CN217081433U

CN217081433U - Low-temperature valve mounted on vertical pipeline

Info

Publication number: CN217081433U
Application number: CN202220057669.4U
Authority: CN
Inventors: 王邦捷; 卓桂朝; 柴浩; 戴文柏; 辜强; 杨剑; 卓梅呈
Original assignee: Sanbora Valve Co ltd
Current assignee: Sanbora Valve Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-07-29
Anticipated expiration: 2032-01-11

Abstract

The utility model provides a low-temperature valve installed on a vertical pipeline, which comprises a valve body, a valve cover and a valve rod which are installed on the vertical pipeline, the valve body is Y-shaped, the valve rod and the valve cover are inclined at an angle of 45 degrees relative to the vertical pipeline, the lower end of the valve body is an inlet end, the upper end of the valve body is respectively provided with an outlet end and a right side port, the valve body is fixedly connected with the valve cover through a nut and a stud, a valve seat is obliquely extended in the valve body cavity towards the outlet end, hard alloy is welded on the sealing surface of the valve seat, the valve seat is provided with a valve clack which is connected with a valve clack gland through a thread, the valve rod penetrates through the valve cover to extend to the valve body and penetrates through the valve clack gland to be connected with the valve clack, a lengthened valve cover structure is adopted, the influence of the low-temperature medium on the filler can be reduced, the temperature of the filler is ensured to be close to normal temperature, the risk of leakage of the process medium is reduced, and meanwhile, the water vapor in the external air can be prevented from being frozen at the valve rod sealing element.

Description

Low-temperature valve mounted on vertical pipeline

Technical Field

The utility model relates to a technical field who uses the valve on the low temperature device specifically is an install low temperature valve on perpendicular pipeline.

Background

In the original field use process, the valve rod is horizontally arranged, the filler of the valve rod is easy to frost, and the opening and closing of the valve are seriously influenced. According to a valve for conveying liquid media and a non-cold box valve in GB/T24925-2019 low-temperature valve technical condition, a valve rod can be operated on the ground in a direction of not less than 45 degrees with the ground; the valve for the cold box can be specified by operating a valve rod in a direction of 15-90 degrees with the ground on the ground, so that the mode of horizontally installing the valve rod is not adopted.

At present, a valve rod of a valve installed on a vertical pipeline is mostly horizontally installed, and a low-temperature medium is easy to accumulate at a lengthened part of the valve rod, so that the low-temperature medium at the part and the low-temperature medium in a valve cavity are easy to exchange cold energy, the temperature of a filler of the valve is low, the filler is easy to frost and freeze at the position, and the valve is difficult to open and close. Therefore, how to ensure that the valve rod filler does not frost and freeze is the biggest problem when the low-temperature valve arranged on the vertical pipeline is used.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an install cryogenic valve on vertical pipe.

The utility model provides an install low temperature valve on perpendicular pipeline adopts following technical scheme: the valve body is Y-shaped, the valve rod and the valve cover incline 45 degrees relative to the vertical pipeline, the lower end of the valve body is an inlet end, the upper end of the valve body is an outlet end and a right side port respectively, the valve body and the valve cover are fixedly connected through a nut and a stud, a valve seat is obliquely extended towards the outlet end in a valve body cavity, hard alloy is welded on the sealing surface of the valve seat in a surfacing mode, a valve clack is arranged on the valve seat, the valve clack is connected with a valve clack through threads, the contact outer surface is prevented from loosening through spot welding, the valve rod penetrates through the valve cover and extends to the valve body and is connected with the valve clack through the valve clack gland, a sealing ring is arranged on the inner wall of the upper end of the valve cover, a packing pad, a packing pressing sleeve and a packing gland are sequentially arranged on the upper end of the sealing ring, and the packing gland is fixedly connected with the valve cover through a cylindrical pin, a movable joint bolt, a thick nut, and a disc spring is arranged between the thick nut and the packing gland.

Adopt above-mentioned technical scheme, the valve body adopts the Y type, slope 45 jiaos of installation, valve clack gland can fix valve rod inclination when the valve is opened and close, reduce the valve rod vibrations, spacing operation, valve clack gland again with valve clack threaded connection, the locking shock-resistant ability of further improvement of spot welding, can also protect the valve rod bottom, adopt elongated valve gap structure, can reduce the influence that packs and receive the low temperature medium, ensure that the packing temperature is close to the normal atmospheric temperature, make it more be close to ambient temperature, just so can to very big degree improve the operating mode that the valve seal packed, reduce the risk that the technology medium leaked, can avoid the vapor in the outside air to freeze in valve rod sealing spare department simultaneously. Meanwhile, the risk that the surface of the valve rod is scratched is greatly reduced, and the valve rod is sealed reliably for a long time.

Further, a winding gasket is arranged between the valve cover and the valve body.

By adopting the technical scheme, the sealing function is realized between the valve cover and the valve body.

Further, a bearing seat is welded at a channel at the lower end of the valve cover, a bearing is arranged on the bearing seat, and the valve rod penetrates through the bearing.

By adopting the technical scheme, the valve rod is guided and fixed.

Further, the outer wall of the valve rod is provided with a sealing surface, and an upper sealing pair is formed by the sealing surface at the lower end of the sealing ring and the sealing surface of the valve rod.

Furthermore, the valve body is integrally formed with a reinforcing rib fixedly connected with the valve seat.

By adopting the technical scheme, the valve seat can be supported.

Further, the upper end of the valve rod penetrates through a valve rod nut and is fixedly connected with a hand wheel;

by adopting the technical scheme, the valve is convenient to open by rotating the hand wheel.

Furthermore, the outer wall of the upper end of the valve rod is provided with a scale plate and an indication cover;

by adopting the technical scheme, the scale marks are arranged on the outer bottom side periphery of the indicating cover, the scales marked by the scale marks are 0%, 25%, 50%, 75% and 100%, and the valve flow regulation is controlled by the rotation of the hand wheel according to the scales on the indicating cover, so that the opening degree of the valve clack is accurately controlled.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by adopting the lengthened valve cover structure, the influence of a low-temperature medium on the filler can be reduced, the filler temperature is ensured to be close to the normal temperature, and the filler temperature is enabled to be closer to the ambient temperature, so that the working condition of the valve sealing filler can be improved to a great extent, the risk of leakage of the process medium is reduced, and meanwhile, the water vapor in the external air can be prevented from freezing at the valve rod sealing element. Meanwhile, the risk that the surface of the valve rod is scratched is greatly reduced, and the valve rod is sealed reliably for a long time.

2. The valve body is Y-shaped, and the valve rod and the valve cover are inclined at an angle of 45 degrees relative to the vertical pipeline. Valve clack gland can be when the valve is opened and close fixed valve rod inclination, reduce valve rod vibrations, spacing operation, and valve clack gland and valve clack threaded connection again, and the spot welding is locking further improves shock-resistant ability, can also protect the valve rod bottom.

3. The valve clack is obliquely arranged on the sealing surface of the valve seat, and hard alloy is surfacing welded on the sealing surface of the valve clack, so that the service life of the valve clack and the valve seat is prolonged, and the long-term stable use of the valve is guaranteed.

4. Through the scale on the instruction cover, can be through the control valve flow of rotating the hand wheel to the aperture of accurate control valve clack.

The present invention will be explained in detail with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the sealing structure of the valve seat and the valve flap of the present invention;

FIG. 4 is a schematic view of the upper seal between the valve rod and the valve cover when the valve of the present invention is fully closed;

fig. 5 is the sealing schematic diagram of the valve rod and the valve cover when the valve is fully opened.

In the figure: 1. a valve body; 2. a valve flap; 3. a valve clack gland; 4. a valve stem; 5. winding the gasket; 7. a valve cover; 8. a bearing seat; 9. a bearing; 10. a filler pad; 11. a filler; 12. pressing and sleeving the filler; 13. a packing gland; 14. a cylindrical pin; 15. an eye bolt; 16. a valve stem nut; 17. a scale plate; 18. an indicator cover; 19. a hand wheel; 1-1, a valve seat; 1-2, reinforcing ribs; 7-1 and a sealing ring.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The first embodiment is as follows:

the embodiment of the utility model discloses a low temperature valve installed on a vertical pipeline, please refer to the attached figure 1-2 emphatically, including a valve body 1, a valve cover 7 and a valve rod 4 installed on the vertical pipeline A, the valve body 1 is Y-shaped, the valve rod 4 and the valve cover 7 incline 45 degrees relative to the vertical pipeline A, the lower end of the valve body 1 is an inlet end, the upper end of the valve body 1 is an outlet end and a right side port respectively, the valve body 1 and the valve cover 7 are fixedly connected through a nut and a stud, a valve seat 1-1 is extended in the cavity of the valve body 1 in an inclined way towards the outlet end, a valve clack 2 is arranged on the valve seat 1-1, the valve clack 2 is connected with a valve clack gland 3 through a thread, the valve rod 4 penetrates the valve cover 7 to extend to the valve body 1 and penetrates the valve clack gland 3 to be connected with the valve clack 2, the inner wall of the upper end of the valve cover 7 is provided with a sealing ring 7-1, the upper end of the sealing ring 7-1 is sequentially provided with a packing pad 10, packing 11, a packing pressing sleeve 12 and a packing pressing cover 13, the packing pressing cover 13 is fixedly connected with the valve cover 7 through a cylindrical pin 14, an eyelet bolt 15 and a thick nut, and a disc spring is arranged between the thick nut and the packing pressing cover 13. And a winding gasket 5 is arranged between the valve cover 7 and the valve body 1. A bearing seat 8 is welded at the lower end channel of the valve cover 7, a bearing is arranged on the bearing seat 8, and the valve rod 4 penetrates through the bearing.

Please refer to fig. 4 and 5, the outer wall of the valve rod 4 is provided with a sealing surface, and the sealing surface at the lower end of the sealing ring 7-1 and the sealing surface of the valve rod 4 form an upper sealing pair.

Please refer to fig. 1-2 again, the valve body 1 is integrally formed with a reinforcing rib 1-2 fixedly connected with the valve seat 1-1, the upper end of the valve rod 4 passes through a valve rod nut 16 and is fixedly connected with a hand wheel 19, and the outer wall of the upper end of the valve rod 4 is provided with a scale plate 17 and an indicating cover 18.

The embodiment of the utility model provides a low temperature valve's of installing on vertical pipe implementation principle does:

when the valve is opened, the hand wheel 19 is rotated anticlockwise, the valve rod 4 slowly rises towards the hand wheel 19 under the action of the valve rod nut 16, the sealing surface of the valve clack 2 begins to be separated from the sealing surface of the valve seat under the driving of the valve rod 4, meanwhile, the valve rod 4 continues to rise until the upper sealing structure on the valve rod 4 is in contact with the sealing structure in the valve cover 7 and keeps sealing, the maximum stroke is reached, the valve is fully opened at the moment, and the motion track of the valve rod 4 when the valve is closed is opposite to the situation.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, if the method and the technical solution of the present invention are adopted, the present invention can be directly applied to other occasions without substantial improvement, and the present invention is within the protection scope of the present invention.

Claims

1. The utility model provides an install cryogenic valve on vertical pipe, is including installing valve body (1), valve gap (7) and valve rod (4) in vertical pipe (A), its characterized in that: the valve body (1) is Y-shaped, the valve rod (4) and the valve cover (7) incline 45 degrees relative to a vertical pipeline (A), the lower end of the valve body (1) is an inlet end, the upper end of the valve body (1) is an outlet end and a right side port respectively, the valve body (1) and the valve cover (7) are fixedly connected through a nut and a stud, a valve seat (1-1) extends in an inclined mode towards the outlet end in the cavity of the valve body (1), a valve clack (2) is arranged on the valve seat (1-1), the valve clack (2) is connected with a valve clack gland (3) through threads, the valve rod (4) penetrates through the valve cover (7) to extend to the valve body (1) and penetrates through the valve clack gland (3) to be connected with the valve clack (2), a sealing ring (7-1) is arranged on the inner wall of the upper end of the valve cover (7), and a packing pad (10) and a packing are sequentially arranged on the upper end of the sealing ring (7-1), The packing gland (13) is fixedly connected with the valve cover (7) through a cylindrical pin (14), an eyelet bolt (15) and a thick nut, and a disc spring is arranged between the thick nut and the packing gland (13).

2. A cryogenic valve for installation in a vertical duct according to claim 1, wherein: and a winding gasket (5) is arranged between the valve cover (7) and the valve body (1).

3. A cryogenic valve for installation in a vertical duct according to claim 1, wherein: a bearing seat (8) is welded at the lower end channel of the valve cover (7), a bearing is arranged on the bearing seat (8), and the valve rod (4) penetrates through the bearing.

4. A vertical duct mounted cryogenic valve as claimed in claim 1, wherein: the outer wall of the valve rod (4) is provided with a sealing surface, and an upper sealing pair is formed by the sealing surface at the lower end of the sealing ring (7-1) and the sealing surface of the valve rod (4).

5. A cryogenic valve for installation in a vertical duct according to claim 3, wherein: the valve body (1) is integrally formed with a reinforcing rib (1-2) which is fixedly connected with the valve seat (1-1).

6. A cryogenic valve for installation in a vertical duct according to claim 3, wherein: the upper end of the valve rod (4) penetrates through a valve rod nut (16) and is fixedly connected with a hand wheel (19).

7. A cryogenic valve for installation in a vertical duct according to claim 1, wherein: the outer wall of the upper end of the valve rod (4) is provided with a scale plate (17) and an indicating cover (18).