CN204828761U - Valve rod of nickel alloy low temperature ball valve - Google Patents
Valve rod of nickel alloy low temperature ball valve Download PDFInfo
- Publication number
- CN204828761U CN204828761U CN201520622751.7U CN201520622751U CN204828761U CN 204828761 U CN204828761 U CN 204828761U CN 201520622751 U CN201520622751 U CN 201520622751U CN 204828761 U CN204828761 U CN 204828761U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- nickel alloy
- gland
- gap
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a valve rod of nickel alloy low temperature ball valve, including the valve gap and installing the valve rod at the valve gap inner chamber, the upper end department of valve gap is fixed with the installing support, and stretch out its upper end of valve rod the installing support terminal surface is as the control end, valve gap the inner be provided with inside bellied bulge loop, the valve rod include that upper valve rod and diameter are greater than the lower valve rod of upper valve rod, install down seal gasket between the lower terminal surface of this bulge loop and the up end of lower valve rod, install sealing washer, combined packing, sealed damaging by pressure and gland between upper valve rod and the valve gap, the up end of bulge loop has been from up having placed foretell sealing washer, combined packing, sealed crusing by pressure and gland down in proper order, the last connecting piece that is provided with of gland, through this connecting piece with installing support cooperation fixed, connecting piece and gland between be provided with telescopic belleville spring. Have following characteristics: adopted four not the sealing technique of isostructure guaranteed the stem seal performance.
Description
Technical field
The utility model relates to a kind of ball valve of Langaloy material, particularly a kind of valve rod of nickel alloy cryogenic ball valve.
Background technique
Valve rod is valve vitals, for transmission, Shang Jie actuator or handle, below directly band movable valve plug move or rotate, to realize valve switch or regulating action, valve rod is easily damaged parts, and existing ball valve generally comprises valve body, valve rod, valve seat and spheroid.Valve body offers transfer passage and installs passage, transfer passage and installation passages intersect, valve ball is arranged on transfer passage and installs the intersection of passage and center offers diameter and the suitable through hole of transfer passage diameter, valve rod is arranged in be installed in passage and one end and valve ball are connected, the other end is usually connected with the driving mechanism of the actuate valve stem axial rotation such as spanner etc. or handle, and valve seat is located between valve ball and valve body and valve ball can opposite valve seat rotation.
Ball valve is opening and closing in process, spheroid and valve seat owing to there being relative movement, when ball valve being used for transportation of liquefied gas etc., when it is in closed condition, the endoceliac liquid gas of valve body accumulated between valve seat can gasify in a large number because absorbing external heat, causes the abnormal rising of body intracavity pressure.This abnormal boosting phenomenon may cause valve body to explode, or it is external that valve rod is gone out, and leads to a disaster.
Easily appear at valve rod in the process of break-make liquid stream between valve rod and valve gap often to produce with valve seat and rub simultaneously at present; As time goes on will wear and tear to a great extent or filler of grinding away; sealing and the working life of valve entirety can be reduced so accordingly; in order to ensure the normal use of valve, can only replace the parts such as Sealing needs the cost that waste is very large.
Model utility content
The purpose of this utility model provides a kind of long service life to solve above-mentioned the deficiencies in the prior art, have the valve rod of multi-sealed a kind of nickel alloy cryogenic ball valve.
To achieve these goals, the valve rod of a kind of nickel alloy cryogenic ball valve designed by the utility model, comprise valve gap and be arranged on the valve rod of valve gap inner chamber, the upper end of valve gap is fixed with mounting bracket, described mounting bracket end face is stretched out as control end in its upper end of valve rod, it is characterized in that: described valve gap the inner is provided with inwardly protruded bulge loop, described valve rod comprises the lower valve rod that upper valve rod and diameter are greater than upper valve rod, back seal pad is installed between the lower end surface of this bulge loop and the upper-end surface of lower valve rod, between upper valve rod and valve gap, seal ring is installed, combined packing, sealing is damaged by pressure and Gland, the upper-end surface of described bulge loop is placed with above-mentioned seal ring from the bottom up successively, combined packing, sealing is damaged by pressure and Gland, Gland is provided with link, coordinate fixing with described mounting bracket by this link, telescopic compress gasket is provided with between described link and Gland.
Preferably, described lower valve rod lower end is processed with the relief hole of connecting valve cover cavity and valve flowing channel.
Preferably, the upper-end surface of described mounting bracket is provided with for the retaining pad of valve rod deadweight supporting and the snap ring for valve rod deadweight supporting, retaining pad is arranged on the upper-end surface of mounting bracket, and snap ring is arranged on described retaining pad upper end.
Preferably, described valve gap is nickel alloy valve gap.
The valve rod of a kind of nickel alloy cryogenic ball valve that the utility model obtains, there is following characteristics: valve rod not still movement parts in valve opening and closing process, stressed member, and be Sealing, simultaneously, it is subject to impact and the corrosion of medium, also produce with filler and rub, and the sealing technique that this practicality have employed four road different structures ensure that valve stem seal performance, valve rod upper end is provided with deadweight supporting structure, extension valve rod deadweight can be placed produce extra downforce to spheroid and affect valve seal performance, set relief hole simultaneously, effectively to release the abnormal pressure of valve gap lumen, this valve rod, valve gap its adopt nickel alloy to have good impact toughness, resistance to marring, corrosion resistance.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is partial enlarged drawing in Fig. 1.
In figure: back seal pad 1, seal ring 2, combined packing 3, sealing damage 4 by pressure, compress gasket 5, retaining pad 6, snap ring 7, relief hole 8, valve rod 9, valve gap 10, link 11, Gland 12.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment:
As Fig. 1, shown in Fig. 2, the valve rod of a kind of nickel alloy cryogenic ball valve that the utility model provides, comprise valve gap 10 and be arranged on the valve rod 9 of valve gap inner chamber, the upper end of valve gap 10 is fixed with mounting bracket 13, described mounting bracket 13 end face is stretched out as control end in its upper end of valve rod 9, described valve gap 10 the inner is provided with inwardly protruded bulge loop 14, described valve rod 9 comprises the lower valve rod that upper valve rod and diameter are greater than upper valve rod, back seal pad 1 is installed between the lower end surface of this bulge loop and the upper-end surface of lower valve rod, seal ring 2 is installed between upper valve rod and valve gap, combined packing 3, 4 and Gland 12 are damaged in sealing by pressure, the upper-end surface of described bulge loop is placed with above-mentioned seal ring 2 from the bottom up successively, combined packing 3, 4 and Gland 12 are damaged in sealing by pressure, Gland 12 is provided with link 11, link comprises the link such as screw rod or screw, coordinate fixing with described mounting bracket 13 by this link 11, telescopic compress gasket 5 is provided with between described link and Gland.
Further, described lower valve rod lower end is processed with the relief hole 8 of connecting valve cover cavity and valve flowing channel, and particularly, relief hole one end open is arranged at described valve gap inner chamber, and the other end opening is arranged on the bottom of valve rod.
Further, the upper-end surface of described mounting bracket is provided with for the retaining pad 6 of valve rod deadweight supporting and the snap ring 7 for valve rod deadweight supporting, retaining pad 6 is arranged on the upper-end surface of mounting bracket 13, snap ring 7 is arranged on described retaining pad 6 upper end, this setting is mainly valve rod upper end and is provided with deadweight supporting structure, extension valve rod deadweight can be placed produce extra downforce to spheroid and affect valve seal performance
Further, described valve gap is nickel alloy valve gap, this valve rod, valve gap its adopt nickel alloy to have good impact toughness, resistance to marring, corrosion resistance.
The valve rod of a kind of nickel alloy cryogenic ball valve that the utility model obtains, there is following characteristics: valve rod not still movement parts, stressed member in valve opening and closing process, and be Sealing, simultaneously, it is subject to impact and the corrosion of medium, also produce with filler and rub, and the sealing technique that this practicality have employed four road different structures ensure that valve stem seal performance, set relief hole, the abnormal pressure of valve gap lumen of effectively releasing simultaneously.
For the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; its framework form can be flexible and changeable; just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that claims of being submitted to by the utility model are determined.
Claims (5)
1. the valve rod of a nickel alloy cryogenic ball valve, comprise valve gap and be arranged on the valve rod of valve gap inner chamber, the upper end of valve gap is fixed with mounting bracket, described mounting bracket end face is stretched out as control end in its upper end of valve rod, it is characterized in that: described valve gap the inner is provided with inwardly protruded bulge loop, described valve rod comprises the lower valve rod that upper valve rod and diameter are greater than upper valve rod, back seal pad is installed between the lower end surface of this bulge loop and the upper-end surface of lower valve rod, between upper valve rod and valve gap, seal ring is installed, combined packing, sealing is damaged by pressure and Gland, the upper-end surface of described bulge loop is placed with above-mentioned seal ring from the bottom up successively, combined packing, sealing is damaged by pressure and Gland, Gland is provided with link, coordinate fixing with described mounting bracket by this link, telescopic compress gasket is provided with between described link and Gland.
2. the valve rod of a kind of nickel alloy cryogenic ball valve according to claim 1, is characterized in that: described lower valve rod lower end is processed with the relief hole of connecting valve cover cavity and valve flowing channel.
3. the valve rod of a kind of nickel alloy cryogenic ball valve according to claim 1 and 2, it is characterized in that: the upper-end surface of described mounting bracket is provided with for the retaining pad of valve rod deadweight supporting and the snap ring for valve rod deadweight supporting, retaining pad is arranged on the upper-end surface of mounting bracket, and snap ring is arranged on described retaining pad upper end.
4. the valve rod of a kind of nickel alloy cryogenic ball valve according to claim 1 and 2, is characterized in that: described valve gap is nickel alloy valve gap.
5. the valve rod of a kind of nickel alloy cryogenic ball valve according to claim 3, is characterized in that: described valve gap is nickel alloy valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520622751.7U CN204828761U (en) | 2015-08-19 | 2015-08-19 | Valve rod of nickel alloy low temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520622751.7U CN204828761U (en) | 2015-08-19 | 2015-08-19 | Valve rod of nickel alloy low temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828761U true CN204828761U (en) | 2015-12-02 |
Family
ID=54686364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520622751.7U Expired - Fee Related CN204828761U (en) | 2015-08-19 | 2015-08-19 | Valve rod of nickel alloy low temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973667A (en) * | 2019-03-29 | 2019-07-05 | 成都成高阀门有限公司 | A kind of liquefied natural gas deep cooling butterfly valve |
-
2015
- 2015-08-19 CN CN201520622751.7U patent/CN204828761U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973667A (en) * | 2019-03-29 | 2019-07-05 | 成都成高阀门有限公司 | A kind of liquefied natural gas deep cooling butterfly valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205298375U (en) | Gas spring damping bumper shock absorber | |
| CN204828761U (en) | Valve rod of nickel alloy low temperature ball valve | |
| CN201306484Y (en) | Gas overflow protective device | |
| CN205315760U (en) | Formula of relying on oneself ball valve | |
| CN202927172U (en) | High-sealing air compressor safety valve | |
| CN206257336U (en) | A kind of safety chemical industry pipeline valve | |
| CN202790658U (en) | Valve seat of fixed ball valve | |
| CN204878769U (en) | High pressure gas piping butterfly valve | |
| CN204922080U (en) | High temperature ball valve | |
| CN101259821A (en) | Tyre explosion-proof equipment | |
| CN203979433U (en) | High-temperature metal seal butterfly valve | |
| CN210153239U (en) | Butterfly valve rod seal structure | |
| CN204062072U (en) | Low temperature Emergeny Cutoff Valves open in usual | |
| CN202629118U (en) | Ball screw gate valve | |
| CN201277338Y (en) | Special dismounting-free valve for sulfur hexafluoride gas | |
| CN205173504U (en) | Sylphon seal valve | |
| CN205207757U (en) | Simple and convenient online fixed ball valve of maintenance upper assembling type of changing | |
| CN219472895U (en) | Sealing ball valve | |
| CN103727276A (en) | High-seal air compressor safety valve | |
| CN203258100U (en) | Mounted-type ball valve capable of being dismounted and mounted on line and achieving two-way sealing | |
| CN205089983U (en) | Tap's high -pressure buffer | |
| CN206802323U (en) | One kind is without spring cylinder valve | |
| CN203671012U (en) | Self-sealing valve preventing sealing part from losing elasticity | |
| CN203463768U (en) | Diaphragm-type pneumatic actuator | |
| CN214789143U (en) | Metal elastic sheet sealing low-temperature ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |