CN220523319U - Bypass cut-off valve - Google Patents
Bypass cut-off valve Download PDFInfo
- Publication number
- CN220523319U CN220523319U CN202321985346.2U CN202321985346U CN220523319U CN 220523319 U CN220523319 U CN 220523319U CN 202321985346 U CN202321985346 U CN 202321985346U CN 220523319 U CN220523319 U CN 220523319U
- Authority
- CN
- China
- Prior art keywords
- bypass
- valve
- cut
- valve cover
- bypass cut
- 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
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000002349 favourable effect Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
A bypass cut-off valve relates to the technical field of braking devices, and comprises: the section of the bypass cut-off valve body is in a convex shape; the bypass cut-off valve cover is assembled at the top of the bypass cut-off valve body, the size of the bypass cut-off valve cover is the same as that of the top of the bypass cut-off valve body, and the bypass cut-off valve cover covers the top of the bypass cut-off valve body; the connecting rod is assembled at the bottom of the bypass cutting-off valve cover, the connecting rod is fixedly connected to the bottom of the bypass cutting-off valve cover through welding, and the connecting rod can stretch out and draw back; the spring is assembled at the bottom of the bypass cutting valve cover, the bypass cutting valve cover is fixedly connected with the spring, and the spring is positioned at the center of the bottom of the bypass cutting valve cover; the connecting plate is assembled at the bottom of the spring, the connecting plate is fixedly arranged at one side of the connecting rod, which is far away from the bypass cutting-off valve cover, and the connecting plate is fixedly arranged at one side of the spring, which is far away from the bypass cutting-off valve cover; the bypass cut-off valve has the advantages of being convenient to overhaul, improving the sealing performance and reducing the noise.
Description
Technical Field
The utility model relates to the technical field of braking devices, in particular to a bypass cut-off valve.
Background
The bypass valve is used as a high-temperature and high-pressure regulating valve commonly used in power plants, is very important equipment in a steam turbine system, and has very important effects of improving the starting performance of a unit and protecting the normal operation of the unit.
The valve seat of the existing low-pressure bypass valve adopts a dead bottom design, has poor overhauling and maintenance performance, can only adopt a field grinding repair process during each overhauling, and after multiple repairs, the abrasion-resistant and erosion-resistant sealing layer is gradually weak and even completely disappears, and finally leads to the sealing failure of the valve seat.
Disclosure of Invention
The utility model aims to provide a bypass cut-off valve which has the advantages of convenient maintenance, improved sealing performance and reduced noise, and solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the method is characterized in that: comprises a bypass cut-off valve body, a valve seat and a valve seat, wherein the section of the bypass cut-off valve body is in a convex shape;
the bypass cut-off valve cover is assembled at the top of the bypass cut-off valve body, the size of the bypass cut-off valve cover is the same as that of the top of the bypass cut-off valve body, and the bypass cut-off valve cover covers the top of the bypass cut-off valve body;
the connecting rod is assembled at the bottom of the bypass cutting-off valve cover, the bottom of the bypass cutting-off valve cover is fixedly connected with the connecting rod through welding, and the connecting rod can stretch out and draw back;
the spring is assembled at the bottom of the bypass cut-off valve cover, the bypass cut-off valve cover is fixedly connected with the spring, and the spring is positioned at the center of the bottom of the bypass cut-off valve cover;
the connecting plate is assembled at the bottom of the spring, the connecting plate is fixedly arranged at one side of the connecting rod, which is far away from the bypass cutting-off valve cover, and the connecting plate are fixedly arranged at one side of the spring, which is far away from the bypass cutting-off valve cover;
the valve seat is assembled at the bottom of the bypass cut-off valve body, the valve seat is embedded into the inner side of the bottom of the bypass cut-off valve body, the bypass cut-off valve body is movably connected with the valve seat, and a through hole is formed in the center of the valve seat; the cage sleeve is assembled inside the bypass cut-off valve body, and the cage sleeve seat is arranged above the valve seat;
the valve core is assembled in the cage, the valve core is movably mounted above the valve seat, the valve core is fixedly and detachably connected to the bottom of the connecting plate, and the valve core is of a cylindrical structure.
Preferably, a baffle is arranged at the bottom of the valve core, the baffle is in a ring shape, and the valve core and the baffle are integrally formed.
Preferably, the upper surface of the valve seat is provided with a groove, and the groove is annular.
Preferably, the connecting rods are three, and the three connecting rods are fixedly arranged along the center of the bypass cutting-off valve cover at equal intervals in a rotating way.
Preferably, the side view cross section of the cage is in two opposite S shapes, the S shape is composed of an L shape and a triangle, the triangle is close to the valve seat, the valve core is in clearance fit with the cage, and the side surface of the cage is provided with a passage through which gas or liquid flows.
Preferably, the bypass cut-off valve body, the bypass cut-off valve cover, the connecting plate, the valve seat and the baffle are circular in overlook, and the bypass cut-off valve body, the bypass cut-off valve cover, the connecting plate, the valve seat, the baffle and the cage sleeve are coaxially arranged.
Preferably, the connecting rod includes:
the outer tube is assembled at the bottom of the bypass cut-off valve cover, and the bypass cut-off valve cover is fixedly connected with the outer tube; a step portion fitted to an inner surface of the outer tube, the step portion being located inside a side of the outer tube close to the connection plate; the inner tube is assembled at the top of the connecting plate, the connecting plate is fixedly connected with the inner tube, one side of the inner tube, which is far away from the connecting plate, is sleeved in the outer tube, and the outer tube and the inner tube are in sliding telescopic fit along the axial direction;
the convex block is assembled on the outer surface of the inner tube, the convex block is positioned on one side of the inner tube away from the connecting plate, and the step part is matched with the convex block;
and an elastic member fitted between the outer tube and the inner tube, the elastic member and the inner surface of the cage being in elastic sliding contact, the elastic member always having a movement tendency biased toward the inner surface of the outer tube.
Compared with the prior art, the utility model has the following beneficial effects:
1. the bypass cut-off valve body and the valve seat are movably connected, so that the installation and the disassembly are facilitated, the maintenance is facilitated, the baffle plate is arranged at the bottom of the valve core, the sealing surface at the bottom of the valve core is further protected, the valve core and the baffle plate are integrally formed, the baffle plate installation deviation in the installation process is prevented, the baffle plate is arranged, the contact area of the sealing surface is increased, the sealing performance of the valve core and the valve seat is improved, and the internal leakage of the valve is prevented.
2. The utility model provides a bypass trip valve outer tube and interior tube cover are established, and outer tube internal surface sets up the order, and the interior tube surface sets up the lug, and order and lug cooperation, elastic component and cage internal surface elasticity sliding contact, elastic component have the motion trend of biasing towards the interior surface of outer tube all the time, are favorable to controlling the flexible of connecting rod, and the passageway that gas or liquid flowed through has been seted up to cage side surface, are favorable to reducing fluidic pressure, further reduce the impact of fluid to sealed face, and porous structure is favorable to the noise reduction, can block the foreign matter.
Drawings
FIG. 1 is a schematic view of an overall three-dimensional closure of a bypass shutoff of the present utility model;
FIG. 2 is an overall three-dimensional schematic of a bypass shutoff of the present utility model;
FIG. 3 is a schematic view of a bypass shutoff according to the present utility model;
FIG. 4 is a schematic diagram of a connecting rod structure of a bypass shutoff according to the present utility model.
The reference numerals in the drawings indicate: 1. a bypass shutoff valve body; 2. a bypass trip valve cover; 3. a connecting rod; 4. a spring; 5. a connecting plate; 6. a valve core; 7. a valve seat; 8. a baffle plate; 9. a groove; 10. a cage sleeve; 11. a through hole; 12. an outer tube; 13. an inner tube; 14. a step; 15. a bump; 16. an elastic member.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1:
referring to FIGS. 1 and 3, a bypass shutoff valve includes a bypass shutoff valve body 1 having a convex cross section; a bypass cut-off valve cover 2 assembled on the top of the bypass cut-off valve body 1, the bypass cut-off valve cover 2 and the top of the bypass cut-off valve body 1 having the same size, the bypass cut-off valve cover 2 covering the top of the bypass cut-off valve body 1; the connecting rod 3 is assembled at the bottom of the bypass cutting-off valve cover 2, the bottom of the bypass cutting-off valve cover 2 is fixedly connected with the connecting rod 3 through welding, and the connecting rod 3 can stretch out and draw back; the spring 4 is assembled at the bottom of the bypass cutting valve cover 2, the bypass cutting valve cover 2 is fixedly connected with the spring 4, and the spring 4 is positioned at the center of the bottom of the bypass cutting valve cover 2; the connecting plate 5 is assembled at the bottom of the spring 4, the connecting plate 5 is fixedly arranged on one side of the connecting rod 3 away from the bypass cut-off valve cover 2, and the connecting plate 5 is fixedly arranged on one side of the spring 4 away from the bypass cut-off valve cover 2; the valve seat 7 is assembled at the bottom of the bypass cut-off valve body 1, the valve seat 7 is embedded into the inner side of the bottom of the bypass cut-off valve body 1, the bypass cut-off valve body 1 is movably connected with the valve seat 7, and a through hole 11 is formed in the center of the valve seat 7; the cage 10 is assembled in the bypass cut-off valve body 1, and the cage 10 is arranged above the valve seat 7; the valve core 6 is assembled in the cage 10, the valve core 6 is movably installed above the valve seat 7, the valve core 6 is fixedly and detachably connected to the bottom of the connecting plate 5, and the valve core 6 is of a cylindrical structure. The bottom of the valve core 6 is provided with a baffle 8, the baffle 8 is in a ring shape, and the valve core 6 and the baffle 8 are integrally formed. The upper surface of the valve seat 7 is provided with a groove 9, and the groove 9 is in a ring shape. The bypass trip valve body 1 and disk seat 7 swing joint are favorable to the installation and dismantle, are favorable to the maintenance, and case 6 bottom sets up baffle 8, is favorable to further protecting the sealed face of case 6 bottom, case 6 and baffle 8 integrated into one piece are favorable to preventing baffle 8 installation deviation in the installation, set up baffle 8, are favorable to increasing the area of contact of sealed face, improve the leakproofness of case 6 and disk seat 7, prevent the valve internal leakage.
Example 2:
referring to fig. 2 and 4, in a bypass cut-off valve, three connecting rods 3 are provided, and the three connecting rods 3 are fixedly arranged along the center rotation and equidistant of a bypass cut-off valve cover 2. The side view cross section of the cage 10 is in two opposite S shapes, the S shape is composed of an L shape and a triangle, the triangle is close to the valve seat 7, the valve core 6 is in clearance fit with the cage 10, and a passage through which gas or liquid flows is formed in the side surface of the cage 10. The bypass cut-off valve body 1, the bypass cut-off valve cover 2, the connecting plate 5, the valve seat 7 and the baffle 8 are circular in plan view, and the bypass cut-off valve body 1, the bypass cut-off valve cover 2, the connecting plate 5, the valve seat 7, the baffle 8 and the cage 10 are coaxially arranged. The connecting rod 3 includes: an outer tube 12 fitted to the bottom of the bypass-cut valve cover 2, the bypass-cut valve cover 2 being fixedly connected to the outer tube 12; a step portion 14 fitted to the inner surface of the outer tube 12, the step portion 14 being located inside one side of the outer tube 12 close to the connection plate 5; the inner tube 13 is assembled at the top of the connecting plate 5, the connecting plate 5 is fixedly connected with the inner tube 13, one side, far away from the connecting plate 5, of the inner tube 13 is sleeved in the outer tube 12, and the outer tube 12 and the inner tube 13 are in sliding telescopic fit along the axial direction; a protruding block 15, which is assembled on the outer surface of the inner tube 13, the protruding block 15 is positioned on one side of the inner tube 13 away from the connecting plate 5, and the step 14 is matched with the protruding block 15; and an elastic member 16 fitted between the outer tube 12 and the inner tube 13, the elastic member 16 being in elastic sliding contact with the inner surface of the cage 10, the elastic member 16 always having a movement tendency biased toward the inner surface of the outer tube 12. The outer tube 12 and the inner tube 13 are sleeved, the step 14 is arranged on the inner surface of the outer tube 12, the convex block 15 is arranged on the outer surface of the inner tube 13, the step 14 is matched with the convex block 15, the elastic piece 16 is elastically in sliding contact with the inner surface of the cage sleeve 10, the elastic piece 16 always has a movement trend of biasing towards the inner surface of the outer tube 12, the expansion and contraction of the connecting rod 3 are controlled, a passage through which gas or liquid flows is formed in the side surface of the cage sleeve 10, the pressure of fluid is reduced, the impact of the fluid on a sealing surface is further reduced, noise is reduced due to the porous structure, and foreign matters can be blocked.
