CN113324064A - Low-temperature crystallization valve - Google Patents
Low-temperature crystallization valve Download PDFInfo
- Publication number
- CN113324064A CN113324064A CN202110620879.XA CN202110620879A CN113324064A CN 113324064 A CN113324064 A CN 113324064A CN 202110620879 A CN202110620879 A CN 202110620879A CN 113324064 A CN113324064 A CN 113324064A
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- Prior art keywords
- valve
- ball
- valve seat
- flange
- ball body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002425 crystallisation Methods 0.000 title claims abstract description 18
- 230000008025 crystallization Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 210000004907 gland Anatomy 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 15
- 239000010439 graphite Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 11
- 238000012856 packing Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000013078 crystal Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- VGIPUQAQWWHEMC-UHFFFAOYSA-N [V].[Mo].[Cr] Chemical compound [V].[Mo].[Cr] VGIPUQAQWWHEMC-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/204—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the plugs or parts of the plugs mechanically pressing the seals against the housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a low-temperature crystallization valve which comprises a valve body and a valve cavity arranged in the middle of the valve body, wherein a water inlet connecting flange is arranged on one side of the valve body, a water outlet connecting flange is arranged on the other side of the valve body, a gland flange is arranged at the top of the valve body, a three-way handle is arranged in the middle of the top of the gland flange, a ball body is arranged in the middle of the valve cavity, a first valve seat is arranged on one side, close to the water inlet connecting flange, of the ball body, a graphite gasket is arranged on the top of one side, far away from the ball body, of the first valve seat, and a pressure balancing hole is formed in one side, close to the ball body, of the first valve seat. According to the invention, the first valve seat, the graphite gasket, the pressure balance hole, the second valve seat, the graphite filler and the O-shaped sealing washer are arranged, so that the device can keep good sealing performance when in use, further the influence of various media entering between the ball body and the valve cavity on the torque of the valve is reduced, and the normal use and work of the device can be ensured.
Description
Technical Field
The invention relates to the technical field related to instruments and meters, in particular to a low-temperature crystallization valve.
Background
The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, has the functions of diversion, cut-off, throttling, non-return, shunt or overflow pressure relief and the like, can be divided into a shut-off valve, a check valve, a regulating valve and the like according to the functions, and is also divided into a cast iron valve, a cast steel valve, a stainless steel valve, a chromium molybdenum vanadium steel valve, a dual-phase steel valve, a plastic valve, a non-standard valve and the like according to the material.
The defects of the prior art are as follows: when the working condition of the valve adopted at the present stage is-196 ℃ working condition temperature and in a special easy-crystallization medium, the valve has relatively common tightness, and the medium is easy to crystallize at low temperature, so that a ball body and a valve seat in a valve cavity are blocked, the torque required by the valve is increased, and the normal work of the device is influenced.
Disclosure of Invention
The invention aims to provide a low-temperature crystallization valve, which solves the problem that when the working condition of the valve adopted at the present stage is-196 ℃ working condition temperature and in a special easy-crystallization medium, the sealing property of the valve is relatively common, and further the medium is easy to crystallize at low temperature, so that a ball body and a valve seat in a valve cavity are blocked, the torque required by the valve is increased, and the normal work of the device is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a low temperature crystallization valve, includes the valve body and sets up the valve pocket at the valve body intermediate position, valve body one side is provided with into water flange, the valve body opposite side is provided with out water flange, just the valve body top is provided with the gland flange, gland flange top intermediate position is provided with three-way handle, the inside intermediate position of valve pocket is provided with the spheroid, the spheroid is close to into water flange one side and is provided with first disk seat, spheroid one side top is kept away from to first disk seat is provided with the graphite gasket, just first disk seat is close to spheroid one side inside and has seted up pressure balance hole, the spheroid is kept away from into water flange one side and is provided with the second disk seat, spheroid one side top is kept away from to the second disk seat is provided with the graphite packing, just the outer wall is kept away from spheroid one side by the second disk seat and is provided with O type seal ring.
Preferably, a valve rod is connected to the middle position of the bottom of the three-way handle, the bottom end of the valve rod is fixedly connected with the top of the ball body, and the upper position of the bottom of the valve rod is connected with the inner wall of the gland flange through a bearing.
Preferably, the two sides of the middle upper position of the valve rod are respectively provided with a packing group, and the bottom of each packing group is provided with a packing backing ring.
Preferably, a filling gap is arranged between the ball body and the valve cavity, and a sealing filler is arranged in the filling gap.
Preferably, both sides of the bottom of the gland flange are provided with connecting bolts, and the gland flange is fixedly connected with the bottom of the valve body through the connecting bolts.
Preferably, a fixing frame is arranged at the top of the three-way handle, a fixing bolt is arranged on one side of the fixing frame, a handle steel pipe is arranged in the middle of the inside of the fixing frame, and the fixing frame is fixedly connected with the handle steel pipe through the fixing bolt.
Preferably, the clearance between the two sides of the sealing surface of the second valve seat and the outer wall of the ball body is gradually increased from top to bottom.
The invention provides a low-temperature crystallization valve which has the following beneficial effects:
(1) the invention can provide pretightening force for the first valve seat through the graphite gasket at the top of one side of the first valve seat when in use, so that the whole structure in the device is more compact, the easily crystallized medium is not easy to form crystals in gaps between parts when the device is in a low-temperature working condition, the sealing performance of the device can be ensured, the abnormal boosting of a valve cavity can be prevented from damaging parts by drilling the pressure balance hole on the first valve seat, the normal sealing effect of a sealing element is further ensured, the sealing performance of the device is further ensured, further, the graphite gasket is arranged on the outer diameter of the second valve seat, the pre-compressed end face O-shaped sealing washer is arranged at the bottom of one side, and low-pressure media from the inner side and the outer side can be sealed, and then the leakproofness of device use has further been improved to make the device can keep good leakproofness when using, and then reduce the influence to the valve moment of torsion that various media got into between spheroid and the valve pocket, thereby can guarantee the normal use work of device.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 1 at B according to the present invention;
fig. 4 is a schematic diagram of a sphere structure according to the present invention.
In the figure: 1. a valve body; 2. a valve cavity; 3. a water inlet connecting flange; 4. a water outlet connecting flange; 5. a gland flange; 6. a three-way handle; 7. a sphere; 8. a first valve seat; 9. a graphite gasket; 10. a pressure balance hole; 11. a second valve seat; 12. graphite filler; 13. an O-shaped sealing gasket; 14. a valve stem; 15. a filler group; 16. a packing grommet; 17. sealing the filler; 18. a connecting bolt; 19. a fixed mount; 20. fixing the bolt; 21. handle steel pipe.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 4, the present invention provides a technical solution: a low-temperature crystallization valve comprises a valve body 1 and a valve cavity 2 arranged in the middle of the valve body 1, wherein one side of the valve body 1 is provided with a water inlet connecting flange 3, the other side of the valve body 1 is provided with a water outlet connecting flange 4, a gland flange 5 is arranged at the top of the valve body 1, a three-way handle 6 is arranged at the middle position of the top of the gland flange 5, a ball body 7 is arranged in the middle of the interior of the valve cavity 2, a first valve seat 8 is arranged on one side of the ball body 7 close to the water inlet connecting flange 3, a graphite gasket 9 is arranged on the top of one side of the first valve seat 8 far away from the ball body 7, a pressure balance hole 10 is arranged in one side of the first valve seat 8 close to the ball body 7, a second valve seat 11 is arranged on one side of the ball body 7 far away from the water inlet connecting flange 3, a graphite filler 12 is arranged on the top of one side of the second valve seat 11 far away from the ball body 7, and an O-shaped sealing gasket 13 is arranged on the outer wall of the second valve seat 11 at the side far away from the ball body 7.
Further, the middle position of the bottom of the three-way handle 6 is connected with a valve rod 14, the bottom end of the valve rod 14 is fixedly connected with the top of the ball body 7, the upper position of the bottom of the valve rod 14 is connected with the inner wall of the gland flange 5 through a bearing, and the valve rod 14 is arranged, so that the rotation control of a user on the ball body 7 is facilitated, and the control of the user on the valve body 1 is further facilitated.
Furthermore, packing groups 15 are arranged on two sides of the middle upper position of the valve rod 14, packing backing rings 16 are arranged at the bottoms of the packing groups 15, and the sealing performance between the valve rod 14 and the gland flange 5 is further ensured through the arranged packing groups 15 and the packing backing rings 16.
Further, a filling gap is formed between the ball body 7 and the valve cavity 2, a sealing filler 17 is arranged in the filling gap, and the sealing filler 17 is arranged in the filling gap between the ball body 7 and the valve cavity 2, so that the sealing filler 17 can support the ball body 7 at the upper position and the lower position and can fill the gap of the inner cavity, and further, the crystallization of a medium in the valve cavity 2 is reduced, and the valve rod 14 and the ball body 7 are prevented from being blocked.
Furthermore, both sides of the bottom of the gland flange 5 are provided with connecting bolts 18, and the gland flange 5 is fixedly connected with the bottom of the valve body 1 through the connecting bolts 18.
Further, a fixing frame 19 is arranged at the top of the three-way handle 6, a fixing bolt 20 is arranged on one side of the fixing frame 19, a handle steel pipe 21 is arranged in the middle of the inside of the fixing frame 19, and the fixing frame 19 is fixedly connected with the handle steel pipe 21 through the fixing bolt 20. The handle steel tube 21 is arranged to facilitate the steering control of the device for the user.
Furthermore, the gap between the two sides of the sealing surface of the second valve seat 11 and the outer wall of the ball body 7 is gradually increased from top to bottom, and the gap between the two sides of the sealing surface of the second valve seat 11 and the outer wall of the ball body 7 is gradually increased from top to bottom, so that crystals stuck on the ball surface can be removed conveniently when the ball body 7 is opened and closed.
The working principle is as follows: when in use, the graphite gasket 9 on the top of one side of the first valve seat 8 can provide pre-tightening force for the first valve seat 8, so that the whole structure in the device is more compact, further, when the device is under the low-temperature working condition, the medium which is easy to crystallize is not easy to form crystals in the gaps among the parts, and the clearance between the two sides of the sealing surface of the second valve seat 11 and the outer wall of the sphere 7 is gradually increased from top to bottom, so that the crystal substances stuck on the sphere can be removed conveniently when the sphere 7 is opened and closed, further, the sealing performance of the device can be ensured, and the pressure balance hole 10 is drilled on the first valve seat 8, so that the abnormal pressure rise of the valve cavity 2 can be prevented from damaging parts, and further, graphite packing 12 is arranged on the outer diameter of the second valve seat 11, and a pre-compressed end face O-shaped sealing washer 13 is arranged at the bottom of one side of the second valve seat, so that low-pressure media from the inner side and the outer side can be sealed, and the sealing performance of the device is further improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a low temperature crystallization valve, includes valve body (1) and sets up valve pocket (2) in valve body (1) intermediate position, its characterized in that: a water inlet connecting flange (3) is arranged on one side of the valve body (1), a water outlet connecting flange (4) is arranged on the other side of the valve body (1), a gland flange (5) is arranged on the top of the valve body (1), a three-way handle (6) is arranged at the middle position of the top of the gland flange (5), a ball (7) is arranged at the middle position inside the valve cavity (2), a first valve seat (8) is arranged on one side, close to the water inlet connecting flange (3), of the ball (7), a graphite gasket (9) is arranged on the top of one side, far away from the ball (7), of the first valve seat (8), a pressure balance hole (10) is formed inside one side, close to the ball (7), of the ball (7), a second valve seat (11) is arranged on one side, far away from the water inlet connecting flange (3), of the second valve seat (11), and a graphite filler (12) is arranged on the top of one side, far away from the ball (7), of the second valve seat (11), and an O-shaped sealing gasket (13) is arranged on the outer wall of one side, away from the ball body (7), of the second valve seat (11).
2. A cryogenic crystallization valve according to claim 1, wherein: the middle position of the bottom of the three-way handle (6) is connected with a valve rod (14), the bottom end of the valve rod (14) is fixedly connected with the top of the ball body (7), and the upper position of the bottom of the valve rod (14) is connected with the inner wall of the gland flange (5) through a bearing.
3. A cryogenic crystallization valve according to claim 2, wherein: and both sides of the middle upper position of the valve rod (14) are provided with packing groups (15), and the bottoms of the packing groups (15) are provided with packing backing rings (16).
4. A cryogenic crystallization valve according to claim 1, wherein: a filling gap is arranged between the ball body (7) and the valve cavity (2), and a sealing filler (17) is arranged in the filling gap.
5. A cryogenic crystallization valve according to claim 1, wherein: the valve is characterized in that connecting bolts (18) are arranged on two sides of the bottom of the gland flange (5), and the gland flange (5) is fixedly connected with the bottom of the valve body (1) through the connecting bolts (18).
6. A cryogenic crystallization valve according to claim 1, wherein: the tee joint handle is characterized in that a fixing frame (19) is arranged at the top of the tee joint handle (6), a fixing bolt (20) is arranged on one side of the fixing frame (19), a handle steel pipe (21) is arranged in the middle of the inside of the fixing frame (19), and the fixing frame (19) is fixedly connected with the handle steel pipe (21) through the fixing bolt (20).
7. A cryogenic crystallization valve according to claim 1, wherein: gaps between two sides of the sealing surface of the second valve seat (11) and the outer wall of the ball body (7) are gradually increased from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620879.XA CN113324064A (en) | 2021-06-03 | 2021-06-03 | Low-temperature crystallization valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620879.XA CN113324064A (en) | 2021-06-03 | 2021-06-03 | Low-temperature crystallization valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113324064A true CN113324064A (en) | 2021-08-31 |
Family
ID=77419582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110620879.XA Pending CN113324064A (en) | 2021-06-03 | 2021-06-03 | Low-temperature crystallization valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113324064A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629388A (en) * | 2013-11-27 | 2014-03-12 | 凯喜姆阀门有限公司 | Low-temperature fixed ball valve |
| CN104653809A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Pressure balanced metal valve seat sealing structure of high pressure adjusting ball valve |
| CN204852424U (en) * | 2015-06-12 | 2015-12-09 | 浙江成高阀门有限公司 | Small -bore ultra -low temperature ball valve that floats |
| CN205479444U (en) * | 2016-01-22 | 2016-08-17 | 上海瑞托阀门科技有限公司 | Forge unsteady ball valve of ultra -low temperature upper assembling type of valve body |
| CN107781463A (en) * | 2016-08-31 | 2018-03-09 | 天津永升阀门有限公司 | A kind of flanged ball valve threeway |
| CN207648188U (en) * | 2017-12-22 | 2018-07-24 | 福建省智胜矿业有限公司 | The ceramic ball valve of filler is set in a kind of |
| CN108757983A (en) * | 2018-05-21 | 2018-11-06 | 西诺威阀门控制（苏州）有限公司 | Ultralow temperature floating ball valve |
| CN209743643U (en) * | 2018-12-20 | 2019-12-06 | 浙江阀毕威阀门有限公司 | Zero valve pocket ball valve |
| CN111022695A (en) * | 2020-01-07 | 2020-04-17 | 中国船舶重工集团公司第七二五研究所 | High-temperature graphite sealing titanium alloy ball valve |
| CN112013126A (en) * | 2020-08-21 | 2020-12-01 | 肯卓自控工程(江苏)有限公司 | Pressure balance type adjusting ball valve |
-
2021
- 2021-06-03 CN CN202110620879.XA patent/CN113324064A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629388A (en) * | 2013-11-27 | 2014-03-12 | 凯喜姆阀门有限公司 | Low-temperature fixed ball valve |
| CN104653809A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Pressure balanced metal valve seat sealing structure of high pressure adjusting ball valve |
| CN204852424U (en) * | 2015-06-12 | 2015-12-09 | 浙江成高阀门有限公司 | Small -bore ultra -low temperature ball valve that floats |
| CN205479444U (en) * | 2016-01-22 | 2016-08-17 | 上海瑞托阀门科技有限公司 | Forge unsteady ball valve of ultra -low temperature upper assembling type of valve body |
| CN107781463A (en) * | 2016-08-31 | 2018-03-09 | 天津永升阀门有限公司 | A kind of flanged ball valve threeway |
| CN207648188U (en) * | 2017-12-22 | 2018-07-24 | 福建省智胜矿业有限公司 | The ceramic ball valve of filler is set in a kind of |
| CN108757983A (en) * | 2018-05-21 | 2018-11-06 | 西诺威阀门控制（苏州）有限公司 | Ultralow temperature floating ball valve |
| CN209743643U (en) * | 2018-12-20 | 2019-12-06 | 浙江阀毕威阀门有限公司 | Zero valve pocket ball valve |
| CN111022695A (en) * | 2020-01-07 | 2020-04-17 | 中国船舶重工集团公司第七二五研究所 | High-temperature graphite sealing titanium alloy ball valve |
| CN112013126A (en) * | 2020-08-21 | 2020-12-01 | 肯卓自控工程(江苏)有限公司 | Pressure balance type adjusting ball valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210831 |
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| RJ01 | Rejection of invention patent application after publication |