CN2212688Y - Steel ball flap type high-pressure high-temp stop valve - Google Patents
Steel ball flap type high-pressure high-temp stop valve Download PDFInfo
- Publication number
- CN2212688Y CN2212688Y CN 95207105 CN95207105U CN2212688Y CN 2212688 Y CN2212688 Y CN 2212688Y CN 95207105 CN95207105 CN 95207105 CN 95207105 U CN95207105 U CN 95207105U CN 2212688 Y CN2212688 Y CN 2212688Y
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- valve
- steel ball
- flap
- valve body
- valve rod
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- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model relates to a steel ball flap type high-pressure high-temperature stop valve, comprising a valve cover, valve flap sleeve, a steel ball valve flap, a valve body, an adjusting bolt, valve rod, etc. The steel ball flap type high-pressure high-temperature stop valve is characterized in that the valve rod connects with the valve flap sleeve; the steel ball valve flap is nested in the inner cavity of the valve flap sleeve; one part of the steel ball valve flap is hermetically matched with the toroidal sealing face of the valve body; the valve body connects with a connecting nut, making the valve cover fix in the valve body; the relative position of the adjusting bolt and the valve rod can be regulated. Combinatorial fillers are filled in the toroidal inner cavity between the valve body and the valve rod, and the adjusting bolt and the valve rod. The stop valve has the advantages that the stop valve can be opened or closed repeatedly under the condition of high-temperature and high-pressure, and the stop valve can keep good sealability. The steel ball flap type high-pressure high-temperature stop valve is adaptable to wide application areas.
Description
The utility model relates to a kind of being installed on the instrument measurement pipeline, and particularly a kind of medium temperature that is used in reaches 570 ℃, and pressure is the steel ball flap type high pressure-temperature stop valve on the above instrumentation pipeline of 14Mpa.
Large-sized boiler, steam turbine, various high parameter at power plant various 250,000 kilowatts and above units help to change in the instrument measurement pipe-line system of equipment, and employed stop valve requires good airproof performance, open number of times should satisfy the overhaul life at least.And it is existing as " it is fixing tapered that stop valve shown in the valve products handbook (hydraulic and electric engineering publishing house, publish in October, 1989), flap adopt substantially, and sealing surface is identical with valve body material.Practice shows, this structure can not satisfy under the high-temperature and high-pressure conditions to be used, be particularly useful for the stop valve of pipeline blowdown, owing to the structure and material reason, after the valve blowdown opens and closes several times, under the effect of the high-temperature, high pressure fluid that passes through valve, just make the sealing surface of valve and flap place produce indentation, wreck the carrier performance variation; Cause spool, valve rod to leak, cause the instrument measurement misalignment, cause stopping accident, very big when serious producing influence.
The purpose of this utility model is to provide a kind of new stop valve structure and the material and the technology that adapt of structure therewith, overcomes the defective that exists in the above-mentioned prior art, stop valve is opened and closed under high-temperature and high-pressure conditions repeatedly still keep good sealing.
The purpose of this utility model realizes in the following way: a kind of steel ball flap type high pressure-temperature stop valve, it comprises handle (1), valve rod (2), adjust bolt (3), set screw nut (4), valve gap (5), flap cover (9), steel ball flap (10), valve body (12) and attaching nut (8), it is characterized in that described handle (1) for in-line and affixed with the upper end of valve rod (2) be a T font integral body, its lower end of described valve rod (2) pass valve gap (5) and be arranged on the flap cover (9) that a end in the valve body (12) is the closing in shape and be connected, its mantle cavity of described flap cover (9) is nested with steel ball flap (10), and expose to the steel ball flap (10) of flap cover (9) and annular sealing surface (11) the airtight cooperation of part of valve body (12), its upper end of described valve body (12) is connected with attaching nut (8) is fixed in the valve body (12) valve gap (5), described set screw nut (4) is threaded with the upper end of valve gap (5) and the fixing relative position of adjusting bolt (3) and valve rod (2), the annular cavity filling flexible graphite packing (7) that forms between its middle part of described valve gap (5) and the valve rod (2) is filled monel alloy (6) in the annular cavity of described adjustment bolt (3) formation between itself and valve rod (2).Adopt bead-welding technology in such scheme around the annular sealing surface of valve body, welding carbide reactor 802 is to strengthen sealing surface high temperature resistance high pressure performance of flushing; Flap adopts tungsten chromium cobalt steels ball, be embedded in the flap cover, can do Three dimensional rotation, the flap set upper side that connects together with valve rod is the closing in shape, and behind the valve opening, operation of nature is inboard in the valve body upper end, valve rod is carried out reverse rigidity sealing, packing seal mechanism constitutes combined packing by Expanded graphite and monel alloy, when the medium temperature fluctuation is big, by adjusting bolt the degree of tightness of combined packing is adjusted; Thereby realized the reliable sealing of spool and valve rod.
Owing to adopted such scheme, particularly adopted 802 hard alloy overlay welding smooth grinding technology of the nested structure of flap cover and steel ball flap and valve body annular sealing surface and adjusted the adjustment of bolt with respect to stem position, make this stop valve still can open and close under high-temperature and high-pressure conditions freely and also the overall tightness of valve remain at good state.
Fig. 1 is overall structure figure of the present utility model;
Fig. 2 is the A portion enlarged view of valve body annular sphere;
Among the figure: the 1-handle; The 2-valve rod; 3-adjusts bolt; The 4-set screw nut; The 5-valve gap; 6-Meng Naier filler; 7-Expanded graphite material; 8-attaching nut; 9-flap cover; 10-steel ball flap; 11-valve body annular sealing surface; The 12-valve body; 13,14-valve body media port.
By Fig. 1,2, it comprises handle 1 the utility model, valve rod 2, adjust bolt 3, set screw nut 4, valve gap 5, flap cover 9, steel ball flap 10, valve body 12 and attaching nut 8, it is characterized in that described handle 1 for in-line and affixed with the upper end of valve rod 2 be a T font integral body, described valve rod 2 its lower ends are passed valve gap 5 and are connected with flap cover 9 that a end in being arranged on valve body 12 is the closing in shape, described flap cover 9 its mantle cavities are nested with steel ball flap 10, and expose to airtight cooperation of annular sealing surface 11 parts of steel ball flap 10 with the valve body 12 of flap cover 9, described valve body 12 its upper ends are connected with attaching nut 8 is fixed in the valve body 12 valve gap 5, described set screw nut 4 is threaded with the upper end of valve gap 5 and the fixing relative position of adjusting bolt 3 and valve rod 2, the annular cavity filling flexible graphite packing 7 that forms between described valve gap 5 its middle parts and the valve rod 2 is filled monel alloy in the annular cavity of described adjustment bolt 3 formation between itself and valve rod 2.Annular sealing surface 11 its materials of above-mentioned valve body 12 adopt 802 cemented carbide and wear into the annular sealing surface of valve body 12 with its built-up welding lappingout.Above-mentioned steel ball flap 10 its materials are tungsten chromium cobalt.Above-mentioned flexible graphite packing 7 and monel alloy 6 can blend together combined packing.The relative position of above-mentioned adjustment bolt 3 itself and valve rod 12 can be regulated.When valve opening, rotatable handle 1, the flap 10 that is driven by valve rod 2 leaves valve body annular sealing surface 11, fluid from valve body 12 1 effluents to the other end.Because sealing surface adopted bead-welding technology, built-up welding 802, its hardness is to resist high not washing away of daybreak high-pressure medium; Flap 10 has adopted tungsten chromium cobalt steels ball, and has been embedded in the flap cover 9, because of its hardness very high, and when high-temperature high-pressure medium is flowed through, flap 10 is done and the equidirectional rotation of medium, thereby has avoided the rigid friction of fluid and flap 10 and the indentation that produces, has protected flap 10; Flap overlaps 9 upper ends and is closing in shape mating face and combines with valve body 12 upper end inwalls, formed rigidity sealing effect to valve rod 2, the combined packing that Meng Naier 6 and Expanded graphite 7 are formed, effectively valve rod 2 is sealed once more, its seal degree is adjusted definite according to the degree of fluctuation of medium temperature by the degree of tightness of adjusting bolt 3.Thereby guaranteed the reliable sealing at valve valve rod 2 places when opening.
Behind the valve closing, owing to adopted the valve body annular sealing surface 11 of built-up welding and adopted the flap 10 of tungsten chromium cobalt steels ball all not impaired because of fluid scouring, ball-type flap 10 has the function of automatic alignment again in addition, therefore, after valve rod 2 is fastened, valve can not produce leakage, thereby has realized the reliable sealing of spool.
Flap steel ball of the present utility model is made by tungsten chromium cobalt, sealing surface is formed by 802 material built-up welding, and filler is combined by Expanded graphite and monel alloy, and they all have good high temperature high voltage resistant, acid resistant alkali and wear-resisting property, so the good airproof performance of the utility model stop valve, the life-span is long.
Claims (5)
1, a kind of steel ball flap type high pressure-temperature stop valve, it comprises handle (1), valve rod (2), adjust bolt (3), set screw nut (4), valve gap (5), flap cover (9), steel ball flap (10), valve body (12) and attaching nut (8), it is characterized in that described handle (1) for in-line and affixed with the upper end of valve rod (2) be a T font integral body, its lower end of described valve rod (2) pass valve gap (5) and be arranged on the flap cover (9) that a end in the valve body (12) is the closing in shape and be connected, its mantle cavity of described flap cover (9) is nested with steel ball flap (10), and expose to the steel ball flap (10) of flap cover (9) and annular sealing surface (11) the airtight cooperation of part of valve body (12), its upper end of described valve body (12) is connected with attaching nut (8) is fixed in the valve body (12) valve gap (5), described set screw nut (4) is threaded with the upper end of valve gap (5) and the fixing relative position of adjusting bolt (3) and valve rod (2), the annular cavity filling flexible graphite packing (7) that forms between its middle part of described valve gap (5) and the valve rod (2) is filled monel alloy (6) in the annular cavity of described adjustment bolt (3) formation between itself and valve rod (2).
2, steel ball flap type high pressure-temperature stop valve according to claim 1 is characterized in that its material of annular sealing surface (11) of above-mentioned valve body (12) adopts 802 cemented carbide and wears into the annular sealing surface of valve body (12) with its built-up welding lappingout.
3, steel ball flap type high pressure-temperature stop valve according to claim 1 is characterized in that above-mentioned its material of steel ball flap (10) is a tungsten chromium cobalt.
4, steel ball flap type high pressure-temperature stop valve according to claim 1 is characterized in that above-mentioned flexible graphite packing (7) and monel alloy (6) can blend together combined packing.
5, steel ball flap type high pressure-temperature stop valve according to claim 1 is characterized in that the relative position of above-mentioned adjustment bolt (3) itself and valve rod (12) can be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95207105 CN2212688Y (en) | 1995-03-31 | 1995-03-31 | Steel ball flap type high-pressure high-temp stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95207105 CN2212688Y (en) | 1995-03-31 | 1995-03-31 | Steel ball flap type high-pressure high-temp stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212688Y true CN2212688Y (en) | 1995-11-15 |
Family
ID=33858846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95207105 Expired - Fee Related CN2212688Y (en) | 1995-03-31 | 1995-03-31 | Steel ball flap type high-pressure high-temp stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212688Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244703A (en) * | 2013-05-16 | 2013-08-14 | 中亚阀门有限公司 | Dust collection type spherical stop valve |
| CN103591371A (en) * | 2013-11-20 | 2014-02-19 | 南通龙源电站阀门有限公司 | High-pressure stop valve packing replacing structure under pressure |
| CN105042103A (en) * | 2015-09-09 | 2015-11-11 | 上海隆麦机械设备工程有限公司 | Gauge valve special for denitration module system |
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN105156693A (en) * | 2015-10-08 | 2015-12-16 | 江苏神通阀门股份有限公司 | Nuclear safety needle valve |
| CN111980679A (en) * | 2020-08-28 | 2020-11-24 | 西安石油大学 | Conversion device of drilling liquid level monitor and liquid level monitoring method thereof |
-
1995
- 1995-03-31 CN CN 95207105 patent/CN2212688Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244703A (en) * | 2013-05-16 | 2013-08-14 | 中亚阀门有限公司 | Dust collection type spherical stop valve |
| CN103591371A (en) * | 2013-11-20 | 2014-02-19 | 南通龙源电站阀门有限公司 | High-pressure stop valve packing replacing structure under pressure |
| CN105042103A (en) * | 2015-09-09 | 2015-11-11 | 上海隆麦机械设备工程有限公司 | Gauge valve special for denitration module system |
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN105156693A (en) * | 2015-10-08 | 2015-12-16 | 江苏神通阀门股份有限公司 | Nuclear safety needle valve |
| CN111980679A (en) * | 2020-08-28 | 2020-11-24 | 西安石油大学 | Conversion device of drilling liquid level monitor and liquid level monitoring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: KEWEI INSTRUMENT VALVE FACTORY, BEIJING TO: GUONENG VALVE PLANT, BEIJING |
|
| CP03 | Change of name, title or address |
Address after: 100038, 1 Fuxing Road, Beijing, Haidian District Patentee after: Beijing state energy valve factory Address before: 100084 Beijing Tsinghua University original scenery factory Patentee before: Kewei Instrument Valve Factory, Beijing |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing state energy valve factory Document name: payment instructions |
|
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: NO. 1, JIA, FUXING ROAD, HAIDIAN DISTRICT, BEIJING CITY TO: NO. 5,LONGYUAN ROAD, SHILONGGONGYE DISTRICT, MENTOUGOU DISTRICT, BEIJING CITY |
|
| CP02 | Change in the address of a patent holder |
Address after: No. 5, long Garden Road, Shilong Industrial Area, Mentougou District, Beijing Patentee after: Beijing state energy valve factory Address before: Fuxing Road 1, Beijing, Haidian District Patentee before: Beijing state energy valve factory |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing state energy valve factory Document name: payment instructions |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing state energy valve factory Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |