CN204805604U - Ultra -low temperature metal ball valve that floats sealed firmly - Google Patents
Ultra -low temperature metal ball valve that floats sealed firmly Download PDFInfo
- Publication number
- CN204805604U CN204805604U CN201520536430.5U CN201520536430U CN204805604U CN 204805604 U CN204805604 U CN 204805604U CN 201520536430 U CN201520536430 U CN 201520536430U CN 204805604 U CN204805604 U CN 204805604U
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- Prior art keywords
- valve
- valve body
- spheroid
- ultralow temperature
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- Expired - Fee Related
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- 239000002184 metal Substances 0.000 title claims abstract description 36
- 210000004907 gland Anatomy 0.000 claims abstract description 21
- 238000012856 packing Methods 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000010792 warming Methods 0.000 claims description 4
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model relates to an ultra -low temperature metal ball valve that floats sealed firmly, including valve body, disk seat, spheroid, gland packing and valve rod, the gland packing is fixed on the valve body, the gland packing is passed to the one end of valve rod, is connected with the spheroid, and the other end sets up in the outside of gland packing, form the valve pocket between valve body, the gland packing, the spheroid sets up in the valve pocket, and the disk seat sets up between valve body and spheroid to the connection is on the valve body, the valve body includes first valve body and second valve body, and the disk seat includes first disk seat and second disk seat, through threaded connection spare fixed connection between two valve bodies, sets up first dish spring between the one end of threaded connection spare and valve body, is provided with the dish spring between first disk seat and first valve body, be provided with valve pocket pressure release groove on the first disk seat, be provided with low temperature shrink elastic deformation slot on the second disk seat, be provided with valve pocket pressure release hole on the spheroid. The metal ball valve valve pocket problem of stepping up unusually of floating sealed firmly under the ultra -low temperature state has effectively been solved in valve pocket pressure release hole and the slot combination of valve pocket pressure release.
Description
Technical field
The utility model relates to fluid technique, relates more specifically to a kind of ultralow temperature metal hard seal floating ball valve.
Background technique
Along with the development of petrochemical industry, the particularly storage of the ultralow temperature product such as LNG Liquefied natural gas, liquid oxygen, liquid nitrogen, transport and extensive use, also more and more higher to the requirement of the ultralow temperature metal hard-sealing ball valve applied under ultralow temperature (-46 ~-254 DEG C) operating mode.According to correlation engineering design and the requirement of technological operation safety, domestic each valve suppliers is being studied the structural design of ultralow temperature metal hard seal floating ball valve different parts always, and makes corresponding optimal design and improve the requirement that all cannot meet actual applying working condition.
The ultralow temperature metal hard seal floating ball valve of current use is mostly external imported product, and there is following a few point defect:
1, adopting is all split type downstream seal valve seat, and under ultralow-temperature operation conditions, the contraction deformation amount of the contraction deformation amount of right valve barrel, valve seat and downstream valve seat insert is different, causes this structure valve often to occur dielectric leakage problem in running;
2, between left valve barrel and right valve barrel, seal between left valve barrel and lengthening stuffing box and adopt spiral wound gasket or spring energy-storage seal ring to seal, after using a period of time under ultralow-temperature operation conditions, because the hardening by cooling of sealed material, deterioration phenomenon are serious, cause valve to occur leaking outside, namely we often see the frost because medium leaks outside outside some valve.
3, when ultralow temperature medium is accumulated in valve pocket, be subject to the impact of pipeline or ambient temperature rising, ultralow temperature medium volume in valve pocket will swash acute expansion, there is valve body deformation or serious cause valve body explosive accident in frequent appearance, jeopardizes human life and equipment safety because of valve pocket overpressure.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of when ensureing deformation coefficient is different under ultralow temperature spheroid and the second valve seat generation resiliently deformable, still can realize the ultralow temperature metal hard seal floating ball valve that the effective sealing between spheroid and the second valve seat coordinates.
Another object of the present utility model is to provide the ultralow temperature metal hard seal floating ball valve of the abnormal boosting problem of metal hard seal floating ball valve valve pocket under a kind of effective solution ultra low temperature state.
The utility model provides a kind of ultralow temperature metal hard seal floating ball valve, it is characterized in that, comprise valve body, valve seat, spheroid, Stuffing box and valve rod, described Stuffing box is fixed on described valve body, one end of described valve rod is through described Stuffing box, be connected with described spheroid, the other end is arranged at the outside of described Stuffing box; Form valve pocket between described valve body, Stuffing box, described spheroid is arranged in described valve pocket, and described valve seat is arranged between described valve body and spheroid, and is connected on described valve body; Described valve body comprises the first valve body and the second valve body that are oppositely arranged, described valve seat comprises the first valve seat and the second valve seat, described first valve seat and the second valve seat are oppositely arranged on the both sides of described spheroid, described first valve body is fixedly connected with by the first threaded connector with the second valve body, first disc spring is set between one end and valve body of described first threaded connector, between described first valve seat and the first valve body, is provided with the second disc spring; The periphery of described first valve seat is provided with valve pocket gas pressure relief slot, and described valve pocket is communicated with upstream line by described valve pocket gas pressure relief slot, described second valve seat is provided with low-temperature shrink resiliently deformable groove, described spheroid is provided with valve pocket relief hole.
Preferably, between described first valve body and the junction plane of the second valve body, the first metal o-ring is provided with.
Preferably, described first valve seat is set on described first valve body, is flexibly connected between the two by Spielpassung.
Preferably, described second valve seat is fixed on described second valve body.
Preferably, described second valve seat is welded on described second valve body, or directly both is made overall structure.
Preferably, described valve body is provided with axially through first flow, described spheroid is provided with the second runner matched with described first flow.
Preferably, the side sphere of described spheroid is provided with the first valve pocket relief hole, the valve rod chute on described spheroid top is provided with the second valve pocket relief hole, when the valve is open, first flow described in described second flow passage, described first valve pocket relief hole is towards valve pocket, and described valve pocket relief hole is communicated with described valve pocket and upstream and downstream pipeline; When the valve is closed, described first valve pocket relief hole is towards updrift side, and described first valve pocket relief hole is communicated with described valve pocket and upstream line.
Preferably, described Stuffing box comprises filler casing and Gland, is fixedly connected with between the two by the 3rd threaded connector; One end of described filler casing is fixed on described valve body by the second threaded connector, and described gland covers on the other end of described filler casing, and is fixed on described filler casing by the 3rd threaded connector; Filler, successively through described filler casing and Gland, described filler casing, is filled between Gland and valve rod in one end of described valve rod; Described filler have employed the structural type of ultralow temperature Packing seat and the sealing of ultralow temperature V-type filler combination.
Preferably, the 3rd disc spring is set between one end and filler casing of described second threaded connector, between one end and the upper-end surface of Gland of described 3rd threaded connector, is provided with the 4th disc spring.
Preferably, the periphery of described Stuffing box is provided with warming plate; Sliding bearing and thrust bearing is provided with between described valve rod and valve body.
The ultralow temperature metal hard seal floating ball valve that the utility model provides, due to described second valve seat being provided with low-temperature shrink resiliently deformable groove, when ensure that the spheroid and the second valve seat generation resiliently deformable that deformation coefficient is different at low temperatures, the effective sealing that still can realize between spheroid and the second valve seat coordinates; Described valve pocket relief hole coordinates with described valve pocket gas pressure relief slot, plays dual safety guarantee, efficiently solves the abnormal boosting problem of metal hard seal floating ball valve valve pocket under ultra low temperature state.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the utility model embodiment, above-mentioned and other objects of the present utility model, feature and advantage will be more clear, in the accompanying drawings:
Fig. 1 is the overall structure schematic diagram of ultralow temperature metal hard seal floating ball valve in the application;
Fig. 2 is the structural representation of the first valve seat in the application;
Fig. 3 is the structural representation of spheroid in the application.
Embodiment
Hereinafter with reference to accompanying drawing, various embodiment of the present utility model is described in more detail.In various figures, identical element adopts same or similar reference character to represent.For the sake of clarity, the various piece in accompanying drawing is not drawn in proportion.
As shown in Figure 1, ultralow temperature metal hard seal floating ball valve in the utility model comprises valve body 1, valve seat 2, spheroid 3, Stuffing box 4 and valve rod 5, described Stuffing box 4 is fixed on described valve body 1, one end of described valve rod 5 is through described Stuffing box 4, be connected with described spheroid 1, the other end is arranged at the outside of described Stuffing box 4; Form valve pocket 100 between described valve body 1, Stuffing box 4, described spheroid 3 is arranged in described valve pocket 100, and described valve seat 2 is arranged between described valve body 1 and spheroid 3, and is connected on described valve body 1.
In addition, the valve in the present embodiment is metal hard-sealing ball valve, and described valve seat 2 adopts metal to make, and is firmly being tightly connected of metal to metal between described spheroid 3 and valve seat 2.
Described valve body 1 comprises the first valve body 11 and the second valve body 12, and described first valve body 11 and the second valve body 12 are oppositely arranged, and by the first threaded connector, such as stud, bolt or screw etc. are fixedly connected with.Preferably, between described first valve body 11 and the junction plane of the second valve body 12, be provided with the first metal o-ring 71, the junction plane between two valve bodies is sealed.First disc spring 61 is set between one end and valve body 1 of described first threaded connector, the low-temperature deformation of valve in the present embodiment is compensated.Described valve body 1 is provided with axially through first flow 10, passing through for fluid.
As Figure 1-3, described valve seat 2 comprises the first valve seat 21 and the second valve seat 22, and described first valve seat 21 and the second valve seat 22 are oppositely arranged on the both sides of described spheroid 3.Described first valve seat 21 is set on described first valve body 11, is flexibly connected between the two by Spielpassung.The second disc spring 62 is provided with between described first valve seat 21 and the first valve body 11, when there is low-temperature shrink distortion in described valve body 1 and spheroid 2 and valve seat itself, described second disc spring 62 adjusts the matching relationship of described valve seat 2 and described spheroid 3 automatically, especially by the matching relationship of described first valve seat 21 automatically between the described spheroid 3 of adjustment and the second valve seat 22, for the valve in the application provides low-temperature shrink deformation-compensated, make the relation that is sealed and matched between described spheroid 3 and valve seat at one's best all the time.The periphery of described first valve seat 21 is provided with valve pocket gas pressure relief slot 211, and described valve pocket 100 is communicated with upstream line by described valve pocket gas pressure relief slot 211, earth pressure release when raising suddenly for valve pocket internal pressure.Described second valve seat 22 is fixed on described second valve body 12, such as, be welded on described second valve body 12 by described second valve seat 22, or directly make overall structure, makes described second valve seat 22 can bear higher external pressure.Described second valve seat 22 is provided with low-temperature shrink resiliently deformable groove 221, and when ensureing that resiliently deformable occurs for deformation coefficient is different at low temperatures spheroid 3 and the second valve seat 22, the effective sealing that still can realize between spheroid 3 and the second valve seat 22 coordinates.
Described spheroid 3 is provided with the second runner 20 matched with described first flow 10, by the rotation of described spheroid 3, drives described second runner 20 to realize cutting off with the connected sum of described first flow 10.The side sphere of described spheroid 3 is provided with the first valve pocket relief hole 31, the valve rod chute on described spheroid top is provided with the second valve pocket relief hole 32; When the valve is open, described second runner 20 is communicated with described first flow 10, and described first valve pocket relief hole 31 is towards valve pocket 100, and described valve pocket relief hole 31,32 is communicated with described valve pocket 100 and upstream and downstream pipeline; When the valve is closed, described spheroid 3 is valve open state 90-degree rotation relatively, make described first valve pocket relief hole 31 towards updrift side, described first valve pocket relief hole 31 is communicated with described valve pocket 100 and upstream line, now described second disc spring 62 promotes described spheroid 3 by described first valve seat 21, make the sphere of described spheroid 3 and described second valve seat 22 realize tight sealing engagement, so just achieve the cut-out between fluid medium upstream and downstream.
The setting of described valve pocket relief hole 31,32, ensures that no matter ultralow temperature metal hard seal floating ball valve is in unlatching or closed condition, and the exception boosting of valve pocket by valve pocket relief hole releasing pressure automatically in upstream line, can ensure the safety of valve and device.Described valve pocket relief hole 31,32 coordinates with described valve pocket gas pressure relief slot 211, plays dual safety guarantee, efficiently solves the abnormal boosting problem of metal hard seal floating ball valve valve pocket under ultra low temperature state.
Described Stuffing box 4 comprises filler casing 41 and Gland 42, and between the two by the 3rd threaded connector, such as stud, bolt or screw etc. are fixed together.One end of described filler casing 41 is fixed on described valve body 1 by the second threaded connector, and described gland 42 covers on the other end of described filler casing 41, and is threaded connection part and is fixed on described filler casing 41.Filler 8, successively through described filler casing 41 and Gland 42, described filler casing 1, is filled between Gland 2 and valve rod 5 in one end of described valve rod 5, seals described valve rod 5.Described filler 8 have employed ultralow temperature Packing seat and ultralow temperature V-type filler combination sealing structural type, ensure that Cryogenic valve be in ultra-low temperature surroundings for a long time under efficient sealed performance.
Preferably, the second metal o-ring 72 is set between described valve body 1 and filler casing 41, sealing surface is between the two sealed.3rd disc spring 63 is set between one end and filler casing 41 of described second threaded connector, for automatically adjusting to being sealed and matched between described valve body 1 and filler casing 41.Described 3rd threaded connector one end and the upper-end surface of Gland 42 between be provided with the 4th disc spring 64, compensate ultralow temperature V-type filler resiliently deformable in use by pretension compressible filler gland 42, keep the sealing effect of valve rod 5 long time stability.
The first described threaded connector, the second threaded connector and the 3rd threaded connector are the connection fastening piece between parts, such as stud, bolt or screw etc.
The periphery of described Stuffing box 4 is provided with warming plate 411, described warming plate 411, when making the valve of cryogen MEDIA FLOW in the application, decreases flowing medium and extraneous heat exchange, reduce flowing medium and be vaporized the danger of even exploding.
Between described valve rod 5 and valve body 1, be provided with sliding bearing 91 and thrust bearing 92, make the valve in the application when its each parts generation low-temperature deformation, described valve rod 5 is not stuck, and can realize ease rotation.
Should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Last it is noted that obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.
Claims (10)
1. a ultralow temperature metal hard seal floating ball valve, it is characterized in that, comprise valve body (1), valve seat (2), spheroid (3), Stuffing box (4) and valve rod (5), described Stuffing box (4) is fixed on described valve body (1), one end of described valve rod (5) is through described Stuffing box (4), be connected with described spheroid (1), the other end is arranged at the outside of described Stuffing box (4); Valve pocket (100) is formed between described valve body (1), Stuffing box (4), described spheroid (3) is arranged in described valve pocket (100), described valve seat (2) is arranged between described valve body (1) and spheroid (3), and is connected on described valve body (1);
Described valve body (1) comprises the first valve body (11) and the second valve body (12) that are oppositely arranged, described valve seat (2) comprises the first valve seat (21) and the second valve seat (22), described first valve seat (21) and the second valve seat (22) are oppositely arranged on the both sides of described spheroid (3), described first valve body (11) is fixedly connected with by the first threaded connector with the second valve body (12), first disc spring (61) is set between one end of described first threaded connector and valve body (1), the second disc spring (62) is provided with between described first valve seat (21) and the first valve body (11),
The periphery of described first valve seat (21) is provided with valve pocket gas pressure relief slot (211), described valve pocket (100) is communicated with upstream line by described valve pocket gas pressure relief slot (211), described second valve seat (22) is provided with low-temperature shrink resiliently deformable groove (221), and (3) are provided with valve pocket relief hole to described spheroid.
2. ultralow temperature metal hard seal floating ball valve according to claim 1, is characterized in that, between described first valve body (11) and the junction plane of the second valve body (12), be provided with the first metal o-ring (71).
3. ultralow temperature metal hard seal floating ball valve according to claim 1, is characterized in that, described first valve seat (21) is set on described first valve body (11), is flexibly connected between the two by Spielpassung.
4. ultralow temperature metal hard seal floating ball valve according to claim 1, is characterized in that, described second valve seat (22) is fixed on described second valve body (12).
5. ultralow temperature metal hard seal floating ball valve according to claim 4, is characterized in that, described second valve seat (22) is welded on described second valve body (12), or directly both is made overall structure.
6. ultralow temperature metal hard seal floating ball valve according to claim 1, it is characterized in that, described valve body (1) is provided with axially through first flow (10), described spheroid (3) is provided with the second runner (20) matched with described first flow (10).
7. ultralow temperature metal hard seal floating ball valve according to claim 6, it is characterized in that, the side sphere of described spheroid (3) is provided with the first valve pocket relief hole (31), the valve rod chute on described spheroid top is provided with the second valve pocket relief hole (32), when the valve is open, described second runner (20) is communicated with described first flow (10), described first valve pocket relief hole (31) is towards valve pocket (100), and described valve pocket relief hole (31,32) is communicated with described valve pocket (100) and upstream and downstream pipeline; When the valve is closed, described first valve pocket relief hole (31) is towards updrift side, and described first valve pocket relief hole (31) is communicated with described valve pocket (100) and upstream line.
8. ultralow temperature metal hard seal floating ball valve according to claim 1, it is characterized in that, described Stuffing box (4) comprises filler casing (41) and Gland (42), is fixedly connected with between the two by the 3rd threaded connector;
One end of described filler casing (41) is fixed on described valve body (1) by the second threaded connector, described gland (42) covers on the other end of described filler casing (41), and is fixed on described filler casing (41) by the 3rd threaded connector; Filler (8), successively through described filler casing (41) and Gland (42), described filler casing (1), is filled between Gland (2) and valve rod (5) in one end of described valve rod (5); Described filler (8) have employed the structural type of ultralow temperature Packing seat and the sealing of ultralow temperature V-type filler combination.
9. ultralow temperature metal hard seal floating ball valve according to claim 8, it is characterized in that, 3rd disc spring (63) is set between one end of described second threaded connector and filler casing (41), described 3rd threaded connector one end and the upper-end surface of Gland (42) between be provided with the 4th disc spring (64).
10. ultralow temperature metal hard seal floating ball valve according to claim 8, is characterized in that, the periphery of described Stuffing box (4) is provided with warming plate (411);
Sliding bearing (91) and thrust bearing (92) is provided with between described valve rod (5) and valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536430.5U CN204805604U (en) | 2015-07-22 | 2015-07-22 | Ultra -low temperature metal ball valve that floats sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536430.5U CN204805604U (en) | 2015-07-22 | 2015-07-22 | Ultra -low temperature metal ball valve that floats sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805604U true CN204805604U (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520536430.5U Expired - Fee Related CN204805604U (en) | 2015-07-22 | 2015-07-22 | Ultra -low temperature metal ball valve that floats sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805604U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989843A (en) * | 2015-07-22 | 2015-10-21 | 雷蒙德(北京)科技股份有限公司 | Ultralow-temperature metal hard seal floating ball valve |
| CN106594308A (en) * | 2016-08-10 | 2017-04-26 | 北京卫星环境工程研究所 | Anti-freezing liquid nitrogen Dewar valve |
-
2015
- 2015-07-22 CN CN201520536430.5U patent/CN204805604U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989843A (en) * | 2015-07-22 | 2015-10-21 | 雷蒙德(北京)科技股份有限公司 | Ultralow-temperature metal hard seal floating ball valve |
| CN106594308A (en) * | 2016-08-10 | 2017-04-26 | 北京卫星环境工程研究所 | Anti-freezing liquid nitrogen Dewar valve |
| CN106594308B (en) * | 2016-08-10 | 2018-07-20 | 北京卫星环境工程研究所 | Antifreeze Dewar container for liquefied nitrogen valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200623 Address after: 056000 Lintan Industrial Park, Jinnan New District, Handan City, Hebei Province (Lintan Town Fan Village) Patentee after: Hebei Raymond Valve Manufacturing Co.,Ltd. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: RAYMOND (BEIJING) TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |