CN108088623A - For 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method - Google Patents
For 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method Download PDFInfo
- Publication number
- CN108088623A CN108088623A CN201711295103.5A CN201711295103A CN108088623A CN 108088623 A CN108088623 A CN 108088623A CN 201711295103 A CN201711295103 A CN 201711295103A CN 108088623 A CN108088623 A CN 108088623A
- Authority
- CN
- China
- Prior art keywords
- vacuum chamber
- chamber system
- helium
- printing equipment
- leak
- 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.)
- Granted
Links
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 present invention provides one kind for 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method, which includes helium mass analyzer, detecting tool and vacuum chamber system to be detected.In addition, in above-mentioned leakage detection apparatus, the vacuum chamber system is to maintain the vacuum chamber system of hermetic environment, including：Vacuum tank；Hopper, filter, air blower, helium tank, the vacuum pump being connected respectively with the vacuum tank；Connect the pipeline of the filter and the air blower；And hermatic door.Can air-leakage test be carried out to 3D printing equipment in the operating condition according to the present invention as a result, so as to produce the good 3D printing equipment of air-tightness.
Description
Technical field
The present invention relates to 3D printing air-leakage test fields more particularly to a kind of 3D printing equipment vacuum chamber system that is used for examine
Leakage device and leak hunting method.
Background technology
In metal 3D printing field, air-tightness is one of important vital unalterable quota of equipment.Equipment air-tightness is
Influence one of several key factors of engineer testing.Air-tightness does not meet the negative effect of design requirement generation, is divided by degree：
The lighter, equipment air consumption is big, while part forming is of poor quality；Severe one, part oxidation can not be seriously molded；More very, equipment is influenced
Operational safety, such as Al alloy powder are dangerous high, so more harsh to oxygen content requirement.
Existing metal 3D printing equipment, which can be divided into, to be vacuumized and does not vacuumize two major classes.It is set according to existing 3D printing
Standby air consumption statistics understands that the air consumption of vaccum-pumping equipment is not much larger than the air consumption of vaccum-pumping equipment, is usually 4~10
Times.And the air consumption significant difference of all kinds of brands of vaccum-pumping equipment and model, wherein using Reinshaw as the vaccum-pumping equipment of representative
Air consumption is about 0.25L/h, continuously can print two weeks and be changed without the helium tank of 40L, and domestic equipment substantially all exists at present
1L/h magnitudes.In addition, by comparison, equipment air consumption is negatively correlated greatly with the quality of its forming part, and air consumption is bigger
Forming Quality is poorer.In order to control air consumption, the good equipment of air-tightness is produced, it is necessary to using certain detection method and work
Dress is detected and repairs to the air-tightness under equipment working state.
It is disclosed by the invention a kind of for 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method, it can work
The air-tightness of equipment is detected under state, can the leak rate situation of consersion unit in the operating condition exactly, Neng Goujing
It really determines that equipment air-tightness needs improved key position, so as to improve equipment air-tightness, ensures forming parts quality.
Problems to be solved by the invention：
In view of the above problems, the present inventors are directed to proposing a kind of for the inspection of 3D printing equipment vacuum chamber system
Leakage device and leak hunting method, in the process can not be airtight in detection device under operating mode to solve the development of 3D printing field devices or use
The problem of poor air-tightness can not be positioned and repaired under property and work condition state.
The content of the invention
It is an object of the invention to provide one kind to be used for 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method,
Can air-leakage test be carried out to 3D printing equipment in the operating condition, so as to produce the good 3D printing equipment of air-tightness.
The present invention for 3D printing equipment vacuum chamber system leakage detection apparatus, including helium mass analyzer, detecting tool and
Vacuum chamber system to be detected.
Optionally, it is above-mentioned in 3D printing equipment vacuum chamber system leakage detection apparatus, the vacuum chamber system to be to maintain gas
The vacuum chamber system of close property environment, including：Vacuum tank；The hopper that is connected respectively with the vacuum tank, filter, air blower,
Helium tank, vacuum pump；Connect the pipeline of the filter and the air blower；And hermatic door.
Optionally, it is above-mentioned in 3D printing equipment vacuum chamber system leakage detection apparatus, the helium mass analyzer to have：Helium leak test
Instrument；It is arranged at the suction gun of the Helium leak detector；The molecular pump and adjuster being arranged on outside the Helium leak detector, the molecular pump lead to
The adjuster is crossed into line frequency and the adjusting control of flow velocity.
Optionally, it is above-mentioned to be used in 3D printing equipment vacuum chamber system leakage detection apparatus, the interface of the detecting tool and institute
Suction gun connection is stated, which is circular-arc detection frock, adjustable height detecting tool, cylindrical parts detecting tool and narrow slit
Any one in detecting tool.
The present invention's is used for 3D printing equipment vacuum chamber system leak hunting method, includes the following steps.
Vacuum pumping is carried out to vacuum chamber system using vacuum pump, pressure in babinet is made to reach pressure predetermined value；
To carrying out helium filling in the babinet, stop tonifying Qi when reaching equipment working state pressure；
Opening air blower makes gas in the babinet internal circulation flow；
Helium mass analyzer and molecular pump are opened, the amount of helium of measuring environment is measured；
Equipment carries out t1 times pressurize experiment, in the case that pressure is still kept after the t1 times, carries out helium mass spectrum leak detection；
It to be detected using the suction gun for being connected with detecting tool to there may be the structures of leakage or component；
Detection records each point data, if equipment leak rate is more than leak rate setting value, there are leak source at this, if leak rate is little
In leak rate setting value, then leak rate is normal at this.
Invention effect：
As described above, the present invention proposes that one kind is used for 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method,
It can carry out air-leakage test to 3D printing equipment in the operating condition, exactly the leak rate of consersion unit in the operating condition
Situation determines leak source according to air-leakage test data, and equipment air-tightness, which is precisely determined, needs improved key position, leads to
It crosses and implements corresponding air-tightness corrective measure raising equipment air-tightness, ensure forming parts quality, it is good so as to produce air-tightness
Good 3D printing equipment.
Description of the drawings
Fig. 1 is the schematic diagram for 3D printing equipment vacuum chamber system leakage detection apparatus of an embodiment of the present invention.
Fig. 2 is the schematic diagram of the vacuum chamber system 1 of an embodiment of the present invention.
Fig. 3 is the schematic diagram of the modified helium mass analyzer 2 of an embodiment of the present invention.
Fig. 4 (a)~(d) is the schematic diagram of the detecting tool 3 of an embodiment of the present invention.
Specific embodiment
In the following, with reference to attached drawing, 3D printing equipment vacuum chamber system leakage detection apparatus and leak detection side are used for of the present invention
One embodiment of method is described in detail.A present embodiment of the invention preferred embodiment by way of example only, but
It is not to be construed as limiting the invention.
As shown in drawings, present embodiment for 3D printing equipment vacuum chamber system leakage detection apparatus, including helium mass spectrum
Instrument 2, detecting tool 3 and vacuum chamber system 1 to be detected.
In present embodiment, vacuum chamber system 1 is to maintain the vacuum chamber system of hermetic environment, including：Vacuum tank
101；Hopper 102, filter 103, air blower 104, helium tank 106, the vacuum pump 107 being connected respectively with vacuum tank 101；Connection
The pipeline 105 of filter 103 and air blower 104；And hermatic door.In addition, other all building blocks during vacuum chamber system 1
Reference for installation is the critical component for ensureing to maintain atmosphere.
In present embodiment, helium mass analyzer 2 has Helium leak detector 201；It is arranged at the suction gun 202 of Helium leak detector 201；It sets
Molecular pump 203 and adjuster 204 outside Helium leak detector 201, the molecular pump 203 is by adjuster 204 into line frequency and stream
The adjusting control of speed.That is, helium mass analyzer is properly modified, in the base of former instrument (containing Helium leak detector 201 and suction gun 202)
The adjuster 204 of molecular pump 203 and functional requirement is added on plinth.
In addition, the interface of detecting tool 3 is connected with the suction gun 202 of helium mass analyzer 2, which is circular-arc detection work
Any one in dress, adjustable height detecting tool, cylindrical parts detecting tool and narrow slit detecting tool.
In present embodiment, in order to accurate measuring apparatus interface and partial structurtes entirety leak rate situation, one is devised
Set can meet the special frock of different structure parts air-leakage test, i.e. detecting tool 3 can be used for cambered surface part gas
The circular-arc detection frock 301 of close property detection；For the adjustable height detecting tool of large parts entirety air-leakage test
302, height-adjustable scope is in H ± e；For the cylindrical parts air-tightness detection tool 303 of cylindrical parts detection, can surround
Package cylindrical parts simultaneously detect its local air-tightness；For the narrow slit air-tightness detection tool 304 of narrow gap structure, can be used for
Detect the air-tightness at narrow gap structure.Thereby, it is possible to accurate detection device single-points and the whole air-tightness of partial structurtes.
Four kinds of above-mentioned detecting tools 3 only need to use in interface connection suction gun 202, and mounting means is simple,
And can fast assembling-disassembling, operation possibility is high, and air-leakage test result is accurate.
In addition, present embodiment is used for 3D printing equipment vacuum chamber system leak hunting method, include the following steps.
Vacuum pumping is carried out to vacuum chamber system 1 using vacuum pump 107, pressure in babinet is made to reach pressure predetermined value.
To carrying out helium filling in the babinet, stop tonifying Qi when reaching equipment working state pressure.
Opening air blower 104 makes gas in the babinet internal circulation flow.
Helium leak detector 201 and molecular pump 203 are opened, the amount of helium of measuring environment is measured.
Equipment carries out t1 times, such as pressurize in 30 minutes experiment, the situation that pressure is still kept after 30 minutes t1 times
Under, carry out helium mass spectrum leak detection；The t1 times are 30 minutes in present embodiment, but the present invention is not limited, in other implementations
In mode, other times can also be according to circumstances selected.
It to be detected using the suction gun 202 for being connected with detecting tool 3 to there may be the structures of leakage or component.For not
Same structure, may be employed different detecting tools, and 3D printing equipment vacuum is used for referring in particular to above-mentioned present embodiment
Chamber system leakage detection apparatus.
Detection records each point data, if equipment leak rate is more than leak rate setting value, there are leak source at this, if leak rate is little
In leak rate setting value, then leak rate is normal at this.Leak rate setting value mentioned here is set according to national examination criteria.
Then detection terminates, pass hull closure, stops air-leakage test.
In the leak hunting method of present embodiment, in order to enable helium mass analyzer 2 can be suitable for 3D printing equipment work shape
Air-leakage test under state properly modifies the former helium mass analyzer device being made of Helium leak detector 201 and suction gun 202,
The molecular pump 203 of adjustable frequency and flow velocity is connected outside Helium leak detector 201, which can pass through adjuster
204 into line frequency and flow velocity adjusting control.
In conclusion it is disclosed by the invention a kind of for 3D printing equipment vacuum chamber system leakage detection apparatus and method, it can
The air-tightness of equipment is detected in the operating condition, can the leak rate situation of consersion unit in the operating condition exactly,
Equipment air-tightness, which can be precisely determined, needs improved key position, is arranged by strictly testing process and correct remedy
Raising equipment air-tightness that can be larger is applied, so as to ensure forming parts quality.
The present invention is described in detail above.As it will be easily appreciated by one skilled in the art that above description is only this hair
Bright preferred embodiment, the present invention is not limited to the above specific embodiments, it is all the spirit and principles in the present invention it
Interior made any modification, replacement and improvement etc., should be included in the present invention claim it is claimed within the scope of.
Claims (5)
1. one kind be used for 3D printing equipment vacuum chamber system leakage detection apparatus, which is characterized in that including helium mass analyzer, detecting tool,
And vacuum chamber system to be detected.
2. 3D printing equipment vacuum chamber system leakage detection apparatus is used for as described in claim 1, which is characterized in that
The vacuum chamber system is to maintain the vacuum chamber system of hermetic environment, including：
Vacuum tank；
Hopper, filter, air blower, helium tank, the vacuum pump being connected respectively with the vacuum tank；
Connect the pipeline of the filter and the air blower；And
Hermatic door.
3. 3D printing equipment vacuum chamber system leakage detection apparatus is used for as described in claim 1, which is characterized in that
The helium mass analyzer has：Helium leak detector；It is arranged at the suction gun of the Helium leak detector；It is arranged on outside the Helium leak detector
Molecular pump and adjuster, the molecular pump is by the adjuster into line frequency and the adjusting control of flow velocity.
4. according to any one of claims 1 to 3 for 3D printing equipment vacuum chamber system leakage detection apparatus, feature exists
In,
The interface of the detecting tool is connected with the suction gun, which is circular-arc detection frock, adjustable height detects
Any one in frock, cylindrical parts detecting tool and narrow slit detecting tool.
5. one kind is used for 3D printing equipment vacuum chamber system leak hunting method, which is characterized in that including：
Vacuum pumping is carried out to vacuum chamber system using vacuum pump, pressure in babinet is made to reach pressure predetermined value；
To carrying out helium filling in the babinet, stop tonifying Qi when reaching equipment working state pressure；
Opening air blower makes gas in the babinet internal circulation flow；
Helium mass analyzer and molecular pump are opened, the amount of helium of measuring environment is measured；
Equipment carries out t1 times pressurize experiment, in the case that pressure is still kept after the t1 times, carries out helium mass spectrum leak detection；
It to be detected using the suction gun for being connected with detecting tool to there may be the structures of leakage or component；
Detection records each point data, if equipment leak rate is more than leak rate setting value, there are leak source at this, if leak rate is no more than leakage
Rate setting value, then leak rate is normal at this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295103.5A CN108088623B (en) | 2017-12-08 | 2017-12-08 | Vacuum chamber system leakage detection device and method for 3D printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711295103.5A CN108088623B (en) | 2017-12-08 | 2017-12-08 | Vacuum chamber system leakage detection device and method for 3D printing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108088623A true CN108088623A (en) | 2018-05-29 |
| CN108088623B CN108088623B (en) | 2020-08-25 |
Family
ID=62174381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711295103.5A Active CN108088623B (en) | 2017-12-08 | 2017-12-08 | Vacuum chamber system leakage detection device and method for 3D printing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108088623B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788152A (en) * | 2018-06-29 | 2018-11-13 | 武汉大学 | Have the increasing material system of processing and method of environment composition on-line checking function |
| CN108844690A (en) * | 2018-07-12 | 2018-11-20 | 上海航天设备制造总厂有限公司 | A kind of pressure reducer leak rate test macro and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408466A (en) * | 2008-11-08 | 2009-04-15 | 宁夏电力科技教育工程院 | Method and device for detecting leakage of shell type heat exchanger |
| CN201464134U (en) * | 2009-03-16 | 2010-05-12 | 浙江上能锅炉有限公司 | Vacuum leak detection device of vacuum hot-water boiler |
| CN205067031U (en) * | 2015-09-23 | 2016-03-02 | 梅晨 | Vehicle leaks comprehensive testing instrument |
| CN106525354A (en) * | 2016-11-21 | 2017-03-22 | 江苏安靠智能输电工程科技股份有限公司 | Leak detection system and method for gas pipeline bus housing |
| CN206609571U (en) * | 2017-03-28 | 2017-11-03 | 凯盛重工有限公司 | A kind of vacuum coating cavity leak detection system |
-
2017
- 2017-12-08 CN CN201711295103.5A patent/CN108088623B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408466A (en) * | 2008-11-08 | 2009-04-15 | 宁夏电力科技教育工程院 | Method and device for detecting leakage of shell type heat exchanger |
| CN201464134U (en) * | 2009-03-16 | 2010-05-12 | 浙江上能锅炉有限公司 | Vacuum leak detection device of vacuum hot-water boiler |
| CN205067031U (en) * | 2015-09-23 | 2016-03-02 | 梅晨 | Vehicle leaks comprehensive testing instrument |
| CN106525354A (en) * | 2016-11-21 | 2017-03-22 | 江苏安靠智能输电工程科技股份有限公司 | Leak detection system and method for gas pipeline bus housing |
| CN206609571U (en) * | 2017-03-28 | 2017-11-03 | 凯盛重工有限公司 | A kind of vacuum coating cavity leak detection system |
Non-Patent Citations (1)
| Title |
|---|
| 《家用电器测试技术讲义》: "《家用电器测试技术讲义》", 31 August 1992 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788152A (en) * | 2018-06-29 | 2018-11-13 | 武汉大学 | Have the increasing material system of processing and method of environment composition on-line checking function |
| CN108788152B (en) * | 2018-06-29 | 2019-08-20 | 武汉大学 | Have the increasing material system of processing and method of environment composition on-line checking function |
| CN108844690A (en) * | 2018-07-12 | 2018-11-20 | 上海航天设备制造总厂有限公司 | A kind of pressure reducer leak rate test macro and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108088623B (en) | 2020-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107340101B (en) | Gas micro-leakage detection device and method for sealing device | |
| CN106226000B (en) | A kind of vacuum sealing performance measurement device and method | |
| CN103822761B (en) | Device for detecting sealability and method | |
| CN105675224B (en) | The detection method of encapsulating package sealing propertytest system | |
| CN101592547A (en) | The method of anesthesia machine system Leak Detection | |
| CN103335795B (en) | Vacuum seal dividing potential drop leakage rate measurement system and measuring method thereof | |
| CN107907273B (en) | A kind of partially sealed outer surface air-tightness detection method of product | |
| CN103759904B (en) | System for detecting sealing performance | |
| CN108088623A (en) | For 3D printing equipment vacuum chamber system leakage detection apparatus and leak hunting method | |
| JP2005055263A (en) | Leakage gas detector | |
| CN106525353B (en) | High-pressure aerated connecting tube defect inspection method | |
| CN210036906U (en) | Negative pressure source device and gas meter verification gas circuit system | |
| CN105738037A (en) | Plasma reaction cavity seepage detection method | |
| KR101174270B1 (en) | Measurement System and Methods of Pumping Speed of Vacuum Pumps Using Sonic Nozzles | |
| CN211401576U (en) | High-precision volume pressure-drop type air tightness leak detector | |
| CN107966252A (en) | A kind of leakage amount detector of micrometeor air seal | |
| CN208888063U (en) | It is a kind of for testing the device of sebific duct compressive resistance | |
| JP2018505416A (en) | Structure and method for checking the tightness of containers | |
| CN213148199U (en) | Testing device of air pressure sensor | |
| CN110243444A (en) | Negative pressure source device, detecting gas meter air-channel system and calibration method | |
| CN204666320U (en) | A kind of air-tightness detection device of ship valve | |
| CN216645537U (en) | Temperature and pressure measurement system of sound velocity nozzle standard device | |
| CN205620092U (en) | A automatic detecting system for detecting radio frequency products gas tightness | |
| CN205808782U (en) | A kind of vacuum withdraw device of short neck nozzle | |
| JP4605927B2 (en) | Leak test equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |