CN113864478A - Drainage ball valve for high-temperature and high-pressure power station - Google Patents
Drainage ball valve for high-temperature and high-pressure power station Download PDFInfo
- Publication number
- CN113864478A CN113864478A CN202111174596.3A CN202111174596A CN113864478A CN 113864478 A CN113864478 A CN 113864478A CN 202111174596 A CN202111174596 A CN 202111174596A CN 113864478 A CN113864478 A CN 113864478A
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- hole
- valve seat
- square
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 45
- 238000012856 packing Methods 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 15
- 239000010439 graphite Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 19
- 238000004804 winding Methods 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 4
- 230000001066 destructive effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011797 cavity material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K5/08—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
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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 drainage ball valve for a high-temperature and high-pressure power station, which comprises a left valve body, a ball body and a right valve body, wherein an upstream valve seat assembly is arranged between the ball body and the left valve body, and a downstream valve seat assembly is arranged between the ball body and the right valve body; the upper reaches disk seat subassembly includes cascaded upper reaches disk seat, and the internal face of left side valve body aims at cascaded upper reaches disk seat position and is provided with first step groove, has set gradually first graphite sealing ring, has run from left to right between first step groove and the cascaded upper reaches disk seat, has run from opposite directions ring, first dish spring, packing clamping ring and weave the packing group, all sets up at first closed spring intracavity to run from opposite directions ring, first dish spring and packing clamping ring, weave the packing group and weave graphite rope by the double circle and constitute, the right-hand member and the spheroid of cascaded upper reaches disk seat compress tightly sealedly. Above-mentioned technical scheme, structural design is reasonable, job stabilization, sealing performance are good, long service life and practicality are good.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a drainage ball valve for a high-temperature and high-pressure power station.
Background
Ball valve, the open-close piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like.
However, the existing ball valve has the following defects: the structure is unreasonable, under the working condition of high temperature and high pressure, impurities, dust and other dirt can easily enter the spring cavity to be blocked, so that the spring is ineffective in elasticity, easy to leak and unstable in work; when the ball valve is in small opening, the sectional area is small, so that the flow velocity is too high to cause destructive washing, the service life of the valve is influenced, the service life is short, and the practicability is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the high-temperature and high-pressure power station drainage ball valve which is reasonable in structural design, stable in work, good in sealing performance, long in service life and good in practicability.
In order to achieve the purpose, the invention provides the following technical scheme: a drainage ball valve for a high-temperature and high-pressure power station comprises a left valve body, a ball body and a right valve body, wherein the left valve body and the right valve body are detachably arranged, the ball body is positioned between the left valve body and the right valve body, an upstream valve seat assembly is arranged between the ball body and the left valve body, and a downstream valve seat assembly is arranged between the ball body and the right valve body; upstream disk seat subassembly includes cascaded upper reaches disk seat, the internal face of left side valve body is aimed at cascaded upper reaches disk seat position and is provided with first step groove, set gradually first graphite sealing ring, to opening ring, first dish spring, packing clamping ring and weave the packing group from a left side to the right side between first step groove and the cascaded upper reaches disk seat, left side valve body, first graphite sealing ring and weave and constitute a first closed spring chamber between the packing group, to opening ring, first dish spring and packing clamping ring and all set up in first closed spring intracavity, weave the packing group and weave graphite rope by the double ring and constitute, the right-hand member and the spheroid of cascaded upper reaches disk seat compress tightly sealedly.
The invention is further configured to: the low reaches disk seat subassembly includes cascaded low reaches disk seat, the internal face of right side valve body is aimed at cascaded low reaches disk seat position and is provided with the second step groove, outside winding pad, second dish spring and inboard winding pad have set gradually from a left side to the right side between second step groove and the cascaded low reaches disk seat, constitute a closed spring chamber of second between cascaded low reaches disk seat, right valve body, the outside winding pad and the inboard winding pad, the second dish spring is located the closed spring intracavity of second, the left end and the spheroid of cascaded low reaches disk seat compress tightly sealedly.
The invention is further configured to: an upstream round-square transition flow passage is arranged in the left valve body, a left port of the upstream round-square transition flow passage is a round hole, and a right port of the upstream round-square transition flow passage is a square hole; the stepped upstream valve seat is provided with a first square through hole at the position aligned with the upstream round-square transition flow passage, and the ball body is provided with a second square through hole at the position aligned with the first square through hole.
The invention is further configured to: a second conical through hole is formed in the right valve seat, and the diameter of a left port of the second conical through hole is smaller than that of a right port; and a third square through hole is formed in the position, aligned with the second conical through hole, of the stepped downstream valve seat.
The invention is further configured to: the axial center lines of the upstream round-square transition flow passage, the first square through hole, the second conical through hole and the third square through hole are mutually overlapped.
The invention is further configured to: be provided with metal packing ring between left side valve body and the right valve body, and left side valve body passes through bolt locking with the right valve body and fixes, just the spheroid position is aimed at to right side valve body upper end and sets up the vertical valve rod through-hole that is provided with, wear to be equipped with a valve rod in the valve rod through-hole, valve rod lower extreme and spheroid upper end fixed connection, be provided with on the internal face of valve rod through-hole and prevent blowing off spacing lug, prevent blowing off spacing lug upper end and be provided with the filler, the valve rod pot head is equipped with the valve gap, the valve gap lower extreme compresses tightly the filler upper end, just wear to be equipped with a plurality of connecting bolt on the valve gap, and the valve gap passes through connecting bolt to be fixed in right side valve body upper end.
The invention has the advantages that: compared with the prior art, the structure of the invention is more reasonable, a first closed spring cavity is formed among the stepped upstream valve seat, the left valve body, the first graphite sealing ring and the woven packing set of the upstream valve seat assembly, the split ring, the first disc spring and the packing press ring are all arranged in the first closed spring cavity, a second closed spring cavity is formed among the stepped downstream valve seat, the right valve body, the outer side winding pad and the inner side winding pad of the downstream valve seat assembly, the second disc spring is positioned in the second closed spring cavity, so that the impurities, dust and other dirt are effectively prevented from entering the spring cavity to be blocked, the spring force can not be blocked, the work is stable, and the sealing performance of each valve seat is good; an upstream round and square transition flow passage is arranged in the upper left valve body, a first square through hole is formed in the position, aligned with the upstream round and square transition flow passage, of the stepped upstream valve seat, a second square through hole is formed in the position, aligned with the first square through hole, of the ball body, the cross-sectional area is enlarged under the same opening degree, the problem that the service life of the valve is influenced due to destructive washing caused by overhigh flow speed caused by small cross-sectional area when the existing ball valve is in small opening degree is solved, and the ball valve is long in service life and good in practicability.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is an enlarged view of section II of FIG. 1;
FIG. 4 is a schematic cross-sectional view of a first square via and a second square via;
FIG. 5 is a left side schematic view of the left valve body;
fig. 6 is a schematic cross-sectional view of the left valve body.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 6, the drainage ball valve for the high-temperature and high-pressure power station disclosed by the invention comprises a left valve body 1, a ball body 2 and a right valve body 3, wherein the left valve body 1 and the right valve body 3 are detachably arranged, the ball body 2 is positioned between the left valve body 1 and the right valve body 3, an upstream valve seat assembly 4 is arranged between the ball body 2 and the left valve body 1, and a downstream valve seat assembly 5 is arranged between the ball body 2 and the right valve body 3; upstream valve seat subassembly 4 includes cascaded upstream valve seat 41, the internal face of left side valve body 1 aims at cascaded upstream valve seat 41 position and is provided with first step groove, set gradually first graphite sealing ring 42, run from left to right between first step groove and the cascaded upstream valve seat 41, to opening ring 43, first dish spring 44, packing clamping ring 45 and weave packing group 46, cascaded upstream valve seat 41, left valve body 1, first graphite sealing ring 42 and weave and constitute a first closed spring chamber between packing group 46, run from opposite directions ring 43, first dish spring 44 and packing clamping ring 45 and all set up in first closed spring chamber, weave packing group 46 and weave graphite rope by two circles and constitute, the right-hand member and the spheroid 2 of cascaded upstream valve seat 41 compress tightly sealed.
Preferably, the first graphite sealing ring 42 is a first primary seal, and adopts an existing large-section molded graphite ring; the braided packing set 46 is a second seal and is formed using conventional double-loop small cross-section braided graphite rope. This structure had both prevented that filth dust etc. from getting into the spring chamber and blockked up the spring, simultaneously because twice sealed design, greatly improved sealing reliability.
In order to make the structure of the present invention more reasonable, preferably, the downstream valve seat assembly 5 of the present embodiment includes a stepped downstream valve seat 51, a second stepped groove is formed in a position, aligned with the stepped downstream valve seat 51, of an inner wall surface of the right valve body 3, an outer winding pad 52, a second disc spring 53 and an inner winding pad 54 are sequentially disposed between the second stepped groove and the stepped downstream valve seat 51 from left to right, a second closed spring cavity is formed among the stepped downstream valve seat 51, the right valve body 3, the outer winding pad 52 and the inner winding pad 54, the second disc spring 53 is located in the second closed spring cavity, and a left end of the stepped downstream valve seat 51 is tightly pressed and sealed with the ball 2.
An upstream round and square transition flow passage 11 is arranged in the left valve body 1, the left port of the upstream round and square transition flow passage 11 is a round hole, and the right port of the upstream round and square transition flow passage 11 is a square hole; the stepped upstream valve seat 41 is provided with a first square through hole 411 aligned with the upstream round-square transition flow passage, and the ball 2 is provided with a second square through hole 21 aligned with the first square through hole.
A second conical through hole 31 is formed in the right valve seat 3, and the diameter of a left port of the second conical through hole 31 is smaller than that of a right port; the stepped downstream valve seat 51 is provided with a third through-hole 511 aligned with the second through-hole.
The axial center lines of the upstream round-square transition flow passage 11, the first square through hole 411, the second square through hole 21, the second conical through hole 31 and the third square through hole 511 are coincident with each other.
Be provided with metal gasket 6 between left side valve body 1 and the right valve body 3, and left side valve body 1 and right valve body 3 pass through bolt locking and fix, just 3 upper ends of right valve body aim at 2 positions on the spheroid and set up the vertical valve rod through-hole that is provided with, wear to be equipped with a valve rod 7 in the valve rod through-hole, 7 lower extremes of valve rod and 2 upper ends fixed connection of spheroid, be provided with on the internal face of valve rod through-hole and prevent blowing off spacing lug, prevent blowing off spacing lug upper end and be provided with filler 8, 7 pot head on the valve rod is equipped with valve gap 9, 9 lower extremes of valve gap compress tightly 8 upper ends of filler, just wear to be equipped with a plurality of connecting bolt 10 on the valve gap 9, and valve gap 9 passes through connecting bolt 10 to be fixed in 3 upper ends of right valve body.
Preferably, the lower end of the valve rod 7 is fixed with the upper end of the ball 2 by welding or bolt connection.
In practical application, a first closed spring cavity is formed among the stepped upstream valve seat, the left valve body, the first graphite sealing ring and the woven packing group of the upstream valve seat assembly, the split ring, the first disc spring and the packing press ring are all arranged in the first closed spring cavity, a second closed spring cavity is formed among the stepped downstream valve seat, the right valve body, the outer side winding pad and the inner side winding pad of the downstream valve seat assembly, the second disc spring is located in the second closed spring cavity, impurities, dust and the like are effectively prevented from entering the spring cavity to be blocked, spring elasticity failure cannot be caused, the work is stable, and the sealing performance of each valve seat is good; an upstream round and square transition flow passage is arranged in the upper left valve body, a first square through hole is formed in the position, aligned with the upstream round and square transition flow passage, of the stepped upstream valve seat, a second square through hole is formed in the position, aligned with the first square through hole, of the ball body, the cross-sectional area is enlarged under the same opening degree, the problem that the service life of the valve is influenced due to destructive washing caused by overhigh flow speed caused by small cross-sectional area when the existing ball valve is in small opening degree is solved, and the ball valve is long in service life and good in practicability.
The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.
Claims (6)
1. The utility model provides a hydrophobic ball valve in high temperature high pressure power station, includes left valve body (1), spheroid (2) and right valve body (3), the setting can be dismantled in left side valve body (1) and right valve body (3), just spheroid (2) are located between left valve body (1) and right valve body (3), its characterized in that: an upstream valve seat assembly (4) is arranged between the ball body (2) and the left valve body (1), and a downstream valve seat assembly (5) is arranged between the ball body (2) and the right valve body (3); the upstream valve seat assembly (4) comprises a stepped upstream valve seat (41), a first stepped groove is formed in the position, aligned with the stepped upstream valve seat (41), of the inner wall surface of the left valve body (1), a first graphite sealing ring (42), a split ring (43), a first disc spring (44), a packing press ring (45) and a braided packing set (46) are sequentially arranged between the first step groove and the stepped upstream valve seat (41) from left to right, a first closed spring cavity is formed among the stepped upstream valve seat (41), the left valve body (1), the first graphite sealing ring (42) and the braided packing group (46), the split ring (43), the first disc spring (44) and the packing press ring (45) are all arranged in the first closed spring cavity, the braided packing set (46) is composed of double-circle braided graphite ropes, and the right end of the stepped upstream valve seat (41) is tightly pressed and sealed with the ball body (2).
2. The high-temperature high-pressure station drain ball valve according to claim 1, characterized in that: the downstream valve seat assembly (5) comprises a stepped downstream valve seat (51), the inner wall surface of the right valve body (3) is aligned to the stepped downstream valve seat (51) and is provided with a second step groove, an outer winding pad (52), a second disc spring (53) and an inner winding pad (54) are sequentially arranged between the second step groove and the stepped downstream valve seat (51) from left to right, a second closed spring cavity is formed between the stepped downstream valve seat (51), the right valve body (3), the outer winding pad (52) and the inner winding pad (54), the second disc spring (53) is located in the second closed spring cavity, and the left end of the stepped downstream valve seat (51) is tightly pressed and sealed with the ball body (2).
3. The high-temperature high-pressure station drain ball valve according to claim 2, characterized in that: an upstream round and square transition flow channel (11) is arranged in the left valve body (1), the left end opening of the upstream round and square transition flow channel (11) is a round hole, and the right end opening of the upstream round and square transition flow channel (11) is a square hole; the stepped upstream valve seat (41) is provided with a first square through hole (411) aligned with the upstream round-square transition flow passage, and the ball body (2) is provided with a second square through hole (21) aligned with the first square through hole.
4. The high-temperature high-pressure station drain ball valve according to claim 3, characterized in that: a second conical through hole (31) is formed in the right valve seat (3), and the diameter of a left port of the second conical through hole (31) is smaller than that of a right port; and a third square through hole (511) is formed in the position, aligned with the second conical through hole, of the stepped downstream valve seat (51).
5. The high-temperature high-pressure station drain ball valve according to claim 4, characterized in that: the axial center lines of the upstream round-square transition flow channel (11), the first square through hole (411), the second square through hole (21), the second conical through hole (31) and the third square through hole (511) are overlapped with each other.
6. The high-temperature high-pressure station drain ball valve according to claim 5, characterized in that: be provided with metal packing ring (6) between left side valve body (1) and right valve body (2), and left side valve body (1) and right valve body (3) through bolt locking fixed, just right side valve body (3) upper end is aimed at spheroid (2) position and is set up vertical valve rod through-hole that is provided with, wear to be equipped with a valve rod (7) in the valve rod through-hole, valve rod (7) lower extreme and spheroid (2) upper end fixed connection, be provided with on the internal face of valve rod through-hole and prevent blowing off spacing lug, prevent blowing off spacing lug upper end and be provided with filler (8), the pot head is equipped with valve gap (9) on valve rod (7), valve gap (9) lower extreme compresses tightly filler (8) upper end, just wear to be equipped with a plurality of connecting bolt (10) on valve gap (9), and valve gap (9) are fixed in right valve body (3) upper end through connecting bolt (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111174596.3A CN113864478A (en) | 2021-10-09 | 2021-10-09 | Drainage ball valve for high-temperature and high-pressure power station |
| ZA2022/02203A ZA202202203B (en) | 2021-10-09 | 2022-02-22 | Drain ball valve for high temperature and high pressure power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111174596.3A CN113864478A (en) | 2021-10-09 | 2021-10-09 | Drainage ball valve for high-temperature and high-pressure power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113864478A true CN113864478A (en) | 2021-12-31 |
Family
ID=79002032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111174596.3A Pending CN113864478A (en) | 2021-10-09 | 2021-10-09 | Drainage ball valve for high-temperature and high-pressure power station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113864478A (en) |
| ZA (1) | ZA202202203B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205504057U (en) * | 2016-03-31 | 2016-08-24 | 哈尔滨松林电站设备有限公司 | Pressure relief valve |
| CN206159529U (en) * | 2016-08-22 | 2017-05-10 | 江苏神通阀门股份有限公司 | Seal structure of low temperature upper assembling type ball valve |
| CN109611575A (en) * | 2019-01-31 | 2019-04-12 | 成都斯杰化工机械有限公司 | A kind of wear-resisting accurate adjustment ball valve of square hole runner |
| CN110285231A (en) * | 2019-07-23 | 2019-09-27 | 欧维克集团有限公司 | A kind of new energy industry high temperature and pressure hard seal ball valve |
| CN209469823U (en) * | 2019-02-27 | 2019-10-08 | 温州捷凯智能设备科技有限公司 | A kind of efficient hard seal ball valve |
-
2021
- 2021-10-09 CN CN202111174596.3A patent/CN113864478A/en active Pending
-
2022
- 2022-02-22 ZA ZA2022/02203A patent/ZA202202203B/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205504057U (en) * | 2016-03-31 | 2016-08-24 | 哈尔滨松林电站设备有限公司 | Pressure relief valve |
| CN206159529U (en) * | 2016-08-22 | 2017-05-10 | 江苏神通阀门股份有限公司 | Seal structure of low temperature upper assembling type ball valve |
| CN109611575A (en) * | 2019-01-31 | 2019-04-12 | 成都斯杰化工机械有限公司 | A kind of wear-resisting accurate adjustment ball valve of square hole runner |
| CN209469823U (en) * | 2019-02-27 | 2019-10-08 | 温州捷凯智能设备科技有限公司 | A kind of efficient hard seal ball valve |
| CN110285231A (en) * | 2019-07-23 | 2019-09-27 | 欧维克集团有限公司 | A kind of new energy industry high temperature and pressure hard seal ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202202203B (en) | 2022-06-29 |
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