CN204083484U - For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve - Google Patents
For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve Download PDFInfo
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- CN204083484U CN204083484U CN201420585413.6U CN201420585413U CN204083484U CN 204083484 U CN204083484 U CN 204083484U CN 201420585413 U CN201420585413 U CN 201420585413U CN 204083484 U CN204083484 U CN 204083484U
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Abstract
For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve, relate to the field of valve rod leak-proof structure.The utility model solves the sealing means of existing rod seal, and sealing effect is not remarkable, and seal life is short, and the sealing configuration of itself makes the very large problem of the operational torque of valve rod.For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve, comprise valve rod and be set in the valve gap on valve rod; Wherein, closed upper end opening in lower end between valve gap and valve rod; Black box is established between valve gap and valve rod; Black box is all stair-stepping first, second, and third sealing caulking ring by inner side surface and outer side surface successively from bottom to up and forms.The utility model adopts the mode of motive sealing and static seal to make sealing effect more remarkable; The design of ladder surface, effectively reduces the operational torque of valve rod; The design of note filler mud passage, can to the inside of sealing configuration continuous additional fillers mud, while ensureing sealing, greatly improve the working life of sealing configuration.
Description
Technical field
The utility model relates to the field of valve rod leak-proof structure, particularly relates to the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve.
Background technique
At present, in petroleum and petrochemical fields, the pressure of Super high pressure valve is designed into 20000PSI, and under hyperpressure working condition like this, the sealing (rod seal) at the valve rod place of heavy-caliber gate valve requires to reach hermetic seal requirement.And existing sealing means, sealing effect is not remarkable, and seal life is short, and the sealing configuration of itself makes the operational torque of valve rod very large, and this just have impact on the application of Super high pressure valve.
Model utility content
For solving the problems of the technologies described above, the utility model provides the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve.
The utility model solves the technological scheme that its technical problem adopts: for the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve, and it comprises valve rod and is set in the valve gap on valve rod; Wherein, the lower end, space between described valve gap and valve rod is airtight, upper end open; Black box is provided with in space between described valve gap and valve rod; Described black box is made up of the first sealing caulking ring, the second sealing caulking ring and the 3rd sealing caulking ring from bottom to up successively; The outer side surface of the inner side surface of the first described sealing caulking ring outer side surface and inner side surface, the second sealing caulking ring and outer side surface, the 3rd sealing caulking ring is all stepped; The lower surface of the first described sealing caulking ring to be pressed in valve gap inside bottom surface and to be provided with exterior seal ring between the outside ladder surface of the first sealing caulking ring and valve gap inside bottom surface; The second described sealing caulking ring outer side surface to be inserted in the inner side surface of the first sealing caulking ring and ladder surface one_to_one corresponding compacting between the two being fixedly connected with; The 3rd described sealing caulking ring outer side surface to be inserted in the inner side surface of the second sealing caulking ring and ladder surface one_to_one corresponding compacting between the two being fixedly connected with; The ladder surface of the inner side of the inner side surface of the first described sealing caulking ring is corresponding with the lower surface of the second sealing caulking ring and be provided with inner seal ring between; The outermost ladder surface of the second described sealing caulking ring outer side surface is corresponding with the upper surface of the first sealing caulking ring and be provided with exterior seal ring between; The ladder surface of inner side of the inner side surface of the second described sealing caulking ring and the lower surface of the 3rd sealing caulking ring and corresponding and be provided with inner seal ring between; The outermost ladder surface of the 3rd described sealing caulking ring outer side surface is corresponding with the upper surface of the second sealing caulking ring and be provided with exterior seal ring between; The outer surface of described valve gap is provided with an opening and the inner side of the first sealing caulking ring in black box is provided with communicating passage and forms the first note filler mud passage, for injecting filler mud; The outer surface of described valve gap is also provided with another opening and the inner side of the second sealing caulking ring in black box is provided with communicating passage and forms the second note filler mud passage, for injecting filler mud.
Upper end open place in described valve gap and valve rod seals and is provided with seal joint; Described seal joint is pressed on black box closely.
The first described sealing caulking ring, the mode be fixedly connected with between the second sealing caulking ring and the 3rd sealing caulking ring can connect for screw.
The orientation type of the first described sealing caulking ring, ladder surface one_to_one corresponding compacting between the second sealing caulking ring and the 3rd sealing caulking ring is rigidity end contact.
Described exterior seal ring and inner seal ring can be the seal ring of different hardness.
Working principle: be divided into two sections from high to low according to pressure and seal respectively, injects filler mud by the first note filler mud passage 5 and the second note filler mud passage 6, realizes the motive sealing of valve rod 2 with black box 3 and the static seal of valve gap 1 and valve rod 2; The ladder surface of each structure of black box 3 and the design of pressing mode thereof, each structure of black box 3 is made only to be subject to ladder pressure, instead of superposition pressure, thus the frictional force that each structure decreasing black box 3 produces valve rod 2, and then reduce the operational torque of valve rod.
The beneficial effects of the utility model: the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve of the present utility model, adopt the mode of motive sealing and static seal to make sealing effect more remarkable; Adopt the design of ladder surface, effectively reduce the operational torque of valve rod; Adopt the design of note filler mud passage, can to the inside of sealing configuration continuous additional fillers mud, while ensure that sealing, substantially increase the working life of sealing configuration.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve of embodiment;
Fig. 2 is the decomposing schematic representation of the black box of the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve of embodiment;
Wherein, 1-valve gap, 2-valve rod, 3-black box, 4-seal joint, 5-first note filler mud passage, 6-second note filler mud passage, 31-first sealing caulking ring, 32-second sealing caulking ring, 33-the 3rd sealing caulking ring, 34-exterior seal ring, 35-inner seal ring.
Embodiment
In order to deepen, to understanding of the present utility model, to be described in further detail the utility model below in conjunction with drawings and Examples, this embodiment, only for explaining the utility model, not forming protection domain of the present utility model and limiting.
Embodiment
As depicted in figs. 1 and 2, for the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve, the valve gap 1 that it comprises valve rod 2 and is set on valve rod 2; Wherein, the lower end, space between described valve gap 1 and valve rod 2 is airtight, upper end open; Black box 3 is provided with in space between described valve gap 1 and valve rod 2; Described black box 3 is made up of the first sealing caulking ring 31, second sealing caulking ring 32 and the 3rd sealing caulking ring 33 from bottom to up successively; The outer side surface of the inner side surface of the first described sealing caulking ring 31 outer side surface and inner side surface, the second sealing caulking ring 32 and outer side surface, the 3rd sealing caulking ring 33 is all stepped; The lower surface of the first described sealing caulking ring 31 is pressed between in valve gap 1 inside bottom surface and the outside of the first sealing caulking ring 31 ladder tread and valve gap 1 inside bottom surface and is provided with exterior seal ring 34; The second described sealing caulking ring 32 outer side surface to be inserted in the inner side surface of the first sealing caulking ring 31 and ladder surface one_to_one corresponding compacting between the two being fixedly connected with; The 3rd described sealing caulking ring 33 outer side surface to be inserted in the inner side surface of the second sealing caulking ring 32 and ladder surface one_to_one corresponding compacting between the two being fixedly connected with; The ladder surface of the inner side of the inner side surface of the first described sealing caulking ring 31 is corresponding with the lower surface of the second sealing caulking ring 32 and be provided with inner seal ring 35 between; The outermost ladder surface of the second described sealing caulking ring 32 outer side surface is corresponding with the upper surface of the first sealing caulking ring 31 and be provided with exterior seal ring 34 between; The ladder surface of inner side of the inner side surface of the second described sealing caulking ring 32 and the lower surface of the 3rd sealing caulking ring 33 and corresponding and be provided with inner seal ring 35 between; The outermost ladder surface of the 3rd described sealing caulking ring 33 outer side surface is corresponding with the upper surface of the second sealing caulking ring 32 and be provided with exterior seal ring 34 between; The outer surface of described valve gap 1 is provided with an opening and the inner side of the first sealing caulking ring 31 in black box 3 is provided with communicating passage and forms the first note filler mud passage 5, for injecting filler mud; The outer surface of described valve gap 2 is also provided with another opening and the inner side of the second sealing caulking ring 32 in black box 3 is provided with communicating passage and forms the second note filler mud passage 6, for injecting filler mud; Described valve gap 1 seals with the upper end open place in valve rod 2 and is provided with seal joint 4; Described seal joint 4 is pressed on black box 3 closely; The mode be fixedly connected with between the first described sealing caulking ring 31, second sealing caulking ring 32 and the 3rd sealing caulking ring 33 can connect for screw; Between the first described sealing caulking ring 31, second sealing caulking ring 32 and the 3rd sealing caulking ring 33, the orientation type of ladder surface one_to_one corresponding compacting is rigidity end contact; Described exterior seal ring 34 and inner seal ring 35 can be the seal ring of different hardness.
The working principle of the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve of the present embodiment: be divided into two sections from high to low according to pressure and seal respectively, inject filler mud by the first note filler mud passage 5 and the second note filler mud passage 6, realize the motive sealing of valve rod 2 with black box 3 and the static seal of valve gap 1 and valve rod 2; The ladder surface of each structure of black box 3 and the design of pressing mode thereof, each structure of black box 3 is made only to be subject to ladder pressure, instead of superposition pressure, thus the frictional force that each structure decreasing black box 3 produces valve rod 2, and then reduce the operational torque of valve rod.
Above-described embodiment should not limit the utility model by any way, and the technological scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection domain of the present utility model.
Claims (5)
1. for the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve, it is characterized in that: it comprises valve rod and is set in the valve gap on valve rod; Wherein, the lower end, space between described valve gap and valve rod is airtight, upper end open; Black box is provided with in space between described valve gap and valve rod; Described black box is made up of the first sealing caulking ring, the second sealing caulking ring and the 3rd sealing caulking ring from bottom to up successively; The outer side surface of the inner side surface of the first described sealing caulking ring outer side surface and inner side surface, the second sealing caulking ring and outer side surface, the 3rd sealing caulking ring is all stepped; The lower surface of the first described sealing caulking ring to be pressed in valve gap inside bottom surface and to be provided with exterior seal ring between the outside ladder surface of the first sealing caulking ring and valve gap inside bottom surface; The second described sealing caulking ring outer side surface to be inserted in the inner side surface of the first sealing caulking ring and ladder surface one_to_one corresponding compacting between the two being fixedly connected with; The 3rd described sealing caulking ring outer side surface to be inserted in the inner side surface of the second sealing caulking ring and ladder surface one_to_one corresponding compacting between the two being fixedly connected with; The ladder surface of the inner side of the inner side surface of the first described sealing caulking ring is corresponding with the lower surface of the second sealing caulking ring and be provided with inner seal ring between; The outermost ladder surface of the second described sealing caulking ring outer side surface is corresponding with the upper surface of the first sealing caulking ring and be provided with exterior seal ring between; The ladder surface of inner side of the inner side surface of the second described sealing caulking ring and the lower surface of the 3rd sealing caulking ring and corresponding and be provided with inner seal ring between; The outermost ladder surface of the 3rd described sealing caulking ring outer side surface is corresponding with the upper surface of the second sealing caulking ring and be provided with exterior seal ring between; The outer surface of described valve gap is provided with an opening and the inner side of the first sealing caulking ring in black box is provided with communicating passage and forms the first note filler mud passage, for injecting filler mud; The outer surface of described valve gap is also provided with another opening and the inner side of the second sealing caulking ring in black box is provided with communicating passage and forms the second note filler mud passage, for injecting filler mud.
2. the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve according to claim 1, is characterized in that: the upper end open place in described valve gap and valve rod seals and is provided with seal joint; Described seal joint is pressed on black box closely.
3. the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve according to claim 1, is characterized in that: the first described sealing caulking ring, the mode be fixedly connected with between the second sealing caulking ring and the 3rd sealing caulking ring can connect for screw.
4. the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve according to claim 1 or 3, is characterized in that: the orientation type of the first described sealing caulking ring, ladder surface one_to_one corresponding compacting between the second sealing caulking ring and the 3rd sealing caulking ring is rigidity end contact.
5. the valve rod stepped differential pressures sealing configuration for ultrahigh pressure pressure break gate valve according to claim 1, is characterized in that: described exterior seal ring and inner seal ring can be the seal ring of different hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585413.6U CN204083484U (en) | 2014-10-11 | 2014-10-11 | For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585413.6U CN204083484U (en) | 2014-10-11 | 2014-10-11 | For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve |
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|---|---|
| CN204083484U true CN204083484U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420585413.6U Active CN204083484U (en) | 2014-10-11 | 2014-10-11 | For the valve rod stepped differential pressures sealing configuration of ultrahigh pressure pressure break gate valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265993A (en) * | 2014-10-11 | 2015-01-07 | 苏州道森钻采设备股份有限公司 | Valve rod ladder pressure difference seal structure for ultrahigh pressure fracture brake valve |
-
2014
- 2014-10-11 CN CN201420585413.6U patent/CN204083484U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265993A (en) * | 2014-10-11 | 2015-01-07 | 苏州道森钻采设备股份有限公司 | Valve rod ladder pressure difference seal structure for ultrahigh pressure fracture brake valve |
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