CN101162049A - High-purity pressure gas valve - Google Patents
High-purity pressure gas valve Download PDFInfo
- Publication number
- CN101162049A CN101162049A CNA200710177778XA CN200710177778A CN101162049A CN 101162049 A CN101162049 A CN 101162049A CN A200710177778X A CNA200710177778X A CN A200710177778XA CN 200710177778 A CN200710177778 A CN 200710177778A CN 101162049 A CN101162049 A CN 101162049A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- rod
- pressure gas
- 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.)
- Pending
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The invention provides a high purity high pressure gas valve which is applicable to special gas industry and high purity, high pressure and toxic gas industry. The invention comprises a reverse T-shaped valve body with a gas channel, a valve rod and a cylindrical valve cover, wherein, the valve rod consists of an upper valve rod and a lower valve rod which are connected with each other and can relatively rotate; a bottom end of the lower valve rod is fixed with a gasket; an upper end of the valve cover is connected with the upper valve rod through a thread, a lower end of the valve cover is fixed with a vertical part of the valve body; a casing is covered outside the lower valve rod and limited by a shoulder of the valve cover; a seal ring is arranged between the casing and the lower valve rod; a sealing gasket is arranged between the casing and the valve cover. As the valve rod in the invention adopts the two-segment design of the upper valve rod and the lower valve rod, the lower valve rod only moves up and down to avoid rotation during the process of valve starting and closing, thereby improving dynamic environment of bellows, and reducing abrasion. The invention not only can guarantee the seal performance of the valve, and prevent leakage, but also is beneficial to prolong the service life of the valve.
Description
Technical field
The present invention relates to a kind of gas valve, particularly a kind of high-purity pressure gas valve that is applicable to special gas industry and high-purity, high pressure, toxic gas industry.
Background technique
Deep development along with domestic electronics industry, biotechnology, military project biochemistry, produce and use and all require to use high-quality gas, domestic demand to other ultra-pure gas of special gas and 99.9999% (V/V) purity higher level is constantly enlarging fast, internationally recognizable gas companies is in the extensive layout of China, produce desired gas, do not carry out the systematic research development in this respect so far but take a broad view of the domestic valve that matches, very big with external gap.If adopt the valve of present domestic production supporting, no matter which kind of other industrial gas of level fills and enters gas cylinder or after pipeline enters process system, because of valve mass does not meet international norm, its quality assurance all becomes unknown number, pollute for the second time and will certainly produce, for special gas and high-purity gas, the cost of purification is very high, even air also becomes pollutant, in case contaminated loss is very big.Research and development for this type of valve become urgent demand of domestic valve industry.
Industrial special gas enters gas cylinder, pressure mostly is 16～25Mpa greatly, valve for high malleation like this, the negative pressure that will accept to vacuumize also, conventional high pressure valve can't meet the demands at all, and the inventor has invented a kind of valve that adapts to special gas and high-purity gas through exploring for a long time and research, solved the difficult problem of the long-term dependence on import of domestic special gas industry, filled the domestic gaps.
Summary of the invention
The technical problem that solves
The objective of the invention is at above-mentioned the deficiencies in the prior art, a kind of high-purity pressure gas valve that is applicable to special gas industry and high-purity, high pressure, toxic gas industry is provided.
Technological scheme
For achieving the above object, the present invention adopts following technological scheme:
High-purity pressure gas valve of the present invention comprises valve body, valve rod and valve gap, and wherein said valve body is inverted T-shaped, is provided with gas channel in the horizontal component, and vertically part is cylindric; Described valve gap is a cylindrical shape; Described valve rod is arranged in the valve gap, by upper valve rod be connected upper valve rod bottom and can forming relative to the lower valve rod that upper valve rod rotates; The bottom of lower valve rod is fixed with sealing gasket, and the fixedly connected drive unit in the upper end portion of upper valve rod, the upper end portion of valve gap and upper valve rod are by being threaded, and fixedlys connected with the vertical part of valve body in the underpart; The lower valve rod outside is set with overcoat, and overcoat is spacing by the shoulder of valve gap, between overcoat and lower valve rod seal ring is housed, and is provided with gasket seal between overcoat and the valve gap.
Wherein also comprise being sleeved on the outer metal bellows of lower valve rod, the top of this metal bellows is fixing on the coat, and the bottom is fixed on the lower valve rod.
Described gas channel is provided with a boss with the sealing gasket cooperating.
The bottom of described lower valve rod is provided with groove, and described sealing gasket is fixed in the groove.
Described valve gap underpart is threaded with lower valve rod, and by pin the two relative position is fixed.
Described valve gap is provided with and detects the hole, detects in the hole and is provided with plug screw, and establish seal ring between plug screw and valve gap.
Beneficial effect
The advantage and the good effect of high-purity pressure gas valve of the present invention are: the two-piece design that adopts upper valve rod and lower valve rod among the present invention owing to valve rod, make in the opening and closing process of valve, lower valve rod only moves up and down, avoided rotation, thereby improved the dynamic environment of bellows, wearing and tearing are alleviated, not only be beneficial to the sealability that guarantees valve, prevent to leak, and be beneficial to the working life that prolongs valve.So valve of the present invention can be applicable to special gas industry and high-purity, high pressure, toxic gas industry.
Description of drawings
Fig. 1 is a high-purity pressure gas valve of the present invention structural representation in off position;
Fig. 2 is the structural representation of high-purity pressure gas valve of the present invention in opening state;
Fig. 3 is that A among Fig. 1 is to view.
Wherein: 1, valve body; 2, valve gap; 3, upper valve rod; 4, lower valve rod; 5, handwheel; 6, sealing gasket; 7, gas-entered passageway; 8, outlet passageway; 9, pin; 10, pad; 11, overcoat; 12, gasket seal; 13, metal bellows; 14, plug screw.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
As Fig. 1, Fig. 2 and shown in Figure 3, high-purity pressure gas valve of the present invention comprises the T-shaped valve body in cross section 1, tubular valve gap 2 and valve rod.Wherein be provided with the gas-entered passageway 7 and the outlet passageway 8 that are interconnected in the horizontal component of inverted T-shaped valve body 1, vertically part is cylindric.Described valve rod is made up of upper valve rod 3 and lower valve rod 4.The tip portion of upper valve rod 3 is equipped with handwheel 5, and the bottom is provided with notched level hook.Handwheel 5 also can other drive unit replace, as fluid pressure drive device, pneumatic actuating device, Vidacare corp etc.The tip portion of lower valve rod 4 is provided with the mounting part, and this mounting part can enter the level hook by breach, thereby upper and lower valve rod is hooked together, and can relatively rotate.The bottom of lower valve rod 4 is provided with groove, and the groove internal fixation has rubber gasket 6, is used for shutoff gas-entered passageway 7.Because rubber gasket 6 is arranged in the groove of lower valve rod, helps alleviating wearing and tearing, increases the service life.Outlet passageway 8 is horizontally disposed, and gas-entered passageway 7 comprises horizontal component and vertical part, is arranged with the boss with rubber gasket 6 cooperatings in the vertical portion, and it is tighter that the effect of boss is to make valve to seal when closing.
For being threaded, fixedly connected between bottom and the lower valve rod 4 between the top of tubular valve gap 2 and the upper valve rod 3.For easy to assembly, bonnet lower divided be threaded, and then the two relative position be fixed with pin 9 with lower valve rod 4.Between valve gap 2 and upper valve rod 3, be provided with O-ring seals.Lower valve rod 4 outsides are set with pad 10 and overcoat 11.Overcoat 11 is spacing by the shoulder of valve gap 2.Between overcoat 11 and the lower valve rod 4 O-ring seals is housed, is provided with gasket seal 12 between overcoat 11 and the valve gap 2.On valve gap 2, be provided with and detect the hole, detect in the hole and be provided with plug screw 14, and between plug screw 14 and valve gap 2, establish seal ring.The plug screw that detects the hole of outwarding winding do not influence the proper functioning of valve during detection yet,, need not, as long as can be found by any specialized equipment, instrument if any leakage.Also comprise the metal bellows 13 that is sleeved on outside the lower valve rod 4 among the present invention, the top of this metal bellows 13 is fixed on the overcoat 11, and the bottom is welded on the lower valve rod 4.Metal bellows 13 is by alloy material, and repressed one-tenth forms, and can stretch.Fixing metal bellows 13 can be made overcoat 11 " worker " font for convenience, and other shapes also can certainly.
The working procedure of high-purity pressure gas valve of the present invention is: turn handwheel 5 with hand, the upper valve rod 3 of fixedlying connected with it rotates thereupon, again because upper valve rod 3 is to be threaded with valve gap 2, so upper valve rod 3 moves up and down with respect to valve gap simultaneously, and then drive lower valve rod 4 and move up and down, make the rubber gasket 6 of lower valve rod 4 bottoms open or close gas channel.In above-mentioned course of action, because lower valve rod 4 is rotary with respect to upper valve rod, so it moves up and down and does not rotate, so just, improve the dynamic environment of bellows, wearing and tearing are alleviated, not only be beneficial to the sealability that guarantees between lower valve rod 4 and the overcoat 11, prevent to leak, and prolong the working life of valve.
Among the present invention owing to adopted metal bellows 13; move up and down in the process at lower valve rod 4; metal bellows 13 elongates or shortens thereupon; medium is thoroughly cut off with extraneous; can guarantee that the stem packing sealing part realizes zero leakage fully in the overall process of its use; prevented the loss of pipeline medium, and the more important thing is and protected environment and personnel to preserve from.
Adaptation special gas and the high-purity gas valve that has bellows of the present invention solved the difficult problem of the long-term dependence on import of domestic special gas industry high pressure Bellows valve, filled up domestic blank.
Claims (6)
1. a high-purity pressure gas valve comprises valve body (1), valve rod and valve gap (2), it is characterized in that described valve body (1) is inverted T-shaped, is provided with gas channel in the horizontal component, and vertically part is cylindric; Described valve gap (2) is a cylindrical shape; Described valve rod is arranged in the valve gap (2), by upper valve rod (3) be connected upper valve rod (3) bottom and can forming relative to the lower valve rod (4) that rotate upper valve rod (3); The bottom of lower valve rod (4) is fixed with sealing gasket (6), and the fixedly connected drive unit in upper end portion of upper valve rod (3), the upper end portion of valve gap (2) and upper valve rod (3) are by being threaded, and fixedlys connected with the vertical part of valve body (1) in the underpart; Lower valve rod (4) outside is set with overcoat (11), and overcoat (11) is spacing by the shoulder of valve gap (2), between overcoat (11) and lower valve rod (4) seal ring is housed, and is provided with gasket seal (12) between overcoat (11) and the valve gap (2).
2. high-purity pressure gas valve as claimed in claim 1 is characterized in that also comprising being sleeved on the outer metal bellows (13) of lower valve rod (4) that the top of this metal bellows (13) is fixed on the overcoat (11), and the bottom is fixed on the lower valve rod (4).
3. high-purity pressure gas valve as claimed in claim 2 is characterized in that described gas channel is provided with a boss with sealing gasket (6) cooperating.
4. high-purity pressure gas valve as claimed in claim 3 is characterized in that the bottom of described lower valve rod (4) is provided with groove, and described sealing gasket (6) is fixed in the groove.
5. high-purity pressure gas valve as claimed in claim 4 is characterized in that described valve gap (2) underpart is threaded with lower valve rod (4), and by pin (9) the two relative position is fixed.
6. as the arbitrary described high-purity pressure gas valve of claim 1-5, it is characterized in that described valve gap (2) is provided with the detection hole, detects in the hole and is provided with plug screw (14), and establish seal ring between plug screw (14) and valve gap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710177778XA CN101162049A (en) | 2007-11-21 | 2007-11-21 | High-purity pressure gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710177778XA CN101162049A (en) | 2007-11-21 | 2007-11-21 | High-purity pressure gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101162049A true CN101162049A (en) | 2008-04-16 |
Family
ID=39297018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710177778XA Pending CN101162049A (en) | 2007-11-21 | 2007-11-21 | High-purity pressure gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101162049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973674A (en) * | 2019-04-22 | 2019-07-05 | 浙江新涛智控科技股份有限公司 | Fuel gas plug valve |
-
2007
- 2007-11-21 CN CNA200710177778XA patent/CN101162049A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973674A (en) * | 2019-04-22 | 2019-07-05 | 浙江新涛智控科技股份有限公司 | Fuel gas plug valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202252039U (en) | Stop valve of liquid chlorine fluorine corrugated pipe | |
| CN201096198Y (en) | High purity high pressure gas valve | |
| CN201884690U (en) | Super-high pressure flat plate gate valve | |
| CN203363251U (en) | Fixed ball valve installed on double balls | |
| CN102094987A (en) | Ultrahigh pressure flat plate gate valve | |
| CN101162049A (en) | High-purity pressure gas valve | |
| CN103939619A (en) | Modular differential-pressure bottle valve | |
| CN102734473A (en) | Rotational-free self-sealing valve | |
| CN101655159A (en) | Full-seal zero-leakage stop valve | |
| CN201121729Y (en) | Tank bottom discharge valve | |
| CN207935463U (en) | The hard seal gate valve of air-conditioning HVAC system wedge-type | |
| CN206846316U (en) | A kind of oil-gas pipeline corrosion lacing film suspension arrangement | |
| CN206246731U (en) | Three-way control valve | |
| CN206274086U (en) | A kind of air operated reversing valve | |
| CN203718129U (en) | High-sealing-performance ammonia stop valve | |
| CN100464096C (en) | Replaceable valve of dual-sealing ring | |
| CN113915367A (en) | Novel low-leakage ball valve | |
| CN201487240U (en) | Full sealed zero leakage stop valve | |
| CN202790875U (en) | High-tightness gate valve | |
| CN207112014U (en) | Built-in opening and closing gate valve with anti-interference function | |
| CN2603881Y (en) | Oblique plane stop valve | |
| CN204175970U (en) | Stop valve | |
| CN2927018Y (en) | Valve-lever sealing structure of pressure gage valve | |
| CN2809357Y (en) | High and middle pressure corrugated pipe stop valve | |
| CN201487265U (en) | Full sealed zero leakage gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |