CN203249658U - Piston type gas flowmeter - Google Patents
Piston type gas flowmeter Download PDFInfo
- Publication number
- CN203249658U CN203249658U CN 201320230458 CN201320230458U CN203249658U CN 203249658 U CN203249658 U CN 203249658U CN 201320230458 CN201320230458 CN 201320230458 CN 201320230458 U CN201320230458 U CN 201320230458U CN 203249658 U CN203249658 U CN 203249658U
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- Prior art keywords
- piston
- gas
- solenoid valve
- piston type
- flow meter
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Abstract
The utility model relates to the field of gas flow measurement and discloses a piston type gas flowmeter. The piston type gas flowmeter comprises a shell body, wherein a gas inlet nozzle and a gas outlet nozzle are arranged outside the shell body, a piston cylinder, a piston, photoelectric sensors, a control circuit board, a first electromagnetic valve and a second electromagnetic valve are arranged inside the shell body, clearance gap seal exists between the piston and the piston cylinder, a coherent port is formed in the bottom of the piston cylinder, the coherent port is connected with the gas inlet nozzle, the first electromagnetic valve is arranged on a first gas circuit on which the gas inlet nozzle is connected with the coherent port, the second electromagnetic valve is arranged on a second gas circuit on which the gas outlet nozzle is connected with the first gas circuit, the two photoelectric sensors are arranged on the piston cylinder in the axial direction, and the first electromagnetic valve, the second electromagnetic valve and the photoelectric sensors are all electronically connected with the control circuit board. According to the piston type gas flowmeter, the piston can move upwards or downwards fast without friction, the photoelectric sensors automatically record the time of the whole process to calculate the flow value of gas, the piston can restore automatically, and long-time and continuous measurement can be achieved.
Description
Technical field
The utility model relates to gas flow process fields of measurement, particularly relates to a kind of piston type gas flow meter.
Background technology
The device that is used for the industrial measurement of gas flow at present adopts soap film type flowmeter more, its microprocessor by inside combines measurements and calculations soap-film or the page through the beginning and ending time of an end volume in the glass tube with sensitive element, finally calculates gas flow.Soap film type flowmeter in use, first suds are imported in the latex water dropper of bottom, with thin rubber tube connection detector outlet and soap-foam flowmeter bottom air inlet, then push the latex water dropper, make and produce a soap-film, measure simultaneously soap-film and flow through the certain volume institute palpus time, can calculate at last the flow of gas with volume divided by the time.Can find out, adopt the soap film type flowmeter metering system, can only carry out one-shot measurement at every turn, need after measurement is finished through the long time so that the reinstatement of latex water dropper just can be measured next time, this is no longer applicable for the abominable places such as the underground or ground finite space of the environment that needs continuous coverage.
The utility model content
The technical matters that (one) will solve
The purpose of this utility model provides a kind of piston type gas flow meter, measures to provide continuously.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of piston type gas flow meter, it comprises housing, the outside of described housing is provided with admission piece and outlet nozzle, and the inside of described housing is provided with piston cylinder, piston, photoelectric sensor, control circuit board, the first solenoid valve and the second solenoid valve; Described piston and described piston cylinder clearance seal; The bottom of described piston cylinder is provided with and connects gas port, and the described gas port that connects connects admission piece, and described the first solenoid valve is located at described admission piece and is connected on the first gas circuit of gas port connection, and described the second solenoid valve is located on the second gas circuit that described outlet nozzle connects described the first gas circuit; Described piston cylinder is provided with two photoelectric sensors along its axis direction, and described the first solenoid valve, the second solenoid valve and photoelectric sensor are electrically connected with described control circuit board respectively.
Further, the inside of described housing also is provided with temperature sensor and pressure transducer, on described temperature sensor and pressure transducer are located at respectively described admission piece and are connected the first gas circuit that gas port connects, and is electrically connected with described control circuit board.
Further, also comprise the 3rd solenoid valve, described the 3rd solenoid valve is located on described outlet nozzle and the 3rd gas circuit that is connected described the first gas circuit.
Further, described the second gas circuit is located at described the first solenoid valve and described connecing between the gas port, and described the 3rd gas circuit is located between described admission piece and described the first solenoid valve.
Further, the top that is positioned at described two photoelectric sensors on the described piston cylinder is provided with limit sensors.
Further, the outside of described housing also is provided with LCDs, and described LCDs is electrically connected with described control circuit board.
Further, the outside of described housing also is provided with operating key, and described operating key is electrically connected with described control circuit board.
Further, the outside of described housing also is provided with power interface, is used for power supply.
Further, the outside of described housing also is provided with data-interface, is used for importing or the derivation of data.
(3) beneficial effect
A kind of piston type gas flow meter that technique scheme provides, simple in structure, piston and piston cylinder clearance seal, nothing friction in the piston movement process, turnover by air-flow in a plurality of solenoid control piston cylinders, so that piston is realized motion up or down fast, and adopt photoelectric sensor automatically to record exactly the used time of whole process to calculate the flow value of gas, whole measuring process is finished automatically, later piston automatic-resetting is finished in measurement, do not need manually-operated, can carry out the continual measurement of long-time continuous.
Description of drawings
Fig. 1 is the exploded view of the utility model piston type gas flow meter;
Fig. 2 is the axonometric drawing of the utility model piston type gas flow meter;
Fig. 3 is schematic diagram of gas circuit of the present utility model.
Wherein, 1, housing; 2, admission piece; 3, outlet nozzle; 4, piston cylinder; 5, piston; 6, photoelectric sensor; 7, control circuit board; 8, the first solenoid valve; 9, the second solenoid valve; 10, the 3rd solenoid valve; 11, temperature sensor; 12, pressure transducer; 13, limit sensors; 14, LCDs; 15, operating key; 16, data-interface; 17, power interface.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
Such as Fig. 1, a kind of piston type gas flow meter of the utility model, it comprises housing 1, and the outside of this housing 1 is provided with admission piece 2 and outlet nozzle 3, and the inside of housing 1 is provided with piston cylinder 4, piston 5, photoelectric sensor 6, control circuit board 7, the first solenoid valve 8 and the second solenoid valve 9; Piston 5 and piston cylinder 4 clearance seals; The bottom of piston cylinder 4 is provided with and connects gas port, connects gas port and connects admission piece 2, the first solenoid valves 8 and be located at admission piece 2 and be connected on the first gas circuit a that gas port connects, and the second solenoid valve 9 is located on the second gas circuit b of outlet nozzle 3 connections the first gas circuit a; Piston cylinder 4 is provided with two photoelectric sensors 6 along its axis direction; The first solenoid valve 8, the second solenoid valve 9 and photoelectric sensor 6 are electrically connected with control circuit board 7 respectively.Wherein, piston cylinder 4 interior formation air chambers, it is preferably glass infuser.
The present embodiment comprises that also the 3rd solenoid valve 10, the three solenoid valves 10 are located on the 3rd gas circuit c that outlet nozzle 3 connects the first gas circuit a.Preferably, the second gas circuit b is located at the first solenoid valve 8 and connects between the gas port, and the 3rd gas circuit c is located between admission piece 2 and the first solenoid valve 8.Wherein, the first solenoid valve 8 is used for the switch of control piston cylinder air inlet, and the second solenoid valve 9 is used for the switch that the control piston cylinder is given vent to anger, and the 3rd solenoid valve 10 is used for the air-flow of control admission piece and discharges.
Because the difference of environment has a great impact the flow tool of gas, in order to measure the gas flow under the varying environment, the present embodiment also is provided with temperature sensor 11 and pressure transducer 12 in the inside of housing, this temperature sensor 11 is connected connecing on the first gas circuit a that gas port connects of being located at respectively that admission piece 3 is connected with piston cylinder with pressure transducer, and is electrically connected with control circuit board 7.
The top that is positioned at two photoelectric sensors 6 on the piston cylinder 4 is provided with limit sensors 13, to carry out spacing to moving upward of piston 5, avoid piston 5 to move upward excessive and impaired with the top generation bump of piston cylinder, thereby can guarantee the accuracy of measuring and the serviceable life that can prolong piston.
As depicted in figs. 1 and 2, the outside of housing 1 also is provided with LCDs 14, operating key 15 and data-interface 16.
In addition, the power supply mode of whole flowmeter can be: in housing or power supply is set powers, or power at outer setting power interface 17 external power supplys of housing.
Such as Fig. 3, piston type gas flow meter of the present utility model, its principle of work is: because piston 5 adopts Gap Sealing Technology with piston cylinder 4, both guaranteed that sealing was also so that friction force is minimum, the first solenoid valve 8 is opened, the second solenoid valve 9 and the 3rd solenoid valve 10 are closed, form pressure reduction when passing through the air chamber in the piston cylinder after air-flow is entered by admission piece, piston moves upward, utilize photoelectric sensor 6 to detect the run duration of piston in coverage (coverage is the distance between two photoelectric sensors), thus mensurated gas composition flow Q.When piston 5 moves to superposed second photoelectric sensor, the first solenoid valve 8 cuts out, the second solenoid valve 9 and the 3rd solenoid valve 10 are opened, at this moment, turn-offed entering of piston cylinder 4 interior air-flows, piston 5 is done under the effect of self gravitation and is moved downward, and the air-flow in the piston cylinder 4 is discharged by outlet nozzle 3 behind the second solenoid valve 9, continues directly to be discharged by outlet nozzle 3 behind the 3rd solenoid valve 10 from the air-flow that admission piece 2 enters.
Wherein, the gas flow formula is:
Q is gas flow in the formula, and unit is ml/min; V is for passing through the gas volume in the coverage, and unit is ml; The t piston is by the time of coverage, the min of unit; R is the radius of piston cylinder, and unit is mm; H is coverage, and unit is mm.
The piston type gas flow meter that technique scheme provides, simple in structure, piston and piston cylinder clearance seal, nothing friction in the piston movement process, turnover by air-flow in a plurality of solenoid control piston cylinders, so that piston is realized motion up or down fast, and adopt photoelectric sensor automatically to record exactly the used time of whole process to calculate the flow value of gas, whole measuring process is finished automatically, later piston automatic-resetting is finished in measurement, do not need manually-operated, can carry out long-time continuous and uninterruptedly measure.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (9)
1. a piston type gas flow meter is characterized in that, comprises housing, and the outside of described housing is provided with admission piece and outlet nozzle, and the inside of described housing is provided with piston cylinder, piston, photoelectric sensor, control circuit board, the first solenoid valve and the second solenoid valve; Described piston and described piston cylinder clearance seal;
The bottom of described piston cylinder is provided with and connects gas port, and the described gas port that connects connects admission piece, and described the first solenoid valve is located at described admission piece and is connected on the first gas circuit of gas port connection, and described the second solenoid valve is located on the second gas circuit that described outlet nozzle connects described the first gas circuit;
Described piston cylinder is provided with two photoelectric sensors along its axis direction, and described the first solenoid valve, the second solenoid valve and photoelectric sensor are electrically connected with described control circuit board respectively.
2. piston type gas flow meter as claimed in claim 1, it is characterized in that, the inside of described housing also is provided with temperature sensor and pressure transducer, on described temperature sensor and pressure transducer are located at respectively described admission piece and are connected the first gas circuit that gas port connects, and be electrically connected with described control circuit board.
3. piston type gas flow meter as claimed in claim 1 is characterized in that, also comprises the 3rd solenoid valve, and described the 3rd solenoid valve is located on the 3rd gas circuit that described outlet nozzle connects described the first gas circuit.
4. piston type gas flow meter as claimed in claim 3 is characterized in that, described the second gas circuit is located at described the first solenoid valve and described connecing between the gas port, and described the 3rd gas circuit is located between described admission piece and described the first solenoid valve.
5. piston type gas flow meter as claimed in claim 1 is characterized in that, the top that is positioned at described two photoelectric sensors on the described piston cylinder is provided with limit sensors.
6. piston type gas flow meter as claimed in claim 1 is characterized in that, the outside of described housing also is provided with LCDs, and described LCDs is electrically connected with described control circuit board.
7. piston type gas flow meter as claimed in claim 1 is characterized in that, the outside of described housing also is provided with operating key, and described operating key is electrically connected with described control circuit board.
8. piston type gas flow meter as claimed in claim 1 is characterized in that, the outside of described housing also is provided with power interface, is used for power supply.
9. piston type gas flow meter as claimed in claim 1 is characterized in that, the outside of described housing also is provided with data-interface, is used for importing or the derivation of data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320230458 CN203249658U (en) | 2013-04-28 | 2013-04-28 | Piston type gas flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320230458 CN203249658U (en) | 2013-04-28 | 2013-04-28 | Piston type gas flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203249658U true CN203249658U (en) | 2013-10-23 |
Family
ID=49376091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320230458 Expired - Lifetime CN203249658U (en) | 2013-04-28 | 2013-04-28 | Piston type gas flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203249658U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075761A (en) * | 2014-07-26 | 2014-10-01 | 唐山唐仪科技有限公司 | High-precision and small-flow double-piston type flow meter |
| CN104765387A (en) * | 2015-04-20 | 2015-07-08 | 泸州市慧江机械制造有限公司 | Rotary piston type flow meter |
| CN105890677A (en) * | 2016-04-28 | 2016-08-24 | 山东省计量科学研究院 | Small and micro-gas flow generator |
| CN107121176A (en) * | 2017-06-13 | 2017-09-01 | 北京科技大学 | Online gas flow calibration method and apparatus for environmental pollution field monitoring |
| CN112033486A (en) * | 2020-08-19 | 2020-12-04 | 重庆市山城燃气设备有限公司 | Temperature self-adaptive natural gas detection device and control method thereof |
| CN114088146A (en) * | 2021-11-12 | 2022-02-25 | 西安迈象能源科技有限公司 | Gas flow detection control integrated valve terminal device |
-
2013
- 2013-04-28 CN CN 201320230458 patent/CN203249658U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075761A (en) * | 2014-07-26 | 2014-10-01 | 唐山唐仪科技有限公司 | High-precision and small-flow double-piston type flow meter |
| CN104075761B (en) * | 2014-07-26 | 2017-06-20 | 唐山唐仪科技有限公司 | A kind of high accuracy low discharge dual Piston flowmeter |
| CN104765387A (en) * | 2015-04-20 | 2015-07-08 | 泸州市慧江机械制造有限公司 | Rotary piston type flow meter |
| CN105890677A (en) * | 2016-04-28 | 2016-08-24 | 山东省计量科学研究院 | Small and micro-gas flow generator |
| CN105890677B (en) * | 2016-04-28 | 2021-11-02 | 山东省计量科学研究院 | Small micro gas flow generator |
| CN107121176A (en) * | 2017-06-13 | 2017-09-01 | 北京科技大学 | Online gas flow calibration method and apparatus for environmental pollution field monitoring |
| CN112033486A (en) * | 2020-08-19 | 2020-12-04 | 重庆市山城燃气设备有限公司 | Temperature self-adaptive natural gas detection device and control method thereof |
| CN114088146A (en) * | 2021-11-12 | 2022-02-25 | 西安迈象能源科技有限公司 | Gas flow detection control integrated valve terminal device |
| CN114088146B (en) * | 2021-11-12 | 2023-07-07 | 西安迈象能源科技有限公司 | Integrated valve island device for gas flow detection control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |