CN108843309A - Drilling and repairing well liquid level monitor - Google Patents
Drilling and repairing well liquid level monitor Download PDFInfo
- Publication number
- CN108843309A CN108843309A CN201810760460.2A CN201810760460A CN108843309A CN 108843309 A CN108843309 A CN 108843309A CN 201810760460 A CN201810760460 A CN 201810760460A CN 108843309 A CN108843309 A CN 108843309A
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- Prior art keywords
- valve
- valve body
- sealing shroud
- liquid level
- drilling
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- 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.)
- Pending
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- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000005553 drilling Methods 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 7
- 230000013011 mating Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 43
- 239000007789 gas Substances 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000012806 monitoring device Methods 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention belongs to well fluid level measuring device field more particularly to a kind of drilling and repairing well liquid level monitors, including wellhead connector, explosion-proof control box and nitrogen gas tank.The structure of the solenoid valve includes electromagnetic coil, valve rod, valve plate, valve component and valve body, valve rod pumps under the driving of electromagnetic coil, valve plate is connected to the lower end of valve rod by bolt, valve component is fixedly mounted in valve body, the lower end of the valve rod is equipped with expanded diameter section, the diameter of expanded diameter section is matched with the internal diameter of valve body, is provided with wear ring in the mating surface of valve body in expanded diameter section.The present invention is New Generation of Intelligent, the automated drilling test device of the actual demand according to work on the spot and independent research, have the characteristics that full-featured, structure is simple, easy for installation, not only real-time monitoring can be carried out to liquid level in well during well workover, and quickly and efficiently can move and install.
Description
Technical field
The invention belongs to well fluid level measuring device field more particularly to a kind of drilling and repairing well liquid level monitors.
Background technique
In oil field during drilling and repairing well, need to carry out dynamic monitoring, monitoring to the liquid level in well using liquid surface measuring device
Principle be：Sound wave is first inputted into well, then measurement receives the time difference of close echo, then with according to acoustic velocity measutement liquid level position
It sets.Currently, there are an obvious shortcomings for existing hydrodynamic face test equipment：Solenoid valve for controlling sound wave transmission is hydrodynamic face
The important component of monitoring device is limited by solenoid valve operating frequency, and existing hydrodynamic face test equipment can only measure depth not
Hydrodynamic face less than 200 meters, hydrodynamic face of the depth less than 200 meters is then unable to measure, therefore, it is necessary to design a kind of operating frequency
Higher solenoid valve, to solve the above problems.In addition, the structure of existing hydrodynamic face monitoring device is more complicated, installs and make
With very inconvenient.
Summary of the invention
The present invention provides a kind of drilling and repairing well liquid level monitor, to solve the problems mentioned in the above background technology.
Technical problem solved by the invention is realized using following technical scheme：
The present invention includes wellhead connector, explosion-proof control box and nitrogen gas tank, is provided with sound on the wellhead connector
Sensor is provided with solenoid valve and surge tank in the explosion-proof control box, the gas in nitrogen gas tank under the guidance of pipeline according to
It is secondary via underground is transferred to after surge tank, solenoid valve, wellhead connector, the front and rear sides of the solenoid valve are each provided with one
Pressure sensor, be additionally provided in the explosion-proof control box RTU controller for being controlled each sensor,
Industrial control host, and for the battery for the drilling and repairing well liquid level monitor power supply, the interior setting of the explosion-proof control box
There is WIFI module, WIFI module is connected in industrial control host, and the outside of explosion-proof control box is provided with antenna, and antenna is connected to WIFI
In module, the arrival end of the solenoid valve and outlet end are each provided with a pressure sensor；
The structure of the solenoid valve includes electromagnetic coil, valve rod, valve plate, valve component and valve body, and valve rod is in electromagnetic wire
It pumps under the driving of circle, valve plate is connected to the lower end of valve rod by bolt, and valve component is fixedly mounted on valve body
It is interior；
The lower end of the valve rod is equipped with expanded diameter section, and the diameter of expanded diameter section is matched with the internal diameter of valve body, big straight
On diameter section be provided with wear ring in the mating surface of valve body, be provided in expanded diameter section for being connected to expanded diameter section
The through-hole in lower two sides space, the valve component include support spring, left sealing shroud and right sealing shroud, and left sealing shroud and the right side are close
Big envelope is separately positioned on the two sides of valve plate and is against on valve plate, on left sealing shroud and right sealing shroud be all provided on the contact surface of valve plate
It is equipped with end face sealing ring, wherein left sealing shroud passes through support spring floating mount in valve body, right sealing shroud is fixedly mounted on valve
In vivo, the center of left sealing shroud and right sealing shroud is provided with airflow channel, and the diameter of airflow channel is not more than 3mm, the valve
The valve opening equal with the diameter of airflow channel is provided on plate；The valve body includes main valve body and pressure cap, and main valve body is by steel pipe
It is welded, pressure cap is threadedly attached on main valve body and encapsulates the support spring, left sealing shroud and right sealing shroud
In main valve body.
The wear ring is mixed by polytetrafluoroethylene (PTFE) and copper powder.The support spring is waveform spring A.It is described
Explosion-proof control box on the outside of be additionally provided with four-in-one gas detecting instrument, the data-interface on four-in-one gas detecting instrument passes through number
It is connect according to line with the industrial control host.Waveform spring B is correspondingly arranged below the valve plate, after solenoid valve is closed, valve
The lower end of plate is against on the waveform spring B.
Beneficial effects of the present invention are：
1, the present invention is New Generation of Intelligent, the automated drilling test of actual demand according to work on the spot and independent research
Device has the characteristics that full-featured, structure is simple, easy for installation, can not only carry out during well workover to liquid level in well
Real-time monitoring, and quickly and efficiently can move and install.
2, the present invention improves existing solenoid valve, by shortening the actuating length of solenoid valve, optimizes valve rod knot
Structure reduces the means such as the resistance in valve rod action process, effectively increases the operating frequency of solenoid valve, switch solenoid valve once
The shortest time of movement can reach 0.01 second, thus by the minimum-depth that hydrodynamic face monitoring device is capable of measuring narrow down to 40 meters with
It is interior, it is greatly expanded the adaptability of hydrodynamic face monitoring device.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of solenoid valve；
Fig. 3 is the structural schematic diagram of valve body.
In figure：1- wellhead connector, 2- explosion-proof control box, 3- pressure sensor, 4- solenoid valve, 5- surge tank, 6- nitrogen
Tank, 7- antenna, 8- four-in-one gas detecting instrument, 9- sound transducer, 10- pipeline, 11- electromagnetic coil, 12- main valve body, 13- pressure
Cap, the left sealing shroud of 14- waveform spring A, 15-, 16- valve opening, the right sealing shroud of 17-, 18- valve plate, 19- bolt, 20- through-hole, 21- valve
Bar, 22- wear ring, 23- expanded diameter section, 24- waveform spring B, 25- airflow channel, 26- end face sealing ring.
Specific embodiment
The present invention is described further below in conjunction with attached drawing：
The present invention includes wellhead connector 1, explosion-proof control box 2 and nitrogen gas tank 6, is provided on the wellhead connector 1
Sound transducer 9 is provided with solenoid valve 4 and surge tank 5 in the explosion-proof control box 2, and the gas in nitrogen gas tank 6 is in pipeline 10
Guidance under successively via being transferred to underground, the front and back two of the solenoid valve 4 after surge tank 5, solenoid valve 4, wellhead connector 1
Side is each provided with a pressure sensor 3, is additionally provided in the explosion-proof control box 2 for each sensor progress
The RTU controller of control, industrial control host, and for the battery for the drilling and repairing well liquid level monitor power supply.The above are
Already existing structure in the prior art, details are not described herein.
It is provided with WIFI module in the explosion-proof control box 2, WIFI module is connected in industrial control host, explosion-proof control box
2 outside is provided with antenna 7, and antenna 7 is connected in WIFI module.In use, (hander can be flat mating setting hander
The function such as plate computer or mobile phone hardware).After 8 data acquisition of each sensor and four-in-one gas detecting instrument, pass through WIFI
The wireless communication function of module and antenna uploads to hander, completes the storage of fluid level data by hander, automatically calculates, leads
Out, the functions such as the inquiry of historical data, liquid level filtering setting, it is easy to operate simple without manually performing operational process, safely may be used
It leans on, while can support to carry out equipment access when more terminal devices.
The arrival end of the solenoid valve 4 and outlet end are each provided with a pressure sensor 3, are respectively used in monitoring well
Pressure in pressure and surge tank 5, so that the working condition to sonification system detects.
The structure of the solenoid valve 4 includes electromagnetic coil 11, valve rod 21, valve plate 18, valve component and valve body, valve rod 21
It pumps under the driving of electromagnetic coil 11, valve plate 18 is connected to the lower end of valve rod 21, valve seat group by bolt 19
Part is fixedly mounted in valve body.The spool in existing solenoid valve 4 is set valve shuttered structure by the present invention, with prior art phase
Than, the structure of solenoid valve is simplified, so that making the processing cost of solenoid valve significantly reduces, meanwhile, can be had using valve shuttered structure
Effect reduces the switch resistance of solenoid valve, to improve the speed of switch valve.
The lower end of the valve rod 21 is equipped with expanded diameter section 23, the diameter of expanded diameter section 23 and the internal diameter of valve body
Match, expanded diameter section 23 can carry out righting to the movement of valve rod 21, keep the movement of valve rod 21 more stable.
In expanded diameter section 23 with wear ring 22 is provided in the mating surface of valve body, wear ring 22 plays a supportive role, wear-resisting
After ring 22 is worn, wear ring 22 is replaced.
Since the movement speed of valve rod 21 is very fast, movement moment can generate apparent air drag, to influence valve rod
21 movement speed need to be provided with for being connected to expanded diameter section 23 in expanded diameter section 23 in order to solve this problem
The through-hole 20 in upper and lower two sides space is acted on by the connection of through-hole 20, can make the air pressure balance of about 23 two sides of expanded diameter section,
To effectively eliminate air drag, the movement speed of valve rod 21 is improved.
The valve component includes support spring, left sealing shroud 15 and right sealing shroud 17, left sealing shroud 15 and right sealing
Set 17 on end face sealing ring 26 is provided on the contact surface of valve plate 18, left sealing shroud 15 and right sealing shroud 17 are separately positioned on
The two sides of valve plate 18 are simultaneously against the sealing realized on valve plate 18 to valve plate 18.Wherein left sealing shroud 15 is floated by support spring
It is mounted in valve body, right sealing shroud 17 is fixedly mounted in valve body.
The latus rectum of existing solenoid valve 4 wants 4 latus rectum of solenoid valve far beyond in technical solutions according to the invention
It asks, and latus rectum is bigger, required stroke is longer when switch electromagnetic valve 4, and the required time is also longer.But in the present invention, lead to
Airflow channel 25 of the center setting diameter no more than 3mm in left sealing shroud 15 and right sealing shroud 17 is crossed, it can be by the logical of solenoid valve 4
Diameter reduces, and so as to shorten the actuation time of solenoid valve, achievees the purpose that improve 4 movement speed of solenoid valve.
The valve opening 16 equal with the diameter of airflow channel 25, valve opening 16 and airflow channel 25 are provided on the valve plate 18
To just afterwards be valve opening state.No matter solenoid valve 4 is on or off, and valve plate 18 is clipped in left sealing shroud 15 always
Between right sealing shroud 17, it is more smooth during switch valve that this structure makes valve plate 18, to further decrease switch valve
Resistance.
The valve body includes main valve body 12 and pressure cap 13, and main valve body 12 is formed by steel-pipe welding, and is cast in the prior art
Valve body is made to compare, by steel-pipe welding at valve body production cost it is cheaper, and machining accuracy is more easier to guarantee.Pressure cap 13
It is threadedly attached on main valve body 12 and the support spring, left sealing shroud 15 and right sealing shroud 17 is encapsulated in main valve body
In 12.
The wear ring 22 is mixed by polytetrafluoroethylene (PTFE) and copper powder, this is conventional structure, is repeated no more.
The support spring is waveform spring A14, and waveform spring A14 can provide bigger in lesser deformation range
Support force, so as to improve sealing effect.
The outside of the explosion-proof control box 2 is additionally provided with four-in-one gas detecting instrument 8, on four-in-one gas detecting instrument 8
Data-interface connect with the industrial control host by data line, can be let out in pernicious gas by four-in-one gas detecting instrument 8
It alarms when dew, guarantees production safety.
The lower section of the valve plate 18 is correspondingly arranged on waveform spring B24, and after solenoid valve 4 is closed, the lower end of valve plate 18 is supported
On the waveform spring B24.Waveform spring B24 can be that valve plate 18 provides buffering in the second half of valve plate downlink process, from
And achieve the purpose that reduce vibration, meanwhile, waveform spring B24 can be that valve plate 18 overcomes self inertia in the moment of 18 uplink of valve plate
Assistance force is provided, to further increase the movement speed of valve opening, improves the operating frequency of solenoid valve 4.
The following are the models of component part each in technical solutions according to the invention：
| Serial number | Device name | Model | Business Name |
| 1 | Wellhead connector | TSLJQ | Grand celebration Jin Hai is machined factory |
| 2 | Explosion-proof control box | BJX | Zhejiang Bei Tong explosion-proof electric apparatus Co., Ltd |
| 3 | Battery | LCPA1224-12 | Shenyang Cheng Gaozhonghe Science and Technology Ltd. |
| 4 | Pressure sensor | SXYL-12 | Shanxi crack Hua Kong finite instrument company |
| 5 | Sound transducer | TSWIQ-1 | Grand celebration Tuo Shi Information Technology Co., Ltd |
| 6 | RTU controller | TSRTU-2 | Grand celebration Tuo Shi Information Technology Co., Ltd |
| 7 | Industrial control host | DBOX-C2T | De Taike Electronic Science and Technology Co., Ltd. of Shenzhen |
| 8 | WIFI module | ALK-TS1 | Jing Yi Science and Technology Ltd. of Shenzhen |
| 9 | Nitrogen cylinder | THG-4L | Shandong Tian Hai high-pressure bottle Co., Ltd |
| 10 | Four-in-one gas detecting instrument | MOT-500-WL4 | Cole's promise Electronic Science and Technology Co., Ltd. of Shenzhen |
The present invention is New Generation of Intelligent, the automated drilling test dress of the actual demand according to work on the spot and independent research
It sets, has the characteristics that full-featured, structure is simple, easy for installation, liquid level in well can not only be carried out during well workover real
When monitor, and quickly and efficiently can move and install.Meanwhile the present invention improves existing solenoid valve 4, passes through shortening
The actuating length of solenoid valve 4 optimizes valve core structure, reduces the means such as the resistance in 21 action process of valve rod, effectively increases electricity
The operating frequency of magnet valve 4 can reach the shortest time of 4 switch motions of solenoid valve 0.01 second, thus by dynamic liquid level monitoring
The minimum-depth that equipment is capable of measuring narrows down within 40 meters, is greatly expanded the adaptability of hydrodynamic face monitoring device.
Claims (5)
1. a kind of drilling and repairing well liquid level monitor, including wellhead connector (1), explosion-proof control box (2) and nitrogen gas tank (6), described
It is provided on wellhead connector (1) sound transducer (9), solenoid valve (4) and buffering is provided in the explosion-proof control box (2)
Tank (5), the gas in nitrogen gas tank (6) are successively connected via surge tank (5), solenoid valve (4), well head under the guidance of pipeline (10)
Underground is transferred to after device (1), the front and rear sides of the solenoid valve (4) are each provided with a pressure sensor (3), and described is anti-
The interior RTU controller being additionally provided with for being controlled each sensor of quick-fried control cabinet (2), industrial control host, Yi Jiyong
In the battery for the drilling and repairing well liquid level monitor power supply, it is characterised in that：It is provided in the explosion-proof control box (2)
WIFI module, WIFI module are connected in industrial control host, and the outside of explosion-proof control box (2) is provided with antenna (7), and antenna (7) is even
It connects in WIFI module, the arrival end of the solenoid valve (4) and outlet end are each provided with a pressure sensor (3)；
The structure of the solenoid valve (4) includes electromagnetic coil (11), valve rod (21), valve plate (18), valve component and valve body, valve
Bar (21) pumps under the driving of electromagnetic coil (11), and valve plate (18) is connected to valve rod (21) by bolt (19)
Lower end, valve component is fixedly mounted in valve body；
The lower end of the valve rod (21) is equipped with expanded diameter section (23), the diameter of expanded diameter section (23) and the internal diameter of valve body
Match, in expanded diameter section (23) be provided in the mating surface of valve body wear ring (22), expanded diameter section (23) in be provided with
For being connected to the through-hole (20) in expanded diameter section (23) two sides space up and down, the valve component includes support spring, Zuo Mi
Big envelope (15) and right sealing shroud (17), left sealing shroud (15) and right sealing shroud (17) are separately positioned on the two sides of valve plate (18) and support
On valve plate (18), end face seal is provided with on the contact surface of valve plate (18) on left sealing shroud (15) and right sealing shroud (17)
Ring (26), wherein left sealing shroud (15) passes through support spring floating mount in valve body, right sealing shroud (17) is fixedly mounted on valve
In vivo, the center of left sealing shroud (15) and right sealing shroud (17) is provided with airflow channel (25), and the diameter of airflow channel (25) is not
Greater than 3mm, the valve opening (16) equal with the diameter of airflow channel (25) is provided on the valve plate (18)；The valve body packet
Main valve body (12) and pressure cap (13) are included, main valve body (12) is formed by steel-pipe welding, and pressure cap (13) is threadedly attached in main valve body
(12) it is encapsulated in main valve body (12) on and by the support spring, left sealing shroud (15) and right sealing shroud (17).
2. a kind of drilling and repairing well liquid level monitor according to claim 1, it is characterised in that：The wear ring (22) is by gathering
Tetrafluoroethene and copper powder mix.
3. a kind of drilling and repairing well liquid level monitor according to claim 1, it is characterised in that：The support spring is waveform
Spring A (14).
4. a kind of drilling and repairing well liquid level monitor according to claim 1, it is characterised in that：The explosion-proof control box (2)
Outside be additionally provided with four-in-one gas detecting instrument (8), the data-interface on four-in-one gas detecting instrument (8) by data line with
The industrial control host connection.
5. a kind of drilling and repairing well liquid level monitor according to claim 1, it is characterised in that：The lower section of the valve plate (18)
It is correspondingly arranged on waveform spring B (24), after solenoid valve (4) is closed, the lower end of valve plate (18) is against the waveform spring B (24)
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810760460.2A CN108843309A (en) | 2018-07-12 | 2018-07-12 | Drilling and repairing well liquid level monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810760460.2A CN108843309A (en) | 2018-07-12 | 2018-07-12 | Drilling and repairing well liquid level monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108843309A true CN108843309A (en) | 2018-11-20 |
Family
ID=64197042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810760460.2A Pending CN108843309A (en) | 2018-07-12 | 2018-07-12 | Drilling and repairing well liquid level monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843309A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH694279A5 (en) * | 2001-03-13 | 2004-10-29 | Parker Lucifer Sa | Electromagnetic fluid control valve has valve plate connected to solenoid shaft by ball joint for aligning action |
| CN101586737A (en) * | 2009-06-11 | 2009-11-25 | 刘子良 | Self-operated emergency cutting method of fluid pipe and self-operated flat-plate emergency cut-off valve |
| CN102022108A (en) * | 2010-07-27 | 2011-04-20 | 岳强 | Automatic infrasonic wave non-pressure oil well liquid level monitoring instrument |
| CN106286894A (en) * | 2015-05-21 | 2017-01-04 | 浙江三花股份有限公司 | Three-way magnetic valve |
| CN206017749U (en) * | 2016-08-29 | 2017-03-15 | 开维喜阀门集团有限公司 | A kind of solenoid vacuum valve |
-
2018
- 2018-07-12 CN CN201810760460.2A patent/CN108843309A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH694279A5 (en) * | 2001-03-13 | 2004-10-29 | Parker Lucifer Sa | Electromagnetic fluid control valve has valve plate connected to solenoid shaft by ball joint for aligning action |
| CN101586737A (en) * | 2009-06-11 | 2009-11-25 | 刘子良 | Self-operated emergency cutting method of fluid pipe and self-operated flat-plate emergency cut-off valve |
| CN102022108A (en) * | 2010-07-27 | 2011-04-20 | 岳强 | Automatic infrasonic wave non-pressure oil well liquid level monitoring instrument |
| CN106286894A (en) * | 2015-05-21 | 2017-01-04 | 浙江三花股份有限公司 | Three-way magnetic valve |
| CN206017749U (en) * | 2016-08-29 | 2017-03-15 | 开维喜阀门集团有限公司 | A kind of solenoid vacuum valve |
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