CN2856655Y - Valve stem metal sealing device - Google Patents
Valve stem metal sealing device Download PDFInfo
- Publication number
- CN2856655Y CN2856655Y CN 200420109046 CN200420109046U CN2856655Y CN 2856655 Y CN2856655 Y CN 2856655Y CN 200420109046 CN200420109046 CN 200420109046 CN 200420109046 U CN200420109046 U CN 200420109046U CN 2856655 Y CN2856655 Y CN 2856655Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- metal
- sealing device
- valve stem
- valve
- 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 - Lifetime
Links
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- Sealing Devices (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a valve stem metal sealing device comprising a C-type spring ring (4) and a metal spring sealing sleeve (3). The device is mounted in the ring gap between the valve stem (5) and the valve cover (1). The initial sealing is realized by interference variable and extrusion variable when assembling. When medium load applies on the C-type spring ring and metal spring sealing, deformation generated enlarges the sealing interface stress, high pressure sealing is realized by improving the sealing ability. The device is made of high performance deformable alloy in which deformation amount varies with the load. This utility model provides a dynamic sealing device with good sealing performance and long service life.
Description
Technical field
The utility model relates to a kind of valve rod metal sealing device that is applicable to valve.
Background technique
The valve rod sealing device that present known valve uses is nonmetallic material, nonmetallic material are bad in anti-aging, anti-high and low-temp, aspect effect such as anticorrosive, wear-resistant, be subjected to the wearing and tearing of the acute variation of immersion, temperature of Korrosionsmedium and movement parts and lost efficacy, leakage phenomenon takes place easily, and working life is short.
Summary of the invention
The purpose of this utility model is: a kind of valve rod metal sealing device is provided, realizes dynamic metallic seal, improve valve rod place sealability, increase the service life.
The scheme of the utility model technical solution problem is: the sealing device is made up of C type spring ring and metal spring stuffing box gland, and seal arrangement is installed in the annular space of valve rod and valve cover chamber.
Initial sealing is that magnitude of interference and the amount of compression when utilizing assembling realized.During in C type spring ring and metal spring stuffing box gland, deformation takes place as the medium loading, sealing contact surface stress is increased, sealability increases, and realizes high pressure sealing.
The utlity model has following advantage: 1, this device is made by high performance wrought alloy, and amount of deformation can change with the variation of load, thereby is a kind of dynamic sealing means; 2, the high-performance deformation alloy is that a kind of spring material is made C shape spring ring and metal spring stuffing box gland, has solved anticorrosive, anti-aging, anti-high and low-temp, problem such as resistance to wear.
Description of drawings
Fig. 1 is the utility model structural representation
Among the figure: 1 valve gap, 2 glands, 3 metal spring stuffing box glands, 4C shape spring ring, 5 valve rods
Embodiment
As shown in the figure, the sealing device is made up of C shape spring ring 4 and metal spring stuffing box gland 3, and seal arrangement is installed in the annular space of 1 of valve rod 5 and valve gap, and 3 of valve gap 1 and metal spring stuffing box glands have gland 2.
After the assembling, metal spring stuffing box gland 3 has a certain amount of interference with valve rod 5, there is certain amount of compression between C shape spring ring 4 and valve gap 1, metal spring stuffing box gland 3 surface of contact, A place, the bottom ring cavity that valve rod 5 contacts with valve gap 1 is realized sealing, the inner chamber B place of 4 pairs of metal spring stuffing box glands 3 of C shape spring ring, valve gap 1 formation realizes sealing simultaneously, and whole device forms the initial low pressure sealing.
When medium load in A, the B ring cavity increases, because deformation takes place in metal spring stuffing box gland 3, C shape spring ring 4, C shape spring ring 4 and valve gap 1, metal spring stuffing box gland 3 amount of compression are increased and gland 2 moves on not, because the load large size is big on the non-contact face that metal spring stuffing box gland 3 and valve rod are 5, strengthen with valve rod 5 contact stress thereby order about metal spring stuffing box gland 3, realized high pressure sealing like this.
Metal spring stuffing box gland 3, C shape spring ring 4 are the high-performance deformation alloy, and amount of deformation changes with the variation of medium load, so this valve rod metal sealing device is a kind of dynamic metal sealing device.
Claims (3)
1. valve rod metal sealing device, it is characterized in that: this device is made up of C type spring ring (4) and metal spring stuffing box gland (3), is installed in the annular space between valve rod (5) and valve gap (1).
2. valve rod metal sealing device according to claim 1 is characterized in that: this device is made by the high-performance metal spring material.
3. valve rod metal sealing device according to claim 1 is characterized in that: between valve gap (1) and metal spring stuffing box gland (3) gland (2) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109046 CN2856655Y (en) | 2004-11-19 | 2004-11-19 | Valve stem metal sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109046 CN2856655Y (en) | 2004-11-19 | 2004-11-19 | Valve stem metal sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2856655Y true CN2856655Y (en) | 2007-01-10 |
Family
ID=37599962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420109046 Expired - Lifetime CN2856655Y (en) | 2004-11-19 | 2004-11-19 | Valve stem metal sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2856655Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10914383B2 (en) | 2017-05-09 | 2021-02-09 | Saint-Gobain Performance Plastics Corporation | Seal, assembly, and methods of using the same |
-
2004
- 2004-11-19 CN CN 200420109046 patent/CN2856655Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10914383B2 (en) | 2017-05-09 | 2021-02-09 | Saint-Gobain Performance Plastics Corporation | Seal, assembly, and methods of using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141119 Granted publication date: 20070110 |