CN105067202B - Electromechanical valve air-tightness intelligent detection equipment and its detection method - Google Patents
Electromechanical valve air-tightness intelligent detection equipment and its detection method Download PDFInfo
- Publication number
- CN105067202B CN105067202B CN201510442297.1A CN201510442297A CN105067202B CN 105067202 B CN105067202 B CN 105067202B CN 201510442297 A CN201510442297 A CN 201510442297A CN 105067202 B CN105067202 B CN 105067202B
- Authority
- CN
- China
- Prior art keywords
- pressure
- microcontroller
- pressure difference
- value
- test
- 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.)
- Active
Links
Abstract
The invention discloses electromechanical valve air-tightness intelligent detection equipment and its detection methods, including pressure acquisition device, analog-digital commutator, for fixing the stroke electromagnetic valve of Devices to test, inflation solenoid valve for pressurizeing to Devices to test, timer and microcontroller, the signal output end of pressure acquisition device and the signal input part of analog-digital commutator connect, the signal output end of analog-digital commutator and the signal input part of microcontroller connect, the control output end of microcontroller is connect with the control signal of stroke electromagnetic valve and inflation solenoid valve respectively, microcontroller is also connect with timer.The present invention is able to achieve the automatic detection of electromechanical valve air-tightness, is not necessarily to artificial judgment, can guarantee the accuracy of testing result.
Description
Technical field
The present invention relates to air-leakage test technical fields, more particularly to electromechanical valve air-tightness intelligent detection equipment and its inspection
Survey method.
Background technique
Existing gas meter, flow meter electromechanical valve air-leakage test mode is led to mostly in such a way that U-tube detects electromechanical valve leakage value
The liquid level for crossing U-tube both sides within a certain period of time changes to judge electromechanical valve leakage value.Such mode needs artificial observation U-tube
The liquid position on both sides changes, and calculates whether leakage value meets the requirements.However existing electromechanical valve detection mode there are it is following not
Foot:
(1) by artificial judgment electromechanical valve leakage value, testing result is affected by human factor, cannot be guaranteed well
The accuracy of testing result, and then influence product quality；
(2) one detection device of one man operation is unfavorable for improving production efficiency.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide electromechanical valve air-tightness intelligent detection equipment and its inspections
Survey method is able to achieve the automatic detection of electromechanical valve air-tightness, artificial judgment is not necessarily to, to guarantee the accuracy of testing result.
The purpose of the present invention is achieved through the following technical solutions: electromechanical valve air-tightness intelligent detection equipment, including
Pressure acquisition device, the stroke electromagnetic valve for fixing Devices to test, is filled for what is pressurizeed to Devices to test analog-digital commutator
Pneumoelectric magnet valve, timer and microcontroller, the signal output end of pressure acquisition device and the signal input part of analog-digital commutator
Connection, the signal output end of analog-digital commutator and the signal input part of microcontroller connect, the control output end of microcontroller
It is connect respectively with the control signal of stroke electromagnetic valve and inflation solenoid valve, microcontroller is also connect with timer.
It further, further include display device, display device is connect with microcontroller.
It further, further include temperature sensor, temperature sensor is connect with microcontroller.
Further, further include the first indicator light for showing test result qualification and for showing test result qualification
The second indicator light, the first indicator light and the second indicator light are connect with microcontroller.
The detection method of electromechanical valve air-tightness, comprising the following steps:
S1. the fixed Devices to test of microcontroller control stroke electromagnetic valve, and control inflation solenoid valve and pressurize to Devices to test；
S2. the pressure signal of pressure acquisition device acquisition Devices to test, and the pressure signal is sent to analog-to-digital conversion dress
It sets；
S3. the pressure signal is converted to digital signal by analog-digital commutator, and the digital signal is sent to micro-control
Device processed；
S4. microcontroller calculates the pressure value of Devices to test, when the pressure value of Devices to test is greater than or equal to preset stop
Only when the blowing pressure value, microcontroller control inflation solenoid valve stops inflating to Devices to test, and controls timer and start timing,
The pressure value of Devices to test at this time is denoted as first pressure value；
S5. when the time of timer record reaches the preset leak detection time, the pressure value of Devices to test at this time is denoted as
Two pressure values；
S6. microcontroller calculates the pressure difference value of first pressure value and second pressure value；
S7. the microcontroller pressure difference value and preset gas pressure leak value:
If pressure difference value is less than gas pressure leak value, testing result is qualification, and microcontroller controls the first indicator light and lights；
If pressure difference value is greater than gas pressure leak value, testing result is unqualified, microcontroller the second indicator light point of control
It is bright；
S8. microcontroller control stroke electromagnetic valve discharges Devices to test.
Further include temperature sensor acquisition ambient temperature data before step S4, and the ambient temperature data is sent to micro-
The step of controller.
It further, further include setting to stop the blowing pressure value, leak detection time and air pressure leakage value by display device
Step.
Further, further include the steps that display device shows testing result.
The beneficial effects of the present invention are:
(1) present invention is able to achieve the automatic detection of electromechanical valve air-tightness, is not necessarily to artificial judgment, avoids human factor to inspection
The influence for surveying result, improves the accuracy of testing result；
(2) temperature data of temperature sensor acquisition ambient enviroment, microcontroller compensate environment temperature according to the temperature data
Degree, eliminate A/D conversion accuracy is influenced by variation of ambient temperature.
Detailed description of the invention
Fig. 1 is the structural block diagram of electromechanical valve air-tightness intelligent detection equipment of the present invention；
Fig. 2 is the block diagram realized when four electromechanical valves detect simultaneously；
Fig. 3 is the flow chart of the detection method of electromechanical valve air-tightness of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, electromechanical valve air-tightness intelligent detection equipment, including pressure acquisition device, analog-digital commutator, it is used for
Stroke electromagnetic valve, inflation solenoid valve, timer and the microcontroller for pressurizeing to Devices to test of fixed Devices to test, pressure
The signal input part of the signal output end of acquisition device and analog-digital commutator connects, the signal output end of analog-digital commutator with
The signal input part of microcontroller connects, the control with stroke electromagnetic valve and inflation solenoid valve respectively of the control output end of microcontroller
Input terminal connection processed, microcontroller are also connect with timer.
The pressure acquisition device includes pressure sensor, and pressure sensor is by the pressure signal of collected 0~20KPa
The current signal of 4~20mA is converted to, then 1 μ A=1.25Pa；The analog-digital commutator includes 16 AD7705 analog-to-digital conversions
Chip, then the current signal of 4~20mA corresponds to 0~65535dpi, then 1 μ A ≈ 4dpi ≈ 1.25Pa, therefore 0~20KPa's
The variation of 2Pa slight pressure can be identified in range, so that the present invention has very high detection accuracy.The mould of analog-digital commutator
Quasi- signal input can reduce influence of the external interference signals to current signal by the way of Differential Input, improve modulus and turn
The accuracy changed.Microcontroller can also set analog-digital commutator to the amplification factor of input signal, while can control modulus
Conversion equipment carries out digital filtering to the interference signal of different frequency in analog signal.
Microcontroller implementation controls the starting and closing of analog-digital commutator, stroke electromagnetic valve and inflation solenoid valve
System, to electromechanical valve be fixed with realization, observing and controlling system of pressurizeing, air pressure holding control, pressure release control, release electromechanical valve control
System；And the display control etc. to test result.
Timer starts timing when inflating solenoid valve and stopping and pressurizeing to electromechanical valve, and the time data of record are sent out in real time
Give microcontroller.
It further, further include display device, display device is connect with microcontroller.Display device stops filling for setting
Air pressure force value, leak detection time and air pressure leakage value, and show testing result.
It further, further include temperature sensor, temperature sensor is connect with microcontroller.Temperature sensor temperature collection
Data, and collected temperature number is sent to microcontroller, microcontroller leads variation of ambient temperature according to the temperature data
The A/D conversion accuracy variation of cause compensates.
Further, further include the first indicator light for showing test result qualification and for showing test result qualification
The second indicator light, the first indicator light and the second indicator light are connect with microcontroller.
The detection while present invention is also able to achieve more electromechanical valves, as shown in Fig. 2, pressure difference detection device includes microcontroller
Device, display device and analog-digital commutator, instruction device include the first indicator light and the second indicator light, and electromagnetic valve device includes row
Journey solenoid valve and inflation solenoid valve, first pressure difference detection device respectively with first pressure acquisition device, the first timer, first
Electromagnetic valve device and the connection of the first instruction device, second pressure difference detection device are counted with second pressure acquisition device, second respectively
When device, second solenoid valve device and the second instruction device connection, third pressure difference detection device respectively with third pressure acquisition fill
Set, third timer, third electromagnetic valve device are connected with third instruction device, the 4th pressure difference detection device respectively with the 4th pressure
Force acquisition device, the 4th timer, the 4th electromagnetic valve device and the connection of the 4th instruction device.First pressure difference detection device difference
Connect with the both ends of first switch and the second switch, second pressure difference detection device switched respectively with first switch and third two
End connection, the both ends that third pressure difference detection device is switched with first switch and the 4th respectively are connect, the 4th pressure difference detection dress
The both ends switched with first switch and the 5th respectively are set to connect.By first switch can control first pressure difference detection device,
Second pressure difference detection device, third pressure difference detection device and the 4th pressure difference detection device carry out the airtight of electromechanical valve simultaneously
Property detection, moreover it is possible to first pressure difference detection device is individually controlled by second switch, pass through third switch individually control second pressure
Power difference detection device individually controls third pressure difference detection device by the 4th switch, passes through the individually control the 4th of the 5th switch
Pressure difference detection device.
As shown in figure 3, the detection method of electromechanical valve air-tightness, comprising the following steps:
S1. the fixed Devices to test of microcontroller control stroke electromagnetic valve, and control inflation solenoid valve and pressurize to Devices to test；
S2. the pressure signal of pressure acquisition device acquisition Devices to test, and the pressure signal is sent to analog-to-digital conversion dress
It sets；
S3. the pressure signal is converted to digital signal by analog-digital commutator, and the digital signal is sent to micro-control
Device processed；
S4. microcontroller calculates the pressure value of Devices to test, when the pressure value of Devices to test is greater than or equal to preset stop
Only when the blowing pressure value, microcontroller control inflation solenoid valve stops inflating to Devices to test, and controls timer and start timing,
The pressure value of Devices to test at this time is denoted as first pressure value；
S5. when the time of timer record reaches the preset leak detection time, the pressure value of Devices to test at this time is denoted as
Two pressure values；
S6. microcontroller calculates the pressure difference value of first pressure value and second pressure value；
S7. the microcontroller pressure difference value and preset gas pressure leak value:
If pressure difference value is less than gas pressure leak value, testing result is qualification, and microcontroller controls the first indicator light and lights；
If pressure difference value is greater than gas pressure leak value, testing result is unqualified, microcontroller the second indicator light point of control
It is bright；
S8. microcontroller control stroke electromagnetic valve discharges Devices to test.
Further include temperature sensor acquisition ambient temperature data before step S4, and the ambient temperature data is sent to micro-
The step of controller.
It further, further include setting to stop the blowing pressure value, leak detection time and air pressure leakage value by display device
Step, the step are located at before step S4.The stopping the blowing pressure value, leak detection time and air pressure leakage value can as needed certainly
Row setting, time of such as hunting leak are set as 30s, stop the blowing pressure value and be set as 15kPa.
Further, further include the steps that display device shows testing result.
Claims (6)
1. electromechanical valve air-tightness intelligent detection equipment, including pressure acquisition device, pressure difference detection device, electromagnetic valve device and meter
When device, the pressure difference detection device includes microcontroller, analog-digital commutator, the electromagnetic valve device include for it is fixed to
The stroke electromagnetic valve of measurement equipment and inflation solenoid valve for pressurizeing to Devices to test, the signal output end of pressure acquisition device
It is connect with the signal input part of analog-digital commutator, the signal output end of analog-digital commutator and the signal input part of microcontroller
Connection, the control output end of microcontroller are connect with the control signal of stroke electromagnetic valve and inflation solenoid valve respectively, microcontroller
Device is also connect with timer, it is characterised in that: the pressure difference detection device, electromagnetic valve device, pressure acquisition device and timing
Device is respectively arranged with multiple groups, first pressure difference detection device respectively with first pressure acquisition device, the first timer, the first electromagnetism
Valve gear, second pressure difference detection device respectively with second pressure acquisition device, the second timer, second solenoid valve device,
Three pressure difference detection devices respectively with third pressure acquisition device, third timer, third electromagnetic valve device, the 4th pressure difference inspection
Survey device respectively with the 4th pressure acquisition device, the 4th timer, the 4th electromagnetic valve device；First pressure difference detection device difference
Connect with the both ends of first switch and the second switch, second pressure difference detection device switched respectively with first switch and third two
End connection, the both ends that third pressure difference detection device is switched with first switch and the 4th respectively are connect, the 4th pressure difference detection dress
The both ends switched with first switch and the 5th respectively are set to connect；Microcontroller can also set analog-digital commutator to input signal
Amplification factor, while analog-digital commutator can be controlled, digital filtering is carried out to the interference signal of different frequency in analog signal；
The electromechanical valve air-tightness intelligent detection equipment, further includes temperature sensor, temperature sensor is connect with microcontroller.
2. electromechanical valve air-tightness intelligent detection equipment according to claim 1, it is characterised in that: the pressure difference detection dress
Setting further includes display device, and display device is connect with microcontroller.
3. electromechanical valve air-tightness intelligent detection equipment according to claim 1, it is characterised in that: further include being surveyed for showing
First indicator light of test result qualification and the second indicator light for showing test result qualification, the first indicator light and the second instruction
Lamp is connect with microcontroller.
4. the detection method of electromechanical valve air-tightness, it is characterised in that: the following steps are included:
S1. the fixed Devices to test of microcontroller control stroke electromagnetic valve, and control inflation solenoid valve and pressurize to Devices to test；
S2. the pressure signal of pressure acquisition device acquisition Devices to test, and the pressure signal is sent to analog-digital commutator；
S3. the pressure signal is converted to digital signal by analog-digital commutator, and the digital signal is sent to microcontroller；
S4. microcontroller calculates the pressure value of Devices to test, fills when the pressure value of Devices to test is greater than or equal to preset stopping
When air pressure force value, microcontroller control inflation solenoid valve stops inflating to Devices to test, and controls timer and start timing, by this
When Devices to test pressure value be denoted as first pressure value；
S5. when the time of timer record reaches the preset leak detection time, the pressure value of Devices to test at this time is denoted as the second pressure
Force value；
S6. microcontroller calculates the pressure difference value of first pressure value and second pressure value；
S7. first pressure difference detection device, second pressure difference detection device, the inspection of third pressure difference can be controlled by first switch
It surveys device and the 4th pressure difference detection device carries out the air-leakage test of electromechanical valve simultaneously, individually control first by second switch
Pressure difference detection device switchs individually control second pressure difference detection device by third, passes through the individually control the of the 4th switch
Three pressure difference detection devices individually control the 4th pressure difference detection device by the 5th switch;
S8. the microcontroller pressure difference value and preset gas pressure leak value:
If pressure difference value is less than gas pressure leak value, testing result is qualification, and microcontroller controls the first indicator light and lights；
If pressure difference value be greater than gas pressure leak value, testing result be it is unqualified, microcontroller control the second indicator light light；
S9. microcontroller control stroke electromagnetic valve discharges Devices to test；
Further include temperature sensor acquisition ambient temperature data before the step S4, and the ambient temperature data is sent to
The step of microcontroller.
5. the detection method of electromechanical valve air-tightness according to claim 4, it is characterised in that: further include passing through display device
Setting stops the step of the blowing pressure value, leak detection time and air pressure leakage value.
6. the detection method of electromechanical valve air-tightness according to claim 4, it is characterised in that: further include that display device is shown
The step of testing result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442297.1A CN105067202B (en) | 2015-07-24 | 2015-07-24 | Electromechanical valve air-tightness intelligent detection equipment and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442297.1A CN105067202B (en) | 2015-07-24 | 2015-07-24 | Electromechanical valve air-tightness intelligent detection equipment and its detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105067202A CN105067202A (en) | 2015-11-18 |
| CN105067202B true CN105067202B (en) | 2018-12-04 |
Family
ID=54496626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510442297.1A Active CN105067202B (en) | 2015-07-24 | 2015-07-24 | Electromechanical valve air-tightness intelligent detection equipment and its detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105067202B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422854A (en) * | 2015-12-29 | 2016-03-23 | 周庆涛 | Self-pressure test gasket and application method thereof |
| CN108709733B (en) * | 2018-08-06 | 2024-04-05 | 广东万家乐燃气具有限公司 | Solenoid valve stroke and gas tightness detection device |
| CN109632203A (en) * | 2018-11-16 | 2019-04-16 | 嘉兴学院 | A kind of high-precision air tightness leakage detection apparatus and method |
| CN109708826A (en) * | 2018-12-17 | 2019-05-03 | 成都秦川物联网科技股份有限公司 | A kind of differential pressure type detection system and method |
| CN109707700A (en) * | 2019-01-29 | 2019-05-03 | 石家庄市科恒电子有限公司 | A kind of intelligent detecting method and device of Portable engineering Weapon Hydraulic System |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051040Y (en) * | 2007-01-31 | 2008-04-23 | 丹东热工仪表有限公司 | Leakage detection device |
| CN101788374A (en) * | 2010-02-02 | 2010-07-28 | 浙江大学 | Device for detecting leaking performance of gas meter motor valve |
| CN202149838U (en) * | 2011-07-19 | 2012-02-22 | 无锡星月科技有限公司 | Solenoid valve on-line detection bench |
| CN102384825A (en) * | 2011-11-09 | 2012-03-21 | 福建海洋铜业有限公司 | Air tightness detection device for gate valve |
| WO2013177437A1 (en) * | 2012-05-25 | 2013-11-28 | Kimray, Inc. | Electro-hydraulic valve positioner |
| CN103940557A (en) * | 2014-04-11 | 2014-07-23 | 慈溪市三洋电子有限公司 | Device for testing sealing performance of motor valve |
| CN204831734U (en) * | 2015-07-24 | 2015-12-02 | 成都秦川科技发展有限公司 | Electromechanical valve gas tightness intellectual detection system equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5224196B2 (en) * | 2011-03-22 | 2013-07-03 | 株式会社デンソー | Fuel vapor leak detection device |
| CN202916060U (en) * | 2012-11-27 | 2013-05-01 | 长春工业大学 | Liquefied petroleum gas cylinder valve high-low pressure sealing one-step detection method detection apparatus |
| CN204128762U (en) * | 2014-09-24 | 2015-01-28 | 济南蓝信电子设备有限公司 | A kind of valve examination platform |
-
2015
- 2015-07-24 CN CN201510442297.1A patent/CN105067202B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051040Y (en) * | 2007-01-31 | 2008-04-23 | 丹东热工仪表有限公司 | Leakage detection device |
| CN101788374A (en) * | 2010-02-02 | 2010-07-28 | 浙江大学 | Device for detecting leaking performance of gas meter motor valve |
| CN202149838U (en) * | 2011-07-19 | 2012-02-22 | 无锡星月科技有限公司 | Solenoid valve on-line detection bench |
| CN102384825A (en) * | 2011-11-09 | 2012-03-21 | 福建海洋铜业有限公司 | Air tightness detection device for gate valve |
| WO2013177437A1 (en) * | 2012-05-25 | 2013-11-28 | Kimray, Inc. | Electro-hydraulic valve positioner |
| CN103940557A (en) * | 2014-04-11 | 2014-07-23 | 慈溪市三洋电子有限公司 | Device for testing sealing performance of motor valve |
| CN204831734U (en) * | 2015-07-24 | 2015-12-02 | 成都秦川科技发展有限公司 | Electromechanical valve gas tightness intellectual detection system equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105067202A (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105067202B (en) | Electromechanical valve air-tightness intelligent detection equipment and its detection method | |
| CN105606318B (en) | A kind of calibration method of airtight leak detector | |
| CN203551050U (en) | Pressure tolerance safety and pressure testing full-automatic detection device for gas flow instrument | |
| CN204831734U (en) | Electromechanical valve gas tightness intellectual detection system equipment | |
| CN104406740A (en) | Low static pressure and differential pressure producer | |
| CN205981540U (en) | Stifled pressure transmitter of ice that shocks resistance | |
| CN209117700U (en) | A kind of alcohol tester improving detection accuracy | |
| CN202018370U (en) | Micro differential pressure type full-automatic gas meter airtightness detecting system | |
| CN106286695B (en) | A kind of air spring vibration isolation platform control system | |
| CN102829933B (en) | Air tightness detector for photoelectric instrument | |
| CN204228364U (en) | A kind of air tightness detection apparatus | |
| CN103257022B (en) | Seal testing instrument and seal testing methods | |
| CN104482995A (en) | Fuel consumption instrument calibration detecting device | |
| CN201724991U (en) | Multi-channel gauge head sampling test device | |
| CN203011652U (en) | Automobile water pump assembly sealing test system | |
| CN104502039A (en) | Gas tightness detecting method for fuel gas meter | |
| CN202814667U (en) | Photoelectric instrument gas-tightness detector | |
| DK164720B (en) | Apparatus for calibrating pressure-measurement instruments | |
| CN203432681U (en) | Brightness detector | |
| CN209117282U (en) | A kind of anti-lock braking system solenoid valve leakage tester | |
| CN104180871A (en) | Liquid level continuous measuring device and application thereof | |
| CN206330713U (en) | A kind of modified form air-tightness detection device | |
| CN206311268U (en) | The automatic leak-checking apparatus of hanging evaporator | |
| CN109297653A (en) | A kind of anti-lock braking system solenoid valve leak testing method and device | |
| CN207351636U (en) | A kind of four-way negative-pressure detection device of dirt box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 610199 Longquanyi, Sichuan Province Industrial Park licensing Applicant after: Chengdu Qinchuan networking Polytron Technologies Inc Address before: 610199 Longquanyi, Sichuan Province Industrial Park licensing Applicant before: Chengdu Taichuan Technology Development Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |