CN1091824A - Flow inspection barometric return - Google Patents
Flow inspection barometric return Download PDFInfo
- Publication number
- CN1091824A CN1091824A CN 93101675 CN93101675A CN1091824A CN 1091824 A CN1091824 A CN 1091824A CN 93101675 CN93101675 CN 93101675 CN 93101675 A CN93101675 A CN 93101675A CN 1091824 A CN1091824 A CN 1091824A
- Authority
- CN
- China
- Prior art keywords
- way magnetic
- magnetic valve
- choker
- control system
- induction control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of flow inspection barometric return.For provide a kind of can form use reliable, volume is little, the flow inspection barometric return of economy, simple type flow inspection, propose to form by filtrator, pressure regulator valve, air pressure, induction control system and microprocessor system.The air pressure induction control system is made up of choker-line, differential pressure inductor and two-position three way magnetic valve; One end of filtrator is connected with pneumatic supply, the other end is connected with pressure regulator valve, pressure regulator valve is communicated with choker-line, differential pressure inductor anode and the negative terminal of air pressure induction control system, the third channel of two-position three way magnetic valve is communicated with the low pressure measurement end of choker-line, and the differential pressure inductor circuit of air pressure induction control system is connected with the circuit of microprocessor system.
Description
The invention belongs to and adopt the differential pressure measurement fluid that is produced when measuring fluid to pass through the flow inspection barometric return of the method for specific workpiece flow by restricting element.
At present to some specific workpiece, as: the flow inspection and the closed workpiece of spraying system, nozzle, lighter bore, water swivel, Null oil-pressure parts, paper filtering degree etc., as the Leak Detection of tire etc., all adopt the external flow inspection of producing, this flow inspection adopts integrated circuit on circuit design, circuit complexity, cost height and failure rate are also high, must change again during maintenance from external import part, make maintenance cost and time go up neither economy, this flow inspection bulk volume is big, and transportation, installation, use also are difficult for.
The purpose of this invention is to provide a kind of can form use reliable, volume is little, the flow inspection barometric return of economy, simple type flow inspection.
The present invention is by filtrator, pressure regulator valve, air pressure induction control system and microprocessor system are formed, the air pressure induction control system is by choker-line, differential pressure inductor and two-position three way magnetic valve are formed, one end of filtrator is connected with pneumatic supply, the other end is connected with pressure regulator valve, pressure regulator valve has output interface, the air pressure induction control system has the input interface that is communicated with choker-line and differential pressure inductor anode, during the two-position three way magnetic valve no power, input interface is communicated with differential pressure inductor negative terminal through two-position three way magnetic valve, the third channel of two-position three way magnetic valve is communicated with the low pressure measurement end of choker-line, and the differential pressure inductor circuit of air pressure induction control system is connected with the circuit of microprocessor system.
Because the present invention is made up of filtrator, pressure regulator valve, air pressure induction control system and microprocessor system, and in the air pressure induction control system, choker-line is set, utilize the principle that flow is certain, differential pressure is certain, when gas passes through choker-line, detect the flow of tested workpiece by the pressure reduction of measuring the generation of choker-line two pressure measurement ends, be that a kind of use is reliable, volume is little, economy, simple type flow inspection, thereby reach purpose of the present invention.
Fig. 1 is embodiments of the invention one (checking the flow inspection barometric return figure of specific workpiece flow).
Fig. 2 is embodiments of the invention one (checking the flow inspection barometric return parent map of specific workpiece flow).
Fig. 3 is embodiments of the invention two (checking the flow inspection barometric return figure that the closed workpiece leaks).
Fig. 4 is embodiments of the invention two (checking the flow inspection barometric return parent map that the closed workpiece leaks).
Below in conjunction with accompanying drawing the present invention is further elaborated.
Embodiment one: (when checking the specific workpiece flow)
The present invention is by filtrator 1, pressure regulator valve 2, air pressure induction control system 3 and microprocessor system 4 are formed, air pressure induction control system 3 is by choker-line 31, differential pressure inductor 32 and two-position three way magnetic valve 33 are formed, one end of filtrator 1 is connected with pneumatic supply 5, the other end is connected with pressure regulator valve 2, pressure regulator valve 2 has the output interface 21 that is connected with two-position three way magnetic valve 6, two passages in addition of two-position three way magnetic valve 6 lead to atmosphere and are connected with the input interface 71 of tested workpiece 7 respectively, the output interface 72 of measured workpiece 7 is communicated with the input interface 34 of air pressure induction control system 3, input interface 34 and choker-line 31, the anode 321 of differential pressure inductor 32 is connected with the negative terminal 322 of differential pressure inductor 32 with two passages through two-position three way magnetic valve 33, the 3rd passage of two-position three way magnetic valve 33 is communicated with the low pressure measurement end 311 of choker-line 31, and the circuit of the poor inductor 32 of air pressure induction control system 3 is connected with the circuit of microprocessor system 4.
When detecting the flow of workpiece 7, connect pneumatic supply 5 successively, filtrator 1, pressure regulator valve 2, two-position three way magnetic valve 6, measured workpiece 7, air pressure induction control system 3, and make the output interface 312 of choker-line 31 lead to atmosphere, the circuit of the differential pressure sensor 32 of air pressure induction control system 3 is connected with the circuit of microprocessor system 4, two-position three way magnetic valve 6 must be conducted, the pressure air of pneumatic supply 5 is through filter 1, pressure regulator valve 2, two-position three way magnetic valve 6, the output interface 72 of measured workpiece 7, the input interface 34 of air pressure induction control system 3 enters the choker-line 31 of air pressure induction control system 3, the anode 321 of differential pressure sensor 32, be communicated with the negative terminal 322 of differential pressure inductor 32 with two passages through two-position three way magnetic valve 33, just make differential pressure inductor 32, negative terminal 321,322 force value balances, microprocessor system 4 demonstrations are made zero, make system not detect ground maintenance good stable state, and can intercept noise.Two-position three way magnetic valve 33 must be conducted, the negative terminal 322 of differential pressure inductor 32 is communicated with the low pressure measurement end 311 of choker-line 31, nationality helps choker-line 31, utilize the principle of differential pressure certain flow, the pressure reduction that compares its positive and negative end 321,322 through differential pressure inductor 32, the electric signal of comparative result is delivered to microprocessor 4 processing, and electric signal is converted into numeral demonstration flow value.After measured workpiece 7 had detected, two-position three way magnetic valve 6 and 33 outages made the pressure air of staying in the workpiece 7 discharge through the vent port of two-position three way magnetic valve 6.
Embodiment two (checking that the closed workpiece leaks).
The present invention is by filtrator 1, pressure regulator valve 2, air pressure induction control system 3 and microprocessor system 4 are formed, air pressure induction control system 3 is by choker-line 31, differential pressure inductor 32 and two-position three way magnetic valve 33 are formed, one end of filtrator 1 is connected with pneumatic supply 5, the other end is connected with pressure regulator valve 2, pressure regulator valve 2 has the input interface 21 that is communicated with the input interface 34 of air pressure induction control system 3, input interface 34 and choker-line 31, the anode 321 of differential pressure inductor 32 is connected with the negative terminal 322 of difference sensor 32 with two passages through two-position three way magnetic valve 33, the 3rd passage of two-position three way magnetic valve 33 is communicated with the low pressure measurement end 311 of choker-line 31, the circuit of the poor inductor 32 of air pressure induction control system 3 is connected with the circuit of microprocessor system 4, the output interface 312 of choker-line 31 is connected with 10 with two-position three way magnetic valve 6, and two passages in addition of two-position three way magnetic valve 6 lead to atmosphere and are connected with the input interface 81 of measured workpiece 8 through hand adjustment valve 9 respectively.Two passages in addition of two-position three way magnetic valve 10 lead to atmosphere and are connected with the input interface 111 of inspection machine 11 through hand adjustment valve 12 respectively.
When checking the leakage of workpiece 8, be communicated with pneumatic supply 5 successively, filtrator 1, pressure regulator valve 2, air pressure induction control system 3, two-position three way magnetic valve 6,10, measured workpiece 8, the output interface 312 and the two-position three way magnetic valve 6 of choker-line 31,10 are communicated with, the circuit of the differential pressure inductor 32 of air pressure induction control system 3 is connected with circuit with microprocessor system 4, and make the pressure air of pneumatic supply 5 pass through filter 1, pressure regulator valve 2 flows to choker-line 31, the anode 321 of differential pressure inductor 32 and be communicated with the negative terminal 322 of differential pressure inductor 32 through two passages of two-position three way magnetic valve 33, just make differential pressure inductor 32, negative terminal 321,322 force value balances, two-position three way magnetic valve 6 must be conducted, pressure air enters workpiece 8, to workpiece 8 pressurizations, microprocessor system 4 demonstrations are made zero, make system when not detecting, keep stable, two-position three way magnetic valve 33 must be conducted, the negative terminal 322 of differential pressure inductor 32 is communicated with the low too measuring junction 311 of choker-line 31, differential pressure inductor 32 to it just, negative terminal 321,322 pressure reduction is made comparisons, if workpiece 8 has leakage, the force value of negative terminal 322 descends, and can measure the flow value of the leakage of workpiece 8.After measured workpiece 8 checks out, two-position three way magnetic valve 6 outages, the pressure air in the measured workpiece 8 is discharged through the vent port of two-position three way magnetic valve 6.
If when wanting check system itself whether to leak, at first with two-position three way magnetic valve 6 outage and close hand adjustment valve 9, inspection machine is contained on the interface 111 behind the two-position three way magnetic valve 10, uses above-mentioned method of testing, can whether take place to leak and proofread and correct by test macro itself.
It can be gas that the present invention is used for tested fluid, can also be liquid.
Claims (4)
1, a kind of flow inspection barometric return, it is characterized in that it is by filtrator, pressure regulator valve, air pressure induction control system and microprocessor system are formed, the air pressure induction control system is by choker-line, differential pressure inductor and two-position three way magnetic valve are formed, one end of filtrator is connected with pneumatic supply, the other end is connected with pressure regulator valve, pressure regulator valve has output interface, the air pressure induction control system has the input interface that is communicated with choker-line and differential pressure inductor anode, during the two-position three way magnetic valve no power, input interface is communicated with differential pressure inductor negative terminal through two-position three way magnetic valve, the third channel of two-position three way magnetic valve is communicated with the low pressure measurement end of choker-line, and the differential pressure inductor circuit of air pressure induction control system is connected with the circuit of microprocessor system.
2, flow inspection barometric return according to claim 1 is characterized in that described air pressure induction control system places after two-position three way magnetic valve and the detected workpiece, and the choker-line output interface leads to atmosphere.
3, flow inspection barometric return according to claim 1 is characterized in that described air pressure induction control system places before the closed detected workpiece, and the choker-line output interface is connected with measured workpiece through two-position three way magnetic valve.
4, flow inspection barometric return according to claim 3, it is characterized in that described choker-line output interface also on inspection the two-position three way magnetic valve that leaks of system itself be connected with inspection machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93101675 CN1091824A (en) | 1993-02-24 | 1993-02-24 | Flow inspection barometric return |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93101675 CN1091824A (en) | 1993-02-24 | 1993-02-24 | Flow inspection barometric return |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1091824A true CN1091824A (en) | 1994-09-07 |
Family
ID=4983733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93101675 Pending CN1091824A (en) | 1993-02-24 | 1993-02-24 | Flow inspection barometric return |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1091824A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506965A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | System for calibrating flow sensor |
| CN104568051A (en) * | 2014-12-31 | 2015-04-29 | 东莞市海川博通信息科技有限公司 | Anti-condensation bubble type water level gauge |
| CN108254167A (en) * | 2017-12-29 | 2018-07-06 | 广州市上腾电子科技有限公司 | A kind of discharge coefficient test gas circuit and its application method |
-
1993
- 1993-02-24 CN CN 93101675 patent/CN1091824A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506965A (en) * | 2011-12-01 | 2012-06-20 | 于邦仲 | System for calibrating flow sensor |
| CN104568051A (en) * | 2014-12-31 | 2015-04-29 | 东莞市海川博通信息科技有限公司 | Anti-condensation bubble type water level gauge |
| CN108254167A (en) * | 2017-12-29 | 2018-07-06 | 广州市上腾电子科技有限公司 | A kind of discharge coefficient test gas circuit and its application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201867290U (en) | Air tightness testing device for automobile air-conditioning box | |
| US5537857A (en) | Leak indicator for vacuum systems and a method of searching for leaks in vacuum systems | |
| CN2087337U (en) | Micro-leakage measuring instrument | |
| CN101718611B (en) | Engine part and whole airtightness detection device | |
| CN100585359C (en) | Gas pressure regulator test device | |
| CN107677429A (en) | A kind of air-tightness detection device and its detection method | |
| CN1091824A (en) | Flow inspection barometric return | |
| CN207636258U (en) | A kind of brake line of automobile air-tightness automatic detection device | |
| CN104236820B (en) | A kind of airtight leak detector of differential pressure type and detection method for big volume measured object | |
| CN102692301A (en) | Air tightness detecting device for pressure regulators | |
| CN209400161U (en) | A kind of on-line automatic measurement MSR pilot valve gas tiny leakage detection device | |
| CN109540418A (en) | The on-line automatic measurement MSR pilot valve gas tiny leakage detection device of one kind and method | |
| CN102853975B (en) | Vacuum detection method and device for abraded surface leakage of slide valves of railway brake | |
| CN213658193U (en) | Positive and negative pressure type precise air tightness detector | |
| CN203011652U (en) | Automobile water pump assembly sealing test system | |
| CN206330652U (en) | A kind of domestic gas meter detection means | |
| CN108956061A (en) | A kind of battery case air-tightness intelligent checking system and its detection method | |
| CN212300767U (en) | Microleakage pressure measurement device | |
| CN210005185U (en) | Sealing performance testing system of tidal current energy generator set | |
| CN113504016A (en) | Device and method for detecting sealing performance of transformer conservator capsule | |
| CN201210104Y (en) | Test apparatus for gas regulator | |
| CN111766014A (en) | Pressure testing detection device of pressure transmitter | |
| CN110243444A (en) | Negative pressure source device, detecting gas meter air-channel system and calibration method | |
| CN106404036B (en) | A kind of thermo-power station water circulation pipe instrument experimental rig | |
| CN205642768U (en) | Car and sealing nature of trailer brake valve class gas compacting testing arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |