CN208634399U - A kind of LNG ultralow temperature butterfly valve - Google Patents
A kind of LNG ultralow temperature butterfly valve Download PDFInfo
- Publication number
- CN208634399U CN208634399U CN201821418143.4U CN201821418143U CN208634399U CN 208634399 U CN208634399 U CN 208634399U CN 201821418143 U CN201821418143 U CN 201821418143U CN 208634399 U CN208634399 U CN 208634399U
- Authority
- CN
- China
- Prior art keywords
- valve
- maintenance
- butterfly plate
- valve seat
- butterfly
- 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.)
- Active
Links
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a kind of LNG ultralow temperature butterfly valves, it include valve body, extension valve rod, butterfly plate, valve seat, long-neck valve deck and transmission device, butterfly plate sealing ring compatible with valve seat is socketed on butterfly plate, butterfly plate sealing ring and valve seat form a sealing pair, the valve inner is provided with compatible with valve seat side three and opens snap ring, and valve body opens snap ring side close to three and is provided with lengthening part, the manhole for being provided with maintenance portion on lengthening part and being provided in maintenance portion, maintenance valve deck compatible with manhole is provided in maintenance portion, the one end in maintenance portion is hingedly connected to one another by setting valve deck pivot pin and maintenance valve deck, at least one clamping apparatus is additionally provided in maintenance portion, maintenance portion is mutually clamped with maintenance valve deck by clamping apparatus and is connect, service valve covers the valve deck handle being provided with its integral type.Simple and reasonable, the good airproof performance of the LNG ultralow temperature butterfly valve, it is convenient to dismount, and maintenance is convenient, long service life.
Description
Technical field
The utility model relates to valve technology fields, and in particular to a kind of LNG ultralow temperature butterfly valve.
Background technique
Liquefied natural gas (LNG) be it is a kind of cleaning, the efficient energy.Under the increasingly significant background of environmental problem, naturally
Gas is more and more favored as clean energy resource.Due to this trend, natural gas application technology is also rapidly developed, in liquid
Its transport field that is efficient and being well used of change natural gas, because is especially true.Also more focus on drawing LNG in recent years in China
Into, a large amount of LNG receiving station is arranged coastal, and LNG needs to use a large amount of valve from producing into the whole flow process of consumption
Door, such valve belong to one of cryogenic valve.For butterfly valve with the fastest developing speed in recent years, in the utilization of LNG
Also more important.LNG ultralow temperature butterfly valve has flange, lug, to connection sides such as folder and butt welding according to the requirement of applying working condition
Formula.But due to the ignitability and explosivity of LNG, the safety of the matched LNG Subzero valve of system equipment, reliability ratio are common
The requirement of Subzero valve is higher, and requires refractory design.Therefore, LNG ultralow temperature butterfly valve Trunk Line mostly uses butt welding knot
Structure design.
205371655 U of Chinese patent literature CN discloses ultralow temperature butterfly valve on July 6th, 2017, and the utility model mentions
For a kind of ultralow temperature butterfly valve, including valve body, valve rod and butterfly plate component, fixed valve seat in the cavity of the valve body, and by valve seat every
Break as the liquid outlet channel of the feed pathway in left side, right side；The butterfly plate component by the metal set gradually from left to right pressing plate,
The butterfly plate of nonmetallic sealing ring and metal is connected and forms, and the valve seat and sealing ring sealing cooperate；It is set on the right side of the butterfly plate
There is valve rod hole, the valve rod is plugged in valve rod hole.In the utility model, the sealing pair between valve seat and butterfly plate component is used
Metal material and nonmetallic materials composite construction form, making butterfly valve, sealing effect is more preferable at low ambient temperatures, No leakage.
Although the patent by setting manhole and access cover, allow service personnel need not be disintegrated by inspection hole or
Whole deck valve door is scrapped, replacement sealing ring more simple and flexible extends the service life of valve, but in maintenance process, access cover
There is dismount cumbersome and disassembly rear bolt not having suitable position storage to be easy the problem of losing.
Utility model content
For the deficiency of background technique, the utility model provides a kind of LNG ultralow temperature butterfly valve, can effectively solve existing
The problem of technology.
The technical scheme adopted by the utility model is a kind of LNG ultralow temperature butterfly valve, includes valve body, extension valve rod, butterfly
Plate, valve seat, long-neck valve deck and transmission device, are socketed with butterfly plate sealing ring compatible with valve seat on butterfly plate, butterfly plate sealing ring and
Valve seat forms a sealing pair, and the valve inner is provided with compatible with valve seat side three and opens snap ring, and valve body is opened close to three
Snap ring side is provided with lengthening part, the manhole that maintenance portion is provided on lengthening part and is provided in maintenance portion, in maintenance portion
It is provided with maintenance valve deck compatible with manhole, the one end in maintenance portion is hinged by setting valve deck pivot pin and maintenance valve deck
It connects, at least one clamping apparatus is additionally provided in maintenance portion, maintenance portion passes through clamping apparatus and the maintenance valve deck mutually company of clamping
It connects, service valve covers the valve deck handle being provided with its integral type.
Further, the clamping apparatus include upper connecting pin, lower connecting pin and threaded connection clamping bolt and
It is clamped nut, upper connecting pin and lower connecting pin are an integral structure setting, upper connection with the maintenance valve deck and maintenance portion respectively
Be provided on end with the compatible clamping groove of clamping bolt, lower connecting pin by nut pivot pin be clamped nut and be hinged company
It connects.
Further, the maintenance portion and service valve, which cover, is provided with compatible maintenance groove and maintenance protrusion, and examines
It repairs and is folded with maintenance sealing ring between groove and maintenance protrusion.
Further, described three the holding screw for being provided with and being distributed uniformly and circumferentially on snap ring is opened, holding screw
Tail end is mutually compressed with the valve seat.
Further, it is respectively arranged on the valve interior wall recessed positioned at the positioning step of the valve seat two sides and positioning
Slot is provided with described three in positioning groove and opens snap ring, and positioning groove and three is opened snap ring and mutually interconnected by interference fit type
It connects.
Further, the sealing surface of the valve seat and butterfly plate sealing ring is set as oval scalene cone, and valve seat and butterfly plate are close
Seal is that metal material is made, and valve seat side is provided with limited step compatible with the positioning step, positioning step with
Valve seat insert is folded between limited step.
Further, it is socketed with matched pressing ring on the butterfly plate, and is folded between pressing ring and butterfly plate described
Butterfly plate sealing ring, pressing ring and butterfly plate are mutually permanently connected by the way that fixing screws are arranged.
Further, the long-neck valve, which covers, is socketed with matched drain pan, and drain pan passes through arc welding mode
It is mutually permanently connected with long-neck valve deck.
The beneficial effects of the utility model are: the structure of the LNG ultralow temperature butterfly valve is simple due to taking above-mentioned technical proposal
Rationally, the one end in maintenance portion is hingedly connected to one another by setting valve deck pivot pin and maintenance valve deck, and maintenance is additionally provided at least in portion
One clamping apparatus, maintenance portion are mutually clamped with maintenance valve deck by clamping apparatus and are connect, effectively prevented in maintenance process
Access cover dismounting is cumbersome and disassembly rear bolt is easy the problem of losing, and substantially increases the overall performance of LNG ultralow temperature butterfly valve,
Good airproof performance, it is convenient to dismount, and maintenance is convenient, long service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the schematic diagram of clamping apparatus 13 in Fig. 1.
Fig. 3 is the partial enlargement diagram in Fig. 2 at A.
1, valve body in figure；2, extension valve rod；3, butterfly plate；4, valve seat；5, long-neck valve deck；6, transmission device；7, butterfly plate seals
Circle；8, three snap ring is opened；9, maintenance portion；10, manhole；11, valve deck is overhauled；12, valve deck pivot pin；13, clamping apparatus；13a, upper company
Connect end；13b, lower connecting pin；13c, clamping bolt；13d, clamping nut；14, valve deck handle；15, maintenance protrusion；16, it overhauls close
Seal；17, holding screw；18, positioning step；19, limited step；20, valve seat insert；21, pressing ring；22, fixing screws；
23, drain pan.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
As shown in Fig. 1 to 3, a kind of LNG ultralow temperature butterfly valve includes valve body 1, extension valve rod 2, butterfly plate 3, valve seat 4, long-neck
Valve deck 5 and transmission device 6 are socketed with butterfly plate sealing ring 7 compatible with valve seat 4,4 shape of butterfly plate sealing ring 7 and valve seat on butterfly plate 3
At a sealing pair, the valve body 1 is internally provided with compatible with 4 side of valve seat three and opens snap ring 8, and valve body 1 opens card close to three
8 side of ring is provided with lengthening part, the manhole 10 that maintenance portion 9 is provided on lengthening part and is provided in maintenance portion 9, maintenance portion
Maintenance valve deck 11 compatible with manhole 10 is provided on 9, the one end in maintenance portion 9 passes through setting valve deck pivot pin 12 and service valve
Lid 11 is hingedly connected to one another, and is additionally provided at least one clamping apparatus 13 in maintenance portion 9, maintenance portion 9 by clamping apparatus 13 with
Overhaul valve deck 11 mutually clamping connection, clamping apparatus 13 can effectively prevent in maintenance process overhaul valve deck 11 dismount it is cumbersome with
And disassembly rear bolt is easy the problem of losing, and overhauls the valve deck handle 14 being provided on valve deck 11 with its integral type, valve deck handle
14 easy access valve decks 11 are opened.
The clamping apparatus 13 includes the clamping bolt 13c of upper connecting pin 13a, lower connecting pin 13b and threaded connection
It is respectively integral type knot with the maintenance valve deck 11 and maintenance portion 9 with clamping nut 13d, upper connecting pin 13a and lower connecting pin 13b
Structure is arranged, and clamping groove compatible with clamping bolt 13c is provided on upper connecting pin 13a, and lower connecting pin 13b passes through nut pivot pin
With clamping nut 13d be hingedly connected to one another, unscrew clamping bolt 13c and carry out rotation allow to be detached from out of clamping groove, from
And maintenance valve deck 11 can be started, clamping bolt 13c is screwed into clamping groove and is tightened, just maintenance valve deck 11 can be locked
It is fixed.
It is provided with compatible maintenance groove and maintenance protrusion 15 on the maintenance portion 9 and maintenance valve deck 11, and is overhauled recessed
Maintenance sealing ring 16 is folded between slot and maintenance protrusion 15, maintenance sealing ring 16 prevents from leaking at maintenance valve deck 11.
Described three open the holding screw 17 for being provided with and being distributed uniformly and circumferentially on snap ring 8, the tail end of holding screw 17
It is mutually compressed with the valve seat 4, holding screw 17 is set as interior hexagonal cylindrical head holding screw, and holding screw 17 is firm by valve seat 4
Securely due in valve body 1, valve seat 4 can be replaced by backing out holding screw 17.
It is respectively arranged with positioning step 18 and positioning groove positioned at 4 two sides of valve seat on 1 inner wall of valve body, positions
Step 18 prevents valve seat 4 from sliding, and described three are provided in positioning groove and open snap ring 8, and positioning groove and three opens snap ring 8
It is connected with each other by interference fit type.
The sealing surface of the valve seat 4 and butterfly plate sealing ring 7 is set as oval scalene cone, and valve seat 4 and butterfly plate sealing ring 7 are equal
It is made of metal material, butterfly plate sealing ring 7 is made of metal material and avoids nonmetallic sealing ring and use at low ambient temperatures
The lost of life and the problem of reduce leakproofness, 4 side of valve seat is provided with limited step 19 compatible with the positioning step 18,
Valve seat insert 20 is folded between positioning step 18 and limited step 19, valve seat insert 20 prevents from leaking at valve seat 4.
It is socketed with matched pressing ring 21 on the butterfly plate 3, and is folded with the butterfly between pressing ring 21 and butterfly plate 3
Plate sealing ring 7, pressing ring 21 and butterfly plate 3 are mutually permanently connected by the way that fixing screws 22 are arranged, and fixing screws 22 are set as interior hexagonal
Fillister head screw.
Matched drain pan 23 is socketed on the long-neck valve deck 5, drain pan 23 passes through arc welding mode and length
Neck valve deck 5 is mutually permanently connected.
It is described that the use process is as follows: when butterfly plate sealing ring 7 and the damage of valve seat 4 lead to valves leakage, adjusting clamping dress
Set 13 turn clamping bolt 13c make be clamped bolt 13c be detached from from the clamping groove of upper connecting pin 13a, service valve can be raised
Lid 11 dismantles holding screw 17 and fixing screws 22 using specific purpose tool simultaneously by manhole 10, that is, can be taken off pressing ring 21, butterfly
Plate sealing ring 7, three opens snap ring 8 and valve seat 4, and changes new butterfly plate sealing ring or valve seat again, will finally overhaul valve deck
11 lids merge screws on clamping bolt 13c again.
The beneficial effects of the utility model are: the structure of the LNG ultralow temperature butterfly valve is simple due to taking above-mentioned technical proposal
Rationally, the one end in maintenance portion 9 is hingedly connected to one another by setting valve deck pivot pin 12 and maintenance valve deck 11, is also set up in maintenance portion 9
There is at least one clamping apparatus 13, maintenance portion 9 is connected by clamping apparatus 13 and the mutually clamping of maintenance valve deck 11, effectively prevented
Access cover dismounting is cumbersome in maintenance process and disassembly rear bolt is easy the problem of losing, and substantially increases LNG ultralow temperature butterfly
The overall performance of valve, good airproof performance, it is convenient to dismount, and maintenance is convenient, long service life.
Every technical staff's notice: although the utility model is described according to above-mentioned specific embodiment, this
The invention thought of utility model is not limited to that utility model, and any repacking with inventive concept will all be included in this specially
In sharp scope of patent protection.
Claims (8)
1. a kind of LNG ultralow temperature butterfly valve includes valve body, extension valve rod, butterfly plate, valve seat, long-neck valve deck and transmission device, butterfly plate
On be socketed with butterfly plate sealing ring compatible with valve seat, butterfly plate sealing ring and valve seat form a sealing pair, it is characterised in that: described
Valve inner is provided with compatible with valve seat side three and opens snap ring, and valve body opens snap ring side close to three and is provided with lengthening part,
The manhole for being provided with maintenance portion on lengthening part and being provided in maintenance portion is provided in maintenance portion compatible with manhole
Valve deck is overhauled, the one end in maintenance portion is hingedly connected to one another by setting valve deck pivot pin and maintenance valve deck, and maintenance is additionally provided in portion
At least one clamping apparatus, maintenance portion are mutually clamped and are connect with maintenance valve deck by clamping apparatus, service valve cover be provided with and
The valve deck handle of its integral type.
2. a kind of LNG ultralow temperature butterfly valve according to claim 1, it is characterised in that: the clamping apparatus includes upper company
Connect the clamping bolt and clamping nut at end, lower connecting pin and threaded connection, upper connecting pin and lower connecting pin respectively with the inspection
It repairs valve deck and maintenance portion is an integral structure setting, clamping groove compatible with clamping bolt, lower company are provided on upper connecting pin
End is connect to be hingedly connected to one another by nut pivot pin and clamping nut.
3. a kind of LNG ultralow temperature butterfly valve according to claim 1 or 2, it is characterised in that: the maintenance portion and maintenance valve deck
On be provided with compatible maintenance groove and maintenance protrusion, and overhaul groove and maintenance protrusion between be folded with maintenance sealing ring.
4. a kind of LNG ultralow temperature butterfly valve according to claim 1, it is characterised in that: described three open and are provided with edge on snap ring
The equally distributed holding screw of circumferencial direction, the tail end of holding screw are mutually compressed with the valve seat.
5. a kind of LNG ultralow temperature butterfly valve according to claim 4, it is characterised in that: be respectively set on the valve interior wall
There are the positioning step and positioning groove positioned at the valve seat two sides, described three are provided in positioning groove and open snap ring, and are positioned
Groove and three open snap ring pass through interference fit type be connected with each other.
6. a kind of LNG ultralow temperature butterfly valve according to claim 5, it is characterised in that: the valve seat and butterfly plate sealing ring
Sealing surface is set as oval scalene cone, and valve seat and butterfly plate sealing ring are that metal material is made, and valve seat side is provided with and institute
The compatible limited step of positioning step is stated, valve seat insert is folded between positioning step and limited step.
7. a kind of LNG ultralow temperature butterfly valve according to claim 1, it is characterised in that: be socketed on the butterfly plate and its phase
The pressing ring of adaptation, and be folded with the butterfly plate sealing ring, pressing ring and butterfly plate between pressing ring and butterfly plate and pass through setting fixing screws
It is mutually permanently connected.
8. a kind of LNG ultralow temperature butterfly valve according to claim 1, it is characterised in that: the long-neck valve cover be socketed with
Its compatible drain pan, drain pan are mutually permanently connected by arc welding mode and long-neck valve deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821418143.4U CN208634399U (en) | 2018-08-31 | 2018-08-31 | A kind of LNG ultralow temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821418143.4U CN208634399U (en) | 2018-08-31 | 2018-08-31 | A kind of LNG ultralow temperature butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634399U true CN208634399U (en) | 2019-03-22 |
Family
ID=65743382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821418143.4U Active CN208634399U (en) | 2018-08-31 | 2018-08-31 | A kind of LNG ultralow temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664664A (en) * | 2021-01-12 | 2021-04-16 | 芜湖市金贸流体科技股份有限公司 | Telescopic butterfly valve convenient to maintain and control method thereof |
-
2018
- 2018-08-31 CN CN201821418143.4U patent/CN208634399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664664A (en) * | 2021-01-12 | 2021-04-16 | 芜湖市金贸流体科技股份有限公司 | Telescopic butterfly valve convenient to maintain and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205020060U (en) | Ward off fast open sight glass hand hole device of glass | |
| CN208634399U (en) | A kind of LNG ultralow temperature butterfly valve | |
| CN203656173U (en) | Lock ring type quick opening and closing blind plate device | |
| CN204004559U (en) | A kind of sampling T-way valve | |
| CN208616155U (en) | Flush type hatch board and ship | |
| CN213145432U (en) | All-welded ball valve | |
| CN202109119U (en) | Connector structure of liquid gas storage tank | |
| CN108082763A (en) | A kind of discharger opens hand hole device soon | |
| CN208531306U (en) | A kind of environment-friendly dustless and prevention flies quick opening manhole's integrated apparatus of material damage | |
| CN210265853U (en) | Crusher bearing block end cover sealing device | |
| CN209480422U (en) | Sliding cover type manhole | |
| CN210068994U (en) | Pneumatic rotary disk valve | |
| CN206806917U (en) | A kind of cable branch box body structure | |
| CN219221415U (en) | Sealing structure for large valve body ash drawing port | |
| CN220918457U (en) | Filter element cleaning device of negative pressure conveying equipment in lithium battery industry | |
| CN210661747U (en) | Manual flanging joint device for water quality analyzer | |
| CN214743477U (en) | High-sealing spherical stop valve capable of preventing misoperation | |
| CN210757516U (en) | Change valve bearing's auxiliary fixtures | |
| CN208858977U (en) | A kind of ceramic plug valve being easily changed filter core | |
| CN208565638U (en) | A kind of pipe gas self-closing valve | |
| CN210890132U (en) | Automatic compensation bidirectional hard seal butterfly valve | |
| CN218818274U (en) | Blind plate valve with replaceable structure | |
| CN217131346U (en) | Detachable on-vehicle diesel oil kitchen range of nozzle | |
| CN218326710U (en) | Detachable power station valve | |
| CN2227241Y (en) | Sealed changable sluice valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |