CN206582538U - A kind of protection device of LNG vacuum pipe expansion joint - Google Patents
A kind of protection device of LNG vacuum pipe expansion joint Download PDFInfo
- Publication number
- CN206582538U CN206582538U CN201621154200.3U CN201621154200U CN206582538U CN 206582538 U CN206582538 U CN 206582538U CN 201621154200 U CN201621154200 U CN 201621154200U CN 206582538 U CN206582538 U CN 206582538U
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- Prior art keywords
- vacuum
- pressing plate
- expansion joint
- lng
- protection device
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Abstract
The utility model discloses a kind of protection device of LNG vacuum pipe expansion joint; including vacuum tube, the vacuum nozzle being arranged on vacuum tube, the vacuum plug and flexible supporting frames that are arranged in vacuum nozzle; the outer wall of the vacuum plug is provided with the seal with the inwall cooperation of vacuum nozzle; the flexible supporting frames are arranged on vacuum tube outer end; the flexible supporting frames include pressing plate; anti-slip cap is welded with the middle of the pressing plate, the anti-slip cap is set in the vacuum nozzle outer end；Screw rod is provided with pressing plate, a diameter of 10 mm screw is provided with the mm of edge 10 at pressing plate two ends, the screw rod is arranged on by locking nut in the screw at pressing plate two ends.The utility model is novel in design, simple in construction, can effectively prevent because of vacuum pipe expansion joint contraction crack gas leakage, causes vacuum plug to eject, the phenomenon in a large amount of natural gas leakings to pipe trench, can be widely used for LNG filling field.
Description
Technical field
The utility model is related to LNG loading techniques field, and in particular to a kind of protection device of LNG vacuum pipe expansion joint.
Background technology
Recently as the use of China's economic development, and clean energy resource natural gas so that conveying liquid oxygen, liquid nitrogen and liquid
The high vacuum pipe for changing natural gas is used widely.LNG largely applies to automobile filling as a kind of new clean energy resource,
City is civilian, gas peak regulation, peak regulation of power plant, and the field such as other industrial gas.And as being exclusively used in LNG automobile filling stations
Skid-mounted device, LNG pipelines are then responsible for the function of transportation of liquefied natural gas, in the design of liquefied natural gas transfer pipeline, pipeline
Cold insulation, sealing means are the problem of be then one extremely important.
LNG station LNG vacuum tubes are located in gas station pipe trench, and temperature during work is from -196 DEG C to 20 DEG C of normal temperature, this
Under internal-external temperature difference effect, hair produces radial direction and axis shift, and with the generation of thermal (temperature difference) stress, so to reduce Temperature Difference Load
Influence, LNG vacuum pipe expansion joint plays the important and pivotal role in vacuum pipe equipment, and expansion energy-conservation effectively reduces temperature
The effect of poor displacement, but be due to the thinner thickness of general expansion joint, length is longer, to large diameter pipeline, and low temperature is situated between in pipe
Under matter Action of Gravity Field, expansion joint will produce flexural deformation, and the expansion joint of vacuum tube is easily broken Lou by shrinking for a long time
Gas, causes the vacuum nozzle plug of vacuum tube to eject, substantial amounts of natural gas leaking to pipe trench brings great danger to gas station,
Therefore need effectively to protect expansion joint, install a protection device additional to LNG vacuum nozzles, the natural gas when expansion joint ruptures
Pipe trench can not be leaked into, the safety coefficient of vacuum tube is improved.But, existing protection device generally existing troublesome poeration, maintenance
Cycle is short, the problems such as be easily caused leakage during closure.
Chinese patent application publication No. CN204061360U, data of publication of application：It is on December 23rd, 2014, entitled《It is a kind of
Bellows-type vacuum extractor》Utility model application patent in, disclose a kind of bellows-type vacuum extractor, including take out true
Empty mouth, valve body, valve rod, valve element, the valve port of the valve body lower end are connected by double sealing circle with vacuumizing mouth, are socketed in valve body
Valve element, valve element top seal is connected to valve body upper end, and the valve element lower end is connected with the plug vacuumized in mouth；In the valve element
Valve rod is socketed, it is high that it vacuumizes closure success rate, it is to avoid the shortcoming of pull bar dynamic sealing, but pull bar and valve body use KF interfaces
Connection, cumbersome, clip easily drops loss；Bellows bears moment of torsion in operating process, is easily damaged；Frock and workpiece are close
Seal is compressed without oblique, and sealed ring deformation is big, and the replacement cycle is short.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of simple in construction, reasonable in design,
Easy to use, efficient, service life is long, and maintenance period is long, the protection device of the LNG vacuum pipe expansion joints of No leakage, with effective
The problem of solving in background technology.
In order to solve the above technical problems, the utility model provides following technical scheme：
A kind of protection device of LNG vacuum pipe expansion joint, including vacuum tube, the vacuum nozzle being arranged on vacuum tube, setting
Vacuum plug and flexible supporting frames in vacuum nozzle, the outer wall of the vacuum plug are provided with and the inwall cooperation of vacuum nozzle
Seal, the flexible supporting frames are arranged on vacuum tube outer end, and the flexible supporting frames include welding in the middle of pressing plate, the pressing plate
There is anti-slip cap, the anti-slip cap is set in the vacuum nozzle outer end；Screw rod is provided with pressing plate, at pressing plate two ends apart from edge
A diameter of 10mm screw is provided with 10mm, the screw rod is arranged on by locking nut in the screw at pressing plate two ends.
Further, seal groove is provided with the outside of the vacuum plug, is set between the vacuum plug and vacuum nozzle
There are several O-ring seals, the O-ring seal is located in seal groove, the top of the vacuum nozzle, which has, makes O-ring seal quilt
The oblique ramp structure for being pressed on seal groove.
Further, the screw rod is U-shaped, and a diameter 10mm, long 300mm transparent modeling are interspersed with the screw rod
Expects pipe.
Further, the long 150mm of the pressing plate, width 40mm, thickness 8mm, the pressing plate are processed using stainless steel.
Further, a diameter of 38mm of the anti-slip cap, high 8mm, thickness 1mm.
Further, the screw diameter is that 8mm, length are 350mm, the screw rod processed using stainless steel and
Into.
The beneficial effects of the utility model are：Compared with prior art, sealing effectiveness of the present utility model more preferably, prevents
Leakage problem during closure, it is easy to use, efficient；In addition, the vacuum nozzle in each vacuum tube is equipped with vacuum plug,
In actual use, once occurring vacuum tracheal rupture gas leakage, the situation for causing the vacuum plug of vacuum nozzle to eject, installed in this
Protection device on vacuum pipe expansion joint will play a part of preventing vacuum plug from ejecting, and prevent the natural gas in vacuum tube from leading to
The damaged expansion joint leakage is crossed, does not influence the normal of other vacuum tubes to use, overall structure is simple, and service life is long, safeguards
Cycle is long, practical, it is easy to promote the use of.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the partial structural diagram of the protection device of LNG vacuum pipe expansion joints in the utility model embodiment；
Fig. 2 is the structural representation of flexible supporting frames described in the utility model embodiment；
Fig. 3 is the front view of the protection device of LNG vacuum pipe expansion joints in the utility model embodiment.
In figure：1st, vacuum nozzle, 2, vacuum plug, 3, O-ring seal, 4, ramp structure, 5, seal, 6, vacuum tube, 7,
Seal groove, 10, flexible supporting frames, 11, pressing plate, 12, screw rod, 13, anti-slip cap, 14, locking nut.
Embodiment
The technical scheme in the utility model embodiment will be clearly and completely described below, it is clear that described
Embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Fig. 1 to Fig. 3 is referred to, the utility model embodiment includes：
A kind of protection device of LNG vacuum pipe expansion joint, including vacuum tube 6, be arranged on vacuum tube 6 vacuum nozzle 1, set
Put vacuum plug 2 and flexible supporting frames 10 in vacuum nozzle 1, the outer wall of the vacuum plug 2 be provided with vacuum nozzle 1
The seal 5 that wall coordinates, the flexible supporting frames 10 are arranged on the outer end of vacuum tube 6, and the flexible supporting frames 10 include pressing plate
11, the long 150mm of the pressing plate 11, width 40mm, thickness 8mm, the pressing plate 11 are processed using stainless steel, the pressing plate
Anti-slip cap 13 is welded with the middle of 11, a diameter of 38mm of the anti-slip cap 13, high 8mm, thickness 1mm, the anti-slip cap 13 are set in institute
State the outer end of vacuum nozzle 1；Screw rod 12 is provided with pressing plate 11, the screw rod 12 is U-shaped, a diameter of 8mm of the screw rod 12, length
Spend for 350mm, the screw rod 12 is processed using stainless steel, and diameter 10mm, a length are interspersed with the screw rod 12
300mm lucite pipe, a diameter of 10mm screw, the screw rod 12 are provided with the two ends of pressing plate 11 at edge 10mm
In the screw that the two ends of pressing plate 11 are arranged on by locking nut 14.
Preferably, the outside of vacuum plug 2 is provided with seal groove, set between the vacuum plug 2 and vacuum nozzle 1
Several O-ring seals 3 are equipped with, the O-ring seal 3 is located in seal groove 7, the top of the vacuum nozzle 1 is O-shaped close with making
Seal 3 is by the oblique ramp structure 4 for being pressed on seal groove 7.
The beneficial effects of the utility model are：Compared with prior art, sealing effectiveness of the present utility model more preferably, prevents
Leakage problem during closure, it is easy to use, efficient；In addition, the vacuum nozzle in each vacuum tube is equipped with vacuum plug,
In actual use, once occurring vacuum tracheal rupture gas leakage, the situation for causing the vacuum plug of vacuum nozzle to eject, installed in this
Protection device on vacuum pipe expansion joint will play a part of preventing vacuum plug from ejecting, and prevent the natural gas in vacuum tube from leading to
The damaged expansion joint leakage is crossed, does not influence the normal of other vacuum tubes to use, overall structure is simple, and service life is long, safeguards
Cycle is long, practical, it is easy to promote the use of.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model description, or directly or indirectly it is used in other phases
The technical field of pass, is similarly included in scope of patent protection of the present utility model.
Claims (6)
1. a kind of protection device of LNG vacuum pipe expansion joint, including vacuum tube, be arranged on vacuum tube vacuum nozzle, be arranged on
Vacuum plug and flexible supporting frames in vacuum nozzle, it is characterised in that the outer wall of the vacuum plug is provided with and vacuum nozzle
The seal that inwall coordinates, the flexible supporting frames are arranged on vacuum tube outer end, and the flexible supporting frames include pressing plate, the pressure
Anti-slip cap is welded with the middle of plate, the anti-slip cap is set in the vacuum nozzle outer end；Screw rod is provided with pressing plate, in pressing plate two
End is provided with a diameter of 10 mm screw at the mm of edge 10, and the screw rod is arranged on pressing plate two ends by locking nut
In screw.
2. a kind of protection device of LNG vacuum pipe expansion joint according to claim 1, it is characterised in that the vacuum plug
Outside be provided with seal groove, several O-ring seals, the O-shaped sealing are provided between the vacuum plug and vacuum nozzle
Circle is located in seal groove, and the top of the vacuum nozzle, which has, makes O-ring seal by the oblique ramp structure for being pressed on seal groove.
3. a kind of protection device of LNG vacuum pipe expansion joint according to claim 1, it is characterised in that the screw rod is in U
A mm of diameter 10, long 300 mm lucite pipe are interspersed with type, the screw rod.
4. a kind of protection device of LNG vacuum pipe expansion joint according to claim 1, it is characterised in that the pressing plate length 150
Mm, wide 40 mm, thick 8 mm, the pressing plate are stainless steel.
5. a kind of protection device of LNG vacuum pipe expansion joint according to claim 1, it is characterised in that the anti-slip cap is straight
Footpath is 38 mm, high 8 mm, thick 1 mm.
6. a kind of protection device of LNG vacuum pipe expansion joint according to claim 1, it is characterised in that the screw diameter
It is 350 mm for 8 mm, length, the screw rod is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154200.3U CN206582538U (en) | 2016-10-31 | 2016-10-31 | A kind of protection device of LNG vacuum pipe expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154200.3U CN206582538U (en) | 2016-10-31 | 2016-10-31 | A kind of protection device of LNG vacuum pipe expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206582538U true CN206582538U (en) | 2017-10-24 |
Family
ID=60109369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621154200.3U Expired - Fee Related CN206582538U (en) | 2016-10-31 | 2016-10-31 | A kind of protection device of LNG vacuum pipe expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206582538U (en) |
-
2016
- 2016-10-31 CN CN201621154200.3U patent/CN206582538U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20191031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |