CN106289453A - Liquid level detection device for gas station's leak detection - Google Patents
Liquid level detection device for gas station's leak detection Download PDFInfo
- Publication number
- CN106289453A CN106289453A CN201610697653.9A CN201610697653A CN106289453A CN 106289453 A CN106289453 A CN 106289453A CN 201610697653 A CN201610697653 A CN 201610697653A CN 106289453 A CN106289453 A CN 106289453A
- Authority
- CN
- China
- Prior art keywords
- hole
- liquid level
- detection device
- gas station
- fixture
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims description 9
- 241000237970 Conus <genus> Species 0.000 claims description 8
- 238000005422 blasting Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of liquid level detection device for gas station's leak detection, including: there is the body of rod accommodating chamber；It is positioned close to described body of rod bottom surface, at least one fuel feed hole connected with the external world in described receiving chamber；It is arranged on the fixture in described receiving chamber, described fixture includes blind round hole and two optical transport through holes, the opening of described blind round hole is positioned at described fixture bottom surface, one end of described optical transport through hole is positioned at described fixture end face, and the other end of described optical transport through hole is positioned at described blind round hole bottom surface；It is arranged in described receiving chamber and the lens of the described blind round hole of one end embedding；It is arranged on the seal plug plug member of described body of rod end face and is arranged on the bottom end cover of described body of rod bottom surface；It is arranged on the sensor circuit plate between described seal plug plug member and described fixture.The liquid level detection device that the present invention provides, based on infrared liquid recognition principle detection double-layer tank or the leakage situation of double-skin duct, accuracy of detection is high.
Description
Technical field
The present invention relates to dielectric leakage detection technique field, be specifically related to a kind of liquid level for gas station's leak detection and examine
Survey device.
Background technology
Along with perfecting and the enhancing of national environmental consciousness, in newly-built and reorganization and expansion oiling of national environmental protection Legal System
Start in standing to use two-compartment oil tank and double-skin duct the oldest more manyly.Two-compartment oil tank refers to by inner canister and inner canister is coated with completely
The oil storage tank that outer tank is constituted, has annular clearance space, is used for detecting double-deck integrity, to reach between inner and outer tank
To the purpose preventing oil leak；Double-skin duct refers to the pipeline being made up of inner tube and the outer tube that inner tube is coated with completely, inner tube
And there is between outer tube annular clearance space.The Leak Detection of two-compartment oil tank or double-skin duct refers to use directly or indirectly
Method by the detection of the vacuum in annular clearance space, pressure, oil gas or liquid etc. is judged oil tank or pipe
Whether road leaks, and leakage accident once occur in oil tank or pipeline, send alarm immediately.
Sensor method is to be come by the media variations in detection two-compartment oil tank or double-skin duct annular clearance space
Monitoring tank body or the integrity of pipeline, to realize in tank or the interior liquid storage face of pipe is appeared below the detection of seepage.Generally do
Method is to arrange the detection standpipe connected with clearance space on the longitudinal centre line at oil tank or pipeline top, under detection standpipe
Portion arranges liquid level detection device.As the crucial detection device of sensor method, the precision of liquid level detection device and reliability
Directly affect Leak Detection result accuracy.
Summary of the invention
The technical problem to be solved is to provide a kind of infrared liquid recognition principle, the most reliable and by outward of using
The liquid level detection device that boundary's interference is little.
The present invention is achieved through the following technical solutions:
A kind of liquid level detection device for gas station's leak detection, including: there is the body of rod accommodating chamber；It is positioned close to described
Body of rod bottom surface, for by described receiving chamber and extraneous at least one fuel feed hole connected；Be arranged in described receiving chamber is fixing
Part, described fixture includes blind round hole and two optical transport through holes, and the opening of described blind round hole is positioned at described fixture
Bottom surface, one end of described optical transport through hole is positioned at described fixture end face, and the other end of described optical transport through hole is positioned at described circle
Shape blind hole bottom surface；It is arranged in described receiving chamber and the lens of the described blind round hole of one end embedding；It is arranged on described body of rod end face
Seal plug plug member and be arranged on the bottom end cover of described body of rod bottom surface；Be arranged on described seal plug plug member and described fixture it
Between sensor circuit plate.
The liquid level detection device that the present invention provides, based on infrared liquid recognition principle detection double-layer tank or double-skin duct
Leakage situation, accuracy of detection is high.When there is not leakage in double-layer tank or double-skin duct, the infrared illuminator on sensor circuit plate
The infrared light that part sends is irradiated into lens through an optical transport through hole, and infrared light is reflected by lens, and reflection light is through another
Optical transport through hole returns to sensor circuit plate, the light-sensitive device on sensor circuit plate be received；When double-layer tank or bimetallic tube
When road occurs leakage, leakage liquid (water or oil) enters through fuel feed hole and accommodates chamber, the infrared light-emitting device on sensor circuit plate
The infrared light sent is irradiated into lens through an optical transport through hole, then is refracted in the liquid in receiving chamber, on sensor circuit plate
Light-sensitive device can not receive or can only receive a small amount of Infrared, judges whether sounding is let out for double-layer tank or double-skin duct with this
Leakage.The liquid level detection device that the present invention provides uses enclosed construction, and sensor circuit plate is placed in airtight receiving intracavity, uses letter
Single structure realizes good sealing, and reliability is high, little by external interference.
Optionally, the quantity of described fuel feed hole is at least two, and each fuel feed hole is symmetrically distributed in the same of the described body of rod
Horizontal level.By arranging at least two fuel feed hole, when double-layer tank or double-skin duct occur leakage, the liquid of leakage can
The most deeply accommodate chamber, thus improve the response speed of sensor.
Optionally, described fixture is plastic parts.By fixture is set to plastic parts, utilize plastic parts that bullet can occur
The performance of property deformation, directly can be stuck in receiving intracavity, it is not necessary to use unnecessary fixing means again by fixture.
Optionally, the axis of described blind round hole and the dead in line of described fixture.
Optionally, the axis of described optical transport through hole is parallel with the axis of described fixture, and two optical transport through hole phases
For described fixture axis axisymmetricly.
Optionally, described lens include cylindrical portion and conus portion, the floor space of described cylindrical portion and the end of described conus portion
Area equation；One end of described cylindrical portion embeds described blind round hole, and the other end of described cylindrical portion connects described conus portion
Bottom surface.
Optionally, the surface of described lens 14 is through blasting treatment.
Optionally, described seal plug plug member is epoxy resin end cap.
Optionally, described bottom end cover is the plastic cement capping with at least one arc notch.After leakage repair, amass at probe
In liquid can be gone out by described arc notch automatic-discharging.
Optionally, the space between described sensor circuit plate and described body of rod inner surface is filled with silicone rubber.By filling
Silicone rubber, can prevent sensor circuit plate from accommodating in chamber the components and parts shaken and damage on circuit board, thus carry further
The reliability of high level detection device.
The present invention compared with prior art, has such advantages as and beneficial effect:
The liquid level detection device for gas station's leak detection that the present invention provides, based on infrared liquid recognition principle detection bilayer
Tank or the leakage situation of double-skin duct, accuracy of detection is high.It uses enclosed construction, and sensor circuit plate is placed in airtight receiving
Intracavity, uses simple structure to realize good sealing, thus improves reliability and interference free performance.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the liquid level detection device of the embodiment of the present invention；
Fig. 2 is the sectional view of the fixture of the embodiment of the present invention；
Fig. 3 is the upward view of the fixture of the embodiment of the present invention；
Fig. 4 is the structural representation of the lens of the embodiment of the present invention；
Fig. 5 is the structural representation of the bottom end cover of the embodiment of the present invention.
The parts title of labelling and correspondence in accompanying drawing:
The 11-body of rod, 12-fuel feed hole, 13-fixture, 14-lens, 15-seal plug plug member, 16-bottom end cover, 17-sensor circuit
Plate, 21-blind round hole, 22-optical transport through hole, 23-cylindrical portion, 24-conus portion.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
Fig. 1 is the structural representation of the liquid level detection device for gas station's leak detection of the present embodiment, described liquid level
Detection device, for detecting the leakage situation of double-layer tank or double-skin duct, including the body of rod 11, at least one fuel feed hole 12, is fixed
Part 13, lens 14, seal plug plug member 15, bottom end cover 16 and sensor circuit plate 17.
Specifically, the described body of rod 11 is internal has receiving chamber.In the present embodiment, described receiving chamber is cylindrical.Described
At least one fuel feed hole 12 is positioned close to the axle in the described body of rod 11 bottom surface, the axis of the most each fuel feed hole 12 and described receiving chamber
Line is vertical, for being connected with the external world in described receiving chamber.The size of each fuel feed hole 12 and each fuel feed hole 12 are to described bar
The distance of body 11 bottom surface can be configured according to the actual requirements, such as, can arrange the minimum point of each fuel feed hole 12 to described bar
The distance of body 11 bottom surface is more than 3 millimeters.Further, the quantity of described fuel feed hole 12 could be arranged at least two, each oil-feed
Hole 12 is symmetrically distributed in the same level position of the described body of rod 11.
Described fixture 13 is arranged in described receiving chamber, and its position is higher than described fuel feed hole 12.Fig. 2 and Fig. 3 is respectively
The sectional view of described fixture 13 and upward view, described fixture 13 includes blind round hole 21 and two optical transport through holes 22.Institute
The opening stating blind round hole 21 is positioned at described fixture 13 bottom surface, and one end of described optical transport through hole 22 is positioned at described fixture
13 end faces, the other end of described optical transport through hole 22 is positioned at described blind round hole 21 bottom surface.Further, described blind round hole 21
Axis and the dead in line of described fixture 13.In the present embodiment, described optical transport through hole 22 is cylindrical hole, its axis
Parallel with the axis of described fixture 13, and two optical transport through holes 22 relative to described fixture 13 axis axisymmetricly.
Described fixture 13 can be plastic parts, utilizes the elasticity of plastic parts itself, directly described fixture 13 can be stuck in described appearance
Receive intracavity, it is not necessary to use unnecessary fixing means again.
Described lens 14 are arranged in described receiving chamber and one end embeds described blind round hole 21, and Fig. 4 is described lens 14
Structural representation.Described lens 14 include cylindrical portion 23 and conus portion 24, the floor space of described cylindrical portion 23 and described circular cone
The floor space in portion 24 is equal, and one end of described cylindrical portion 23 embeds described blind round hole 21, and the other end of described cylindrical portion 23 is even
Connect the bottom surface of described conus portion 24.In the present embodiment, the surface of described lens 14 is through blasting treatment.Through blasting treatment,
Probing light can be made to concentrate on described conus portion 24, to reduce light leak and to strengthen reception signal.
Described seal plug plug member 15 is arranged on the described body of rod 11 end face, can be epoxy resin end cap, with to the described body of rod
11 end faces seal.Described bottom end cover 16 is arranged on the described body of rod 11 bottom surface.Fig. 5 is the structural representation of described bottom end cover 16
Figure, in the present embodiment, described bottom end cover 16 is the plastic cement capping with at least one arc notch.Described sensor circuit plate 17
Being arranged between described seal plug plug member 15 and described fixture 13, the space between itself and the described body of rod 11 inner surface is filled with
Silicone rubber, to fix described sensor circuit plate 17, it is to avoid described sensor circuit plate 17 rocks in accommodating chamber and damages electronics
Components and parts.
When whether detection double-layer tank or double-skin duct occur leakage, the liquid level detection device of the present embodiment is placed on double
Layer tank or the detection standpipe bottom of double-skin duct.When there is not leakage in double-layer tank or double-skin duct, sensor circuit plate 17
On the infrared light that sends of infrared light-emitting device be irradiated into lens 14 through an optical transport through hole, infrared light is carried out instead by lens 14
Penetrating, reflection light returns to sensor circuit plate 17 through another optical transport through hole, the light-sensitive device on sensor circuit plate 17 connect
Receive；When double-layer tank or double-skin duct occur leakage, leakage liquid (water or oil) enters through fuel feed hole 12 and accommodates chamber, sensing
The infrared light that infrared light-emitting device on circuit board 17 sends is irradiated into lens 14 through an optical transport through hole, then is refracted to accommodate
In the liquid in chamber, the light-sensitive device on sensor circuit plate 17 can not receive or can only receive a small amount of Infrared.Sensor circuit
The optical signal of reception is converted to the signal of telecommunication by plate 17, and by the signal of telecommunication being transmitted to being positioned at through the cable of seal plug plug member 15
Fluid level transmitter outside double-layer tank or double-skin duct.Size according to the signal of telecommunication, it is possible to judge double-layer tank or bilayer
Whether sounding leaks pipeline.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (10)
1. the liquid level detection device for gas station's leak detection, it is characterised in that including: there is the body of rod accommodating chamber
(11)；It is positioned close to the described body of rod (11) bottom surface, at least one fuel feed hole connected with the external world in described receiving chamber
(12)；The fixture (13) being arranged in described receiving chamber, described fixture (13) includes that blind round hole (21) and two light pass
Defeated through hole (22), the opening of described blind round hole (21) is positioned at described fixture (13) bottom surface, described optical transport through hole (22)
One end be positioned at described fixture (13) end face, the other end of described optical transport through hole (22) is positioned at described blind round hole (21) end
Face；It is arranged in described receiving chamber and the lens (14) of one end described blind round hole of embedding (21)；It is arranged on the described body of rod (11)
The seal plug plug member (15) of end face and be arranged on the bottom end cover (16) of the described body of rod (11) bottom surface；It is arranged on described sealing to block
Sensor circuit plate (17) between part (15) and described fixture (13).
Liquid level detection device for gas station's leak detection the most according to claim 1, it is characterised in that described oil-feed
The quantity in hole (12) is at least two, and each fuel feed hole (12) is symmetrically distributed in the same level position of the described body of rod (11).
Liquid level detection device for gas station's leak detection the most according to claim 1, it is characterised in that described fixing
Part (13) is plastic parts.
Liquid level detection device for gas station's leak detection the most according to claim 1, it is characterised in that described circle
The axis of blind hole (21) and the dead in line of described fixture (13).
Liquid level detection device for gas station's leak detection the most according to claim 4, it is characterised in that described light passes
The axis of defeated through hole (22) is parallel with the axis of described fixture (13), and two optical transport through holes (22) are fixing relative to described
The axis of part (13) is axisymmetricly.
Liquid level detection device for gas station's leak detection the most according to claim 1, it is characterised in that described lens
(14) cylindrical portion (23) and conus portion (24) are included, the floor space of described cylindrical portion (23) and the floor space of described conus portion (24)
Equal；
One end of described cylindrical portion (23) embeds described blind round hole (21), and the other end of described cylindrical portion (23) connects described circle
The bottom surface in tapering (24).
Liquid level detection device for gas station's leak detection the most according to claim 6, it is characterised in that described lens
(14) surface is through blasting treatment.
Liquid level detection device for gas station's leak detection the most according to claim 1, it is characterised in that described sealing
Type of tamper evidence (15) is epoxy resin end cap.
Liquid level detection device for gas station's leak detection the most according to claim 1, it is characterised in that described lower end
Lid (16) is the plastic cement capping with at least one arc notch.
10., according to the liquid level detection device for gas station's leak detection described in any one of claim 1 to 9, its feature exists
