CN206290823U - A kind of high-performance LNG seals ultralow temperature butterfly valve with hard - Google Patents
A kind of high-performance LNG seals ultralow temperature butterfly valve with hard Download PDFInfo
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- CN206290823U CN206290823U CN201621333261.6U CN201621333261U CN206290823U CN 206290823 U CN206290823 U CN 206290823U CN 201621333261 U CN201621333261 U CN 201621333261U CN 206290823 U CN206290823 U CN 206290823U
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Abstract
The utility model is related to a kind of high-performance LNG with hard sealing ultralow temperature butterfly valve, valve body is provided with fluid passage, valve rod and butterfly plate are located in valve body, butterfly plate is fixedly connected by pin with valve rod, valve stem top is connected with gear, filler group is provided between valve rod and valve body, filler group lower section is provided with filler packing ring, filler group top is sequentially provided with filler pressing sleeve and gland, gland is fixedly connected with the valve body, the valve seals and butterfly plate sealing ring being brought into close contact are provided with valve body and butterfly plate closure, valve seals are inclined-plane with the binding face of butterfly plate sealing ring, valve seals outside is provided with pressing plate, pressing plate is fixedly connected with the valve body, butterfly plate sealing ring outside is provided with butterfly plate trim ring, butterfly plate trim ring is fixedly connected with butterfly plate.Compared with prior art, the utility model is mutually sealed using split type valve seals with butterfly plate sealing ring, and this split-type structural sealing effectiveness is more preferable.
Description
Technical field
The utility model is related to a kind of butterfly valve, and ultralow temperature butterfly valve is sealed with hard more particularly, to a kind of high-performance LNG.
Background technology
Liquefied natural gas (LNG) is a kind of cleaning, the efficient energy.Under the increasingly significant background of environmental problem, naturally
Gas is increasingly favored as clean energy resource.Due to this trend, natural gas application technology is also developed rapidly, in liquid
Change natural gas, because its efficiently and the transport field that is well used is especially true.China also focuses on all the more drawing LNG in recent years
Enter, substantial amounts of LNG receiving stations are arranged and, it is necessary to use substantial amounts of valve in whole flow process of the LNG from producing to consuming coastal
Door, such valve belongs to one of cryogenic valve.For as butterfly valve with the fastest developing speed in recent years, in the utilization of LNG
Also it is important all the more.And the country is still a blank to LNG ultralow temperature butterfly valves.Therefore, developing LNG uses ultralow temperature butterfly
Valve is imperative.The series of valves mainly for LNG operating mode media, 150~600lb of nominal pressure (1lb=0.454kg), if
- 196 DEG C of temperature in use of meter, inside nominal diameter DN200~DN1000.
Chinese patent CN205173511U discloses a kind of ultralow temperature butterfly valve, including valve body, valve rod, butterfly plate and worm gear dress
Put, the valve body is provided with fluid passage, the valve rod and butterfly plate are located in valve body；The butterfly plate is fixed with valve rod by pin and connected
Connect；The valve stem top is connected with gear；Filler group is provided between the valve rod and valve body；Described filler group lower section is provided with
Filler packing ring；Described filler group includes flexible graphite packing and graphite packing filling；Described filler group top is sequentially provided with filler
Gland and gland；Described filler gland is fixedly connected with the valve body by stud；The gear includes handwheel；Institute
State handwheel outer surface and be provided with anti-slip rubber raised line.Sealing ring is provided with the valve body and butterfly plate closure；The sealing ring outside sets
There is pressing plate；The pressing plate is fixedly connected with the valve body by soket head cap screw.It is provided with and sealing ring at the butterfly plate and valve body closure
The butterfly plate trim ring matched with pressing plate；The butterfly plate trim ring is fixedly connected by soket head cap screw with butterfly plate.The sealing ring is poly-
CTFE is made, and sealing gasket is provided between the butterfly plate trim ring and butterfly plate, and the sealing gasket is made up of polytrifluorochloroethylene.
Sealing ring is plastic material with sealing gasket in ultralow temperature butterfly valve in above-mentioned patent, is soft sealing structure, and soft close
Envelope needs fire prevention, and at high temperature, the material of soft seal occurs leakage, and for cryogenic media, the material of soft seal exists
Its material property can be influenceed under cryogenic media, its sealing effectiveness is influenceed.In addition, sealing ring is overall structure in above-mentioned patent, have
Must unify to change during abrasion.
Utility model content
The purpose of this utility model is exactly to provide a kind of sealing property for the defect for overcoming above-mentioned prior art to exist
Strong, the easy to operate high-performance LNG of high, structural soundness seals ultralow temperature butterfly valve with hard.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of high-performance LNG hard sealing ultralow temperature butterfly valve, including valve body, valve rod, butterfly plate and gear, the valve body
Fluid passage is provided with, the valve rod and butterfly plate are located in valve body, and the butterfly plate is fixedly connected by pin with valve rod, the valve rod
Top is connected with gear, and filler group is provided between the valve rod and valve body, and described filler group lower section is provided with filler packing ring, institute
Stating filler group includes the first filler and the second filler, and described filler group top is sequentially provided with filler pressing sleeve and gland, described
Gland is fixedly connected with the valve body by stud, and the valve seal being brought into close contact is provided with the valve body and butterfly plate closure
Circle and butterfly plate sealing ring, described valve seals and the binding face of butterfly plate sealing ring are inclined-plane, the valve seals outside
Pressing plate is provided with, the pressing plate is fixedly connected with the valve body by the first trip bolt, described butterfly plate sealing ring outside is provided with butterfly plate
Trim ring, the butterfly plate trim ring is fixedly connected by the second trip bolt with butterfly plate.
Valve seal pad is provided between the valve seals and valve body.Described valve seal pad is stainless steel.
Butterfly plate sealing gasket is provided between described butterfly plate sealing ring and butterfly plate.Described butterfly plate sealing gasket is stainless steel
Matter.
The valve seals are stainless steel.
The butterfly plate sealing ring is stainless steel.
Spacer ring is provided with the middle of described filler group, filler component is segmented into upper and lower two parts, upper and lower two parts point by the spacer ring
The first filler and the second filler are not loaded, and described the first filler and the second filler selects graphite packing filling and flexible stone respectively
Black filler.
The body base is provided with bottom, and the bottom is fixedly connected with the valve body by soket head cap screw；On the bottom
Spacer is provided with, the valve rod is arranged on spacer.
The gear includes handwheel, and the handwheel outer surface is provided with anti-slip rubber raised line.
Valve lever bushing is provided between the valve rod bottom and valve body, the valve lever bushing lower end is provided with split ring.
The utility model LNG ultralow temperature butterfly valve is with low-carbon austenitic (CF3, CF3M) as material of main part, and its is resistance to low
Warm nature, resistance to pressure, wear-resisting, anti-corrosion, weldability, intensity, impact toughness, specific elongation rate and structure stability etc. are superior to other
Material.
Compared with prior art, technique effect of the present utility model is as follows：
1st, mutually sealed using split type valve seals and butterfly plate sealing ring between valve body and butterfly plate, it is this split type
Structure can be changed respectively when a sealing ring is damaged wherein, cost-effective；
2nd, in the utility model, valve seals are inclined-plane with the binding face of butterfly plate sealing ring, and sealing effectiveness is more preferable, while
Because its binding face is inclined-plane, sealing property is not interfered with valve inner pressure size, inclined-plane sealing surface is not easy in addition
Influenceed by expanding with heat and contract with cold；
3rd, in the utility model, valve seals are stainless steel with butterfly plate sealing ring, that is to say, that valve body and butterfly
It is hard sealing between plate, soft sealing structure its sealing property compared between is more excellent；
4th, ultralow temperature butterfly valve of the present utility model in sealing relative to existing butterfly valve have be obviously improved, valve rod with
Filler group is set between valve body, and selected filler group is made up of flexible graphite packing and graphite packing filling so that sealing is stronger
It is more stable, and spacer ring is set in the middle part of filler group, filler component is cut into upper and lower two parts, further improve its sealing
Property.
5 and handwheel on anti-slip rubber raised line design that to cause that handwheel is used more convenient.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model ultralow temperature butterfly valve；
Fig. 2 is mplifying structure schematic diagram at I in Fig. 1.
1 is valve body, and 2 is the first trip bolt, and 3 is pressing plate, and 4 is valve seals, and 5 is butterfly plate, and 6 is valve rod, and 7 is pin, 8
It is butterfly plate trim ring, 9 is the second trip bolt, and 10 is valve seal pad, and 11 is filler packing ring, and 12 is the first filler, and 13 is second
Filler, 14 is filler pressing sleeve, and 15 is gland, and 16 is gear, and 17 is bottom, and 18 is spacer, and 19 is valve lever bushing,
20 is butterfly plate sealing ring, and 21 is butterfly plate sealing gasket.
Specific embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of high-performance LNG seals ultralow temperature butterfly valve with hard, as shown in Figure 1 and Figure 2, including valve body 1, valve rod 6, the and of butterfly plate 5
Gear 16, the valve body 1 is provided with fluid passage, and the valve rod 6 and butterfly plate 5 are located in valve body 1, and the butterfly plate 5 passes through
Pin 7 is fixedly connected with valve rod 6, and the top of the valve rod 6 is connected with gear 16, and filler is provided between the valve rod 6 and valve body 7
Group, described filler group lower section is provided with filler packing ring 11, and described filler group includes the first filler 12 and the second filler 13, described filler
Group top is sequentially provided with filler pressing sleeve 14 and gland 15, and described filler gland 15 is fixed with valve body 1 by stud and connected
Connect, the valve seals 4 and butterfly plate sealing ring 20, valve seals 4 being brought into close contact are provided with the valve body 1 and the closure of butterfly plate 5
It is inclined-plane with the binding face of butterfly plate sealing ring 20, the outside of the valve seals 4 is provided with pressing plate 3, and the pressing plate 3 is tight by first
Gu screw 2 is fixedly connected with valve body 1, the outside of butterfly plate sealing ring 20 is provided with butterfly plate trim ring 8, and the butterfly plate trim ring 8 is tight by second
Gu screw 9 is fixedly connected with butterfly plate 5.Valve seal pad 10 is provided between the valve seals 4 and valve body 1.Valve seal pad
10 is stainless steel.Butterfly plate sealing gasket 21 is provided between butterfly plate sealing ring 20 and butterfly plate 5.Butterfly plate sealing gasket 21 is stainless steel
Matter.The valve seals 4 are stainless steel.The butterfly plate sealing ring 20 is stainless steel.Set in the middle of described filler group
There is spacer ring, filler component is segmented into upper and lower two parts by the spacer ring, and upper and lower two parts load the first filler 12 and second and fill out respectively
Material 13, the first filler 12 and the second filler 13 select graphite packing filling and flexible graphite packing respectively.
The bottom of the valve body 1 is provided with bottom 17, and the bottom 17 is fixedly connected by soket head cap screw with valve body 1；It is described
Bottom 17 is provided with spacer 18, and the valve rod 6 is arranged on spacer 18.Valve is provided between the bottom of the valve rod 6 and valve body 1
Bushing 19, the lower end of the valve lever bushing 19 is provided with split ring.The gear 16 includes handwheel, and the handwheel outer surface sets
There is anti-slip rubber raised line.
The utility model LNG ultralow temperature butterfly valve is with low-carbon austenitic (CF3, CF3M) as material of main part, and its is resistance to low
Warm nature, resistance to pressure, wear-resisting, anti-corrosion, weldability, intensity, impact toughness, specific elongation rate and structure stability etc. are superior to other
Material.
The above-mentioned description to embodiment is to be understood that and use practicality for ease of those skilled in the art
It is new.Person skilled in the art obviously can easily make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within protection domain of the present utility model.
Claims (9)
1. a kind of high-performance LNG seals ultralow temperature butterfly valve, including valve body (1), valve rod (6), butterfly plate (5) and gear with hard
(16), the valve body (1) is provided with fluid passage, and the valve rod (6) and butterfly plate (5) are located in valve body (1), the butterfly plate (5)
It is fixedly connected with valve rod (6) by pin (7), the valve rod (6) top is connected with gear (16), the valve rod (6) and valve
Filler group is provided between body (1), described filler group lower section is provided with filler packing ring (11), and described filler group includes the first filler (12)
With the second filler (13), described filler group top is sequentially provided with filler pressing sleeve (14) and gland (15), described filler gland
(15) it is fixedly connected with valve body (1) by stud, it is characterised in that be provided with tight at the valve body (1) and butterfly plate (5) closure
The valve seals (4) of closely connected conjunction and butterfly plate sealing ring (20), described valve seals (4) and the patch of butterfly plate sealing ring (20)
Conjunction face is inclined-plane, and the valve seals (4) outside is provided with pressing plate (3), the pressing plate (3) by the first trip bolt (2) with
Valve body (1) is fixedly connected, and described butterfly plate sealing ring (20) outside is provided with butterfly plate trim ring (8), and the butterfly plate trim ring (8) is by the
Two trip bolts (9) are fixedly connected with butterfly plate (5).
2. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that the valve body
Valve seal pad (10) is provided between sealing ring (4) and valve body (1).
3. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that described butterfly
Butterfly plate sealing gasket (21) is provided between plate sealing ring (20) and butterfly plate (5).
4. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that the valve body
Sealing ring (4) is stainless steel.
5. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that the butterfly plate
Sealing ring (20) is stainless steel.
6. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that described filler
Spacer ring is provided with the middle of group, filler component is segmented into upper and lower two parts by the spacer ring, and upper and lower two parts load the first filler respectively
(12) and the second filler (13), described the first filler (12) and the second filler (13) select graphite packing filling and flexibility respectively
Graphite packing.
7. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that the valve body
(1) bottom is provided with bottom (17), and the bottom (17) is fixedly connected by soket head cap screw with valve body (1)；The bottom (17)
Spacer (18) is provided with, the valve rod (6) is arranged on spacer (18).
8. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that the worm gear
Including handwheel, the handwheel outer surface is provided with anti-slip rubber raised line to device (16).
9. a kind of high-performance LNG according to claim 1 seals ultralow temperature butterfly valve with hard, it is characterised in that the valve rod
(6) valve lever bushing (19) is provided between bottom and valve body (1), valve lever bushing (19) lower end is provided with split ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621333261.6U CN206290823U (en) | 2016-12-07 | 2016-12-07 | A kind of high-performance LNG seals ultralow temperature butterfly valve with hard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621333261.6U CN206290823U (en) | 2016-12-07 | 2016-12-07 | A kind of high-performance LNG seals ultralow temperature butterfly valve with hard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206290823U true CN206290823U (en) | 2017-06-30 |
Family
ID=59098084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621333261.6U Active CN206290823U (en) | 2016-12-07 | 2016-12-07 | A kind of high-performance LNG seals ultralow temperature butterfly valve with hard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206290823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150659A (en) * | 2018-02-12 | 2018-06-12 | 无锡智能自控工程股份有限公司 | Double leval jib elevated-temperature seal butterfly valve |
| CN113983176A (en) * | 2021-10-21 | 2022-01-28 | 上海沪东造船阀门有限公司 | Maritime work ultralow temperature double-valve-seat double-seal butterfly valve |
-
2016
- 2016-12-07 CN CN201621333261.6U patent/CN206290823U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150659A (en) * | 2018-02-12 | 2018-06-12 | 无锡智能自控工程股份有限公司 | Double leval jib elevated-temperature seal butterfly valve |
| CN113983176A (en) * | 2021-10-21 | 2022-01-28 | 上海沪东造船阀门有限公司 | Maritime work ultralow temperature double-valve-seat double-seal butterfly valve |
| CN113983176B (en) * | 2021-10-21 | 2024-06-07 | 上海沪东造船阀门有限公司 | Marine ultralow temperature double-valve seat double-sealing butterfly valve |
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