Working principle: according to the bypass cut-off valve, a bypass cut-off valve body 1 is arranged at a required position, the bypass cut-off valve body 1 and a valve seat 7 are fixed, a cage 10 is placed into the bypass cut-off valve body 1 from the upper side, a passage through which gas or liquid flows is formed in the side surface of the cage 10, the pressure of fluid is reduced, the impact of the fluid on a sealing surface is small, the porous structure is beneficial to noise reduction, foreign matters can be blocked, a bypass cut-off valve cover 2 and a connecting plate 5 are fixed through a connecting rod 3 and a spring 4, a valve core 6 and the connecting plate 5 are connected, the connecting plate 5 and the valve core 6 are placed in the cage 10 until the bypass cut-off valve cover 2 covers the top of the bypass cut-off valve body 1, an outer pipe 12 and an inner pipe 13 are sleeved, a step 14 is arranged on the inner surface of the outer pipe 12, a bump 15 is arranged on the outer surface of the inner pipe 13, the step 14 is matched with the bump 15, an elastic piece 16 is elastically in sliding contact with the inner surface of the cage 10, the elastic piece 16 always has a movement biased towards the inner surface of the outer pipe 12, the expansion trend of the connecting rod 3 is controlled, the expansion of the connecting rod 3 drives the valve core 6 to move up and down, the valve core 6 moves up and down, the valve core 7 is separated from the upper and down, or the valve seat is opened, and the valve is opened.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A bypass shutoff valve, characterized by: comprising the following steps:
a bypass shutoff valve body (1) with a convex section;
the bypass cut-off valve cover (2) is assembled on the top of the bypass cut-off valve body (1), the size of the bypass cut-off valve cover (2) is the same as that of the top of the bypass cut-off valve body (1), and the bypass cut-off valve cover (2) covers the top of the bypass cut-off valve body (1);
the connecting rod (3) is assembled at the bottom of the bypass cutting-off valve cover (2), the connecting rod (3) is fixedly connected to the bottom of the bypass cutting-off valve cover (2) through welding, and the connecting rod (3) can stretch out and draw back;
the spring (4) is assembled at the bottom of the bypass cutting valve cover (2), the bypass cutting valve cover (2) is fixedly connected with the spring (4), and the spring (4) is positioned at the center of the bottom of the bypass cutting valve cover (2);
the connecting plate (5) is assembled at the bottom of the spring (4), the connecting plate (5) is fixedly arranged on one side of the connecting rod (3) away from the bypass cutting-off valve cover (2), and the connecting plate (5) is fixedly arranged on one side of the spring (4) away from the bypass cutting-off valve cover (2);
the valve seat (7) is assembled at the bottom of the bypass cut-off valve body (1), the valve seat (7) is embedded into the inner side of the bottom of the bypass cut-off valve body (1), the bypass cut-off valve body (1) is movably connected with the valve seat (7), and a through hole (11) is formed in the center of the valve seat (7);
the cage sleeve (10) is assembled inside the bypass cut-off valve body (1), and the cage sleeve (10) is arranged above the valve seat (7);
the valve core (6) is assembled inside the cage sleeve (10), the valve core (6) is movably mounted above the valve seat (7), the valve core (6) is fixedly and detachably connected to the bottom of the connecting plate (5), and the valve core (6) is of a cylindrical structure.
2. A bypass shutoff as recited in claim 1, wherein: the bottom of the valve core (6) is provided with a baffle (8), the baffle (8) is in a circular ring shape, and the valve core (6) and the baffle (8) are integrally formed.
3. A bypass shutoff as recited in claim 1, wherein: the upper surface of the valve seat (7) is provided with a groove (9), and the groove (9) is in a circular ring shape.
4. A bypass shutoff as recited in claim 1, wherein: the three connecting rods (3) are arranged, and the three connecting rods (3) are fixedly arranged along the center of the bypass cutting-off valve cover (2) in a rotary equidistant mode.
5. A bypass shutoff as recited in claim 1, wherein: the side view section of the cage sleeve (10) is in two opposite S shapes, the S shape is composed of an L shape and a triangle, the triangle is close to the valve seat (7), the valve core (6) is in clearance fit with the cage sleeve (10), and a passage through which gas or liquid flows is formed in the side surface of the cage sleeve (10).
6. A bypass shutoff as recited in claim 1, wherein: the bypass cut-off valve comprises a bypass cut-off valve body (1), a bypass cut-off valve cover (2), a connecting plate (5), a valve seat (7) and a baffle (8), wherein the bypass cut-off valve body (1), the bypass cut-off valve cover (2), the connecting plate (5), the valve seat (7), the baffle (8) and a cage (10) are coaxially arranged.
7. A bypass shutoff as recited in claim 1, wherein: the connecting rod (3) comprises:
the outer tube (12) is assembled at the bottom of the bypass cut-off valve cover (2), and the bypass cut-off valve cover (2) is fixedly connected with the outer tube (12);
a step (14) fitted to the inner surface of the outer tube (12), the step (14) being located inside one side of the outer tube (12) close to the connection plate (5);
the inner tube (13) is assembled at the top of the connecting plate (5), the connecting plate (5) is fixedly connected with the inner tube (13), one side, far away from the connecting plate (5), of the inner tube (13) is sleeved in the outer tube (12), and the outer tube (12) and the inner tube (13) are in sliding telescopic fit along the axial direction;
a bump (15) which is assembled on the outer surface of the inner tube (13), wherein the bump (15) is positioned on one side of the inner tube (13) away from the connecting plate (5), and the step (14) is matched with the bump (15);
and an elastic member (16) fitted between the outer tube (12) and the inner tube (13), the elastic member (16) being in elastic sliding contact with the inner surface of the cage (10), the elastic member (16) always having a movement tendency biased toward the inner surface of the outer tube (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321985346.2U CN220523319U (en) | 2023-07-26 | 2023-07-26 | Bypass cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321985346.2U CN220523319U (en) | 2023-07-26 | 2023-07-26 | Bypass cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220523319U true CN220523319U (en) | 2024-02-23 |
Family
ID=89937989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321985346.2U Active CN220523319U (en) | 2023-07-26 | 2023-07-26 | Bypass cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220523319U (en) |
-
2023
- 2023-07-26 CN CN202321985346.2U patent/CN220523319U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102996852B (en) | Surge self-operated three-way valve | |
| CN116104950B (en) | Steam stop valve with combined valve clack | |
| CN102599822B (en) | Safety valve of coffee maker | |
| CN202674328U (en) | Bellows globe valve | |
| CN108662220B (en) | Safety valve with redundant back pressure balancing device | |
| CN111810664B (en) | Vacuum die-casting stop valve of hydraulic pump | |
| CN220523319U (en) | Bypass cut-off valve | |
| CN2416290Y (en) | Cone seal stop valve for liquid caustic soda | |
| CN215488342U (en) | Water hammer eliminating device of secondary water supply equipment | |
| CN211315121U (en) | Lifting check valve with auxiliary positioning mechanism | |
| CN211145368U (en) | Multiple corrugated pipe stop valve | |
| CN101338821A (en) | All-welded ball valve possessing novel style sealing structure | |
| CN210623581U (en) | Stop valve | |
| CN103363145B (en) | Hydropower station water inlet ball valve height hydraulic operation hard sealing structure | |
| CN220556058U (en) | Valve seat and ball valve | |
| CN208831784U (en) | A kind of two-seater three eccentricity V-type hard seal ball valve | |
| CN104455499A (en) | Combined sealing stop valve | |
| CN204284482U (en) | Combination seal stop valve | |
| CN201705960U (en) | Material angle valve with valve stem and valve core double-guide structures | |
| CN213839636U (en) | Tank bottom ball valve | |
| CN221221552U (en) | Butt-clamping check valve | |
| CN218207858U (en) | Butterfly valve with high sealing performance | |
| CN220488342U (en) | High-temperature high-pressure integrated hydrophobic ball valve | |
| CN218935450U (en) | High-tightness automobile integrated valve | |
| CN201090749Y (en) | Cylinder type straight travel range control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |