CN202659949U - Self-tightening sealing ball valve - Google Patents
Self-tightening sealing ball valve Download PDFInfo
- Publication number
- CN202659949U CN202659949U CN 201220169115 CN201220169115U CN202659949U CN 202659949 U CN202659949 U CN 202659949U CN 201220169115 CN201220169115 CN 201220169115 CN 201220169115 U CN201220169115 U CN 201220169115U CN 202659949 U CN202659949 U CN 202659949U
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- valve body
- float
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- ball valve
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Abstract
The utility model discloses a self-tightening sealing ball valve which comprises a valve body, a ball body, a valve seat and a valve rod, wherein the valve body comprises a valve body upper part, a valve body lower part, and a cavity for installing the ball body inside, and the valve rod connected with the ball body in the cavity extends out of the valve body through a through hole in the center of the upper part of the valve body. The ball valve also comprises two floating bodies and two pressing rings, wherein the floating bodies and the pressing rings are respectively arranged on the left side and the right side of the valve body, the pressing rings are sleeved on the floating body and fixedly arranged on the valve body through nuts and studs, the floating bodies are fixedly connected to the valve body through the pressing ring, an intermediate sealing ring is placed in a groove between the floating bodies and the valve body, traction bolts are arranged on the pressing rings, the traction bolts penetrate through the pressing rings from the outer parts of the pressing rings and are inserted into the floating bodies for tensioning the floating bodies, therefore, the intermediate sealing ring between the floating bodies and the valve body is pretightened. According to the self-tightening sealing ball valve provided by the utility model, the larger the outwards traction forces borne by the left floating body and the right floating body, the more reliable the sealing.
Description
Technical field
The utility model relates to the ball valve field, refers to especially a kind of self-energized seal ball valve.
Background technique
Ball valve is developed by cock, and its open-shut device utilizes spheroid to realize the purpose of opening and closing around the axis half-twist of valve rod as a spheroid.Ball valve is mainly used in cutting off, distributes and changes the media flow direction at pipeline, ball valve is simple in structure, good seal performance not only, and stimulate the menstrual flow in certain nominal that the scope inner volume is less, lightweight, material consumption is few, installation dimension is little, and driving moment is little, easy and simple to handle, easily realize that fast opening and closing, ball valve are in recent ten years one of valve kinds with fastest developing speed.Particularly in industrially developed country such as U.S., day, moral, method, meaning, west, English, the use of ball valve is very extensive, use kind and quantity still continuing expansion, and develop to high temperature, high pressure, large mouthful warp, high leak tightness, long lifetime, good adjusting function and a valve multifunctional direction, its reliability and other performance index all reach higher level, and part replaces gate valve, stop valve, throttle valve.Along with the technological progress of ball valve, predictable see in short-term in, particularly on the petroleum natural gas pipeline, on the oil refining cracking device and will have on the nuclear industry widely and use.In addition, the big-and-middle-sized bore in other industry, mesolow power field, one of valve types that ball valve also will become to take as the leading factor.
According to the difference of ball seat use material, ball valve is divided into soft sealing ball valve and hard seal ball valve.The most frequently used material of soft sealing ball valve valve seat is teflon and filled polytetrafluoroethylene, hard seal ball valve seat material common metal or pottery.
According to the difference of serviceability temperature, we usually are higher than 250 ℃ ball valve to serviceability temperature and call high-temperature ball valve.Because to can be used as ball valve soft seal valve seat macromolecular material kind under 250 ℃ of high temperature conditions very limited being higher than, so the valve seat of high-temperature ball valve generally adopts metal or ceramic making, i.e. hard seal form is often adopted in high-temperature ball valve sealing.
There are U.S. MOGAS company, VTI company, VOLK company, SST company, VELAN company, Japanese northern village company etc. in the dominant company that produces in the world at present high-temperature hard sealing ball valve.
The middle seal structures of existing metal hard-sealing ball valve mostly adopts the design of pad or seal ring.Because the structure of ball valve and applying working condition, valve all can be subject to the stretching action of external force in various degree in the installation and using process of pipeline.Thereby caused the middle road of valve the faults such as leakage to occur easily.The benefit of enterprise and personnel's safety are caused immeasurable impact.
The model utility content
The technical problems to be solved in the utility model is, for the deficiency that prior art exists, provides a kind of ball valve that can sealing also increases along with the increase of ball valve inner chamber medium pressure.
The technical solution of the utility model is achieved in that this self-energized seal ball valve, comprise valve body, spheroid, valve seat and valve rod, wherein said valve body comprises valve body top, valve body lower portion and confession sphere installation chamber within it, the valve rod that is connected with the chamber interior spheroid stretches out outside the valve body by valve body central upper portion through hole, described ball valve also comprises float and trim ring, described float and trim ring respectively have two, be separately positioned on the valve body left and right sides, trim ring is sleeved on the float, and be fixedly mounted on the valve body by nut and double-screw bolt, described float is fixedly connected on the valve body by trim ring, middle road seal ring is set in the groove between float and the valve body, be provided with draw bolt on the trim ring, described draw bolt passes trim ring from the trim ring outside and is inserted into strains float the float, thereby with the middle road seal ring pretension between float and the valve body.
In another preference, the section of described middle road seal ring is wedge shape.
In another preference, described draw bolt respectively has two on valve body left side trim ring and right side trim ring, be separately positioned on the up and down both sides of float.
In another preference, be provided with pendant collet in the tripartite connecting part of valve body, float and trim ring.
In another preference, described valve seat is installed on float and the contacted inwall of spheroid, be provided with seal ring in the groove between valve seat and the float, in float and the contacted position of valve seat spring is set, described spring one end connects float, the other end linking springs pad, the spring pad the other end connects described seal ring, described seal ring by spring pad and spring with its pretension.
In another preference, be provided with sliding bearing and thrust bearing in the space between described valve body top through hole and the valve rod.
In another preference, described valve body top is by screw fixed connection and sealing cover, stuffing box gland top mounting bracket, be provided with filler in the space between described stuffing box gland and the valve rod, packing press ring is arranged at filler top, packing press ring top arranges hold-down grid, and described hold-down grid is fixed on the support by nut and double-screw bolt.
In another preference, the position that is positioned at valve body at described valve rod is provided with atmospheric valve.
In another preference, described ball valve also comprises bottom, bottom is positioned at the bottom of valve body, comprise bottom base plate and bottom axle, the bottom base plate is installed on the valve body lower portion, the through hole that the bottom axle passes valve body lower portion enters into valve chamber, is connected with spheroid by the mode in the groove that is installed on the spheroid bottom, and the gap between bottom axle and the spheroid bottom groove from bottom to top is disposed with thrust bearing and sliding bearing.
In another preference, be provided with blowdown valve at described bottom axle.
The self-energized seal ball valve that the utility model provides with middle road seal ring pretension, produces initial sealing power by draw bolt tension left and right sides float, seals reliably in the time of guaranteeing normal conditions.When ball valve inner chamber medium pressure rise, left and right sides float is subjected to pressure medium to produce to the left and right certain movement, draw bolt begins unloading, seal pressure between the road seal ring gradually increase with the increase of pressure in road seal ring and valve body and the wedge shape in left and right sides float and the wedge shape, thus reach sealing purpose.And the outside tractive force that left and right sides float is subject to is larger, and its sealing is more reliable.
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 structural representation of self-energized seal ball valve of the present utility model;
Fig. 2 is the enlarged diagram of I part among Fig. 1;
Fig. 3 is the enlarged diagram of II part among Fig. 1;
Fig. 4 is the structural representation of valve body in the self-energized seal ball valve of the present utility model;
Fig. 5 is the structural representation of float in the self-energized seal ball valve of the present utility model;
Fig. 6 is the structural representation of trim ring in the self-energized seal ball valve of the present utility model;
Fig. 7 is the structural representation of stuffing box gland in the self-energized seal ball valve of the present utility model;
Fig. 8 is the structural representation of self-energized seal ball valve medium-height trestle of the present utility model;
Fig. 9 is the structural representation of bottom in the self-energized seal ball valve of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 has illustrated the structure of this self-energized seal ball valve, comprise valve body 1, spheroid 2, valve seat 3 and valve rod 4, valve body 1 comprises valve body top 101, valve body lower portion 103 and the chamber 102 of installing within it for spheroid 2, and the valve rod 4 that is connected with chamber interior spheroid 2 stretches out outside the valve body by valve body central upper portion through hole 104.Described ball valve also comprises float 5 and trim ring 6 (referring to Fig. 2), float and trim ring respectively have two, be separately positioned on the left and right sides of valve body 1, trim ring 6 is sleeved on the float 5, and be fixedly mounted on the valve body 1 by nut and double-screw bolt, float 5 is fixed on the valve body 1 by trim ring 6, and middle road seal ring 7 is set in the groove between float 5 and the valve body, and section of road seal ring is wedge shape in this.Be provided with draw bolt 8 on the trim ring 6, described draw bolt 8 passes trim ring and is inserted into the float 5 from trim ring 6 outsides strains float, thereby with middle road seal ring 7 pretensions between float 5 and the valve body, produce initial sealing power, seal reliably in the time of guaranteeing normal conditions.When ball valve inner chamber medium pressure rise, float 5 is subjected to pressure medium to produce to the left and right certain movement, draw bolt begins unloading, seal pressure between the road seal ring 7 gradually increase with the increase of pressure in road seal ring 7 and valve body 1 and the wedge shape in float 5 and the wedge shape, thus reach sealing purpose.And the outside tractive force that float 5 is subject to is larger, and its sealing is more reliable.
Described draw bolt respectively has two on valve body left side trim ring and right side trim ring, be separately positioned on the up and down both sides of float.
Be provided with pendant collet 9 in the tripartite connecting part of valve body, float and trim ring, increase sealing.
As shown in Figure 3, described valve seat 3 is installed on float 5 and the spheroid 2 contacted inwalls, be provided with valve seat insert 10 in the groove between valve seat 3 and the float 5, in float 5 and valve seat 3 contacted positions spring 11 is set, described spring one end connects float 5, the other end linking springs pad 12, the spring pad the other end connect described valve seat insert 10, valve seat insert by spring pad 12 and spring 11 with its pretension.
Be provided with sliding bearing 13 and thrust bearing 14 in the space between described valve body top through hole 104 and the valve rod 4.Described valve body top 101 is by screw fixed connection and sealing cover 15, stuffing box gland 15 top mounting brackets 16, be provided with filler 17 in the space between described stuffing box gland 15 and the valve rod 4, packing press ring 18 is arranged at filler top, packing press ring top arranges hold-down grid 19, and described hold-down grid is fixed on the support 16 by nut and double-screw bolt.The position that is positioned at valve body at described valve rod 4 is provided with atmospheric valve 20.
Described ball valve also comprises bottom 21 (referring to Fig. 9), bottom is positioned at the bottom of valve body, comprise bottom base plate 211 and bottom axle 212, bottom base plate 211 is installed on the valve body lower portion 103, connect, the through hole 105 that bottom axle 212 passes valve body lower portion enters into valve chamber 102, is connected with spheroid by the mode in the groove that is installed on spheroid 2 bottoms, and the gap between bottom axle 212 and spheroid 2 bottom grooves from bottom to top is disposed with thrust bearing 22 and sliding bearing 23.Be provided with blowdown valve 24 at described bottom axle 212.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. self-energized seal ball valve, comprise valve body, spheroid, valve seat and valve rod, it is characterized in that, described valve body comprises valve body top, valve body lower portion and confession sphere installation chamber within it, the valve rod that is connected with the chamber interior spheroid stretches out outside the valve body by valve body central upper portion through hole, described ball valve also comprises float and trim ring, described float and trim ring respectively have two, be separately positioned on the valve body left and right sides, trim ring is sleeved on the float, and be fixedly mounted on the valve body by nut and double-screw bolt, described float is fixedly connected on the valve body by trim ring, and middle road seal ring is set in the groove between float and the valve body, is provided with draw bolt on the trim ring, described draw bolt passes trim ring from the trim ring outside and is inserted into strains float the float, thereby with the middle road seal ring pretension between float and the valve body.
2. self-energized seal ball valve as claimed in claim 1 is characterized in that, the section of described middle road seal ring is wedge shape.
3. self-energized seal ball valve as claimed in claim 1 is characterized in that, described draw bolt respectively has two on valve body left side trim ring and right side trim ring, be separately positioned on the up and down both sides of float.
4. self-energized seal ball valve as claimed in claim 1 is characterized in that, is provided with pendant collet in the tripartite connecting part of valve body, float and trim ring.
5. self-energized seal ball valve as claimed in claim 1, it is characterized in that, described valve seat is installed on float and the contacted inwall of spheroid, be provided with seal ring in the groove between valve seat and the float, in float and the contacted position of valve seat spring is set, described spring one end connects float, the other end linking springs pad, the spring pad the other end connects described seal ring, described seal ring by spring pad and spring with its pretension.
6. self-energized seal ball valve as claimed in claim 1 is characterized in that, is provided with sliding bearing and thrust bearing in the space between described valve body top through hole and the valve rod.
7. self-energized seal ball valve as claimed in claim 6, it is characterized in that, described valve body top is by screw fixed connection and sealing cover, stuffing box gland top mounting bracket, be provided with filler in the space between described stuffing box gland and the valve rod, packing press ring is arranged at filler top, and packing press ring top arranges hold-down grid, and described hold-down grid is fixed on the support by nut and double-screw bolt.
8. self-energized seal ball valve as claimed in claim 7 is characterized in that, the position that is positioned at valve body at described valve rod is provided with atmospheric valve.
9. self-energized seal ball valve as claimed in claim 1, it is characterized in that, described ball valve also comprises bottom, bottom is positioned at the bottom of valve body, comprise bottom base plate and bottom axle, the bottom base plate is installed on the valve body lower portion, and the through hole that the bottom axle passes valve body lower portion enters into valve chamber, be connected with spheroid by the mode in the groove that is installed on the spheroid bottom, the gap between bottom axle and the spheroid bottom groove from bottom to top is disposed with thrust bearing and sliding bearing.
10. self-energized seal ball valve as claimed in claim 9 is characterized in that, is provided with blowdown valve at described bottom axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220169115 CN202659949U (en) | 2012-04-20 | 2012-04-20 | Self-tightening sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220169115 CN202659949U (en) | 2012-04-20 | 2012-04-20 | Self-tightening sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659949U true CN202659949U (en) | 2013-01-09 |
Family
ID=47454858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220169115 Expired - Lifetime CN202659949U (en) | 2012-04-20 | 2012-04-20 | Self-tightening sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678958A (en) * | 2012-04-20 | 2012-09-19 | 浙江欧维克阀门有限公司 | Self-tightening seal ball valve |
| CN105805346A (en) * | 2016-04-29 | 2016-07-27 | 凯瑞特阀业有限公司 | Ball valve |
-
2012
- 2012-04-20 CN CN 201220169115 patent/CN202659949U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678958A (en) * | 2012-04-20 | 2012-09-19 | 浙江欧维克阀门有限公司 | Self-tightening seal ball valve |
| CN105805346A (en) * | 2016-04-29 | 2016-07-27 | 凯瑞特阀业有限公司 | Ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Yongjia oubeizhen Wenzhou County of Zhejiang province 325102 city and village Patentee after: OVIKO GROUP CO., LTD. Address before: Yongjia oubeizhen Wenzhou County of Zhejiang province 325105 city and village Patentee before: Zhejiang OVIKO Valve Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
|
| CX01 | Expiry of patent term |