CN203500648U - Protection device for exposed fastening pieces on underwater valve - Google Patents
Protection device for exposed fastening pieces on underwater valve Download PDFInfo
- Publication number
- CN203500648U CN203500648U CN201320514682.9U CN201320514682U CN203500648U CN 203500648 U CN203500648 U CN 203500648U CN 201320514682 U CN201320514682 U CN 201320514682U CN 203500648 U CN203500648 U CN 203500648U
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- China
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- cover body
- protection cover
- valve
- underwater valve
- protective equipment
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Abstract
The utility model discloses a protection device for exposed fastening pieces on an underwater valve and aims to overcome the shortcomings of severe water pollution and economic loss which are caused by a fact that the underwater valve leaks as the conventional exposed fastening pieces arranged on the underwater valve are easy to corrode due to long-time endurance of continuous static pressure action in water and even in seawater. An internal thread on the upper part of the inner cavity of a protection cover body with a closed top is screwed on the upper part of a protected bolt; the outer wall of the inner cavity of the protection cover body covers a nut screwed on the bolt; a lower opening of the protection cover body is closely buckled on the upper plane of a valve cover flange. The protection cover body covers the bolt and the nut, the internal thread is screwed on the top of the bolt, and the lower opening is closely buckled on the upper plane of the valve cover flange of the valve, so that the exposed fastening pieces are covered in a closed space and cannot be corroded by an adverse environment; furthermore, the valve can be dismounted to be maintained in time, so that leakage of mediums in a pipeline can be avoided; therefore, the economic loss is reduced, and the water cannot be polluted. The protection device for the exposed fastening pieces on the underwater valve is simple in structure, safe and reliable.
Description
Technical field
The utility model belongs to the protective gear of valve part, specifically a kind of device that exerted bolt, nut fastener on the valve of installing is carried out to anti-corrosion protection under water.
Background technique
To being arranged on the anti-corrosion protection of the fastening pieces such as the bolt that is exposed on valve in atmosphere, nut, be generally at present to use safety cover to be buckled on the nut hexagon head of twisting on bolt.Above-mentioned guard method is fairly simple, under atmosphere environment, can use as blocking dust, and described safety cover can coordinate the protective measures such as existing coating or plating, makes the external corrosion environment isolation of exposed fastening piece and atmosphere.
Be arranged in water the valve in seawater especially; because the residing corrosiveness of the environment of valve is large; and to bear the lasting static pressure of seawater; want to make the exposed fastener on valve not to be corroded; use anti-corrosion protection under conventional atmosphere environment, its sealing, gas-tight property all do not reach etch-proof requirement under water, and this is because when bearing outside hydraulic pressure; aggressive medium is easy to invade from the gap of safety cover bottom and valve contact surface, causes protection to lose efficacy.The normally permanent use of underwater valve is installed, once after the oxidized corrosion of the fastening piece of valve, the difficulty of dismounting and maintenance is very large, wastes time and energy, disassembly cost is high, also easily causes the damage of parts during dismounting.If can not can cause the medium in pipeline to leak the timely detachable maintaining of the valve being not closed completely, not only economy be suffered a loss, and also makes water body contaminated, to safety, brings hidden danger, and its consequence is very serious, and the loss causing is inestimable.
For the larger parts that expose as valve upper valve body etc., multiplexly carry out the erosion of anti-sealing as anti-corrosion measures such as cathodic protections.And for being arranged on tightening nut, the bolt class of the upper outside dew of valve under water, because its Dimensions is less, number is various, cannot be electrically connected reliably, cathodic protection is not suitable for using.If select carbon steel or low alloy steel class material and adopt, electroplate or other similar measure anti-corrosion protections; can not meet the needs of Special use environment in seawater particularly; therefore; at present to the valve in seawater particularly in water; exposed fastener anti-corrosion protection on it, becomes a great problem that uses plant maintenance work under particular surroundings.
Summary of the invention
Technical problem to be solved in the utility model is, overcome the existing exposed fastener on valve in seawater particularly that is arranged in water, because be subject to for a long time to continue hydrostatic pressure in water, be difficult for isolating anticorrosion, cause valve detachable maintaining difficulty, valve leakage can cause the shortcoming of serious water pollution and economic loss, and a kind of protective equipment of underwater valve door exposed fastener is provided.
The problems referred to above that exist in order to solve prior art; the utility model is to adopt following technical proposals to realize: the protective equipment of underwater valve door exposed fastener comprises the protection cover body of top seal; the vertical internal thread on described safety cover intracoelomic cavity top is screwed in the top of protected bolt; the outer wall of safety cover intracoelomic cavity covers on outside the nut of twisting on bolt, and its end opening is buckled in the upper plane of bonnet flange hermetically.
The utility model also has following technical characteristics:
The end opening of described protection cover body is buckled in the upper plane of bonnet flange, is on the annular outer wall lower end surface of protection cover body end opening, is provided with the circular groove that Open Side Down, and the O RunddichtringO that can be pressed in bonnet flange plane is installed in groove;
The outer wall of described circular groove is shorter than the inwall of circular groove, in the lower plane of described outer wall and bonnet flange, between plane, seal ring is installed;
In the inner chamber of described protection cover body, ring internal thread is provided with presents a theatrical performance as the last item on a programme in protruding down, the lower end surface of inside presenting a theatrical performance as the last item on a programme be provided with can be buckled on described nut end face and with the corresponding identical curved surface of nut end face curved section;
At the outer top of described protection cover body, be provided with the convenient spanner of inserting and twist the other side that safety cover is used;
Described protection cover body is made by nonmetallic corrosion-resistant plastic material;
On the internal chamber wall of described protection cover body, be laid with vertical strengthening ribs;
The transitional surface place of described safety cover body periphery is made as arc shaped surface.
Advantage of the present utility model and good effect are, because the protection cover body of described protective equipment can cover on outside screw bolt and nut, the internal thread on inner chamber body top can be screwed in the top of bolt, end opening is buckled in the bonnet flange of valve in plane hermetically, make to protect cover body firmly exposed fastener to be wrapped in an enclosed space, can bear the lasting static pressure of seawater, its sealing and gas-tight property are good, can not be subject to seawater corrosion, make the exposed fastener of valve obtain good anti-corrosion protection, can in seawater, use throughout the year, certainly in common water, long-term use does not more have problem.When valve needs maintaining, lay down after safety cover, because exposed fastener anti-corrosion protection must be got well, nut is just backed out and is very easy to from bolt; Can dismantle in time valve and do maintaining, just can not cause leaking of pipeline internal medium, reduce economic loss, guarantee that water body is not contaminated.Said apparatus is simple in structure, safety, reliable.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model;
Fig. 2 protects the sectional view of cover body in Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
In Fig. 1, on the valve flange 7 of valve, with bolt 4 and nut 5, bonnet flange 6 is fixed thereon.The bell shape protection cover body 1(of top seal is referring to Fig. 2), the top of its inner chamber 1.3 is provided with the internal thread 1.1 that can be screwed on protected bolt 4.When protection cover body 1 is installed, described internal thread 1.1 is screwed in to the top on bolt 4, the outer wall of protection cover body 1 inner chamber 1.3 covers on twists outside the nut 5 of bolt 4, and its end opening is buckled in the upper plane of bonnet flange 6 hermetically.
The end opening of described protection cover body 1 is buckled in the upper plane of bonnet flange 6, is on the annular outer wall lower end surface of protection cover body 1 end opening, is provided with the circular groove 1.4 that Open Side Down, and " O " RunddichtringO 3 that can be pressed in bonnet flange 6 planes is installed in groove.Tighten protection cover body 1, make to protect " O " RunddichtringO 3 of cover body 1 end opening circular groove 1.4 interior installations to be pressed in tightly in bonnet flange 6 planes, prevented that water is because being subject to hydrostatic pressure to invade the inner chamber 1.3 of protection cover body 1.
For the further sealing between more protection cover body 1 and bonnet flange 6; once prevent " O " RunddichtringO 3 from damaging inefficacy, can not seal; the outer wall of described circular groove 1.4 1.8 is processed into than the inwall of circular groove 1.4 1.9 short one section (referring to Fig. 2); in described short annular outer wall 1.9 lower planes and bonnet flange 6 between plane; install seal ring 2; like this, two seals forms firmly two stifled waterproof sealing walls, safety, reliable.
Again even so; just in case " O " RunddichtringO 3 and seal ring 2 have all produced aging; can also be in described protection cover body 1 inner chamber 1.3; ring internal thread 1.1 is provided with presents a theatrical performance as the last item on a programme 1.2 in protruding down, and 1.2 the lower end surface of inside presenting a theatrical performance as the last item on a programme is provided with and can be buckled on described nut 5 end faces and with the corresponding identical curved surface 1.21(of nut 5 end face curved section referring to Fig. 2).When tightening protection cover body 1, because " O " RunddichtringO 3 and seal ring 2 are telescopic body, the curved surface 1.21 of 1.2 lower end surfaces of presenting a theatrical performance as the last item on a programme in described can be fitted on the end face of nut 5 securely, also can form sealing protection wall one.
For dismounting and the installation of convenient protection cover body 1, at the outer top of described protection cover body 1, be provided with the convenient hexagon head 1.5 that spanner is twisted protection cover body 1 use of inserting.Certainly, the spanner inserting surface of twisting protection cover body 1 can be also the other side of relative two planes, can also be four directions.
In order to prevent protecting cover body 1 to be corroded in water, described protection cover body 1 can select nonmetal and corrosion resistant rigid plastic material to make, such as slightly flexible plastic material, polytetrafluoro material etc.Like this, " O " RunddichtringO 3 and seal ring 2 both can make the lower end sealing of safety cover body 1, and the curved surface 1.21 of 1.2 lower ends of presenting a theatrical performance as the last item on a programme described in protection cover body 1 inner chamber 1.3 tops interior also can better be fitted better with nut 5 end face curved sections.
For improving the intensity of protection cover body 1 resistance to extruding, on the inner chamber wall of described protection cover body 1, be laid with vertical strengthening ribs 1.7.
Because protection cover body 1 is in water particularly in seawater for a long time; be subject to the external pressure of water in inner pressure; impaired in order to prevent from protecting cover body 1 to be subject to long-term static pressure; described in it on wall of inner chamber 1.3; uniform with vertical stiffening rib 1.7; meanwhile, the transitional surface place of protection cover body 1 periphery is made as to arc shaped surface 1.6.
After taking above-mentioned protective measure, no matter valve is arranged in general water body for a long time, or in seawater, the bolt 4 above it and nut 5, can both guarantee to be for a long time in the confined space that sealing and gas-tight property are good and not be corroded.
Above-mentioned protective equipment, is applicable to all devices exposed fastener and installs and uses in the strong particular surroundings of corrosivity.
Claims (8)
1. the protective equipment of a underwater valve door exposed fastener; the protection cover body that comprises top seal; it is characterized in that: the vertical internal thread on described safety cover intracoelomic cavity top is screwed in the top of protected bolt; the outer wall of safety cover intracoelomic cavity covers on outside the nut of twisting on bolt, and its end opening is buckled in the upper plane of bonnet flange hermetically.
2. the protective equipment of underwater valve door exposed fastener as claimed in claim 1; it is characterized in that: the end opening of described protection cover body is buckled in the upper plane of bonnet flange; on the annular outer wall lower end surface of protection cover body end opening; be provided with the circular groove that Open Side Down, the O RunddichtringO that can be pressed in bonnet flange plane is installed in groove.
3. the protective equipment of underwater valve door exposed fastener as claimed in claim 2, is characterized in that: the outer wall of described circular groove is shorter than the inwall of circular groove, in the lower plane of described outer wall and bonnet flange, between plane, seal ring is installed.
4. the protective equipment of underwater valve door exposed fastener as claimed in claim 3; it is characterized in that: in the inner chamber of described protection cover body, encircle internal thread and be provided with and present a theatrical performance as the last item on a programme in protruding down, the lower end surface of inside presenting a theatrical performance as the last item on a programme be provided with can be buckled on described nut end face and with the corresponding identical curved surface of nut end face curved section.
5. the protective equipment of underwater valve door exposed fastener as claimed in claim 1, is characterized in that: at the outer top of described protection cover body, be provided with the convenient spanner of inserting and twist the other side that safety cover is used.
6. as the protective equipment of the underwater valve door exposed fastener as described in arbitrarily in claim 1 or 2 or 3 or 4 or 5, it is characterized in that: described protection cover body is made by nonmetallic corrosion-resistant plastic material.
7. the protective equipment of underwater valve door exposed fastener as claimed in claim 6, is characterized in that: on the internal chamber wall of described protection cover body, be laid with vertical strengthening ribs.
8. the protective equipment of underwater valve door exposed fastener as claimed in claim 7, is characterized in that: the transitional surface place of described safety cover body periphery is made as arc shaped surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514682.9U CN203500648U (en) | 2013-08-22 | 2013-08-22 | Protection device for exposed fastening pieces on underwater valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514682.9U CN203500648U (en) | 2013-08-22 | 2013-08-22 | Protection device for exposed fastening pieces on underwater valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500648U true CN203500648U (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514682.9U Expired - Fee Related CN203500648U (en) | 2013-08-22 | 2013-08-22 | Protection device for exposed fastening pieces on underwater valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500648U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790597A (en) * | 2015-05-05 | 2015-07-22 | 刘银明 | Wall corner drain pipe supporting and protecting device |
| CN109898559A (en) * | 2019-04-16 | 2019-06-18 | 中格复合材料（南通）有限公司 | A kind of underwater facility protective cover |
-
2013
- 2013-08-22 CN CN201320514682.9U patent/CN203500648U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790597A (en) * | 2015-05-05 | 2015-07-22 | 刘银明 | Wall corner drain pipe supporting and protecting device |
| CN109898559A (en) * | 2019-04-16 | 2019-06-18 | 中格复合材料（南通）有限公司 | A kind of underwater facility protective cover |
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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 |
Granted publication date: 20140326 Termination date: 20140822 |
|
| EXPY | Termination of patent right or utility model |