CN105403288B - A kind of gas pipeline hydrops monitoring system and its monitoring method - Google Patents
A kind of gas pipeline hydrops monitoring system and its monitoring method Download PDFInfo
- Publication number
- CN105403288B CN105403288B CN201510909087.9A CN201510909087A CN105403288B CN 105403288 B CN105403288 B CN 105403288B CN 201510909087 A CN201510909087 A CN 201510909087A CN 105403288 B CN105403288 B CN 105403288B
- Authority
- CN
- China
- Prior art keywords
- gas
- pipeline
- gas concentration
- audio signal
- audio
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of gas pipeline hydrops monitoring system and its monitoring methods.A kind of gas pipeline hydrops monitoring system, including：Gas detector, gas detector include the gas sensitive device sensitive to specific gas, and gas sensitive device generates detection signal when detecting specific gas；Hydrops detection device, including：Acoustical generator is arranged on the tube wall of gas pipeline side, for emitting sound wave to tube wall；The tube wall of the pipeline other side is equipped with audio detection device；Tone leading body is additionally provided in the gas pipeline, the both ends of the tone leading body are separately connected the acoustical generator and audio detection device；Communication device is connected to the gas detector and audio detection device, and the gas signal detected and audio signal are transmitted to monitoring center.For the present invention without changing existing pipeline structure, no medium leakage risk does not influence the operations such as pipeline pigging.
Description
Technical field
The invention belongs to level gauging field, a kind of system measured to liquid level in closed container and side are related generally to
Method more particularly to a kind of gas pipeline hydrops monitoring system and its monitoring method.
Background technology
Natural gas line will produce hydrops under certain condition, and hydrops occupies a part of pipeline section, reduces gas
Effectively conveying sectional area causes the defeated efficiency of pipe to reduce, it is also possible to hydrate can be formed under the conditions of certain temperature, causes ice stifled
Accident.For the gas gathering line of high sulfur-bearing and carbon dioxide, the presence of hydrops can also accelerate pipeline corrosion, and pipeline is caused to wear
Hole causes leakage, even results in intoxication accident.Regular pigging is the method for reducing the effective and generally use of hydrops in pipe, and
Determine scraper-running frequency and formulate pigging scheme, need to know hydrops in pipe number, that is, need to measure pipe inner product liquid measure.
Chinese invention patent CN1155809C discloses a kind of using gamma ray measurement pipeline hydrops amount technology.Ray
Method is disadvantageous in that：Ray is decayed acutely in steel tube wall, is needed to pipeline trepanning to arrange radiographic source storehouse, cannot be right
The gathering line hydrops amount built up carries out non-intervention type detection, in addition, there is also radiation risks for such method.
Ultrasonic wave is widely used in the detection of the closed vessel liquid levels such as storage tank, the work of conventional ultrasound liquid level level measuring method
Principle is to use time difference method, sends out ultrasonic wave by ultrasonic wave transmitting probe, propagates in the medium, is encountered anti-after gas-liquid interface
It penetrates, reflection echo is received by receiving transducer.Its propagation is calculated using ultrasonic wave propagation time in the medium and ultrasonic velocity
Distance, to obtain liquid level.When in container temperature, pressure change or container in liquid phase media components change when,
The velocity of sound will also change, it is difficult to ensure that liquid level measurement precision.
Chinese invention patent 100434906C discloses a kind of formal ultrasonic wave liquid level measuring apparatus of self-correcting, to carry out the velocity of sound
Correction needs to install a fixation reflex ring inside tested container, not non-invasive measurement method truly.
Natural gas line pressure is high, pumped (conveying) medium is inflammable and explosive, and high sulfur-containing natural gas also has severe toxicity, to ensure safety, Du
Exhausted dielectric leakage hidden danger, it is desirable that the hydrops measurement method of use cannot change existing pipeline architecture, can only be carried out in pipe outer wall non-
Invasive measurement.
In conclusion existing pipeline hydrops measuring technique, usually invasive measurement method, needs to carry out existing pipeline
Transformation cannot be satisfied the needs for the natural gas line hydrops detection being currently running.
Invention content
In view of the above-mentioned drawbacks of the prior art and insufficient, it is an object of the invention to propose a kind of non-intervention type pipeline
Hydrops monitors system and method, is not necessarily to speed of sound correction, is not influenced by gas-liquid phase component in pipeline and temperature, pressure and other parameters,
And do not change existing pipeline structure, you can realize the quick measurement to hydrops height in pipe.
In order to achieve the above technical purposes, the present invention is using technical solution in detail below：
A kind of gas pipeline hydrops monitoring system, including：
Gas sensor is installed in gas pipeline, for detecting gas concentration in gas pipeline, generates gas concentration letter
Number and send；
Acoustical generator is arranged on the tube wall of gas pipeline side, for emitting sound wave to tube wall；The tube wall of the pipeline other side
It is equipped with audio detection device, the audio detection device is used to receive the sound that the acoustical generator is sent out and is translated into sound
Frequency signal；
Communication device, for receiving real gas concentration signal and actual audio signal, and by real gas concentration signal
It is transmitted to monitoring center with actual audio signal；
Monitoring center, the monitoring center is interior to have gas concentration signal preset value and audio signal preset value；
Monitoring center obtains the real gas concentration signal and actual audio signal that communication device is sent, and real gas is dense
Degree signal is compared with gas concentration preset value；
Actual audio signal is compared with audio signal preset value；
When judging inconsistent the real gas concentration signal and gas concentration preset value or actual audio signal and sound
Frequency signal preset value is inconsistent, then sends out alarm；
Tone leading body is additionally provided in the gas pipeline, the both ends of the tone leading body are separately connected the acoustical generator and audio inspection
Survey device.
The acoustical generator is arranged in gas pipeline on the corresponding pipeline outer wall in low-lying place for generating hydrops.
The tone leading body is sound guide tube or leading note stick.
The acoustical generator position fixed frequency acoustical generator.
A kind of gas pipeline monitoring method is monitored using the gas pipeline hydrops monitoring system；This method packet
Include following steps：
Step 1: gas concentration monitoring information table and the audio detection are stored and are arranged in monitoring center in advance
The audio-frequency information table that device detects；
Record has gas concentration preset value in the gas concentration monitoring information table；
Record has the audio detection device when gas pipeline inner product liquid measure allows maximum value to detect in the audio-frequency information table
The audio signal preset value arrived；
Step 2: monitoring center obtains the real gas concentration signal and actual audio signal that communication device is sent, it will be real
Border gas concentration signal is compared with the gas concentration preset value recorded in gas concentration monitoring information table；
Actual audio signal is compared with the audio signal preset value recorded in audio-frequency information table；
When judging inconsistent the real gas concentration signal and gas concentration preset value or actual audio signal and sound
Frequency signal preset value is inconsistent, then sends out alarm.
Further include hygrometer, the hygrometer periodically monitor in pipeline humidity and generate moisture signal pass to it is described
Communication device.
The present invention has following features compared with the domestic and international prior art：
(1) it is non-intervention type hydrops measurement method, is not necessarily to the trepanning on tube wall, line strength will not be damaged, nothing
Risk of leakage is especially suitable for conveying corrosivity, the monitoring of toxic medium pipeline inner product liquid；
(2) it is not formed by gas-liquid phase medium in pipeline and temperature, pressure and other parameters influences, without carrying out the velocity of sound
Correction；
(3) energy needed for is small, will not cause safety problem, and explosion-proof performance is good；
(4) movement-less part, no pressure loss, maintenance cost are low；
(5) normal operations such as pipeline pigging are not influenced.
Description of the drawings
Fig. 1 is the structural schematic diagram of gas pipeline hydrops monitoring system of the present invention；
Wherein, 1 is appendix；2 be acoustical generator；3 be audio detection device；4 be communication device；5 be monitoring center；7 are
Tone leading body.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance or the quantity for implicitly indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be bright
Show or implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple " contain
Justice is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；
It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in the present invention.
Embodiment 1
A kind of gas pipeline hydrops monitoring system, including：
Gas sensor, for detecting gas concentration in gas pipeline, generating gas concentration signal and sending；
Hydrops detection device, including：Acoustical generator is arranged on the tube wall of gas pipeline side, is used for tube wall transmitting sound
Wave；The tube wall of the pipeline other side is equipped with audio detection device；
Communication device is connected to the gas sensor and audio detection device, for receiving the gas concentration signal
With the audio signal, and above-mentioned two signal is transmitted to monitoring center；
Monitoring center, the monitoring center are stored with gas concentration monitoring information table, the gas concentration monitoring information table
Middle record has gas concentration setting value；
Record has the audio detection device when gas pipeline inner product liquid measure allows maximum value to detect in the audio-frequency information table
The audio settings value arrived；
Monitoring center receives the gas concentration signal from communication device and the audio signal, and by the gas
Concentration signal and audio signal are compared with the gas concentration setting value, audio settings value respectively, when judging the gas
Concentration signal and gas concentration setting value be inconsistent or the audio signal and audio settings value it is inconsistent, send out alarm；
Tone leading body is additionally provided in the gas pipeline, the both ends of the tone leading body are separately connected the acoustical generator and audio inspection
Survey device.
As the further preferred scheme of the present embodiment, the acoustical generator, which is arranged in gas pipeline, generates the low-lying of hydrops
On the corresponding pipeline outer wall in place.
As the further preferred scheme of the present embodiment, the tone leading body is sound guide tube or leading note stick.
The sound frequency that the acoustical generator is sent out is fixed value.
A kind of gas pipeline monitoring method is monitored using the gas pipeline monitoring system；This method includes such as
Lower step：
Step 1: being stored in monitoring center in advance and the gas concentration monitoring information table and the audio being arranged
The audio-frequency information table that detection device detects；
Record has characteristic gas ingredient corresponding to gas and gas concentration to set in the gas concentration monitoring information table
Definite value；
Record has the audio detection device when gas pipeline inner product liquid measure allows maximum value to detect in the audio-frequency information table
The audio settings value arrived；
Step 2: monitoring center obtains the real gas concentration signal and audio signal that communication device is sent, by practical gas
Bulk concentration signal is compared with the gas concentration setting value recorded in gas concentration monitoring information table；
Audio signal is compared with the audio settings value recorded in audio-frequency information table；
When the gas concentration for judging to record in the gas concentration signal and gas concentration monitoring information table is inconsistent or sound
Frequency signal and the audio settings value recorded in audio-frequency information table are inconsistent, then send out alarm.
Embodiment 2
The present embodiment increases hygrometer for embodiment, and the hygrometer periodically monitors humidity in pipeline
And generate moisture signal and pass to the communication device, signal is being passed to monitoring center by communication device, pre- in monitoring center
Humidity maximum value equipped with permission, when the appropriate signal that hygrometer detects is more than the humidity maximum value, monitoring center is sent out
Alarm.
Claims (6)
1. a kind of gas pipeline hydrops monitoring system, which is characterized in that including：
Gas sensor is installed in gas pipeline, and for detecting real gas concentration in gas pipeline, it is dense to generate real gas
Degree signal is simultaneously sent；
Acoustical generator is arranged on the tube wall of gas pipeline side, for emitting sound wave to tube wall；It is set on the tube wall of the pipeline other side
There are audio detection device, the audio detection device to be used to receive the sound that the acoustical generator is sent out and be translated into practical sound
Frequency signal；
Communication device is believed for receiving real gas concentration and actual audio signal, and by real gas concentration and actual audio
Number it is transmitted to monitoring center；
Monitoring center, the monitoring center is interior to have gas concentration preset value and audio signal preset value；
Monitoring center obtains the real gas concentration and actual audio signal that communication device is sent, by real gas concentration and gas
Concentration preset value is compared；
Actual audio signal is compared with audio signal preset value；
When judging that inconsistent the real gas concentration and gas concentration preset value or actual audio signal and audio signal are pre-
If value is inconsistent, then alarm is sent out；
Tone leading body is additionally provided in the gas pipeline, the both ends of the tone leading body are separately connected the acoustical generator and audio detection dress
It sets.
2. gas pipeline hydrops monitoring system according to claim 1, which is characterized in that the acoustical generator is arranged in gas transmission
On the corresponding pipeline outer wall in low-lying place for generating hydrops in pipeline.
3. gas pipeline hydrops monitoring system according to claim 1, which is characterized in that the tone leading body be sound guide tube or
Leading note stick.
4. gas pipeline hydrops monitoring system according to claim 1, which is characterized in that acoustical generator position fixed frequency
Acoustical generator.
5. a kind of gas pipeline monitoring method, which is characterized in that using the gas pipeline hydrops monitoring as described in claim 1
System is monitored；This method comprises the following steps：
Step 1: real gas concentration measurement and control information table and the audio detection are stored and are arranged in monitoring center in advance
The audio-frequency information table that device detects；
Record has gas concentration preset value in the real gas concentration measurement and control information table；
Record has the audio detection device when gas pipeline inner product liquid measure allows maximum value to detect in the audio-frequency information table
Audio signal preset value；
Step 2: monitoring center obtains the real gas concentration and actual audio signal that communication device is sent, real gas is dense
Degree is compared with the gas concentration preset value recorded in real gas concentration measurement and control information table；
Actual audio signal is compared with the audio signal preset value recorded in audio-frequency information table；
When judging that inconsistent the real gas concentration and gas concentration preset value or actual audio signal and audio signal are pre-
If value is inconsistent, then alarm is sent out.
6. gas pipeline monitoring method according to claim 5, which is characterized in that further include hygrometer, the hygrometer
It periodically monitors humidity in pipeline and generates moisture signal and pass to the communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909087.9A CN105403288B (en) | 2015-12-10 | 2015-12-10 | A kind of gas pipeline hydrops monitoring system and its monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909087.9A CN105403288B (en) | 2015-12-10 | 2015-12-10 | A kind of gas pipeline hydrops monitoring system and its monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105403288A CN105403288A (en) | 2016-03-16 |
| CN105403288B true CN105403288B (en) | 2018-09-18 |
Family
ID=55468915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510909087.9A Expired - Fee Related CN105403288B (en) | 2015-12-10 | 2015-12-10 | A kind of gas pipeline hydrops monitoring system and its monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105403288B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720765B (en) * | 2020-05-25 | 2023-10-20 | 中国石油化工股份有限公司 | Method and system for detecting corrosion state of gas pipeline |
| CN111735518B (en) * | 2020-06-19 | 2022-06-28 | 山东省特种设备检验研究院集团有限公司 | Intelligent detection system for accumulated liquid of oil and gas pipeline |
| CN114166157B (en) * | 2021-12-08 | 2023-10-20 | 国能锅炉压力容器检验有限公司 | Intelligent quantitative method for oxide skin in tube according to ray intensity curve |
| CN115587640B (en) | 2022-11-24 | 2023-04-07 | 成都秦川物联网科技股份有限公司 | Intelligent gas pipeline pigging safety management method, internet of things system and medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092862A (en) * | 1993-03-18 | 1994-09-28 | 清华大学 | Self-correcting supersonic level gauge |
| CN1314992A (en) * | 1998-07-03 | 2001-09-26 | 奈勒斯菲尔德控制有限公司 | Method and arrangement for measuring fluid |
| CN1334457A (en) * | 2001-09-11 | 2002-02-06 | 中国石油天然气股份有限公司 | Method for detecting and checking liquid holdup of multiphase pipe flow |
| CN101960303A (en) * | 2008-11-11 | 2011-01-26 | 韩国电力系统开发设计有限公司 | Apparatus for measuring fluid leakage from a valve using ultrasonic wave, sound, and temperature variations, and method for measuring fluid leakage using same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001067050A1 (en) * | 2000-03-09 | 2001-09-13 | Nest International N.V. | Simultaneous determination of multiphase flowrates and concentrations |
| US6447675B1 (en) * | 2000-08-29 | 2002-09-10 | Ron James | Fish pond filter system |
-
2015
- 2015-12-10 CN CN201510909087.9A patent/CN105403288B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092862A (en) * | 1993-03-18 | 1994-09-28 | 清华大学 | Self-correcting supersonic level gauge |
| CN1314992A (en) * | 1998-07-03 | 2001-09-26 | 奈勒斯菲尔德控制有限公司 | Method and arrangement for measuring fluid |
| CN1334457A (en) * | 2001-09-11 | 2002-02-06 | 中国石油天然气股份有限公司 | Method for detecting and checking liquid holdup of multiphase pipe flow |
| CN101960303A (en) * | 2008-11-11 | 2011-01-26 | 韩国电力系统开发设计有限公司 | Apparatus for measuring fluid leakage from a valve using ultrasonic wave, sound, and temperature variations, and method for measuring fluid leakage using same |
Non-Patent Citations (2)
| Title |
|---|
| 气液混输管道声学检测及安全运行研究;钱小平;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20110415(第04期);第B019-315页 * |
| 管道积液超声波检测技术研究;未小会;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20111115(第11期);第B019-241页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105403288A (en) | 2016-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6363788B1 (en) | Noninvasive detection of corrosion, mic, and foreign objects in containers, using guided ultrasonic waves | |
| US6367328B1 (en) | Noninvasive detection of corrosion, MIC, and foreign objects in fluid-filled containers using leaky guided ultrasonic waves | |
| CN105403288B (en) | A kind of gas pipeline hydrops monitoring system and its monitoring method | |
| CN101839746A (en) | Method and device for measuring accumulated liquid of natural gas pipeline | |
| US20200182736A1 (en) | Fuel leakage monitoring apparatus and method in pipe line | |
| CN102644851B (en) | Intelligent detection ball for dry natural gas pipeline | |
| US10458871B2 (en) | Apparatus and method for measuring the pressure inside a pipe or container | |
| US20190078927A1 (en) | Sensor | |
| JP2005536726A (en) | Acoustic inspection device | |
| CN107167219B (en) | Self-calibration externally-attached ultrasonic liquid level switch measurement system and measurement method thereof | |
| MX2010014443A (en) | Apparatus and method to locate an object in a pipeline. | |
| CN104122192A (en) | A device and a method for detecting metal corrosion status | |
| CN105571675B (en) | A kind of gas pipeline safety monitoring system and its monitoring method | |
| CN105547414B (en) | A kind of gas pipeline monitoring system and its monitoring method | |
| US8911891B2 (en) | Battery electrolyte level detector apparatus | |
| US7802470B2 (en) | Ultrasonic liquid level detector | |
| CN105547413B (en) | A kind of gas pipeline hydrops monitoring system and its monitoring method with blimp | |
| JP2002340654A (en) | Method and device for detecting liquid level by sound | |
| JP2007047056A (en) | Ultrasonic leakage position detection device | |
| KR101608819B1 (en) | Apparatus and system for detacting oil leakage of gas station to prevent pollution of soil or underwater | |
| JP4329773B2 (en) | Ultrasonic inspection method for fluororesin inspection object | |
| CN207396410U (en) | A kind of acoustic fix ranging C for corrosive pipeline detection sweeps imaging device | |
| CN113720765B (en) | Method and system for detecting corrosion state of gas pipeline | |
| CN105181083A (en) | Liquid level monitoring system of liquid nitrogen filling device | |
| US11609209B2 (en) | Flooded member detection by means of ultrasound |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180807 Address after: 527400 Guangdong Xinxing County new town Guang Xing Road West China combustion Co., Ltd. Applicant after: XINXING ZHONGRAN CITY GAS DEVELOPMENT Co.,Ltd. Address before: 214101 room two, science and Technology Pioneer Park, 34 plot 7, Changjiang Road, Wuxi, Jiangsu, 502 Applicant before: WUXI TUONENG AUTOMATION TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20211210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |