CN104408882A - Methane detecting system based on combined manhole cover and detection alarming method - Google Patents
Methane detecting system based on combined manhole cover and detection alarming method Download PDFInfo
- Publication number
- CN104408882A CN104408882A CN201410709613.2A CN201410709613A CN104408882A CN 104408882 A CN104408882 A CN 104408882A CN 201410709613 A CN201410709613 A CN 201410709613A CN 104408882 A CN104408882 A CN 104408882A
- Authority
- CN
- China
- Prior art keywords
- well lid
- biogas
- seat ring
- hole
- methane
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1481—Security devices, e.g. indicating unauthorised opening
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Pathology (AREA)
- Emergency Management (AREA)
- Sampling And Sample Adjustment (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Analytical Chemistry (AREA)
Abstract
The invention relates to a methane detecting system based on a combined manhole cover and a detection alarming method. The methane detecting system comprises a manhole cover seat ring, wherein an outer cover for closing the manhole cover seat ring is arranged at the upper part of the manhole cover seat ring; an inner cover is also arranged in the manhole cover seat ring; a trepanning is formed in the inner cover; a waterproof mounting box is embedded in the trepanning; a circuit board is arranged in the waterproof mounting box; an MCU (Micro Controller Unit), a methane detection sensor, a power supply and a communication circuit are arranged in the circuit board; the methane detection sensor is connected with the MCU and is used for detecting the concentration of methane in a well; the power supply is used for providing a power supply for the circuit board; the communication circuit comprises an antenna pedestal which is arranged at the upper part of the waterproof mounting box and is used for fixing an antenna; an opening is formed in a position, opposite to the antenna, of the outer cover, and brings convenience to the communication of the antenna. According to the methane detecting method disclosed by the invention, the concentration of underground methane is acquired by a methane detecting system in a real time, so the construction safety of underground constructors is greatly guaranteed.
Description
Technical field
The present invention relates to a kind of biogas detection system based on Combined well lid and detection alarm method.
Background technology
Well lid is the closure at the top, gateway leading to underground installation, and the place of the public utility such as every installation tap water, telecommunications, electric power, combustion gas, heating power, fire-fighting, environmental sanitation all needs to install well lid.Along with the develop rapidly of China's economy, China's infrastructure construction welcomes again a new cycle, and the market demand of well lid in city planning and road construction is huge.But well lid is by rolling, and breakage happens occasionally, road and installation security is caused to decline.
Well lid in road is mainly used in the deep-well on defiladed route, according to the difference of each subterranean pipe line, some deep-wells are as waterway pipe, cable tubing or gas pipe line etc., deep-well be provided with the maintenance being beneficial to pipeline, but at some in particular cases, heavy rain or human factor cause well lid remove and cause personnel or object to fall into deep-well, or are impacted and jack-up by pressure in deep-well, and the appearance of these phenomenons all will bring huge potential safety hazard to the trip of people.Simultaneously when well lid is as cable, cable tubing, often there is lawless person steals cable situation generation by removing well lid, bringing loss to national wealth.
Tradition well lid is single layer structure, Yi Yin is destroyed by rolling, and the biogas concentration do not possessed being arranged at down-hole carries out acquisition function, cannot the biogas concentration of Real-Time Monitoring down-hole, once down-hole biogas excessive concentration or too low, and discharge, easily cause the personnel carrying out maintenance work to down-hole that biogas occurs poisoning or blow-up occurs, and conventional exhaust biogas is regular discharge, waste time and energy.
Summary of the invention
The object of the present invention is to provide a kind of by Real-time Collection down-hole biogas concentration, ensure the biogas detection system based on Combined well lid and the detection alarm method of the construction safety of the workmen that goes into the well.
For achieving the above object, technical scheme of the present invention is: a kind of biogas detection system based on Combined well lid, comprises well lid seat ring, and described well lid seat top is provided with the enclosing cover for closed well lid seat ring; Also inner cap is provided with in described well lid seat ring, cover in described and offer perforate, described perforate is embedded with waterproof mounting box, circuit board is provided with in described waterproof mounting box, described circuit board be provided with MCU and be connected with this MCU for detecting the biogas detecting sensor of biogas concentration in well, the power supply providing power supply for circuit board and telecommunication circuit, described telecommunication circuit comprises the antenna pedestal for fixed antenna being arranged at described waterproof mounting box top, described enclosing cover and antenna relative position are provided with opening, so that the communication of antenna.
In embodiments of the present invention, described outer covering also is provided with electronic tag.
In embodiments of the present invention, described biogas detecting sensor adopts MH-440V/D infrared gas sensor.
In embodiments of the present invention, described enclosing cover perimembranous is provided with the horizontal coupling shaft be hinged with well lid seat ring, described horizontal coupling shaft is installed in the corresponding pin shaft hole of well lid seat ring inner sidewall upper portion, the inner sidewall upper portion of described well lid seat ring is also provided with the terrace for supporting enclosing cover lower surface, and being provided with cross section in described terrace is swallow-tailed rubber groove; The madial wall of well lid seat ring is circumferentially laid with at least two L-type grooves, and described inner cap perimembranous correspondence is provided with the projection of locating with L-type fit depressions, and described L-type bottom portion of groove has the sagging recess allowing projection sink.
In embodiments of the present invention, the upper flange of described well lid seat ring is laid with at least two for lifting by crane the lifting hole(eyelet) of well lid, the described outer side covered away from horizontal coupling shaft is also provided with covered hole, and described upper flange is also provided with sled mouth near the side of covered hole.
In embodiments of the present invention, on the downside of described enclosing cover, perimembranous interval is laid with three horizontal C type spring arms, the medial extremity of described horizontal C type spring arm is fixedly connected with enclosing cover, its outboard end arranges wedge shaped projection, and on the madial wall of described well lid seat ring, correspondence is provided with the recess coordinating with wedge shaped projection and locate.
Present invention also offers a kind of biogas detection alarm method adopting the biogas detection system based on Combined well lid as described above, comprise the steps,
Step S1: the well lid ID that collection is installed on well lid electronic tag everywhere numbers, thus determines each well lid positional information, and is uploaded to well lid monitoring server, the map software on well lid monitoring server is formed well lid distribution plan;
Step S2: well lid monitoring server carries out biogas test initialization parameter configuration according to well lid positional information, and configuration information is sent to MCU, to configure each well lid biogas interval detection time;
Step S3: by biogas concentration under biogas detecting sensor production wells, and by MCU, down-hole biogas concentration is uploaded to well lid monitoring server;
Step S4: down-hole biogas concentration and setting biogas concentration threshold compare by well lid monitoring server, if exceed or lower than setting biogas concentration threshold, then report to the police and notify managerial personnel;
Step S5: the down-hole biogas concentration that managerial personnel detect according to each well lid and well lid distributing position, notify that corresponding staff processes, after staff has processed, confirmed by mobile terminal, if now, the down-hole biogas concentration that biogas detecting sensor is passed back within the scope of setting biogas concentration threshold, then confirms that process completes, and removes warning; Otherwise, notify that staff processes and do not complete, need process further.
Compared to prior art, the present invention has following beneficial effect:
1, this apparatus structure is simple, and circuit function is easy to realize, and because biogas pick-up unit is arranged at inner cap, protects the safety of biogas pick-up unit and antitheft greatly;
2, this biogas pick-up unit can Real-time Collection down-hole biogas concentration, when biogas concentration abnormality, notifies that staff carries out firedamp drainage, makes staff need not regularly go to discharge biogas, decrease manpower.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is vertical view of the present invention.
Fig. 3 is the A-A view of Fig. 2.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Fig. 5 is the vertical view of inner cap.
Fig. 6 is circuit theory diagrams of the present invention.
Fig. 7 is the inventive method process flow diagram.
In figure: 1-well lid seat ring 10-upper flange 11-pin shaft hole 12-terrace 121-rubber groove 13-L type groove 14-recess 15-lifting hole(eyelet) 16-prizes mouth 17-rubber blanket 2-enclosing cover 21-horizontal coupling shaft 22-spring arm 221-wedge shaped projection 23-covered hole 24-opening 3-inner cap 31-projection 4-waterproof mounting box 41-antenna pedestal 42-antenna 5-electronic tag.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
As shown in figures 1 to 6, a kind of biogas pick-up unit based on Combined well lid of the present invention, comprises well lid seat ring 1, and described well lid seat ring 1 top is provided with the enclosing cover 2 for closed well lid seat ring 1; Inner cap 3 is also provided with in described well lid seat ring 1, described inner cap 3 offers perforate, described perforate is embedded with waterproof mounting box 4, circuit board is provided with in described waterproof mounting box 4, described circuit board be provided with MCU and be connected with this MCU for detecting the biogas detecting sensor of biogas concentration in well, the power supply providing power supply for circuit board and telecommunication circuit, described telecommunication circuit comprises the antenna pedestal 41 for fixed antenna 42 being arranged at described waterproof mounting box 4 top, described enclosing cover 2 is provided with opening 24, so that the communication of antenna 42 with antenna 42 relative position.
As shown in Figure 1-2, described outer covering also is provided with electronic tag 5.
In the present embodiment, described biogas detecting sensor adopts MH-440V/D infrared gas sensor.
As shown in Figure 1, described enclosing cover 2 perimembranous is provided with the horizontal coupling shaft 21 be hinged with well lid seat ring 1, described horizontal coupling shaft 21 is installed in the corresponding pin shaft hole 11 of well lid seat ring 1 inner sidewall upper portion, the inner sidewall upper portion of described well lid seat ring 1 is also provided with the terrace 12 for supporting enclosing cover lower surface, being provided with cross section in described terrace 12 is swallow-tailed rubber groove 121, is provided with the trapezoidal rubber blanket 17 of the withstand voltage corrosion resistant of noise control in described rubber groove; The madial wall of well lid seat ring 1 is circumferentially laid with at least two L-type grooves 13, and described inner cap 3 perimembranous correspondence is provided with the projection 31 of locating that to match with L-type groove 13, has the sagging recess allowing projection 31 sink bottom described L-type groove 13.
On the downside of described enclosing cover 2, perimembranous interval is laid with three horizontal C type spring arms 22, the medial extremity of described horizontal C type spring arm 22 is fixedly connected with enclosing cover 2, its outboard end arranges wedge shaped projection, and on the madial wall of described well lid seat ring, correspondence is provided with the recess 14 coordinating with wedge shaped projection 221 and locate.
As Figure 2-3, the upper flange 10 of described well lid seat ring 1 is laid with at least two for lifting by crane the lifting hole(eyelet) 15 of well lid, described enclosing cover 2 is also provided with covered hole 23 away from the side of horizontal coupling shaft 21, and described upper flange 10 is also provided with sled mouth 16 near the side of covered hole 23.
As shown in Figure 7, present invention also offers a kind of biogas detection alarm method adopting the biogas detection system based on Combined well lid as described above, comprise the steps,
Step S1: the well lid ID that collection is installed on well lid electronic tag everywhere numbers, thus determines each well lid positional information, and is uploaded to well lid monitoring server, the map software on well lid monitoring server is formed well lid distribution plan;
Step S2: well lid monitoring server carries out biogas test initialization parameter configuration according to well lid positional information, and configuration information is sent to MCU, to configure each well lid biogas interval detection time;
Step S3: by biogas concentration under biogas detecting sensor production wells, and by MCU, down-hole biogas concentration is uploaded to well lid monitoring server;
Step S4: down-hole biogas concentration and setting biogas concentration threshold compare by well lid monitoring server, if exceed or lower than setting biogas concentration threshold, then report to the police and notify managerial personnel;
Step S5: the down-hole biogas concentration that managerial personnel detect according to each well lid and well lid distributing position, notify that corresponding staff processes, after staff has processed, confirmed by mobile terminal, if now, the down-hole biogas concentration that biogas detecting sensor is passed back within the scope of setting biogas concentration threshold, then confirms that process completes, and removes warning; Otherwise, notify that staff processes and do not complete, need process further.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (7)
1. based on a biogas detection system for Combined well lid, comprise well lid seat ring, it is characterized in that: described well lid seat top is provided with the enclosing cover for closed well lid seat ring; Also inner cap is provided with in described well lid seat ring, cover in described and offer perforate, described perforate is embedded with waterproof mounting box, circuit board is provided with in described waterproof mounting box, described circuit board be provided with MCU and be connected with this MCU for detecting the biogas detecting sensor of biogas concentration in well, the power supply providing power supply for circuit board and telecommunication circuit, described telecommunication circuit comprises the antenna pedestal for fixed antenna being arranged at described waterproof mounting box top, described enclosing cover and antenna relative position are provided with opening, so that the communication of antenna.
2. the biogas detection system based on Combined well lid according to claim 1, is characterized in that: described outer covering also is provided with electronic tag.
3. the biogas detection system based on Combined well lid according to claim 1, is characterized in that: described biogas detecting sensor adopts MH-440V/D infrared gas sensor.
4. the biogas detection system based on Combined well lid according to claim 1, it is characterized in that: described enclosing cover perimembranous is provided with the horizontal coupling shaft be hinged with well lid seat ring, described horizontal coupling shaft is installed in the corresponding pin shaft hole of well lid seat ring inner sidewall upper portion, the inner sidewall upper portion of described well lid seat ring is also provided with the terrace for supporting enclosing cover lower surface, and being provided with cross section in described terrace is swallow-tailed rubber groove; The madial wall of well lid seat ring is circumferentially laid with at least two L-type grooves, and described inner cap perimembranous correspondence is provided with the projection of locating with L-type fit depressions, and described L-type bottom portion of groove has the sagging recess allowing projection sink.
5. the biogas detection system based on Combined well lid according to claim 1, it is characterized in that: the upper flange of described well lid seat ring is laid with at least two for lifting by crane the lifting hole(eyelet) of well lid, the described outer side covered away from horizontal coupling shaft is also provided with covered hole, and described upper flange is also provided with sled mouth near the side of covered hole.
6. the biogas detection system based on Combined well lid according to claim 1, it is characterized in that: on the downside of described enclosing cover, perimembranous interval is laid with three horizontal C type spring arms, the medial extremity of described horizontal C type spring arm is fixedly connected with enclosing cover, its outboard end arranges wedge shaped projection, and on the madial wall of described well lid seat ring, correspondence is provided with the recess coordinating with wedge shaped projection and locate.
7. adopt as claimed in claim 2 based on a biogas detection alarm method for the biogas detection system of Combined well lid, it is characterized in that: comprise the steps,
Step S1: the well lid ID that collection is installed on well lid electronic tag everywhere numbers, thus determines each well lid positional information, and is uploaded to well lid monitoring server, the map software on well lid monitoring server is formed well lid distribution plan;
Step S2: well lid monitoring server carries out biogas test initialization parameter configuration according to well lid positional information, and configuration information is sent to MCU, to configure each well lid biogas interval detection time;
Step S3: by biogas concentration under biogas detecting sensor production wells, and by MCU, down-hole biogas concentration is uploaded to well lid monitoring server;
Step S4: down-hole biogas concentration and setting biogas concentration threshold compare by well lid monitoring server, if exceed or lower than setting biogas concentration threshold, then report to the police and notify managerial personnel;
Step S5: the down-hole biogas concentration that managerial personnel detect according to each well lid and well lid distributing position, notify that corresponding staff processes, after staff has processed, confirmed by mobile terminal, if now, the down-hole biogas concentration that biogas detecting sensor is passed back within the scope of setting biogas concentration threshold, then confirms that process completes, and removes warning; Otherwise, notify that staff processes and do not complete, need process further.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709613.2A CN104408882B (en) | 2014-12-01 | 2014-12-01 | Methane detecting system based on combined manhole cover and detection alarming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709613.2A CN104408882B (en) | 2014-12-01 | 2014-12-01 | Methane detecting system based on combined manhole cover and detection alarming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104408882A true CN104408882A (en) | 2015-03-11 |
| CN104408882B CN104408882B (en) | 2017-01-18 |
Family
ID=52646508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410709613.2A Expired - Fee Related CN104408882B (en) | 2014-12-01 | 2014-12-01 | Methane detecting system based on combined manhole cover and detection alarming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104408882B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105389955A (en) * | 2015-11-28 | 2016-03-09 | 马磊 | Sewer biogas detector of residential district |
| CN106277686A (en) * | 2016-08-15 | 2017-01-04 | 湘潭大学 | The safety device that a kind of anaerobic tank uses |
| CN106450670A (en) * | 2016-12-19 | 2017-02-22 | 福建三鑫隆信息技术开发股份有限公司 | Antenna mounting and protecting structure on housing washer |
| EP3206028A1 (en) * | 2016-02-12 | 2017-08-16 | Jui-Chi Fu | Environmental monitoring pipeline closure and wireless positioning and warning system thereof |
| CN108885820A (en) * | 2016-02-17 | 2018-11-23 | 霍尼韦尔国际公司 | To be arranged automatically the position of detector via short-range radio communications |
| CN111855908A (en) * | 2020-07-27 | 2020-10-30 | 上海申欣优达环保科技有限公司 | Gas detection device and online monitoring system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10338942A (en) * | 1997-06-06 | 1998-12-22 | Hinode Suido Kiki Kk | Heat-insulation device for cove of underground structure |
| CN2853908Y (en) * | 2005-09-30 | 2007-01-03 | 保定恒沣铸造有限公司 | Anti-theft manhole cover with spring |
| CN102436240A (en) * | 2011-11-08 | 2012-05-02 | 山东省科学院自动化研究所 | Digitized information system and method for remotely and comprehensively monitoring urban inspection wells |
| KR101199647B1 (en) * | 2010-01-20 | 2012-11-08 | 미강건철주식회사 | manhole |
| CN202904858U (en) * | 2012-10-30 | 2013-04-24 | 深圳市首航通信有限公司 | Methane detection system of manhole cover |
| CN203535770U (en) * | 2013-09-22 | 2014-04-09 | 福建师范大学 | Remote inspection shaft monitoring system based on IoT (Internet of Things) technology |
| CN103938966A (en) * | 2013-01-21 | 2014-07-23 | 保定畅途金属制品有限公司 | Hinge structure for road well tool |
| CN204242356U (en) * | 2014-12-01 | 2015-04-01 | 福建三鑫隆新材料技术开发股份有限公司 | Based on the biogas pick-up unit of Combined well lid |
-
2014
- 2014-12-01 CN CN201410709613.2A patent/CN104408882B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10338942A (en) * | 1997-06-06 | 1998-12-22 | Hinode Suido Kiki Kk | Heat-insulation device for cove of underground structure |
| CN2853908Y (en) * | 2005-09-30 | 2007-01-03 | 保定恒沣铸造有限公司 | Anti-theft manhole cover with spring |
| KR101199647B1 (en) * | 2010-01-20 | 2012-11-08 | 미강건철주식회사 | manhole |
| CN102436240A (en) * | 2011-11-08 | 2012-05-02 | 山东省科学院自动化研究所 | Digitized information system and method for remotely and comprehensively monitoring urban inspection wells |
| CN202904858U (en) * | 2012-10-30 | 2013-04-24 | 深圳市首航通信有限公司 | Methane detection system of manhole cover |
| CN103938966A (en) * | 2013-01-21 | 2014-07-23 | 保定畅途金属制品有限公司 | Hinge structure for road well tool |
| CN203535770U (en) * | 2013-09-22 | 2014-04-09 | 福建师范大学 | Remote inspection shaft monitoring system based on IoT (Internet of Things) technology |
| CN204242356U (en) * | 2014-12-01 | 2015-04-01 | 福建三鑫隆新材料技术开发股份有限公司 | Based on the biogas pick-up unit of Combined well lid |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105389955A (en) * | 2015-11-28 | 2016-03-09 | 马磊 | Sewer biogas detector of residential district |
| EP3206028A1 (en) * | 2016-02-12 | 2017-08-16 | Jui-Chi Fu | Environmental monitoring pipeline closure and wireless positioning and warning system thereof |
| CN108885820A (en) * | 2016-02-17 | 2018-11-23 | 霍尼韦尔国际公司 | To be arranged automatically the position of detector via short-range radio communications |
| CN106277686A (en) * | 2016-08-15 | 2017-01-04 | 湘潭大学 | The safety device that a kind of anaerobic tank uses |
| CN106450670A (en) * | 2016-12-19 | 2017-02-22 | 福建三鑫隆信息技术开发股份有限公司 | Antenna mounting and protecting structure on housing washer |
| CN111855908A (en) * | 2020-07-27 | 2020-10-30 | 上海申欣优达环保科技有限公司 | Gas detection device and online monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104408882B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104408882B (en) | Methane detecting system based on combined manhole cover and detection alarming method | |
| CN104480968B (en) | Well lid messaging switch warning system and alarm method | |
| CN202168102U (en) | Centralized monitoring system of cable inspection wells | |
| CN205353674U (en) | Well lid control system | |
| CN205483181U (en) | Water resource well bit detector | |
| CN204241130U (en) | Based on the temperature-detecting device of Combined well lid | |
| CN204343336U (en) | Well lid messaging switch warning device | |
| CN104464134B (en) | Inclined well lid alarm system and alarm method | |
| CN204242356U (en) | Based on the biogas pick-up unit of Combined well lid | |
| CN204046112U (en) | Electric substation's secondary cable threading structure | |
| CN104483037A (en) | Temperature detection system and detection alarming method based on combined well lid | |
| CN205400742U (en) | Major diameter shield tunnel utility tunnel with highway tunnel combination | |
| CN203950193U (en) | A kind of groundwater monitoring station | |
| CN204570741U (en) | A kind of well lid | |
| CN204242320U (en) | Tilting well lid warning device | |
| CN206194077U (en) | High tension transmission line line Tower is with buryying formula ground monitoring device | |
| CN206619707U (en) | Power grounding pile | |
| CN205382513U (en) | Intelligent security protects well lid | |
| CN207749578U (en) | Underground hydrant outside a kind of hydraulically extensible room | |
| CN203808111U (en) | Reinforced concrete prefabricated inspection chamber for underground pipe networks | |
| CN206844156U (en) | A kind of inspection shaft anti-fall device | |
| CN206873499U (en) | A kind of anti-flooding control system of well lid | |
| CN205001862U (en) | Oil gas pipeline automatic drainage monitored control system in culvert pipe | |
| CN219953446U (en) | Intelligent linkage voice alarm system for initial supporting force of hydraulic support of coal face | |
| CN203008110U (en) | Wellhead structure of concealed drainage well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 350016, Fujian Province, Fuzhou Province, Mawei Town, Changan Road, No. 18, building 3, East Applicant after: The prosperous grand infotech exploitation incorporated company in Fujian three Address before: 350016, Fujian Province, Fuzhou Province, Mawei Town, Changan Road, No. 18, building 3, East Applicant before: Fujian Sanxinlong New Material Technology Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: FUJIAN SANXINLONG NEW MATERIAL TECHNOLOGY DEVELOPMENT CO., LTD. TO: FUJIAN SANXINLONG INFORMATION TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20191201 |