CN207999511U - A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure - Google Patents
A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure Download PDFInfo
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- CN207999511U CN207999511U CN201721568777.3U CN201721568777U CN207999511U CN 207999511 U CN207999511 U CN 207999511U CN 201721568777 U CN201721568777 U CN 201721568777U CN 207999511 U CN207999511 U CN 207999511U
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- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 239000002184 metal Substances 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910002804 graphite Inorganic materials 0.000 abstract description 9
- 239000010439 graphite Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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Abstract
本新型属于密封结构，具体涉及一种三偏心硬密封蝶阀用全金属U形弹性密封结构。它包括阀体，阀体上设置阀座，阀座上设置阀瓣，阀瓣上设置阀杆(3)，阀瓣和阀座之间设置阀瓣密封圈。本申请的显著效果是：采用整体全金属结构，取消柔性石墨夹层，从而避免了管道介质对柔性石墨的冲刷流失；在密封圈中间部位设计了U形槽结构，将整体密封圈分隔为两个具有一定弹性的密封圈，一是通过减少密封带面积使得在相同的阀杆扭矩作用下提高了密封比压、从而提升了密封效果，二是分隔开的两个金属密封圈具有一定的弹性，可以补偿密封面的加工误差，提高密封性能；三是全金属的密封结构提高了阀门的使用寿命。
The utility model belongs to a sealing structure, in particular to an all-metal U-shaped elastic sealing structure for a three-eccentric hard sealing butterfly valve. It comprises a valve body, a valve seat is arranged on the valve body, a valve disc is arranged on the valve seat, a valve stem (3) is arranged on the valve disc, and a valve disc sealing ring is arranged between the valve disc and the valve seat. The remarkable effect of this application is: adopt the overall all-metal structure, cancel the flexible graphite interlayer, thereby avoiding the erosion and loss of the flexible graphite by the pipeline medium; design a U-shaped groove structure in the middle part of the sealing ring, and separate the overall sealing ring into two The sealing ring has a certain elasticity. Firstly, by reducing the area of the sealing band, the sealing specific pressure is increased under the same valve stem torque, thereby improving the sealing effect. Second, the two separated metal sealing rings have a certain degree of elasticity. , can compensate the processing error of the sealing surface and improve the sealing performance; the third is that the all-metal sealing structure improves the service life of the valve.
Description
技术领域technical field
本新型属于密封结构，具体涉及一种三偏心硬密封蝶阀用全金属U形弹性密封结构。The utility model belongs to a sealing structure, in particular to an all-metal U-shaped elastic sealing structure for a three-eccentric hard sealing butterfly valve.
背景技术Background technique
三偏心蝶阀在双偏心(见图1中的A和B)的基础上将阀座中心线与阀体中心线斜置，形成一个偏心角(见图1中的C)，并在阀瓣密封面上配合一个相应的几何形状设计，使阀瓣在90°开关转动行程中，密封圈与阀座之间完全无任何磨擦，阀门关闭后，由阀杆扭矩在密封圈与阀座之间形成密封比压，从而保证阀门严密关闭。三偏心蝶阀在0°-90°开启过程中，密封圈会在开启的瞬间脱离阀座密封面，而其在90°-0°关闭过程中，只有在关闭的瞬间，密封圈才会接触并压紧阀座密封面。三偏心蝶阀启闭时蝶板密封面相对于阀座密封面是渐出脱离和渐入压紧，消除了两密封面之间的机械磨损和擦伤。On the basis of double eccentricity (see A and B in Figure 1), the triple eccentric butterfly valve inclines the centerline of the valve seat and the centerline of the valve body to form an eccentric angle (see C in Figure 1), and the disc seal The surface is matched with a corresponding geometric shape design, so that during the 90° switch rotation stroke of the valve disc, there is no friction between the sealing ring and the valve seat. Seal specific pressure, so as to ensure that the valve is tightly closed. During the opening process of the triple eccentric butterfly valve at 0°-90°, the sealing ring will break away from the sealing surface of the valve seat at the moment of opening, while during the closing process of 90°-0°, the sealing ring will only contact and hold at the moment of closing. Compress the seat sealing surface. When the triple eccentric butterfly valve is opened and closed, the sealing surface of the butterfly plate is gradually released from and pressed in gradually with respect to the sealing surface of the valve seat, which eliminates the mechanical wear and abrasion between the two sealing surfaces.
阀瓣密封圈一般采用多层金属夹柔性石墨的结构方案，从而综合了硬密封(金属)和软密封(柔性石墨)的优点，既使三偏心硬密封蝶阀具备高温应用条件，又具备良好的密封性能。但其缺点也比较明显，其中的柔性石墨在运行过程中容易受介质冲刷流失，使得密封性能难以保证。Disc sealing ring generally adopts the structural scheme of multi-layer metal clip flexible graphite, which combines the advantages of hard seal (metal) and soft seal (flexible graphite), so that the triple eccentric hard seal butterfly valve has high temperature application conditions and good performance. Sealing performance. However, its disadvantages are also obvious. The flexible graphite is easily eroded and lost by the medium during operation, making it difficult to guarantee the sealing performance.
发明内容Contents of the invention
本实用新型的目的是针对现有技术的缺陷，提供一种三偏心硬密封蝶阀用全金属U形弹性密封结构。The purpose of the utility model is to provide an all-metal U-shaped elastic sealing structure for a three-eccentric hard-sealed butterfly valve against the defects of the prior art.
本实用新型的技术方案是：一种三偏心硬密封蝶阀用全金属U形弹性密封结构，包括阀体，阀体上设置阀座，阀座上设置阀瓣，阀瓣上设置阀杆(3)，阀瓣和阀座之间设置阀瓣密封圈。The technical scheme of the utility model is: an all-metal U-shaped elastic sealing structure for a three-eccentric hard-sealed butterfly valve, including a valve body, a valve seat is arranged on the valve body, a valve disc is arranged on the valve seat, and a valve stem is arranged on the valve disc (3 ), and a disc sealing ring is set between the disc and the valve seat.
如上所述的一种三偏心硬密封蝶阀用全金属U形弹性密封结构，其中，阀瓣密封圈上设置全金属U形密封环。The above-mentioned all-metal U-shaped elastic sealing structure for a triple-eccentric hard-sealed butterfly valve, wherein an all-metal U-shaped sealing ring is arranged on the disc sealing ring.
如上所述的一种三偏心硬密封蝶阀用全金属U形弹性密封结构，其中，所述的全金属U形密封环设置的位置在阀瓣密封圈的最顶端和最底端。The above-mentioned all-metal U-shaped elastic sealing structure for a triple-eccentric hard-sealed butterfly valve, wherein the all-metal U-shaped sealing ring is arranged at the topmost and bottommost ends of the disc sealing ring.
本实用新型的显著效果是：采用整体全金属结构，取消柔性石墨夹层，从而避免了管道介质对柔性石墨的冲刷流失；在密封圈中间部位设计了U 形槽结构，将整体密封圈分隔为两个具有一定弹性的密封圈，一是通过减少密封带面积使得在相同的阀杆扭矩作用下提高了密封比压、从而提升了密封效果，二是分隔开的两个金属密封圈具有一定的弹性，可以补偿密封面的加工误差，提高密封性能；三是全金属的密封结构提高了阀门的使用寿命。The remarkable effect of the utility model is: adopt the overall all-metal structure, cancel the flexible graphite interlayer, thereby avoiding the erosion and loss of the flexible graphite by the pipeline medium; design a U-shaped groove structure in the middle part of the sealing ring, and separate the whole sealing ring into two parts. A sealing ring with a certain degree of elasticity, one is to increase the sealing specific pressure under the same valve stem torque by reducing the area of the sealing band, thereby improving the sealing effect, and the other is that the two separated metal sealing rings have a certain Elasticity can compensate the processing error of the sealing surface and improve the sealing performance; the third is that the all-metal sealing structure improves the service life of the valve.
附图说明Description of drawings
图1三偏心硬密封蝶阀的结构示意图。Figure 1 Schematic diagram of the structure of a triple eccentric hard-sealed butterfly valve.
图2全金属U形弹性密封结构。Figure 2 All-metal U-shaped elastic sealing structure.
附图中所示标号：1阀体；2阀瓣密封圈；3阀杆；4阀座密封面；5.U 形密封环。Labels shown in the attached drawings: 1 valve body; 2 disc sealing ring; 3 valve stem; 4 valve seat sealing surface; 5. U-shaped sealing ring.
具体实施方式Detailed ways
下面结合附图对本实用新型做进一步说明：Below in conjunction with accompanying drawing, the utility model is further described:
一种三偏心硬密封蝶阀用全金属U形弹性密封结构，包括阀体，阀体上设置阀座，阀座上设置阀瓣，阀瓣上设置阀杆，阀瓣和阀座之间设置阀瓣密封圈。An all-metal U-shaped elastic sealing structure for a triple-eccentric hard-sealed butterfly valve, including a valve body, a valve seat is arranged on the valve body, a valve disc is arranged on the valve seat, a valve stem is arranged on the valve disc, and a valve is arranged between the valve disc and the valve seat. Flap seal.
如上所述的一种三偏心硬密封蝶阀用全金属U形弹性密封结构，其中，阀瓣密封圈上设置全金属U形密封环。The above-mentioned all-metal U-shaped elastic sealing structure for a triple-eccentric hard-sealed butterfly valve, wherein an all-metal U-shaped sealing ring is arranged on the disc sealing ring.
如上所述的一种三偏心硬密封蝶阀用全金属U形弹性密封结构，其中，所述的全金属U形密封环设置的位置在阀瓣密封圈的最顶端和最底端。The above-mentioned all-metal U-shaped elastic sealing structure for a triple-eccentric hard-sealed butterfly valve, wherein the all-metal U-shaped sealing ring is arranged at the topmost and bottommost ends of the disc sealing ring.
实现本新型的技术特点有：Realize the technical characteristic of this new type to have:
1.整体全金属结构1. Overall all-metal structure
采用了整体全金属材料，取消柔性石墨夹层，避免了管道介质对柔性石墨的冲刷流失。The overall all-metal material is adopted, and the flexible graphite interlayer is canceled to avoid the erosion and loss of the flexible graphite by the pipeline medium.
2.U形弹性密封结构2. U-shaped elastic sealing structure
在密封圈中间部位设计了U形槽结构，将整体密封圈分隔为两个具有一定弹性的密封圈。A U-shaped groove structure is designed in the middle of the sealing ring, which divides the whole sealing ring into two sealing rings with certain elasticity.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721568777.3U CN207999511U (en) | 2017-11-22 | 2017-11-22 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721568777.3U CN207999511U (en) | 2017-11-22 | 2017-11-22 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
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| Publication Number | Publication Date |
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| CN207999511U true CN207999511U (en) | 2018-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721568777.3U Expired - Fee Related CN207999511U (en) | 2017-11-22 | 2017-11-22 | A kind of three eccentricity hard seal butterfly valve all-metal U-shaped elastic sealing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812586A (en) * | 2017-11-22 | 2019-05-28 | 中核苏阀科技实业股份有限公司 | An all-metal U-shaped elastic sealing structure for triple eccentric hard sealing butterfly valve |
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2017
- 2017-11-22 CN CN201721568777.3U patent/CN207999511U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812586A (en) * | 2017-11-22 | 2019-05-28 | 中核苏阀科技实业股份有限公司 | An all-metal U-shaped elastic sealing structure for triple eccentric hard sealing butterfly valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |