CN106678466A - Submarine natural gas transportation device - Google Patents
Submarine natural gas transportation device Download PDFInfo
- Publication number
- CN106678466A CN106678466A CN201710027063.XA CN201710027063A CN106678466A CN 106678466 A CN106678466 A CN 106678466A CN 201710027063 A CN201710027063 A CN 201710027063A CN 106678466 A CN106678466 A CN 106678466A
- Authority
- CN
- China
- Prior art keywords
- joint
- natural gas
- sealing shroud
- air bag
- pipe
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a submarine natural gas transportation device and aims to overcome the defect that submarine natural gas transportation has a risk of leakage and relatively large potential safety hazards cannot be immediately found. The submarine natural gas transportation device disclosed by the invention comprises a recovery pipe and transportation pipes which are connected successively end to end; adjacent two transportation pipes are connected through a flange; a sealing cover is hermetically connected to a position, close to the connecting flange, of the end portion of each transportation pipe in a sleeving manner; the sealing cover, the connecting flange and the transportation pipe form a recovery chamber; the sealing cover is connected to a fine pipe and a gas outlet pipe communicating with the recovery chamber; the fine pipe communicates with the recovery pipe; an exhaust pipe is connected between adjacent two gas outlet pipes; an alarming joint is connected to the upper end of the exhaust pipe; a bracket and an air bag are arranged in the alarming joint; an air bag joint is arranged at the lower end of the air bag; a shearing fine pipe is connected between the air bag joint and the exhaust pipe; the air bag joint is connected to the bracket in a liftable manner; a V-shaped push rod is hinged into the alarming joint; and a shearing blade for cutting off the shearing fine pipe is connected to the lower end of the push rod.
Description
Technical field
The present invention relates to a kind of gas transportation facilities, more specifically, it relates to a kind of ocean natural gas conveyer device.
Background technology
At present, ocean natural gas exploitation is typically conveyed using pipeline, and natural gas is necessary to ensure that during conveying
Its sealing property, prevents the risk of leakage.But conveyance conduit use time length is in adjacent two pipelines link position easy
Become leakage point, there is potential safety hazard, now conventional way is to increase sealing ring in adjacent two pipelines link position, to improve
Sealing property, can not in time find, easy initiation fire arranges blast in natural gas leaking to environment when there is natural gas leaking.
The content of the invention
Instant invention overcomes ocean natural gas conveying has the risk of leakage, can not find in time to exist during leakage larger
A kind of deficiency of potential safety hazard, there is provided ocean natural gas conveyer device, is less prone to leakage in ocean natural gas course of conveying
Risk, even if leakage situation occur between adjacent two pipeline also can find in time, and the natural gas that will leak out out pass through tubule
Recycle, will not be directly leaked in environment, it is to avoid potential safety hazard.
In order to solve above-mentioned technical problem, the present invention is employed the following technical solutions：A kind of ocean natural gas conveyer device, bag
Recovery tube, some end to end delivery pipes successively are included, delivery pipe two ends are equipped with adpting flange, between adjacent two delivery pipe
Connected by adpting flange, conveying tube end has been tightly sleeved sealing shroud near adpting flange position, adjacent two sealing shroud it
Between threaded connection and heat together, wherein a sealing ring is tightly sleeved on adpting flange, sealing shroud is closely thermally melted in conveying
In pipe outer wall, constitute between sealing shroud, adpting flange, delivery pipe and reclaim chamber, be respectively connected with sealing shroud and reclaim what chamber connected
Tubule, escape pipe, on the recovery tube of tubule connection, are provided with normally closed solenoid valve on tubule, reclaim intracavity and be provided with pressure detecting
Device, between adjacent two escape pipe exhaustor is connected, and normally open solenoid valve is provided with exhaustor, and the connection warning of exhaustor upper end connects
Head, is provided with support, air bag in warning joint, air bag lower end is provided with bladder joint, and unidirectional charge valve, gas are provided with bladder joint
Connection shearing tubule between capsule joint and exhaustor, bladder joint liftable is connected on support, connects between air bag and support
Drawstring, is hinged with the push rod of V-arrangement in warning joint, push rod upper end is near air bag and can be pushed up by air bag, and push rod lower end connects
The shear-blade for cutting off shearing tubule is connected to, shear-blade is arranged near shearing tubule, normally closed solenoid valve, normally opened electromagnetism
Valve, pressure detector electrically connect controller.
Ocean natural gas are easily the link position in adjacent two delivery pipe where appearance leakage in course of conveying, most,
Sealing shroud hot-melt adhesive paste improves the sealing property of two adpting flanges connection in the adpting flange position of adjacent two delivery pipe, makes
The risk of leakage is less prone in ocean natural gas course of conveying.It is natural if leak between adjacent two adpting flange
Diarrhea due to stagnation of QI drain to recovery intracavity and pressure gradually rise, and by escape pipe, exhaustor, normally open solenoid valve, unidirectional charge valve to
Inflation in air bag, air bag is outwards heaved, and promotes push rod to rotate, and the shear-blade for making push rod lower end is sheared to shearing tubule,
Close when normally open solenoid valve after tubule is cut off is sheared, because the density of natural gas is less than the density of air, therefore air bag is upwards
Rise, and held by drawstring, be easy to personnel timely and accurately to find the leak position of delivery pipe.Now pressure detector is detected
Reclaiming cavity pressure increases, and this signal is sent to into controller, and controller control normally closed solenoid valve is opened, and makes the day of leakage
So gas is transported in recovery tube by tubule, is recycled, and the natural gas of prevent leakage is directly discharged in environment, it is to avoid
Potential safety hazard.The risk of leakage is less prone in ocean natural gas course of conveying, even if occurring leakage between adjacent two pipeline
Situation also can find in time, and the natural gas that will leak out out is recycled by tubule, will not be directly leaked in environment, it is to avoid
Potential safety hazard.
Preferably, support is provided with jack, bladder joint and jack activity grafting, jack side wall is provided with installing hole,
Installing hole opening is connected with touch switch, and spring is provided with installing hole, ball is abutted, and abutting ball is connected to spring and air bag connects
Between head, to abut and be connected with feeler lever on ball, feeler lever outer end is provided with the contact for touching touch switch, contact and touch switch it
Between be provided with gap, touch switch electrical connection normally open solenoid valve simultaneously controls the break-make of normally opened battery valve.When air bag is raised above, air bag
Joint departs from after jack, under the action of the spring, abuts ball and outwards ejects, and contact is touched on touch switch, and touch switch is led
It is logical, close so as to control normally closed solenoid valve, prevent natural gas leaking in environment.
Preferably, being provided with the buzzer that break-make is controlled by touch switch on warning joint.Touch switch is touched to lead
Logical, so as to connect buzzer, buzzer starts buzzing warning, is easy to personnel to be quickly found out leakage point.
Preferably, being connected with locking anchor ear on sealing shroud outer wall.The setting of locking anchor ear makes sealing shroud with delivery pipe
Connect even closer reliability.
Preferably, being connected with three way cock between exhaustor and escape pipe, scene 2 trachea is connected to three way cock
Two imports on, exhaustor is connected in the outlet of three way cock.Connected by three way cock between exhaustor and escape pipe, even
Connect conveniently.
Preferably, push rod and warning joint articulated position are provided with positioning torsion spring.Positioning torsion spring is positioned to push rod,
It is easy to cutting of the shear-blade to shearing tubule on push rod.
Preferably, warning joint is in sleeve-like structure and is threaded on the outer wall of exhaustor upper end.Warning joint design
Simply, it is easy to connect.
Preferably, being provided with one-way exhaust valve on tubule.The setting of one-way exhaust valve prevents tubule interior air-flow from occurring down
Flow phenomenon.
Preferably, sealing shroud is in one-level step-like structure, gap is provided between sealing shroud transition portion and adpting flange,
Sealing shroud path part is socketed in conveying pipe outer wall, wherein the large diameter portion of a sealing shroud is socketed on adpting flange outer wall,
The large diameter portion of another sealing shroud is socketed on the outer wall of the sealing shroud large diameter portion being attached thereto.Sealing shroud is connected with delivery pipe
Good airproof performance, it is to avoid the situation that natural gas is leaked in environment occur, so as to be prevented effectively from potential safety hazard.
Compared with prior art, the invention has the beneficial effects as follows：Leakage is less prone in ocean natural gas course of conveying
Risk, though leakage situation occur between adjacent two pipeline also can find in time, and the natural gas that will leak out out is returned by tubule
Receive and utilize, will not be directly leaked in environment, it is to avoid potential safety hazard.
Description of the drawings
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is the structural representation of the warning joint of the present invention；
Fig. 3 is the attachment structure schematic diagram of the support with bladder joint of the present invention；
In figure：1st, recovery tube, 2, delivery pipe, 3, adpting flange, 4, sealing shroud, 5, reclaim chamber, 6, tubule, 7, escape pipe, 8, often
Close electromagnetic valve, 9, pressure detector, 10, exhaustor, 11, normally open solenoid valve, 12, warning joint, 13, support, 14, air bag, 15,
Bladder joint, 16, unidirectional charge valve, 17, shearing tubule, 18, drawstring, 19, push rod, 20, shear-blade, 21, jack, 22, peace
Dress hole, 23, touch switch, 24, spring, 25, abut ball, 26, feeler lever, 27, contact, 28, locking anchor ear, 29, three way cock,
30th, one-way exhaust valve.
Specific embodiment
Below by specific embodiment, and accompanying drawing is combined, technical scheme is further described specifically：
Embodiment：A kind of ocean natural gas conveyer device（Referring to accompanying drawing 1 to 3）, including recovery tube 1, some head and the tail phases successively
Delivery pipe 2 even, delivery pipe two ends are equipped with adpting flange 3, are connected by adpting flange between adjacent two delivery pipe, delivery pipe
End has been tightly sleeved sealing shroud 4 near adpting flange position, is threadedly coupled between adjacent two sealing shroud and heats together,
Wherein a sealing ring is tightly sleeved on adpting flange, and sealing shroud is closely thermally melted in conveying pipe outer wall, is connected on sealing shroud outer wall
It is connected to locking anchor ear 28.Sealing shroud is in one-level step-like structure, and gap is provided between sealing shroud transition portion and adpting flange, close
Big envelope path part is socketed in conveying pipe outer wall and is socketed with locking anchor ear on outer wall, wherein the large diameter portion of a sealing shroud
It is socketed on adpting flange outer wall, the large diameter portion of another sealing shroud is socketed in the outer wall of the sealing shroud large diameter portion being attached thereto
Connection locking anchor ear on upper and outer wall.Two are constituted between sealing shroud, adpting flange, delivery pipe and reclaims chamber 5, connected on sealing shroud
It is connected to and reclaims tubule 6, escape pipe 7 that chamber connects, on the recovery tube of tubule connection, normally closed solenoid valve 8 is installed on tubule, returns
Receive intracavity and pressure detector 9 is installed, exhaustor 10 is connected between adjacent two escape pipe, normally open solenoid valve is installed on exhaustor
11, exhaustor upper end connection warning joint 12 is provided with support 13, air bag 14 in warning joint, air bag lower end is provided with bladder joint
15, unidirectional charge valve 16 is installed in bladder joint, connection shearing tubule 17 between bladder joint and exhaustor, bladder joint can
Lifting is connected on support, and connection stay cord 18 between air bag and support are hinged with the push rod 19 of V-arrangement, on push rod in warning joint
End is near air bag and can be pushed up by air bag, and push rod lower end is connected with the shear-blade 20 for cutting off shearing tubule, shearing
Blade is arranged near shearing tubule, and normally closed solenoid valve, normally open solenoid valve, pressure detector electrically connect controller.Pressure detecting
Pressure signal is sent to controller by device, and when recovery cavity pressure rising is detected, front natural gas occurs in that leakage, now
Controller control normally closed solenoid valve is opened, and the natural gas for making leakage is reclaimed by tubule inflow recovery tube.Support is provided with
Jack 21, bladder joint and jack activity grafting, jack side wall is provided with installing hole 22, and installing hole opening is connected with shake-up and opens
23 are closed, spring 24 is installed in installing hole, ball 25 is abutted, abutted ball and be connected between spring and bladder joint, abutted and connect on ball
Feeler lever 26 is connected to, feeler lever outer end is provided with the contact 27 for touching touch switch, gap is provided between contact and touch switch, is touched
Dynamic switch electrically connects normally open solenoid valve and controls the break-make of normally opened battery valve.It is provided with warning joint logical by touch switch control
Disconnected buzzer.Three way cock 29 is connected between exhaustor and escape pipe, scene 2 trachea is connected to the two of three way cock
In import, exhaustor is connected in the outlet of three way cock.Push rod and warning joint articulated position are provided with positioning torsion spring.Report to the police
Joint is in sleeve-like structure and is threaded on the outer wall of exhaustor upper end.One-way exhaust valve 30 is installed on tubule.
Ocean natural gas are easily the link position in adjacent two delivery pipe where appearance leakage in course of conveying, most,
Sealing shroud hot-melt adhesive paste improves the sealing property of two adpting flanges connection in the adpting flange position of adjacent two delivery pipe, makes
The risk of leakage is less prone in ocean natural gas course of conveying.It is natural if leak between adjacent two adpting flange
Diarrhea due to stagnation of QI drain to recovery intracavity and pressure gradually rise, and by escape pipe, exhaustor, normally open solenoid valve, unidirectional charge valve to
Inflation in air bag, air bag is outwards heaved, and promotes push rod to rotate, and the shear-blade for making push rod lower end is sheared to shearing tubule,
Rise when shearing tubule is cut off rear gasbag, and held by drawstring, be easy to personnel timely and accurately to find the leakage position of delivery pipe
Put.Bladder joint departs from jack, under the action of the spring, abuts ball and outwards ejects, and contact is touched on touch switch, and shake-up is opened
Conducting is closed, is closed so as to control normally closed solenoid valve, prevent natural gas leaking in environment, and the conducting of Mel device begins to send out honeybee
Song is reported to the police.Simultaneously pressure detector detects recovery cavity pressure and increases, and this signal is sent to into controller, controls
Device control normally closed solenoid valve processed is opened, and the natural gas for making leakage is transported in recovery tube by tubule, is recycled, prevented
The natural gas of leakage is directly discharged in environment, it is to avoid potential safety hazard.Leakage is less prone in ocean natural gas course of conveying
Risk, even if leakage situation occur between adjacent two pipeline also can find in time, and the natural gas that will leak out out pass through tubule
Recycle, will not be directly leaked in environment, it is to avoid potential safety hazard.
Embodiment described above is one kind preferably scheme of the present invention, not makees any pro forma to the present invention
Limit, also have other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (9)
1. a kind of ocean natural gas conveyer device, is characterized in that, including recovery tube, some end to end delivery pipes successively,
Delivery pipe two ends are equipped with adpting flange, are connected by adpting flange between adjacent two delivery pipe, and conveying tube end is near connection
Flange position has been tightly sleeved sealing shroud, is threadedly coupled between adjacent two sealing shroud and heats together, wherein a sealing ring
It is tightly sleeved on adpting flange, sealing shroud is closely thermally melted in conveying pipe outer wall, between sealing shroud, adpting flange, delivery pipe
Constitute and reclaim chamber, be respectively connected with sealing shroud and reclaim tubule, escape pipe that chamber connects, on the recovery tube of tubule connection, tubule
On normally closed solenoid valve is installed, reclaim intracavity and pressure detector be installed, connect exhaustor, exhaustor between adjacent two escape pipe
On normally open solenoid valve is installed, connection warning joint in exhaustor upper end is provided with support, air bag in warning joint, air bag lower end sets
There is bladder joint, unidirectional charge valve is installed in bladder joint, connection shearing tubule between bladder joint and exhaustor, air bag connects
Head liftable is connected on support, and connection stay cord between air bag and support is hinged with the push rod of V-arrangement, on push rod in warning joint
End is near air bag and can be pushed up by air bag, and push rod lower end is connected with the shear-blade for cutting off shearing tubule, sheaves
Piece is arranged near shearing tubule, and normally closed solenoid valve, normally open solenoid valve, pressure detector electrically connect controller.
2. a kind of ocean natural gas conveyer device according to claim 1, is characterized in that, support is provided with jack, air bag
Joint and jack activity grafting, jack side wall is provided with installing hole, and installing hole opening is connected with peace in touch switch, installing hole
Equipped with spring, ball is abutted, abut ball and be connected between spring and bladder joint, to be abutted and be connected with feeler lever on ball, feeler lever outer end sets
There is the contact for touching touch switch, gap, touch switch electrical connection normally open solenoid valve are provided between contact and touch switch
And control the break-make of normally opened battery valve.
3. a kind of ocean natural gas conveyer device according to claim 2, is characterized in that, be provided with warning joint by touching
The buzzer of dynamic on-off control break-make.
4. a kind of ocean natural gas conveyer device according to claim 1, is characterized in that, lock is connected with sealing shroud outer wall
Hug hoop.
5. a kind of ocean natural gas conveyer device according to Claims 1-4 any one, is characterized in that, exhaustor and
Three way cock is connected between escape pipe, scene 2 trachea is connected in two imports of three way cock, and exhaustor is connected to three
In the outlet of pass joint.
6. a kind of ocean natural gas conveyer device according to Claims 1-4 any one, is characterized in that, push rod and report
Alert joint articulated position is provided with positioning torsion spring.
7. a kind of ocean natural gas conveyer device according to Claims 1-4 any one, is characterized in that, warning joint
In sleeve-like structure and it is threaded on the outer wall of exhaustor upper end.
8. a kind of ocean natural gas conveyer device according to Claims 1-4 any one, is characterized in that, pacify on tubule
Equipped with one-way exhaust valve.
9. a kind of ocean natural gas conveyer device according to Claims 1-4 any one, is characterized in that, sealing shroud is in
One-level step-like structure, is provided with gap between sealing shroud transition portion and adpting flange, sealing shroud path part is socketed in conveying
In pipe outer wall, wherein the large diameter portion of a sealing shroud is socketed on adpting flange outer wall, the large diameter portion socket of another sealing shroud
On the outer wall of the sealing shroud large diameter portion being attached thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027063.XA CN106678466B (en) | 2017-01-15 | 2017-01-15 | A kind of ocean natural gas conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710027063.XA CN106678466B (en) | 2017-01-15 | 2017-01-15 | A kind of ocean natural gas conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106678466A true CN106678466A (en) | 2017-05-17 |
| CN106678466B CN106678466B (en) | 2019-01-22 |
Family
ID=58858869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710027063.XA Expired - Fee Related CN106678466B (en) | 2017-01-15 | 2017-01-15 | A kind of ocean natural gas conveying device |
Country Status (1)
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990060A (en) * | 2017-11-22 | 2018-05-04 | 张文兵 | A kind of flange-connection stainless steel metal flexible pipe with blast resistance construction |
| CN108317314A (en) * | 2018-04-04 | 2018-07-24 | 南京知行管业有限公司 | One kind being used for the efficient sealed device of cooker connecting tube |
| CN108374936A (en) * | 2018-03-01 | 2018-08-07 | 湖南天力瑞家新材料科技股份有限公司 | A kind of pipe joint |
| CN108426123A (en) * | 2018-06-14 | 2018-08-21 | 朱战平 | A kind of chemical pipeline leakproof alarm integral type protective cover |
| CN110873255A (en) * | 2019-08-20 | 2020-03-10 | 中海油(福建)应急维修有限责任公司 | Low-temperature pipeline flange cladding device and method |
| CN111022823A (en) * | 2020-01-09 | 2020-04-17 | 中国安全生产科学研究院 | Quick maintenance device for oil and gas pipeline |
| CN111365541A (en) * | 2020-03-16 | 2020-07-03 | 孙龙 | Pressure gas pipeline flange |
| CN111623247A (en) * | 2020-05-06 | 2020-09-04 | 安徽省天然气开发股份有限公司 | Portable natural gas pipeline detection device |
| CN112413159A (en) * | 2020-09-28 | 2021-02-26 | 品风燃气安全科技(广东)有限公司 | Gas safety valve with leakage-proof alarm function |
| CN112984238A (en) * | 2021-03-25 | 2021-06-18 | 南通市扬子橡塑有限公司 | Rubber corrugated pipe for marine equipment engineering |
| CN113236882A (en) * | 2021-04-15 | 2021-08-10 | 汪力 | Leakage self-alarming type pipeline butt joint structure for urban underground fluid conveying pipeline |
| CN113532765A (en) * | 2020-04-10 | 2021-10-22 | 浙江省海洋水产研究所 | Gas path gas leakage detection structure and method for chromatograph |
| CN113532764A (en) * | 2020-04-10 | 2021-10-22 | 浙江省海洋水产研究所 | A chromatograph gas circuit leakage detection structure for laboratory |
| CN113775849A (en) * | 2021-09-24 | 2021-12-10 | 江苏赛弗道管道股份有限公司 | Flexible composite pipe interlayer gas exhaust device for acid natural gas gathering and transportation and installation method thereof |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990060A (en) * | 2017-11-22 | 2018-05-04 | 张文兵 | A kind of flange-connection stainless steel metal flexible pipe with blast resistance construction |
| CN108374936A (en) * | 2018-03-01 | 2018-08-07 | 湖南天力瑞家新材料科技股份有限公司 | A kind of pipe joint |
| CN108317314A (en) * | 2018-04-04 | 2018-07-24 | 南京知行管业有限公司 | One kind being used for the efficient sealed device of cooker connecting tube |
| CN108426123A (en) * | 2018-06-14 | 2018-08-21 | 朱战平 | A kind of chemical pipeline leakproof alarm integral type protective cover |
| CN108426123B (en) * | 2018-06-14 | 2020-04-28 | 上海双润化工有限公司 | Chemical pipeline leak protection alarm integral type safety cover |
| CN110873255A (en) * | 2019-08-20 | 2020-03-10 | 中海油(福建)应急维修有限责任公司 | Low-temperature pipeline flange cladding device and method |
| CN111022823A (en) * | 2020-01-09 | 2020-04-17 | 中国安全生产科学研究院 | Quick maintenance device for oil and gas pipeline |
| CN111365541B (en) * | 2020-03-16 | 2021-06-01 | 温州精创法兰有限公司 | Pressure gas pipeline flange |
| CN111365541A (en) * | 2020-03-16 | 2020-07-03 | 孙龙 | Pressure gas pipeline flange |
| CN113532764B (en) * | 2020-04-10 | 2024-04-12 | 浙江省海洋水产研究所 | Chromatograph gas circuit gas leakage detection structure for laboratory |
| CN113532765B (en) * | 2020-04-10 | 2024-02-13 | 浙江省海洋水产研究所 | Chromatograph gas circuit air leakage detection structure and method |
| CN113532765A (en) * | 2020-04-10 | 2021-10-22 | 浙江省海洋水产研究所 | Gas path gas leakage detection structure and method for chromatograph |
| CN113532764A (en) * | 2020-04-10 | 2021-10-22 | 浙江省海洋水产研究所 | A chromatograph gas circuit leakage detection structure for laboratory |
| CN111623247B (en) * | 2020-05-06 | 2021-11-30 | 安徽省天然气开发股份有限公司 | Portable natural gas pipeline detection device |
| CN111623247A (en) * | 2020-05-06 | 2020-09-04 | 安徽省天然气开发股份有限公司 | Portable natural gas pipeline detection device |
| CN112413159B (en) * | 2020-09-28 | 2022-12-27 | 品风燃气安全技术(广东)有限公司 | Gas safety valve with leakage-proof alarm function |
| CN112413159A (en) * | 2020-09-28 | 2021-02-26 | 品风燃气安全科技(广东)有限公司 | Gas safety valve with leakage-proof alarm function |
| CN112984238B (en) * | 2021-03-25 | 2023-07-04 | 南通市扬子橡塑有限公司 | Rubber corrugated pipe for marine equipment engineering |
| CN112984238A (en) * | 2021-03-25 | 2021-06-18 | 南通市扬子橡塑有限公司 | Rubber corrugated pipe for marine equipment engineering |
| CN113236882A (en) * | 2021-04-15 | 2021-08-10 | 汪力 | Leakage self-alarming type pipeline butt joint structure for urban underground fluid conveying pipeline |
| CN113775849A (en) * | 2021-09-24 | 2021-12-10 | 江苏赛弗道管道股份有限公司 | Flexible composite pipe interlayer gas exhaust device for acid natural gas gathering and transportation and installation method thereof |
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| Publication number | Publication date |
|---|---|
| CN106678466B (en) | 2019-01-22 |
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