CN203940023U - A kind of New forced seal ball-valve - Google Patents
A kind of New forced seal ball-valve Download PDFInfo
- Publication number
- CN203940023U CN203940023U CN201420233362.0U CN201420233362U CN203940023U CN 203940023 U CN203940023 U CN 203940023U CN 201420233362 U CN201420233362 U CN 201420233362U CN 203940023 U CN203940023 U CN 203940023U
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- valve
- valve seat
- spool
- seal ball
- valve body
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Abstract
The utility model discloses a kind of New forced seal ball-valve, comprise valve body and be installed on spool and the valve seat in described valve body, the conduction hole being interlinked to the outside in described valve body is provided with, is positioned at described valve seat, near the position of described spool one side, the retention device for fixing described valve seat is installed on the inwall of described valve body.The utility model is by replacing to the spacing fixing structure of valve seat the fixed connection structure that traditional welding, gluing and interference fit etc. can not quick-detachment with retention device, valve seat when changing, needs can be changed online, thereby reduced the cost of overhaul, also saved the repair time simultaneously.
Description
Technical field
The utility model relates to a kind of forced seal ball valve, relates in particular to a kind of New forced seal ball-valve of being convenient to change online valve seat.
Background technique
Current conventional floating ball valve and fixing ball valve, these two kinds of ball valves are in the process opening and closing, and its sealing surface of seat contacts with spool all the time, has caused keying friction torque larger, and sealing surface of seat is easy to wear, and easy generation is leaked, working life is short.Forced seal ball valve has overcome the shortcoming of ordinary ball valve, in opening-closing process, its sealing surface of seat is separated with spool, reduced friction torque, the wearing and tearing of sealing surface have been reduced, effectively raise the reliability of sealing, therefore in natural gas station, in metering section and molecular sieve device, be widely used, and as one of nucleus equipment.
But find in actual use, existing forced seal ball valve comes with some shortcomings or defect: the valve seat of existing forced seal ball valve and valve body adopt being fixedly connected with that welding, gluing and interference fit etc. cannot quick-detachment conventionally, but hard seal valve seat is as easy-abrasion part, in use need to change, and the valve seat of existing forced seal ball valve cannot be realized online replacing, increased the user cost of product; Existing forced seal ball valve lacks online measuring ability, cannot effectively to the sealability of forced seal ball valve, carry out Real-Time Monitoring; Opening moment, medium easily produces inhomogeneous washing away to spool, produces the problems such as leakage.
Summary of the invention
The purpose of this utility model provides a kind of New forced seal ball-valve of being convenient to change online valve seat with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of New forced seal ball-valve, comprise valve body and be installed on spool and the valve seat in described valve body, the conduction hole being interlinked to the outside in described valve body is provided with, on described valve seat, near the surface of described spool, be annular sealing surface, on the inwall of described valve body, be positioned at described valve seat, near the position of described spool one side, the retention device for fixing described valve seat be installed.
Between tradition valve seat and valve interior wall, adopt welding, gluing and interference fit etc. to be difficult to being fixedly connected with of quick-detachment, so the replacing valve seat that cannot (not unload lower valve from pipeline) online.Between valve seat of the present utility model and valve body, adopt the retention device structure spacing to valve seat, when medium (by the medium of this forced seal ball valve, as rock gas, fluid etc., lower same) flows, can effectively prevent that valve seat is rushed out in the other direction; In the situation that not taking valve body apart, the valve gap of valve body top is opened, then with instrument, retention device is taken off, can take out valve seat, realize the online replacing of valve seat.
Preferably, described retention device is baffle ring or local catch.
For the ease of dismounting retention device, described retention device is installed on the inwall of described valve body by screw.
Further, the annular sealing surface of described valve seat is independent sealed of twice, is provided with interior circular groove described in twice between independent sealed.Independent sealed of twice form double sealing structure, and sealing effect is better; Between two seals, be provided with interior circular groove, can be used for monitoring online the sealing effect of valve.
For on-line monitoring sealing state, the surface away from described spool on described valve seat is provided with outer annular groove, and described outer annular groove communicates with the inner of conduction hole on described valve body, between described outer annular groove and described interior circular groove, is provided with through hole.The conduction hole of through hole, circular groove and valve body by valve seat, whether adopt measurer to detect has medium in through hole, or directly observe and have or not medium to overflow from conduction hole, when valve seat and spool are during in sealing state, if sealing surface leaks, medium will flow out in interior circular groove, the medium conduction hole of through hole, outer annular groove, valve body of can flowing through successively under the effect of pressure, now by external monitoring equipment, check, thereby reach the object of on-line monitoring sealing effect.
According to the position of valve body conduction hole, described outer annular groove is located on described valve seat the outer cylinder surface away from described spool.
Preferably, the other position of central through bore that is positioned at described valve seat on one end end face of the close described spool of described valve seat is provided with ring groove shape enlarging.When this forced seal ball valve is opened, medium can produce and wash away spool; By ring groove shape enlarging is set, medium produces and evenly washes away valve core sealed cover, has avoided the sealing life of local scour effect of attrition valve.
The beneficial effects of the utility model are:
The utility model is by replacing to the spacing fixing structure of valve seat the fixed connection structure that traditional welding, gluing and interference fit etc. can not quick-detachment with retention device, valve seat when changing, needs can be changed online, thereby reduced the cost of overhaul, also saved the repair time simultaneously; By independent sealed of twice are set, form double sealing structure, sealing effect is better; By interior circular groove, through hole and outer annular groove are set on valve seat, realized the real time on-line monitoring to sealing effect, can understand at any time on-the-spot service condition, reduce application risk; End face by the close spool at valve seat arranges ring groove shape enlarging, when medium washes away spool, produces and evenly washes away, thereby be conducive to protect valve core sealed cover, extends the working life of this forced seal ball valve.
Accompanying drawing explanation
Fig. 1 is the sectional view of New forced seal ball-valve described in the utility model;
Fig. 2 is that enlarged view cuts open in the office that the valve seat of New forced seal ball-valve described in the utility model is arranged in Fig. 1 A position.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, New forced seal ball-valve described in the utility model comprises valve body 1 and is installed on spool 5 and the valve seat 4 in valve body 1, the conduction hole being interlinked to the outside in valve body 1 is provided with (is a kind of conventional design, not shown), surface near spool 5 on valve seat 4 is annular sealing surface, on the inwall of valve body 1, be positioned at valve seat 4 and by screw, the baffle ring 3 for fixed valve base 4 be installed near the position of spool 5 one sides, baffle ring 3 also can be used local catch.The horizontal straight-through type valve body of valve body in Fig. 1.
As depicted in figs. 1 and 2, the annular sealing surface of valve seat 4 is independent sealed of twice, be primary sealing area 44 and secondary sealing area 45, between primary sealing area 44 and secondary sealing area 45, be provided with interior circular groove 42, outer cylinder surface away from spool 5 on valve seat 4 is provided with outer annular groove 43, outer annular groove 43 communicates with the inner of conduction hole on valve body 1, between outer annular groove 43 and interior circular groove 42, be provided with a plurality of equally distributed through holes 41, the other position of central through bore (figure is unmarked) that is arranged in valve seat 4 on one end end face of the close spool 5 of valve seat 4 is provided with ring groove shape enlarging 46.
In Fig. 1, also show the following conventional structure of this forced seal ball valve:
In the groove of valve body 1 lower end, be provided with and trap 2, the lower end of spool 5 is arranged on traps in 2; Spool 5 is that sphere coordinates with the sealing surface between valve seat 4, and spool pin 6 is installed in the pin-and-hole of spool 5; In the upper end hole of spool 5, be provided with valve rod 13, the upper end of valve rod 13 adopts and is threaded with screw rod 15; Track pin 14 is installed on valve gap 8, and the head of track pin 14 matches with spiral chute with valve rod 13; The Stuffing box of valve gap 8 upper ends is provided with Expanded graphite 16, in the middle of Expanded graphite 16, is provided with spacer ring, and Expanded graphite 16 is provided with bulb gland/hold-down grid 18, adopts stud 20 and corresponding pad, hexagon nut to be fixed, and realizes packing seal; Valve gap 8 is provided with grease injection device 29, when filler loses efficacy, can realize emergency sealing; The upper end of valve gap 8 is provided with successively and drives connecting cylinder 23, drives adpting flange 24, adopts lengthening stud 25 and corresponding pad, hexagon nut and valve gap 8 to be connected and fixed; Drive the upper end of adpting flange 24 that umbrella gear mechanism 28, electric actuator or other actuators can be installed, valve body 1 and valve gap 8 use octagonal ring pad 7 sealings, adopt stud 9 and corresponding pad, hexagon nut to connect; Valve gap 8 is provided with hanger.
The principle of start-stop of this forced seal ball valve is:
When forced seal ball valve is during in closed condition, rotate counterclockwise handwheel, drive screw rod 15 to rise, because matching with spiral chute, guide pins 14 limited valve rod 13 rotation ascending motions, the sphenoid surface of valve rod 13 lower ends matches with spool pin 6, departs from the sealing surface of valve seat 4 with the sealing surface of movable valve plug 5; Be rotated further handwheel, will drive ball core 5 90-degree rotations to arriving valve wide open; Otherwise, clockwise rotate handwheel, valve rod 13 declines, band movable valve plug 5 rotates backward 90 degree, and now the sealing surface of spool 5 is over against the annular sealing surface (comprising primary sealing area 44 and secondary sealing area 45) of valve seat 4, along with valve rod 13 continues to decline, the sphenoid surface of valve rod 13 and spool 6 produce wedge power, promote spool 5 and swing, the sealing surface of spool 5 is close to the sealing surface of valve seat 4, realizes the sealing of valve.
In said process, the conduction hole of interior circular groove 42, through hole 41, outer annular groove 43 and valve body 1 by valve seat 4, whether through hole 41 in have medium, or directly observe and have or not medium to overflow from conduction hole if adopting measurer to detect; At valve seat 4, with spool 5 during in sealing state, if the conduction hole of valve body 1 has medium to overflow, showing has leakage, illustrate that the sealing effect between valve seat 4 and spool 5 is good not, otherwise good sealing effect is described, reaches the object of detection sealing effect.
When needs are changed valve seat 4, open valve gap 8, by instrument, the screw of baffle ring 3 is unloaded, then to extract valve seat 4 and can take out, reverse operating can install new valve seat 4 or the valve seat of fixing 4.According to application needs, baffle ring 3 also can adopt local catch, as long as can effectively block valve seat 4.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; so long as the technological scheme that can realize on the basis of above-described embodiment without creative work all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (7)
1. a New forced seal ball-valve, comprise valve body and be installed on spool and the valve seat in described valve body, the conduction hole being interlinked to the outside in described valve body is provided with, on described valve seat, near the surface of described spool, be annular sealing surface, it is characterized in that: on the inwall of described valve body, be positioned at described valve seat, near the position of described spool one side, the retention device for fixing described valve seat be installed.
2. New forced seal ball-valve according to claim 1, is characterized in that: described retention device is baffle ring or local catch.
3. New forced seal ball-valve according to claim 1 and 2, is characterized in that: described retention device is installed on the inwall of described valve body by screw.
4. New forced seal ball-valve according to claim 1, is characterized in that: the annular sealing surface of described valve seat is independent sealed of twice, is provided with interior circular groove described in twice between independent sealed.
5. New forced seal ball-valve according to claim 4, it is characterized in that: the surface away from described spool on described valve seat is provided with outer annular groove, described outer annular groove communicates with the inner of conduction hole on described valve body, between described outer annular groove and described interior circular groove, is provided with through hole.
6. New forced seal ball-valve according to claim 5, is characterized in that: described outer annular groove is located on described valve seat the outer cylinder surface away from described spool.
7. according to the New forced seal ball-valve described in claim 1,2,4,5 or 6, it is characterized in that: the other position of central through bore that is positioned at described valve seat on one end end face of the close described spool of described valve seat is provided with ring groove shape enlarging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233362.0U CN203940023U (en) | 2014-05-08 | 2014-05-08 | A kind of New forced seal ball-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420233362.0U CN203940023U (en) | 2014-05-08 | 2014-05-08 | A kind of New forced seal ball-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203940023U true CN203940023U (en) | 2014-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420233362.0U Expired - Fee Related CN203940023U (en) | 2014-05-08 | 2014-05-08 | A kind of New forced seal ball-valve |
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| Country | Link |
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| CN (1) | CN203940023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118264A (en) * | 2019-05-14 | 2019-08-13 | 苏州博雷特流体控制有限公司 | A method of the high-performance expansion sluice valve with back seal function and replacement filler |
-
2014
- 2014-05-08 CN CN201420233362.0U patent/CN203940023U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118264A (en) * | 2019-05-14 | 2019-08-13 | 苏州博雷特流体控制有限公司 | A method of the high-performance expansion sluice valve with back seal function and replacement filler |
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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 |
Granted publication date: 20141112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |