CN2548124Y - Suspension type gas-flow sensor - Google Patents
Suspension type gas-flow sensor Download PDFInfo
- Publication number
- CN2548124Y CN2548124Y CN 02240205 CN02240205U CN2548124Y CN 2548124 Y CN2548124 Y CN 2548124Y CN 02240205 CN02240205 CN 02240205 CN 02240205 U CN02240205 U CN 02240205U CN 2548124 Y CN2548124 Y CN 2548124Y
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- sensor
- gas
- suspending
- gas flow
- type gas
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Abstract
Disclosed is a suspending type gas flow sensor which comprises an upper gas room and a lower gas room and the middle is apart by a moveable suspending sheet. When a pressure difference of a gas inlet and a gas outlet is produced the gas will flow from the gas inlet to the gas outlet and the suspending sheet in the lower gas room moves upwards under the pressure to make a magnet which is connected with the suspending sheet producing a corresponding displacement. The utility model applies a Hall linear sensor so a correspondingly changing electrical signal will be sensed. The electrical signal can be widely applied to flow detection of various gases when the electrical signal is processed an amplification and programming compensation treatment.
Description
A kind of sensor that can the detected gas flow belongs to the gas detection metering field.Can be used for no severe corrosive gas detection and meterings such as air, rock gas.
The utility model technology is that the patent No. in my design is to improve on the basis of ZL97220720.1 " displacement-type gas flow sensor " to form.Its characteristics, highly sensitive, practical.
The utility model mainly is made up of housing, suspension sheet, sensor probe etc.Housing divides upper and lower air chamber, and the centre is separated by by removable suspension sheet.When air intake opening and gas outlet produce gas differential pressure, gas flows to the gas outlet from air intake opening, and the suspension sheet produces mobile under the promotion of gas, thereby makes and be installed in the corresponding generation displacement of sensor magnet on the suspension sheet.Because what sensor probe adopted is linear hall element, simultaneously sensing is gone out the electric signal of respective change.This electric signal can be widely used in the flow detection of multiple gases through amplifying after the programming compensation deals.
The principle of work of sensor is as follows:
When the gaseous tension of sensor inlet, outlet equated, the suspension sheet in the sensor was in reset mode under the effect of back-moving spring, and sensor does not have electric signal output.When the pressure of gas outlet is lower than the pressure of air intake opening, suspension sheet in the sensor will be under the pressure effect of air intake opening, upwards produce corresponding moving, the magnet that links to each other with the suspension sheet produces mobile simultaneously, thereby makes the electric signal of sensor probe output respective change.
Elaborate below in conjunction with accompanying drawing:
Among Fig. 1: (1) sensor signal lines, (2) sensor housing, (3) sensor is adjusted screw, (4) hall sensor, (5) sensor is adjusted nut, (6) sensor magnet, (7) suspension sheet, (8) sensor core, (9) back-moving spring, (10) back-moving spring spacer, (11) O-ring seal, (12) suspension sheet locating shaft, (13) sensor gland bonnet, (14) sensor air intake opening, (15) sensor gas outlet, (16) sensor suspension sheet locating support, (17) lower chamber, (18) upper chamber.
Among Fig. 2: (1) air intake opening, (2) gas outlet, (3) sensor signal lines, (4) sensor housing, (5) sensor gland bonnet, (6) fixed screw.
With reference to Fig. 1: but the arrow direction is gas flow direction in sensor housing.Suspension sheet (7) is divided into upper chamber (18), lower chamber (17) with the sensor air chamber.When reset mode, promptly when two air chamber gaseous tensions were consistent up and down, gas did not flow in sensor, is in reset mode with the joining magnet of suspension sheet (7) (6) yet.The output of hall sensor (4) no signal.When upper chamber (18) gaseous tension during less than lower chamber (17) gaseous tension, the pressure in the lower chamber will promote suspension sheet (7) and move up.Magnet (6) moves up simultaneously simultaneously.The gas pressure difference of inlet, outlet is big more, and the displacement that is produced is just big more.So the electric signal of sensor (4) output is with the gas outlet changes in gas pressure differences.When gaseous tension was lower than pressure in the gas outlet in the air intake opening (14), middle suspension sheet (7) sealed the path of upper and lower air chamber under the effect of upper chamber pressure, gas can not be refluxed.When doing domestic gas meter and using, in the time of can avoiding reducing suddenly, produce the dangerous phenomenon of tempering because of the air duct gaseous tension.
With reference to Fig. 3: Hall element SS495 application circuit:
1 pin positive source, 2 pin are ground, and 3 pin are output terminal, and RL is a pull-up resistor.
Claims (4)
1, a kind of sensor of detectable gas flow, by (1) sensor signal lines, (2) sensor housing, (3) sensor is adjusted screw, (4) hall sensor, (5) sensor is adjusted nut, (6) sensor magnet, (7) suspension sheet, (8) sensor core, (9) back-moving spring, (10) back-moving spring spacer, (11) O-ring seal, (12) suspension sheet locating shaft, (13) sensor gland bonnet, (14) sensor air intake opening, (15) sensor gas outlet, (16) sensor suspension sheet locating support, (17) lower chamber, (18) upper chamber constitutes, the sheet (7) that it is characterized in that suspending is divided into upper chamber (18) and lower chamber (17) with sensor, and housing is the alloy aluminum accurate die casting.
2, suspending type gas flow sensor according to claim 1 is characterized in that above-mentioned air intake opening (14) below sensor, and gas outlet (15) are above sensor.
3, suspending type gas flow sensor according to claim 1 is characterized in that above-mentioned suspension thin slice (7) and magnet (6) directly link.
4, displacement-type gas flow sensor according to claim 1 is characterized in that above-mentioned sensing unit (4) is the Hall linear transducer, and model is SS495A, or the linear sensing element of other Hall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240205 CN2548124Y (en) | 2002-06-11 | 2002-06-11 | Suspension type gas-flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240205 CN2548124Y (en) | 2002-06-11 | 2002-06-11 | Suspension type gas-flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548124Y true CN2548124Y (en) | 2003-04-30 |
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ID=33713389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240205 Expired - Fee Related CN2548124Y (en) | 2002-06-11 | 2002-06-11 | Suspension type gas-flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2548124Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922304A (en) * | 2010-05-27 | 2010-12-22 | 中煤第三建设（集团）有限责任公司三十工程处 | Safe wingspan-type monitoring and alarming system of automatic on-off ventilation wind pressure for mine |
| CN103080703A (en) * | 2010-09-08 | 2013-05-01 | 日立汽车系统株式会社 | Gas flow rate measurement device |
| CN107014455A (en) * | 2017-06-02 | 2017-08-04 | 浙江圣地物联科技有限公司 | A kind of quality formula flow internet of things sensors |
| CN108982909A (en) * | 2018-05-30 | 2018-12-11 | 上海寰钛教育科技有限公司 | Fine motion air borne sensor |
-
2002
- 2002-06-11 CN CN 02240205 patent/CN2548124Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922304A (en) * | 2010-05-27 | 2010-12-22 | 中煤第三建设（集团）有限责任公司三十工程处 | Safe wingspan-type monitoring and alarming system of automatic on-off ventilation wind pressure for mine |
| CN101922304B (en) * | 2010-05-27 | 2012-02-29 | 中煤第三建设（集团）有限责任公司三十工程处 | Safe wingspan-type monitoring and alarming system of automatic on-off ventilation wind pressure for mine |
| CN103080703A (en) * | 2010-09-08 | 2013-05-01 | 日立汽车系统株式会社 | Gas flow rate measurement device |
| CN107014455A (en) * | 2017-06-02 | 2017-08-04 | 浙江圣地物联科技有限公司 | A kind of quality formula flow internet of things sensors |
| CN108982909A (en) * | 2018-05-30 | 2018-12-11 | 上海寰钛教育科技有限公司 | Fine motion air borne sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |