CN213575690U

CN213575690U - High-temperature ball valve

Info

Publication number: CN213575690U
Application number: CN202022737938.5U
Authority: CN
Inventors: 王章章; 章成选; 夏传虎
Original assignee: KCM VALVE CO Ltd
Current assignee: KCM VALVE CO Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-29
Anticipated expiration: 2030-11-24

Abstract

A high temperature ball valve. The method is characterized in that: all there is the clearance between the inner wall of disk seat, spring holder and mounting groove, and the combined seal ring includes the graphite circle, and the outer lane at graphite circle both ends all is provided with first becket, and the thickness of first becket is greater than the clearance. Its advantage lies in, sets up first becket at graphite circle both ends outer lane, keeps off the clearance through first becket, like this alright in order when increaseing the clearance, avoid graphite to enter into the clearance to both guarantee that the problem that the disk seat is locked by the valve body can not appear, guarantee sealing performance again, can further increase the rigidity of graphite circle moreover, non-deformable in the transportation.

Description

High-temperature ball valve

Technical Field

The utility model relates to a ball valve, concretely relates to high temperature ball valve.

Background

Ball valve (ball valve) refers to a valve in which the opening and closing member is a ball, and is driven by a valve rod and rotates around the axis of the ball valve, and the valve can be used for regulating and controlling fluid. Wherein, the spheroid of fixed ball valve is fixed, and the disk seat can float to can keep sealed with the spheroid laminating.

But because the thermal expansion coefficient of valve body and disk seat is different, under high temperature operating mode, the disk seat is easily locked by the valve body to sealed laminating formation between unable assurance disk seat and the spheroid reveals. In order to avoid the problem that the valve seat is locked, the gap between the valve body and the valve seat is enlarged in the conventional method, but after the gap is enlarged, graphite used for sealing the valve seat and the valve body on the valve seat is extruded and then easily enters the gap, so that the time is long, and the leakage problem is easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a high-temperature ball valve.

The utility model discloses the technical scheme who adopts: a high-temperature ball valve comprises a valve body, a ball body, a valve rod and a valve seat assembly, wherein the ball body is arranged in the valve body, the valve rod extends into the valve body and is in linkage connection with the ball body, and the valve seat assembly is arranged between the ball body and the valve body; the valve seat assembly comprises a valve seat, a combined sealing ring, a spring seat and a spring, which are sequentially arranged, wherein one end of the spring is abutted against the valve body, and the other end of the spring is arranged in the spring seat and abutted against the spring seat, so that the valve seat can be driven to be sealed with the ball body; all there is the clearance between the inner wall of disk seat, spring holder and mounting groove, the combined sealing ring includes the graphite circle, the outer lane at graphite circle both ends all is provided with first becket, the thickness of first becket is greater than the clearance.

And the inner rings at two ends of the graphite ring are provided with second metal rings.

The mounting groove is that the one end that is close to the spheroid is formed with spacing groove, the outer lane that the disk seat is close to spheroid one end is equipped with spacing boss, wholly is the type of dogbone, spacing boss is located the spacing inslot.

And a conical sealing surface which can be in sealing fit with the ball body is formed at one end of the valve seat, which is close to the ball body.

The utility model has the advantages that: scheme more than adopting sets up first becket at graphite circle both ends outer lane, keeps off the clearance through first becket, like this alright in order when increaseing the clearance, avoid graphite to enter into the clearance to both guarantee that the problem that the disk seat is locked by the valve body can not appear, guarantee sealing performance again, can further increase the rigidity of graphite circle moreover, non-deformable in the transportation.

Drawings

Fig. 1 is the structural schematic diagram of the high-temperature ball valve of the embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Fig. 3 is an enlarged schematic view of fig. 2 at B.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in the figure, a high temperature ball valve, includes valve body 1, spheroid 2, valve rod 3, disk seat subassembly, spheroid 2 sets up in valve body 1, valve rod 3 one end is stretched into valve body 1 and is connected with the spheroid linkage, and the other end is connected with the final controlling element who orders about its action, the disk seat subassembly sets up between spheroid 2 and valve body 1.

The valve comprises a valve body 1, and is characterized in that a mounting groove 11 is formed in the valve body 1, a valve seat assembly is arranged in the mounting groove 11 and can axially move along a valve body flow channel, and the valve seat assembly comprises a valve seat 4, a combined sealing ring 5, a spring seat 6 and a spring 7 which are sequentially arranged.

The mounting groove 11 is that the one end that is close to spheroid 2 is formed with spacing groove 12, the outer lane that the disk seat 4 is close to spheroid 2 one end is equipped with spacing boss 41, wholly is the type of dogleg, spacing boss 41 is located spacing groove 12, can constitute axial spacing with spacing groove 12, just disk seat 4 is formed with the sealed face 42 of toper that is formed with and can seals up complex with spheroid 2 near spheroid 2 one end, can form reliable seal with the spheroid sphere through the sealed face 42 of toper, combined seal ring 5 covers the cover and establishes in disk seat 4 outer lane to set up between disk seat 4 and spring holder 6, can with disk seat 4, spring holder 6, valve body 1 between constitute sealed cooperation, spring 7 one end offsets with the valve body, and the other end sets up in spring holder 6 and offsets with spring holder 6, can order about disk seat 4 and spheroid 2 sealed.

All there is clearance 8 between the inner wall of valve seat 4, spring holder 6 and mounting groove 11 to it can move in mounting groove 11, combined seal ring 5 includes graphite circle 51, the outer lane at graphite circle 51 both ends all is provided with first becket 52, first becket 52's thickness is greater than clearance 8.

Scheme more than adopting sets up first becket 52 in graphite circle 51 both ends outer lane, can block clearance 8 through first becket 52, like this alright in order when increaseing the clearance, avoid graphite to enter into the clearance to both guarantee that the problem that the disk seat is locked by the valve body can not appear, guarantee sealing performance again, can further increase the rigidity of graphite circle moreover, non-deformable in the transportation.

In addition, the inner rings at the two ends of the graphite ring 51 are provided with the second metal rings 53, and the second metal rings 53 are matched with the first metal rings 52, so that the rigidity of the graphite ring can be further increased, and the graphite ring is further prevented from being deformed in transportation.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to 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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A high-temperature ball valve comprises a valve body (1), a ball body (2), a valve rod (3) and a valve seat assembly, wherein the ball body (2) is arranged in the valve body (1), the valve rod (3) extends into the valve body (1) to be connected with the ball body in a linkage manner, and the valve seat assembly is arranged between the ball body (2) and the valve body (1);

the method is characterized in that: the valve comprises a valve body (1), a mounting groove (11) is formed in the valve body (1), a valve seat assembly is arranged in the mounting groove (11) and can axially move along a valve body flow channel, the valve seat assembly comprises a valve seat (4), a combined sealing ring (5), a spring seat (6) and a spring (7) which are sequentially arranged, one end of the spring (7) abuts against the valve body, the other end of the spring (7) is arranged in the spring seat (6) and abuts against the spring seat (6), and the valve seat (4) can be driven to be sealed with a ball body (2);

all there is clearance (8) between the inner wall of disk seat (4), spring holder (6) and mounting groove (11), combination sealing ring (5) include graphite circle (51), the outer lane at graphite circle (51) both ends all is provided with first becket (52), the thickness of first becket (52) is greater than clearance (8).

2. A high temperature ball valve as claimed in claim 1, wherein: and the inner rings at two ends of the graphite ring (51) are provided with second metal rings (53).

3. A high temperature ball valve as claimed in claim 1, wherein: the mounting groove (11) is that one end that is close to spheroid (2) is formed with spacing groove (12), the outer lane that disk seat (4) is close to spheroid (2) one end is equipped with spacing boss (41), wholly is the type of dogbone, spacing boss (41) are located spacing groove (12).

4. A high temperature ball valve as claimed in claim 1, wherein: one end of the valve seat (4) close to the ball body (2) is provided with a conical sealing surface (42) which can be in sealing fit with the ball body (2).