CN203656240U - Dual-power one-way compound sealing low temperature ball valve - Google Patents
Dual-power one-way compound sealing low temperature ball valve Download PDFInfo
- Publication number
- CN203656240U CN203656240U CN201320673976.6U CN201320673976U CN203656240U CN 203656240 U CN203656240 U CN 203656240U CN 201320673976 U CN201320673976 U CN 201320673976U CN 203656240 U CN203656240 U CN 203656240U
- Authority
- CN
- China
- Prior art keywords
- valve
- seal
- valve seat
- hard
- valve rod
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 29
- 150000001875 compounds Chemical class 0.000 title claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model relates to a dual-power one-way compound sealing low temperature ball valve. The low temperature ball valve is characterized in that a valve seat and a valve element is sealed by a soft and hard combined elastic structure that consists of a metal hard seal, an inner ring soft seal and belleville springs, and two belleville springs with different specifications produce pretightening force on end faces connected between the inlet direction of the valve seat and the soft seal and between the inlet direction of the valve seat and the hard seal respectively; the output end of the valve seat is in hard link with the metal hard seal to enable the valve seat to be tightly integrated with the valve element under the dual reactions of the belleville spring pretightening force and the fluid media pressure without displacement and assure the sealing of the valve seat and the valve element, meanwhile, the soft seal in the soft and hard combined elastic structure can effectively prevent particle impurities in fluids from entering a hard sealing clearance, reduce the abrasion of the hard sealing valve seat and the valve element, and prolong the service life of a valve.
Description
Technical field
The utility model relates to a kind of valve, especially relates to a kind of double dynamical unidirectional compound seal formula cryogenic ball valve.
Background technique
Its sealing structure unit of low temperature Float ball valve domestic and external import is generally soft seal or sealing firmly at present, soft seal is in use easy to wear, working life is short, although and hard seal arrangement has certain wear resistance and resistance to erosion ability, its sealability is undesirable; It is fixed and can be compensation that seal valve seat divides, generally compensation is to realize by elasticity original paper, less by flowing medium self wiper seal application in sealing at present, soft sealing material adopts teflon mostly, this materials'use is temperature more than-65 ℃, and when temperature is lower, material property just can not meet job requirement.
Application number is that 201310041962.7 Chinese patent discloses spring compensating type low temperature floating ball valve, the downstream valve body, spheroid and the valve rod that comprise upstream valve body, be fixedly linked with upstream valve body, described sphere installation is in the valve pocket that upstream valve body and downstream valve body form, on the valve body of the downstream of valve pocket, be provided with the downstream valve seat with the laminating of spheroid sphere, on the valve body of the upstream of valve pocket, be provided with the upstream valve seat of fitting with spheroid sphere, between upstream valve seat and upstream valve body, be provided with belleville spring.Utilization of the present invention is arranged on the belleville spring between upstream valve seat and upstream valve body, upstream valve seat is fitted with spheroid all the time, even the in the situation that of low temperature or part gross distortion, also can still guarantee the good of sealing property of ball valves, but, the spring that this patent is just utilized hard sealing material to make to obtain by way of compensation, easily produces wearing and tearing and causes maintenance cost higher.
Model utility content
The purpose of this utility model be exactly provide in order to overcome the defect that above-mentioned prior art exists a kind of simple in structure, cost is low, good sealing effect, and the wide double dynamical unidirectional compound seal formula cryogenic ball valve of one of using scope.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of double dynamical unidirectional compound seal formula cryogenic ball valve, adopts one-way flow design, comprising:
The upper valve rod being welded to connect and lower valve rod, described upper valve rod and lower valve rod joint adopt part hollow structure, the shaft hole matching of offering on this hollow structure external cylindrical surface and lower valve rod, described upper valve rod and lower valve rod place are equipped with sealing configuration;
The hard seal valve seat of soft or hard Combined elastic sealing structure being formed by soft seal circle, video disc spring, saucer spring, this hard seal valve seat is arranged in the Symmetrical Valve body structure being made up of left valve barrel and right valve barrel;
Formed the compression positioning component of lower valve rod and valve body by spacing back-up ring, locating stud.
Described upper valve rod is provided with sleeve with the outside that is connected of lower valve rod, and upper valve rod and sleeve adopt bolt, stuffing box packing, elastic washer, the pre-tightening seal of hold-down ring composition adjustable elastic to reduce leaking outside of valve.
Actuator is installed on described sleeve disk is installed, this actuator is installed disk and is provided with equipment mounting hole, and convenient electricity, liquid, the air driving device installed, realizes manually and automatic double dynamical conversion.
Described lower valve rod and right valve barrel place are provided with stuffing box packing, adopt two butterfly resilient pads to keep the contact of lower valve rod and stuffing box packing to improve sealability.
The periphery of the upper and lower end face of described hard seal valve seat is arranged with seal ring, sealing circle when outside sealed valve body and valve seat effect, receiving portion sub valve is closed fluid to the pressure of valve seat, valve seat is combined closely under dish spring pretightening force active force with spool, while reducing valve closing, cause spool travel, guarantee the sealing of hard seal valve seat and spool.
Described soft seal circle stops granule foreign in fluid to enter hard seal clearance, reduces the wearing and tearing of hard seal valve seat and spool.
The outlet end of described hard seal valve seat adopts and is firmly connected with left valve barrel, makes valve seat under dish spring pretightening force and fluid medium pressure double reaction plus, itself and spool be combined closely, and does not produce displacement, guarantees the sealing of hard seal valve seat and spool.
Compared with prior art, the utlity model has following advantage:
1, by adopting composite seal mode can improve the sealability of valve.
2, adopted one-way flow design, when valve closing, the pressure-acting of flowing medium itself, to valve body, does not affect the sealability of valve seat, spool.
3, adopt the method for soft or hard composite seal, reduce the possibility that impurity enters hard seal valve seat, the life-span of having improved sealing mechanism.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A place valve rod and valve base sealing partial enlarged drawing in Fig. 1;
Fig. 3 is B place left valve barrel partial enlarged drawing in Fig. 1;
Fig. 4 is right valve barrel place of C place partial enlarged drawing in Fig. 1.
In figure, 1 is upper valve rod, and 2 is elastic washer, 3 is bolt, and 4 is the first stuffing box packing, and 5 is sleeve, 6 is bolt, and 7 install disk for actuator, and 8 is the first hold-down ring, 9 is bolt, and 10 is the second hold-down ring, and 11 is positioning retainer ring, 12 is left valve barrel, and 13 is seal ring, and 14 is video disc spring, 15 is saucer spring, and 16 is pressure ring, and 17 is locating stud, 18 is hard seal valve seat, and 19 is soft seal circle, and 20 is valve seals, 21 is spool, 22 is saucer spring, and 23 is right valve barrel, and 24 is the second stuffing box packing, 25 is two butterfly resilient pads, and 26 is lower valve rod.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
A kind of double dynamical unidirectional compound seal formula cryogenic ball valve, as Figure 1-4, this ball valve adopts one-way flow design to its structure, comprises the upper valve rod 1 and lower valve rod 26 that are welded to connect, soft or hard Combined elastic structure and compression positioning component.
Soft or hard Combined elastic structure is made up of soft seal circle 19, video disc spring 14, saucer spring 15, saucer spring 22, and for sealing hard seal valve seat 18, this hard seal valve seat 18 is arranged in the Symmetrical Valve body structure being made up of left valve barrel 12 and right valve barrel 23.The periphery of the upper and lower end face of hard seal valve seat 18 is arranged with seal ring 13, sealing circle 13 when outside sealed valve body and valve seat effect, receiving portion sub valve is closed fluid to the pressure of valve seat, valve seat is combined closely under dish spring pretightening force active force with spool, while reducing valve closing, cause spool travel, guarantee the sealing of hard seal valve seat 18 and spool 21.Soft seal circle 19 can stop granule foreign in fluid to enter hard seal clearance, reduces the wearing and tearing of hard seal valve seat 18 and spool 21.The outlet end of hard seal valve seat 18 adopts and is firmly connected with left valve barrel 12, makes valve seat under dish spring pretightening force and fluid medium pressure double reaction plus, make itself and spool 21 combine closely, and does not produce displacement, guarantees the sealing of hard seal valve seat 18 and spool 21.Compressing positioning component is made up of positioning retainer ring 11, locating stud 17.
The utility model when mounted, is first installed to saucer spring 24, pressure ring 16, hard seal valve seat 18, soft seal circle 19 on right valve barrel 23 and packs spool 21 into; Installation positioning retainer ring 11, the second stuffing box packing 24, two butterfly resilient pad 25, lower valve rod 26 insert lower valve rod 26 by locating stud 17 and locate.Video disc spring 14, saucer spring 15, pressure ring 16, hard seal valve seat 18, soft seal circle 19, valve seals 20 are connected with right valve barrel parts bolt after being installed on left valve barrel; Coupling sleeve 5, the first stuffing box packing 4, actuator are installed disk 7, the first hold-down ring 8, elastic washer 2 are installed, coupling sleeve parts are fixed on right valve barrel with bolt, fixing bolt 6, adjusts bolt 3 and reaches requirement to unlatching moment of torsion.
Working principle: flowing medium is flowed into by left valve barrel 12, after spool 21, flowed out by right valve barrel 23, this ball valve is one-way valve, working procedure can be divided into two stages, the one, when valve is during in buttoned-up status, left side video disc spring 14 and saucer spring 15 are respectively to hard seal valve seat 18 and pressure ring 16, soft seal circle 19 has pretightening force, left valve barrel 12 inner fluid pressure mediums can produce thrust to pressure ring 16 simultaneously, now hard seal valve seat 18 mainly plays a supportive role, pressure is passed to right valve barrel 23, reduce hydrodynamic pressure to the stressed impact of sealing surface, improve sealability.The 2nd, when in valve opening, valve two ends hydrodynamic pressure is identical, hard seal valve seat 18, soft seal circle 19 under dish spring resilient force separately with spool 21 press seals.Soft seal circle seals with spool 21 all the time in valve working process, plays auxiliary seal and prevents in fluid that impurity enters between hard seal valve seat 18 and spool 21 and cause the effect of attrition life-span.The sealing of lower valve rod 26 keeps the second hold-down ring 10 to guarantee airtight quality to the pressure of the second stuffing box packing 24 by two butterfly resilient pads 25.Upper stem seal regulates the pressure of the first hold-down ring 8 to the first stuffing box packing 4 by bolt 3 by elastic washer 2, guarantees airtight quality.
Claims (7)
1. a double dynamical unidirectional compound seal formula cryogenic ball valve, is characterized in that, this ball valve adopts one-way flow design, comprising:
The upper valve rod (1) being welded to connect and lower valve rod (26), described upper valve rod (1) adopts part hollow structure with lower valve rod (26) joint, the shaft hole matching of offering on this hollow structure external cylindrical surface and lower valve rod (26), described upper valve rod (1) and lower valve rod (26) locate to be equipped with sealing configuration;
The hard seal valve seat of soft or hard Combined elastic sealing structure (18) being formed by soft seal circle (19), video disc spring (14), saucer spring (15), this hard seal valve seat (18) is arranged in the Symmetrical Valve body structure being made up of left valve barrel (12) and right valve barrel (23);
Formed the compression positioning component of lower valve rod (26) and valve body by spacing back-up ring (11), locating stud (17).
2. the double dynamical unidirectional compound seal formula cryogenic ball valve of one according to claim 1, it is characterized in that, described upper valve rod (1) is provided with sleeve (5) with the outside that is connected of lower valve rod (26), and upper valve rod (1) adopts bolt (3), stuffing box packing (4), elastic washer (2), the pre-tightening seal of hold-down ring (8) composition adjustable elastic to reduce leaking outside of valve with sleeve (5).
3. the double dynamical unidirectional compound seal formula cryogenic ball valve of one according to claim 2, it is characterized in that, actuator is installed on described sleeve (5) disk (7) is installed, this actuator is installed disk (7) and is provided with equipment mounting hole, convenient electricity, liquid, the air driving device installed, realizes manually and automatic double dynamical conversion.
4. the double dynamical unidirectional compound seal formula cryogenic ball valve of one according to claim 1, it is characterized in that, described lower valve rod (26) locates to be provided with stuffing box packing (24) with right valve barrel (23), adopts two butterfly resilient pads (25) to keep lower valve rod (26) and the contact of stuffing box packing (24) to improve sealability.
5. the double dynamical unidirectional compound seal formula cryogenic ball valve of one according to claim 1, it is characterized in that, the periphery of the upper and lower end face of described hard seal valve seat (18) is arranged with seal ring (13), sealing circle (13) when outside sealed valve body and valve seat effect, receiving portion sub valve is closed fluid to the pressure of valve seat, valve seat is combined closely under dish spring pretightening force active force with spool, while reducing valve closing, cause spool travel, guarantee the sealing of hard seal valve seat (18) and spool (21).
6. a kind of double-power bidirectional compound seal formula cryogenic ball valve according to claim 1 or 5, it is characterized in that, described soft seal circle (19) stops granule foreign in fluid to enter hard seal clearance, reduces the wearing and tearing of hard seal valve seat (18) and spool (21).
7. the double dynamical unidirectional compound seal formula cryogenic ball valve of one according to claim 1, it is characterized in that, the outlet end of described hard seal valve seat (18) adopts and is firmly connected with left valve barrel (12), make valve seat under dish spring pretightening force and fluid medium pressure double reaction plus, make itself and spool (21) combine closely, do not produce displacement, guarantee the sealing of hard seal valve seat (18) and spool (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320673976.6U CN203656240U (en) | 2013-10-29 | 2013-10-29 | Dual-power one-way compound sealing low temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320673976.6U CN203656240U (en) | 2013-10-29 | 2013-10-29 | Dual-power one-way compound sealing low temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656240U true CN203656240U (en) | 2014-06-18 |
Family
ID=50922628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320673976.6U Expired - Fee Related CN203656240U (en) | 2013-10-29 | 2013-10-29 | Dual-power one-way compound sealing low temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656240U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027414A (en) * | 2018-07-13 | 2018-12-18 | 温州上沃阀门科技有限公司 | Executive mode conversion support and actuator installing mechanism applied to valve |
| CN109084022A (en) * | 2018-09-21 | 2018-12-25 | 上海沪东造船阀门有限公司 | A kind of ultralow temperature ball valve seals |
| CN109595356A (en) * | 2019-02-19 | 2019-04-09 | 宁夏银星吴忠仪表流体控制有限公司 | Energy storage type low-frictional force seal ball-valve |
| CN114704665A (en) * | 2022-03-31 | 2022-07-05 | 南通油神液压有限公司 | Valve with double sealing pairs |
| CN117823661A (en) * | 2023-12-21 | 2024-04-05 | 苏州镁伽科技有限公司 | A flow controller |
-
2013
- 2013-10-29 CN CN201320673976.6U patent/CN203656240U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027414A (en) * | 2018-07-13 | 2018-12-18 | 温州上沃阀门科技有限公司 | Executive mode conversion support and actuator installing mechanism applied to valve |
| CN109084022A (en) * | 2018-09-21 | 2018-12-25 | 上海沪东造船阀门有限公司 | A kind of ultralow temperature ball valve seals |
| CN109595356A (en) * | 2019-02-19 | 2019-04-09 | 宁夏银星吴忠仪表流体控制有限公司 | Energy storage type low-frictional force seal ball-valve |
| CN114704665A (en) * | 2022-03-31 | 2022-07-05 | 南通油神液压有限公司 | Valve with double sealing pairs |
| CN117823661A (en) * | 2023-12-21 | 2024-04-05 | 苏州镁伽科技有限公司 | A flow controller |
| WO2025130658A1 (en) * | 2023-12-21 | 2025-06-26 | 苏州镁伽科技有限公司 | Flow controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203656240U (en) | Dual-power one-way compound sealing low temperature ball valve | |
| CN104565421A (en) | Double-power two-way composite sealing type low-temperature ball valve | |
| CN119244768A (en) | A high temperature and high pressure resistant chemical pipeline bellows sealed ball valve | |
| CN202732524U (en) | Water hydraulic two-way cartridge valve | |
| CN209743650U (en) | Novel hard seal floating ball valve | |
| CN207080636U (en) | Low Torque Resilient Floating Ball Valve | |
| CN201568596U (en) | Ball valve | |
| CN201866308U (en) | Automatic compensation one-way floating ball valve | |
| CN200946673Y (en) | Double-eccentric bi-directional metal seal butterfly valve | |
| CN203202254U (en) | Double-eccentric and bidirectional metallic seal butterfly valve | |
| CN2926698Y (en) | Fixed membrane metal sealed spherical valve | |
| CN217108295U (en) | Ball valve | |
| CN202176778U (en) | Self-operated pressure regulating valve in soft sealing structure | |
| CN202790658U (en) | Valve seat of fixed ball valve | |
| CN201225413Y (en) | Ball valve | |
| CN201909060U (en) | High-temperature metal sealing oxygen ball valve | |
| CN215293684U (en) | Novel four-eccentric spherical surface conic line sealing bidirectional ball pressing valve | |
| CN200940702Y (en) | Metal hard sealing ball valve | |
| CN213393655U (en) | Novel soft and hard sealing ball valve | |
| CN215634960U (en) | Rotary sealing device of adhesive tape production equipment | |
| CN205207721U (en) | Parallel gate valve | |
| CN212004357U (en) | Hard seal floating ball valve with medium capable of flowing in two directions | |
| CN210484681U (en) | Electric three-way stop valve | |
| CN209743746U (en) | Hard sealing floating ball valve | |
| CN222437129U (en) | Novel bypass valve of sealing mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 |