CN103410989A - Liquefied dimethyl ether cylinder valve - Google Patents
Liquefied dimethyl ether cylinder valve Download PDFInfo
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- CN103410989A CN103410989A CN201310323228XA CN201310323228A CN103410989A CN 103410989 A CN103410989 A CN 103410989A CN 201310323228X A CN201310323228X A CN 201310323228XA CN 201310323228 A CN201310323228 A CN 201310323228A CN 103410989 A CN103410989 A CN 103410989A
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- valve
- dimethyl ether
- valve body
- liquefied dimethyl
- cylinder
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Abstract
The invention relates a steel cylinder, in particular to a liquefied dimethyl ether cylinder valve applied to a canned liquefied dimethyl ether steel cylinder. The cylinder valve comprises a valve body, a valve assembly and a valve rod, wherein a gas source port is formed in one end of the valve body, a gas outlet is formed in one side of the valve body, the valve assembly is arranged in an internal cavity in a position, communicated with the gas outlet, in the middle of the valve body, the valve rod matched with the valve assembly for positioning is arranged above the valve assembly, and the valve rod is sleeved with a compression nut and a hand wheel sequentially. According to the liquefied dimethyl ether cylinder valve, a sealing washer is made of polytetrafluoroethylene, and an O-shaped sealing ring is made of FFKM perfluorinated rubber, so that dual leakage prevention is realized, and the sealing washer is effectively prevented from being corroded by dimethyl ether gas; plane hard sealing is performed by using identical lead brass materials between the compression nut and the valve body; and requirements for storage, transport and canning of the liquefied dimethyl ether are met.
Description
Technical field
The present invention relates to steel cylinder, particularly relate to for a kind of liquefied dimethyl ether cylinder valve on tanked liquefied dimethyl ether steel cylinder.
Background technique
Dimethyl ether DME(Dimethy1 Ether), be called for short methyl ether, molecular formula: C
2H
6O, molecular weight 46.07.Dimethyl ether is by two methyl molecules and synthetic the forming of oxygen atom, chemical structure is not bery stable, although chemical reaction does not occur in dimethyl ether and steel cylinder and copper valve, but dimethyl ether contains aerobic, has certain oxidability, chemical reaction can occur in the valve seal loop material (commonly used is butyronitrile rubber) of using with liquefied petroleum ga steel cylinder, causes " corrosion " of butyronitrile rubber and causes valve to leak gas.Dimethyl ether is a kind of organic compound, and liquefied dimethyl ether is a kind of solvent, and butyronitrile rubber is a kind of macromolecular material, and both have proximity, and according to the principle of organic compound " similar person mixes ", butyronitrile rubber can be dissolved in dimethyl ether.Its " dissolving " process is roughly as follows: liquefied dimethyl ether turns to solvent and immerses in the butyronitrile rubber body, rubber starts " swelling ", then rubber is by " dissolvings " accelerate ageing of rubber, final rubber " elastic failure " and lose sealability, thus cause the gas leakage of valve.The probability of valve for liquified petroleum gas cylinder gas leakage increases with the ratio of mixing dimethyl ether, and the time leaked air increases and shortens with the ratio of mixing dimethyl ether.So existing valve for liquified petroleum gas cylinder can not be for tanked liquefied dimethyl ether.
Gas of dimethyl ether has the chemical product similar with the physical property of LPG, when burning, can not produce the gas of welding, and have good burning performance, the thermal efficiency is high, in combustion process without residue, without black smoke, CO, NO discharge capacity are low, and production cheap and can be a large amount of, and one of energy become 21 century is supposed to.Dimethyl ether is liquefiable under normal temperature low pressure, volume dwindles greatly, and the pressure resistant vessel (as steel cylinder) that adopts pressure-bearing to seal is canned is feasible.After State General Administration for Quality Supervision sends " about the notice of cylinder filling relevant issues ", require storage, transportation, the canned link of dimethyl ether to accomplish " specially gas, specially bottle, special use ", so design a kind of liquefied dimethyl ether cylinder valve, it is industry technician problem demanding prompt solution.
Summary of the invention
Purpose of the present invention will provide a kind of liquefied dimethyl ether cylinder valve exactly, and it can overcome the problem that existing valve for liquified petroleum gas cylinder can not tanked liquefied dimethyl ether.The object of the present invention is achieved like this, a kind of liquefied dimethyl ether cylinder valve, comprise valve body, valve assembly parts, valve rod, it is characterized in that: described valve body one end is provided with the source of the gas mouth, one side is provided with air outlet, in the inner chamber at valve body middle part and the place of communicating, air outlet, be provided with the valve assembly parts, the top of valve assembly parts is provided with the valve rod that matches with it and locate, and overlaps clamping nut, anti-attrition sheet and handwheel are arranged successively on valve rod.
The inner chamber of described clamping nut and valve rod contacting point are disposed with seal washer, O RunddichtringO from bottom to up, the outside thread on clamping nut and the engagement of the internal thread on valve body.
The inner chamber of described handwheel and valve rod contacting point are provided with spring, and are locked by the spring pressure cap.
What described O RunddichtringO adopted is the perfluoroelastomers material.
What described seal washer adopted is polytetrafluoroethylmaterial material.
What described clamping nut and valve body adopted is the lead brass material.
Seal washer of the present invention has adopted teflon, and what the O RunddichtringO adopted is perfluoroelastomers, dual anti-leak not only, and effectively prevented the corrosion of gas of dimethyl ether to seal washer.Between clamping nut and valve body, adopted identical lead brass material to carry out plane hard seals.Meet State General Administration for Quality Supervision and send " about the notice of cylinder filling relevant issues ", met the storage, transportation of liquefied dimethyl ether, canned requirement.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
1. valve body, 2. valve assembly parts, 3. valve rod, 4. seal washer, 5.O RunddichtringO, 6. clamping nut, 7. anti-attrition sheet, 8. handwheel, 9. spring, 10. spring pressure cap.
Embodiment
The invention will be further described below in conjunction with accompanying drawing;
A kind of liquefied dimethyl ether cylinder valve, comprise valve body 1, valve assembly parts 2, valve rod 3, it is characterized in that: described valve body 1 one ends are provided with the source of the gas mouth, one side is provided with air outlet, in the inner chamber at valve body 1 middle part and the place of communicating, air outlet, be provided with valve assembly parts 2, the valve rod 3 that the top of valve assembly parts 2 is provided with the location of matching with it, overlap clamping nut 6, anti-attrition sheet 7 and handwheel 8 arranged successively on valve rod 3.
The inner chamber of described clamping nut 6 and valve rod 3 contacting points are disposed with seal washer 4, O RunddichtringO 5 from bottom to up, the internal thread engagement on the outside thread on clamping nut 6 and valve body 1.
The inner chamber of described handwheel 8 and valve rod 3 contacting points are provided with spring 9, and by 10 lockings of spring pressure cap.
What described O RunddichtringO 5 adopted is perfluoroelastomers.
What described seal washer 4 adopted is teflon.
Described clamping nut 6 is the lead brass material with valve body 1 employing.
During concrete enforcement, height overall of the present invention is 112mm ± 2mm, and valve body air outlet internal thread is the M22mmX1.5mm-6H left hand thread; Valve body source of the gas interface external thread is the special-purpose tapered tread PZ27.8mm of gas cylinder; What valve body, valve rod, clamping nut adopted is HPb59-1 lead brass material; What spring pressure cap, handwheel adopted is the ZL102 casting aluminium material; What the O RunddichtringO adopted is perfluoroelastomers, and what seal washer adopted is teflon, all has the performance of dimethyl ether resistant.The present invention by Q/MQB02-2008 " liquefied petroleum gas cylinder valve " design, manufacture, test and acceptance.Be that nominal operating pressure is not more than the start-stop device of using on the liquefied dimethyl ether steel cylinder of 2.5MPa, be applicable to operating temperature-40 ~ 60 ℃.Handwheel counterclockwise rotates to be unlatching, Lift>1/4 latus rectum.Under nominal operating pressure, close or any opening state, without leaking.Under 0.05MPa pressure, any opening state, without leaking.Under 5 times of nominal operating pressures, valve body is without leaking and visible distortion.During assembling, relatively rotate position and scribble lubricating grease.
Claims (6)
1. a kind of liquefied dimethyl ether cylinder valve, comprise valve body (1), valve assembly parts (2), valve rod (3), it is characterized in that: described valve body (1) one end is provided with the source of the gas mouth, one side is provided with air outlet, in the inner chamber at valve body (1) middle part and the place of communicating, air outlet, be provided with valve assembly parts (2), the valve rod (3) that the top of valve assembly parts (2) is provided with the location of matching with it, overlap clamping nut (6), anti-attrition sheet (7) and handwheel (8) arranged successively on valve rod (3).
2. a kind of liquefied dimethyl ether cylinder valve according to claim 1, it is characterized in that: the inner chamber of described clamping nut (6) and valve rod (3) contacting point are disposed with seal washer (4), O RunddichtringO (5) from bottom to up, the internal thread engagement on the outside thread on clamping nut (6) and valve body (1).
3. a kind of liquefied dimethyl ether cylinder valve according to claim 1, it is characterized in that: the inner chamber of described handwheel (8) and valve rod (3) contacting point are provided with spring (9), and are locked by spring pressure cap (10).
4. a kind of liquefied dimethyl ether cylinder valve according to claim 2 is characterized in that: what described O RunddichtringO (5) adopted is perfluoroelastomers.
5. a kind of liquefied dimethyl ether cylinder valve according to claim 2 is characterized in that: what described seal washer (4) adopted is teflon.
6. according to claim 1,2 described a kind of liquefied dimethyl ether cylinder valves, it is characterized in that: described clamping nut (6) is the lead brass material with valve body (1) employing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310323228XA CN103410989A (en) | 2013-07-30 | 2013-07-30 | Liquefied dimethyl ether cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310323228XA CN103410989A (en) | 2013-07-30 | 2013-07-30 | Liquefied dimethyl ether cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103410989A true CN103410989A (en) | 2013-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310323228XA Pending CN103410989A (en) | 2013-07-30 | 2013-07-30 | Liquefied dimethyl ether cylinder valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103410989A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676096A (en) * | 2015-03-10 | 2015-06-03 | 宁波金佳佳阀门有限公司 | Liquefied dimethyl ether cylinder valve |
| CN105570471A (en) * | 2016-01-08 | 2016-05-11 | 上海上芃电气有限公司 | Sulfur hexafluoride gas valve of novel needle valve structure |
| CN110785596A (en) * | 2017-06-23 | 2020-02-11 | 国际工程控制公司 | Low temperature tank control system, stop valve and solenoid valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386793Y (en) * | 2009-04-08 | 2010-01-20 | 扬州市安宜阀门有限公司 | Dimethyl ether non-removable cylinder valve |
| CN201982690U (en) * | 2011-03-10 | 2011-09-21 | 扬州市安宜阀门有限公司 | Dimethyl ether self-sealing cylinder valve |
| CN102808955A (en) * | 2012-07-31 | 2012-12-05 | 孙家驹 | Dimethyl-ether-resistant steel cylinder valve |
-
2013
- 2013-07-30 CN CN201310323228XA patent/CN103410989A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386793Y (en) * | 2009-04-08 | 2010-01-20 | 扬州市安宜阀门有限公司 | Dimethyl ether non-removable cylinder valve |
| CN201982690U (en) * | 2011-03-10 | 2011-09-21 | 扬州市安宜阀门有限公司 | Dimethyl ether self-sealing cylinder valve |
| CN102808955A (en) * | 2012-07-31 | 2012-12-05 | 孙家驹 | Dimethyl-ether-resistant steel cylinder valve |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局，中国国家标准化管理委员会: "《GB7512-2006 液化石油气瓶阀》", 19 July 2006, article "中华人民共和国国家标准" * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676096A (en) * | 2015-03-10 | 2015-06-03 | 宁波金佳佳阀门有限公司 | Liquefied dimethyl ether cylinder valve |
| CN105570471A (en) * | 2016-01-08 | 2016-05-11 | 上海上芃电气有限公司 | Sulfur hexafluoride gas valve of novel needle valve structure |
| CN110785596A (en) * | 2017-06-23 | 2020-02-11 | 国际工程控制公司 | Low temperature tank control system, stop valve and solenoid valve |
| US11592120B2 (en) | 2017-06-23 | 2023-02-28 | Engineered Controls International, Llc | Cryogenic cylinder control system, globe valve, and solenoid valve |
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Application publication date: 20131127 |