In, the space between described sensor circuit plate (17) and the described body of rod (11) inner surface is filled with silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610697653.9A CN106289453B (en) | 2016-08-22 | 2016-08-22 | Liquid level detection device for gas station leakage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610697653.9A CN106289453B (en) | 2016-08-22 | 2016-08-22 | Liquid level detection device for gas station leakage detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106289453A true CN106289453A (en) | 2017-01-04 |
| CN106289453B CN106289453B (en) | 2023-12-01 |
Family
ID=57661973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610697653.9A Active CN106289453B (en) | 2016-08-22 | 2016-08-22 | Liquid level detection device for gas station leakage detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106289453B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871504A (en) * | 2018-07-27 | 2018-11-23 | 青岛澳科仪器有限责任公司 | A kind of detection device and detection method |
| CN116692294A (en) * | 2023-08-03 | 2023-09-05 | 中国石油天然气股份有限公司甘肃销售分公司 | Liquid level detection device for gas station leakage detection |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828101A (en) * | 2007-10-17 | 2010-09-08 | 科桑克里斯普兰特公司 | Gas leak detector, and a method for gas leak detection |
| US20130265562A1 (en) * | 2008-08-28 | 2013-10-10 | Shanghai Kohler Electronics, Ltd. | Distance detecting induction device |
| CN103596608A (en) * | 2011-03-31 | 2014-02-19 | 株式会社根本杏林堂 | Leakage detection sensor and drug infusion system |
| CN203758578U (en) * | 2014-02-27 | 2014-08-06 | 苏州中崟传感股份有限公司 | Photoelectric liquid level sensor |
| CN105758797A (en) * | 2014-12-16 | 2016-07-13 | 有研国晶辉新材料有限公司 | Sample cell suitable for infrared spectroscopic analysis of corrosive liquid by liquid membrane method |
| CN205898250U (en) * | 2016-08-22 | 2017-01-18 | 绵阳高新区恒奥电子科技有限公司 | A level sensor for leak testing |
-
2016
- 2016-08-22 CN CN201610697653.9A patent/CN106289453B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828101A (en) * | 2007-10-17 | 2010-09-08 | 科桑克里斯普兰特公司 | Gas leak detector, and a method for gas leak detection |
| US20130265562A1 (en) * | 2008-08-28 | 2013-10-10 | Shanghai Kohler Electronics, Ltd. | Distance detecting induction device |
| CN103596608A (en) * | 2011-03-31 | 2014-02-19 | 株式会社根本杏林堂 | Leakage detection sensor and drug infusion system |
| CN203758578U (en) * | 2014-02-27 | 2014-08-06 | 苏州中崟传感股份有限公司 | Photoelectric liquid level sensor |
| CN105758797A (en) * | 2014-12-16 | 2016-07-13 | 有研国晶辉新材料有限公司 | Sample cell suitable for infrared spectroscopic analysis of corrosive liquid by liquid membrane method |
| CN205898250U (en) * | 2016-08-22 | 2017-01-18 | 绵阳高新区恒奥电子科技有限公司 | A level sensor for leak testing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871504A (en) * | 2018-07-27 | 2018-11-23 | 青岛澳科仪器有限责任公司 | A kind of detection device and detection method |
| CN116692294A (en) * | 2023-08-03 | 2023-09-05 | 中国石油天然气股份有限公司甘肃销售分公司 | Liquid level detection device for gas station leakage detection |
| CN116692294B (en) * | 2023-08-03 | 2023-10-20 | 中国石油天然气股份有限公司甘肃销售分公司 | Liquid level detection device for gas station leakage detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106289453B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204115816U (en) | For being installed in the metering system in the ozzle of tank | |
| CN204250698U (en) | The Novel oil storage tank of a kind of safety anti-explosive, leakproof | |
| CN106289453A (en) | Liquid level detection device for gas station's leak detection | |
| CN205102988U (en) | Valve valve stem packing department gas leak detection device | |
| US6538261B1 (en) | Wet line fluid removal system with optical sensor | |
| EA016800B1 (en) | Gas leak detector, method and means for gas leak detection | |
| JPS59170739A (en) | Leak inspecting method of tank | |
| US8915157B1 (en) | Nonintrusive sensor cup for composite waste tank | |
| CN205898250U (en) | A level sensor for leak testing | |
| CN207675387U (en) | single-station sealing test system | |
| CA2708667A1 (en) | Method for testing for the presence of a leak hole in a fluid container | |
| CN103411738A (en) | Air tightness detection device of aircraft auxiliary power engine starting motor | |
| US11125641B1 (en) | Gas leakage sensing device | |
| CN103213779A (en) | Double-layer underground buried oil tank | |
| KR20170136306A (en) | Device and system for detecting oil leakage using resistance sensor and hydraulic control trap | |
| KR20160060525A (en) | Steel inner tank frp double shell structure | |
| CN104807600B (en) | Two-layer oil tank leakage detection optical fiber unit sensor | |
| KR200398442Y1 (en) | Oil leakage monitoring apparatus of pipe arrangement | |
| US20050143939A1 (en) | Method and apparatus for inspecting leakage of container | |
| KR101291695B1 (en) | Supersonic type oil leak detector | |
| CN206627181U (en) | Vehicle oil consumption detecting system | |
| WO2018049463A1 (en) | Tank testing apparatus and method | |
| CN106641423A (en) | Oil tank truck and sea valve thereof | |
| CN208868705U (en) | A kind of oil storage tank with warning function | |
| JP2001082700A (en) | Leakage detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |