CN207554856U - A kind of ultra-low temperature ball valve - Google Patents
A kind of ultra-low temperature ball valve Download PDFInfo
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- CN207554856U CN207554856U CN201820016898.5U CN201820016898U CN207554856U CN 207554856 U CN207554856 U CN 207554856U CN 201820016898 U CN201820016898 U CN 201820016898U CN 207554856 U CN207554856 U CN 207554856U
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- low temperature
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Abstract
The utility model is related to a kind of ultra-low temperature ball valve, upstream valve seat and downstream valve seat and the bolted valve deck of the valve body and the valve rod being arranged in the valve deck including valve body, positioned at the sphere of the valve inner, between the sphere and valve body and positioned at the sphere both sides；Valve seat retainer ring is provided between the upstream valve seat and downstream valve seat and the valve body, the valve seat retainer ring is engaged with the upstream valve seat and downstream valve seat to be connect；Sealing ring is both provided between the upstream valve seat and downstream valve seat and the sphere, the sealing ring is fixed on valve seat on for lip and by trim ring；It is big that the utility model solves valve seat retainer ring difficulty of processing, increases cost input；The technical issues of easily deforming during valve seat insert stress is upward simultaneously, and then realize that sealing property of ball valves is good, service life is long, low temperature resistant operating mode, at the same have anti-low temperature locking, it is reliable, can on-line maintenance effect.
Description
Technical field
The utility model is related to ball valve technical field more particularly to a kind of ultra-low temperature ball valves.
Background technology
Liquefied natural gas is a kind of cleaning, the efficient energy, under the increasingly significant background of environmental problem, liquefied natural gas
Increasingly favored as clean energy resource, due to this trend, liquefied natural gas application technology is also rapidly developed, liquid
Change natural gas just with every year about 12% rapid growth, become the whole world and increase one of most swift and violent energy industry, China is in recent years
Also more focus on the introduction to LNG, in the coastal whole process for arranging a large amount of LNG receiving stations, gasification being received from LNG
In, it needs to use a large amount of cryogenic valve.
Since cryogenic valve operating mode is very harsh, to valve mechanism, choice of material, low-temperature treatment, inside and outside
Sealing, valve chamber build the pressure etc., and parameter requests are stringent, and current more than 90% relies on imported product, this causes China's Subzero valve industry
Added value and core competitiveness substantially reduce, and Some Domestic valve producer, which has attempted to imitate imported product, to be manufactured, but from reality
From the point of view of the application of border, effect is very undesirable.
It is widelyd popularize with the fast-developing energy-saving and emission-reduction of LNG industry, LNG is with super ultra-low temperature ball valve production domesticization gesture must
Row.
The patent document of Patent No. CN106523729A discloses dress formula fixing ball valve on a kind of low temperature, is filled on the low temperature
Formula fixing ball valve includes：Valve body, sphere, upstream valve seat, downstream valve seat, valve deck, valve rod, connecting bracket and executing agency；Ball
The upper and lower ends of body are respectively arranged with short axle and lower short axle, and upper short axle and lower short axle are structure as a whole with sphere, valve rod with
Upper short axle connection；The first elastic compensating component and general plug sealing ring are provided between upstream valve seat, downstream valve seat and valve body；On
Trip valve seat is stepped construction and can move in the horizontal direction；Downstream valve seat is stepped construction and can move in the horizontal direction,
Formula fixing ball valve dimensional accuracy height, good seal performance are filled on the low temperature, service life is long, disclosure satisfy that is used at -162 DEG C
It is required that even if bore reaches 6 cun or more, the properties that formula fixing ball valve is filled on the low temperature remain able to meet the requirements.
But in actual use, inventor has found that the valve seat retainer ring difficulty of processing is big, increases cost input；
The problem of being easily deformed during valve seat insert stress is upward simultaneously.
Utility model content
The purpose of this utility model is in view of the deficiencies of the prior art, to use lip self-pressure-sealed by back-pressure sealing
Circle, then coordinate trim ring so that upstream valve seat and downstream valve seat are not easily susceptible to extruding force during movement and deform, it ties simultaneously
Conjunction valve seat retainer ring is engaged with upstream valve seat and downstream valve seat to be connect, big so as to solve valve seat retainer ring difficulty of processing,
Increase cost input；The technical issues of being easily deformed during valve seat insert stress is upward simultaneously, and then realize
Sealing property of ball valves is good, service life is long, low temperature resistant operating mode, at the same have anti-low temperature locking, it is reliable, can on-line maintenance effect
Fruit.
It is as follows using technical solution for more than technical problem：A kind of ultra-low temperature ball valve, including valve body, positioned at the valve
Sphere, the upstream valve seat between the sphere and valve body and positioned at the sphere both sides and the downstream valve seat in internal portion,
Valve deck bolted with the valve body and the valve rod being arranged in the valve deck；
Be provided with valve seat retainer ring between the upstream valve seat and downstream valve seat and the valve body, the valve seat retainer ring with
The upstream valve seat and downstream valve seat are engaged connection；
Sealing ring is both provided between the upstream valve seat and downstream valve seat and the sphere, the sealing ring is close to described
Upstream valve seat and downstream valve seat are fixed on the upstream valve seat and downstream valve seat on for lip and by trim ring.
As a preferred embodiment, the valve seat is fixed, ring surface surrounding is peripherally disposed several buckles；The upstream
Valve seat and downstream valve seat surface are provided with and the matched card slot of buckle.
It is connected with fixed seat as a preferred embodiment, being threadably secured on the upstream valve seat and downstream valve seat and passes through
Stop pin is located on valve body.
As a preferred embodiment, it is provided with nut, the upstream valve seat and downstream valve seat on the outside of the valve seat and downstream valve seat
End set has threaded line, and the threaded line is connected with the nut.
As a preferred embodiment, the valve deck, using channel is offered inside long neck structure and its, the valve rod is slidably set
It puts on the channel and is located by connecting with spool.
As a preferred embodiment, the valve body is welded type or flange form with the valve deck connection mode.
As a preferred embodiment, it is empty that floating is provided between the valve seat retainer ring and the upstream valve seat and downstream valve seat
Between.
As a preferred embodiment, the sealing ring uses elastic sealing structure.
As a preferred embodiment, the upstream valve seat and downstream valve seat are stepped construction and can move in the horizontal direction.
As another preferably, the upper and lower ends of the sphere are respectively arranged with short axle and lower short axle, and described short
Axis and lower short axle are structure as a whole with the sphere, and the valve rod is connect with the upper short axle.
The beneficial effects of the utility model：
(1) the self-pressure-sealed circle of lip is used by back-pressure sealing in the utility model, then trim ring is coordinated to cause upstream valve seat
Extruding force is not easily susceptible to during movement with downstream valve seat and deformed, improve the service life of entire ball valve；Pass through simultaneously
Pressure medium forms self-sealing function, valve seat back-pressure sealing is effectively ensured, and then can realize less than -196 DEG C of low temperature；
(2) it is provided in the utility model by directly in upstream valve seat and downstream valve seat surface matched with the buckle
Card slot, and coordinate the buckle in valve seat retainer ring, traditional difficulty of processing is reduced, reduces production cost, improves production efficiency；
(3) by the way that valve seat insert is set to use elastic sealing structure, upstream valve seat and downstream valve seat in the utility model
Fixation is connected through a screw thread with nut, and passes through stop pin and is located on valve, then coordinates valve seat retainer ring, makes upstream valve seat under
Trip valve seat has the function of universal free floating and pre-tightens certainly, it is ensured that the reliability of sealing；
(4) reduce valve rod by the way that spool is set to carry out guide-localization using valve deck with valve rod connecting pin in the utility model
By the frictional force of medium influence, valve body torque is reduced, valve rod has the function of anti-fly out；
(5) by setting valve body, using fixed ball double floating valve seat structures, valve chamber has from pressure release work(in the utility model
Can, valve body uses upper dress formula structure, and valve deck is set in valve body upper opening, when failsafe valve, without dismantling valve, it can be achieved that
On-line maintenance.
The advantages of processing is simple in conclusion the equipment has, good airproof performance, is particularly suitable for ball valve technical field.
Description of the drawings
It is required in being described below to embodiment for the clearer technical solution for illustrating the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, drawings discussed below is only some embodiments of the utility model,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is the schematic cross-sectional view of ultra-low temperature ball valve.
Fig. 2 is the enlarged diagram at ultra-low temperature ball valve A.
Fig. 3 is the enlarged diagram at ultra-low temperature ball valve B.
Fig. 4 is the assembling schematic diagram of valve rod and spool.
Fig. 5 is the partial top schematic diagram of upstream valve seat and downstream valve seat.
Fig. 6 is the schematic top plan view of valve seat retainer ring.
Status diagram when Fig. 7 is upstream valve seat and downstream valve seat and the assembling of valve seat retainer ring.
Fig. 8 is status diagram when sphere assembles.
Specific embodiment
The technical scheme in the embodiment of the utility model is clearly and completely illustrated below in conjunction with the accompanying drawings.
Embodiment one
As shown in Figure 1 and Figure 2, a kind of ultra-low temperature ball valve, sphere 2 including valve body 1, inside the valve body 1 are located at
Upstream valve seat 3 and downstream valve seat 4 and 1 spiral shell of valve body between the sphere 2 and valve body 1 and positioned at 2 both sides of sphere
Tether the valve deck 5 connect and the valve rod 6 being arranged in the valve deck 5；
Valve seat retainer ring 7 is provided between the upstream valve seat 3 and downstream valve seat 4 and the valve body 1, the valve seat is fixed
Ring 7 is engaged and connect with the upstream valve seat 3 and downstream valve seat 4；
Sealing ring 41, the sealing ring 41 are both provided between the upstream valve seat 3 and downstream valve seat 4 and the sphere 2
For lip and the upstream valve seat 3 and downstream valve seat 4 are fixed on by trim ring 42 close to the upstream valve seat 3 and downstream valve seat 4
On.
In the present embodiment, by the way that upstream valve seat 3 and 4 back-pressure sealing of downstream valve seat is set to use the self-pressure-sealed circle of lip,
Coordinate trim ring 42 again so that upstream valve seat 3 and downstream valve seat 4 are not easily susceptible to extruding force during movement and deform, raising is whole
The service life of a ball valve；Self-sealing function is formed by pressure medium simultaneously, valve seat back-pressure sealing is effectively ensured.
At this it is worth mentioning that at 4 back-pressure sealing sealing ring 41 of upstream valve seat 3 and downstream valve seat and 1 back-pressure sealing of valve body
Room uses special processing process, ensures that finish reaches more than Ra0.2, it is ensured that the leakproofness of lip-type packing.
Further, as shown in Figure 5, Figure 6, the 7 surface surrounding of valve seat retainer ring is peripherally disposed several cards
Button 71；The upstream valve seat 3 and 4 surface of downstream valve seat are provided with and 71 matched card slots 72 of the buckle.
In the present embodiment, it is matched by being directly provided in upstream valve seat 3 and 4 surface of downstream valve seat with the buckle 71
Card slot 72, and coordinate the buckle 71 in valve seat retainer ring 7, reduce traditional difficulty of processing, reduce production cost, improve production
Efficiency.
At this, what deserves to be explained is, installation sphere 2 tightens nut 20 when installation is complete, so promoted upstream valve seat 3 and under
Valve seat 4 is swum, screw is located at 4 side-walls of upstream valve seat 3 and downstream valve seat.
Further, it is connected with fixed seat as shown in figure 3, being threadably secured on the upstream valve seat 3 and downstream valve seat 4
It 31 and is located on valve body 1 by stop pin.
Further, as shown in figure 3, the upstream valve seat 3 and 4 outside of downstream valve seat are provided with nut 20, the upstream valve
Seat 3 and 4 end set of downstream valve seat have threaded line 30, and the threaded line 30 is connected with the nut 20.
In the present embodiment, by the way that valve seat insert 41 is set to be fixed on using elastic sealing structure by trim ring 42
It swims on valve seat 3 and downstream valve seat 4, upstream valve seat 3 and downstream valve seat 4 are connected through a screw thread fixation, and pass through stop pin with nut
It is located on valve body 1, in cooperation valve seat retainer ring 7, upstream valve seat 3 and downstream valve seat 4 is made to there is universal free floating and from advance
Tight function, it is ensured that the reliability of sealing.
Further, as shown in figure 4, valve deck 5 inside long neck structure and its using channel 10 is offered, the valve rod 6 can be slided
It is dynamic to be arranged on the channel 10 and be located by connecting with spool 61.
Long-neck valve cover structure is used by valve deck 5 in the present embodiment, the design of long-neck valve deck ensures according to BS6364 standards
Temperature in 5 top packing area bottom of valve deck is suitble to the section of normal operating always, to ensure the operability of valve body 1.
It is worth mentioning that spool 61 carries out guide-localization with 6 connecting pin of valve rod using valve deck 5, reduce valve rod 6 by medium
The frictional force of influence, reduces by 1 torque of valve body, and valve rod 6 has the function of anti-fly out.
Further, the valve body 1 and 5 connection mode of valve deck are welded type or flange form.
Further, the valve body 1 uses dress formula structure and for the double floating valve seat structure of fixed ball.
Further, it is provided with floating space 40 between the valve seat retainer ring 7 and the upstream valve seat 3 and downstream valve seat 4.
In the present embodiment, by setting valve body, using fixed ball double floating valve seat structures, valve chamber has from decompression function,
Valve body use upper dress formula structure, valve body upper opening set valve deck, when failsafe valve, without dismantle valve, it can be achieved that
Line repairs.
Further, the sealing ring 41 uses elastic sealing structure.
Further, as shown in Figure 1, the upper and lower ends of the sphere 2 are respectively arranged with short axle 21 and lower short axle 22, and
The upper short axle 21 and lower short axle 22 are structure as a whole with the sphere 2, and the valve rod 6 is connect with the upper short axle 21.
In short, the ball valve reaches valve specification for DN25-DN300, nominal pressure PN2.0-PN15.0, sealing grade is
ANSI Class V-VI, service life is not less than 100,000 times, and temperature in use reaches -196 to+100 DEG C in addition.
Embodiment two
As shown in Figure 1, identical wherein with embodiment one or corresponding component uses and one corresponding attached drawing mark of embodiment
Note, for simplicity, hereafter only description and the distinctive points of embodiment one.The difference of the embodiment two and embodiment one exists
In：
Further, as shown in Figure 1, the upstream valve seat 3 and downstream valve seat 4 are stepped construction and can be in the horizontal direction
It is mobile.
In the present embodiment, upstream valve seat 3 and downstream valve seat 4 can be moved towards valve body 1 under the effect of the pressure, so as to make
Gap is formed between upstream valve seat 3 and downstream valve seat 4 and sphere 2, the safety of ball valve is on the one hand ensure that, on the other hand avoids
By sealing ring release pressure cause sealing ring tightness that can reduce the problem of.
In the description of the present invention, it is to be appreciated that the orientation or position of the instructions such as term " front and rear ", " left and right "
Relationship is based on orientation shown in the drawings or position relationship, is for only for ease of description the utility model and simplifies description, without
It is instruction or implies that signified equipment or component there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as the limitation to utility model.
Certainly in the technical program, those skilled in the art is it should be understood that term " one " is interpreted as " at least
One " or " one or more ", i.e., in one embodiment, the quantity of an element can be one, and in other implementation
In example, the quantity of the element can be multiple, and term " one " is it is not intended that limitation to quantity.
The preferable specific embodiment of the above, only the utility model, but the scope of protection of the utility model is not
This is confined to, the variation that any one skilled in the art can readily occur under the technical clarification of the utility model
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with right
Subject to the protection domain of claim.
Claims (10)
1. a kind of ultra-low temperature ball valve, including valve body (1), positioned at the internal sphere (2) of the valve body (1), positioned at the sphere (2)
Upstream valve seat (3) and downstream valve seat (4) and the valve body (1) between valve body (1) and positioned at the sphere (2) both sides
Bolted valve deck (5) and the valve rod (6) being arranged in the valve deck (5)；It is characterized in that,
Valve seat retainer ring (7), the valve seat are provided between the upstream valve seat (3) and downstream valve seat (4) and the valve body (1)
Retainer ring (7) is engaged and connect with the upstream valve seat (3) and downstream valve seat (4)；
Sealing ring (41), the sealing are both provided between the upstream valve seat (3) and downstream valve seat (4) and the sphere (2)
Circle (41) for lip and is fixed on the upstream valve seat close to the upstream valve seat (3) and downstream valve seat (4) by trim ring (42)
(3) and on downstream valve seat (4).
A kind of 2. ultra-low temperature ball valve according to claim 1, which is characterized in that valve seat retainer ring (7) surface surrounding
It is peripherally disposed to have several buckle (71)；The upstream valve seat (3) and downstream valve seat (4) surface are provided with and the card
Detain (71) matched card slot (72).
3. a kind of ultra-low temperature ball valve according to claim 1, which is characterized in that the upstream valve seat (3) and downstream valve seat
(4) it is threadably secured on and is connected with fixed seat (31) and is located on valve body (1) by stop pin.
4. a kind of ultra-low temperature ball valve according to claim 3, which is characterized in that the upstream valve seat (3) and downstream valve seat
(4) outside is provided with nut (20), and the upstream valve seat (3) and downstream valve seat (4) end set have threaded line (30), the spiral shell
Streakline (30) is connected with the nut (20).
5. a kind of ultra-low temperature ball valve according to claim 1, which is characterized in that the valve deck (5) using long neck structure and
Channel (10) is offered inside it, the valve rod (6), which is slidably arranged on the channel (10) and is positioned with spool (61), to be connected
It connects.
6. a kind of ultra-low temperature ball valve according to claim 1, which is characterized in that the valve body (1) connects with the valve deck (5)
Mode is connect as welded type or flange form.
7. a kind of ultra-low temperature ball valve according to claim 1, which is characterized in that the valve seat retainer ring (7) with it is described on
Floating space (40) is provided between trip valve seat (3) and downstream valve seat (4).
8. a kind of ultra-low temperature ball valve according to claim 1, which is characterized in that the sealing ring (41) is using elastic packing
Structure.
9. a kind of ultra-low temperature ball valve according to claim 1, which is characterized in that the upstream valve seat (3) and downstream valve seat
(4) it is stepped construction and can moves in the horizontal direction.
A kind of 10. ultra-low temperature ball valve according to claim 1, which is characterized in that the upper and lower ends difference of the sphere (2)
Short axle (21) and lower short axle (22) are provided with, and the upper short axle (21) and lower short axle (22) are integrated with the sphere (2)
Structure, the valve rod (6) connect with the upper short axle (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820016898.5U CN207554856U (en) | 2018-01-05 | 2018-01-05 | A kind of ultra-low temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820016898.5U CN207554856U (en) | 2018-01-05 | 2018-01-05 | A kind of ultra-low temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554856U true CN207554856U (en) | 2018-06-29 |
Family
ID=62661292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820016898.5U Active CN207554856U (en) | 2018-01-05 | 2018-01-05 | A kind of ultra-low temperature ball valve |
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| Country | Link |
|---|---|
| CN (1) | CN207554856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626428A (en) * | 2018-07-05 | 2018-10-09 | 杭州杭氧工装泵阀有限公司 | A kind of ultralow temperature upper-mounting type ball valve |
| CN109237069A (en) * | 2018-11-07 | 2019-01-18 | 西诺威阀门控制（苏州）有限公司 | A kind of ultralow temperature fixing ball valve |
-
2018
- 2018-01-05 CN CN201820016898.5U patent/CN207554856U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626428A (en) * | 2018-07-05 | 2018-10-09 | 杭州杭氧工装泵阀有限公司 | A kind of ultralow temperature upper-mounting type ball valve |
| CN109237069A (en) * | 2018-11-07 | 2019-01-18 | 西诺威阀门控制（苏州）有限公司 | A kind of ultralow temperature fixing ball valve |
| CN109237069B (en) * | 2018-11-07 | 2024-06-21 | 西诺威阀门控制（苏州）有限公司 | Ultra-low temperature fixed ball valve |
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