CN108204881A - A kind of motor compressor air-tightness non-destructive testing device and its detection method - Google Patents
A kind of motor compressor air-tightness non-destructive testing device and its detection method Download PDFInfo
- Publication number
- CN108204881A CN108204881A CN201810286071.0A CN201810286071A CN108204881A CN 108204881 A CN108204881 A CN 108204881A CN 201810286071 A CN201810286071 A CN 201810286071A CN 108204881 A CN108204881 A CN 108204881A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- dioxide gas
- motor compressor
- dependent sensor
- dsp processor
- 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
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 title claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 98
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 49
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 49
- 230000001419 dependent effect Effects 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/226—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
Abstract
The invention discloses a kind of motor compressor air-tightness non-destructive testing device, including carbon dioxide gas dependent sensor, closed pressurized container, dsp processor and host computer；The motor compressor of built-in drive is equipped in closed pressurized container, carbon dioxide gas dependent sensor is equipped in driver；Dsp processor is connected by connection with carbon dioxide gas dependent sensor, host computer respectively；Motor compressor air-tightness non-destructive testing device of the present invention acquires signal by carbon dioxide gas dependent sensor and is transmitted to dsp processor, dsp processor is transmitted to after judging whether qualification according to the signal of acquisition in host computer, can conveniently detect the air-tightness of motor compressor；Carbon dioxide gas dependent sensor uses level-one impedance inverter circuit module, and carbon dioxide gas dependent sensor output impedance is made to be reduced to commonly measurable rank；And using temperature compensation module, enhance the measurement accuracy of carbon dioxide gas dependent sensor so that reliability higher.
Description
Technical field
The present invention relates to motor compressor technical field, particularly a kind of motor compressor air-tightness non-destructive testing device and
Its detection method.
Background technology
At present, the development of electric vehicle obtains the encouragement energetically and promotion of national governments due to its environmentally protective concept,
But the air-conditioning of electric vehicle and orthodox car employs different principle and control mode, therefore the air-conditioning of electric vehicle is using new
Mentality of designing and technique；Current design is all using frequency conversion DC driven, and driver is embedded into motor compressor
Face because driver needs moistureproof and waterproof, therefore proposes the air-tightness of electric compressor certain requirement, so entire industry is urgent
A kind of mode of non-destructive testing is needed, whether detection motor compressor seals in place.
Invention content
The purpose of the present invention is to provide a kind of motor compressor air-tightness simple in structure, easy to use, good reliability
Non-destructive testing device and its detection method.
Realize the object of the invention technical solution be：
A kind of motor compressor air-tightness non-destructive testing device, which is characterized in that including carbon dioxide gas dependent sensor, it is closed plus
Pressure vessel, dsp processor and host computer；The motor compressor for being internally provided with built-in drive of the closed pressurized container,
Driver is internally provided with carbon dioxide gas dependent sensor；The dsp processor by connection respectively with carbon dioxide gas
Dependent sensor, host computer are connected.
Preferably, the carbon dioxide gas dependent sensor includes gas sensor, level-one impedance inverter circuit module, temperature benefit
Repay module and power supply；The level-one impedance inverter circuit module includes operational amplifier, second resistance, 3rd resistor and capacitance；
The temperature compensation module includes thermistor and first resistor；The power supply respectively with heating pole one end of gas sensor, heat
One end of quick resistance is connected, the heating pole other end ground connection of gas sensor, the other end of thermistor respectively with first resistor
One end, the first output terminal be connected, the other end of first resistor ground connection；Detection pole one end and the operation of the gas sensor are put
The in-phase input end of big device is connected, the detection pole other end ground connection of gas sensor；The reverse input end of the operational amplifier
One end with one end of second resistance, 3rd resistor is connected respectively, the other end of second resistance ground connection, 3rd resistor it is another
One end respectively with the output terminal of operational amplifier, second output terminal, capacitance is held to be connected, the other end ground connection of capacitance.
Preferably, the operational amplifier uses CA3140 high input impedance operational amplifiers.
A kind of detection method of motor compressor air-tightness non-destructive testing device, which is characterized in that include the following steps：
Step 1：A carbon dioxide gas dependent sensor is arranged in internal drive；
Step 2：The motor compressor of built-in drive is placed into closed pressurized container, is filled inside closed pressurized container
Enter the carbon dioxide of certain pressure；
Step 3：The signal of acquisition is transmitted to dsp processor, dsp processor by carbon dioxide gas dependent sensor by connection
The related data of acquisition can be transmitted to by connection in host computer；When the carbon dioxide of carbon dioxide gas dependent sensor acquisition
When concentration is higher than atmospheric environment concentration, dsp processor generates alarm signal and is transmitted in host computer；When carbon dioxide gas sensor senses
When the gas concentration lwevel of device acquisition is not higher than atmospheric environment concentration, dsp processor generates qualifying signal and is transmitted in host computer.
Compared with prior art, the present invention its remarkable advantage：
（1）Motor compressor air-tightness non-destructive testing device of the present invention acquires signal by carbon dioxide gas dependent sensor and transmits
To dsp processor, dsp processor is transmitted to after judging whether qualification according to the signal of acquisition in host computer, can be convenient and efficient
Detection motor compressor air-tightness.
（2）Carbon dioxide gas dependent sensor uses level-one impedance in motor compressor air-tightness non-destructive testing device of the present invention
Translation circuit module makes carbon dioxide gas dependent sensor output impedance be reduced to commonly measurable rank；And using temperature-compensating
Module enhances the measurement accuracy of carbon dioxide gas dependent sensor so that reliability higher.
Description of the drawings
Fig. 1 is the structural representation of carbon dioxide gas dependent sensor in motor compressor air-tightness non-destructive testing device of the present invention
Figure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1：
A kind of motor compressor air-tightness non-destructive testing device, including carbon dioxide gas dependent sensor, closed pressurized container, DSP
Processor and host computer；The motor compressor for being internally provided with built-in drive of the closed pressurized container, driver it is interior
Portion is provided with carbon dioxide gas dependent sensor；The dsp processor by connection respectively with carbon dioxide gas dependent sensor, on
Position machine is connected；Motor compressor air-tightness non-destructive testing device of the present invention acquires signal simultaneously by carbon dioxide gas dependent sensor
Dsp processor is transmitted to, dsp processor is transmitted to after judging whether qualification according to the signal of acquisition in host computer, can be facilitated
Efficiently detect the air-tightness of motor compressor.
As shown in Figure 1, the carbon dioxide gas dependent sensor includes gas sensor, level-one impedance inverter circuit module, temperature
Spend compensating module and power supply；The level-one impedance inverter circuit module includes operational amplifier U, second resistance R2,3rd resistor
R3 and capacitance C；The temperature compensation module includes thermistor RT and first resistor R1；The power supply VCC respectively with gas sensitive element
Heating pole one end of part, one end of thermistor RT are connected, the heating pole other end ground connection of gas sensor, thermistor RT's
The other end is connected respectively with one end of first resistor R1, the first output terminals A, the other end ground connection of first resistor R1；The gas
Detection pole one end of quick element is connected with the in-phase input end of operational amplifier U, the detection pole other end ground connection of gas sensor；
The one end of the reverse input end of the operational amplifier U respectively with one end of second resistance R2,3rd resistor R3 is connected, and second
The other end ground connection of resistance R2, the other end of 3rd resistor R3 respectively with the output terminal of operational amplifier U, second output terminal B, electricity
The one end for holding C is connected, the other end ground connection of capacitance C, wherein, it, cannot since the output impedance of gas sensor is very high
Its output signal directly is measured with common voltmeter or multimeter, so the termination level-one impedance transformation after gas sensor output
Circuit so that gas sensor output impedance is reduced to commonly measurable rank, and impedance transform operation amplifier must be selected high defeated
Enter impedance type, the operational amplifier U uses CA3140 high input impedance operational amplifiers；Due to carbon dioxide gas dependent sensor
Interior nuclear temperature can reach 500 degree or more during normal work, and kernel and surrounding air are in direct contact, therefore environment temperature
The sensitivity of sensor is influenced whether during variation, so using temperature compensation module, enhances carbon dioxide gas dependent sensor
Measurement accuracy so that reliability higher；If it is not that very high occasion can be not added with temperature-compensating for measurement accuracy requirement.
A kind of detection method of motor compressor air-tightness non-destructive testing device, includes the following steps：
Step 1：A carbon dioxide gas dependent sensor is arranged in internal drive；
Step 2：The motor compressor of built-in drive is placed into closed pressurized container, is filled inside closed pressurized container
Enter the carbon dioxide of certain pressure, it is ensured that carbon dioxide gas dependent sensor heated time was more than 3 minutes；
Step 3：The signal of acquisition is transmitted to dsp processor, dsp processor by carbon dioxide gas dependent sensor by connection
The related data of acquisition can be transmitted to by connection in host computer；When the carbon dioxide of carbon dioxide gas dependent sensor acquisition
When concentration is higher than setting threshold values, dsp processor generates alarm signal and is transmitted in host computer；When carbon dioxide gas dependent sensor is adopted
When the gas concentration lwevel of collection is not higher than setting threshold values, dsp processor generates qualifying signal and is transmitted in host computer；Complete
Detect the air-tightness of motor compressor.
In conclusion motor compressor air-tightness non-destructive testing device of the present invention is acquired by carbon dioxide gas dependent sensor
Signal is simultaneously transmitted to dsp processor, and dsp processor is transmitted to after judging whether qualification according to the signal of acquisition in host computer, can
Conveniently to detect the air-tightness of motor compressor；Titanium dioxide in motor compressor air-tightness non-destructive testing device of the present invention
Carbon gas sensor uses level-one impedance inverter circuit module, is reduced to carbon dioxide gas dependent sensor output impedance and commonly may be used
Measure rank；And using temperature compensation module, enhance the measurement accuracy of carbon dioxide gas dependent sensor so that reliability is more
It is high.
Claims (4)
1. a kind of motor compressor air-tightness non-destructive testing device, which is characterized in that including carbon dioxide gas dependent sensor, closed
Pressurizing vessel, dsp processor and host computer；The electric compressor for being internally provided with built-in drive of the closed pressurized container
Machine, driver are internally provided with carbon dioxide gas dependent sensor；The dsp processor by connection respectively with carbon dioxide
Gas sensor, host computer are connected.
2. motor compressor air-tightness non-destructive testing device according to claim 1, which is characterized in that the carbon dioxide
Gas sensor includes gas sensor, level-one impedance inverter circuit module, temperature compensation module and power supply；The level-one impedance becomes
It changes circuit module and includes operational amplifier（U）, second resistance（R2）, 3rd resistor（R3）And capacitance（C）；The temperature-compensating mould
Block includes thermistor（RT）And first resistor（R1）；The power supply（VCC）Respectively with heating pole one end of gas sensor, temperature-sensitive
Resistance（RT）One end be connected, the heating pole other end ground connection of gas sensor, thermistor（RT）The other end respectively with
One resistance（R1）One end, the first output terminal（A）It is connected, first resistor（R1）The other end ground connection；The gas sensor
Detect pole one end and operational amplifier（U）In-phase input end be connected, the detection pole other end ground connection of gas sensor；The fortune
Calculate amplifier（U）Reverse input end respectively with second resistance（R2）One end, 3rd resistor（R3）One end be connected, second
Resistance（R2）The other end ground connection, 3rd resistor（R3）The other end respectively with operational amplifier（U）Output terminal, second output
End（B）, capacitance（C）One end be connected, capacitance（C）The other end ground connection.
3. motor compressor air-tightness non-destructive testing device according to claim 2, which is characterized in that the operation amplifier
Device（U）Using CA3140 high input impedance operational amplifiers.
4. a kind of detection method of motor compressor air-tightness non-destructive testing device according to claim 1, feature exist
In including the following steps：
Step 1：A carbon dioxide gas dependent sensor is arranged in internal drive；
Step 2：The motor compressor of built-in drive is placed into closed pressurized container, is filled inside closed pressurized container
Enter the carbon dioxide of certain pressure；
Step 3：The signal of acquisition is transmitted to dsp processor, dsp processor by carbon dioxide gas dependent sensor by connection
The related data of acquisition can be transmitted to by connection in host computer；When the carbon dioxide of carbon dioxide gas dependent sensor acquisition
When concentration is higher than atmospheric environment concentration, dsp processor generates alarm signal and is transmitted in host computer；When carbon dioxide gas sensor senses
When the gas concentration lwevel of device acquisition is not higher than atmospheric environment concentration, dsp processor generates qualifying signal and is transmitted in host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286071.0A CN108204881A (en) | 2018-04-03 | 2018-04-03 | A kind of motor compressor air-tightness non-destructive testing device and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286071.0A CN108204881A (en) | 2018-04-03 | 2018-04-03 | A kind of motor compressor air-tightness non-destructive testing device and its detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108204881A true CN108204881A (en) | 2018-06-26 |
Family
ID=62606926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810286071.0A Pending CN108204881A (en) | 2018-04-03 | 2018-04-03 | A kind of motor compressor air-tightness non-destructive testing device and its detection method |
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| CN (1) | CN108204881A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238584A (en) * | 2018-09-20 | 2019-01-18 | 沈阳华德海泰电器有限公司 | Dry air or the leak hunting method of nitrogen gas insulating switchgear gas leakage |
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| CN101034030A (en) * | 2007-03-04 | 2007-09-12 | 淄博思科电子技术开发有限公司 | Probe built-in type hydrogen gas leakage detector |
| CN103244414A (en) * | 2012-02-02 | 2013-08-14 | 株式会社丰田自动织机 | Motor-driven compressor and hermetic sealing inspection method for the same |
| CN103471777A (en) * | 2013-08-29 | 2013-12-25 | 中国计量学院 | Gas leakage detection method based on carbon dioxide sensor |
| CN106958969A (en) * | 2017-05-27 | 2017-07-18 | 天津天商酷凌科技有限公司 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
| CN206785605U (en) * | 2017-04-10 | 2017-12-22 | 锦西天然气化工有限责任公司 | A kind of control system for carbon-dioxide gas compressor dry gas seals |
| CN207976257U (en) * | 2018-04-03 | 2018-10-16 | 苏州瑞驱电动科技有限公司 | A kind of motor compressor air-tightness non-destructive testing device |
-
2018
- 2018-04-03 CN CN201810286071.0A patent/CN108204881A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034030A (en) * | 2007-03-04 | 2007-09-12 | 淄博思科电子技术开发有限公司 | Probe built-in type hydrogen gas leakage detector |
| CN103244414A (en) * | 2012-02-02 | 2013-08-14 | 株式会社丰田自动织机 | Motor-driven compressor and hermetic sealing inspection method for the same |
| CN103471777A (en) * | 2013-08-29 | 2013-12-25 | 中国计量学院 | Gas leakage detection method based on carbon dioxide sensor |
| CN206785605U (en) * | 2017-04-10 | 2017-12-22 | 锦西天然气化工有限责任公司 | A kind of control system for carbon-dioxide gas compressor dry gas seals |
| CN106958969A (en) * | 2017-05-27 | 2017-07-18 | 天津天商酷凌科技有限公司 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
| CN207976257U (en) * | 2018-04-03 | 2018-10-16 | 苏州瑞驱电动科技有限公司 | A kind of motor compressor air-tightness non-destructive testing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238584A (en) * | 2018-09-20 | 2019-01-18 | 沈阳华德海泰电器有限公司 | Dry air or the leak hunting method of nitrogen gas insulating switchgear gas leakage |
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Application publication date: 20180626 |
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| WD01 | Invention patent application deemed withdrawn after publication |