CN212028548U - Valve clack and antiscour stop valve - Google Patents
Valve clack and antiscour stop valve Download PDFInfo
- Publication number
- CN212028548U CN212028548U CN202020019589.0U CN202020019589U CN212028548U CN 212028548 U CN212028548 U CN 212028548U CN 202020019589 U CN202020019589 U CN 202020019589U CN 212028548 U CN212028548 U CN 212028548U
- Authority
- CN
- China
- Prior art keywords
- valve
- lugs
- cover
- valve rod
- wall
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a valve clack and antiscour stop valve relates to valve technical field, and this valve clack includes: the valve comprises a cylindrical body, a valve rod and a plurality of first lugs, wherein a pipe threaded hole in threaded connection with the valve rod is formed in the cylindrical body, a plurality of first lugs are uniformly arranged at intervals along the circumferential direction at the edge of the outer wall of the body close to one end face, a plurality of second lugs are uniformly arranged at intervals along the circumferential direction at the middle part of the outer wall of the body, a plurality of third lugs are uniformly arranged at intervals along the circumferential direction at the edge of the outer wall of the body close to the other end face, the first lugs and the second lugs are arranged in a staggered; and the sealing ring is arranged on the end face of the body, which is not provided with the pipe threaded hole. The utility model provides a valve clack, body lateral wall form unique scraper structure through first lug, second lug and third lug, and form the slot between the adjacent lug to the lug combines together with the slot as scraping the tooth, is convenient for directly follow the slot discharge with the residue of scraping, avoids the residue to block up the valve body, influences the normal of valve clack and opens and close.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to valve clack and antiscour stop valve.
Background
The stop valve is one of the most widely used valves, and is durable due to small friction force between sealing surfaces in the opening and closing process and small opening height, so that the stop valve is suitable for medium and low pressure and high pressure.
At present, in a boiler and a steam turbine system of a power plant, the working environment of a valve is poor, particularly the working condition of a high-temperature and high-pressure medium, on one hand, the valve clack is seriously eroded and damaged because the medium with high flow rate directly erodes the valve clack; on the other hand, the high-temperature and high-pressure medium contains a large amount of solid particles, the valve body middle cavity is easily blocked and the valve clack is blocked under high flow velocity, the valve is difficult to open and close, the service life and the sealing effect of the valve are reduced,
SUMMERY OF THE UTILITY MODEL
One of the defect to existence among the prior art, the utility model aims to provide a valve clack and antiscour stop valve can avoid the residue to block up the valve body, influences the normal of valve clack and opens and close.
The utility model discloses the first aspect provides a valve clack, it includes:
the valve comprises a cylindrical body, a valve rod and a valve rod, wherein the cylindrical body is provided with a pipe threaded hole in threaded connection with the valve rod, a plurality of first lugs are uniformly arranged at intervals along the circumferential direction at the edge of the outer wall of the body close to one end face, a plurality of second lugs are uniformly arranged at intervals along the circumferential direction at the middle part of the outer wall of the body, a plurality of third lugs are uniformly arranged at intervals along the circumferential direction at the edge of the outer wall of the body close to the other end face, the first lugs and the second lugs are arranged in a staggered mode, and the first lugs and;
and the sealing ring is arranged on the end face of the body, which is not provided with the pipe threaded hole.
Based on the first aspect, in a possible embodiment, the end surface of the body provided with the pipe threaded hole is a first end surface, the first protrusions are arranged close to the first end surface, a distance between every two adjacent first protrusions is smaller than or equal to a length of the second protrusions along the circumferential direction of the outer wall, and a distance between every two adjacent second protrusions is smaller than or equal to a length of the third protrusions along the circumferential direction of the outer wall.
In a possible embodiment, the end surface of the body not provided with the threaded hole of the pipe is provided with a ring of sealing grooves for mounting the sealing ring.
The utility model discloses the second aspect provides an antiscour stop valve with above-mentioned valve clack, and it includes:
the valve body is internally provided with an inlet channel, an outlet channel and a cavity communicated with the inlet channel and the outlet channel, the valve body is connected with a valve cover, and the valve cover is buckled above the cavity;
the valve seat is arranged in the cavity, a flushing-resistant sleeve is arranged above the valve seat and pressed below the valve cover, and a water through hole communicated with the inlet channel is formed in the side wall of the lower part of the flushing-resistant sleeve;
the valve rod, it wears to locate above-mentioned valve gap, and above-mentioned valve clack is connected to above-mentioned valve rod one end, and the hand wheel is connected to the other end, and above-mentioned valve clack slides and pegs graft in above-mentioned resistant cover that erodees.
In a possible embodiment, based on the second aspect, the valve cover comprises:
the cover body is sleeved on the valve rod, part of the cover body is arranged in the valve body, and a metal sealing ring is arranged between the cover body and the valve body;
a support cover which is arranged between the valve body and the cover body and is pressed on the metal sealing ring;
the supporting plate is sleeved on the part of the cover body which is not arranged on the valve body, and the supporting plate is tightly pressed against the supporting cover through a mandril screw.
Based on the second aspect, in a possible embodiment, the supporting cover is provided with a wear-resistant gasket at a position corresponding to the ejector bolt.
Based on the second aspect, in a possible embodiment, a packing is disposed between the valve rod and the cover, a packing pressing sleeve disposed above the packing in a pressing manner and a packing pressing plate disposed above the packing pressing sleeve are further sleeved on the valve rod, and the packing pressing plate is fixed to the support plate through a stud.
According to the second aspect, in a possible embodiment, the handwheel is rotatably connected with the valve rod through a valve rod nut, and the internal thread of the valve rod nut is in threaded connection with the external thread of the valve rod;
the part of the valve rod nut below the hand wheel is sleeved in the support through a thrust bearing, and the support is fixed above the valve body through a support column.
Based on the second aspect, in a possible embodiment, the impact-resistant sleeve is in clearance fit with the inner wall of the cavity, and is pressed below the valve cover through a pressing plate.
Based on the second aspect, in a possible embodiment, the part of the valve rod between the bracket and the valve cover is connected with two anti-rotation clamping plates, one ends of the two anti-rotation clamping plates are symmetrically arranged on two sides of the valve rod, the other ends of the two anti-rotation clamping plates are symmetrically arranged on two sides of a support column, and the two anti-rotation clamping plates are fixed through bolts.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model provides a valve clack, body lateral wall form unique scraper structure through first lug, second lug and third lug, and form the slot between the adjacent lug to the lug combines together with the slot as scraping the tooth, is convenient for directly follow the slot discharge with the residue of scraping, avoids the residue to block up the valve body, influences the normal of valve clack and opens and close.
(2) The anti-scouring stop valve of the utility model is provided with the anti-scouring sleeve on the valve seat, and the anti-scouring sleeve can reduce the scouring of high flow velocity medium to the front side of the valve clack, thus prolonging the service life of the valve clack; meanwhile, by utilizing the unique scraper structure on the side wall of the valve clack, in the process that the valve rod drives the valve clack to move up and down, the inner wall of the scouring-resistant sleeve is in plane contact with the convex block, a medium attached to the inner wall of the scouring-resistant sleeve is scraped, and the scraped residue can be discharged along the groove, so that the purpose of removing the slag is achieved.
(3) The utility model provides an antiscour stop valve, the medium pressure when flowing through is high more, and the effort that upwards promotes the lid is also big more, and then makes the metal seal ring press more tightly more, realizes under the effect of high-pressure medium, strengthens the effect of sealed effect between lid and the valve body.
(4) The utility model provides an antiscour stop valve sets up in the both sides of valve rod through the one end symmetry with two anti-rotation splint, and two other end symmetries that prevent the rotation splint set up in the both sides of a support column to it is fixed with two anti-rotation splint through the bolt, and rotate with valve rod nut's rotation in order to prevent that the valve rod from following.
Drawings
Fig. 1 is a schematic structural diagram of a valve flap in an embodiment of the present invention;
FIG. 2 is a schematic view taken along line A-A in FIG. 1;
FIG. 3 is a schematic view taken along line B-B in FIG. 1;
FIG. 4 is a schematic structural diagram of an anti-scour stop valve according to an embodiment of the present invention;
FIG. 5 is an enlarged view of C in FIG. 4;
fig. 6 is a schematic structural view of the anti-scouring sleeve in the embodiment of the present invention.
Reference numerals:
1-a valve flap, 10-a body, 11-a first bump, 12-a second bump, 13-a third bump, 14-a pipe threaded hole, 15-a sealing ring;
2-valve rod, 21-anti-rotation clamp plate, 22-bolt;
3-valve body, 31-inlet channel, 32-outlet channel, 33-cavity;
4-valve cover, 41-cover body, 411-metal sealing ring, 42-supporting cover, 421-wear-resistant gasket, 43-supporting plate, 431-ejector rod screw, 44-filler, 45-filler pressing sleeve and 46-filler pressing plate;
5-valve seat, 51-sealing gasket;
6-impact-resistant sleeve, 61-water through hole and 62 pressing plate;
7-a hand wheel;
8-valve rod nut, 81-thrust bearing, 82-bearing gland;
9-bracket, 91-support column.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a valve flap, which includes a cylindrical body 10 and a sealing ring 15.
Above-mentioned body 10 offers the pipe thread hole 14 with valve rod 2 spiro union, the edge that body 10 outer wall is close to a terminal surface sets up a plurality of first lugs 11 along the even interval of circumference, body 10 outer wall middle part sets up a plurality of second lugs 12 along the even interval of circumference, edge that body 10 outer wall is close to another terminal surface sets up a plurality of third lugs 13 along the even interval of circumference, first lug 11 sets up with second lug 12 is crisscross, first lug 11 corresponds the setting with third lug 13.
The seal ring 15 is provided on an end surface of the body 10 not provided with the pipe screw hole 14. The sealing ring 15 can ensure the sealing performance between the valve clack 1 and the valve seat 5.
After the surface of the valve clack 1 is machined by a milling machine, Ni60 is sprayed at supersonic speed, so that the hardness HRC of the outer surface of the valve clack 1 is more than or equal to 58, and the valve clack is extremely wear-resistant and scratch-resistant.
In this embodiment, the end surface of the body 10 provided with the pipe threaded hole 14 is a first end surface, and the other end surface of the body 10 is a sealing surface. The first projection 11 is arranged adjacent to the first end face and the third projection 13 is arranged adjacent to the sealing face. The distance between the adjacent first lugs 11 is less than or equal to the length of the second lugs 12 along the circumferential direction of the outer wall, and the distance between the adjacent second lugs 12 is less than or equal to the length of the third lugs 13 along the circumferential direction of the outer wall.
Referring to fig. 2 and 3, optionally, the first projection 11, the second projection 12 and the third projection 13 are the same in size, and there are 6 projections. The distance between the adjacent first lugs 11 is the same as the length of the second lugs 12 along the circumferential direction of the outer wall of the body, and similarly, the distance between the adjacent second lugs 12 is the same as the length of the third lugs 13 along the circumferential direction of the outer wall.
Furthermore, the end surface of the body 10 not provided with the pipe threaded hole 14 is provided with a circle of sealing groove, and the sealing ring 15 is fixed in the sealing groove.
The valve clack lateral wall of this embodiment forms unique scraper structure through first lug 11, second lug 12 and third lug 13, and forms the slot between the adjacent lug to the lug combines together with the slot as scraping the tooth, is convenient for directly discharge along the slot with the residue of scraping, avoids the residue to block up the valve body, influences the normal of valve clack and opens and close.
Referring to fig. 4, the embodiment also provides an anti-scouring stop valve, which comprises a valve body 3, a valve seat 5, a valve rod 2 and the valve clack 1.
An inlet channel 31, an outlet channel 32 and a cavity 33 are arranged in the valve body 3, and the cavity 33 is arranged between the inlet channel 31 and the outlet channel 32 and is respectively communicated with the inlet channel 31 and the outlet channel 32. The valve body 3 is connected with a valve cover 4, and the valve cover 4 is buckled above the cavity 33.
The valve seat 5 is arranged in the cavity 33, and the valve seat 5 and the valve body 3 are sealed through a sealing gasket 51. The upper part of the valve seat 5 is provided with a scouring-resistant sleeve 6, the scouring-resistant sleeve 6 is pressed below the valve cover 4, and the side wall of the lower part of the scouring-resistant sleeve 6 is provided with a water passing hole 61 communicated with the inlet channel 31. Wherein, the erosion-resistant sleeve 6 is made of tungsten carbide material, and the hardness of the material reaches more than HRA 90.
Wherein, valve rod 2 is equipped with the pipe thread with 14 looks adaptations of pipe thread hole, and valve rod 2 and valve clack 1 threaded connection, and through spot welding locking.
In the embodiment, the valve clack 1 and the valve seat 5 are made of Steyr alloy through argon arc welding and surfacing, the thickness of the valve clack after surfacing is larger than or equal to 3mm, the hardness HRC is larger than or equal to 40, the valve clack is high in hardness, extremely resistant to scouring, and suitable for the working condition of high-pressure media.
According to the anti-scouring stop valve, the valve seat is provided with the anti-scouring sleeve, so that the front scouring of high-flow-velocity media to the valve clack can be reduced by using the anti-scouring sleeve, and the service life of the valve clack is prolonged; in addition, by utilizing the unique scraper structure on the side wall of the valve clack, in the process that the valve rod drives the valve clack to move up and down, the convex block is in plane contact with the inner wall of the scouring-resistant sleeve, a medium attached to the inner wall of the scouring-resistant sleeve is scraped, and meanwhile, the scraped residue can be discharged out of a downstream pipeline of a flow channel along a groove, so that the purpose of removing slag is achieved.
Referring to fig. 5, in the present embodiment, the valve cover 4 includes a cover body 41, a support cover 42, and a support plate 43.
The cover 41 is disposed on the valve rod 2 and partially disposed in the valve body 3, and a metal sealing ring 411 is disposed between the cover 41 and the valve body 3. Specifically, the outer side wall of the cover body 41 placed inside the valve body 3 is provided with a first annular step surface on which the metal seal ring 411 is provided.
The metal sealing ring 411 is made of austenitic stainless steel 304, and is corrosion-resistant, high-temperature-resistant and large in elastic deformation. The metal sealing ring 411 provides a pretightening force to seal the cover body 41 and the valve body 3.
The support cover 42 is disposed between the valve body 3 and the cover body 41 and is pressed above the metal seal ring 411. Alternatively, the support cap 42 is threadedly coupled to the valve body 3. A backing ring is provided between the support cover 42 and the metal sealing ring 411.
The supporting plate 43 is sleeved on the cover 41 not disposed on the valve body 3, and the supporting plate 43 tightly pushes the supporting cover 42 through the push rod screw 431. When the medium enters the cavity 33 of the valve body 3, the mandril screw 431 is rotated downwards, so that the cover body 41 and the support cover 42 move upwards, the metal sealing ring 411 is further compressed, and the sealing performance between the valve body 3 and the cover body 41 is enhanced.
Further, the supporting cover 42 is provided with a wear-resistant pad 421 at a position corresponding to the jack screw 431, so as to reduce the wear of the supporting cover 42 caused by the jack screw 431.
In this embodiment, the higher the pressure of the medium flowing through, the larger the acting force pushing the cover 41 upward, and further the metal sealing ring 411 is pressed more and more tightly, so as to realize the function of enhancing the sealing effect between the cover and the valve body under the action of the high-pressure medium.
In this embodiment, a packing 44 is disposed between the valve rod 2 and the cover 41, a packing pressing sleeve 45 disposed above the packing 44 and a packing pressing plate 46 disposed above the packing pressing sleeve 45 are further sleeved on the valve rod 2, and the packing pressing plate 46 is fixed to the supporting plate 43 through a stud and a hexagon nut so as to press the packing 44. A packing pad is also arranged between the valve rod 2 and the cover body 41 and is positioned below the packing 44.
In this embodiment, the handwheel 7 is rotatably connected with the valve rod 2 through the valve rod nut 8, and the internal thread of the valve rod nut 8 is in threaded connection with the external thread of the valve rod 2. Wherein, the valve rod nut 8 and the valve rod 2 adopt trapezoidal left-hand thread connection.
The part of the valve rod nut 8, which is positioned below the hand wheel 7, is sleeved in the support 9 through the thrust bearing 81, and the support 9 is fixed above the valve body 3 through the support column 91. Support 9 and support column 91 are through forging the shaping, and intensity is high, and mechanical properties is good.
Optionally, the hand wheel 7 and the valve rod nut 8 are connected through a hexagonal groove, a hexagonal thin nut is further arranged at the end part, far away from the support 9, of the valve rod nut 8, and the hexagonal thin nut and the valve rod nut 8 are in threaded connection, so that the hand wheel 7 is pressed, and the hand wheel 7 is prevented from falling off.
Further, a bearing gland 82 is further arranged above the thrust bearing 81, and the bearing gland 82 is arranged between the bracket 9 and the valve rod nut 8. Wherein, the bearing gland 82 is connected with the bracket 9 by screw thread and is fixed by a set screw to prevent the screw thread from loosening.
Optionally, an oil cup is further arranged on the side wall of the bracket 9, grease can be injected onto the thrust bearing 81 through the oil cup, and the thrust bearing 81 is prevented from being stuck and failing.
In the embodiment, when the hand wheel 7 is rotated clockwise, the hand wheel 7 drives the valve rod nut 8 to rotate, so that the valve rod 2 moves downwards, and the valve clack 1 is driven to move downwards to close the valve; when the hand wheel 7 is rotated anticlockwise, the hand wheel 7 drives the valve rod nut 8 to rotate, so that the valve rod 2 moves upwards, the valve clack 1 is further driven to move upwards, and the valve is opened.
Referring to fig. 6, further, the erosion-resistant sleeve 6 is in clearance fit with the inner wall of the cavity 33 and is pressed below the valve cover 4 by the pressing plate 62. Wherein, the pressure strip 62 is connected with the valve body 3 by screw thread, which is convenient for installation and disassembly.
In this embodiment, the part of the valve rod 2 between the support 9 and the valve cover 4 is connected with two anti-rotation clamping plates 21, one ends of the two anti-rotation clamping plates 21 are symmetrically arranged on two sides of the valve rod 2, the other ends of the two anti-rotation clamping plates 21 are symmetrically arranged on two sides of a support column 91, and the two anti-rotation clamping plates 21 are fixed through bolts 22. The stem 2 is prevented from rotating with the rotation of the stem nut 8 by the rotation preventing clamp plate 21.
This embodiment adopts the structure of height into low play, prevents on the one hand that the medium from directly scouring away the sealed face of valve clack 1, and on the other hand, when closing the valve, through the effect of medium pressure, makes the unbalanced force that valve clack 1 received reduce, and the switching torque is little, and it is lighter to close the valve. Since the torque pressure required for the valve stem 1 is small when opening and closing the valve, the diameter of the valve stem 2 can be reduced, saving manufacturing costs.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (10)
1. A valve flap, characterized in that it comprises:
the valve rod comprises a cylindrical body (10) provided with a pipe threaded hole (14) in threaded connection with the valve rod (2), a plurality of first lugs (11) are uniformly arranged at the edge of the outer wall of the body (10) close to one end face at intervals along the circumferential direction, a plurality of second lugs (12) are uniformly arranged at the middle part of the outer wall of the body (10) at intervals along the circumferential direction, a plurality of third lugs (13) are uniformly arranged at the edge of the outer wall of the body (10) close to the other end face at intervals along the circumferential direction, the first lugs (11) and the second lugs (12) are arranged in a staggered mode, and the first lugs (11) and the third lugs (13) are arranged correspondingly;
and the sealing ring (15) is arranged on the end face of the body (10) where the pipe threaded hole (14) is not formed.
2. The valve flap of claim 1, wherein: the end face of the body (10) provided with the pipe threaded hole (14) is a first end face, the first lug (11) is close to the first end face, the distance between every two adjacent first lugs (11) is smaller than or equal to the length of the second lug (12) in the circumferential direction of the outer wall, and the distance between every two adjacent second lugs (12) is smaller than or equal to the length of the third lug (13) in the circumferential direction of the outer wall.
3. The valve flap of claim 1, wherein: the end face of the body (10) which is not provided with the pipe threaded hole (14) is provided with a circle of sealing groove for installing the sealing ring (15).
4. An anti-flush shut-off valve having the valve flap of claim 1, comprising:
the valve body (3) is internally provided with an inlet channel (31), an outlet channel (32) and a cavity (33) communicated with the inlet channel (31) and the outlet channel (32), the valve body (3) is connected with a valve cover (4), and the valve cover (4) is buckled above the cavity (33);
the valve seat (5) is arranged in the cavity (33), a flushing-resistant sleeve (6) is arranged above the valve seat (5), the flushing-resistant sleeve (6) is arranged below the valve cover (4) in a pressing mode, and a water through hole (61) communicated with the inlet channel (31) is formed in the side wall of the lower portion of the flushing-resistant sleeve (6);
the valve rod (2) penetrates through the valve cover (4), one end of the valve rod (2) is connected with the valve clack (1), the other end of the valve rod is connected with the hand wheel (7), and the valve clack (1) is inserted into the impact-resistant brush sleeve (6) in a sliding mode.
5. Anti-flush shut-off valve according to claim 4, characterized in that the valve cover (4) comprises:
the cover body (41) is sleeved on the valve rod (2), part of the cover body is arranged in the valve body (3), and a metal sealing ring (411) is arranged between the cover body (41) and the valve body (3);
a support cover (42) which is provided between the valve body (3) and the cover body (41) and is pressed against the metal seal ring (411);
and the supporting plate (43) is sleeved on the part, which is not arranged on the valve body (3), of the cover body (41), and the supporting plate (43) tightly pushes the supporting cover (42) through a push rod screw (431).
6. The anti-flush shut-off valve of claim 5, wherein: and a wear-resistant gasket (421) is arranged at the position of the supporting cover (42) corresponding to the mandril screw (431).
7. The anti-flush shut-off valve of claim 5, wherein: the packing pressing device is characterized in that a packing (44) is arranged between the valve rod (2) and the cover body (41), a packing pressing sleeve (45) which is pressed above the packing (44) and a packing pressing plate (46) which is pressed above the packing pressing sleeve (45) are sleeved on the valve rod (2), and the packing pressing plate (46) is fixed on the supporting plate (43) through a double-end stud.
8. The anti-flush shut-off valve of claim 5, wherein: the hand wheel (7) is rotatably connected with the valve rod (2) through a valve rod nut (8), and the internal thread of the valve rod nut (8) is in threaded connection with the external thread of the valve rod (2);
the valve rod nut (8) is positioned below the hand wheel (7) and sleeved in the support (9) through a thrust bearing (81), and the support (9) is fixed above the valve body (3) through a support column (91).
9. The anti-flush shut-off valve of claim 4, wherein: the scouring-resistant sleeve (6) is in clearance fit with the inner wall of the cavity (33) and is pressed below the valve cover (4) through a pressing plate (62).
10. The anti-flush shut-off valve of claim 8, wherein: valve rod (2) are located part between support (9) and valve gap (4) is connected with two and prevents changeing splint (21), two the one end symmetry of preventing changeing splint (21) set up in valve rod (2) both sides, two the other end symmetry of preventing changeing splint (21) sets up in a support column (91) both sides, and two it is fixed through bolt (22) to prevent changeing between splint (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020019589.0U CN212028548U (en) | 2020-01-06 | 2020-01-06 | Valve clack and antiscour stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020019589.0U CN212028548U (en) | 2020-01-06 | 2020-01-06 | Valve clack and antiscour stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212028548U true CN212028548U (en) | 2020-11-27 |
Family
ID=73486521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020019589.0U Active CN212028548U (en) | 2020-01-06 | 2020-01-06 | Valve clack and antiscour stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212028548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635973A (en) * | 2022-03-18 | 2022-06-17 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure valve seat-replaceable stop valve |
-
2020
- 2020-01-06 CN CN202020019589.0U patent/CN212028548U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635973A (en) * | 2022-03-18 | 2022-06-17 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure valve seat-replaceable stop valve |
| CN114635973B (en) * | 2022-03-18 | 2023-09-12 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure replaceable valve seat stop valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212028548U (en) | Valve clack and antiscour stop valve | |
| CN101929554B (en) | Improved flat gate valve | |
| CN104197028B (en) | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve | |
| CN212509581U (en) | High-temperature high-pressure stop valve based on labyrinth seal | |
| CN201386824Y (en) | High-pound-grade eccentric rotary wearproof ball valve | |
| CN113154077A (en) | Top-mounted type gas storage metal hard sealing ball valve capable of being maintained on line | |
| CN100470103C (en) | Forced sealing control valve | |
| CN2931964Y (en) | Gate valve | |
| CN207131902U (en) | Upper dress formula full-bore LNG soft seal zero leakage two-way valves | |
| CN214222036U (en) | Novel bidirectional flow rotary ball valve | |
| CN202220877U (en) | Metal hard seal high-pressure forged steel wear-resistant ball valve | |
| CN214197273U (en) | Erosion-resistant electric valve | |
| CN201096195Y (en) | Strong sealing control valve | |
| CN103603965A (en) | Up-mounted C-shaped ball valve | |
| CN209725332U (en) | A kind of cut-off two purpose valve | |
| CN203023507U (en) | Separating angle shutoff/throttling valve | |
| CN208074174U (en) | A kind of industrial pipeline valve | |
| CN201851692U (en) | Improved flat gate valve | |
| CN108869772A (en) | A kind of dedicated hard sealing lock hopper moushroom valve of coal chemical industry | |
| CN210423941U (en) | Special wear-resisting disk valve of polycrystalline silicon | |
| CN216279440U (en) | High-performance fireproof hard sealing butterfly valve | |
| CN201377623Y (en) | Tee joint reversing valve | |
| CN113915368A (en) | Novel ultra-high temperature fixed ball valve | |
| CN204592303U (en) | A kind of abrasion-resistant angle stop valve | |
| CN109404201B (en) | Water turbine for reservoir |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |