CN2791382Y - Valve not easy to leakage - Google Patents
Valve not easy to leakage Download PDFInfo
- Publication number
- CN2791382Y CN2791382Y CN 200420058559 CN200420058559U CN2791382Y CN 2791382 Y CN2791382 Y CN 2791382Y CN 200420058559 CN200420058559 CN 200420058559 CN 200420058559 U CN200420058559 U CN 200420058559U CN 2791382 Y CN2791382 Y CN 2791382Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- seat
- guiding
- antileakaging
- 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
- 239000000945 filler Substances 0.000 claims description 21
- 238000012856 packing Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a valve which is not easy to leak. A valve rod is composed of a lifting part and a sealing part, the diameter of the sealing part is larger than that of the lifting part, and a convex shoulder is formed on the connecting part of the two parts; a cylindrical valve rod starting sleeve is sheathed outside the lifting part with a small valve rod diameter, and the valve rod starting sleeve can rotate corresponding to the valve rod; one end of the valve rod starting sleeve is provided with outer threads which are matched with inner threads of a valve rod guide seat; the end surface of one end of valve rod starting sleeve with the outer threads corresponds to the end surface of the convex shoulder of the valve rod; the other end of the valve rod starting sleeve is extended out of the valve rod guide seat, and a hand wheel is sheathed outside the end part; the hand wheel is fixedly connected with the valve rod starting sleeve; the end part of the lifting part of the valve rod is extended out of the valve rod starting sleeve and is stopped on the upper end of the valve rod starting sleeve through a fixing piece to form axial positioning corresponding to the valve rod starting sleeve; stuffing is sealed on the sealing part of the valve rod. The valve rod of the valve is not easy to leak under the conditions of high temperature which is no more than 630DEG. C and high pressure which is no more than 32Mpa.
Description
Technical field
The utility model relates to a kind of valve, relates to particularly that a kind of (p≤32Mpa) seal performance is good, antileakaging valve for high pressure at high temperature (t≤630 ℃).
Background technique
Valve commonly used at present generally comprises handwheel, valve rod, spool, valve body, stuffing box packing and stem guiding seat, and wherein handwheel and valve rod are fixedly connected.Open or during throttle down, rotate handwheel when needs, handwheel drives valve rod and rotates, and by the effect of the screw pair between valve rod and the stem guiding seat, valve rod drive spool is finished lifting action, thereby finishes the unlatching of valve or close.Because the unlatching of valve and when closing, the lifting of valve rod causes owing to it rotatablely moves, so open or throttle down at every turn, valve rod all will be made rotation and lifting action simultaneously, makes excessive friction between valve rod and the filler, and the time has been grown, filler will wear and tear or owing to frictional heating causes aging, cause seal failure, cause that ducted material leaks along valve rod, easy like this causing danger.For valve of the small-sized pipeline below the DN30; big (p≤32Mpa), filler are few for (t≤130 ℃), pressure because the temperature height; be more prone to take place seal failure; so leakage phenomenon is more serious; for example be used in the valve of installing on the steam line of power plant usually, through regular meeting the valve rod place take place and water leakage phenomenon occurs.
The model utility content
Easily because filler excessive wear, aging and the problem that leak at the valve rod place takes place, the valve that provides a kind of difficult generation to leak is provided the purpose of this utility model at existing valve.
The purpose of this utility model is achieved through the following technical solutions, a kind of antileakaging valve, comprise handwheel, valve rod, valve body, filler, the stem guiding seat, valve rod is positioned at the stem guiding seat, described valve rod is made up of lifting part and hermetic unit, the diameter of hermetic unit is greater than the lifting part, two-part joint forms convex shoulder, the lifting unit that stem diameter is little divides the outside to be with cylindric valve rod starting cover, described valve rod starting cover can rotate with respect to valve rod, one end of valve rod starting cover has outside thread, screw-internal thread fit with the stem guiding seat, the valve rod starting is with the end face of the end face of an externally threaded end corresponding to the valve rod convex shoulder, the other end of valve rod starting cover stretches out in outer and outside, the end suit handwheel of stem guiding seat, handwheel and valve rod starting cover are fixedly connected, described valve rod starting cover is stretched out in the end of the lifting part of valve rod, and forming axially locating with respect to valve rod starting cover by the upper end that a fixed block is blocked in valve rod starting cover, described packing seal is at the hermetic unit of valve rod.
Described stem guiding seat can be made up of seat two-part in seat and the stem guiding in the outer guiding of valve rod, seat is the cylinder of the outer convex shoulder of band in the stem guiding, and band internal thread, cooperate with the outside thread of described valve rod starting cover, a seat bottom is inserted in the outer guiding of valve rod in the seat and its end face is pressed in the described stuffing box packing in the stem guiding, seat is the cylinder of the outer convex shoulder of band in the outer guiding of valve rod, outside thread is arranged at seat top in the outer guiding of valve rod, press nut to be mated in one, interior pressure nut is pressed on the outer convex shoulder of seat in the stem guiding.The stem guiding seat is made up of seat two-part in seat and the stem guiding in the outer guiding of valve rod, and assembles by interior pressure nut, makes the relatively simple for structure of each several part, is convenient to process.In addition, if when after valve uses a period of time, the valve rod place occurring and leak, can increase that seat reaches the purpose of leak-stopping to the impacting force of filler in the stem guiding by pressing nut in regulating because of the filler wearing and tearing.
Described valve rod starting cover can be fixed by jackscrew with handwheel, also can start the foreign side's respective outer side edges that puts setting by interior square structure on the handwheel and valve rod and fix.
The described valve rod that is used for can be packing ring and nut or pin etc. with respect to the axial fixed block of locating of valve rod starting cover.
The hermetic unit of described valve rod and lifting unit divide as a whole, also can be assembled by two-part.
Described spool can be for being inlaid in the spherosome on the described valve rod.
In the utility model, during valve opening, by rotating handwheel, handwheel drives the rotation of valve rod starting cover, and this moment, valve rod did not rotate, under the effect of the screw pair between valve rod starting cover and the stem guiding seat, valve rod starting cover rises, because valve rod end and handwheel and valve rod starting cover are axially fixing, promote valve rod at valve rod starting cover and rise valve opening.During valve closing, valve rod starting cover by and the stem guiding seat between the effect of screw pair in valve body, enter, by valve rod starting cover end the convex shoulder end face on the valve rod being exerted pressure makes valve rod descend throttle down.Because valve opening or when closing, has only straight line motion up and down between the hermetic unit of valve rod and the filler, mutual rotation can not take place, and the friction effect between the filler weakens greatly, thereby reduced the wearing and tearing and the degree of aging of filler, increased the working life of filler, made it guarantee excellent sealing performance, so this valve is difficult for leaking, and makes that also valve opening and closing is more laborsaving simultaneously.
Description of drawings
Fig. 1 is an antileakaging valve mechanism schematic representation of the present utility model.
Embodiment
Come below in conjunction with accompanying drawing and preferred embodiment that the utility model is described in further detail.
The structure of antileakaging valve as shown in Figure 1, the lifting part 9b diameter on valve rod top is littler than the diameter of the hermetic unit 9a of contact filler, the part of vary in diameter forms step-like convex shoulder 9c, the outside suit of the lifting part 9b of valve rod valve rod starting cylindraceous cover 10, valve rod starting cover 10 can relatively rotate with valve rod, there is outside thread the lower end of valve rod starting cover 10, the end face of this end is corresponding to the convex shoulder 9c end face of valve rod and by this step axially locating, the upper end of valve rod starting cover 10 is fixing with handwheel 11 by a jackscrew 13, makes to drive 10 rotations together of valve rod starting cover when rotating handwheel 11.The section diameter that one end of the close handwheel of valve rod stretches out handwheel 11 further dwindles, and forms step, and this part band outside thread overlaps 10 axially locating with valve rod with respect to the valve rod starting by the fastening of O type alloy packing ring 14 and locking nut 15 and cheese head screw 16.Seat 6 in the outside suit stem guiding cylindraceous of valve rod starting cover 10, the internal thread of seat 6 cooperates with the outside thread of valve rod starting cover 10 in the stem guiding, the outer surface medium position band that stem guiding is interior 6 is outer convex shoulder 6a circumferentially, and the following part of convex shoulder 6a is inserted in the outer interior seat 4 that leads of valve rod cylindraceous.The interior seat of the outer guiding of valve rod cylindraceous 4 outer surfaces middle part band is outer convex shoulder 4b circumferentially, the circumferential internal shoulder 4a of internal surface middle and lower part band, the diameter of internal shoulder 4a circumferential inner surface diameter and stem lower portion is suitable, packing ring 7 is installed on the internal shoulder 4a top of seat in the outer guiding of valve rod, filler 8 is installed on packing ring 7 tops, and the bottom of seat 6 compresses filler 8 downwards in the stem guiding.Press the outside thread of seat 4 in the outer guiding of nut 5 and valve rod to screw in install on the outer convex shoulder 6a top of seat 6 in the stem guiding,, realize sealing by pressing nut 5 in screwing with the filler axial compression.
Filler 8 adopts the Expanded graphite circles, makes it have that (p≤32Mpa) is better sealability and wear-resisting property down at high temperature (t≤630 ℃) high pressure.
Seat 4 bottoms are sleeved on the convex portion cylindraceous on valve body 1 top in the outer guiding of valve rod, and be contained on the valve body 1 by a nut 3, by screwing nut 3, the bottom of the outer convex shoulder 4a of seat 4 holds out against in the outer guiding of the cylindraceous protruding top on valve body 1 top and valve rod, thereby with seat axial restraint in the outer guiding of valve rod.This structure makes the processing of valve convenient, and is convenient to assembling.
Piece together cap 12 and be installed on the interior seat 4 of the outer guiding of valve rod, hold out against with interior pressure nut 5 and prevent nut loosening by screw thread.
The lifting part 9b and the hermetic unit 9a of valve rod are structure as a whole, and make that the assembling of valve is more convenient and valve rod is more durable.
During Open valve, rotate handwheel 11, handwheel 11 drives valve rod starting cover 10 and rotates together, effect by the screw pair of seat 6 in valve rod starting cover 10 and the stem guiding, valve rod starting cover 10 upwards rises and since locking nut 15 with stem shaft to fixing with valve rod starting cover 10, this moment, valve rod was also raised, but valve rod does not rotate, and finishes the unlatching of valve.During throttle down, handwheel 11 drives valve rod starting cover 10 and is rotated down propelling, to pressing down stem lower portion convex shoulder 9c, makes valve rod to decline by valve rod starting cover 10, finishes closing of valve, and in this process, valve rod is only made down maneuver equally.Owing to use this kind valve, when opening or closing, valve rod is only made lifting action, is not doing spinning movement, has reduced the friction of valve rod and filler, has increased the working life of filler, has prevented the leakage of valve.Simultaneously owing to reduced the friction of valve rod and filler, make valve unlatching or close more laborsaving.
Claims (9)
1, a kind of antileakaging valve, comprise handwheel, valve rod, valve body, filler, the stem guiding seat, valve rod is positioned at the stem guiding seat, it is characterized in that: described valve rod is made up of lifting part and hermetic unit, the diameter of hermetic unit is greater than the lifting part, two-part joint forms convex shoulder, the lifting unit that stem diameter is little divides the outside to be with cylindric valve rod starting cover, described valve rod starting cover can rotate with respect to valve rod, one end of valve rod starting cover has outside thread, screw-internal thread fit with the stem guiding seat, the valve rod starting is with the end face of the end face of an externally threaded end corresponding to the valve rod convex shoulder, the other end of valve rod starting cover stretches out in outer and outside, the end suit handwheel of stem guiding seat, handwheel and valve rod starting cover are fixedly connected, described valve rod starting cover is stretched out in the lifting of valve rod end partly, and is blocked in the axially locating of the upper end formation of valve rod starting cover with respect to valve rod starting cover by a fixed block, and described packing seal is at the hermetic unit of valve rod.
2, antileakaging valve as claimed in claim 1, it is characterized in that: described stem guiding seat is made up of seat two-part in seat and the stem guiding in the outer guiding of valve rod, seat is the cylinder of the outer convex shoulder of band in the stem guiding, and band internal thread, cooperate with the outside thread of described valve rod starting cover, a seat bottom is inserted in the outer guiding of valve rod in the seat and its end face is pressed in the described stuffing box packing in the stem guiding, seat is the cylinder of the outer convex shoulder of band in the outer guiding of valve rod, outside thread is arranged at seat top in the outer guiding of valve rod, press nut to be mated in one, interior pressure nut is pressed on the outer convex shoulder of seat in the stem guiding.
3, antileakaging valve as claimed in claim 1 or 2 is characterized in that: described valve rod starting cover is fixed by jackscrew with handwheel.
4, antileakaging valve as claimed in claim 3 is characterized in that: the described valve rod that is used for can be packing ring and nut or pin with respect to the axial fixed block of locating of valve rod starting cover.
5, antileakaging valve as claimed in claim 3, it is characterized in that: the hermetic unit of described valve rod and lifting unit divide as a whole.
6, antileakaging valve as claimed in claim 4 is characterized in that: described filler is the Expanded graphite circle.
7, antileakaging valve as claimed in claim 3 is characterized in that: piece together cap for one and be installed on the interior seat of the outer guiding of valve rod by screw thread, hold out against with interior pressure nut.
8, antileakaging valve as claimed in claim 3 is characterized in that: described spool is the spherosome that is inlaid on the described valve rod.
9, antileakaging valve as claimed in claim 2 is characterized in that: the seat bottom is sleeved on the convex portion cylindraceous on valve body top in the outer guiding of described valve rod, and is contained on the valve body by a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420058559 CN2791382Y (en) | 2004-12-10 | 2004-12-10 | Valve not easy to leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420058559 CN2791382Y (en) | 2004-12-10 | 2004-12-10 | Valve not easy to leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2791382Y true CN2791382Y (en) | 2006-06-28 |
Family
ID=36807452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420058559 Expired - Fee Related CN2791382Y (en) | 2004-12-10 | 2004-12-10 | Valve not easy to leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2791382Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105864479A (en) * | 2016-06-30 | 2016-08-17 | 纽威石油设备（苏州）有限公司 | Valve driver fixing locking structure and valve |
-
2004
- 2004-12-10 CN CN 200420058559 patent/CN2791382Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105864479A (en) * | 2016-06-30 | 2016-08-17 | 纽威石油设备（苏州）有限公司 | Valve driver fixing locking structure and valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING CHUANYU INSTRUMENTATION SETS CO.LTD. Free format text: FORMER OWNER: PENGJIPEI Effective date: 20081010 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081010 Address after: 290, Longfeng village, Beibei District, Chongqing, China: 400000 Patentee after: Chongqing Sichuan and Chongqing Instrument and meter complete set Co., Ltd. Address before: Chongqing City, Beibei Bei col 1-3 No. 193, zip code: 400070 Patentee before: Peng Jipei |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 Termination date: 20121210 |