CN111911817B - On-line monitoring method and device for leakage of buried pipe network - Google Patents
On-line monitoring method and device for leakage of buried pipe network Download PDFInfo
- Publication number
- CN111911817B CN111911817B CN202010598622.4A CN202010598622A CN111911817B CN 111911817 B CN111911817 B CN 111911817B CN 202010598622 A CN202010598622 A CN 202010598622A CN 111911817 B CN111911817 B CN 111911817B
- Authority
- CN
- China
- Prior art keywords
- data
- gas concentration
- monitoring
- concentration
- power supply
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Abstract
The invention provides an on-line monitoring method and a device for leakage of a buried pipe network, which are used for collecting and detecting the concentration of combustible gas in soil, and the specific method comprises the following steps: the method comprises the steps of collecting gas concentration data in an area according to a preset time interval, comparing the collected gas concentration with a preset alarm threshold value to determine event data, comparing a stored data volume with a preset stored data volume threshold value to determine batch data or real-time data, and accordingly formulating an emergency plan and analyzing the gas concentration change trend. The whole monitoring system is in a low power consumption mode except for data acquisition, data storage and data transmission, so that the time and frequency of data transmission are greatly reduced, the power consumption of equipment and the timeliness of data detection are both considered, and the monitoring system has the advantages of high accuracy of data detection, low power consumption of monitoring equipment, high timeliness of the monitoring system, lower monitoring cost and the like.
Description
Technical Field
The invention relates to the field of buried gas pipe network monitoring, in particular to a buried pipe network leakage online monitoring method and device.
Background
The town gas pipe network is a system formed by all facilities from a door station to a user, and comprises a door station or a gas source plant compressor station, a gas storage facility, a pressure regulating device, a transmission and distribution pipeline, a metering device, a management facility, a monitoring system and the like. In recent years, catastrophic accidents caused by gas pipeline leakage frequently occur, the safety of the masses is threatened due to aging and leakage of the gas pipeline, and the safe operation and maintenance of the gas pipeline are challenged. The combustible gas collection device can be used for collecting the combustible gas leakage along the gas pipeline to deal with the complex environment in the soil.
At present, an infrasonic wave method, a negative pressure wave method or a transmission difference method is generally used for monitoring pipeline leakage in an industrial buried pipe network, and the monitoring mode has higher cost and is difficult to popularize in a large area. Civil city gas monitoring basically depends on the workman to carry the combustible gas detector and patrols the line, carries out combustible gas concentration and detects in important position, leads to the real-time nature and the accuracy of the combustible gas concentration data of gathering than lower. And a combustible gas detection vehicle is also used for line patrol, but the time and labor are wasted, and 24-hour monitoring cannot be realized. Some combustible gas detectors are hung in key areas for monitoring, the coverage capacity is limited, if the monitoring is carried out in real time for 24 hours, the power consumption of the combustible gas acquisition device is serious, workers need to frequently maintain or replace acquisition equipment at each combustible gas acquisition point, and the monitoring cost is high.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to: the method and the device for monitoring the leakage of the buried pipe network on line are provided, the gas concentration data in an area is collected according to a preset time interval, the collected gas concentration is compared with a preset alarm threshold value to determine event data, the stored data volume is compared with a preset stored data volume threshold value to determine batch data or real-time data, so that an emergency plan is formulated, the gas concentration change trend is analyzed, the power consumption of equipment and the timeliness of data detection are both considered, and the method and the device have the advantages of high accuracy of detected data, low power consumption of monitoring equipment, high timeliness of a monitoring system, lower monitoring cost and the like.
The utility model provides a buried pipe network leaks on-line monitoring method for gather and detect the combustible gas concentration in the soil, arrange gas concentration acquisition transmission equipment at every pipe network monitoring area, every gas concentration acquisition transmission equipment includes microprocessing unit, concentration acquisition unit, data storage unit and data transceiver unit, is equipped with the on-line monitoring server at the background, and concrete monitoring step is as follows:
s1: each gas concentration acquisition and transmission device acquires gas concentration data of each region at preset time intervals through a concentration acquisition unit and judges whether the acquired gas concentration data exceed a preset alarm threshold value or not through a micro-processing unit;
s2: if yes, calibrating the collected gas concentration data and the equipment information into event data, and sending the event data to the online monitoring server in real time through the data receiving and sending unit; the online monitoring server gives an alarm in real time, and an emergency plan and an affected area distribution map are analyzed and formulated according to event data; if not, storing the acquired gas concentration data in a data storage unit;
s3: the data storage unit is used for continuously storing the acquired gas concentration data and judging whether the stored data volume reaches a preset stored data volume threshold value, if so, all data and equipment information in the data storage unit are calibrated into batch data or real-time data, and the batch data or the real-time data are sent to the online monitoring server in real time through the data receiving and sending unit; the online monitoring server analyzes the gas concentration change trend, the gas leakage rate and the gas leakage danger level of a corresponding area according to batch data or real-time data, and formulates an emergency plan and an influence area distribution diagram; if not, the process returns to step S1.
Furthermore, each gas concentration acquisition and transmission device further comprises a power supply unit, a power supply port of the micro-processing unit is electrically connected with the power supply unit, the first information acquisition port is connected with the concentration acquisition unit, the first communication port is connected with the data storage unit, and the second communication port is connected with the data receiving and transmitting unit.
Furthermore, each gas concentration acquisition and transmission device further comprises a sound sensing unit and a vibration sensing unit, a second information acquisition port of the micro-processing unit is connected with the sound sensing unit, and a third information acquisition port is connected with the vibration sensing unit.
An on-line monitoring device for leakage of a buried pipe network is used for collecting and detecting the concentration of combustible gas in soil and comprises a buried device and a detection device arranged in the buried device, wherein the detection device comprises a circuit board, a concentration sensor, a power supply bin and a support frame; the underground device comprises a vertically arranged sleeve and an embedded bin arranged at the top end of the sleeve, wherein a mounting groove is formed in the bottom of the embedded bin, the power supply bin is sleeved in the sleeve, and the support frame is mounted in the mounting groove.
Further, detection device still includes circuit board installation storehouse and installation pipe, the support frame includes the support apron and the vertical first standpipe of installing in the support apron bottom surface that the level was arranged, supports the apron and is equipped with first through-hole and second through-hole, and the installation pipe vertical installation just corresponds with first through-hole on supporting the apron, and the power cord is installed in the installation pipe, and first through-hole is used for the power supply line to pass, and the second through-hole is used for waiting to detect gaseous passing through, and circuit board installation storehouse is installed at the installation pipe top, and the circuit board is installed in circuit board installation storehouse.
Furthermore, the detection device also comprises a plurality of steam-proof covers, the power supply bin comprises a second vertical pipe, a bottom cover and a top cover, the steam-proof covers are arranged on the outer side surface of the second vertical pipe and incline downwards, and the top of the outer side surface of the second vertical pipe is provided with a clamping groove; a clamping protrusion matched with the clamping groove is arranged on the inner side surface of the first vertical pipe; the top cover is provided with a power supply terminal and a voltage converter, the input end of the voltage converter is connected with the power supply terminal, and the output end of the voltage converter is connected with the power supply line.
Further, detection device still includes buckler, sound sensor, vibrations sensor and pilot lamp, and concentration sensor installs in the buckler, and the vertical installation of buckler and top are stretched into and are installed on the circuit board in the circuit board installation storehouse, and sound sensor, vibrations sensor and pilot lamp are all installed on circuit board installation storehouse side, and sound sensor, vibrations sensor and pilot lamp are connected to on the circuit board respectively.
Furthermore, a plurality of air guide holes for allowing the gas to be detected to pass through are formed in the peripheral side of the sleeve.
Further, pre-buried storehouse includes the storehouse body, end cover and locking screw, is equipped with a plurality of third through-holes that are used for supplying to wait to detect gas and pass through on the end cover, and the mounting groove sets up in storehouse body bottom, supports to be equipped with the fourth through-hole on the apron, and storehouse body bottom is equipped with the fifth through-hole, and locking screw passes fourth through-hole and fifth through-hole, will support the apron to fix on pre-buried storehouse.
Furthermore, a microprocessor, a memory and a data transceiving module are installed on the circuit board, one end of a power line is electrically connected with a power supply end of the microprocessor, and the other end of the power line is connected with a power supply through a voltage converter; the first information acquisition end of the microprocessor is electrically connected with the concentration sensor, the second information acquisition end is electrically connected with the sound sensor, the third information acquisition end is electrically connected with the vibration sensor, the first communication end is in communication connection with the memory, and the second communication end is in communication connection with the data transceiver module.
Compared with the prior art, the invention has the following advantages:
the invention provides a method and a device for online monitoring of leakage of a buried pipe network, which are characterized in that gas concentration data in an area are collected according to a preset time interval, the collected gas concentration is compared with a preset alarm threshold value to determine event data, and a stored data volume is compared with a preset stored data volume threshold value to determine batch data or real-time data, so that an emergency plan is formulated, and the gas concentration change trend is analyzed; the whole monitoring system is in a low power consumption mode except for data acquisition, data storage and data transmission, so that the time and frequency of data transmission are greatly reduced, the working time of the equipment in power supply working is prolonged, meanwhile, when the concentration of combustible gas reaches a threshold value, the system can quickly respond, and data are sent to a server in real time, and the timeliness of the system is guaranteed. The device power consumption and the data detection timeliness are considered, and the device has the advantages of high data detection accuracy, low monitoring device power consumption, high monitoring system timeliness, low monitoring cost and the like.
Drawings
Fig. 1 is a control flow chart of a buried pipe network leakage online monitoring method according to an embodiment of the present invention;
fig. 2 is a schematic view of a first structure of the buried pipe network leakage on-line monitoring according to the second embodiment of the present invention;
fig. 3 is a second schematic structural diagram of on-line monitoring of leakage of a buried pipe network according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a detection apparatus according to a second embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a power supply bin according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a buried device in a second embodiment of the present invention;
fig. 7 is a schematic cross-sectional structure diagram of on-line monitoring of leakage of a buried pipe network in a second embodiment of the present invention;
FIG. 8 is a schematic structural view of a supporting frame according to a second embodiment of the present invention;
FIG. 9 is an enlarged view of the concentration sensor according to the second embodiment of the present invention;
fig. 10 is a gas flow diagram of the buried pipe network leakage on-line monitoring detection gas in the second embodiment of the present invention;
fig. 11 is a circuit block diagram of a circuit board according to a second embodiment of the invention.
Reference numerals:
1. a circuit board mounting bin; 2. a power supply bin; 3. a support frame; 4. a support cover plate; 5. a first vertical tube; 6. a second standpipe; 7. a bottom cover; 8. a top cover; 9. clamping the groove; 10. clamping the bulges; 11. installing a pipe; 12. a first through hole; 13. a second through hole; 14. a power source; 15. a circuit board; 16. a waterproof cover; 17. a microprocessor; 18. a memory; 19. a data transceiver module; 20. a concentration sensor; 21. a sound sensor; 22. a shock sensor; 23. an indicator light; 24. a power line; 25. a vapor shield; 26. a power supply terminal; 27. a voltage converter; 28. pre-burying a bin; 29. a sleeve; 30. a bin body; 31. an end cap; 32. a third through hole; 33. mounting grooves; 34. an air vent; 35. locking screws; 36. and (5) placing the shelf.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
referring to fig. 1, an online monitoring method for leakage of a buried pipe network is used for collecting and detecting the concentration of combustible gas in soil, a gas concentration collecting and transmitting device is arranged in each pipe network monitoring area, each gas concentration collecting and transmitting device comprises a micro-processing unit, a concentration collecting unit, a data storage unit and a data transceiving unit, an online monitoring server is arranged at the background, and the specific monitoring steps are as follows:
s1: each gas concentration acquisition and transmission device acquires gas concentration data of each region at preset time intervals through a concentration acquisition unit and judges whether the acquired gas concentration data exceed a preset alarm threshold value or not through a micro-processing unit; specifically, the preset alarm threshold C of the combustible gas concentration may be set in advance according to different detection scenarios, for example, the alarm threshold C1 of the detection device arranged in the residential area is relatively low because the precaution against gas safety of the residential area is relatively low, and the alarm threshold C2 of the detection device arranged in the gas transportation station/transit station or the like is higher than C1 because some combustible gas may exist in normal states in these areas and the precaution against gas safety is high.
S2: if yes, calibrating the collected gas concentration data and the equipment information into event data, and sending the event data to the online monitoring server in real time through the data receiving and sending unit; the online monitoring server gives an alarm in real time, and an emergency plan and an affected area distribution map are analyzed and formulated according to event data; if not, storing the acquired gas concentration data in a data storage unit; specifically, the event data includes the collected gas concentration data, system display time information and collected transmission equipment information, the equipment information includes an equipment serial number and an equipment ID number, the equipment serial number refers to an equipment number, and the equipment ID number refers to a monitoring area where equipment is placed; according to the event data, the online monitoring server can give an alarm according to the combustible gas concentration in the first time, can give an alarm by sending short messages, generates an emergency plan, displays and analyzes an influence area, and is high in timeliness of the monitoring system.
S3: the data storage unit is used for continuously storing the acquired gas concentration data and judging whether the stored data volume reaches a preset stored data volume threshold value, if so, all data and equipment information in the data storage unit are calibrated into batch data or real-time data, and the batch data or the real-time data are sent to the online monitoring server in real time through the data receiving and sending unit; the online monitoring server analyzes the gas concentration change trend, the gas leakage rate and the gas leakage danger level of a corresponding area according to batch data or real-time data, and formulates an emergency plan and an influence area distribution diagram; if not, the process returns to step S1. Specifically, when the data quantity stored in the data storage unit is equal to the storage quantity threshold value N and gas concentration data is collected at least twice or more than twice, the data corresponds to batch data; when the data quantity stored in the data storage unit is equal to the storage quantity threshold value N and only once gas concentration data is collected, corresponding to real-time data. The batch data or real-time data comprises all stored data volume in the data storage unit, system display time information and acquisition and transmission equipment information, and according to the batch data or the real-time data, the online monitoring server can analyze the concentration change trend of combustible gas, the gas leakage rate and the leakage danger level in the monitored area, generate an emergency plan and analyze and display the affected area. After all the data in the data storage unit is transmitted to the online monitoring server, all the data in the data storage unit is cleared.
According to the method for on-line monitoring of leakage of the buried pipe network, the preset time interval detected by each gas concentration acquisition and transmission device can be set by itself and can be set according to the risk level of leakage of combustible gas in the monitoring area, for example, the risk level of leakage of combustible gas in the monitoring area 1 is A1, the time interval detected in the monitoring area 1 is T1, the risk level of leakage of combustible gas in the monitoring area 2 is A2, the time interval detected in the monitoring area 2 is T2, the risk level of leakage of combustible gas in the monitoring area 3 is A3, and the time interval detected in the monitoring area 3 is T3; if the risk level of a1 is higher than a2 and the risk level of a2 is higher than A3, then T1 is less than T2 and T2 is less than T3. The monitoring preset time interval can be adjusted and set according to the combustible gas concentration change trend of the monitoring area, for example, the concentration detected by the monitoring area 1 is continuously increased, but the concentration does not reach the preset alarm threshold, the detection time interval can be continuously shortened according to the combustible gas concentration change trend, if the concentration is detected once in 10 seconds in the early stage, and the detection time interval can be adjusted to be detected once in 5 seconds along with the continuous increase of the detected concentration; in specific implementation, in order to improve detection timeliness, the detection time interval may be set to 1 second/time. The monitoring preset time interval can be adjusted and set according to the distance between the monitoring area and the monitoring center/maintenance center, and if the monitoring area is far away from the monitoring center/maintenance center, the detection time interval can be properly shortened. By the method, the average power consumption of the gas concentration acquisition and transmission equipment can be greatly reduced, and the monitoring cost can also be reduced.
In the method for on-line monitoring of leakage of the buried pipe network, at ordinary times, the soil in the pipe network monitoring area is free of combustible gas, the concentration of the combustible gas detected by the gas concentration acquisition and transmission equipment is 0, the acquisition frequency can be a little lower, the concentration of the combustible gas can be acquired once in ten seconds, and the concentration of the combustible gas can also be acquired once in 1 second; the data transmission method comprises the steps that batch data are collected within a certain time length and are continuously stored in a data storage unit, and correspondingly, in order to enable the data transmission frequency to be low, when the data storage unit stores a certain data volume, and the data volume meets a preset stored data volume threshold value, the batch data are transmitted to an online monitoring server. For example, the preset stored data volume threshold is set to 60 data, and no matter in a normal state, a risk state or an alarm state, one combustible gas concentration data is collected for 10 seconds or 1 second, and one batch of data is sent to the online monitoring server until the preset stored data volume threshold of 60 data is reached, so that the data sending frequency of the gas concentration collection and transmission equipment is very low, the power consumption of the gas concentration collection and transmission equipment is greatly reduced, and the gas concentration collection and transmission equipment can be used for more than 5 years by adopting a storage battery for power supply. Or according to another embodiment, in the normal state, one combustible gas concentration data is acquired within 10 seconds, and the gas concentration acquisition and transmission equipment sends batch data to the online monitoring server once every 10 minutes; in a risk state, collecting combustible gas concentration data within 1 second, and sending batch data to the online monitoring server once every 1 minute by the combustible gas concentration collecting and transmitting equipment; and in the alarm state, the gas concentration acquisition and transmission equipment sends batch data to the online monitoring server every 1 second. Therefore, in the ordinary state, the data transmission frequency of the gas concentration acquisition and transmission equipment is very low, the power consumption of the gas concentration acquisition and transmission equipment is greatly reduced, and the gas concentration acquisition and transmission equipment can be used for more than 5 years by adopting a storage battery for power supply. Batch data is collected in the normal state, and real-time data is collected in the alarm state.
According to the buried pipe network leakage on-line monitoring method, each fuel gas concentration acquisition transmission device further comprises a power supply unit, a sound sensing unit and a vibration sensing unit, a power supply port of the micro-processing unit is electrically connected with the power supply unit, a first information acquisition port is connected with the concentration acquisition unit, a second information acquisition port is connected with the sound sensing unit, a third information acquisition port is connected with the vibration sensing unit, a first communication port is connected with the data storage unit, and a second communication port is connected with the data receiving and transmitting unit.
The buried pipe network leakage on-line monitoring method is characterized in that the collection is carried out at a specific frequency, and the collected frequency can be remotely modified. And immediately transmitting the concentration data to a server when the concentration data of the combustible gas acquired at a specific frequency exceeds a set combustible gas concentration threshold. And storing the combustible gas concentration data acquired at a specific frequency, and immediately transmitting all the stored concentration data to a server when the number of the stored combustible gas concentration data reaches a storage number threshold value. And clearing the stored combustible gas concentration data after all the combustible gas concentration data are successfully sent. By setting the storage quantity threshold value to be 1, the combustible gas concentration data acquired at the specific frequency can reach the storage quantity threshold value when being stored every time, and the combustible gas concentration data are sent to the server at the specific frequency.
According to the buried pipe network leakage online monitoring method, the concentration acquisition unit of the concentration acquisition transmission equipment is used for acquiring the concentration of combustible gas in the cavity of the detection equipment, wherein the combustible gas in the detection cavity is formed by soil diffusion and aggregation. And the data storage unit is used for storing the combustible gas concentration data acquired by the concentration acquisition unit. And the data receiving and sending unit is used for sending the system data to the background online monitoring server and receiving the parameters sent by the server. The method comprises the steps of collecting gas concentration data in an area according to a preset time interval, comparing the collected gas concentration with a preset alarm threshold value to determine event data, comparing a stored data amount with a preset stored data amount threshold value to determine batch data or real-time data, so as to formulate an emergency plan and analyze the gas concentration change trend; the whole monitoring system is in a low power consumption mode except for data acquisition, data storage and data transmission, so that the time and frequency of data transmission are greatly reduced, the working time of the equipment in power supply working is prolonged, meanwhile, when the concentration of combustible gas reaches a threshold value, the system can quickly respond, and data are sent to a server in real time, and the timeliness of the system is guaranteed.
Example two:
referring to fig. 2 to 9, an on-line monitoring device for leakage of a buried pipe network is used for collecting and detecting the concentration of combustible gas in soil, and comprises a buried device and a detection device installed in the buried device, wherein the detection device comprises a circuit board 15, a concentration sensor 20, a power supply 14, a power supply bin 2 and a support frame 3, the support frame 3 is installed at the top of the power supply bin 2, the power supply 14 is installed in the power supply bin 2, the power supply bin 2 is connected to the circuit board 15 through a power line 24, and the concentration sensor 20 is electrically connected with the circuit board 15; the underground device comprises a vertically arranged sleeve 29 and an embedded bin 28 arranged at the top end of the sleeve, wherein the bottom of the embedded bin is provided with a mounting groove 33, a power supply bin is sleeved in the sleeve, and a support frame is mounted in the mounting groove. Specifically, the power of this embodiment adopts the battery, and detection device passes through support frame and mounting groove suit and buries the device in, buries the device and buries and put in the soil around the combustible gas pipeline, if the combustible gas pipeline takes place to leak, during combustible gas gets into monitoring devices along the soil gap, detects the concentration of combustible gas by concentration sensor.
The buried pipe network leakage on-line monitoring device further comprises a circuit board mounting bin 1, a mounting pipe 11, a waterproof cover 16, a steam-proof cover 25, a power supply terminal 26 and a voltage converter 27. The supporting frame 3 comprises a supporting cover plate 4 arranged horizontally and a first vertical pipe 5 vertically arranged on the bottom surface of the supporting cover plate; the power supply bin 2 comprises a second vertical pipe 6, a bottom cover 7 and a top cover 8; the top of the outer side surface of the second vertical pipe 6 is provided with a clamping groove 9, and the inner side surface of the first vertical pipe 5 is provided with a clamping bulge 10 matched with the clamping groove; the support cover 4 is provided with a first through hole 12 and a second through hole 13.
Specifically, the circuit board is installed in the circuit board installation bin, and can be installed horizontally or vertically, and the horizontal installation is adopted in the embodiment. The power supply bin is surrounded by the second vertical pipe, the bottom cover and the top cover, the waterproof threaded rubber ring is arranged on the bottom cover, water vapor in soil can be prevented from entering the power supply bin, the clamping groove of the second vertical pipe and the clamping protrusion of the first vertical pipe are installed in a matched mode, and the power supply bin is installed at the bottom of the supporting cover plate. The installation pipe 11 is vertically installed on the supporting cover plate and corresponds to the first through hole, the power line 24 is installed in the installation pipe, the first through hole is used for the power line to pass through, and the second through hole is used for the gas to be detected to pass through. Circuit board installation storehouse fixed mounting is at the installation pipe top, and concentration sensor installs in the buckler, and the vertical installation of buckler and top are stretched into circuit board installation storehouse and are installed on the circuit board, adopt the buckler as hindering damp device, can prevent that concentration sensor from weing. The four steam-proof covers are arranged on the outer side surface of the second vertical pipe and incline downwards relatively, so that water vapor in soil can be prevented from entering the power supply bin. A power supply terminal 26 and a voltage converter 27 are mounted on the top cover, the voltage converter having an input connected to the power supply terminal and an output connected to the power supply line.
Referring to fig. 11, the device for on-line monitoring of leakage of buried pipe network further comprises a microprocessor 17, a memory 18, a data transceiver module 19, a sound sensor 21, a vibration sensor 22 and an indicator lamp 23, wherein the sound sensor, the vibration sensor and the indicator lamp are all installed on the side surface of the circuit board installation bin, and the sound sensor, the vibration sensor and the indicator lamp are respectively connected to the circuit board. Specifically, the microprocessor, the memory and the data transceiver module are all arranged on the circuit board, one end of a power line is electrically connected with the power supply end of the microprocessor, and the other end of the power line is connected with a power supply through a voltage converter; the first information acquisition end of the microprocessor is electrically connected with the concentration sensor, the second information acquisition end is electrically connected with the sound sensor, the third information acquisition end is electrically connected with the vibration sensor, the first communication end is in communication connection with the memory, and the second communication end is in communication connection with the data transceiver module.
Above-mentioned bury formula pipe network leakage on-line monitoring device, sleeve pipe week side is equipped with a plurality of air guide holes 34 that are used for supplying to wait to detect gas and pass through, and a plurality of air guide holes evenly distributed are on the sleeve pipe, and monitoring devices buries in soil, waits to detect gas and gets into monitoring devices from the air guide hole. The pre-buried storehouse includes the storehouse body 30, end cover 31 and locking screw, is equipped with a plurality of third through-holes 32 that are used for supplying to wait to detect gas and pass through on the end cover, and mounting groove 33 sets up in storehouse body bottom, supports to be equipped with the fourth through-hole on the apron, and storehouse body bottom is equipped with the fifth through-hole, and locking screw 35 passes fourth through-hole and fifth through-hole, will support the apron to fix on pre-buried storehouse.
The buried pipe network leakage online monitoring device is fixedly combined into a whole through the support frame and the mounting groove of the buried device through the locking screw. Concentration sensor, sound transducer, vibrations sensor and pilot lamp all are connected through connecting plug-in components and circuit board, can play the fixed action, also have power supply and data bus communication function simultaneously. The microprocessor may be a Central Processing Unit (CPU), one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs). The concentration sensor can be an infrared combustible gas sensor or a catalytic combustion combustible gas sensor. The memory may be a volatile memory (volatile memory), such as a random-access memory (RAM); or a non-volatile memory (non-volatile memory) or a solid-state drive (SSD); or a combination of the above types of memory for storing combustible gas concentration data. The data transceiver module may be a specific integrated circuit or may be one or more microprocessors. The online monitoring server can be a portable computer such as a notebook computer, a smart phone or a login server, and all data in the data storage unit can be cleared after being transmitted to the online monitoring server. The on-line monitoring device comprises a processor and a memory, wherein the processor is used for executing a computer program stored in the memory so as to realize the buried pipe network leakage on-line monitoring method in the first embodiment. The data transceiver module can transmit data in a wireless mode through 4G, 5G, NBIOT and LoRa, and can also transmit data in a wired mode.
Referring to fig. 10, the process of detecting gas by the buried pipe network leakage online monitoring device is as follows:
the buried pipe network leakage online monitoring device is distributed in soil of each monitoring area, gas in the soil contains combustible gas leaked by a pipeline, the gas to be detected enters the sleeve 29 through the gas guide hole 34 or the sleeve opening along a soil gap, the gas to be detected enters the cavity of the buried bin 28 through the steam-proof cover 25 along the sleeve and the power supply bin, the gas overflows through the third through hole 32 on the end cover 31 and is scattered in the air, and the gas to be detected is directly contacted and collected in the cavity of the concentration sensor and the buried bin.
The specific monitoring mode of the buried pipe network leakage online monitoring device is as follows:
a1: the microprocessor controls the concentration sensor to collect combustible gas concentration data in the gas through the bus according to a preset time interval and transmits the combustible gas concentration data to the microprocessor through the bus, and the microprocessor judges that the collected combustible gas concentration exceeds a preset alarm threshold value, calibrates the collected gas concentration data and equipment information into event data and sends the event data to the online monitoring server in real time through the data transceiver module; and the online monitoring server gives an alarm in real time and analyzes and formulates an emergency plan and an influence area distribution map according to the event data. Specifically, the event data includes the collected gas concentration data, system display time information and collected transmission equipment information, the equipment information includes an equipment serial number and an equipment ID number, the equipment serial number refers to an equipment number, and the equipment ID number refers to a monitoring area where equipment is placed; according to the event data, the online monitoring server can give an alarm according to the combustible gas concentration in the first time, can give an alarm by sending short messages, generates an emergency plan, displays and analyzes an influence area, and is high in timeliness of the monitoring system.
A2: the microprocessor controls the concentration sensor to collect combustible gas concentration data in the gas through the bus according to a preset time interval and transmits the combustible gas concentration data to the microprocessor through the bus, and the microprocessor judges that the collected combustible gas concentration does not exceed a preset alarm threshold value and stores the collected combustible gas concentration data into a memory; then judging that the stored data amount in the memory does not reach a preset stored data amount threshold value, and continuously controlling the concentration sensor to acquire combustible gas concentration data in the gas by the microprocessor through the bus according to a preset time interval; when the concentration sensor collects that the concentration of the combustible gas does not exceed a preset alarm threshold value, the microprocessor stores the data into the memory; and then judging that the stored data amount in the memory reaches a preset stored data amount threshold value, and sending all the stored data to an online monitoring server by the microprocessor through the data transceiving mold, and then, clearly knowing all the data in the memory. And calibrating all data and equipment information in the data storage unit into batch data, and the online monitoring server analyzes the gas concentration change trend, the gas leakage rate and the gas leakage danger level of the corresponding region according to the batch data to formulate an emergency plan and an influence region distribution diagram.
A3: the microprocessor controls the concentration sensor to collect combustible gas concentration data in the gas through the bus according to a preset time interval and transmits the combustible gas concentration data to the microprocessor through the bus, and the microprocessor judges that the collected combustible gas concentration does not exceed a preset alarm threshold value and stores the collected combustible gas concentration data into a memory; and then judging that the stored data amount in the memory reaches a preset stored data amount threshold value, and sending all the stored data to an online monitoring server by the microprocessor through the data transceiving mold, and then, clearly knowing all the data in the memory. All data and equipment information in the data storage unit are calibrated into real-time data, and the online monitoring server analyzes the gas concentration change trend, the gas leakage rate and the gas leakage danger level of the corresponding area according to the real-time data and formulates an emergency plan and an influence area distribution diagram.
Specifically, when the data quantity stored in the data storage unit is equal to the storage quantity threshold value N and gas concentration data is collected at least twice or more than twice, the data corresponds to batch data; when the data quantity stored in the data storage unit is equal to the storage quantity threshold value N and only once gas concentration data is collected, corresponding to real-time data. The batch data or real-time data comprises all stored data volume in the data storage unit, system display time information and acquisition and transmission equipment information, and according to the batch data or the real-time data, the online monitoring server can analyze the concentration change trend of combustible gas, the gas leakage rate and the leakage danger level in the monitored area, generate an emergency plan and analyze and display the affected area. After all the data in the data storage unit is transmitted to the online monitoring server, all the data in the data storage unit is cleared.
In a possible implementation mode, the buried pipe network leakage online monitoring device is buried in soil around a pipeline, when a vibration value detected by the vibration sensor exceeds a vibration threshold value, data are sent to the microprocessor through the bus, and the microprocessor sends the vibration value to the online monitoring server through the data receiving and sending module. Therefore, the vibration generated by the construction of the large-scale machine near the monitoring area can be monitored, and measures can be taken in time.
In a possible implementation mode, the buried pipe network leakage online monitoring device is buried in soil around a pipeline, when a noise value detected by the sound sensor exceeds a noise threshold value, data are sent to the microprocessor through the bus, and the microprocessor sends the noise threshold value to the online monitoring server through the data transceiver module. Therefore, the environment noise can be monitored, and the temperature sensor can be arranged during specific implementation, is arranged on the side surface of the circuit board safety cavity and is electrically connected with the microprocessor, so that the environment temperature can be monitored.
The buried pipe network leakage online monitoring device has the advantages that:
1. the monitoring device is installed underground, can prevent water and moisture, is not influenced by other components in soil, and is high in monitoring precision.
2. The field installation is simple and easy, and whole system adopts the wireless transmission mode, need not the field and lays the cable.
3. The system has low monitoring power consumption and low power consumption design, and the battery has the longest service life of 10 years.
4. The system has strong applicability, and can be used for various natural gas pipelines or other gas pipelines, methane, ethane and the like.
5. And the system has real-time performance, and the combustible gas is immediately reported to the server when the combustible gas exceeds a certain concentration.
The buried pipe network leakage online monitoring device has the advantages that the preset time interval can be set automatically and can be set according to the combustible gas leakage risk level of the monitoring area, for example, the combustible gas leakage risk level of the monitoring area 1 is A1, the time interval of detection of the monitoring area 1 is T1, the combustible gas leakage risk level of the monitoring area 2 is A2, the time interval of detection of the monitoring area 2 is T2, the combustible gas leakage risk level of the monitoring area 3 is A3, and the time interval of detection of the monitoring area 3 is T3; if the risk level of a1 is higher than a2 and the risk level of a2 is higher than A3, then T1 is less than T2 and T2 is less than T3. The monitoring preset time interval can be adjusted and set according to the combustible gas concentration change trend of the monitoring area, for example, the concentration detected by the monitoring area 1 is continuously increased, but the concentration does not reach the preset alarm threshold, the detection time interval can be continuously shortened according to the combustible gas concentration change trend, if the concentration is detected once in 10 seconds in the early stage, and the detection time interval can be adjusted to be detected once in 5 seconds along with the continuous increase of the detected concentration; in specific implementation, in order to improve detection timeliness, the detection time interval may be set to 1 second/time. The monitoring preset time interval can be adjusted and set according to the distance between the monitoring area and the monitoring center/maintenance center, and if the monitoring area is far away from the monitoring center/maintenance center, the detection time interval can be properly shortened. By the method, the average power consumption of the gas concentration acquisition and transmission equipment can be greatly reduced, and the monitoring cost can also be reduced.
According to the buried pipe network leakage online monitoring device, gas concentration data in an area are collected according to a preset time interval, collected gas concentration is compared with a preset alarm threshold value to determine event data, and stored data quantity is compared with a preset stored data quantity threshold value to determine batch data or real-time data, so that an emergency plan is formulated, and the gas concentration change trend is analyzed; the whole monitoring system is in a low power consumption mode except for data acquisition, data storage and data transmission, so that the time and frequency of data transmission are greatly reduced, the working time of the equipment in power supply working is prolonged, meanwhile, when the concentration of combustible gas reaches a threshold value, the system can quickly respond, and data are sent to a server in real time, and the timeliness of the system is guaranteed.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the protection scope of the present invention.
Claims (4)
1. An on-line monitoring method for leakage of a buried pipe network is used for collecting and detecting the concentration of combustible gas in soil and is characterized in that: arranging gas concentration acquisition and transmission equipment in each pipe network monitoring area, wherein each gas concentration acquisition and transmission equipment comprises a micro-processing unit, a concentration acquisition unit, a data storage unit and a data transceiving unit, and an online monitoring server is arranged at the background; each gas concentration acquisition and transmission device further comprises a power supply unit, a sound sensing unit and a vibration sensing unit, wherein a power supply port of the micro-processing unit is electrically connected with the power supply unit, a first information acquisition port is connected with the concentration acquisition unit, a first communication port is connected with the data storage unit, and a second communication port is connected with the data receiving and transmitting unit; a second information acquisition port of the micro-processing unit is connected with the sound sensing unit, and a third information acquisition port is connected with the vibration sensing unit; the specific monitoring steps are as follows:
s1: each gas concentration acquisition and transmission device acquires gas concentration data of each region at preset time intervals through a concentration acquisition unit, and judges whether the acquired gas concentration data exceed a preset alarm threshold value through a micro-processing unit, wherein the preset alarm threshold value is set in advance according to different detection scenes; the preset time interval detected by each gas concentration acquisition and transmission device is set according to the combustible gas leakage risk level of the monitoring area, and the monitoring preset time interval is adjusted and set according to the combustible gas concentration variation trend of the monitoring area; in addition, the monitoring preset time interval can be adjusted and set according to the distance between the monitoring area and the monitoring center/maintenance center;
s2: if yes, calibrating the collected gas concentration data and the equipment information into event data, and sending the event data to the online monitoring server in real time through the data receiving and sending unit; the event data comprises the collected gas concentration data, system display time information and collected transmission equipment information, the equipment information comprises an equipment serial number and an equipment ID number, the equipment serial number refers to an equipment number, and the equipment ID number refers to a monitoring area where equipment is placed; the online monitoring server alarms in real time according to the event data and analyzes and formulates an emergency plan and an influence area distribution map according to the event data; if not, storing the acquired gas concentration data in a data storage unit;
s3: the data storage unit is used for continuously storing the acquired gas concentration data and judging whether the stored data volume reaches a preset stored data volume threshold value, if so, all data and equipment information in the data storage unit are calibrated into batch data or real-time data, and the batch data or the real-time data are sent to the online monitoring server in real time through the data receiving and sending unit; when the data quantity stored in the data storage unit is equal to the stored data quantity threshold value and at least two times or more than two times of gas concentration data are collected, the data correspond to batch data; when the data quantity stored in the data storage unit is equal to the threshold value of the stored data quantity and only once gas concentration data is collected, corresponding to real-time data; the batch data or the real-time data comprise all stored data volume in the data storage unit, system display time information and acquisition and transmission equipment information; after all the data in the data storage unit are transmitted to the online monitoring server, all the data in the data storage unit can be cleared; the online monitoring server analyzes the gas concentration change trend, the gas leakage rate and the gas leakage danger level of a corresponding area according to batch data or real-time data, and formulates an emergency plan and an influence area distribution diagram; if not, the process returns to step S1.
2. The utility model provides a bury formula pipe network and leak on-line monitoring device for gather and detect the combustible gas concentration in the soil, its characterized in that: the detection device comprises a circuit board, a concentration sensor, a power supply bin and a support frame, wherein the support frame is arranged at the top of the power supply bin; the underground device comprises a sleeve pipe which is vertically arranged and an embedded bin which is installed at the top end of the sleeve pipe, wherein the bottom of the embedded bin is provided with an installation groove, a power supply bin is sleeved in the sleeve pipe, and a support frame is installed in the installation groove;
the detection device also comprises a circuit board installation bin and an installation pipe, the support frame comprises a support cover plate and a first vertical pipe, the support cover plate is horizontally arranged, the first vertical pipe is vertically installed on the bottom surface of the support cover plate, the support cover plate is provided with a first through hole and a second through hole, the installation pipe is vertically installed on the support cover plate and corresponds to the first through hole, a power line is installed in the installation pipe, the first through hole is used for allowing a power line to pass through, the second through hole is used for allowing gas to be detected to pass through, the circuit board installation bin is installed at the top of the installation;
the detection device also comprises a plurality of steam-proof covers, the power supply bin comprises a second vertical pipe, a bottom cover and a top cover, the steam-proof covers are arranged on the outer side surface of the second vertical pipe and incline downwards, and the top of the outer side surface of the second vertical pipe is provided with a clamping groove; a clamping protrusion matched with the clamping groove is arranged on the inner side surface of the first vertical pipe; the top cover is provided with a power supply terminal and a voltage converter, the input end of the voltage converter is connected with the power supply terminal, and the output end of the voltage converter is connected with the power supply line;
the pre-buried bin comprises a bin body, an end cover and locking screws, wherein the end cover is provided with a plurality of third through holes for gas to be detected to pass through, a mounting groove is formed in the bottom of the bin body, a fourth through hole is formed in a supporting cover plate, a fifth through hole is formed in the bottom of the bin body, and the locking screws penetrate through the fourth through hole and the fifth through hole to fix the supporting cover plate on the pre-buried bin;
and a plurality of air guide holes for allowing the gas to be detected to pass are formed in the periphery of the sleeve.
3. The device for on-line monitoring of leakage of buried pipe network of claim 2, wherein the detection device further comprises a waterproof cover, a sound sensor, a vibration sensor and an indicator light, the concentration sensor is installed in the waterproof cover, the waterproof cover is vertically installed, the top of the waterproof cover extends into the circuit board installation bin and is installed on the circuit board, the sound sensor, the vibration sensor and the indicator light are all installed on the side face of the circuit board installation bin, and the sound sensor, the vibration sensor and the indicator light are respectively connected to the circuit board.
4. The on-line monitoring device for leakage of the buried pipe network of claim 3, wherein the circuit board is provided with a microprocessor, a memory and a data transceiver module, one end of a power line is electrically connected with a power supply end of the microprocessor, and the other end of the power line is connected with a power supply through a voltage converter; the first information acquisition end of the microprocessor is electrically connected with the concentration sensor, the second information acquisition end is electrically connected with the sound sensor, the third information acquisition end is electrically connected with the vibration sensor, the first communication end is in communication connection with the memory, and the second communication end is in communication connection with the data transceiver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010598622.4A CN111911817B (en) | 2020-06-28 | 2020-06-28 | On-line monitoring method and device for leakage of buried pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010598622.4A CN111911817B (en) | 2020-06-28 | 2020-06-28 | On-line monitoring method and device for leakage of buried pipe network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111911817A CN111911817A (en) | 2020-11-10 |
| CN111911817B true CN111911817B (en) | 2021-07-09 |
Family
ID=73227949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010598622.4A Active CN111911817B (en) | 2020-06-28 | 2020-06-28 | On-line monitoring method and device for leakage of buried pipe network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111911817B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112750292A (en) * | 2020-12-28 | 2021-05-04 | 山东理工大学 | Wireless distributed multi-information fusion monitoring system based on ZigBee |
| CN113848805A (en) * | 2021-09-22 | 2021-12-28 | 成都飞机工业（集团）有限责任公司 | Numerical control system machining state monitoring system and method |
| CN115326295B (en) * | 2022-10-13 | 2023-03-24 | 潍柴动力股份有限公司 | Hydrogen leakage detection method, device, equipment and storage medium |
| CN115330361B (en) * | 2022-10-14 | 2023-01-13 | 成都秦川物联网科技股份有限公司 | Indoor safety-based gas leakage prediction method and intelligent gas Internet of things system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201326909Y (en) * | 2008-09-27 | 2009-10-14 | 中国石油天然气股份有限公司 | Pipeline safety early warning system of combining sound vibration and electromagnetic wave |
| CN201672262U (en) * | 2010-05-07 | 2010-12-15 | 戴书斋 | Automatic monitoring and early warning system for urban underground gas pipeline network |
| CN102865459A (en) * | 2012-09-26 | 2013-01-09 | 华北电力大学（保定） | Heat supply pipe network leakage positioning system and heat supply pipe network leakage positioning method |
| CN202812804U (en) * | 2012-09-14 | 2013-03-20 | 西安奥益达石油技术开发有限公司 | Safety monitoring system for long distance deliveries of natural gas |
| CN103185201A (en) * | 2011-12-30 | 2013-07-03 | 中国石油天然气股份有限公司 | Integrated leakage monitoring terminal of manual valve chamber of oil-gas pipeline |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09324900A (en) * | 1996-06-03 | 1997-12-16 | Hitachi Ltd | Method and apparatus for monitoring thermal fatigue damage in piping or the like |
| CN201206728Y (en) * | 2008-05-09 | 2009-03-11 | 上海纳杰电气成套有限公司 | Gas safety installation |
| CN201310756Y (en) * | 2008-11-25 | 2009-09-16 | 浙江省特种设备检验研究院 | Case laying gas pipeline leakage warning device based on GPRS |
| CN103322418A (en) * | 2012-03-24 | 2013-09-25 | 潘琴 | Novel positioning device for fuel gas leakage |
| CN103883884B (en) * | 2014-04-04 | 2016-03-30 | 济南市长清计算机应用公司 | Gas safety of underground pipeline monitoring system |
| CN105546358A (en) * | 2016-01-06 | 2016-05-04 | 清华大学 | Gas pipe network leakage online monitoring system and device and mobile monitoring device |
| CN110985894B (en) * | 2019-12-31 | 2022-03-11 | 武汉安耐捷科技工程有限公司 | Buried gas detector |
| CN111161510B (en) * | 2020-01-03 | 2021-06-01 | 上海安宏建设工程有限公司 | Automatic alarm device for household gas leakage |
-
2020
- 2020-06-28 CN CN202010598622.4A patent/CN111911817B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201326909Y (en) * | 2008-09-27 | 2009-10-14 | 中国石油天然气股份有限公司 | Pipeline safety early warning system of combining sound vibration and electromagnetic wave |
| CN201672262U (en) * | 2010-05-07 | 2010-12-15 | 戴书斋 | Automatic monitoring and early warning system for urban underground gas pipeline network |
| CN103185201A (en) * | 2011-12-30 | 2013-07-03 | 中国石油天然气股份有限公司 | Integrated leakage monitoring terminal of manual valve chamber of oil-gas pipeline |
| CN202812804U (en) * | 2012-09-14 | 2013-03-20 | 西安奥益达石油技术开发有限公司 | Safety monitoring system for long distance deliveries of natural gas |
| CN102865459A (en) * | 2012-09-26 | 2013-01-09 | 华北电力大学（保定） | Heat supply pipe network leakage positioning system and heat supply pipe network leakage positioning method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111911817A (en) | 2020-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111911817B (en) | On-line monitoring method and device for leakage of buried pipe network | |
| CN107332917B (en) | Underground pipe gallery space environment data acquisition method and system with fault judgment function | |
| CN205592653U (en) | Intelligence response alarm device is revealed to gas pipeline | |
| KR100949428B1 (en) | System and method for remote monitoring gas supply apparatus | |
| CN103399540B (en) | Self diagnosis with can recover remote firmware and upgrade greenhouse monitoring system and method | |
| CN101937036A (en) | Electric appliance fault detection method, device and system | |
| CN205619990U (en) | Join in marriage electrical room cable pit water level autoalarm | |
| CN206639364U (en) | A kind of long-range uninterrupted gas alarm device and system in real time | |
| CN103940545A (en) | Fire-hydrant water pressure state monitoring system and method based on WSN | |
| CN101086801A (en) | Remote wireless monitoring system | |
| CN104515500A (en) | High voltage transmission tower monitoring method and system | |
| CN104199401A (en) | Monitoring device for rapidly finding out leakage at natural gas station | |
| CN201926528U (en) | Danger early warning system of transmission line tower based on stress detection | |
| CN113701802B (en) | Abnormality monitoring method and abnormality monitoring system for pipeline system | |
| CN110797981A (en) | Power cable safety monitoring system in tunnel | |
| CN210465699U (en) | Multifunctional hazardous gas monitoring device and monitoring and early warning system | |
| CN112964301A (en) | Monitoring method, device, system, equipment and storage medium of power pipeline | |
| CN206638377U (en) | A kind of cable pulling force detection system | |
| CN108366128A (en) | A kind of self diagnosis smog sensor-based system | |
| CN105913884B (en) | A kind of nuclear power station electrical penetration gaseous state monitors system | |
| CN104914459A (en) | Geomagnetic sensor real-time networking short-impending earthquake monitoring system and forecasting method | |
| CN106768571A (en) | A kind of cable pulling force detection system | |
| CN209543551U (en) | A kind of microenvironment monitoring device for electrical cabinet | |
| CN207541477U (en) | A kind of gas station's liquid level controlling system | |
| CN207503431U (en) | A kind of remote alarming system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |