CN201884704U - Novel spherical valve with double block and drain structure - Google Patents
Novel spherical valve with double block and drain structure Download PDFInfo
- Publication number
- CN201884704U CN201884704U CN2010206465832U CN201020646583U CN201884704U CN 201884704 U CN201884704 U CN 201884704U CN 2010206465832 U CN2010206465832 U CN 2010206465832U CN 201020646583 U CN201020646583 U CN 201020646583U CN 201884704 U CN201884704 U CN 201884704U
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- valve
- valve seat
- seal
- described valve
- valve body
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Abstract
The utility model discloses a novel spherical valve with a double block and drain structure. The spherical valve comprises a valve body, wherein a sphere is arranged in the valve body; a floating valve seat is arranged between inlets as well as outlets of the valve body and the sphere respectively; a seal ring is arranged between the sphere and each valve seat; and a spring is arranged between each valve seat and the valve body. When medium pressure exists at inlet ends or outlet ends, the floating valve seats are pushed to the sphere so as to play a seal role; and when the medium pressure of a middle cavity is increased to a rated pressure, the valve seats at two ends are pushed and opened for automatic depressurization. For the reason that the spherical valve provided by the utility model adopts a soft and hard combined sealing structure, when fire occurs in a pipeline and soft seal failure occurs, the valve seats are pushed to the sphere, and hard seal is formed between metal so as to play a seal role, so that the fire is prevented from being further expanded; and a grease injection valve is arranged at the valve seats, therefore, the valve seats are infused with seal grease for playing the function of emergency seal once the valve seal failure occurs. The spherical valve has the advantages of simple structure, convenience in use, safety and reliability.
Description
Technical field
The utility model relates to a kind of seal ball-valve, relates in particular to a kind of novel two ball valves that block discharge structure.
Background technique
In short supply along with world energy sources, oil, natural gas extraction are being quickened, and oil, rock gas long-distance transport pipes are built to be increased, and the transfer line construction of product oil is being accelerated.Seal ball-valve is the indispensable pipe fitting of the transfer line of product oil.
The seal ball-valve complex structure of the transfer line of product oil of the prior art, use inconvenience, and Security is not high.
The model utility content
The purpose of this utility model provides a kind of novel two ball valves that block discharge structure simple in structure, easy to use, safe.
The purpose of this utility model is achieved through the following technical solutions:
Novel two ball valves that block discharge structure of the present utility model, comprise valve body, be provided with spheroid in the described valve body, be respectively equipped with unsteady valve seat between the import of described valve body and outlet port and the described spheroid, be provided with O shape circle between the circumference fitting surface of described valve seat and described valve body, be provided with seal ring between described spheroid and the described valve seat.
The technological scheme that is provided by above-mentioned the utility model as can be seen, novel two ball valves that block discharge structure described in the utility model, owing to be respectively equipped with unsteady valve seat between the import of valve body and outlet port and the described spheroid, be provided with O shape circle between the circumference fitting surface of valve seat and described valve body, be provided with seal ring between described spheroid and the described valve seat.When entrance point or outlet end have pressure medium, can push the valve seat that floats to spheroid and play seal action; When the lumen pressure medium is elevated to rated pressure, thereby can push the valve seat at two ends open releasing pressure automatically.Property simple in structure, easy to use, safe is higher.
Description of drawings
Fig. 1 is novel two structural representations that block the ball valve of discharge structure of the present utility model;
Fig. 2 is the A portion enlarged view among Fig. 1; B portion among Fig. 1 and A portion symmetry;
Fig. 3 is an A portion stress schematic representation among Fig. 1;
Fig. 4 is a greasing view in the utility model.
Embodiment
Novel two ball valves that block discharge structure of the present utility model, its preferable embodiment as shown in Figures 1 to 4, comprise valve body 1, be provided with spheroid 2 in the described valve body 1, be respectively equipped with unsteady valve seat 3 between the import of described valve body 1 and outlet port and the described spheroid 2, be provided with O shape circle 4 between the circumference fitting surface of described valve seat 3 and described valve body 1, be provided with seal ring 5 between described spheroid 2 and the described valve seat 3.
Described seal ring 5 is embedded in the described valve seat 3 and forms the soft seal pair with described spheroid 2, is provided with spring 8 between described valve seat 3 and the described valve body 1.
Described seal ring 5 be embedded in the described valve seat 3 and and described valve seat 3 between be interference fit.
Described valve body 1 is provided with greasing hole 6, and is provided with grease pouring valve 7 at 6 places, described greasing hole, and described greasing hole 6 is run through described valve seat 3 and communicated with fitting surface gap between described spheroid 2 and the described valve seat 3.
Fitting surface between described spheroid 2 and the described valve seat 3 is the face that is sealed and matched firmly.
Novel two ball valves that block discharge structure of the present utility model, valve base sealing is two ball valves that valve seat all is an one-way sealing.
Working principle of the present utility model is:
As shown in Figure 1 and Figure 2, novelly two block ball-valve and be provided with two valve seats, seat design is a floating structure, and two valve seats all are designed to the unidirectional valve seat of single piston effect (as A portion among Fig. 1-2 and B portion).By spring-loaded pretightening force valve seat insert being pushed to spheroid under the medium operating mode usually, make it to fit tightly with spherome surface, play the pretension seal action.When lumen had pressure medium, endoceliac pressure medium continued to raise, thereby unidirectional valve seat was pushed open releasing pressure automatically during to rated pressure.When the pipeline entrance end is with pressure simultaneously, but the lumen releasing pressure automatically, and the installation of this valve does not have the direction requirement.Property simple in structure, easy to use, safe is higher.
As shown in Figure 3, at entrance point,, when entrance point has pressure medium, can push the one-way sealing valve seat to spheroid and play seal action because area difference forms the one-way sealing valve seat of single piston effect; At outlet end also is same reason.
When lumen had pressure medium, endoceliac pressure medium continued to raise, thereby unidirectional valve seat was pushed open releasing pressure automatically during to 1.1～1.33 times rated pressure.
As shown in Figure 4, the utility model adopts double seal, this structure is the soft or hard compound sealing structure, when the pipeline breaking out of fire, when soft seal was lost efficacy, valve seat is pushed to the spheroid metal to metal and forms hard sealing and play seal action, and be provided with grease pouring valve in the valve seat location of ball valve, in case valve seal lost efficacy the seal gease of can annotating, play the function of urgent sealing, thereby stoped the further expansion of fire.
The beneficial effects of the utility model are:
Also can realize releasing pressure automatically when pressure medium rises to rated pressure in the body cavity under the situation that lumen Decompression valves (safety valve) is not installed, save a safety valve, reduce by a leakage point simultaneously; Adopt two way sealed, sealing is reliable, and be provided with grease pouring valve in the valve seat location of ball valve, in case prolonged valve seal lost efficacy the seal gease of can annotating, play the function of sealing, this structure is the soft or hard compound sealing structure, when the pipeline breaking out of fire, when soft seal was lost efficacy, metal hard-sealing plays seal action, thereby has stoped the further expansion of fire.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (5)
1. novel two ball valves that block discharge structure, comprise valve body, be provided with spheroid in the described valve body, it is characterized in that, be respectively equipped with unsteady valve seat between the import of described valve body and outlet port and the described spheroid, be provided with O shape circle between the circumference fitting surface of described valve seat and described valve body, be provided with seal ring between described spheroid and the described valve seat.
2. novel two ball valves that block discharge structure according to claim 1 is characterized in that described seal ring is embedded in and forms the soft seal pair in the described valve seat, is provided with spring between described valve seat and the described valve body.
3. novel two ball valves that block discharge structure according to claim 1 is characterized in that, described seal ring be embedded in the described valve seat and and described valve seat between be interference fit.
4. according to claim 1,2 or 3 described novel two ball valves that block discharge structure, it is characterized in that, described valve body is provided with the greasing hole, and is provided with grease pouring valve at described greasing hole place, and described greasing hole is run through described valve seat and communicated with fitting surface gap between described spheroid and the described valve seat.
5. novel two ball valves that block discharge structure according to claim 4 is characterized in that the fitting surface between described spheroid and the described valve seat is the face that is sealed and matched firmly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206465832U CN201884704U (en) | 2010-12-02 | 2010-12-02 | Novel spherical valve with double block and drain structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206465832U CN201884704U (en) | 2010-12-02 | 2010-12-02 | Novel spherical valve with double block and drain structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884704U true CN201884704U (en) | 2011-06-29 |
Family
ID=44182246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206465832U Expired - Fee Related CN201884704U (en) | 2010-12-02 | 2010-12-02 | Novel spherical valve with double block and drain structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547963A (en) * | 2018-04-28 | 2018-09-18 | 上海华托阀门自动化有限公司 | A kind of primary and secondary sealing device for pipeline ball-valve |
| CN112253791A (en) * | 2020-10-29 | 2021-01-22 | 上海沪东造船阀门有限公司 | Double-sealing ball valve with compensation valve seat |
-
2010
- 2010-12-02 CN CN2010206465832U patent/CN201884704U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547963A (en) * | 2018-04-28 | 2018-09-18 | 上海华托阀门自动化有限公司 | A kind of primary and secondary sealing device for pipeline ball-valve |
| CN108547963B (en) * | 2018-04-28 | 2024-03-19 | 上海华托阀门自动化有限公司 | Primary and secondary sealing device for pipeline ball valve |
| CN112253791A (en) * | 2020-10-29 | 2021-01-22 | 上海沪东造船阀门有限公司 | Double-sealing ball valve with compensation valve seat |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20111202 |