CN202852050U - Low-temperature eccentric hemisphere ball valve - Google Patents
Low-temperature eccentric hemisphere ball valve Download PDFInfo
- Publication number
- CN202852050U CN202852050U CN 201220539294 CN201220539294U CN202852050U CN 202852050 U CN202852050 U CN 202852050U CN 201220539294 CN201220539294 CN 201220539294 CN 201220539294 U CN201220539294 U CN 201220539294U CN 202852050 U CN202852050 U CN 202852050U
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- China
- Prior art keywords
- valve
- spool
- ball valve
- eccentric
- low
- 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
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Abstract
The utility model discloses a low-temperature eccentric hemisphere ball valve which mainly solves the problems that the existing low-temperature ball valves are poor in tightness, complicated in structure and poor in safety performance when used. The centre line of a flow pass and the centre line of an upper valve rod are eccentric and the spherical centre of a valve element and the centre line of the upper valve rod are eccentric. The low-temperature eccentric hemisphere ball valve has the advantages of being simple in structure, convenient to operate, good in sealing performance, and long in service life.
Description
Technical field
The utility model relates to a kind of ball valve, refers in particular to a kind of low temperature eccentric semi-spherical ball valve.
Background technique
Ball valve because of simple in structure, without flow resistance, open-close convenient, become the valve products that the most generally use in each field.Traditional cryogenic ball valve adopts the global type ball valve mostly, the small-bore floating ball of using, and bigbore usefulness is spherical structure fixedly.When ball valve is closed, be the liquid medium gasification that the prevents body cavity sealing danger of blasting of boosting, entrance point leads on the spheroid of inlet pipeline must be drilled with relief hole, adopts the one-way sealing structural design.When temperature reduced, spheroid was in medium, and temperature is lower than valve body temperature, and the amount of volume shrinkage is large than valve body, caused sealability to reduce.
The model utility content
In order to overcome deficiency and the defective in the background technique, the utility model provides a kind of low temperature eccentric semi-spherical ball valve, solves that existing cryogenic ball valve exists in use that sealing is poor, complex structure and the low problem of Security.
The technical solution of the utility model is: a kind of low temperature eccentric semi-spherical ball valve, comprise valve body, spool and upper valve rod, be provided with the runner that runs through in the described valve body, spool is located in the described runner, described spool is hemisphere, it is characterized in that described runner center line, spool sphere centre all exist eccentric with the upper valve rod center line.
Be disposed with the valve seat and the trim ring that fit with valve interior wall in the described runner, an end of described valve seat is provided with the ring-like inclined-plane that matches with the spool outer wall.
Be provided with pad between described valve seat and the trim ring, described pad is flexible graphite material.
The beneficial effects of the utility model: owing to take such scheme, the double eccentric half ball shape design of low temperature eccentric semi-spherical ball valve of the present utility model, effectively prevent the body cavity liquid gasification phenomenon of boosting, had the characteristics of simple in structure, easy to operate, good seal performance and long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the right elevation of spool among Fig. 1.
Fig. 3 is the sectional view of spool A-A face among Fig. 1.
Among the figure, valve body 1, spool 2, valve seat 3, upper valve rod 4, turbine mechanism 5, runner 6, trim ring 7, pad 8, spool sphere centre B, runner center line C, valve rod center line D.
Embodiment
The below is described further embodiment of the present utility model for accompanying drawing:
Shown in Fig. 1-3, this low temperature eccentric semi-spherical ball valve, comprise valve body 1, spool 2, upper valve rod 4, valve seat 3 and pad 8, be provided with the runner 6 that runs through in the described valve body 1, spool 2 is provided with in the runner 6, described spool 2 is for hemisphere designs, and effectively avoided the body cavity liquid gasification phenomenon of boosting, and has better sealing stability and Security.
By shown in Figure 2, the relative upper valve rod center line of described spool sphere centre B D left avertence arranges, and as shown in Figure 3, partially arranges under the relative runner center line of the described upper valve rod center line D C, consists of two eccentric structures, strengthens the sealing of product.
Shown in Fig. 1-3, upper valve rod 4 upper ends connect the turbine mechanism 5 with manual turntable, and upper valve rod 4 lower ends are connected with spool 2, control the open and close of ball valve by manual turntable rotary spool 2.One end of described valve seat 3 is provided with the ring-like inclined-plane that matches with spool 2 outer walls, rotary spool 2 automatic wedging valve seats 3 ring-like inclined-planes, and closed flow 6 does not need to add preloading spring, and is simple in structure, easy to operate.Valve seat 3 adjacent being provided with are carried out spacing trim ring 7 to valve seat 3, and the full-enclosed pad 8 that is provided with flexible graphite material that can be low temperature resistant-196 ℃ between trim ring 7 and the valve seat 3 substitutes traditional rubber sheet gasket and teflon gasket, totally improves the winter hardiness of product.
When needs ended, upper valve rod 4 turned clockwise, and it is tighter that eccentric structure impels spool 2 and valve seat 3 more to press, and reaches " cut-off state "; When the needs conducting, upper valve rod 4 is rotated counterclockwise, and eccentric structure impels spool 2 to separate rapidly with valve seat 3, reaches " on state ".
Embodiment should not be considered as the restriction to model utility, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (3)
1. low temperature eccentric semi-spherical ball valve, comprise valve body, spool and upper valve rod, be provided with the runner that runs through in the described valve body, spool is located in the described runner, described spool is hemisphere, it is characterized in that: described runner center line, spool sphere centre all exist eccentric with the upper valve rod center line.
2. low temperature eccentric semi-spherical ball valve according to claim 1 is characterized in that being disposed with in the described runner valve seat and the trim ring that fits with valve interior wall, and an end of described valve seat is provided with the ring-like inclined-plane that matches with the spool outer wall.
3. low temperature eccentric semi-spherical ball valve according to claim 2 is characterized in that being provided with pad between described valve seat and the trim ring, and described pad is flexible graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539294 CN202852050U (en) | 2012-10-21 | 2012-10-21 | Low-temperature eccentric hemisphere ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539294 CN202852050U (en) | 2012-10-21 | 2012-10-21 | Low-temperature eccentric hemisphere ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852050U true CN202852050U (en) | 2013-04-03 |
Family
ID=47983255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220539294 Expired - Lifetime CN202852050U (en) | 2012-10-21 | 2012-10-21 | Low-temperature eccentric hemisphere ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202852050U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132158A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Modular-design rotating type forced seal control valve |
| CN104132157A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Forced seal valve with modular design and angular travel operation |
| CN107339456A (en) * | 2017-08-23 | 2017-11-10 | 昆山维萨阀门有限公司 | A kind of eccentric hard sealed ball valve |
-
2012
- 2012-10-21 CN CN 201220539294 patent/CN202852050U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132158A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Modular-design rotating type forced seal control valve |
| CN104132157A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Forced seal valve with modular design and angular travel operation |
| CN107339456A (en) * | 2017-08-23 | 2017-11-10 | 昆山维萨阀门有限公司 | A kind of eccentric hard sealed 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |