CN221196148U - Double-ball valve - Google Patents
Double-ball valve Download PDFInfo
- Publication number
- CN221196148U CN221196148U CN202323021187.7U CN202323021187U CN221196148U CN 221196148 U CN221196148 U CN 221196148U CN 202323021187 U CN202323021187 U CN 202323021187U CN 221196148 U CN221196148 U CN 221196148U
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- valve seat
- valve
- hard
- soft
- seat sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 80
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a double-ball valve, relates to the field of ball valves, and solves the problem of leakage caused by easy failure of ultrahigh-pressure soft seal. The valve comprises a valve body, wherein a valve cavity is formed in the valve body, two spheres for opening and closing and a soft sealing valve seat are arranged in the valve cavity, a hard valve seat sleeve and a soft valve seat sleeve which are arranged in a split mode are arranged at the inlet and the outlet of the valve cavity, a hard valve seat sleeve is arranged in the valve cavity, a soft valve seat sleeve is arranged in the hard valve seat sleeve, a soft sealing valve seat is arranged on the soft valve seat sleeve, a hard sealing layer is fixed on the hard valve seat sleeve, and the hard sealing layer and the corresponding spheres form hard sealing fit. A hard seal cover is sleeved outside the soft valve seat, and then the hard seal layer and the ball body are used for forming seal, so that soft and hard double seal is formed, the effectiveness of seal is ensured, the whole valve can better bear the fluid working condition environment of high pressure and even ultrahigh pressure, leakage is greatly reduced, the sealing effect of the soft and hard seal pair is longer and more effective, and the requirement of the hard seal working condition can be met.
Description
Technical Field
The utility model relates to the field of ball valves, in particular to a double-ball valve.
Background
The double ball valve is a combined valve composed of two spheres, and the requirements on the valve are very high because the working condition environment of the valve is very strict. At present, chinese patent with publication number of CN213451814U discloses an ultrahigh pressure double-ball valve, wherein a valve seat assembly comprises an annular soft valve seat and a metal valve seat, a sealing cambered surface which is attached to the outer side surface of the valve ball is arranged on the soft valve seat, the soft valve seat is in clamping fit with the metal valve seat, and the sealing cambered surface on the soft valve seat can be better attached to the outer side surface of the valve ball, so that a gap between the metal valve seat and the valve ball can be better blocked by the soft valve seat; the soft valve seat is clamped in the metal valve seat, so that the soft valve seat is connected with the metal valve seat more stably, and further, larger fluid pressure can be resisted. However, the soft seal realized by only relying on the soft valve seat is likely to fail due to the too high pressure under the ultra-high pressure condition, even the ultra-high pressure medium damages the soft valve seat, so that the seal fails to cause leakage, and the hard seal requirement of certain working conditions and the ultra-high pressure working condition environment can not be met.
Disclosure of Invention
The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides a double-ball valve, which solves the problem of leakage caused by easy failure of ultrahigh-pressure soft seal.
The technical scheme of the utility model is as follows: the valve comprises a valve body, wherein a valve cavity is formed in the valve body, two spheres for opening and closing and a soft sealing valve seat are arranged in the valve cavity, a hard valve seat sleeve and a soft valve seat sleeve which are arranged in a split mode are arranged at the inlet and the outlet of the valve cavity, a hard valve seat sleeve is arranged in the valve cavity, a soft valve seat sleeve is arranged in the hard valve seat sleeve, a soft sealing valve seat is arranged on the soft valve seat sleeve, a hard sealing layer is fixed on the hard valve seat sleeve, and the hard sealing layer and the corresponding spheres form hard sealing fit.
By adopting the technical scheme, the hard sealing sleeve is sleeved outside the soft valve seat, the hard sealing layer and the ball body are utilized to form sealing, so that soft and hard double sealing is formed, the sealing effectiveness is ensured, the whole valve can better bear the fluid working condition environment of high pressure and even ultrahigh pressure, leakage is greatly reduced, the sealing effect of the soft and hard sealing pair is longer and more effective, and the requirement of the hard sealing working condition can be met.
In one possible design, the hard valve seat cover is screwed with the soft valve seat cover and the valve cavity, respectively.
By adopting the design, the relative positions of the hard valve seat sleeve and the soft valve seat sleeve can be adjusted in the valve cavity through screw rotation, so that the compression degree of the hard sealing layer and the soft valve seat to the ball body can be adjusted, the conditions such as working condition environment and opening and closing torque can be adjusted adaptively, and even one sealing pair can be selected, so that the valve is wider in applicable range and improves the applicability of the valve.
In one possible design, an adjusting limiting ring with adjustable thickness is further arranged in the valve cavity, the adjusting limiting ring is connected with the cavity wall of the valve cavity through threads, and the adjusting limiting ring is in abutting contact with the outer end faces of the hard valve seat sleeve and the soft valve seat sleeve.
By adopting the design, after the positions of the hard valve seat sleeve and the soft valve seat sleeve are pre-adjusted, the outer end surfaces of the hard valve seat sleeve and the soft valve seat sleeve are covered and provided with the adjusting limiting rings with proper thickness, one side of each adjusting limiting ring is propped against the outer end surfaces of the hard valve seat sleeve and the soft valve seat sleeve, and the other side of each adjusting limiting ring is propped against the flange end surface of the pipeline, so that the limiting of the hard valve seat sleeve and the soft valve seat sleeve is realized, and the hard valve seat sleeve and the soft valve seat sleeve cannot be easily shifted in the using process.
In one possible design, a right angle groove is formed in the inner end face of the soft valve seat sleeve, the soft sealing valve seat is arranged in the right angle groove, and a disc spring and a compression ring are further arranged between the soft sealing valve seat and the right angle groove.
By adopting the design, the disc spring is used for forming elastic compensation for the soft sealing valve seat so as to enhance the sealing performance of the soft sealing.
In one possible design, a boss is formed at the outer end of the hard valve seat sleeve, a sealing gasket is installed between the boss and the valve cavity wall, and a sealing ring is installed between the hard valve seat sleeve and the valve cavity wall.
By adopting the design, leakage can exist in a gap between the hard valve seat sleeve and the valve cavity, and the gap is sealed by the sealing gasket and the sealing ring, so that the leakage quantity is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;
FIG. 3 is an enlarged partial view of the hard seat sleeve of the present utility model in a retracted state;
Wherein, 1, the valve body; 11. a valve cavity; 2. a sphere; 3. soft sealing the valve seat; 4. a hard valve seat cover; 31. a soft valve seat cover; 41. a hard seal layer; 5. adjusting a limiting ring; 311. a right angle slot; 32. a disc spring; 33. a compression ring; 42. a boss; 43. a sealing gasket; 44. and (3) sealing rings.
Detailed Description
The double-ball valve shown in fig. 1-3 comprises a valve body 1, wherein a valve cavity 11 is formed in the valve body 1, two spheres 2 for opening and closing and a soft sealing valve seat 3 are arranged in the valve cavity 11, a hard valve seat sleeve 4 and a soft valve seat sleeve 31 which are mutually separated are arranged at the inlet and outlet positions of the valve cavity 11, the hard valve seat sleeve 4 is internally sleeved in the valve cavity 11, the soft valve seat sleeve 31 is internally sleeved in the hard valve seat sleeve 4, the soft sealing valve seat 3 is arranged on the soft valve seat sleeve 31, a hard sealing layer 41 is fixed on the hard valve seat sleeve 4, and the hard sealing layer 41 on each side and one sphere 2 on the corresponding side form hard sealing fit. The double sealing structure can greatly improve the sealing performance of the valve, ensure that the fluid can realize sealing under the high pressure or ultra-high pressure 33 environment, and further reduce the possibility of leakage. In addition, the soft and hard double sealing structure can enable the valve to better bear the fluid working condition environment of high pressure and even ultrahigh pressure, thereby greatly reducing leakage. Meanwhile, the sealing effect of the soft and hard sealing pair is longer and more effective, the requirements of the hard sealing working condition can be met, the sealing performance of the valve and the capability of bearing high pressure are improved, and meanwhile, the requirements of the hard sealing working condition can also be met.
The hard valve seat sleeve 4 is adjusted with the soft valve seat sleeve 31 and the valve cavity 11 in a threaded connection mode, and the relative position between the hard valve seat sleeve 4 and the soft valve seat sleeve 31 is adjusted by rotating threads. Through the adjustment, a user can accurately control the compression degree of the hard sealing layer 41 and the soft valve seat on the ball body 2, so that the adjustment flexibility of the soft sealing and the hard sealing is improved, and the valve can be adaptively adjusted according to different working condition environments, opening and closing torque and other conditions. In addition, if only one sealing pair is needed, only one sealing pair can be selected to be used, for example, the hard sealing seat sleeve is retracted away from contact with the ball body 2, and then the soft sealing valve seat 3 is used, so that the application range of the valve is greatly widened, and the applicability of the valve is improved.
An adjusting limiting ring 5 with adjustable thickness is further arranged in the valve cavity 11, the adjusting limiting ring 5 is connected with the cavity wall of the valve cavity 11 through threads, and the adjusting limiting ring 5 is in abutting contact with the outer end surfaces of the hard valve seat sleeve 4 and the soft valve seat sleeve 31. After the positions of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 are pre-adjusted, the outer end surfaces of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 are covered and provided with the adjusting limiting rings 5 with proper thickness, one side of each adjusting limiting ring 5 is propped against the outer end surfaces of the hard valve seat sleeve 4 and the soft valve seat sleeve 31, and the other side is propped against the flange end surface of the pipeline, so that the limiting of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 is realized, and the hard valve seat sleeve 4 and the soft valve seat sleeve 31 cannot easily shift in the using process.
An adjusting limiting ring 5 is arranged in the valve cavity 11, the thickness of the adjusting limiting ring 5 can be adjusted according to the requirement, the adjusting limiting ring is tightly connected with the cavity wall of the valve cavity 11 in a threaded mode, the adjusting limiting ring 5 can be in threaded connection with the cavity wall of the valve cavity 11, and the adjusting limiting ring can be tightly contacted with the outer end faces of the hard valve seat sleeve 4 and the soft valve seat sleeve 31, so that effective work of the limiting ring is ensured. In order to ensure that the positions of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 after being installed are accurate, the preset positions of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 are critical, once the positions are determined, the outer end faces of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 are covered and are provided with the adjusting limiting rings 5 with proper thickness, one side of each adjusting limiting ring 5 is tightly propped against the outer end faces of the hard valve seat sleeve 4 and the soft valve seat sleeve 31, and the other side of each adjusting limiting ring is propped against the flange end faces of a pipeline, so that double limiting of the hard valve seat sleeve 4 and the soft valve seat sleeve 31 is realized. In addition, the two adjusting limiting rings 5 can be respectively contacted with the hard valve seat sleeve 4 and the soft valve seat sleeve 31 correspondingly.
The right angle groove 311 is arranged on the inner end surface of the soft valve seat sleeve 31, the soft sealing valve seat 3 is arranged in the right angle groove 311, the disc spring 32 and the compression ring 33 are also arranged between the soft sealing valve seat 3 and the right angle groove 311, and the compression ring 33 is positioned between the soft sealing valve seat 3 and the disc spring 32. The disc spring 32 has excellent elastic performance and can be correspondingly deformed along with the change of pressure, so that elastic compensation is formed on the soft sealing valve seat 3. The elastic compensation can enhance the sealing performance of the soft seal, so that the valve can keep good sealing effect under various different working conditions. The compression ring 33 plays a role in fixing the soft sealing valve seat 3 and preventing the soft sealing valve seat from displacement or falling off in the working process. Meanwhile, the compression ring 33 can also effectively protect the soft sealing valve seat 3 from being mechanically damaged or worn by the outside.
The outer end of the hard valve sleeve 4 is provided with a boss 42 of a specific shape and size, and this boss 42 is tightly fitted to the wall of the valve chamber 11 to ensure the sealing effect. To further enhance the sealing performance, a sealing gasket 43 is installed between the boss 42 and the wall of the valve chamber 11, and the sealing gasket 43 is generally made of a high-elasticity and corrosion-resistant material, so as to ensure that good sealing performance can be maintained under high pressure. In addition, a sealing ring 44 is also arranged between the hard valve seat sleeve 4 and the cavity wall of the valve cavity 11, and the sealing ring 44 can effectively prevent medium leakage, so that the sealing performance of the whole valve is further improved.
Claims (5)
1. The utility model provides a two ball valves, is including valve body (1), offer valve pocket (11) in valve body (1), install two spheroids (2) and soft seal disk seat (3) that open and close usefulness in valve pocket (11), its characterized in that: the valve is characterized in that a hard valve seat sleeve (4) and a soft valve seat sleeve (31) which are arranged in a split mode are arranged at the inlet and outlet positions of the valve cavity (11), the hard valve seat sleeve (4) is internally sleeved in the valve cavity (11), the soft valve seat sleeve (31) is internally sleeved in the hard valve seat sleeve (4), the soft valve seat (3) is arranged on the soft valve seat sleeve (31), a hard sealing layer (41) is fixed on the hard valve seat sleeve (4), and the hard sealing layer (41) and a corresponding ball body (2) form hard sealing fit.
2. The two-ball valve of claim 1, wherein: the hard valve seat sleeve (4) is respectively in threaded connection with the soft valve seat sleeve (31) and the valve cavity (11).
3. The two-ball valve according to claim 1 or 2, characterized in that: the valve cavity (11) is internally provided with an adjusting limiting ring (5) with adjustable thickness, the adjusting limiting ring (5) is connected with the cavity wall of the valve cavity (11) through threads, and the adjusting limiting ring (5) is in propping contact with the outer end surfaces of the hard valve seat sleeve (4) and the soft valve seat sleeve (31).
4. The two-ball valve according to claim 1 or 2, characterized in that: a right-angle groove (311) is formed in the inner end face of the soft valve seat sleeve (31), the soft sealing valve seat (3) is arranged in the right-angle groove (311), and a disc spring (32) and a compression ring (33) are further arranged between the soft sealing valve seat (3) and the right-angle groove (311).
5. The two-ball valve according to claim 1 or 2, characterized in that: a boss (42) is formed at the outer side end position of the hard valve seat sleeve (4), a sealing gasket (43) is arranged between the boss (42) and the cavity wall of the valve cavity (11), and a sealing ring (44) is arranged between the hard valve seat sleeve (4) and the cavity wall of the valve cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323021187.7U CN221196148U (en) | 2023-11-08 | 2023-11-08 | Double-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323021187.7U CN221196148U (en) | 2023-11-08 | 2023-11-08 | Double-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221196148U true CN221196148U (en) | 2024-06-21 |
Family
ID=91488856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323021187.7U Active CN221196148U (en) | 2023-11-08 | 2023-11-08 | Double-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221196148U (en) |
-
2023
- 2023-11-08 CN CN202323021187.7U patent/CN221196148U/en active Active
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