CN108489726B - Durability detection device for gas pressure regulator membrane - Google Patents
Durability detection device for gas pressure regulator membrane Download PDFInfo
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- CN108489726B CN108489726B CN201810498887.XA CN201810498887A CN108489726B CN 108489726 B CN108489726 B CN 108489726B CN 201810498887 A CN201810498887 A CN 201810498887A CN 108489726 B CN108489726 B CN 108489726B
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- plenum chamber
- membrane
- pressure regulator
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- 239000012528 membrane Substances 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Reciprocating Pumps (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a durability detection device for a gas pressure regulator membrane, which comprises a frame, a positioning component and a vibration component, wherein the frame is provided with a plurality of positioning grooves; the positioning component is fixed at one side of the top end of the frame and comprises an air pump, a plenum chamber, a pressure gauge and a diaphragm clamping disc, the plenum chamber is connected with the air pump, the pressure gauge is arranged at the top end of the plenum chamber and is communicated with the inner cavity of the plenum chamber, the diaphragm clamping disc is correspondingly arranged at the opening end of the inner cavity of the plenum chamber, and a through hole is formed in the center of the diaphragm clamping disc; the vibration assembly is fixed on one side of the top end of the frame far away from the positioning assembly and comprises a driving mechanism and a connecting rod mechanism, one end of the connecting rod mechanism is fixedly connected with the driving mechanism, and the other end of the connecting rod mechanism is fixedly connected with the center of the diaphragm. This a durability detection device for gas pressure regulator diaphragm passes through the ingenious cooperation of locating component and vibration subassembly, and the structure is succinct reasonable, and the involucra diaphragm loading and unloading is convenient, and sealing performance is good, and maneuverability is strong, and detection data is accurate, is applicable to the detection of multiple pressure regulator diaphragm.
Description
Technical field:
the invention relates to the technical field of gas equipment detection, in particular to a durability detection device for a gas pressure regulator membrane.
The background technology is as follows:
The gas pressure regulator is taken as an important component of gas equipment, is widely applied to various fields of people living, heating, refrigeration, power generation and the like, and along with continuous forward development of economy and urban gas industry in China, people put forward higher requirements on the quality, performance and safety of the gas equipment, and in order to ensure the safety and reliability of urban gas supply, only the high-quality novel gas pressure regulator meeting market demands and having independent knowledge is continuously sent out, so that the gas pressure regulator gradually replaces imports, the manufacturing level of the gas equipment can be improved, and the competitive capacity of enterprises is improved.
In the prior art, the gas pressure regulator is generally provided with a diaphragm, and the diaphragm needs to continuously reciprocate during working, so that the pressure regulating diaphragm is a wearing part of the gas pressure regulator and needs to be replaced. The existing diaphragm durability detection device is as a gas pressure regulator diaphragm testing machine disclosed in patent number CN202442864U, and comprises a diaphragm tray for fixing a diaphragm and a driving mechanism for driving the diaphragm and the diaphragm tray to reciprocate up and down simultaneously, and the service life of the diaphragm is detected by simulating the movement mode of the diaphragm in the gas pressure regulator. However, the structure is complex, the manufacturing cost is high, the diaphragm is arranged in a cavity formed by the upper valve cover and the lower valve cover, the volume of the gas pressure regulator is large, the weight is heavy, the time and the labor are wasted during the installation of the diaphragm, the vibration reciprocating stroke of the structure is not adjustable, and the detection cannot be carried out in a targeted manner; meanwhile, as the harshness and diversity of the environment where the diaphragm is positioned are not considered, the diaphragm is only simulated in the atmospheric pressure environment, and the diaphragm is inaccurate and limited in detection; in addition, because the diaphragm is fixed through the diaphragm tray and moves up and down simultaneously, the diaphragm tray has supporting force to the diaphragm, and the detection result is inaccurate. In summary, although the gas pressure regulator membrane testing machine can roughly measure the service life of the membrane, the measurement result is not accurate, and experiments show that the measured membrane life data is obviously longer than the actual service life.
The invention comprises the following steps:
Aiming at the defects of the prior art, the invention provides the durability detection device for the diaphragm of the gas pressure regulator, which has the advantages of simple structure, convenient operation, strong universality and accurate measurement.
The invention is realized by the following technical scheme: a durability detection device for a gas pressure regulator membrane comprises a frame, a positioning component for clamping the membrane and a vibration component for driving the membrane to vibrate.
First of all, the problem of positioning the membrane is considered. In the prior art, according to the special shape of the diaphragm, a supporting plate structure which is basically the same as the shape of the diaphragm is generally adopted to support the diaphragm, however, the action of the supporting plate on the supporting force of the diaphragm is not considered by the prior art, and experimental data show that the action and the reaction force actually greatly influence detection data. Meanwhile, workers in the prior art do not consider that certain pressure exists in the gas pressure regulator, and the pressure has reverse thrust to the diaphragm and has certain influence on a measurement result.
Therefore, how to fix the membrane, facilitate the positioning and the installation of the membrane, and make the deviation between the environment where the membrane is positioned and the actual use environment smaller is a technical problem to be solved by the invention.
The invention designs a special positioning component, which is fixed on one side of the top end of a frame and comprises an air pump, a plenum chamber, a pressure gauge and a membrane clamping disc, wherein the plenum chamber is connected with the air pump, the pressure gauge is arranged on the top end of the plenum chamber and is communicated with an inner cavity of the plenum chamber, the membrane clamping disc is correspondingly arranged at the opening end of the inner cavity of the plenum chamber, the center of the membrane clamping disc is provided with a through hole, and the membrane clamping disc can cover a membrane at the opening end of the inner cavity of the plenum chamber.
In order to facilitate the membrane clamping plate to effectively compress the membrane and prevent the air leakage of the air inflation chamber, the outer end of the air inflation chamber is detachably connected with a flange plate, and the membrane clamping plate can cover the membrane on the flange plate.
Then, the driving problem of the membrane is considered. In the prior art, the simulation driving is generally performed according to the vibration mode of the diaphragm in the actual use process. However, the driving mechanism is relatively single, and can only detect the diaphragm with one size, and because of the structural limitation, electronic components such as a sensor are needed for metering sensing, and the cost is relatively high.
Therefore, how to match with the positioning component to make the positioning component reciprocate according to the diaphragms with different sizes and reduce the production cost is another technical problem to be solved by the invention.
The invention designs a special vibration assembly, wherein the vibration assembly is fixed at one side of the top end of a frame far away from a positioning assembly and comprises a driving mechanism and a connecting rod mechanism, one end of the connecting rod mechanism is fixedly connected with the driving mechanism, the other end of the connecting rod mechanism is fixedly connected with the center of a diaphragm, and the driving mechanism can drive the center of the diaphragm to reciprocate along the horizontal direction through the connecting rod mechanism.
The driving mechanism comprises a driving motor, a belt pulley, a gearbox and a movement turntable, wherein the driving motor is connected with the gearbox through the belt pulley, the gearbox is connected with the connecting rod mechanism through the movement turntable, and the driving motor drives the movement turntable to rotate through the belt pulley and the gearbox so as to enable the connecting rod mechanism to reciprocate.
The connecting rod mechanism comprises a pushing connecting rod and a horizontal connecting rod, one end of the pushing connecting rod is movably connected with one end of the horizontal connecting rod through a universal joint, the other end of the pushing connecting rod, which is far away from the universal joint, is fixedly connected with one end of the movement turntable, the other end of the horizontal connecting rod, which is far away from the universal joint, is fixedly connected with the center of the diaphragm, and the movement turntable drives the horizontal connecting rod to reciprocate along the horizontal direction through the pushing connecting rod.
In order to accurately measure the detection data, the invention also comprises a counter, wherein the counter is connected with the movement turntable, and the movement data is recorded through the ingenious matching of the counter and the movement turntable.
In order to ensure the stability of the movement of the horizontal connecting rod, the bottom end of the horizontal connecting rod is provided with a fixer for supporting the horizontal connecting rod.
In order to prevent impurities in the air from affecting detection data, the air pump is connected with the plenum chamber through the oil-water separator.
The beneficial effects of the invention are as follows: this a durability detection device for gas pressure regulator diaphragm passes through the ingenious cooperation of locating component and vibration subassembly, and the structure is succinct reasonable, and the involucra diaphragm loading and unloading is convenient, and sealing performance is good, and maneuverability is strong, and detection data is accurate, is a pertinence stronger, is applicable to the professional test equipment of multiple pressure regulator diaphragm.
Description of the drawings:
Fig. 1 is a schematic structural view of a durability detection device for a gas pressure regulator membrane according to the present invention.
The specific embodiment is as follows:
the preferred embodiments of the present invention will be described in detail below with reference to the attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention. The directional terms referred to in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer only to the directions of the attached drawings. Accordingly, directional terminology is used to describe and understand the invention and is not limiting of the invention.
As shown in fig. 1, a durability detecting device for a diaphragm of a gas pressure regulator includes a frame 1, a positioning assembly for clamping a diaphragm 6, and a vibration assembly for driving the diaphragm 6 to vibrate.
The positioning component is fixed on one side of the top end of the frame 1 and comprises an air pump, a plenum chamber 4, a pressure gauge 5 and a membrane clamping disc 7, the air pump is connected with the plenum chamber through an oil-water separator, the plenum chamber 4 is of a cylindrical hollow structure, one end of the plenum chamber 4 is provided with an opening, the size of the opening corresponds to that of the membrane 6, the position of the air pump is installed according to actual situations on site and can be arranged in the frame 1, the pressure gauge 5 is arranged on the top end of the plenum chamber 4 and is communicated with an inner cavity of the plenum chamber 4, the membrane clamping disc 7 is correspondingly arranged at the opening end of the inner cavity of the plenum chamber 4, a through hole is formed in the center of the membrane clamping disc 7, and the membrane clamping disc 7 can cover the membrane 6 at the opening end of the inner cavity of the plenum chamber 4. The membrane clamping disc 7 is in a circular shape, and the edge of the membrane clamping disc can press the membrane 6 on the opening end of the plenum chamber 4, and the membrane 6 seals the plenum chamber 4, so that sealing connection is realized. Since the diaphragm 6 vibrates left and right, the actual vibration surface is the center part, and the vibration amplitude is not large, in order to prevent the diaphragm clamping disk 7 from acting or reacting to the vibration surface, the center of the diaphragm clamping disk 7 is provided with a through hole, the diameter of the through hole is as large as possible, but the sealing performance cannot be affected, the edge of the diaphragm clamping disk 7 fixes the edge of the diaphragm 6, and the diaphragm 6 can bulge out of the through hole.
The outer end of the plenum chamber 4 is detachably connected with a flange plate 21, and the membrane clamping plate 7 can cover the membrane 6 on the flange plate 21, namely, the membrane clamping plate 7 can fix the edge of the membrane 6 on the flange plate 21. The flange 21 of a corresponding size can be replaced according to the different sizes of the diaphragms 6, so that the diaphragm 6 can be suitable for various types.
The vibration assembly is fixed on one side of the top end of the frame 1, which is far away from the positioning assembly, and comprises a driving mechanism and a connecting rod mechanism, one end of the connecting rod mechanism is fixedly connected with the driving mechanism, the other end of the connecting rod mechanism is fixedly connected with the center of the diaphragm 6, and the driving mechanism can drive the center of the diaphragm 6 to reciprocate along the horizontal direction through the connecting rod mechanism.
The driving mechanism comprises a driving motor 19, a belt pulley, a gearbox 13 and a movement turntable 12, wherein the driving motor 19 is connected with the gearbox 13 through the belt pulley, the gearbox 13 is connected with the link mechanism through the movement turntable 12, and the driving motor 19 drives the movement turntable 12 to rotate through the belt pulley and the gearbox 13 so as to enable the link mechanism to reciprocate.
The connecting rod mechanism comprises a pushing connecting rod 11 and a horizontal connecting rod 8, one end of the pushing connecting rod 11 is movably connected with one end of the horizontal connecting rod 8 through a universal joint 10, the other end of the pushing connecting rod 11, which is far away from the universal joint 10, is fixedly connected with one end of a movement turntable 12, the other end of the horizontal connecting rod 8, which is far away from the universal joint 10, is fixedly connected with the center of the diaphragm 6 through a fixed disc, and the movement turntable 12 drives the horizontal connecting rod 8 to reciprocate along the horizontal direction through the pushing connecting rod 11. The bottom end of the horizontal connecting rod 8 is provided with a fixer 9 for supporting the horizontal connecting rod 8, the fixer 9 is provided with a through hole, and the horizontal connecting rod 8 passes through the through hole and can freely slide along the through hole, so that the fixer 9 limits the movement of the horizontal connecting rod 8 and ensures that the horizontal connecting rod 8 moves linearly. Specifically, the fixing device 9 comprises an upper fixing block and a lower fixing block which are detachably connected, so that the installation is convenient.
The invention also comprises a counter 14, wherein the counter 14 is connected with the movement turntable 12, and the movement data is recorded through the ingenious matching of the counter 14 and the movement turntable 12.
It should be noted that, the driving motor 19, the belt pulley, the gearbox 13, and the like of the present invention may be replaced by a cylinder, an oil cylinder, and the like; the membrane 6 may also have a rectangular, triangular, oval or the like shape, so that the membrane clamping disc 7, the plenum 4 may also take a shape corresponding thereto.
The working principle of the invention is as follows:
Placing the tested membrane 6 on a membrane test plenum chamber 4 fixed on the table top of the machine frame 1, clamping the membrane 6 and the membrane test plenum chamber 4 through a membrane clamping disc 7, opening an inflation switch 2 to introduce compressed air, driving the compressed air into the membrane test plenum chamber 4 through an air inlet ball valve 3, setting a test pressure value of the membrane test plenum chamber through a pressure gauge 5, checking whether gas leaks at the clamping position of the tested membrane 6 or not, if no gas leaks, opening a power control switch 17, adjusting proper amplitude according to the shape, the size and the material of the membrane 6, driving a driving motor 19 to drive a driving belt pulley 14 to rotate through a driving belt pulley 18, driving the driving belt pulley 14 to drive a movement turntable 12 to rotate through the speed reduction of a gearbox 13, the edge of the movement turntable 12 drives the pushing connecting rod 11 to move through the movable bolt, the pushing connecting rod 11 is connected with the horizontal connecting rod 8 through the universal joint 10, the horizontal connecting rod 8 is fixedly guided by the fixer 9, when the movement turntable 12 rotates, the pushing connecting rod 11 drives the horizontal connecting rod 10 to continuously do horizontal movement through the universal joint 10, the horizontal connecting rod 10 drives the diaphragm 6 to move, the diaphragm 6 overcomes the pressure in the diaphragm test plenum chamber 4, the working condition pressure of the analog voltage regulator continuously moves, the movement times can be recorded through the counter 15, meanwhile, the test data can be recorded and analyzed through the computer 16, the machine can meet the diaphragm movement requirement of continuously performing tens of thousands times, and the purpose of the diaphragm durability test is achieved.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (3)
1. A durability detection device for gas pressure regulator diaphragm, its characterized in that: the device comprises a frame, a positioning assembly for clamping the diaphragm and a vibration assembly for driving the diaphragm to vibrate;
The positioning component is fixed at one side of the top end of the rack and comprises an air pump, a plenum chamber, a pressure gauge and a membrane clamping disc, the plenum chamber is connected with the air pump, the pressure gauge is arranged at the top end of the plenum chamber and is communicated with the inner cavity of the plenum chamber, the membrane clamping disc is correspondingly arranged at the opening end of the inner cavity of the plenum chamber, the center of the membrane clamping disc is provided with a through hole, and the membrane clamping disc can cover the membrane at the opening end of the inner cavity of the plenum chamber;
The vibration assembly is fixed at one side of the top end of the frame far away from the positioning assembly and comprises a driving mechanism and a connecting rod mechanism, one end of the connecting rod mechanism is fixedly connected with the driving mechanism, the other end of the connecting rod mechanism is fixedly connected with the center of the diaphragm, and the driving mechanism can drive the center of the diaphragm to reciprocate along the horizontal direction through the connecting rod mechanism;
The driving mechanism comprises a driving motor, a belt pulley, a gearbox and a movement turntable, wherein the driving motor is connected with the gearbox through the belt pulley, the gearbox is connected with the connecting rod mechanism through the movement turntable, and the driving motor drives the movement turntable to rotate through the belt pulley and the gearbox so as to enable the connecting rod mechanism to reciprocate;
The connecting rod mechanism comprises a pushing connecting rod and a horizontal connecting rod, one end of the pushing connecting rod is movably connected with one end of the horizontal connecting rod through a universal joint, the other end of the pushing connecting rod, which is far away from the universal joint, is fixedly connected with one end of a movement turntable, the other end of the horizontal connecting rod, which is far away from the universal joint, is fixedly connected with the center of a diaphragm, and the movement turntable drives the horizontal connecting rod to reciprocate along the horizontal direction through the pushing connecting rod;
the bottom end of the horizontal connecting rod is provided with a fixer for supporting the horizontal connecting rod;
the outer end of the inflating chamber is detachably connected with a flange plate, and the diaphragm clamping plate can cover the diaphragm on the flange plate.
2. The durability detection apparatus for a gas pressure regulator membrane according to claim 1, wherein: the device also comprises a counter, and the counter is connected with the movement turntable.
3. The durability detection apparatus for a gas pressure regulator membrane according to claim 1, wherein: the air pump is connected with the plenum chamber through the oil-water separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810498887.XA CN108489726B (en) | 2018-05-23 | 2018-05-23 | Durability detection device for gas pressure regulator membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810498887.XA CN108489726B (en) | 2018-05-23 | 2018-05-23 | Durability detection device for gas pressure regulator membrane |
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| CN108489726A CN108489726A (en) | 2018-09-04 |
| CN108489726B true CN108489726B (en) | 2024-05-17 |
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| CN201810498887.XA Active CN108489726B (en) | 2018-05-23 | 2018-05-23 | Durability detection device for gas pressure regulator membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109268634B (en) * | 2018-11-19 | 2024-04-30 | 苏州市职业大学 | Self-adaptive gas pressure regulator support frame |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727729Y (en) * | 2004-03-19 | 2005-09-21 | 株洲时代新材料科技股份有限公司 | Automobile air spring fatigue-testing machine |
| CN200965490Y (en) * | 2006-06-16 | 2007-10-24 | 株洲时代新材料科技股份有限公司 | Mechanical rubber ball hinge fatigue tester |
| CN101419147A (en) * | 2008-11-30 | 2009-04-29 | 青岛大学 | Rubber diaphragm antifatigue test device |
| CN201331465Y (en) * | 2008-11-30 | 2009-10-21 | 青岛泰能鲁尔新技术有限公司 | Pressure-proof detector for rubber-based rolling membrane |
| CN102156030A (en) * | 2011-01-20 | 2011-08-17 | 航天晨光股份有限公司 | External-pressure fatigue test equipment for corrugated pipe |
| CN202442864U (en) * | 2012-02-20 | 2012-09-19 | 郑州郑燃调压控制技术有限公司 | Diaphragm testing machine for fuel gas pressure regulator |
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN107389481A (en) * | 2017-08-02 | 2017-11-24 | 中国地震局工程力学研究所 | Fatigue tester |
| CN208223795U (en) * | 2018-05-23 | 2018-12-11 | 江苏科信燃气设备有限公司 | Durability detection device for gas pressure regulator, governor diaphragm |
-
2018
- 2018-05-23 CN CN201810498887.XA patent/CN108489726B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727729Y (en) * | 2004-03-19 | 2005-09-21 | 株洲时代新材料科技股份有限公司 | Automobile air spring fatigue-testing machine |
| CN200965490Y (en) * | 2006-06-16 | 2007-10-24 | 株洲时代新材料科技股份有限公司 | Mechanical rubber ball hinge fatigue tester |
| CN101419147A (en) * | 2008-11-30 | 2009-04-29 | 青岛大学 | Rubber diaphragm antifatigue test device |
| CN201331465Y (en) * | 2008-11-30 | 2009-10-21 | 青岛泰能鲁尔新技术有限公司 | Pressure-proof detector for rubber-based rolling membrane |
| CN102156030A (en) * | 2011-01-20 | 2011-08-17 | 航天晨光股份有限公司 | External-pressure fatigue test equipment for corrugated pipe |
| CN202442864U (en) * | 2012-02-20 | 2012-09-19 | 郑州郑燃调压控制技术有限公司 | Diaphragm testing machine for fuel gas pressure regulator |
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN107389481A (en) * | 2017-08-02 | 2017-11-24 | 中国地震局工程力学研究所 | Fatigue tester |
| CN208223795U (en) * | 2018-05-23 | 2018-12-11 | 江苏科信燃气设备有限公司 | Durability detection device for gas pressure regulator, governor diaphragm |
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