CN113607427A - Performance test device of high-strength miniature gas generator - Google Patents
Performance test device of high-strength miniature gas generator Download PDFInfo
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- CN113607427A CN113607427A CN202110874940.3A CN202110874940A CN113607427A CN 113607427 A CN113607427 A CN 113607427A CN 202110874940 A CN202110874940 A CN 202110874940A CN 113607427 A CN113607427 A CN 113607427A
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- exploder
- exploder body
- gas generator
- micro gas
- performance test
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- 238000011056 performance test Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 238000004880 explosion Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a performance test device of a high-strength micro gas generator, which comprises an exploder body, wherein the exploder body is of an open structure at one end, an opening of the exploder body is arranged at the top end of the exploder body, a pressing piece is fixed at the top end of the exploder body through a pressing head, through holes are formed in the axis directions of the pressing head and the pressing piece, two threaded holes are formed in the exploder body and are communicated with a cavity inside the exploder body, and a deflation plug and a sensor connector are respectively arranged in the two threaded holes through threads. The invention has high strength, can effectively lock high-temperature and high-pressure gas generated in the test in the cavity, has good sealing performance, reduces the risk of gas leakage of the device in the test process, reduces the error of the test result in the test process, is convenient for the pressure relief and the gas leakage of equipment after the test is finished, and is safe and reliable.
Description
Technical Field
The invention belongs to the technical field of high-strength micro gas generator testing, and relates to a performance testing device of a high-strength micro gas generator.
Background
In recent years, with the rapid development of automobile safety technology and the vigorous popularization and application of safety airbag products, the technology of initiating explosive devices, which are one of the core technologies of the system, of a Micro Gas Generator (MGG) is also rapidly developed, and the requirements on the quality, the performance and the reliability of the MGG as a core gas generating device in a pre-tightening safety belt are higher and higher. The conventional closed exploder bears the pressure of about 100MPa and cannot resist high temperature; the method is characterized in that a performance index with peak pressure of 200-250 MPa is required for a new product of the micro gas generator, a conventional sealed explosion device is used for performing a performance test, due to the fact that the pressure is too high and the temperature generated instantly is high, connecting threads of the sealed explosion device are prone to deformation, the overall air tightness of the sealed explosion device is reduced, the sealed explosion device leaks air, verification data are distorted, and the conventional sealed explosion device cannot meet the performance test requirements of the new product.
As shown in fig. 1, the conventional closed exploder is composed of a top pressure head 1, a connector 2, a body 3, a plug 4 and other parts, and in the test process, an operator cannot visually connect the sensor connector with the micro gas generator, so that the electrode needle is easy to bend and deform; the operating efficiency is reduced; in addition, the conventional sealed exploder is made of stainless steel materials, and the strength of each part is low, so that the threads are easy to deform under the conditions of high temperature and high pressure, air leakage of the sealed exploder is caused, and the experimental result is influenced.
Disclosure of Invention
The invention aims to provide a performance test device of a high-strength micro gas generator, which has high overall strength and good air tightness.
The invention adopts the technical scheme that the performance test device of the high-strength micro gas generator comprises a device body, wherein the body is of an open structure at one end, an opening of the body is arranged at the top end of the body, a pressing piece is fixed at the top end of the body through a pressing head, through holes are formed in the axis directions of the pressing head and the pressing piece, two threaded holes are formed in the body and are communicated with a cavity in the body, and a gas discharge plug and a sensor connector are respectively arranged in the two threaded holes through threads.
The present invention is also characterized in that,
an annular sealing groove is formed in the end face of the top end of the exploder body, and a sealing ring a is arranged in the annular sealing groove.
The thread of the threaded hole is made of British system threads.
A channel is arranged in the exploder body, and the threaded hole is communicated with a cavity inside the exploder body through the channel.
Two screw holes all set up in the middle part of the exploder body, and two screw hole axes all are perpendicular with exploder body axis direction.
And a sealing ring b is arranged between the deflation plug and the exploder body, and the sealing ring b is embedded in the end surface of one end, inserted into the exploder body, of the deflation plug.
And a sealing ring c is arranged between the sensor joint and the exploder body, and the sealing ring c is embedded in the end face of one end, inserted into the exploder body, of the deflation plug.
The invention has the beneficial effects that:
the performance test device for the high-strength micro gas generator is high in strength, high-temperature and high-pressure gas generated in the test can be effectively locked in the cavity, the sealing performance of the device is good, and the risk of gas leakage of the device in the test process is reduced; the MGG performance parameter measurement can be met, the error of a test result in the test process is reduced, meanwhile, the pressure relief and the air leakage of equipment after the test is finished are facilitated, the sample state can be rapidly switched according to the test conditions, the operation is convenient, and the test efficiency is greatly improved; the test period is shortened, the labor intensity of operators is reduced, and the method is safe and reliable; the utilization rate of the equipment is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional closed detonator;
FIG. 2 is a schematic cross-sectional view of an embodiment of the apparatus for testing the performance of a high strength micro gas generator according to the present invention;
FIG. 3 is a schematic structural diagram of a exploder body of a performance testing device of a high-strength micro gas generator, which is disclosed by the invention;
FIG. 4 is a schematic structural view of a threaded hole of a performance testing device of a high-strength micro gas generator according to the present invention;
FIG. 5 is a schematic view of the construction of a compression element of the performance testing apparatus of a high strength micro gas generator according to the present invention;
FIG. 6 is a schematic view of a sensor connector of a performance testing apparatus for a high-strength micro gas generator according to the present invention;
FIG. 7 is a schematic view of the structure of the air-bleeding plug of the performance testing device of the high-strength micro gas generator of the present invention;
FIG. 8 is a pressure-time graph of a micro gas generator at ambient temperature;
FIG. 9 is a pressure-time graph of a micro gas generator at cryogenic conditions;
FIG. 10 is a pressure-time graph of a micro gas generator at high temperature.
In the figure, 1, a top pressure head, 2, a joint, 3, a body, 4, a plug, 5, an exploder body, 6, a pressure head, 7, a pressing piece, 8, a deflation plug, 9, a sensor joint, 10, an annular sealing groove, 11, sealing rings a, 12, a sealing ring b, 13 and a sealing ring c are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
The embodiment provides a performance test device of a high-strength micro gas generator, which comprises a exploder body 5, as shown in fig. 2, wherein the outside of the exploder body 5 is in a cylindrical shape, and the circumferential side surface of the exploder body 5 is provided with two tangent planes parallel to the axial direction of the exploder body, the exploder body 5 is of a structure with an opening at one end, the opening of the exploder body 5 is arranged at the top end of the exploder body, the top end of the exploder body 5 is fixed with a pressing piece 7 through a pressing head 6, through holes are arranged in the axial direction of the pressing head 6 and the pressing piece 7, and two screw hole axes all are perpendicular with 5 axis directions of explosion ware body, and two screw holes have been seted up at 5 middle parts of explosion ware body, and the screw thread of screw hole is imperial system screw thread, and two screw holes are located two tangent planes respectively, open in the explosion ware body 5 and establish the passageway, and the screw hole passes through the passageway and communicates with the inside cavity of explosion ware body 5, is provided with gassing end cap 8 and sensor joint 9 respectively through the screw thread in two screw holes.
An annular sealing groove is formed in the end face of the top end of the exploder body 5, and a sealing ring a11 is arranged in the annular sealing groove 10.
A sealing ring b12 is arranged between the deflation plug 8 and the exploder body 5, and a sealing ring b12 is embedded in the end face of one end of the deflation plug inserted into the exploder body 5.
A sealing ring c13 is arranged between the sensor joint 9 and the exploder body 5, and a sealing ring c13 is embedded in the end face of one end of the deflating plug inserted into the exploder body 5.
The invention provides a performance test device of a high-strength micro gas generator, which is characterized in that:
first, as shown in fig. 3, the exploder body 5 is of an open-end structure, the overall structural strength is high, high-temperature and high-pressure gas can be effectively locked inside a cavity in the exploder body 5, the requirement that the peak pressure of a new micro gas generator product is 200-250 MPa is met, meanwhile, a sealing ring is arranged at the open end of the exploder body 5, the sealing performance of the device can be greatly improved, the risk of gas leakage of the device in the test process is reduced, a tangent plane is designed at the periphery of the exploder body 5, so that the gas discharge plug 8 and the sensor connector 9 are both tightly matched with the exploder body 5, and the whole device is convenient to fix in the test.
Second characteristics, as shown in fig. 4, the screw hole of two the same specifications of design on the exploder body 5, compare metric system screw thread on the airtight exploder body of conventionality, this design has adopted imperial system screw thread, intensity and life improve greatly, gassing end cap 8 and sensor joint 9 can be installed simultaneously to these two screw holes, gassing end cap 8 and sensor joint 9 tip all are provided with the sealing washer, compare the airtight exploder of conventionality, this design very big degree has improved the gas tightness of device, the precision of test data has not only been improved, the pressure release of equipment is lost heart after convenient experimental completion again, the experimental risk has been reduced, guarantee operator's operation safety is swift.
Thirdly, as shown in fig. 5, compared with the design that the joint 2 of the conventional closed exploder is inserted into the body for a certain depth, the design of the pressing piece shortens the distance between the electrode needle and the pressure head of the MGG product, optimizes the previous plugging and unplugging process of the electrode needle plug, enables an operator to visually align the plug and the electrode needle, shortens the operation time, reduces the risk and improves the experiment efficiency.
Fourthly, as shown in fig. 6, the sensor joint 9 can connect the sensor and the exploder body 5 together, the English system thread ensures the whole air tightness of the device, the use of the sensor joint 9 can reduce the thread abrasion when the sensor is directly connected with the exploder body 5, reduce the risk of air leakage of the device, and meanwhile, the sensor joint 9 is suitable for various sensors and is convenient for collecting various data; as shown in figure 7, the air-discharging plug 8 can be unscrewed after the test is finished, so as to release the pressure of the device, and prevent the high-temperature and high-pressure gas from being sprayed out in a large amount in a short time to cause damage to the operator.
The performance test device for the high-strength micro gas generator is adopted to perform the performance test of the micro gas generator, the pressure of the micro gas generator under the conditions of normal temperature, low temperature and high temperature is respectively tested, the measured pressure-time data is shown in figures 8-10, and the corresponding test results are respectively shown in tables 1-3;
TABLE 1 test results at Normal temperature
TABLE 2 results of the Low temperature test
TABLE 3 high temperature test results
According to the test results, the instantaneous temperature of the micro gas generator is 3000 ℃, the lowest peak pressure is 219.49MPa, the highest peak pressure is 242.41MPa, the design standard of the closed exploder is 200-250 MPa, and the test device does not leak gas or deform after the experiment is finished.
Claims (7)
1. The performance test device for the high-strength micro gas generator is characterized by comprising an exploder body (5), wherein the exploder body (5) is of an open structure at one end, an opening of the exploder body (5) is formed in the top end of the exploder body, a pressing piece (7) is fixed to the top end of the exploder body (5) through a pressing head (6), through holes are formed in the axis directions of the pressing head (6) and the pressing piece (7), two threaded holes are formed in the exploder body (5), the two threaded holes are communicated with a cavity inside the exploder body (5), and a deflation plug (8) and a sensor joint (9) are arranged in the two threaded holes through threads respectively.
2. The performance test device of the high-strength micro gas generator as claimed in claim 1, wherein an annular sealing groove is formed in the end face of the top end of the exploder body (5), and a sealing ring a (11) is arranged in the annular sealing groove (10).
3. The apparatus for testing performance of a high strength micro gas generator as claimed in claim 3, wherein the thread of the threaded hole is a British screw.
4. The performance test device of the high-strength micro gas generator as claimed in claim 1, wherein a channel is formed in the exploder body (5), and the threaded hole is communicated with the chamber inside the exploder body (5) through the channel.
5. The performance test device of the high-strength micro gas generator as claimed in claim 1, wherein two threaded holes are arranged in the middle of the exploder body (5), and the axes of the two threaded holes are perpendicular to the axial direction of the exploder body (5).
6. The performance test device of the high-strength micro gas generator as claimed in claim 5, wherein a sealing ring b (12) is arranged between the air discharging plug (8) and the exploder body (5), and the sealing ring b (12) is embedded in an end face of one end of the air discharging plug inserted into the exploder body (5).
7. The performance test device of the high-strength micro gas generator as claimed in claim 5, wherein a sealing ring c (13) is arranged between the sensor joint (9) and the exploder body (5), and the sealing ring c (13) is embedded in an end face of one end of the gas discharging plug inserted into the exploder body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110874940.3A CN113607427A (en) | 2021-07-30 | 2021-07-30 | Performance test device of high-strength miniature gas generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110874940.3A CN113607427A (en) | 2021-07-30 | 2021-07-30 | Performance test device of high-strength miniature gas generator |
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| CN113607427A true CN113607427A (en) | 2021-11-05 |
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| CN202110874940.3A Pending CN113607427A (en) | 2021-07-30 | 2021-07-30 | Performance test device of high-strength miniature gas generator |
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| CN2909210Y (en) * | 2005-08-23 | 2007-06-06 | 比亚迪股份有限公司 | Performance testing device for safety bag air generator |
| CN102087242A (en) * | 2009-11-12 | 2011-06-08 | 德拉格安全股份两合公司 | Gas sensor with test gas generator |
| CN202453141U (en) * | 2012-01-13 | 2012-09-26 | 浙江吉利汽车研究院有限公司 | Pressure vessel device of automobile gas generator |
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| CN204210421U (en) * | 2014-11-18 | 2015-03-18 | 陕西庆华汽车安全系统有限公司 | A kind of belt with pre-load device micro gas generator |
| CN105004495A (en) * | 2015-07-02 | 2015-10-28 | 高田（长兴）汽车安全装置有限公司 | Gas generator gas outlet aluminum foil attaching sealing detection device and detection method |
| CN106226091A (en) * | 2016-07-21 | 2016-12-14 | 浙江吉利控股集团有限公司 | A kind of air-cushion inflator device for detecting performance |
| CN205910011U (en) * | 2016-07-20 | 2017-01-25 | 浙江吉利控股集团有限公司 | Car air bag gas generator's point explodes test device |
| CN109297722A (en) * | 2018-09-21 | 2019-02-01 | 奇瑞汽车股份有限公司 | A kind of mounting device of air-cushion inflator test |
| CN109580697A (en) * | 2018-12-13 | 2019-04-05 | 中国兵器科学研究院宁波分院 | Gun tube material ablation experimental rig and method |
-
2021
- 2021-07-30 CN CN202110874940.3A patent/CN113607427A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909210Y (en) * | 2005-08-23 | 2007-06-06 | 比亚迪股份有限公司 | Performance testing device for safety bag air generator |
| CN102087242A (en) * | 2009-11-12 | 2011-06-08 | 德拉格安全股份两合公司 | Gas sensor with test gas generator |
| CN202453141U (en) * | 2012-01-13 | 2012-09-26 | 浙江吉利汽车研究院有限公司 | Pressure vessel device of automobile gas generator |
| CN204210421U (en) * | 2014-11-18 | 2015-03-18 | 陕西庆华汽车安全系统有限公司 | A kind of belt with pre-load device micro gas generator |
| CN104374562A (en) * | 2014-11-26 | 2015-02-25 | 浙江吉利汽车研究院有限公司 | Testing device and testing method |
| CN105004495A (en) * | 2015-07-02 | 2015-10-28 | 高田（长兴）汽车安全装置有限公司 | Gas generator gas outlet aluminum foil attaching sealing detection device and detection method |
| CN205910011U (en) * | 2016-07-20 | 2017-01-25 | 浙江吉利控股集团有限公司 | Car air bag gas generator's point explodes test device |
| CN106226091A (en) * | 2016-07-21 | 2016-12-14 | 浙江吉利控股集团有限公司 | A kind of air-cushion inflator device for detecting performance |
| CN109297722A (en) * | 2018-09-21 | 2019-02-01 | 奇瑞汽车股份有限公司 | A kind of mounting device of air-cushion inflator test |
| CN109580697A (en) * | 2018-12-13 | 2019-04-05 | 中国兵器科学研究院宁波分院 | Gun tube material ablation experimental rig and method |
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