CN206458891U - A kind of maintenance air bag of LNG butterfly valves - Google Patents
A kind of maintenance air bag of LNG butterfly valves Download PDFInfo
- Publication number
- CN206458891U CN206458891U CN201621029880.6U CN201621029880U CN206458891U CN 206458891 U CN206458891 U CN 206458891U CN 201621029880 U CN201621029880 U CN 201621029880U CN 206458891 U CN206458891 U CN 206458891U
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- air bag
- lng
- butterfly valves
- maintenance
- utility
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Abstract
The utility model is related to a kind of maintenance air bag of new LNG butterfly valves, including air bag, metal hose, control valve, snap joint, air bag collector, and the equipment enters after pipeline directly and seal for pipe joints.The utility model utilizes the principle of air sac sealing, realize the crucial low temperature butterfly valve of Large LNG receiving station, because pipeline can not carry out LNG displacements, cause the valve can not carry out the problem of preventative or fault maintenance, meanwhile, using air bag, not only cheap, repeatable utilization rate is high, and, once the air bag is entered by mistake through in LNG storage tank, many influences will not be caused to the normal operation for receiving station equipment.
Description
Technical field
The utility model is related to a kind of maintenance air bag of LNG butterfly valves.
Background technology
In project installation and maintenance industry, LNG butterfly valves are commonly used as the critical valves of LNG receiving stations, are being used
During, damaged due to spare part, equipment bite the problems such as be frequently necessary to carry out full maintenance to the valve, many LNG butterfly valves set
Fully welded valve is calculated as, can only be repaired by online manhole, due to the particularity of LNG industries, many low temperature butterfly valves
Line replacement and purging can not be entered, cause the valve can not carry out normal maintenance.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of inspection for the full welding LNG butterfly valves that can not enter line replacement
Repair air bag.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of maintenance air bag of LNG butterfly valves, including gas
Capsule, metal hose, control valve, snap joint, and be sequentially connected；The air bag is accommodated in air bag collector, institute during work
Air bag is stated to be connected on aerator.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the control valve is provided with control button；During provided with control button, control button provided with pressurising, pause,
Decompression function, switch control work.
Further, angle pulley mechanism is additionally provided with the air bag collector, and provided with balancing weight.Provided with angle pulley machine
Structure and counterweight, air bag collector are smoothly entered in pipeline by pipeline.
Further, the control valve outlet is provided with snap joint；Control valve outlet is provided with snap joint, and air bag is full of
After gas, snap joint is removed, keeps gasbag pressure constant, is easy to maintenance below.
Further, the air bag collector is provided with a complete air bag.Air bag collector is provided with a complete air bag,
It is convenient to enter in pipeline, greatly save the time, and it is easy to operate.
The effect of the air sac sealing is to seal a sealing device, thorough sealed valve and the direct passage of pipeline, from
Fundamentally solve butterfly valve because of downstream other can not remove and caused by the problem of can not repair.
During utility model works, metal hose, control valve, metal hose are connected with air bag collector, according to pipe
The size in road selects the air bag of different model, and air bag collector is put into pipeline, after access external gas source, presses control button
Air inlet switch, you can to carry out pressurising to air bag, until air bag reaches seal request.
The utility model utilizes the principle of air sac sealing, realizes that pipeline is directly isolated with LNG butterfly valves, so as to be LNG rows
The maintenance of industry low temperature butterfly valve creates necessary condition.Meanwhile, using low temperature air bag, with it is quick, repeat usage is high the features such as.
Brief description of the drawings
Fig. 1 is the structural representation of the maintenance air bag of LNG butterfly valves of the present utility model；
Fig. 2 is that the utility model discharges air bag view in valve body；
Fig. 3 departs from source of the gas schematic diagram for the maintenance air bag of LNG butterfly valves of the present utility model；
In accompanying drawing, list of parts is as follows：
1-- metal hoses, 2-- control valves, 3-- snap joints, 4-- air bags collector, 5-air bag, 6-angle pulley
Mechanism, 7-source of the gas.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
A kind of maintenance air bag of LNG butterfly valves, including air bag (5), metal hose (1), control valve (2), snap joint
(3), air bag (5), and be connected on source of the gas (7), air bag (5) is accommodated on air bag collector (4).
During utility model works, the control button of control valve is pressed, air bag collector is inflated.
Certain LNG butterfly valve is connected with LNG storage tank, and the confirmed valve needs dismounting maintenance comprehensively.
LNG butterfly valve service hatches are first turned on, air bag is put into LNG pipelines using conveyer, Inlet gas connector is connected, plus
Device of air.Open LNG aerators, make ventilation in air bag, gasbag pressure is not less than 0.5MPa, confirm air bag by LNG pipelines with
Valve all separates, by LNG butterfly valve manholes, is passed through nitrogen displacement, replaces qualified and LNG butterfly valves and recovers after normal temperature, carries out
Maintenance.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of maintenance air bag of LNG butterfly valves, air bag is put into LNG pipelines, the sealing repaired for LNG butterfly valves, its feature
It is：Including air bag, metal hose, control valve, snap joint, and it is sequentially connected；The air bag is accommodated in air bag collector
In.
2. a kind of maintenance air bag of LNG butterfly valves according to claim 1, it is characterised in that：The control valve is provided with and opened
Close.
3. a kind of maintenance air bag of LNG butterfly valves according to claim 2, it is characterised in that：On the air bag collector also
Provided with angle pulley mechanism.
4. a kind of maintenance air bag of LNG butterfly valves according to claim 3, it is characterised in that：The snap joint is located at institute
State control valve outlet.
5. a kind of maintenance air bag of LNG butterfly valves according to claim 3, it is characterised in that：The air bag collector is provided with
One complete air bag, ventilation rear gasbag sealing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621029880.6U CN206458891U (en) | 2016-08-31 | 2016-08-31 | A kind of maintenance air bag of LNG butterfly valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621029880.6U CN206458891U (en) | 2016-08-31 | 2016-08-31 | A kind of maintenance air bag of LNG butterfly valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458891U true CN206458891U (en) | 2017-09-01 |
Family
ID=59690784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621029880.6U Active CN206458891U (en) | 2016-08-31 | 2016-08-31 | A kind of maintenance air bag of LNG butterfly valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458891U (en) |
-
2016
- 2016-08-31 CN CN201621029880.6U patent/CN206458891U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 351100 No. 666, Xiangang Avenue, Fengting Town, Xianyou Economic Development Zone, Putian City, Fujian Province Patentee after: CNOOC (Fujian) emergency maintenance Co.,Ltd. Address before: 351100 No. 666, Xiangang Avenue, Fengting Town, Xianyou Economic Development Zone, Putian City, Fujian Province Patentee before: FUJIAN CNOOC EMERGENCY MAINTENANCE CO.,LTD. Address after: 351100 No. 666, Xiangang Avenue, Fengting Town, Xianyou Economic Development Zone, Putian City, Fujian Province Patentee after: National pipe network group (Fujian) emergency maintenance Co.,Ltd. Address before: 351100 No. 666, Xiangang Avenue, Fengting Town, Xianyou Economic Development Zone, Putian City, Fujian Province Patentee before: CNOOC (Fujian) emergency maintenance Co.,Ltd. |