CN203571093U - High-pressure ball valve - Google Patents
High-pressure ball valve Download PDFInfo
- Publication number
- CN203571093U CN203571093U CN201320746570.6U CN201320746570U CN203571093U CN 203571093 U CN203571093 U CN 203571093U CN 201320746570 U CN201320746570 U CN 201320746570U CN 203571093 U CN203571093 U CN 203571093U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure ball
- ball core
- pressure
- valve seat
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Abstract
The utility model discloses a high-pressure ball valve which comprises a valve body, a ball core and a valve seat and further comprises two connecting bodies arranged on two sides of the valve body and detachably connected with the valve body. The connecting bodies are communicated with the valve seat and the ball core to form fluid channels, and O-shaped sealing rings are added between the valve body and the connecting bodies. The O-shaped sealing rings can be also sealed by means of the elastic force effect. After a medium with pressure is filled into a cavity, the O-shaped sealing rings displace under the medium pressure effect and moves toward the low-pressure side, meanwhile elastic deformation is further increased, a gap is filled and closed, good sealing performance between the valve body and the connecting bodies is achieved, and accordingly the service life of the valve is effectively prolonged.
Description
Technical field
The utility model relates to a kind of high-pressure ball valve.
Background technique
Development along with China's oil, gas industry, demand to valve significantly increases, particularly the pipeline valve of oil, natural gas extraction and transporting system has been proposed to very high requirement, its require to leak low, long service life and possesses the functions such as high temperature resistant, high pressure.Traditional high-pressure ball valve is because the defect of himself structure and sealing material causes its working life, stability to be all not so good as people's will, once leaking outside appears in valve or the medium of interior leakage in certainly will pipeline by the gap inflow downstream pipeline by between valve body and ball core, valve seat or install place, so that loss of seal function, when if the liquid in pipe is chemical agent or combustible material, the liquid leaking will certainly cause larger disaster; Therefore how to improve working life and the stability of high-pressure ball valve, the object of researching and developing for dealer.
Its structure of traditional high-pressure ball valve is that ball core is fixed by valve rod and lower shaft, valve seat is column type spring and the medium acting in conjunction of face on the lower, to guarantee that ball core and valve seat are combined closely, prevent valves leakage, and pad between valve body often adopts double seal pad acting in conjunction that metal adds tetrafluoro to prevent valve leakage out of steam system.In addition because so high-pressure ball valve is usually hot surfacing cemented carbide on stainless steel base for the traditional ball core of the operating mode of high pressure difference band granule medium, valve seat technique, to reach the effect that improves its surface hardness.Said structure can meet the special operation condition of high-pressure ball valve in theory, but its structure, technique and gasket seal all can not meet its long-term requirement of using under the operating mode of high temperature, High Pressure Difference, in actual utilization, easily find the shortcomings such as poor stability, driving moment greatly, easily leaks outside and the hardstanding of valve seat ball core easily peels off, damage, certainly will affect its Safety performance and working life like this.
Therefore, need to improve existing high-pressure ball valve, improve its working stability and sealing, reduce the probability that leaks, improve Safety performance, increase the service life.
Model utility content
In view of this, the utility model provides a kind of high-pressure ball valve, can realize the unappeasable requirement of other high-pressure ball valve that uses general pad to seal, in the equipment and device of high temperature, high pressure and ultravacuum, only need lower pretightening force, between valve body and connecting body, also can there is sealing effectively, improve working stability and the sealability of ball valve integral body, increase the service life.
High-pressure ball valve of the present utility model, comprise valve body, ball core and valve seat, also comprise be arranged at valve body both sides and with detachable two connecting bodys that are connected of valve body, described connecting body is communicated with formation fluid passage with described valve seat and ball core, between described valve body and two described connecting bodys, all add O RunddichtringO.
Further, described high-pressure ball valve also comprises the dunnage that is connected with connecting body and ball core is formed to support limit, dunnage is two that the upper and lower two ends of corresponding ball core arrange, the upper and lower two ends of described ball core are the outstanding guide holder that forms outwards, and ball core guide holder embeds described dunnage in the mode that can rotate around self axis.
Further, in two described dunnages, be equipped with the through hole embedding for guide holder, between described guide holder and described dunnage, by being positioned at the bearing of through hole, be connected.
Further, two described dunnages add one between corresponding and upper and lower two ends of ball core respectively and are coated at guide holder the Sealing for sealing.
Further, in two described dunnages, be respectively equipped with the annular stop boss for preventing that corresponding seal radial from moving.
Further, between described valve seat and described connecting body, be also provided with a Z-shaped deck, between described connecting body and described Z-shaped deck, the elastic component that promising valve seat provides pretightening force be set, between described Z-shaped deck and described valve seat, be provided with the seal ring for sealing.
Further, described elastic component is wavy spring, and described seal ring is graphite-seal ring.
Further, described ball core and described valve seat are made by tungsten carbide material is integral sintered respectively.
Further, described O RunddichtringO is that metallic material is made.
The beneficial effects of the utility model: high-pressure ball valve of the present utility model, between valve body and connecting body, be provided with O RunddichtringO, O-ring seals leans on the resilient force of self and also can realize sealing, is filled with after the medium of pressure, in cavity volume under the effect of pressure medium, O-ring seals is subjected to displacement, shift to low voltage side, its resiliently deformable further strengthens simultaneously, fills and closing gap, reach between valve body and connecting body sealability preferably, thereby effectively improve valve working life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the utility model structural representation;
Fig. 2 is Figure 1A place enlarged diagram.
Embodiment
Fig. 1 is the utility model structural representation, Fig. 2 is Figure 1A place enlarged diagram, as shown in the figure: the high-pressure ball valve of the present embodiment, comprise valve body 1, ball core 2 and valve seat 3, also comprise be arranged at valve body both sides and with detachable two connecting bodys that are connected of valve body (in figure for connecting body 4 and connecting body 5), described connecting body is communicated with formation fluid passage with described valve seat and ball core, all add O RunddichtringO (being O RunddichtringO 6 and O RunddichtringO 6a in figure) between described valve body and two described connecting bodys; It is compacter that O RunddichtringO is particularly suitable for structure, in the higher high-pressure ball valve of seal request, very little even without pressure medium or pressure, O-ring seals by self resilient force and also can realize sealing, in cavity volume, be filled with after the medium of pressure, under the effect of pressure medium, O-ring seals is subjected to displacement, and shifts to low voltage side, its resiliently deformable further strengthens simultaneously, fill and closing gap, from reaching good sealability, thereby effectively improve valve working life.
In the present embodiment, described high-pressure ball valve also comprises the dunnage (being dunnage 7 and dunnage 8 in figure) that is connected with connecting body (being connecting body 4 and connecting body 5 in figure) and ball core is formed to support limit, dunnage is two that the upper and lower two ends of corresponding ball core arrange, described ball core is the outside outstanding guide holder (be guide holder 9 and guide holder 10 in figure) that forms in two ends Shang Xia 2, and ball core guide holder (being guide holder 9 and guide holder 10 in figure) be take and can be embedded described dunnage (being dunnage 8 and dunnage 7 in figure) around the mode of self axis rotation; As shown in the figure, the corresponding guide holder 9 of dunnage 8 arranges, the corresponding guide holder 10 of dunnage 7 arranges, when bearing High Pressure Difference medium, valve seat does the used time, valve seat and ball core produce great force, and traditional high-pressure ball valve can will all be passed to valve rod in this part, and supporting plate structure of the present utility model can pass to its most of power dunnage, thereby can reduce valve rod driving torque, reduce valve cost.
In the present embodiment, in two described dunnages (being dunnage 7 and dunnage 8 in figure), be equipped with the through hole for guide holder (figure be guide holder 9 and guide holder 10) embedding, between described guide holder and described dunnage, by being arranged in the bearing (figure is bearing 11 and bearing 12) of through hole, be connected; As shown in the figure, dunnage 8 is connected by bearing 11 with guide holder 9, dunnage 7 is connected by bearing 12 with guide holder 10, dunnage does not directly contact with ball core, but organically dunnage and ball core are combined by bearing, thereby the frictional force that can reduce like this ball core and dunnage 5 reduces whole valve torque.
In the present embodiment, two described dunnages (being dunnage 7 and dunnage 8 in figure) respectively corresponding and ball core add one and are coated at guide holder the Sealing (figure is Sealing 13 and Sealing 14) for sealing between two ends Shang Xia 2; Sealing can be seal ring or the seal ring that existing any materials is made, and for sealing, prevents that pressure from leaking.
In the present embodiment, in two described dunnages, be respectively equipped with the annular stop boss 15 for preventing that corresponding seal radial from moving; Annular stop boss, by Sealing being fixed between boss and guide holder tightly, preventing that seal radial from moving, thereby reaches good sealing effect.
In the present embodiment, between described valve seat 3 and described connecting body (being connecting body 4 and connecting body 5 in figure), be also provided with a Z-shaped deck 16, between described connecting body (being connecting body 4 and connecting body 5 in figure) and described Z-shaped deck 16, the elastic component 17 that promising valve seat 3 provides pretightening force is set, between described Z-shaped deck and described valve seat, is provided with the seal ring 18 for sealing; Described elastic component 17 is wavy spring, and described seal ring 18 is graphite-seal ring; As shown in the figure, elastic component 17 and seal ring 18 are two, wavy spring is installed simple, can be wide for power value scope, can meet the required valve seat pretightening force of high-pressure ball valve valve seat, simultaneously because valve base surface alloy rigidity will be lower than ball wicking surface alloy rigidity, so valve long-term action can cause the prooving of valve seat, effective use of wavy spring can effectively guarantee that valve seat still can carry out bidirectional compensating, two way sealed after wearing and tearing; The mode that wavy spring and graphite-seal ring arrange simultaneously, met the initial pretightening force that wavy spring provides, solved again the situation that causes excessive friction square due to thermal expansion simultaneously, can meet the sealability of valve in low pressure situation simultaneously, a higher sealing shearing force can be provided again, valve seat and ball core are close together all the time, and in the process of opening, closing at ball valve, valve seat plays the effect of " cleaning " to ball wicking surface.
In the present embodiment, described ball core 2 and described valve seat 3 are made by tungsten carbide material is integral sintered respectively; High-pressure ball valve is usually used in the conveying means of the harder media such as coal dust, silica flour, iron powder, because medium self adds high pressure effect more firmly, be easy to ball core, valve seat erosion, cause valves leakage, the utility model adopts international advanced WC(to claim again Tungsten carbite) integral sintered technology, after soon WC fusing, then direct sintering balling-up core, valve seat are processed as finished product by grinding, its surface hardness can reach HRC78 left and right, can effectively prevent that valve is by erosion, increase valve working life.
In the present embodiment, described O RunddichtringO is that metallic material is made.Metal O type circle can be realized the unappeasable requirement of other general pad with its unique structure, in the equipment and device of high temperature, high pressure and ultravacuum, only need lower pretightening force, even if the place of required sealing is narrower or shape is a bit special, the shape that it can change self thereupon, plays sealing effectively.
Certainly, the utility model also comprises the actuator 20 of valve rod 19 and actuate valve stem work, when providing 19 rotation of drive force valve rod by actuator 20, also drive ball core 2 to rotate to reach the function that control valve opens and closes, final controlling element 20 is connected and is convenient to dismounting, maintenance by fixture block 21 with valve body parts, belong to prior art, do not repeat them here.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (9)
1. a high-pressure ball valve, it is characterized in that: comprise valve body, ball core and valve seat, also comprise be arranged at valve body both sides and with detachable two connecting bodys that are connected of valve body, described connecting body is communicated with formation fluid passage with described valve seat and ball core, between described valve body and two described connecting bodys, all add O RunddichtringO.
2. high-pressure ball valve according to claim 1, it is characterized in that: described high-pressure ball valve also comprises the dunnage that is connected with connecting body and ball core is formed to support limit, dunnage is two that the upper and lower two ends of corresponding ball core arrange, the upper and lower two ends of described ball core are the outstanding guide holder that forms outwards, and ball core guide holder embeds described dunnage in the mode that can rotate around self axis.
3. high-pressure ball valve according to claim 2, is characterized in that: in two described dunnages, be equipped with the through hole embedding for guide holder, between described guide holder and described dunnage, by being positioned at the bearing of through hole, be connected.
4. according to the high-pressure ball valve described in the arbitrary claim of claim 2-3, it is characterized in that: two described dunnages add one between corresponding and upper and lower two ends of ball core respectively and are coated at guide holder the Sealing for sealing.
5. high-pressure ball valve according to claim 4, is characterized in that: in two described dunnages, be respectively equipped with the annular stop boss for preventing that corresponding seal radial from moving.
6. according to the high-pressure ball valve described in the arbitrary claim of claim 1-3, it is characterized in that: between described valve seat and described connecting body, be also provided with a Z-shaped deck, between described connecting body and described Z-shaped deck, the elastic component that promising valve seat provides pretightening force is set, between described Z-shaped deck and described valve seat, is provided with the seal ring for sealing.
7. high-pressure ball valve according to claim 6, is characterized in that: described elastic component is wavy spring, and described seal ring is graphite-seal ring.
8. high-pressure ball valve according to claim 6, is characterized in that: described ball core and described valve seat are made by tungsten carbide material is integral sintered respectively.
9. high-pressure ball valve according to claim 8, is characterized in that: described O RunddichtringO is that metallic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746570.6U CN203571093U (en) | 2013-11-22 | 2013-11-22 | High-pressure ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746570.6U CN203571093U (en) | 2013-11-22 | 2013-11-22 | High-pressure ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203571093U true CN203571093U (en) | 2014-04-30 |
Family
ID=50538825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320746570.6U Expired - Lifetime CN203571093U (en) | 2013-11-22 | 2013-11-22 | High-pressure ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203571093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049956A (en) * | 2020-09-03 | 2020-12-08 | 江苏亿阀股份有限公司 | Angle type duplex ball valve for nuclear submarine and use method thereof |
| CN113932033A (en) * | 2021-09-30 | 2022-01-14 | 沈阳泰科流体控制有限公司 | Ball valve |
-
2013
- 2013-11-22 CN CN201320746570.6U patent/CN203571093U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049956A (en) * | 2020-09-03 | 2020-12-08 | 江苏亿阀股份有限公司 | Angle type duplex ball valve for nuclear submarine and use method thereof |
| CN113932033A (en) * | 2021-09-30 | 2022-01-14 | 沈阳泰科流体控制有限公司 | Ball valve |
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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 |