CN2177134Y - Filler channel capable of changing filler in operation - Google Patents
Filler channel capable of changing filler in operation Download PDFInfo
- Publication number
- CN2177134Y CN2177134Y CN 93238741 CN93238741U CN2177134Y CN 2177134 Y CN2177134 Y CN 2177134Y CN 93238741 CN93238741 CN 93238741 CN 93238741 U CN93238741 U CN 93238741U CN 2177134 Y CN2177134 Y CN 2177134Y
- Authority
- CN
- China
- Prior art keywords
- filler
- stuffing box
- valve
- gland
- medium
- 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
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- Details Of Valves (AREA)
Abstract
The utility model relates to a filler channel capable of changing filler in operation, which is used for sealing a valve rod of a valve. For a present filler channel, the filler is difficult to add and replace because of the leakage of medium when the valve works, and the material loss and the environment pollution can be caused after the medium is leaked form the filler channel. The utility model is characterized in that a pressure relief assembly is added in the filler channel. When the filler is replaced or added in operation of the valve, the pressure relief is firstly carried out, and the filler is safely replaced or added under the condition that the upper filler is free from bearing pressure. The filler channel is particularly suitable for sealing the valve rod of a high pressure valve.
Description
The utility model relates to a kind of stuffing box, especially for the stuffing box of valve rod sealing.
Existing stuffing box mainly is made up of stuffing box cover, filler, gland and hold-down bolt.This stuffing box, in service at valve, stuffing box occur to leak, and compresses gland when inoperative, needs to change or add filler, generally is impossible.Though the hand stop valve that has can be changed under complete shut-down or full-gear or add filler, it must guarantee that the stuffing box place does not have leakage substantially under complete shut-down or full-gear, and standard-sized sheet or complete shut-down are in operation and also do not allow sometimes.Medium not only causes the loss of the material and the energy after leaking from stuffing box, befouling environment is also simultaneously leaked when serious, must breaks in production handle.
Proposing the purpose of this utility model, is a kind of improved stuffing box of design, can add or change stuffing box packing in that valve is in service, thereby avoids the material that medium causes by leakage in the stuffing box and the loss of the energy.
Design of the present utility model is to put out relief hole at existing stuffing box, when gland leakage, open the Decompression valves that is contained on the relief hole, allow the medium that leaks by Decompression valves emptying, make the filler on relief hole top not be subjected to the pressure of medium, thereby can change or add the top filler safely.For guaranteeing that the bottom filler is not become flexible by pressure medium when the pressure release, dress pressure release gland in the stuffing box cover, stuffing box puts and passes the suit check lock lever, screw check lock lever after, the pressure release gland just is pressed on the filler of bottom.
Accompanying drawing is a structural drawing of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to this figure, the effect of each several part of the present utility model and feature are like this; Valve rod 1 is sealed valve rod; Hold-down bolt 2 is used for compressing gland 3, can suitably screw when gland leakage; Gland 3 is used for compressing filler 7; Stuffing box cover 4 is main bodys of stuffing box, interior filling material 7; Relief hole 5 is as the passage of discharging leaking medium, and it is the hole that puts out at stuffing box cover 4; Decompression valves 6 is installed on the relief hole 5, during pressure release it is opened, and the medium that leaks in the discharging stuffing box is closed usually; Filler 7 is used for to valve stem seal; Pressure release gland 8 is contained in the stuffing box cover 4, as compressing the bottom filler and as the passage of discharge medium; Check lock lever 9 is as locking pressure release gland 8, and it is installed on the stuffing box cover 4 and passes its wall, and length is longer than wall thickness slightly, can withstand pressure release gland 8 after the precession.
The structure of stuffing box cover 4 is to have relief hole 5 and be set with check lock lever 9 putting and pass putting.
The structure of pressure release gland 8 is that the size of its middle part external diameter is less than the upper and lower part, leave the space, and the size of middle part internal diameter also leaves the space greater than the upper and lower part, radially also opens the hole at the middle part, and these spaces and through hole are as the passage of discharging leaking medium.
The operating process of replacing and interpolation filler is: at first the precession check lock lever 9, allow its termination dieback pressure release gland 8, prevent that the pressure release gland from being extruded by pressure medium, opens Decompression valves 6 then, the medium that leaks is discharged thus, make the pressure releasing of leaking medium, after this, wait for a period of time, observe when not having dielectric leakage around the gland 3, unclamp hold-down bolt 2, open gland 3, add or replacing top filler.Restore at last.
The utility model is easy to manufacture, and is simple to operate, solved the difficult problem that filler was changed or added to valve in running state, the leakage of fundamentally having stopped the valve packing letter, and its economic benefit and environmental benefit all are very big.
The utility model can be used as the stuffing box of the various valves of coming of new, also can be used for the transformation of old valve stuffing box.
Claims (2)
1, a kind of stuffing box, stuffing box especially for the valve rod sealing, this stuffing box is made up of hold-down bolt 2, gland 3, stuffing box cover 4, filler 7, it is characterized in that having put relief hole 5 and being set with check lock lever 9 putting and pass of stuffing box cover 4, in the stuffing box cover 4 pressure release gland 8 is housed, Decompression valves 6 is housed on the relief hole 5.
2, stuffing box according to claim 1, the size that it is characterized in that pressure release gland 8 its middle part external diameters is less than the upper and lower part, and the size of middle part internal diameter is radially opened the hole greater than the upper and lower part at the middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93238741 CN2177134Y (en) | 1993-05-22 | 1993-05-22 | Filler channel capable of changing filler in operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93238741 CN2177134Y (en) | 1993-05-22 | 1993-05-22 | Filler channel capable of changing filler in operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2177134Y true CN2177134Y (en) | 1994-09-14 |
Family
ID=33813405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93238741 Expired - Fee Related CN2177134Y (en) | 1993-05-22 | 1993-05-22 | Filler channel capable of changing filler in operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2177134Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016745A (en) * | 2011-09-21 | 2013-04-03 | 中国石油化工股份有限公司 | Sealing device used for rod element |
-
1993
- 1993-05-22 CN CN 93238741 patent/CN2177134Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016745A (en) * | 2011-09-21 | 2013-04-03 | 中国石油化工股份有限公司 | Sealing device used for rod element |
| CN103016745B (en) * | 2011-09-21 | 2015-05-13 | 中国石油化工股份有限公司 | Sealing device used for rod element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |