CN217559046U

CN217559046U - Stop valve

Info

Publication number: CN217559046U
Application number: CN202221268487.8U
Authority: CN
Inventors: 吴嘉俊; 刘利明; 刘强; 吴涛; 孟凡强; 王志钢; 孙少强; 吕瑞明; 贾爽; 刘春雷; 安冬; 刘钊
Original assignee: Tianjin Huanong Yangliuqing Thermoelectric Co Ltd
Current assignee: Tianjin Huanong Yangliuqing Thermoelectric Co Ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-11
Anticipated expiration: 2032-05-24

Abstract

The utility model provides a stop valve, including core and valve body, the core includes location portion, and core one end is connected with the valve rod, and the other end and the valve body of core are connected, and the valve body includes valve inner sleeve and case endotheca, and location portion and valve inner sleeve and/or the laminating of case endotheca are used for injecing the position of core in the valve body, through a stop valve, can effectual improvement case the steadiness, increase the stability of case position, keep case central line unanimous with the disk seat central line, the leakproofness of reinforcing stop valve prevents to leak in the valve, the security of reinforcing equipment maintenance improves economic benefits, prevents environmental pollution.

Description

Stop valve

Technical Field

The utility model relates to a valve field particularly, relates to a stop valve.

Background

At present most stop valves are plane seal stop valves, and the case head is the plain end promptly, and at the operation in-process, because the factor of valve design, cause valve rod and horizontal pipeline to become certain contained angle, the case easily receives the action of gravity downward sloping, and then causes the case central line and the disk seat central line inconsistent of stop valve, so that under high temperature environment, the case and the disk seat of valve are washed away through the medium and are very easily caused local wear, and the stop valve after long-time use wearing and tearing can cause the valve internal leakage condition.

The internal leakage of the valve can influence the safety of production, reduce economic benefit and influence green management, concretely, the internal leakage part of the valve can not be isolated by equipment in operation, thereby threatening the safety of maintenance workers, and even causing serious consequences, in addition, the internal leakage of the valve can lead to the reduction of the load factor of the machine and the running economy, the quantity of the internal leakage valves is increased, the cost of repairing, grinding and replacing the valves is increased, in addition, the leakage of waste liquid, waste water or waste gas in the equipment can cause pollution to the surrounding environment, and meanwhile, the adverse social influence is brought to enterprises, thereby the internal leakage of the valve is prevented, and the task of modifying the stop valve has great significance.

In patent CN109084078A, it is mentioned that the anti-rotation guide surface is arranged on the valve core rod, and the cooperation between the interior of the anti-rotation guide sleeve and the anti-rotation guide surface of the valve core rod is utilized to achieve the positioning effect of the valve core, but the stability of the structure of the multi-component matching connection is reduced, and the maintenance and replacement are inconvenient in case of failure, in patent CN204664420U, it is mentioned that a valve seat is arranged between the inflow cavity and the outflow cavity, the valve seat is embedded on the valve flap, one end of the valve rod is arranged in the middle cavity of the valve body, and is connected with the flat notch of the valve flap to form circumferential positioning connection, and in addition, it is stated that the center line of the inflow cavity and the center line of the outflow cavity are in the same straight line and form 45 degrees with the center line of the middle cavity of the valve body, but the change of the valve core is not clearly indicated, and the arrangement of the valve core part is more complicated and the safety is not enough.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a stop valve to solve the straight case that exists among the prior art and receive the decline of gravity factor, make case central line and disk seat central line inconsistent, easily lead to the problem of leaking in the valve, reach the steadiness of effectual improvement case with this, increase the stability of case position, it is unanimous with the disk seat central line to keep case central line, strengthen the leakproofness of stop valve, prevent to leak in the valve, the security of reinforcing equipment maintenance improves economic benefits, prevent environmental pollution.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model relates to a stop valve, including core and valve body, the core includes location portion, and core one end is connected with the valve rod, and the other end and the valve body of core are connected, and the valve body includes valve inner sleeve and case endotheca, and location portion and valve inner sleeve and/or the laminating of case endotheca are used for injecing the position of core in the valve body.

Furthermore, the positioning part comprises a ring positioning part and/or a head positioning part, the ring positioning part is arranged on the side wall of the core body, the ring positioning part is attached to the valve inner sleeve, the head positioning part is arranged at one end, connected with the valve body, of the core body, and the head positioning part is attached to the valve core inner sleeve.

Further, the ring positioning portion and/or the head positioning portion are integrally formed with the core body.

Further, the core includes first core and second core, and first core one end is connected with the valve rod, and the first core other end is connected with the second core, and the one end that first core was kept away from to the second core is connected with the disk seat of valve body, perhaps the one end that first core was kept away from to the second core is connected with the disk seat of valve body through head location portion.

Further, the first core portion is integrally formed with the second core portion.

Further, a valve core inner cavity is formed inside the first core part and used for connecting the valve rod and the core body.

Further, the second core part comprises a main core part and a sealing core part, one end of the main core part is connected with the sealing core part, the other end of the main core part is connected with the first core part, one end, far away from the main core part, of the sealing core part is connected with the valve seat, or one end, far away from the main core part, of the sealing core part is connected with a head positioning part, and one end, far away from the sealing core part, of the head positioning part is connected with the valve seat.

Further, the sealing core part is in a circular truncated cone shape, the diameter of the cross section of the circular truncated cone is gradually reduced along the vertical direction from the first core part to the second core part, the sealing core part is provided with a valve core sealing surface, and the valve core sealing surface is attached to the sealing inner sleeve.

Furthermore, ring location portion is the holding ring, and the holding ring sets up the lateral wall at the main core portion, and holding ring one end is connected with the lower bottom surface of the sealed face of case, and the holding ring other end extends along the main core portion direction that is close to first core portion, and the holding ring is laminated with the valve inner sleeve for make the core inject at the valve body.

Furthermore, the head positioning part is a positioning head, one end of the positioning head is connected with the upper bottom surface of the valve core sealing surface, the other end of the positioning head is connected with the valve seat, and the positioning head is attached to the valve core inner sleeve and used for limiting the core body on the valve seat of the valve body.

Compared with the prior art, a stop valve, following beneficial effect has:

the steadiness of effectual improvement case increases the stability in case position, keeps case central line and disk seat central line unanimous, and the leakproofness of reinforcing stop valve prevents to leak in the valve, and the security of reinforcing overhaul of the equipments improves economic benefits, prevents environmental pollution.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to further explain the present disclosure, and are included to explain the present disclosure and not to constitute an undue limitation on the present disclosure. In the drawings:

FIG. 1 is a schematic view of a primary valve cartridge;

FIG. 2 is a schematic view of a modified valve cartridge;

FIG. 3 is a schematic view of a Y-stop valve;

fig. 4 is a partially enlarged schematic view of a dotted line portion of fig. 3.

Description of reference numerals: 1. a primary valve core; 11. a valve core inner cavity; 12. original sealing surface; 2. a core body; 3. a positioning part; 31. positioning the head; 32. a positioning ring; 4. a valve core sealing surface; 41. a valve cartridge head; 5. an inner sleeve of the valve; 51. the valve rod is sleeved with an inner sleeve; 52. sealing the inner sleeve; 6. a valve core is sleeved in an inner sleeve; 7. a cavity; 71. an inflow chamber; 72. an outflow lumen; 73. a cut-off cavity; 8. a valve body; 81. a valve body horizontal part; 82. a valve body bevel; 9. a valve seat.

Detailed Description

The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These utility concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present embodiment is directed to a shutoff valve, and the integral structure is composed of a valve core and a valve body, as in the conventional shutoff valve.

In the prior art, most of stop valves are plane sealing stop valves, namely, the valve core head part 41 is a flat opening, in the operation process, due to the factor of valve design, a valve rod and a horizontal pipeline form an included angle of 45 degrees, the valve core is easy to incline downwards under the action of gravity, and then the central line of the valve core of the valve is inconsistent with the central line of the valve seat, so that under a high-temperature environment, the valve core and the valve seat of the valve are easily subjected to local wear caused by medium scouring, and the stop valve after long-time wear can cause the condition of internal leakage of the valve.

In order to solve the problem that the central line of the spool 1 is not consistent with the central line of the valve seat 9 of the valve body 8 in the prior art, the present embodiment provides a stop valve, as shown in fig. 1-3, the stop valve includes a core 2 and a valve body 8, the core 2 includes a positioning portion 3, one end of the core 2 is connected to an external valve rod, the other end of the external valve rod is connected to a hand wheel, and the change of the valve rod is controlled by the rotation or pulling of the hand wheel, so as to drive the change of the spool position for controlling the closing and the opening of the spool, the other end of the core 2 is connected to the valve body 8, the valve body 8 includes a valve inner sleeve 5 and a spool inner sleeve 6, and the positioning portion 3 is attached to the valve inner sleeve 5 and/or the spool inner sleeve 6 for limiting the position of the core 2 in the valve body 8.

Core 2 sets up location portion 3, the effectual stability of guaranteeing core 2 in valve body 8 prevents to leak in the valve because of adapting unit is numerous and diverse to cause to influence the steadiness of valve body 8, location portion 3 is effectual simultaneously has reduced the influence of action of gravity to the case, has guaranteed the unanimity of case central line and disk seat 9 central line.

The positioning portion 3 comprises a ring positioning portion and/or a head positioning portion, the ring positioning portion is arranged on the side wall of the core body 2 and is attached to the valve inner sleeve 5, the head positioning portion is arranged at one end, connected with the valve body 8, of the core body 2, the head positioning portion is attached to the valve core inner sleeve 6, and the ring positioning portion and/or the head positioning portion are/is integrally formed with the core body 2.

Location portion 3 can the selectivity set up according to different situations, when two kinds of location all select, can dual inject the position of core 2 in valve body 8, is favorable to strengthening the locate function to core 2, improves the probability of case central line and 9 central lines collineations of disk seat, avoids with the emergence of the interior hourglass condition of valve, improve equipment's security.

As shown in fig. 1, the original valve element 1 includes a valve element head portion 41, an original sealing surface 12 and a valve element inner cavity 11, the valve element inner cavity 11 is disposed at one end of the original valve element 1, the valve element head portion 41 is disposed at one end of the original valve element 1 far from the valve element inner cavity 11, the valve element head portion 41 is a plane, the original sealing surface 12 is located on a side wall of one end of the original valve element 1 far from the valve element inner cavity 11, one side of the original sealing surface 12 far from the valve element inner cavity 11 is connected to the valve element head portion 41, an included angle between the original sealing surface 12 and the valve element head portion 41 is 30 °, the original valve element 1 is a carbon steel structure with a diameter of 51mm in this embodiment, but is not limited to this structure or this diameter size.

The original valve core 1 is used as a reference part, and the problem of valve internal leakage caused by the fact that the original valve core 1 slides downwards easily under the action of gravity is solved according to the defects of the original valve core 1 in practical application, so that the original valve core is further improved and optimized, and a matched valve core is created according to actual requirements.

As shown in fig. 2, the core 2 includes a first core portion and a second core portion, one end of the first core portion is connected to the valve rod, the other end of the first core portion is connected to the second core portion, one end of the second core portion, which is far away from the first core portion, is connected to the valve seat 9 of the valve body 8, or one end of the second core portion, which is far away from the first core portion, is connected to the valve seat 9 of the valve body 8 through a head positioning portion, the first core portion and the second core portion are integrally formed, an inner core portion 11 is formed inside the first core portion, an axis of the inner core portion 11 is collinear with an axis of the first core portion, the inner core portion 11 is used for connecting the valve rod to the core 2, the second core portion includes a main core portion and a seal core portion, one end of the main core portion is connected to the seal core portion, the other end of the main core portion is connected to the second core portion, one end of the seal core portion, which is far away from the main core portion, is connected to the valve seat 9, the seal core portion is in a circular truncated cone shape, a diameter of a cross section of the circular cone is gradually reduced, the seal core portion is provided with a sealing surface 4, and a sealing surface of the side wall of the inner sleeve is provided with a sealing surface 52.

In this embodiment, an included angle between the valve element sealing surface 4 and the side wall of the main core portion is 45 °, but not limited to the degree, the core body 2 is a carbon steel structure with a diameter of 51mm, but not limited to the material or the diameter size, a cross section in a circular truncated cone cross section refers to a cross section parallel to a horizontal plane when the circular truncated cone is horizontally placed, a cross section in this embodiment refers to a plane perpendicular to a vertical direction from the first core portion to the second core portion as a tangent plane, a plane of the truncated cone is the circular truncated cone cross section, an upper bottom surface refers to a plane where a side with the smallest diameter of the valve element sealing surface 4 is located, that is, the side with the smallest diameter of the circular truncated cone cross section, a lower bottom surface refers to a plane where a side with the largest diameter of the valve element sealing surface 4 is located, that is, the upper bottom surface and the lower bottom surface are complete words and do not refer to directional limitations.

The core body 2 is the improved valve core, the core body 2 is favorable for ensuring that the valve core of the valve is well positioned and is concentric with the valve seat 9, the scouring of media to the head part 41 of the valve core under the high-temperature condition is reduced, the service life of the valve core is prolonged, the stability of the valve core is improved, the service time of the valve core is prolonged, and the replacement and repair cost increased due to the fault of the valve core is reduced.

As shown in fig. 2, the ring positioning portion is a positioning ring 32, the positioning ring 32 is disposed on a side wall of a main core portion, the main core portion is a portion between the valve core inner cavity 11 and the valve core sealing surface 4, one end of the positioning ring 32 is connected to a lower bottom surface of the valve core sealing surface 4, the other end of the positioning ring 32 extends along a direction of the main core portion close to the first core portion, the positioning ring 32 is attached to the valve inner sleeve 5 for limiting the core 2 to the valve body 8, the positioning ring 32 is welded to the core 2, an outer diameter of the positioning ring 32 is 51.8mm, a height of the positioning ring 32 is 5mm, an outer diameter of the positioning ring 32 is a diameter of a side of the positioning ring 32 away from the core 2, a height of the positioning ring 32 is a height of a side parallel to or overlapping the core 2, the head positioning portion is a positioning head 31, one end of the positioning head 31 is welded to an upper bottom surface of the valve core sealing surface 4, the other end of the positioning head 31 is connected to the valve seat 9, the positioning head 31 is attached to the valve core inner sleeve 6 for limiting the core 2 to the valve seat 9 of the valve body 8, an outer diameter of the positioning head 31 is 41.9, and both the positioning head 32 and the positioning head 31 are made of hard alloy.

Two location portions 3 combine together and use, are favorable to further eliminating the potential safety hazard of leaking in the valve, improve equipment's fail safe nature, and the positioning effect of reinforcing valve case guarantees that valve case and disk seat 9 are concentric, reduces the influence of action of gravity to the valve, reduces the risk coefficient of leaking in the valve, guarantees the safe operation of equipment.

As shown in fig. 3, the Y-type stop valve includes a valve body 8, a cavity 7 is formed inside the valve body 8, the valve body 8 includes a valve body horizontal portion 81 and a valve body inclined portion 82, the valve body horizontal portion 81 and the valve body inclined portion 82 are integrally formed, an included angle between the valve body horizontal portion 81 and the valve body inclined portion 82 is an acute angle, the valve body inclined portion 82 is inclined to the left, the cavity 7 is formed inside the valve body 8, the cavity 7 includes an inflow chamber 71, an outflow chamber 72 and a stop chamber 73, the inflow chamber 71 is communicated with the outflow chamber 72 through the stop chamber 73, both the inflow chamber 71 and the outflow chamber 72 are disposed at the valve body horizontal portion 81, the inflow chamber 71 is disposed at the left end of the valve body horizontal portion 81, the outflow chamber 72 is disposed at the right end of the valve body horizontal portion 81, a center line of the inflow chamber 71 and the outflow chamber 72 is consistent with a center line of the valve body horizontal portion 81, a gap is formed between the inflow chamber 71 and the outflow chamber 72, a valve seat 9 is disposed at the left end of the outflow chamber 72 for connecting the core 2 to seal, the stop chamber 73 is disposed at the valve body inclined portion 82, a center line of the valve body inclined portion 73 and a center line of the valve body inclined portion 82, a collinear medium inflow to the right direction from the left to the left end of the valve body horizontal portion 81, and a collinear medium outflow medium to the valve body horizontal portion 81.

The level setting of Y type stop valve is favorable to the flow of medium, reduces the effect of medium flow resistance to core 2, is difficult for gathering on cavity 7 of valve body 8, simultaneously, and what cut off chamber 73 was provided with does benefit to the break-make ability that improves the stop valve, guarantees the smoothness nature of valve operation, reduces certain effort, reduces the medium to the erodeing of core 2, guarantees that core 2 can long-time use.

The stop cavity 73 is sequentially connected by a valve rod inner sleeve 51, a valve inner sleeve 5, a sealing inner sleeve 52 and a valve core inner sleeve 6, the valve rod inner sleeve 51 is arranged at one end of a valve body inclined part 82 far away from a valve body horizontal part 81, the valve core inner sleeve 6 is connected with an outflow cavity 72, in the using process, a Y-shaped stop valve is placed in a core body 2 along the end of the valve rod inner sleeve 51 of the valve body inclined part 82, after the Y-shaped stop valve is placed, a positioning ring 32 is positioned at the valve inner sleeve 5, a valve core sealing surface 4 is positioned at the sealing inner sleeve 52, the gap between the positioning ring 32 and the valve inner sleeve 5 is 0.2mm and is used for limiting the position of a second core part at a valve body 8, a positioning head 31 is positioned at the valve core inner sleeve 6, one end of the positioning head 31 far away from the valve core part 41 is clamped with a valve seat 9 of the outflow cavity 72, the gap between the positioning head 31 and the valve core inner sleeve 6 is 0.1mm and is used for reinforcing and limiting the position of the core body 2 in the valve body 8, the inner sleeve 51mm, the inner sleeve 5mm of the valve rod inner sleeve is 52mm, and the inner diameter of the valve core 6 is 42mm of the inner sleeve 6 of the valve rod 6.

Each part of the cut-off cavity 73 is mutually matched, the area where the core body 2 is located is limited to a certain extent in an auxiliary mode, favorable conditions are provided for the positioning part 3 on the core body 2, meanwhile, the positioning part 3 of the core body 2 is matched with the cut-off cavity 73, the position of the core body 2 is further strengthened and determined, the core body 2 is prevented from deviating downwards due to the action of gravity in the working process, the core body 2 is not concentric with the valve seat 9, and meanwhile, the incidence rate of leakage in the valve is reduced.

When the stop valve is used, a hand wheel on the valve rod rotates or the lifting belt drives the valve rod to move, the core body 2 is driven to move in the valve rod moving process, when the core body 2 is opened, the stop valve is in a conducting state, a medium enters the outflow cavity 72 from the inflow cavity 71 through the stop cavity 73 and then flows out of the valve body 8, when the core body 2 is closed, the stop valve is in a disconnecting state, the medium enters from the inflow cavity 71 at the moment and is isolated by the core body 2, and the medium cannot enter the outflow cavity 72.

In the present invention, for any stop valve, the stop valve may include the Y-shaped stop valve structure in this embodiment, and on the basis of the related structure and the assembly relationship of the original valve element 1 provided in this embodiment, the Y-shaped stop valve further includes conventional components including the structures of the valve body 8, the cavity 7, and the like; since they are all prior art, they are not described herein.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stop valve, its characterized in that, includes core (2) and valve body (8), core (2) are connected with the valve rod including location portion (3), core (2) one end, and the other end and valve body (8) of core (2) are connected, and valve body (8) are including valve endotheca (5) and case endotheca (6), and location portion (3) and valve endotheca (5) and/or the laminating of case endotheca (6) are used for injecing the position of core (2) in valve body (8).

2. A stop valve according to claim 1, characterized in that the positioning portion (3) comprises a ring positioning portion and/or a head positioning portion, the ring positioning portion is arranged on the side wall of the core body (2), the ring positioning portion is attached to the valve inner sleeve (5), the head positioning portion is arranged at one end of the core body (2) connected with the valve body (8), and the head positioning portion is attached to the valve core inner sleeve (6).

3. A stop valve according to claim 2, wherein the ring-locating portion and/or the head-locating portion are formed integrally with the core (2).

4. A stop valve according to claim 2, wherein the core (2) comprises a first core part and a second core part, one end of the first core part is connected with the valve rod, the other end of the first core part is connected with the second core part, one end of the second core part far away from the first core part is connected with the valve seat (9) of the valve body (8), or one end of the second core part far away from the first core part is connected with the valve seat (9) of the valve body (8) through a head positioning part.

5. A stop valve according to claim 4, wherein the first core is formed integrally with the second core.

6. A stop valve according to claim 4, characterized in that the first core internally forms an inner core cavity (11), and the inner core cavity (11) is used for connecting the valve rod and the core (2).

7. A stop valve according to claim 4, wherein the second core comprises a main core part and a sealing core part, one end of the main core part is connected with the sealing core part, the other end of the main core part is connected with the first core part, one end of the sealing core part far away from the main core part is connected with the valve seat (9), or one end of the sealing core part far away from the main core part is connected with a head positioning part, and one end of the head positioning part far away from the sealing core part is connected with the valve seat (9).

8. A stop valve according to claim 7, characterized in that the sealing core is truncated cone-shaped, the diameter of the truncated cone cross section gradually decreases along the vertical direction from the first core part to the second core part, the sealing core part is provided with a valve core sealing surface (4), and the valve core sealing surface (4) is attached to the sealing inner sleeve (52).

9. A stop valve according to claim 8, wherein the ring positioning portion is a positioning ring (32), the positioning ring (32) is disposed on the side wall of the main core, one end of the positioning ring (32) is connected to the lower bottom surface of the valve core sealing surface (4), the other end of the positioning ring (32) extends along the main core in the direction close to the first core, and the positioning ring (32) is attached to the valve inner sleeve (5) for limiting the core (2) to the valve body (8).

10. A stop valve according to claim 8, characterized in that the head positioning part is a positioning head (31), one end of the positioning head (31) is connected with the upper bottom surface of the valve core sealing surface (4), the other end of the positioning head (31) is connected with the valve seat (9), and the positioning head (31) is attached with the valve core inner sleeve (6) and used for limiting the core body (2) on the valve seat (9) of the valve body (8).