CN211288978U - Sealing structure of valve rod of underwater valve - Google Patents
Sealing structure of valve rod of underwater valve Download PDFInfo
- Publication number
- CN211288978U CN211288978U CN201921557933.5U CN201921557933U CN211288978U CN 211288978 U CN211288978 U CN 211288978U CN 201921557933 U CN201921557933 U CN 201921557933U CN 211288978 U CN211288978 U CN 211288978U
- Authority
- CN
- China
- Prior art keywords
- valve
- connecting plate
- valve rod
- shaped sealing
- sealing ring
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 48
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000945 filler Substances 0.000 abstract description 6
- 206010063659 Aversion Diseases 0.000 abstract 1
- 238000012856 packing Methods 0.000 description 12
- 239000013535 sea water Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model discloses a sealing structure of a valve rod of an underwater valve, which comprises a valve rod, a gland and a stuffing box; the gland and the stuffing box are sleeved outside the valve rod, a stuffing cavity is arranged between the stuffing box and the valve rod, a first lip-shaped sealing ring, a first O-shaped sealing ring, a first connecting plate, a first spring ring, a second connecting plate, a second spring ring, a third connecting plate, a second O-shaped sealing ring and a second lip-shaped sealing ring are sequentially arranged in the stuffing cavity from top to bottom, and the first lip-shaped sealing ring, the first O-shaped sealing ring, the first connecting plate, the first spring ring, the second connecting plate, the second spring ring, the third connecting plate, the second O-shaped sealing ring and the second lip-shaped sealing ring are sleeved outside the valve rod and are in sliding fit with the valve rod; the utility model discloses, simple structure has effectively solved the too big filler that leads to of valve pressure under water and has taken place deformation or aversion, causes the problem of sealing performance variation.
Description
Technical Field
The utility model relates to a valve seal technical field specifically is a seal structure of valve rod under water.
Background
The underwater valve is a general name of all valves applied to an underwater pipeline. At present, the underwater valve is mainly and intensively applied to an underwater manifold and a conveying pipeline of ocean oil and gas engineering in an underwater pipeline. Meanwhile, the underwater valve also has certain application in deep sea diving devices. The valves used are mainly: the operation modes of the ball valve, the gate valve, the check valve, the control valve and the like mainly adopt hydraulic operation, ROV operation and manual operation (shallow water), and due to the special use environment, the installation of the underwater valve is different from the land, so that the underwater valve is mostly installed underwater by an integrated device such as a manifold and the like.
Due to the special environment of the sea bottom, the underwater valve not only bears the internal pressure of the pipeline, but also bears the external pressure of seawater; however, when the valve rod packing of the existing underwater valve is pressed too much, no buffer structure exists, so that the packing is deformed or displaced, and the sealing performance is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a seal structure of valve rod under water to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a sealing structure of a valve rod of an underwater valve comprises a valve rod, a gland and a stuffing box; gland and packing box are all established in the outside of valve rod, be equipped with the packing chamber between packing box and the valve rod, be equipped with first lip seal circle from top to bottom in the packing chamber in proper order, first O type sealing washer, first connecting plate, first spring coil, the second connecting plate, the second spring coil, the third connecting plate, second O type sealing washer and second lip seal circle, and first lip seal circle, first O type sealing washer, first connecting plate, first spring coil, the second connecting plate, the second spring coil, the third connecting plate, second O type sealing washer and second lip seal circle establish the outside of valve rod and with valve rod sliding fit.
Preferably, the gland is fixedly connected to the top end of the stuffing box, and the two sides of the gland are fixedly connected with the valve body through fixing bolts, so that the gland is stably fixed on the valve body and plays a role in fixing stuffing in the stuffing box.
Preferably, the outside of fixing bolt is equipped with the rubber circle in the pot head of gland, prevents that fixing bolt is not hard up in vibrations.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a be equipped with first lip seal circle, first O type sealing washer, second O type sealing washer and second lip seal circle, multiple protection for the sealed effect of valve is better under water.
2. The utility model discloses a first connecting plate, first spring coil, second connecting plate, second spring coil and third connecting plate for valve rod is suitable for different pressure environment under water, and when the filler of filler intracavity whether receive pipeline internal pressure or receive sea water external pressure, impels first spring coil and second spring coil to take place to deform and come buffer pressure, and effective reinforcing is sealed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a valve stem; 2. a gland; 3. a stuffing box; 4. a packing cavity; 5. a first lip seal; 6. A first O-ring seal; 7. a first connecting plate; 8. a first spring ring; 9. a second connecting plate; 10. a second spring ring; 11. a third connecting plate; 12. a second O-ring seal; 13. a second lip seal; 14. Fixing the bolt; 15. a rubber ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, the present invention provides a technical solution: a sealing structure of a valve rod of an underwater valve comprises a valve rod 1, a gland 2 and a stuffing box 3; gland 2 and packing box 3 all overlap the outside at valve rod 1, be equipped with packing chamber 4 between packing box 3 and the valve rod 1, be equipped with first lip seal 5 in the packing chamber 4 from top to bottom in proper order, first O type sealing washer 6, first connecting plate 7, first spring coil 8, second connecting plate 9, second spring coil 10, third connecting plate 11, second O type sealing washer 12 and second lip seal 13, and first lip seal 5, first O type sealing washer 6, first connecting plate 7, first spring coil 8, second connecting plate 9, second spring coil 10, third connecting plate 11, second O type sealing washer 12 and second lip seal 13 cover are established in valve rod 1's outside and with valve rod 1 sliding fit.
Further, the gland 2 is fixedly connected to the top end of the stuffing box 3, and two sides of the gland 2 are fixedly connected with the valve body through fixing bolts 14.
Further, the outer portion of the fixing bolt 14 is sleeved with a rubber ring 15 at the upper end of the gland 2.
The working principle is as follows: when in use, the gland 2 is fixed on the valve body through the fixing bolt 14 and is used for fixing the filler in the filler cavity 4; the first lip-shaped sealing ring 5, the first O-shaped sealing ring 6, the first connecting plate 7 and the first spring ring 8 can seal external pressure generated by seawater, when the external pressure is applied, the first spring ring 8 deforms to buffer pressure, and after the first lip-shaped sealing ring 5 is damaged, the first O-shaped sealing ring 6 can also seal, double sealing is realized, and sealing at the valve rod 1 of the valve is ensured; second lip shape sealing washer 13, second O type sealing washer 12, third connecting plate 11 and second spring coil 10 can seal valve internal pressure, during the pressurized, second spring coil 10 takes place to deform and comes buffer pressure, second lip shape sealing washer 13 damages the back, second O type sealing washer 12 continues to seal, double sealing, the sealing of 1 department of valve stem has equally been guaranteed, in the whole device, make valve stem 1 be suitable for different pressure environment under water, when the filler in packing chamber 4 receives pressure, make first spring coil 8 and second spring coil 10 take place to deform and come buffer pressure, effectively strengthen sealedly.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A sealing structure of a valve rod of an underwater valve is characterized by comprising a valve rod (1), a gland (2) and a stuffing box (3); the gland (2) and the stuffing box (3) are sleeved outside the valve rod (1), a stuffing cavity (4) is arranged between the stuffing box (3) and the valve rod (1), a first lip-shaped sealing ring (5), a first O-shaped sealing ring (6), a first connecting plate (7), a first spring ring (8), a second connecting plate (9), a second spring ring (10), a third connecting plate (11), a second O-shaped sealing ring (12) and a second lip-shaped sealing ring (13) are sequentially arranged in the stuffing cavity (4) from top to bottom, and the first lip-shaped sealing ring (5), the first O-shaped sealing ring (6), the first connecting plate (7), the first spring ring (8), the second connecting plate (9), the second spring ring (10), the third connecting plate (11), the second O-shaped sealing ring (12) and the second lip-shaped sealing ring (13) are sleeved outside the valve rod (1) and are in sliding fit with the valve rod (1).
2. A sealing structure of a valve stem of a subsea valve according to claim 1, wherein: the gland (2) is fixedly connected to the top end of the stuffing box (3), and two sides of the gland (2) are fixedly connected with the valve body through fixing bolts (14).
3. A sealing structure of a valve stem of a subsea valve according to claim 2, wherein: the rubber ring (15) is sleeved outside the fixing bolt (14) at the upper end of the gland (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557933.5U CN211288978U (en) | 2019-09-17 | 2019-09-17 | Sealing structure of valve rod of underwater valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557933.5U CN211288978U (en) | 2019-09-17 | 2019-09-17 | Sealing structure of valve rod of underwater valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211288978U true CN211288978U (en) | 2020-08-18 |
Family
ID=72010948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921557933.5U Expired - Fee Related CN211288978U (en) | 2019-09-17 | 2019-09-17 | Sealing structure of valve rod of underwater valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211288978U (en) |
-
2019
- 2019-09-17 CN CN201921557933.5U patent/CN211288978U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 |