CN202756653U - Ultralow temperature jacket type ball valve - Google Patents
Ultralow temperature jacket type ball valve Download PDFInfo
- Publication number
- CN202756653U CN202756653U CN 201220344865 CN201220344865U CN202756653U CN 202756653 U CN202756653 U CN 202756653U CN 201220344865 CN201220344865 CN 201220344865 CN 201220344865 U CN201220344865 U CN 201220344865U CN 202756653 U CN202756653 U CN 202756653U
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- ring
- type ball
- ball valve
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Abstract
The utility model discloses an ultralow temperature jacket type ball valve which comprises a valve body, an upper valve cover, a ball body, a valve rod, a valve seat, a valve seat fixator, a belleville spring, a pre-tightening nut, an anti-rotating seat ring, a draining board and a spring energy storage seal ring. The valve seat is arranged in the groove of the valve seat fixator, the spring energy storage seal ring is installed on one side of the valve seat fixator, a locating pin is installed on the anti-rotating seat ring, the locating pin is matched with a pin hole on the valve seat fixator, a plurality of installation holes are arranged on the periphery of the pre-tightening nut, and the pre-tightening nut is connected with the valve seat fixator in threaded mode. A reversed pressure ring is arranged on the other side of the valve seat fixator, and the diameter of the reversed pressure ring is larger than the diameter of the spring energy storage seal ring. The ultralow temperature jacket type ball valve can meet pressure relief requirement under any working conditions.
Description
Technical field
The utility model relates to a kind of upper-mounting type ball valve, particularly a kind of used at ultra-low temperature upper-mounting type ball valve that is applicable to LNG project and other worst cold case.
Background technique
At present, common cryogenic ball valve all adopts side-mounted structure, and for the valve under the ultralow-temperature operation conditions, mostly take the method that is connected with pipeline welding, in case leaking appears in valve, only has valve is cut off from pipeline, just can overhaul, both increase maintenance cost, and brought no small loss for again client and enterprise.
On the common cryogenic ball valve valve seat fixture backpressure ring is not set, when central cavity pressure raises unusually, can causes the spring energy-storage seal ring to damage, thereby cause valve leak.
In addition, common cryogenic ball valve is indefinite on the pressure release direction, can not determine that namely middle cavity pressure is to release from the upstream or release from the downstream, so strictly speaking, such valve does not all meet working condition requirement.
The model utility content
The technical problems to be solved in the utility model provide a kind ofly be convenient to safeguard, valve seat is from the high a kind of used at ultra-low temperature upper-mounting type ball valve of pressure release, good seal performance and reliability.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of used at ultra-low temperature upper-mounting type ball valve comprises valve body, bonnet, spheroid, valve rod, valve seat, valve seat fixture, belleville spring, pre-load nut, anti-rotation seat ring, draining board and spring energy-storage seal ring; Described valve seat is arranged in the valve seat fixture groove, described spring energy-storage seal ring is contained on valve seat fixture one side, on the described anti-rotation seat ring locating stud is housed, described locating stud cooperates with pin-and-hole on the valve seat fixture, described pre-load nut circumference is provided with a plurality of installing technological holes, and pre-load nut adopts with the valve seat fixture and is threaded; Described valve seat fixture opposite side is provided with the backpressure ring, and the diameter of described backpressure ring is greater than the diameter of described spring energy-storage seal ring.
Preferably, in the described used at ultra-low temperature upper-mounting type ball valve anti-loosing slice is housed, described anti-loosing slice is provided with screw, and described screw can insert in the pre-load nut auxiliary hole.
Preferably, described used at ultra-low temperature upper-mounting type ball valve also comprises packing seal structure, and described packing seal structure is placed in the top of bonnet.
Preferably, described packing seal structure is by filler pressing sleeve, Gland and media assemblage; Described filler pressing sleeve is connected with Gland, and described filler is connected with filler pressing sleeve.
Preferably, the bottom of described filler is provided with the lip seal circle.
By technique scheme, the beneficial effects of the utility model are:
The utility model is provided with the backpressure ring at valve seat fixture opposite side, and the diameter of backpressure ring is greater than the diameter of described spring energy-storage seal ring; By piston effect as can be known, the thrust that acts on the backpressure ring is larger than the thrust that acts on the spring energy-storage seal ring, so when central cavity pressure raise unusually, the pressure release direction was always towards the side that the backpressure ring is housed; Therefore, the utility model can satisfy the pressure release requirement of any operating mode.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model structural representation;
Fig. 2 is backpressure ring enlarged view;
Fig. 3 is the pre-load nut structural drawing;
Fig. 4 is the packing seal structure schematic representation.
Numeral and the represented corresponding part title of letter among the figure:
1, valve body 2, spheroid 3, pre-load nut 4, spring seat 5, valve seat fixture 6, spring energy-storage seal ring 7, bonnet 8, draining board 9, lip seal circle 10, filler 11, hold-down grid 12, filler pressing sleeve 13, valve rod 14, screw 15, anti-loosing slice 16, valve seat 17, backpressure ring 18, locating stud 19, anti-rotation seat ring 20, belleville spring
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
To shown in Figure 4, a kind of used at ultra-low temperature upper-mounting type ball valve of the utility model comprises valve body 1, bonnet 7, spheroid 2, valve rod 13, valve seat 16, valve seat fixture 5, belleville spring 20, pre-load nut 3, anti-rotation seat ring 19, draining board 8 and spring energy-storage seal ring 6 referring to Fig. 1.
The utility model valve seat 16 is arranged in valve seat fixture 5 grooves, spring energy-storage seal ring 6 is placed on the side of valve seat fixture 5, locating stud 18 is housed on the anti-rotation seat ring 19, and locating stud 18 cooperates with pin-and-hole on the valve seat fixture 5, and pre-load nut 3 circumference are provided with a plurality of installing technological holes.
Valve rod is connected with transmitting torque by flat side with spheroid, and the torsional interaction that provides when handle or actuator can make valve rod 13 drive spheroids 2 rotations, thereby change the keying function that circulation area realizes valve on valve rod 13 time.
The utility model pre-load nut 3 adopts with valve seat fixture 5 and is threaded, and pre-load nut 3 circumference are provided with auxiliary hole, during dismounting, can with extracting tool insertion process hole, make pre-load nut 3 rotations, simultaneously, under the drive of pre-load nut 3, valve seat fixture 5 will move to the side away from spheroid; When importing and exporting distance between the valve seat fixture 5 greater than the spheroid width, spheroid can be taken out in valve pocket, remaining parts also can be taken out successively.
The utility model valve seat fixture 5 opposite sides are provided with backpressure ring 17, and the diameter of backpressure ring 17 is greater than spring energy-storage seal ring 6 diameters that are arranged on the side valve seat fixture 5, by piston effect as can be known, the thrust that acts on the backpressure ring 17 is larger than the thrust that acts on the spring energy-storage seal ring 6, so when central cavity pressure raise unusually, the pressure release direction was always towards the side that backpressure ring 17 is housed; Therefore, this applicable novel pressure release requirement of satisfying any operating mode.
Anti-loosing slice 15 is housed in the utility model valve pocket, and anti-loosing slice 15 is provided with screw 14, will can play locking effect in the auxiliary hole on screw 14 insertion pre-load nuts 3 circumference; Can effectively prevent from causing valve seat 16 pretensions than drops owing to pre-load nut 3 relaxes, guarantee the reliable sealing of valve.
The utility model also is provided with a packing seal structure, and packing seal structure is placed in the top of bonnet 7, and packing seal structure is comprised of filler pressing sleeve 12, hold-down grid 11 and filler 10; Filler pressing sleeve 12 is connected with hold-down grid 11, and filler 10 is connected with filler pressing sleeve 12; Externally under the heat transfer process of environment to bonnet 7, the cryogenic media that is penetrated into bonnet 7 inside will absorbing heat, and its temperature will raise, so the filler temperature is remained on more than 0 ℃.
The utility model filler 10 bottoms also are provided with lip seal circle 9 one; this lip seal circle 9 is under the effect of pressure medium; its two lateral lips limit will be to radially expansion; and reach the primary seal of filler 10, and blocked the possibility that medium contacts with filler 10, further protected filler 10 not to be subjected to the impact of cryogenic media; simultaneously; reduce valve torque, improved the valve seal performance, increased valve working life.
The utlity model has good seal performance, long lifetime, and the advantage such as beautiful shape.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a used at ultra-low temperature upper-mounting type ball valve comprises valve body, bonnet, spheroid, valve rod, valve seat, valve seat fixture, belleville spring, pre-load nut, anti-rotation seat ring, draining board and spring energy-storage seal ring; Described valve seat is arranged in the valve seat fixture groove, described spring energy-storage seal ring is contained on valve seat fixture one side, on the described anti-rotation seat ring locating stud is housed, described locating stud cooperates with pin-and-hole on the valve seat fixture, described pre-load nut circumference is provided with a plurality of installing technological holes, and pre-load nut adopts with the valve seat fixture and is threaded; It is characterized in that described valve seat fixture opposite side is provided with the backpressure ring, the diameter of described backpressure ring is greater than the diameter of described spring energy-storage seal ring.
2. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 1, it is characterized in that: in the described used at ultra-low temperature upper-mounting type ball valve anti-loosing slice is housed, described anti-loosing slice is provided with screw, and described screw can insert in the pre-load nut auxiliary hole.
3. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 1, it is characterized in that: described used at ultra-low temperature upper-mounting type ball valve also comprises packing seal structure, and described packing seal structure is placed in the top of bonnet.
4. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 3, it is characterized in that: described packing seal structure is by filler pressing sleeve, Gland and media assemblage; Described filler pressing sleeve is connected with Gland, and described filler is connected with filler pressing sleeve.
5. a kind of used at ultra-low temperature upper-mounting type ball valve according to claim 4, it is characterized in that: the bottom of described filler is provided with the lip seal circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344865 CN202756653U (en) | 2012-07-16 | 2012-07-16 | Ultralow temperature jacket type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344865 CN202756653U (en) | 2012-07-16 | 2012-07-16 | Ultralow temperature jacket type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756653U true CN202756653U (en) | 2013-02-27 |
Family
ID=47735837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220344865 Expired - Fee Related CN202756653U (en) | 2012-07-16 | 2012-07-16 | Ultralow temperature jacket type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756653U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748497A (en) * | 2012-07-16 | 2012-10-24 | 圣博莱阀门有限公司 | Ultra-low temperature top-mounted type ball valve |
| CN104006212A (en) * | 2014-06-05 | 2014-08-27 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device for ball valves |
| CN107202176A (en) * | 2017-08-02 | 2017-09-26 | 上海凯工阀门股份有限公司 | Formula ultralow temperature fixing ball valve is filled in one kind |
| CN110725968A (en) * | 2019-09-24 | 2020-01-24 | 中泰阀门有限公司 | Top-mounted low-temperature ball valve |
-
2012
- 2012-07-16 CN CN 201220344865 patent/CN202756653U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748497A (en) * | 2012-07-16 | 2012-10-24 | 圣博莱阀门有限公司 | Ultra-low temperature top-mounted type ball valve |
| CN102748497B (en) * | 2012-07-16 | 2014-08-06 | 圣博莱阀门有限公司 | Ultra-low temperature top-mounted type ball valve |
| CN104006212A (en) * | 2014-06-05 | 2014-08-27 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device for ball valves |
| CN104006212B (en) * | 2014-06-05 | 2016-03-02 | 张家港富瑞特种装备股份有限公司 | Valve rod sealing device of ball valve |
| CN107202176A (en) * | 2017-08-02 | 2017-09-26 | 上海凯工阀门股份有限公司 | Formula ultralow temperature fixing ball valve is filled in one kind |
| CN110725968A (en) * | 2019-09-24 | 2020-01-24 | 中泰阀门有限公司 | Top-mounted low-temperature ball valve |
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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: 20130227 Termination date: 20180716 |