CN204805610U - Removable self -tightening high temperature valve seat seal structure of track ball valve - Google Patents
Removable self -tightening high temperature valve seat seal structure of track ball valve Download PDFInfo
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- CN204805610U CN204805610U CN201520285763.5U CN201520285763U CN204805610U CN 204805610 U CN204805610 U CN 204805610U CN 201520285763 U CN201520285763 U CN 201520285763U CN 204805610 U CN204805610 U CN 204805610U
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Abstract
The utility model discloses a removable self -tightening high temperature valve seat seal structure of track ball valve, through adopting movable valve holder structure + bolt + filler clamping ring to compress tightly filler structure, and the automatic space that compresses tightly of reservation, guaranteed under normal atmospheric temperature with high temperature under realize self -energized seal, the function of online change disk seat or filler has been realized, the problem of conventional high temperature track ball valve seating can not according to pressure condition self tightening sealing with can not change the disk seat on line is solved, the life of track ball valve under the alternating temperature has been prolonged greatly.
Description
Technical field
The utility model relates to ball valve valve base sealing structure, particularly relates to orbit ball valve replaceable self-tightening high temperature valve base sealing structure.
Background technique
Orbit ball valve, as a kind of special ball valve, because its lasting seals is effective, open and close torque is little, operates the feature such as light, reliable and is needing to be widely used in frequent operating mode of opening.But for worst hot case, there is following technological deficiency in conventional high temperature orbit ball valve:
1, conventional high temperature orbit ball valve valve seat is generally be connected on valve body by the mode of welding, and therefore when after valve seat damage, valve seat itself can not be changed;
2, the high temperature orbit ball valve of movable valve seat is adopted, sealing between valve seat and valve body adopts packing seal, what often adopt is compression type (killing) sealing configuration, namely the relative position of filler and valve seat is static, filler lacks adjustable surplus, to such an extent as to when valve is switched to the situation of relative low temperature and relatively low pressure from the working state of the high pressure-temperature be in for a long time, due to filler overrelaxation, will the generation of leaking be caused.
Summary of the invention
The purpose of this utility model is, for the deficiency in above-mentioned background technology, provide a kind of orbit ball valve replaceable self-tightening high temperature valve base sealing structure, achieve orbit ball valve valve seat can self-tightening sealing, replaceable and resistant to elevated temperatures sealing effect, solve orbit ball valve valve seat can not continue reliable sealing problem at worst hot case, achieve the function can changing valve seat online simultaneously, extend the working life of valve.
The utility model mainly comprises: 1 spheroid, 2 valve bodies, 3 valve gaps, 4 stop screws, 5 handwheels, 6 valve rods, 7 stuffing box packing, 8 bolts, 9 packing press rings, 10 retaining rings, 11 preliminary working bore, 12 bore, 13 fillers, 14 valve seats etc.
Of the present utility modelly to be characterised in that:
1, after retaining ring upper screwed hole being machined, coordinate with the bore of preliminary working with its cylindrical, and shut in interior welds, then adopt machining process to process the bore of needs; Valve seat is placed in bore, after loading multiple tracks filler, packing press ring is loaded, the miner diameter end of packing press ring contacts with filler, bolt is connected on retaining ring through packing press ring, the degree of tightness position being fastened to certain degree stops screwing, reserved certain adjustable space, realizes the assembling of valve seat construction.
2, adopt bolt and nut+packing press ring to compress filling-material structure, and reserve certain automatic impaction space between packing press ring and retaining ring, guarantee to realize sealing to bore at normal temperatures, under actual worst hot case condition, realize self-energized seal.
3, retaining ring adopts the mode of welding to be connected on valve body, processes bolt hole, process bore after welding together with valve body before welding.
4, adopt movable valve seat structure, valve seat and filler all can take out and put into from bore, and guarantee can change valve seat or filler online; Valve seat adopts refractory metal material, and filler adopts high temperature resistant graphite packing, ensures that valve seat is to the applicability of high temperature.
Effect of the present utility model is:
1, bolt+packing press ring is adopted to compress filling-material structure, and (filler under this state compresses as the compression under normal temperature condition to reserve certain automatic impaction space between packing press ring and retaining ring, guarantee to realize sealing to bore at normal temperatures), ensure that medium power is by packing press ring acting surface product moment auto-compensation crush under actual worst hot case condition, make this place be sealed into self-energized seal, ensure sealing effect and the sealing life at this place.
2, retaining ring adopts the mode of welding to be connected on valve body, ensure that the processibility of retaining ring upper bolt hole.
3, movable valve seat structure is adopted, valve seat and filler all can take out and put into from bore, ensure that after valve seat destroys, valve not can be implemented under the prerequisite that pipeline takes off line maintenance yet or changing valve seat and stuffing box packing, solve the problem that orbit ball valve valve seat can not be changed online and safeguard; Valve seat adopts refractory metal material, and filler adopts high temperature resistant graphite packing, ensure that the applicability of this valve seat to high temperature.
Accompanying drawing explanation
Fig. 1: high temperature orbit ball valve structural drawing
Fig. 2: orbit ball valve replaceable self-tightening high temperature valve seat sealed structure chart
In figure: 1 spheroid, 2 valve bodies, 3 valve gaps, 4 stop screws, 5 handwheels, 6 valve rods, 7 stuffing box packing, 8 bolts, 9 packing press rings, 10 retaining rings, 11 preliminary working bore, 12 bore, 13 fillers, 14 valve seats.
Embodiment
With reference to figure 1 and Fig. 2: the embodiment that the utility model realizes self-tightening sealing is: after retaining ring 10 upper screwed hole is machined, coordinate with the bore 11 of preliminary working with its cylindrical, and shut in interior welds, then adopt machining process to process the bore 12 of needs; Valve seat 14 is placed in bore 12, after loading multiple tracks filler 13, packing press ring 9 is loaded, the miner diameter end of packing press ring 9 contacts with filler 13, bolt 8 is connected on retaining ring 10 through packing press ring 9, the degree of tightness position being fastened to certain degree stops screwing, reserved certain adjustable space, realize the assembling of valve seat construction, now, hold because lifting surface area is different at packing press ring 9 small end with large, self-assembling formation piston effect, this piston effect structure compresses filler 13 by making the active force of medium promote packing press ring 9, forms sealing.
Under running conditions, low pressure work condition environment, relies on the sealing force of the filler 13 compressed to realize the sealing of valve seat 14 and bore 12; After pressure medium raises, the hermetic penetrant power that the pressure initiation of rising is higher, promotions packing press ring 9 is also compressed filler 13 and realizes sealing by the pressure simultaneously raised.After pressure medium reduces, the stressed decline of packing press ring 9, packing press ring 9 will loosen automatically, guarantees unduly to compress filler 13 when low pressure, thus serves the effect of protection filler 13, thus extends the sealing working life of this place's filler.
With reference to figure 1 and Fig. 2: the embodiment that the utility model realizes changing online valve seat is: structure according to the preceding paragraph, valve seat 14 is movable valve seat, when needing to change valve seat 14 or filler 13, under the precondition that valve gap 3 is opened, only need bolt 8 to disassemble, easily can realize the replacing to valve seat 14 or filler 13.
A lot of modification and improvement can also be made according to invention spirit of the present utility model and principle; therefore being only the utility model described in above example sets forth the invention thought of this device, principle and the wherein a kind of of mode of execution; this description should not become one restriction of the present utility model; for a person skilled in the art, all protection domain of the present utility model should be considered as not changing the multiple modification made in basic functional principle and design situation of the present utility model and improve.
Claims (4)
1. an orbit ball valve replaceable self-tightening high temperature valve base sealing structure, is characterized in that: be made up of valve body, valve seat, multiple filler, packing press ring, retaining ring and bolt; After it is characterized in that retaining ring upper screwed hole to machine, coordinate with the bore of preliminary working with its cylindrical, and shut in interior welds, then adopt machining process to process the bore of needs; Valve seat is placed in bore, after loading multiple tracks filler, packing press ring is loaded, the miner diameter end of packing press ring contacts with filler, bolt is connected on retaining ring through packing press ring, the degree of tightness position being fastened to certain degree stops screwing, reserved certain adjustable space, realizes the assembling of valve seat construction.
2. orbit ball valve replaceable self-tightening high temperature valve base sealing structure according to claim 1, it is characterized in that: adopt bolt and nut+packing press ring to compress filling-material structure, and certain automatic impaction space is reserved between packing press ring and retaining ring, guarantee to realize sealing to bore at normal temperatures, under actual worst hot case condition, realize self-energized seal.
3. orbit ball valve replaceable self-tightening high temperature valve base sealing structure according to claim 1, is characterized in that: retaining ring adopts the mode of welding to be connected on valve body, processes bolt hole, process bore after welding together with valve body before welding.
4. orbit ball valve replaceable self-tightening high temperature valve base sealing structure according to claim 1, is characterized in that: adopt movable valve seat structure, valve seat and filler all can take out and put into from bore, and guarantee can change valve seat or filler online; Valve seat adopts refractory metal material, and filler adopts high temperature resistant graphite packing, ensures that valve seat is to the applicability of high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285763.5U CN204805610U (en) | 2015-04-30 | 2015-04-30 | Removable self -tightening high temperature valve seat seal structure of track ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285763.5U CN204805610U (en) | 2015-04-30 | 2015-04-30 | Removable self -tightening high temperature valve seat seal structure of track ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805610U true CN204805610U (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520285763.5U Active CN204805610U (en) | 2015-04-30 | 2015-04-30 | Removable self -tightening high temperature valve seat seal structure of track ball valve |
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| CN (1) | CN204805610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805715A (en) * | 2019-11-16 | 2020-02-18 | 永嘉企达知识产权咨询有限公司 | Change disk seat ball valve on line |
-
2015
- 2015-04-30 CN CN201520285763.5U patent/CN204805610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805715A (en) * | 2019-11-16 | 2020-02-18 | 永嘉企达知识产权咨询有限公司 | Change disk seat ball valve on line |
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