flow standard device, the accuracy of calibrating is not high, poor reliability, especially when the calibrating of flowmeter for small flow, performance more outstanding.
The piston type gas flow standard set-up has the accuracy of measurement height, reliable and stable and easy realization detects advantages such as robotization.But because piston type flow calibrating installation is dynamo-electric combination, processing cooperates the accuracy requirement height.Reasons such as the design of Controller difficulty is big, therefore present domestic piston type gas flow standard set-up is not a lot.
Summary of the invention
The purpose of this invention is to provide a kind ofly based on the piston type gas flow standard set-up, it has precision height, reliable operation, easy to operate, characteristics such as the calibrating time is short.
In order to achieve the above object, the technical solution used in the present invention is:
Bearing plate is rack-mount, the piston cylinder upper end is connected with bearing plate, sleeve is equipped with in the bearing plate upper end, after the piston rod that is contained in the piston cylinder and links to each other with piston passes sleeve, the piston rod upper end is connected with the lower end of screw mandrel, guide plate is installed in the piston rod upper end, the guide plate both sides are enclosed within respectively in the guide rod that is installed in the sleeve, the linear bearing and the guide rod formation that are installed on the guide plate are slidingly matched, the other end of screw mandrel passes sleeve after shaft coupling, speed reduction unit, stepper motor is connected with scrambler, the piston cylinder lower end is connected with end cap, and end cap is provided with outlet pipe, and the side of outlet pipe has the interface holes of mounting temperature sensor and pressure transducer.
The periphery of described piston is equipped with first wear ring, Glais ring, second wear ring successively, have oil groove on the periphery of piston upper end, piston is connected with underpart of the piston rod through the piston rod joint flange, and buffer board is installed in the middle of piston and piston rod joint flange.
Described sleeve symmetria bilateralis has view window, and the upper and lower side of sleeve is separately installed with travel switch.
The beneficial effect that the present invention has is:
Calibrating gas of the present invention is produced by the motion of piston, and the extraneous factor influence is few, has precision height, reliable operation, easy to operate, characteristics such as the calibrating time is short, is specially adapted to the calibrating of soap film flowmeter, suspended body flowmeter and diaphragm gas meter.
Description of drawings
Fig. 1 is a cut-open view of the present invention.
Fig. 2 is the partial view of A among Fig. 1.
Fig. 3 is the partial view of B among Fig. 1.
Fig. 4 is the partial view of C among Fig. 1.
Fig. 5 is the partial view of D among Fig. 1.
Fig. 6 is a stereographic map of the present invention.
Among the figure: 1, support, 2, end cap, 3, piston cylinder, 4, piston, 5, piston rod joint flange, 6, piston rod, 7, bearing plate, 8, sleeve, 9, guide rod, 10, linear bearing, 11, screw mandrel, 12, bearing cap, 13, coupling sleeve, 14, shaft coupling, 15, scrambler, 16, motor, 17, speed reduction unit, 18, angular contact ball bearing, 19, guide plate, 20, buffer board, 21, Glais ring, 22, O type circle.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As Fig. 1～shown in Figure 6, bearing plate 7 is installed on the support 1, piston cylinder 3 upper ends are connected with bearing plate 7, sleeve 8 is equipped with in bearing plate 7 upper ends, be contained in the piston cylinder 3 and after the piston rod 6 that piston rod joint flange 5 links to each other with piston 4 passes sleeve 8, piston rod 6 upper ends are connected with the lower end of screw mandrel 11, guide plate 19 is installed in piston rod 6 upper ends, guide plate 19 both sides are enclosed within respectively in the guide rod 9 that is installed in the sleeve 8, linear bearing 10 is installed on the guide plate, linear bearing 10 forms with guide rod 9 and is slidingly matched, the cooperation of guide rod 9 bottoms is installed on the ear type baffle plate of sleeve 8 lower flanges, guide rod 9 tops are installed in sleeve 8 upper surfaces by leader nut, screw mandrel 11 tops and angular contact ball bearing 18 are used, screw mandrel 11 tops are connected with shaft coupling 14, contact ball bearing 18 is fixing by bearing cap 12, bearing cap 12 is fixed on the upper surface of sleeve 8, the outside of shaft coupling and bearing cap is equipped with coupling sleeve 13, coupling sleeve 13 is contained in sleeve 8 upper surfaces, piston cylinder 3 lower ends are connected with end cap 2, the junction is equipped with O type circle 22, end cap 2 sets out air pipe, outlet pipe is used for external tested flowmeter, and the side of feed channel has the interface holes of mounting temperature sensor and pressure transducer.
The periphery of described piston 4 is equipped with first wear ring, Glais ring 21, second wear ring successively, have oil groove on the piston 4 upper end peripheries, piston 4 is connected with piston rod 6 bottoms through piston rod joint flange 5, at piston 4 and the piston rod joint flange 5 middle buffer boards 20 that are equipped with.
Described sleeve 8 symmetria bilateralis have view window, and the upper and lower side of sleeve 8 is separately installed with travel switch.
Described speed reduction unit 17 is installed on the shaft coupling 14, and stepper motor 16 is installed on the speed reduction unit 17, and stepper motor 16 is by PLC control, and through speed reduction unit 17, shaft coupling 14, screw mandrel 11, piston rod 6 transmissions, driven plunger 4 moves up and down; Scrambler 15 is installed on the stepper motor 16, and scrambler 15 feeds back to control system with the positional information of piston 4.
Principle of work of the present invention is as follows:
During calibrating installation work, the speed drive screw mandrel rotation of upper computer control system control step motor to set drives piston and moves downward discharge gas, discharges piston cylinder, the measured flux of flowing through meter by the bottom end cover outlet pipe.PLC passes to upper computer control system with the motor movement data that scrambler collects, and can calculate actual flow and volume according to piston cylinder internal diameter, temperature parameter, pressure parameter, with this flow value and volumetric values as standard.To soap film flowmeter, when suspended body flowmeter is examined and determine, flow value and tested soap film flowmeter, the indicating value of suspended body flowmeter of standard compared, calculate the error of indication; When diaphragm gas meter is examined and determine, the volumetric values of standard and the indicating value of tested diaphragm gas meter are compared, calculate the error of indication.With reference to the vertification regulation of soap film flowmeter, suspended body flowmeter, diaphragm gas meter, judge whether tested flowmeter is qualified.Control system is made up of slave computer and host computer, and slave computer is Programmable Logic Controller (PLC), and slave computer is according to start and stop, speed and the stroke of the instruction control stepper motor of host computer, and real time data is uploaded to host computer; Host computer is made of personal computer, parameters such as host computer real time record motor speed, piston position, temperature, pressure, humidity, and can adjust the state of stepper motor by the setting of controlled variable.
Claims (3)
1. piston type gas flow standard set-up, it is characterized in that: bearing plate (7) is installed on the support (1), piston cylinder (3) upper end is connected with bearing plate (7) lower end, sleeve (8) is equipped with in bearing plate (7) upper end, after the piston rod (6) that is contained in the piston cylinder (3) and links to each other with piston (4) passes sleeve (8), the upper end of piston rod (6) is connected with the lower end of screw mandrel (11), guide plate (19) is installed in piston rod (6) upper end, guide plate (19) both sides are enclosed within respectively in the guide rod (9) that is installed in the sleeve (8), the linear bearing (10) that is installed on the guide plate (19) is slidingly matched with guide rod (9) formation, the other end of screw mandrel (11) passes sleeve (8) after shaft coupling (14), speed reduction unit (17), stepper motor (16) is connected with scrambler (16), piston cylinder (3) lower end is connected with end cap (2), end cap (2) is provided with outlet pipe, and the side of outlet pipe has the interface holes of mounting temperature sensor and pressure transducer.
2. a kind of piston type gas flow standard set-up according to claim 1, it is characterized in that: the periphery of described piston (4) is equipped with first wear ring, Glais ring (21), second wear ring successively, have oil groove on the periphery of piston (4) upper end, piston (4) is connected with piston rod (6) bottom through piston rod joint flange (5), at the middle buffer board (20) that is equipped with of piston (4) and piston rod joint flange (5).
3. a kind of piston type gas flow standard set-up according to claim 1 is characterized in that: described sleeve (8) symmetria bilateralis has view window, and the upper and lower side of sleeve (8) is separately installed with travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030975 CN102175292A (en) | 2011-01-28 | 2011-01-28 | Piston-type gas flow standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110030975 CN102175292A (en) | 2011-01-28 | 2011-01-28 | Piston-type gas flow standard device |
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| CN102175292A true CN102175292A (en) | 2011-09-07 |
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| CN 201110030975 Pending CN102175292A (en) | 2011-01-28 | 2011-01-28 | Piston-type gas flow standard device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393237A (en) * | 2011-11-01 | 2012-03-28 | 浙江省计量科学研究院 | Water meter calibrating device and method for water meter calibration |
| CN102680057A (en) * | 2012-05-17 | 2012-09-19 | 上海市计量测试技术研究院 | Piston type gas-liquid dual-purpose micro-flow standard device |
| CN103090934A (en) * | 2013-01-15 | 2013-05-08 | 中国计量学院 | Multi-piston arraying type gas flow standard device |
| CN103791985A (en) * | 2014-01-16 | 2014-05-14 | 宁波创盛仪表有限公司 | Static state standard cubic meter calibration device and calibration method of static state standard cubic meter calibration device |
| CN103890552A (en) * | 2011-10-31 | 2014-06-25 | 霍尼韦尔国际公司 | Piston prover apparatus, method and system |
| CN103884403A (en) * | 2014-02-20 | 2014-06-25 | 浙江省计量科学研究院 | Piston flow calibrator with internal guide rod |
| CN104458492A (en) * | 2014-12-08 | 2015-03-25 | 中国计量学院 | Method and device for calibrating water-encountering gas releasing tester |
| CN106289461A (en) * | 2016-08-31 | 2017-01-04 | 金卡高科技股份有限公司 | A kind of two-chamber piston type gas flow standard |
| CN104019870B (en) * | 2014-04-28 | 2017-02-15 | 金卡高科技股份有限公司 | Piston type flow calibration device with internally-arranged lead screw |
| CN107063402A (en) * | 2016-12-27 | 2017-08-18 | 福建工程学院 | A kind of gas flow sensor detection means and method |
| CN109405937A (en) * | 2018-12-26 | 2019-03-01 | 浙江省计量科学研究院 | A kind of wide-range is than the method that water meter verifies standard set-up and its water meter verification |
| CN113252125A (en) * | 2021-05-25 | 2021-08-13 | 宜宾机电一体化研究所 | High measurement accuracy wet-type gas flowmeter and measurement drum slewing mechanism and measurement indicating mechanism |
| CN109405937B (en) * | 2018-12-26 | 2024-04-30 | 浙江省计量科学研究院 | Wide-range ratio water meter calibration standard device and water meter calibration method thereof |
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| US4347731A (en) * | 1980-03-28 | 1982-09-07 | Rockwell International Corporation | Control apparatus for meter prover |
| CN201218254Y (en) * | 2008-07-21 | 2009-04-08 | 泸州邦立液压有限责任公司 | Hydraulic cylinder of large excavator |
| CN201247077Y (en) * | 2008-06-27 | 2009-05-27 | 东莞市敏达测控技术有限公司 | Calibration instrument for testing linear sensor |
| CN101666670A (en) * | 2009-09-18 | 2010-03-10 | 浙江省计量科学研究院 | Gas flow calibration device based on standard plunger piston |
-
2011
- 2011-01-28 CN CN 201110030975 patent/CN102175292A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4347731A (en) * | 1980-03-28 | 1982-09-07 | Rockwell International Corporation | Control apparatus for meter prover |
| CN201247077Y (en) * | 2008-06-27 | 2009-05-27 | 东莞市敏达测控技术有限公司 | Calibration instrument for testing linear sensor |
| CN201218254Y (en) * | 2008-07-21 | 2009-04-08 | 泸州邦立液压有限责任公司 | Hydraulic cylinder of large excavator |
| CN101666670A (en) * | 2009-09-18 | 2010-03-10 | 浙江省计量科学研究院 | Gas flow calibration device based on standard plunger piston |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103890552A (en) * | 2011-10-31 | 2014-06-25 | 霍尼韦尔国际公司 | Piston prover apparatus, method and system |
| CN103890552B (en) * | 2011-10-31 | 2016-11-16 | 霍尼韦尔国际公司 | Piston prover device, method and system |
| CN102393237A (en) * | 2011-11-01 | 2012-03-28 | 浙江省计量科学研究院 | Water meter calibrating device and method for water meter calibration |
| CN102393237B (en) * | 2011-11-01 | 2012-11-21 | 浙江省计量科学研究院 | Water meter calibrating device and method for water meter calibration |
| CN102680057A (en) * | 2012-05-17 | 2012-09-19 | 上海市计量测试技术研究院 | Piston type gas-liquid dual-purpose micro-flow standard device |
| CN103090934A (en) * | 2013-01-15 | 2013-05-08 | 中国计量学院 | Multi-piston arraying type gas flow standard device |
| CN103791985A (en) * | 2014-01-16 | 2014-05-14 | 宁波创盛仪表有限公司 | Static state standard cubic meter calibration device and calibration method of static state standard cubic meter calibration device |
| CN103884403B (en) * | 2014-02-20 | 2016-08-17 | 浙江省计量科学研究院 | A kind of guide rod internally-arranged type piston fluid aligner |
| CN103884403A (en) * | 2014-02-20 | 2014-06-25 | 浙江省计量科学研究院 | Piston flow calibrator with internal guide rod |
| CN104019870B (en) * | 2014-04-28 | 2017-02-15 | 金卡高科技股份有限公司 | Piston type flow calibration device with internally-arranged lead screw |
| CN104458492A (en) * | 2014-12-08 | 2015-03-25 | 中国计量学院 | Method and device for calibrating water-encountering gas releasing tester |
| CN106289461A (en) * | 2016-08-31 | 2017-01-04 | 金卡高科技股份有限公司 | A kind of two-chamber piston type gas flow standard |
| CN106289461B (en) * | 2016-08-31 | 2019-11-08 | 金卡智能集团股份有限公司 | A kind of two-chamber piston type gas flow standard |
| CN107063402A (en) * | 2016-12-27 | 2017-08-18 | 福建工程学院 | A kind of gas flow sensor detection means and method |
| CN107063402B (en) * | 2016-12-27 | 2023-07-25 | 福建工程学院 | Gas flow sensor detection device and method |
| CN109405937A (en) * | 2018-12-26 | 2019-03-01 | 浙江省计量科学研究院 | A kind of wide-range is than the method that water meter verifies standard set-up and its water meter verification |
| CN109405937B (en) * | 2018-12-26 | 2024-04-30 | 浙江省计量科学研究院 | Wide-range ratio water meter calibration standard device and water meter calibration method thereof |
| CN113252125A (en) * | 2021-05-25 | 2021-08-13 | 宜宾机电一体化研究所 | High measurement accuracy wet-type gas flowmeter and measurement drum slewing mechanism and measurement indicating mechanism |
| CN113252125B (en) * | 2021-05-25 | 2023-08-25 | 宜宾机电一体化研究所 | Wet-type gas flowmeter with high measurement accuracy and metering drum rotation mechanism |
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Application publication date: 20110907 |