CN203571170U - Cryogenic stop valve provided with valve cover with compound cooling disks - Google Patents
Cryogenic stop valve provided with valve cover with compound cooling disks Download PDFInfo
- Publication number
- CN203571170U CN203571170U CN201320751393.0U CN201320751393U CN203571170U CN 203571170 U CN203571170 U CN 203571170U CN 201320751393 U CN201320751393 U CN 201320751393U CN 203571170 U CN203571170 U CN 203571170U
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- Prior art keywords
- valve
- valve gap
- winchester disk
- valve rod
- gap
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- Expired - Lifetime
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 150000001875 compounds Chemical class 0.000 title claims abstract description 14
- 210000004907 gland Anatomy 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000006748 scratching Methods 0.000 abstract 1
- 230000002393 scratching effect Effects 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010001541 Akinesia Diseases 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model discloses a cryogenic stop valve provided with a valve cover with compound cooling disks. The cryogenic stop valve comprises a valve body; a valve seat in the middle of the valve body is provided with a valve clack; the upper end of the valve clack is connected with a valve rod; the upper section of the valve rod and a gland packing in a sealing box on the upper part of the valve cover are matched for extension; the valve rod is matched with a T-type nut on a valve cover support and then is connected with an actuator component; the actuator is manual or electric to make a lead screw of the valve rod to carry out rotary motion so as to drive the valve clack to vertically move; the outside of the valve cover is provided with a compound cooling disk structural form of a single large-diameter cooling disk and a plurality of small-diameter cooling disks on the neck. By adopting the cryogenic stop valve, the mean temperature conductivity is improved, a convection cooling area and temperature difference between cool temperature at the periphery of the neck and the ambient environment are increased, the cooling effect is good, the temperature of a sliding fit position of the valve rod and the packing is ensured to be higher than 0 DEG C so as not to generate freezing adhesion, the opening and closing actions of the valve are reliable, frozen hard objects are prevented from scratching the valve rod and the packing, the integral strength of the valve cover and the valve is improved, the cost is reduced and the economic benefit and the reliability are improved.
Description
Technical field
The utility model relates to a kind of deep cooling stop valve, relates in particular to a kind of compound loose Winchester disk valve gap deep cooling stop valve.
Background technique
In-150 ℃ to more than-250 ℃ deep cooling working condition system manufacturing processs of modern LNG Liquefied natural gas, liquid oxygen, liquid hydrogen, liquid helium etc. are controlled automatically, deep cooling stop valve plays a very important role.In this process control,, according to real-time data-signal, open and close the circulation parameter of medium.Between sensitivity, reliability, valve rod and the filler of control action, sealing and life-span are vital.Because the valve stem part hypomere in deep cooling stop valve valve gap is connected with flap, epimere stretched out with flexible cooperation of stuffing box packing in sealed letter, coordinate with the T-shaped nut on valve gap, be connected with final controlling element again, in valve gap, the deep cooling medium in space communicates with valve body, and the structural type of valve gap must have good loose temp effect, guarantees that valve rod and cooperation place, filler bottom temperature are more than 0 ℃, in order to avoid the airborne moisture of Ling Gu and occur freeze bonding, just can guarantee valve opening and closing reliable in action effect.So the loose warm nature of valve gap can fine or not directly have influence on the safe and reliable and economic benefit of system.But in existing technology, deep cooling stop valve valve gap is adopt the loose Winchester disk of monolithic major diameter and lengthen valve gap napex, but single loose Winchester disk radius strengthens, more outer enclosing, the cold temperature that deep cooling medium basal plane transmits and the temperature difference of environment convection current are less, that is to say, have reduced average temperature conductivity, loose warm condition is abundant not, weak effect; Must be by lengthening valve gap napex, but it is little with the area of the loose warm convection current of environment to lengthen the cold temperature of napex peripheral wall, the warm condition of faling apart is also good not, and the oversize meeting of valve rod causes vertical stressed strut buckling, and seal leakage also can reduce the intensity of valve gap, increases cost simultaneously.The loose insufficient meeting of warm condition causes valve rod and the filler place of the being slidably matched bonding of freezing, the large or akinesia of switching motion moment, and the hard thing that freezes scratches valve rod and filler, and deep cooling stop valve is short working life, and replacing is frequently.
Summary of the invention
The utility model provides a kind of compound loose Winchester disk valve gap deep cooling stop valve, improved average temperature conductivity, the cold temperature of napex periphery and surrounding environment have been strengthened to wandering warm area and the temperature difference simultaneously, loose temp effect is splendid, guarantees that valve rod and the filler place of being slidably matched temperature, at 0 ℃, the bonding of freezing does not occur above, guarantees valve opening and closing reliable in action, the hard thing of having stopped to freeze scratches valve rod and filler, increased valve gap and valve bulk strength, reduced cost, increase economic efficiency and security of system reliable.
A kind of compound loose Winchester disk valve gap deep cooling stop valve, it comprises valve body, on the valve seat of valve body middle part, be provided with flap, valve gap is set on valve body, valve body and valve gap are by stud, nut fastener is fixed, flap upper end connects valve rod, by flap cap, fixed, valve rod is through the upper seal support that is located at bonnet lower, and the stuffing box packing in valve gap top seal letter, filler packing ring and filler pressing, filler pressing is provided with Gland, valve rod upwards extends with the T-shaped nut on valve gap and coordinates, finally be connected with handwheel, described T-shaped nut is fixed by lock screw, described Gland and valve gap removably connect, described valve gap outside is provided with the loose Winchester disk of monolithic major diameter and the loose Winchester disk of multiple minor diameter.
Between above-mentioned Gland and valve gap, by bearing pin, cotter pin, swing bolt and hexagon nut fastening piece, connect.
Above-mentioned handwheel is fastening by plain washer and hexagon nut.
Between above-mentioned valve gap and valve body, be provided with seal ring.
The utility model has been obtained following technique effect:
1, the utility model improves warm conductivity λ owing to adopting, increase valve gap and surrounding environment to wandering warm area A, with the thinking of surrounding environment to wandering tri-parameters of warm temperature difference Δ T, the compound loose Winchester disk structural type that the valve gap outside of designing is comprised of the loose Winchester disk of monolithic major diameter and the loose Winchester disk of napex multi-turn minor diameter, reached fabulous loose temp effect, guaranteed that valve rod and cooperation place, filler bottom temperature are more than 0 ℃, stopped the airborne moisture of Ling Gu and the bonding that occurs to freeze, guarantee valve opening and closing reliable in action, with the safe and reliable of system and increase economic efficiency,
2, the utility model is due to loose warm sufficient condition, and the hard thing of having stopped to freeze scratches valve rod and filler, makes it to keep sealability running life cycle long, thereby has extended the working life of deep cooling gate valve, has reduced working condition system maintenance cost;
3, the utility model is due to loose warm sufficient condition, and lengthening valve gap napex and shaft length that needn't be excessive have been avoided the stress of valve rod in strut buckling and caused the leakage of flap and valve base sealing pair.For the endurance of valve seal performance has been created condition.
4, the utility model is due to loose warm sufficient condition, and lengthening valve gap napex length that needn't be excessive, has increased valve gap and valve bulk strength, has reduced the manufacture cost of valve simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
Shown in accompanying drawing 1, a kind of compound loose Winchester disk valve gap deep cooling stop valve, it comprises valve body 1, on the valve seat of valve body middle part, be provided with flap 2, valve gap 15 is set on valve body, valve body and valve gap are by stud 5, nut 6 fastening pieces are fixed, flap upper end connects valve rod 4, fixing by flap cap 3, valve rod is through the upper seal support 8 that is located at bonnet lower, and the stuffing box packing 9 in valve gap top seal letter, filler packing ring 23 and filler pressing 12, filler pressing is provided with Gland 21, valve rod upwards extends with the T-shaped nut 16 on valve gap and coordinates, finally be connected with handwheel 18, described T-shaped nut is fixed by lock screw 17, described Gland and valve gap removably connect, described valve gap outside is provided with the loose Winchester disk 25 of monolithic major diameter and the loose Winchester disk 24 of multiple minor diameters.
Between described Gland and valve gap, by bearing pin 10, cotter pin 11, swing bolt 13 and hexagon nut 14 fastening pieces, connect.Described handwheel is fastening by plain washer 19 and hexagon nut 20.Between described valve gap and valve body, be provided with seal ring 7.
The utility model has been obtained following technique effect:
Loose temperature amount Q=temperature conductivity λ × loose poor Δ T of warm area A × ambient temperature.
We from improving warm conductivity λ, to increase the structural type that valve gap and surrounding environment design valve gap to wandering warm area A, with surrounding environment to the thinking of tri-parameters of warm temperature difference Δ T of scattering as follows:
The valve gap outside of this deep cooling stop valve is provided with the loose Winchester disk of monolithic major diameter and napex is provided with the compound loose Winchester disk structural type that the loose Winchester disk of multi-turn minor diameter forms, except the loose temperature of the loose Winchester disk leading portion of monolithic major diameter, valve gap napex has increased again the loose Winchester disk of multi-turn minor diameter, reasonably setting space, be convenient to the thin little loose Winchester disk thickness size of processing, and rational napex wall thickness dimension, thereby improved average temperature conductivity λ, the cold temperature that has simultaneously strengthened napex periphery with surrounding environment to the warm area A of scattering; Because the loose Winchester disk radius of minor diameter is little, the cold temperature passing over close to deep cooling medium basal plane, cold temperature in the best and surrounding environment are to wandering warm temperature difference Δ T, to lower and on adjacent loose Winchester disk between the temperature difference have nonlinear gradient clearly to successively decrease, loose temp effect is splendid, guarantees that valve rod and cooperation place, filler bottom temperature, at 0 ℃, the bonding of freezing does not occur above.Also the length that has shortened valve gap, has reduced cost simultaneously.Effectively solved the shortcoming of former conventional art.
Claims (4)
1. a compound loose Winchester disk valve gap deep cooling stop valve, it is characterized in that: it comprises valve body (1), on the valve seat of valve body middle part, be provided with flap (2), valve gap (15) is set on valve body, valve body and valve gap are by stud (5), nut (6) fastening piece is fixed, flap upper end connects valve rod (4), fixing by flap cap (3), valve rod is through the upper seal support (8) that is located at bonnet lower, and the stuffing box packing (9) in valve gap top seal letter, filler packing ring (23) and filler pressing (12), filler pressing is provided with Gland (21), valve rod upwards extends with the T-shaped nut (16) on valve gap and coordinates, finally be connected with handwheel (18), described T-shaped nut is fixing by lock screw (17), described Gland and valve gap removably connect, described valve gap outside is provided with the loose Winchester disk (25) of monolithic major diameter and the loose Winchester disk (24) of multiple minor diameters.
2. compound loose Winchester disk valve gap deep cooling stop valve according to claim 1, is characterized in that: between described Gland and valve gap, by bearing pin (10), cotter pin (11), swing bolt (13) and hexagon nut (14) fastening piece, connect.
3. compound loose Winchester disk valve gap deep cooling stop valve according to claim 1 and 2, is characterized in that: described handwheel is fastening by plain washer (19) and hexagon nut (20).
4. compound loose Winchester disk valve gap deep cooling stop valve according to claim 1 and 2, is characterized in that: between described valve gap and valve body, be provided with seal ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751393.0U CN203571170U (en) | 2013-11-26 | 2013-11-26 | Cryogenic stop valve provided with valve cover with compound cooling disks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751393.0U CN203571170U (en) | 2013-11-26 | 2013-11-26 | Cryogenic stop valve provided with valve cover with compound cooling disks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203571170U true CN203571170U (en) | 2014-04-30 |
Family
ID=50538901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320751393.0U Expired - Lifetime CN203571170U (en) | 2013-11-26 | 2013-11-26 | Cryogenic stop valve provided with valve cover with compound cooling disks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203571170U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2689492C1 (en) * | 2015-11-10 | 2019-05-28 | Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод | Valve adaptation with press fit for valve with upper connector in cryogenic equipment |
-
2013
- 2013-11-26 CN CN201320751393.0U patent/CN203571170U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2689492C1 (en) * | 2015-11-10 | 2019-05-28 | Л'Эр Ликид, Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод | Valve adaptation with press fit for valve with upper connector in cryogenic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |