CN108680319A - A kind of cylinder air tightness detection system - Google Patents
A kind of cylinder air tightness detection system Download PDFInfo
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- CN108680319A CN108680319A CN201810670370.4A CN201810670370A CN108680319A CN 108680319 A CN108680319 A CN 108680319A CN 201810670370 A CN201810670370 A CN 201810670370A CN 108680319 A CN108680319 A CN 108680319A
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- cylinder
- valve
- tested
- detection system
- tightness detection
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- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
- G01M3/329—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell for verifying the internal pressure of closed containers
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of cylinder air tightness detection system is disclosed in the present invention, including air supply unit, differential pressure pickup and reference cavity, the gas supply balancing unit outlet manifold connection reference cavity and tested cylinder, the reference cavity connection is tested cylinder, and the differential pressure pickup is arranged tested between cylinder and reference cavity.The present invention detects cylinder air-tightness using differential pressure method, essence is comparison reference zero leakage chamber and tested chamber, by arranging the pressure drop of the tested chamber of differential pressure pick-up detection between the two chambers, traditional cylinder air tightness detection system is compared, the present invention greatly improves accuracy of detection.The present invention expands detection range compared to traditional air tightness detection system simultaneously, also can accurately be detected to the minute leakage under big pressure.
Description
Technical field
The present invention relates to cylinder air-leakage test field, more particularly to a kind of cylinder air tightness detection system.
Background technology
Cylinder is most common pneumatic apparatus, and the pressure energy of air can be converted to mechanical energy by it, and driving mechanism is done
Straight reciprocating motion, swing and rotary motion.With the development of industrial requirement, the type of cylinder is also more and more various, including mark
Quasi- cylinder, save space cylinder, rodless cylinder, oscillating cylinder etc., and applied as needed in different occasions.With product cylinder
The sealing performance detection of the increase of complexity and strict demand to safety, cylinder is ensureing product quality and performances
Aspect plays increasingly important role.Although pneumatic system is using compressed air as working media, the system of compressed air
The standby air compressor that generally requires consumes a large amount of electric energy.In China, the power consumption of air compressor machine accounts for about the 10% of national generating capacity.
Usually, the power consumption of compressed air system accounts for about factory's total power consumption 10~20% in the industrial production, some factories are even
Up to 35%.In the compressed air system of current Chinese Enterprises, energy waste, which is mainly shown as, leaks bigger than normal, air compressor machine configuration
And operation is only for the purpose of pressurize, supply pressure is unreasonable, air gun nozzle is inefficient, sets cushion gas in the presence of waste, field worker use
The problems such as gas cost consciousness is thin equal.But show the most apparent, problem compressed air leakage most serious of all.And cylinder conduct
Most important pneumatic apparatus, leakage situation is also most universal in pneumatic system, especially under high-pressure situations, in cylinder
Small leakage will also cause huge energy waste, carry out cylinder air-leakage test technology to promoting Chinese Enterprises Pneumatic power-saving
Work has very important significance.To meet the use demand at scene, while overcoming the linear loss and flow loss of pipeline,
The bleed pressure of the pneumatic enterprise of cylinder is generally higher than 0.7MPa.Cylinder leakage often influences the pressure distribution of two chamber of piston, and
Cause cylinder to malfunction, cannot be satisfied normal performance, will also interrupt production procedure under serious conditions, and influence staff
Safety of life and property.
In conclusion developing the air-leakage test ability that a set of cylinder performance detecting system improves cylinder, can not only meet
Energy-saving and environment-friendly demand, and the safety to safeguarding industry spot, the quality etc. for improving cylinder all have larger reality meaning
Justice.
Invention content
It is an object of the invention to solve the deficiency of traditional cylinder pressurization ratio detection method, such as with traditional cylinder pressurization ratio
When detection, flowmeter range is larger, it is difficult to detect small leakage, although it is higher to smear soap water law precision, and working efficiency
Low, labor intensity is big, can not quantify to testing result, cannot carry out data analysis, and be easy to cause environmental pollution, can be to gas
Cylinder causes to corrode.Started based on small, low in energy consumption and cost performance ratio to solve the above problems, offer is a kind of
Machine cylinder air tightness detection system.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of cylinder air tightness detection system, including air supply unit, differential pressure pickup and reference cavity, the gas supply
Balancing unit outlet manifold connects reference cavity and tested cylinder, and the reference cavity connection is tested cylinder, and the differential pressure pickup is set
It sets tested between cylinder and reference cavity.
Further, as optimal technical scheme, the air supply unit includes sequentially connected air source, bigeminy part, storage
Gas tank and electric Proportion valve.
Further, as optimal technical scheme, three five are additionally provided between the air supply unit and tested cylinder
Three-way electromagnetic valve, the first two-position three way magnetic valve and the second two-position three way magnetic valve, 3 position-5 way solenoid valve import connection
Air supply unit, two outlets are separately connected the first two-position three way magnetic valve and the second two-position three way magnetic valve, described one or two three
Three-way electromagnetic valve connection is tested cylinder rod chamber, and the second two-position three way magnetic valve connection is tested cylinder rodless cavity.
Further, as optimal technical scheme, switch electromagnetism is additionally provided between the air supply unit and reference cavity
Valve group, the solenoid valve block include first switch solenoid valve, second switch solenoid valve, third switch electromagnetic valve, and described first opens
Powered-down magnet valve, second switch solenoid valve are in parallel to be connected with third switch electromagnetic valve triangle, and outlet is connected to efficacy of a drug sensing
Device both ends.
Further, as optimal technical scheme,：It is additionally provided with the 4th between the differential pressure pickup and tested cylinder
Switch electromagnetic valve.
Further, it as optimal technical scheme, is tested between the rod chamber and the first two-position three way magnetic valve of cylinder also
It is provided with vertical compression sensor.
Further, it as optimal technical scheme, is tested between the rodless cavity and the second two-position three way magnetic valve of cylinder also
It is provided with vertical compression sensor.
Advantageous effect possessed by the present invention：
1. the present invention detects cylinder air-tightness using differential pressure method, substantially it is comparison reference zero leakage chamber and tested chamber, passes through
The differential pressure pick-up detection of arrangement between the two chambers is tested the pressure drop of chamber, compares traditional cylinder air tightness detection system, this hair
It is bright to greatly improve accuracy of detection.
2. the present invention expands detection range compared to traditional air tightness detection system, to the minute leakage under big pressure
It can accurately detect.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure：1, air source；2, bigeminy part；3, air accumulator；4, electric Proportion valve；5,3 position-5 way solenoid valve；6, the one two
Position-3-way solenoid valve；7, the second two-position three way magnetic valve；8, the first vertical compression sensor；9, the second vertical compression sensor；10, it is tested gas
Cylinder；11, first switch solenoid valve；12, second switch solenoid valve；13, third switch electromagnetic valve；14, differential pressure pick-up the 15, the 4th
Switch electromagnetic valve；16, reference cavity.
Specific implementation mode
Invention is further described in the following with reference to the drawings and specific embodiments.
Example 1
If Fig. 1 is cylinder air tightness detection system structural schematic diagram, cylinder air tightness detection system packet
Include air supply unit, differential pressure pickup 14 and reference cavity 16, gas supply balancing unit outlet manifold connection reference cavity 16 and tested cylinder
10, the connection of reference cavity 16 is tested cylinder 10, and differential pressure pickup 14 is arranged between tested cylinder 10 and reference cavity 16.The confession
Gas unit includes sequentially connected air source 1, bigeminy part 2, air accumulator 3 and electric Proportion valve 4.The air supply unit and tested gas
It is additionally provided with 3 position-5 way solenoid valve 5, the first two-position three way magnetic valve 6 and the second two-position three way magnetic valve 7 between cylinder 10, three
5 import of five-way electromagnetic valve connects air supply unit, and two outlets are separately connected the first two-position three way magnetic valve 6 and the second two-position three way electricity
Magnet valve 7.The connection of first two-position three way magnetic valve 6 is tested 10 rod chamber of cylinder, and the connection of the second two-position three-way electromagnetic 7 is tested cylinder 10
Rodless cavity.Switch electromagnetic valve group is additionally provided between air supply unit and reference cavity 16, the solenoid valve block includes first switch electricity
Magnet valve 11, second switch solenoid valve 12, third switch electromagnetic valve 13, the first switch solenoid valve 11, second switch solenoid valve
12 and 13 connection triangular in shape of third switch electromagnetic valve, outlet is connected to 14 both ends of differential pressure pickup.Differential pressure pickup 14
It is additionally provided with the 4th switch electromagnetic valve 15 between tested cylinder 10.The rod chamber and the first two-position three-way electromagnetic of tested cylinder 10
Vertical compression sensor 8 is provided between valve 7.It is provided between the rodless cavity and the second two-position three way magnetic valve 7 of tested cylinder 10 straight
Pressure sensor 9.
Illustrate the present invention by taking external leakage test of the rod chamber of single pole double-acting cylinder under 630kPa air pressure environment as an example
Specific implementation mode.Third switch electromagnetic valve 13 is opened when detection to ensure air source simultaneously to being tested cylinder 10 and and reference cavity
16 inflations；Keep the first two position three-way valve 6 the next, the second two position three-way valve 7 is upper, and three position five-way valve 5 is upper, controls electrical ratio
Example valve 4 provides stable 630kPa air pressure environment to detecting system, then opens first switch solenoid valve 11 and second switch electricity
Magnet valve 12, the then piston rod for being tested cylinder 10 push back, and system is inflated to cylinder rod chamber；It is the next to convert three position five-way valve 5, at this time
Cylinder rodless cavity is also passed into 630kPa air pressures.When cylinder rodless cavity 630kPa air pressure ambient stables, first switch electromagnetism is closed
Valve 11 and second switch solenoid valve 12, air supply unit and differential pressure measuring part is isolated.Third switch electromagnetic valve 13 is finally closed,
So that the rod chamber of tested cylinder 10 is isolated with reference cavity 16, differential pressure pick-up 14 measures the pressure difference of two chambers.It is to describe herein
, influenced to measure the leakage of rod chamber it is necessary to exclude the interior leakage at cylinder piston.So in detection-phase, control electricity
Gas proportioning valve 4 makes the air pressure that the air pressure of rodless cavity is always maintained at rod chamber identical, so it is prevented that rod chamber to be measured
Gas flow rodless cavity, differential pressure system measure be exactly rod chamber leakage.The pressure difference measured by differential pressure pickup 14 can be with
Show whether cylinder has leakage and leakage rate data by correlation computations.
The description and the appended drawings of the present invention are considered illustrative and not restrictive, on the basis of invention, this field
For technical staff according to disclosed technology contents, one can be made to some of technical characteristics by not needing performing creative labour
It is a little to replace and deform, in the protection domain of invention.
Claims (7)
1. a kind of cylinder air tightness detection system, including air supply unit, differential pressure pickup (14) and reference cavity (16),
It is characterized in that：The air supply unit outlet manifold connection reference cavity (16) and tested cylinder (10), reference cavity (16) connection
Tested cylinder (10), the differential pressure pickup (14) are arranged between tested cylinder (10) and reference cavity (16).
2. a kind of cylinder air tightness detection system according to claim 1, it is characterised in that：The gas supply list
Member includes sequentially connected air source (1), bigeminy part (2), air accumulator (3) and electric Proportion valve (4).
3. a kind of cylinder air tightness detection system according to claim 1, it is characterised in that：The gas supply list
3 position-5 way solenoid valve (5), the first two-position three way magnetic valve (6) and the two or two are additionally provided between first and tested cylinder (10)
Three-way magnetic valve (7), described 3 position-5 way solenoid valve (5) import connect air supply unit, and two outlets are separately connected the one or two
Three-way magnetic valve (6) and the second two-position three way magnetic valve (7), the first two-position three way magnetic valve (6) connection are tested cylinder
(10) rod chamber, the second two-position three way magnetic valve (6) connection are tested cylinder (10) rodless cavity.
4. a kind of cylinder air tightness detection system according to claim 1, it is characterised in that：The gas supply list
It is additionally provided with switch electromagnetic valve group between member and reference cavity (16), the solenoid valve block includes first switch solenoid valve (11), the
Two switch electromagnetic valves (12), third switch electromagnetic valve (13), the first switch solenoid valve (11), second switch solenoid valve (12)
It is connected with third switch electromagnetic valve (13) triangle, third switch electromagnetic valve (13) inlet and outlet are connected to differential pressure pickup
(14) both ends.
5. a kind of cylinder air tightness detection system according to claim 1, it is characterised in that：The pressure difference passes
The 4th switch electromagnetic valve (15) is additionally provided between sensor (14) and tested cylinder (10).
6. a kind of cylinder air tightness detection system according to claim 1, it is characterised in that：Tested cylinder (10)
Rod chamber and the first two-position three way magnetic valve (6) between be additionally provided with the first vertical compression sensor (8).
7. a kind of cylinder air tightness detection system according to claim 1, it is characterised in that：Tested cylinder (10)
Rodless cavity and the second two-position three way magnetic valve (7) between be additionally provided with the second vertical compression sensor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670370.4A CN108680319A (en) | 2018-06-26 | 2018-06-26 | A kind of cylinder air tightness detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670370.4A CN108680319A (en) | 2018-06-26 | 2018-06-26 | A kind of cylinder air tightness detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108680319A true CN108680319A (en) | 2018-10-19 |
Family
ID=63812444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810670370.4A Withdrawn CN108680319A (en) | 2018-06-26 | 2018-06-26 | A kind of cylinder air tightness detection system |
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| CN (1) | CN108680319A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580122A (en) * | 2018-12-12 | 2019-04-05 | 中国北方发动机研究所(天津) | A kind of engine assembly detection hydrostatic testing machine and application 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 |
| CN110336058A (en) * | 2019-07-26 | 2019-10-15 | 武汉众宇动力***科技有限公司 | A kind of fuel cell pack detection method and detection device |
| CN112082594A (en) * | 2019-06-13 | 2020-12-15 | *** | Intelligent monitor for cylinder in metallurgical industry |
| CN112179579A (en) * | 2019-07-03 | 2021-01-05 | 康明斯动力技术有限公司 | Integrated COOLPAC micro-leakage test system |
-
2018
- 2018-06-26 CN CN201810670370.4A patent/CN108680319A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580122A (en) * | 2018-12-12 | 2019-04-05 | 中国北方发动机研究所(天津) | A kind of engine assembly detection hydrostatic testing machine and application 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 |
| CN112082594A (en) * | 2019-06-13 | 2020-12-15 | *** | Intelligent monitor for cylinder in metallurgical industry |
| CN112179579A (en) * | 2019-07-03 | 2021-01-05 | 康明斯动力技术有限公司 | Integrated COOLPAC micro-leakage test system |
| CN110336058A (en) * | 2019-07-26 | 2019-10-15 | 武汉众宇动力***科技有限公司 | A kind of fuel cell pack detection method and detection device |
| CN110336058B (en) * | 2019-07-26 | 2020-10-02 | 武汉众宇动力***科技有限公司 | Fuel cell stack detection method and detection device |
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| PB01 | Publication | ||
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Application publication date: 20181019 |