CN214466255U

CN214466255U - Low-temperature upper-mounted ball valve

Info

Publication number: CN214466255U
Application number: CN202120194630.2U
Authority: CN
Inventors: 吴怀敏; 项光洪; 项良海; 储嵩; 殷红强; 王仁爱; 鲍必铧; 谷辽勇; 廖来凤
Original assignee: Zhejiang Petrochemical Valve Co ltd
Current assignee: Zhejiang Petrochemical Valve Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-10-22
Anticipated expiration: 2031-01-25

Abstract

The utility model discloses a low temperature facial make-up ball valve relates to the valve field, including valve body, valve gap and valve rod, a valve pocket has been seted up to the inside of valve body, be equipped with the spheroid of being connected with the valve rod bottom in the valve pocket, the top of valve pocket, the surface of valve body are provided with the valve gap, be equipped with respectively between spheroid both sides and the valve body slope setting and with the sealed complex disk seat of spheroid, be equipped with the two elastic component of contradicting between valve rod and the spheroid. The utility model has the advantages of good sealing performance.

Description

Low-temperature upper-mounted ball valve

Technical Field

The utility model relates to a valve field, concretely relates to low temperature facial make-up formula ball valve.

Background

With the rapid rise of Liquefied Natural Gas (LNG) as a new energy source, the market demand of the ultralow-temperature valve is increased, and the ultralow-temperature top-mounted ball valve attracts the majority of users by the advantages of rapid opening and closing, small flow resistance, online maintenance and the like. However, no good technical scheme exists in the manufacturing of the ultralow-temperature top-mounted ball valve seat with a small caliber at present, and the reason is that the valve cavity is too small and certain difficulty exists in processing. The small-caliber ball valve mainly adopts a floating ball structure at present, the floating ball valve sealing needs to have an initial pre-tightening specific pressure, the pre-tightening specific pressure at normal temperature is realized by the elastic deformation of a non-metal valve seat material, but the non-metal valve seat material has larger shrinkage at an ultralow temperature, the pre-tightening specific pressure disappears, the sealing effect cannot be achieved, and an additional elastic mechanism is required to compensate the shrinkage of the valve seat, so that the pre-tightening specific pressure is ensured.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a low temperature facial make-up formula ball valve that sealing performance is good.

The utility model discloses the technical scheme who adopts: the utility model provides a low temperature upper assembling type ball valve, includes valve body, valve gap and valve rod, a valve pocket has been seted up to the inside of valve body, be equipped with the spheroid of being connected with the valve rod bottom in the valve pocket, the top of valve pocket, the surface of valve body are provided with the valve gap, be equipped with respectively between spheroid both sides and the valve body slope set up and with the spheroid seal complex disk seat, be equipped with the elastic component of the two of contradicting between valve rod and the spheroid.

And one side of the valve seat facing the ball body is provided with an embedded sealing ring.

The valve rod is provided with a step part for installing the elastic part, the upper end of the elastic part is contacted with the lower surface of the step part, and the lower end of the elastic part is contacted with the upper surface of the ball body.

And a friction reducing pad and a sealing pad are arranged between the upper part of the step part and the valve cover.

The elastic piece adopts a spring.

The valve seat and the vertical plane form an included angle of 5 degrees.

The utility model has the advantages that: this technical scheme is through setting up the elastic component between spheroid and valve rod, and the sealed cooperation of spheroid and both sides disk seat sets up for the slope, and the elastic component can be for the low temperature feeding volume that provides of spheroid and disk seat, avoids the disappearance of the cold contraction of material and the sealed specific pressure that leads to under the low temperature, guarantees to have sealed specific pressure between disk seat and the spheroid all the time, has the advantage that sealing performance is good.

Drawings

Fig. 1 is the utility model discloses a structural schematic of low temperature upper assembling type ball valve.

Detailed Description

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

as shown in the figure, a low temperature upper assembling type ball valve, including valve body 1, valve gap 2 and valve rod 3, a valve pocket has been seted up to the inside of valve body 1, be equipped with spheroid 4 of being connected with 3 bottoms of valve rod in the valve pocket, the top of valve pocket, the surface of valve body 1 are provided with valve gap 2, be equipped with the slope respectively between 4 both sides of spheroid and the valve body 1 and set up and with the sealed complex disk seat 5 of spheroid 4, be equipped with 7 this technical scheme of the elastic component of the two of contradicting between valve rod 3 and spheroid through set up the elastic component between spheroid and valve rod, and the sealed cooperation of spheroid and both sides disk seat sets up for the slope, and the elastic component can be for the low temperature lower feeding volume of providing of spheroid and disk seat, avoids the cold shrinkage of material under the low temperature and disappearance of the sealed specific pressure that leads to, guarantees to have sealed specific pressure between disk seat and the spheroid all the time.

And one side of the valve seat 5, which faces the ball 4, is provided with an embedded sealing ring 8, so that the sealing performance of the ball and the valve seat is ensured.

Valve rod 3 is equipped with the step portion 9 that supplies the installation of elastic component 7, the contact of elastic component 7 upper end step portion 9 lower surface, the contact of elastic component 7 lower extreme the upper surface of spheroid 4, elastic component 7 adopts the spring, and its suit is in on the valve rod, the upper end conflicts step portion, and the lower extreme provides the pretightning force for the spheroid.

And a friction reducing pad 10 and a sealing pad 11 are arranged between the upper part of the step part 9 and the valve cover 2, so that the service life is prolonged, and the sealing performance is improved.

The valve seat 5 and the vertical plane form an included angle of 5 degrees, and the sealing effect is good.

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", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings 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 terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides a low temperature upper assembling type ball valve, includes valve body (1), valve gap (2) and valve rod (3), a valve pocket has been seted up to the inside of valve body (1), be equipped with spheroid (4) of being connected with valve rod (3) bottom in the valve pocket, the top of valve pocket, the surface of valve body (1) are provided with valve gap (2), its characterized in that: be equipped with slope setting and with spheroid (4) seal fit's disk seat (5) between spheroid (4) both sides and valve body (1) respectively, be equipped with between valve rod (3) and spheroid (4) and contradict elastic component (7) of the two.

2. The cryogenic top-loading ball valve according to claim 1, wherein: and one side of the valve seat (5) facing the ball body (4) is provided with a sealing ring (8) installed in an embedded manner.

3. The cryogenic top-loading ball valve according to claim 2, wherein: the valve rod (3) is provided with a step part (9) for installing an elastic part (7), the upper end of the elastic part (7) is contacted with the lower surface of the step part (9), and the lower end of the elastic part (7) is contacted with the upper surface of the ball body (4).

4. The cryogenic top-loading ball valve according to claim 3, wherein: and a friction reducing pad (10) and a sealing pad (11) are arranged between the upper part of the step part (9) and the valve cover (2).

5. The cryogenic top-loading ball valve according to claim 1, wherein: the elastic piece (7) adopts a spring.

6. The cryogenic top-loading ball valve according to claim 1, wherein: the included angle between the valve seat (5) and the vertical plane is 5 degrees.