CN106443030B - Gas cylinder automatictesting system - Google Patents
Gas cylinder automatictesting system Download PDFInfo
- Publication number
- CN106443030B CN106443030B CN201610850235.9A CN201610850235A CN106443030B CN 106443030 B CN106443030 B CN 106443030B CN 201610850235 A CN201610850235 A CN 201610850235A CN 106443030 B CN106443030 B CN 106443030B
- Authority
- CN
- China
- Prior art keywords
- water
- pressure
- gas cylinder
- tank
- way
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of gas cylinder automatictesting system, including recovery tank, measurement water tank, cyclic water tank, tested gas cylinder, the water pressure test loop for adjusting pipeline hydraulic pressure, the gas pressure test loop of regulation pipeline air pressure, four-way, controller；The tested gas cylinder is arranged in recovery tank by support, and bottle portion submerges in recovery tank and opening up, recovery tank and cyclic water tank, and water circulating pump is provided between the two；The four-way connects gas pressure test loop, water pressure test loop, relief pipeline and high pressure filter respectively.The integration capability of the present invention is strong, the achievable pressure vessel air seal test of the present invention, strength test, explosion bulge test, the automation of residual deformation measurement, and experimental result is more accurate.Automaticity is high, and supercharging, pressurize, ftercompction, pressure release from the volumetric measurement of container to system etc. can be automatically performed, without manual operation, securely and reliably.
Description
Technical field
The present invention relates to a kind of gas cylinder measuring system, more particularly to a kind of gas cylinder automatictesting system.
Background technology
Be both needed to during production of pressure container carry out air seal test, strength test, explosion bulge test, residual deformation measurement and
Fatigue life test etc..Traditional experimental system, valve use control manually, high-pressure pump is adopted for hand increasing pressure pump, pressure data
Shown with mechanical pressure gauge and measured by artificial interpretation, liquid charge and discharge by graduated cylinder with a scale, the measuring precision is not high, number
It is cumbersome inefficient according to poor reliability, experiment process.
The content of the invention
The purpose of the present invention is that providing one kind solves the above problems, and efficiency high, safety, labor intensity are low, are easy to letter
The gas cylinder automatictesting system of breathization management.
To achieve these goals, the technical solution adopted by the present invention is such：A kind of gas cylinder automatictesting system,
Including recovery tank, measurement water tank, cyclic water tank, tested gas cylinder, the water pressure test loop for adjusting pipeline hydraulic pressure, regulation pipeline air pressure
Gas pressure test loop, four-way, controller；
The tested gas cylinder is arranged in recovery tank by support, and bottle portion submerges in recovery tank and opening up, returns
Water tank and cyclic water tank, and water circulating pump is provided between the two；
The four-way connects gas pressure test loop, water pressure test loop, relief pipeline and high pressure filter respectively,
Wherein：The water pressure test loop includes a main water route, Zhi Shuilu, water supply tank, the increasing that can adjust pipeline reclaimed water pressure
Press unit, the main water route one termination measurement water tank, a termination four-way, main water route is provided with K4 and V2, wherein V2 close to four-way,
Zhi Shuilu one end connects main water route and between K4 and V2, and other end connection water supply tank, compress cell includes two output pipes,
A wherein output pipe connects main water route close to one end of measurement water tank through K9, another output pipe through K6 connected components water route, and
On Zhi Shuilu between the output pipe and water supply tank, provided with K3；
V3 is provided between the gas pressure test loop and four-way, relief pipeline is provided with K5 and V4, and wherein K5 is high close to four-way
Press through the joint that one end connection one of the filter away from four-way can connect with gas cylinder opening；
Wherein, V2, V3, V4 are high pressure hand-operated needle-valve, and K3, K4, K5, K6, K9 are high pressure air governor valve, high pressure air governor valve with
Controller is connected.
As preferred：Also include a bulking system, the bulking system includes a water injecting tank, water injecting tank bottom is provided with one
Two filling pipes are provided between the water filling port of tested gas cylinder water filling, the water injecting tank and water filling port, are set respectively on two filling pipes
There are big flow electrically-controlled valve K1 and low discharge electrically-controlled valve K2, the laser displacement sensing for detecting its inside liquid level is provided with above water injecting tank
Device, tested gas cylinder is interior to be provided with colored bead, is tested gas cylinder opening side and is provided with the photoelectric sensor for monitoring colored bead, flow
Electrically-controlled valve K1, low discharge electrically-controlled valve K2, laser displacement sensor, photoelectric sensor are connected with controller, the controller root
Big flow electrically-controlled valve K1 and low discharge electrically-controlled valve K2 folding is controlled according to the data of photo-sensor feedback.
As preferred：Also include a video monitor being connected with controller, the tested gas cylinder of video monitor monitoring
State.
As preferred：Also include a room, the room is divided into operating room and test equipment room, operation is provided with operating room
Platform, controller are arranged on operating desk, and remaining equipment is arranged in test equipment room.
As preferred：The compress cell is the booster pump that can adjust pressure.
As preferred：On main water route between Zhi Shuilu and V2, provided with pressure sensor, the pipe between air pressure experimental loop and V3
Lu Shang, it also is provided with pressure sensor.
Compared with prior art, the advantage of the invention is that：
1st, integration capability is strong, the achievable pressure vessel air seal test of the present invention, strength test, explosion bulge test, residual deformation
The automation of measurement, and experimental result is more accurate.
2nd, automaticity is high, and supercharging, pressurize, ftercompction, pressure release from the volumetric measurement of container to system etc. can be automatic
Complete, without manual operation.
3rd, the level of informatization is high, experimental data can dynamic acquisition, display and store, realize the total digitalization note of data
Record.
4th, measurement accuracy is high, and system is not less than 0.1%FS to the measurement accuracy of hydraulic pressure, air pressure.
5th, it is safe and reliable, experimental facilities and operating desk are separated, while reducing labor intensity, improve efficiency, increased
Strong security.
Brief description of the drawings
Fig. 1 is set for the present invention to scheme；
Fig. 2 is circuit theory diagrams of the present invention；
Fig. 3 is bulking system schematic diagram；
Fig. 4 is gas pressure test circuit theory figure.
In figure：1st, four-way；2nd, high pressure filter；3rd, joint；4th, water circulating pump；5th, it is tested gas cylinder；6th, main water route；7th, Zhi Shui
Road；8th, colored bead；9th, water injecting tank；10th, video monitor.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1：Referring to Fig. 1 to Fig. 4, a kind of gas cylinder automatictesting system, including recovery tank, measurement water tank, circulation
Water tank, tested gas cylinder 5, adjust the water pressure test loop of pipeline hydraulic pressure, the gas pressure test loop for adjusting pipeline air pressure, four-way 1, control
Device processed；
The tested gas cylinder 5 is arranged in recovery tank by support, and bottle portion submerges in recovery tank and opening up, returns
Water tank and cyclic water tank, and water circulating pump 4 is provided between the two；
The four-way 1 connects gas pressure test loop, water pressure test loop, relief pipeline and high pressure filter 2 respectively,
Wherein：The water pressure test loop includes a main water route 6, Zhi Shuilu 7, water supply tank, can adjust pipeline reclaimed water pressure
Compress cell, the main termination of the water route 6 one measurement water tank, a termination four-way 1, main water route 6 are provided with K4 and V2, and wherein V2 is close
Four-way 1, the one end of Zhi Shuilu 7 connect main water route 6 and between K4 and V2, and other end connection water supply tank, compress cell includes two
Output pipe, connected wherein an output pipe connects main water route 6 through K9 close to one end of measurement water tank, another output pipe through K6
Zhi Shuilu 7, and on the Zhi Shuilu 7 between the output pipe and water supply tank, provided with K3；
Be provided with V3 between the gas pressure test loop and four-way 1, relief pipeline is provided with K5 and V4, wherein K5 close to four-way 1,
The joint 3 that one end connection one of the high pressure filter 2 away from four-way 1 can connect with gas cylinder opening；
Wherein, V1, V2, V3, V4 are high pressure hand-operated needle-valve, K3, K4, K5, K6, are high pressure air governor valve, high pressure air governor valve is equal
It is connected with controller.
In the present embodiment：Also include a bulking system, the bulking system includes a water injecting tank 9, the bottom of water injecting tank 9 is provided with
One is provided with two filling pipes to be tested between the water filling port of the water filling of gas cylinder 5, the water injecting tank 9 and water filling port, on two filling pipes
Big flow electrically-controlled valve K1 and low discharge electrically-controlled valve K2 are respectively equipped with, the top of water injecting tank 9 is provided with the laser position for detecting its inside liquid level
Displacement sensor, tested gas cylinder 5 is interior to be provided with colored bead 8, is tested the opening side of gas cylinder 5 and is provided with the photoelectricity for monitoring colored bead 8
Sensor, flow electrically-controlled valve K1, low discharge electrically-controlled valve K2, laser displacement sensor, photoelectric sensor are connected with controller, institute
State the folding that controller controls big flow electrically-controlled valve K1 and low discharge electrically-controlled valve K2 according to the data of photo-sensor feedback；
In the present embodiment, in addition to a video monitor 10 being connected with controller, the video monitor 10 monitor quilt
Survey the state of gas cylinder 5；
In addition, in the present embodiment, in addition to a room, the room is divided into operating room and test equipment room, in operating room
Provided with operating desk, controller is arranged on operating desk, and remaining equipment is arranged in test equipment room.
In the present invention, system global structure such as Fig. 1, the present invention it is airtight can to carry out pressure vessel on the basis of the system
Experiment, strength test, explosion bulge test, residual deformation measurement experiment etc..
Such as：V2 is closed, opens V3, gas pressure test loop connects with gas cylinder, can carry out air pressure experiment；V3 is closed, opens V2；Water
Press test loop and gas cylinder；Connection, can carry out hydrostatic test；Magnetic valve K3, K4 are opened：The exhaust of hydrostatic test pipeline can be achieved.
The method tested using apparatus of the present invention is as follows：
1st, original volume Vo is measured
The indirect method of measurement (filling measurement method)：Referring to Fig. 3, it is tested gas cylinder 5 and is positioned using special tooling, opening upwards.Note
The filling speed of the bottom of water tank 9 sets big flow electrically-controlled valve and each one of low discharge electrically-controlled valve.Big flow electrically-controlled valve is first used by gas
Bottle is poured water to 90%, and remaining water is slowly filled using low discharge electrically-controlled valve.Effect of flood measurement accuracy during in order to prevent that water from filling,
When low discharge electrically-controlled valve terminates if being poured water, system setting is a set of to fill detection sensing device.Namely it is mentioned above：Video
Monitoring+colored bead 8, when gas cylinder fills water, colored hollow beads expose bottleneck, and reflective photoelectric sensor opened point connects
Logical, linkage low discharge electrically-controlled valve is closed.Gas cylinder volume is then pressed：Vo=△ H*A are calculated.
Wherein, △ H are the difference in height that liquid level declines in water injecting tank 9, and A is the floor space of water injecting tank 9.
2nd, volume Vk measuring methods after volume Vm and pressure release after pressurizeing
Measurement herein need to open water pressure test loop and close air pressure experimental loop.
(1) the water compensating valve K3 and relief valve K5 in system diagram are opened, allows pipeline water-filling to be vented, and dock gas cylinder；
(2) water compensating valve K3 and relief valve K5 is closed；
(3) the plunger set of booster pump is adjusted：0.2MPa → 0.4MPa → 0.6MPa → 0.8MPa → 1.0MPa → 0MPa,
Wait the plunger of booster pump to rest on the top position (by nature pressure difference or starting centrifugal pump pressurization), and record measurement water tank
Level value H1；
(4) seal tightness test pressurization can be carried out herein：0MPa → 9.81MPa, pressurize 3min, K4 pressure releases are opened to 0MPa；
(5) staged that makes a strength test again is pressurizeed：0MPa→1.0MPa→2.0MPa→……→33.0MPa→
33.2MPa → 33.4MPa → 33.6MPa → 33.8MPa → 34.0MPa → 34.2MPa → 34.32MPa, pressurize 10min；
(6) dwell time arrives, shutoff valve K6, K9, and records the level value H2 of measurement water tank；
(7) pressure release：Valve K4 is opened, gas cylinder bounces back pressure release to 0MPa, waits gas cylinder retraction, withdrawal duration arrives, record measurement
The level value H3 of water tank；
(8) plunger return：0.2MPa → 0.4MPa → 0.6MPa → 0.8MPa → 1.0MPa → 0MPa, waits booster pump
Plunger rests on the top position (by nature pressure difference or starting centrifugal pump pressurization), and records the level value H4 of measurement water tank；
Calculate volume Vm after gas cylinder pressurizes：
Vm=original volumes+water decrement built in water tank output water+pump
=Vo+ (H2-H1) * S+ (H4-H3) * S
=Vo+ (H2+H4-H1-H3) * S S are measurement tank cross-sectional product；Volume Vk when calculating gas cylinder pressure release：
The water of volume-gas cylinder retraction discharge after Vk=pressurizations
=Vm- (H2-H3) * S
=Vo+ (H4-H1) * S S are measurement tank cross-sectional product；
3rd, gas cylinder remnants volumes calculate automatically
Calculate gas cylinder remaining deformation：△=(Vk-Vo)/(Vm-Vo-Wa).
Claims (5)
- A kind of 1. gas cylinder automatictesting system, it is characterised in that：Including recovery tank, measurement water tank, cyclic water tank, tested gas Bottle, the water pressure test loop of regulation pipeline hydraulic pressure, gas pressure test loop, four-way and the controller of regulation pipeline air pressure；The tested gas cylinder is arranged in recovery tank by support, and bottle portion submerges in recovery tank and opening up, recovery tank Water circulating pump is provided between cyclic water tank；The four-way connects gas pressure test loop, water pressure test loop, relief pipeline and high pressure filter respectively,Wherein：The water pressure test loop includes a main water route, Zhi Shuilu, water supply tank and the supercharging list that can adjust pipeline reclaimed water pressure Member, the main termination of the water route one measurement water tank, a termination four-way, main water route are provided with K4 and V2, and wherein V2 is close to four-way, Zhi Shui Road one end connects main water route and between K4 and V2, and other end connection water supply tank, compress cell includes two output pipes, wherein One output pipe connects main water route close to one end of measurement water tank through K9, and another output pipe is through K6 connected components water route, and this is defeated Go out on the Zhi Shuilu between pipeline and water supply tank, provided with K3；V3 is provided between the gas pressure test loop and four-way, relief pipeline is provided with K5 and V4, and wherein K5 presses through close to four-way, height The joint that one end connection one of the filter away from four-way can connect with gas cylinder opening；Wherein, V2, V3, V4 are high pressure hand-operated needle-valve, and K3, K4, K5, K6, K9 are high pressure air governor valve, high pressure air governor valve with control Device processed is connected；Also include a bulking system, the bulking system includes a water injecting tank, and water injecting tank bottom is provided with one as tested gas cylinder water filling Water filling port, two filling pipes are provided between the water injecting tank and water filling port, it is automatically controlled to be respectively equipped with big flow on two filling pipes Valve K1 and low discharge electrically-controlled valve K2, water injecting tank top are provided with the laser displacement sensor for detecting its inside liquid level, are tested in gas cylinder Provided with colored bead, it is tested gas cylinder opening side and is provided with the photoelectric sensor for monitoring colored bead, flow electrically-controlled valve K1, rill Amount electrically-controlled valve K2, laser displacement sensor and photoelectric sensor are connected with controller, and the controller is according to photoelectric sensor The data control big flow electrically-controlled valve K1 and low discharge electrically-controlled valve K2 of feedback folding.
- 2. gas cylinder automatictesting system according to claim 1, it is characterised in that：Also it is connected including one with controller Video monitor, the tested state of air cylinders of video monitor monitoring.
- 3. gas cylinder automatictesting system according to claim 1, it is characterised in that：Also include a room, the room It is divided into operating room and test equipment room, is provided with operating desk in operating room, controller is arranged on operating desk, and remaining equipment is arranged on In test equipment room.
- 4. gas cylinder automatictesting system according to claim 1, it is characterised in that：The compress cell is that can adjust pressure The booster pump of power.
- 5. gas cylinder automatictesting system according to claim 1, it is characterised in that：Main water route between Zhi Shuilu and V2 On, provided with pressure sensor, on the pipeline between air pressure experimental loop and V3, it also is provided with pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850235.9A CN106443030B (en) | 2016-09-26 | 2016-09-26 | Gas cylinder automatictesting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850235.9A CN106443030B (en) | 2016-09-26 | 2016-09-26 | Gas cylinder automatictesting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106443030A CN106443030A (en) | 2017-02-22 |
| CN106443030B true CN106443030B (en) | 2018-02-06 |
Family
ID=58169439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850235.9A Active CN106443030B (en) | 2016-09-26 | 2016-09-26 | Gas cylinder automatictesting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106443030B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389463B (en) * | 2017-08-23 | 2023-03-24 | 江苏电子信息职业学院 | Water recycling system for water pressure detection of gas cylinder |
| CN108225952A (en) * | 2017-12-01 | 2018-06-29 | 杭州东贝机电设备有限公司 | Gas cylinder fatigue tester |
| CN109387437A (en) * | 2018-11-23 | 2019-02-26 | 丹阳市飞轮气体阀门有限公司 | A kind of full-automatic high-pressure hydrogen cylinder hydrogen cyclic test system and test method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345458A (en) * | 1980-07-19 | 1982-08-24 | Meiko Industry Corporation, Limited | Water tank assembly for a pressure resistance measuring apparatus for testing containers |
| CN201876390U (en) * | 2010-11-11 | 2011-06-22 | 无锡昌华机电制造有限公司 | Automatic control system for water pressure test of cylinder in water jacket method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607341A (en) * | 1983-06-28 | 1985-01-16 | Yokohama Rubber Co Ltd:The | Water-pressure testing method for pneumatic fender |
-
2016
- 2016-09-26 CN CN201610850235.9A patent/CN106443030B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345458A (en) * | 1980-07-19 | 1982-08-24 | Meiko Industry Corporation, Limited | Water tank assembly for a pressure resistance measuring apparatus for testing containers |
| CN201876390U (en) * | 2010-11-11 | 2011-06-22 | 无锡昌华机电制造有限公司 | Automatic control system for water pressure test of cylinder in water jacket method |
Non-Patent Citations (1)
| Title |
|---|
| 一种新型气瓶气压试验设备;朴丕龙等;《工程机械文摘》;20090331;第36至38页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106443030A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107290222B (en) | Rock triaxial test equipment and method | |
| CN106443030B (en) | Gas cylinder automatictesting system | |
| CN104596905B (en) | Device and method for measuring permeability of rock in fracturing process | |
| CN105004616B (en) | The many performance test apparatus of low-temperature (low temperature) vessel and test method | |
| WO2021208837A1 (en) | Ultra-large horizontal permeability test system having intelligent multi-stage loading function and variable seepage path | |
| CN106814016A (en) | The analogy method of slurry filling imitation device | |
| CN106840977A (en) | Slurry filling imitation device | |
| CN106644428A (en) | Test method and apparatus for deep sea activity assembly | |
| CN101629887A (en) | Hydraulic testing machine and testing method of pressure gas cylinder | |
| CN106706500A (en) | Device for determining permeability of concrete | |
| CN103033426B (en) | A kind of pulse detection system and method for testing | |
| CN206459818U (en) | The test device of deep-sea movable component | |
| CN112763338A (en) | High-pressure hydraulic multipurpose test device | |
| CN103123311B (en) | Device used for detecting pressure resistance of ceramic tube | |
| CN108195527A (en) | Used in nuclear power station high density polyethylene pipe tightness is tested and evaluation method | |
| CN206695875U (en) | A kind of apparatus for calibrating water meter | |
| CN207866635U (en) | A kind of underwater equipment pressure-resistant seal performance test device | |
| CN206339442U (en) | Hydraulic pressure intelligently loads detection means | |
| CN203130061U (en) | Device for stimulating test of improving coal bed methane recovery efficiency by feeding carbon dioxide | |
| CN210774561U (en) | Dynamic pressure water tightness test device for sensor under all working conditions | |
| CN211292236U (en) | Gas hydrate-containing coal body preparation device and mechanical property testing system | |
| CN207472733U (en) | A kind of permeable compression testing device of porous material | |
| CN112763162A (en) | Acetylene propane hydraulic pressure test equipment and production process thereof | |
| CN205246474U (en) | A test device for testing coalbed gas absorption desorption rule under loading condition | |
| CN218381592U (en) | Portable low-temperature safety valve check table supercharger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 610199 Sichuan Chengdu economic and Technological Development Zone (Longquanyi District) 189 Patentee after: Sichuan spaceflight Long March Equipment Manufacturing Co., Ltd. Address before: 610000 No. 189, Yi Du Avenue, Longquanyi District, Chengdu City, Chengdu, Sichuan. Patentee before: Changzheng Machinery Factory, China Astronautics Science and Technology Group Co |
|
| CP03 | Change of name, title or address |