CN102644760A - Sealing structure of ultrahigh-pressure needle valve - Google Patents
Sealing structure of ultrahigh-pressure needle valve Download PDFInfo
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- CN102644760A CN102644760A CN2012101237458A CN201210123745A CN102644760A CN 102644760 A CN102644760 A CN 102644760A CN 2012101237458 A CN2012101237458 A CN 2012101237458A CN 201210123745 A CN201210123745 A CN 201210123745A CN 102644760 A CN102644760 A CN 102644760A
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- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 229910000906 Bronze Inorganic materials 0.000 claims description 6
- 239000010974 bronze Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000012856 packing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
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Abstract
本发明公开了一种超高压针阀的密封结构，包括阀体（1）、上阀盖（2）及阀杆（3），阀杆（3）下端安装有阀针（4），阀针（4）的外部设有支撑垫（5），支撑垫（5）与阀体（1）之间设有密封环（6），支撑垫（5）与密封环（6）组成密封组，密封组的端部设有支撑环（7），阀针（4）与阀体（1）之间沿阀针（4）轴向方向设置有一组或多组密封组。本发明的有益效果是：密封性能可靠，能够满足超高压的工况，且磨损量小，使用寿命长；阀针与阀杆采用分体结构，当阀杆旋转时，阀针不随阀杆旋转，仅做轴向移动，从而减小了密封组的磨损，延长了针阀的使用寿命，同时降低了针阀开启和关闭的阻力，调节方便，操作省力。
The invention discloses a sealing structure of an ultra-high pressure needle valve, which comprises a valve body (1), an upper valve cover (2) and a valve stem (3). A valve needle (4) is installed at the lower end of the valve stem (3). There is a support pad (5) on the outside of (4), and a sealing ring (6) is provided between the support pad (5) and the valve body (1). The support pad (5) and the sealing ring (6) form a sealing group, and the sealing A support ring (7) is provided at the end of the group, and one or more sealing groups are arranged between the valve needle (4) and the valve body (1) along the axial direction of the valve needle (4). The beneficial effects of the invention are: the sealing performance is reliable, it can meet the working conditions of ultra-high pressure, and the wear amount is small, and the service life is long; the valve needle and the valve stem adopt a split structure, and when the valve stem rotates, the valve needle does not rotate with the valve stem , only move axially, thereby reducing the wear of the sealing group, prolonging the service life of the needle valve, and reducing the resistance of the needle valve opening and closing, easy to adjust, and labor-saving to operate.
Description
技术领域 technical field
本发明涉及针阀技术领域，特别是一种超高压针阀的密封结构。 The invention relates to the technical field of needle valves, in particular to a sealing structure of an ultra-high pressure needle valve.
背景技术 Background technique
针阀是节流阀的一种，主要由阀体、阀杆、阀针和上阀盖组成，阀体上设有阀座，阀针与阀杆相连，阀杆与上阀盖之间螺纹连接，旋转阀杆能够改变阀针与阀座之间的过流面积，实现截断或调节介质的流量。阀针与阀座之间的密封是依靠阀针的锥面与阀座之间的紧密配合达到的。现有针阀的阀针与阀杆多为一体式结构，阀杆或阀针与上阀盖或阀体之间设有填料密封，导致阀杆与填料之间的摩擦力大，旋转阀杆不灵活，开启或关闭阀门费力，同时增大了阀杆和填料的磨损；且现有密封结构在承受超高压工况下会发生介质渗漏的现象，不能满足超高压工况的需求。 Needle valve is a kind of throttle valve, which is mainly composed of valve body, valve stem, valve needle and upper valve cover. There is a valve seat on the valve body, the valve needle is connected with the valve stem, and the thread between the valve stem and the upper valve cover Connection, rotating the valve stem can change the flow area between the valve needle and the valve seat, so as to cut off or adjust the flow of the medium. The sealing between the needle and the seat is achieved by the tight fit between the tapered surface of the needle and the seat. The needle and stem of the existing needle valves are mostly integrated structures, and there is a packing seal between the valve stem or the valve needle and the upper valve cover or valve body, resulting in large friction between the valve stem and the packing, and the rotation of the valve stem It is inflexible, and it is laborious to open or close the valve, and at the same time increases the wear of the valve stem and packing; and the existing sealing structure will cause medium leakage under ultra-high pressure conditions, which cannot meet the needs of ultra-high pressure conditions.
发明内容 Contents of the invention
本发明的目的在于克服现有技术的缺点，提供一种能够适用于超高压工况，结构合理，使用寿命长，密封性好的超高压针阀的密封结构。 The purpose of the present invention is to overcome the disadvantages of the prior art, and provide a super-high-pressure needle valve sealing structure suitable for ultra-high pressure working conditions, reasonable in structure, long in service life and good in sealing performance.
本发明的目的通过以下技术方案来实现：一种超高压针阀的密封结构，包括阀体、上阀盖及阀杆，阀杆下端安装有阀针，阀针的外部设有支撑垫，支撑垫与阀体之间设有密封环，支撑垫与密封环组成密封组。 The purpose of the present invention is achieved through the following technical solutions: a sealing structure of an ultra-high pressure needle valve, including a valve body, an upper valve cover and a valve stem, a valve needle is installed at the lower end of the valve stem, and a support pad is provided outside the valve needle to support A sealing ring is arranged between the pad and the valve body, and the supporting pad and the sealing ring form a sealing group.
所述的支撑垫环套于阀针上，密封圈环套于支撑垫上。 The support pad ring is sleeved on the valve needle, and the sealing ring is sleeved on the support pad.
所述的支撑垫为帽形或J形，所述的密封环为C形环或O形环。 The support pad is hat-shaped or J-shaped, and the sealing ring is a C-ring or an O-ring.
所述的密封组的端部设有支撑环。 A support ring is provided at the end of the sealing group.
所述的阀针与阀体之间沿阀针轴向方向设置有一组或多组密封组。 One or more sealing groups are arranged between the valve needle and the valve body along the axial direction of the valve needle.
所述的支撑垫为复合青铜或高分子聚合物，密封环为金属合金或橡胶圈，支撑环为复合青铜或金属材料。 The support pad is composite bronze or polymer, the sealing ring is metal alloy or rubber ring, and the support ring is composite bronze or metal material.
所述的阀杆的下端设有空腔，空腔的下端为安装孔，阀针的端部安装于安装孔内，空腔内设有圆球，圆球设于阀针和阀杆之间。 The lower end of the valve stem is provided with a cavity, the lower end of the cavity is a mounting hole, the end of the valve needle is installed in the mounting hole, a ball is arranged in the cavity, and the ball is arranged between the valve needle and the valve stem. .
所述的阀针的端部扣接于阀杆的安装孔内。 The end of the valve needle is buckled in the installation hole of the valve stem.
本发明具有以下优点：本发明的密封性能可靠，能够满足超高压的工况，且磨损量小，使用寿命长；阀针与阀杆采用分体结构，阀针扣接于阀杆的安装孔内，且阀针与阀杆之间设有圆球，当阀杆旋转时，阀针不随阀杆旋转，仅做轴向移动，从而减小了密封组的磨损，延长了针阀的使用寿命，同时降低了针阀开启和关闭的阻力，调节方便，操作省力。 The present invention has the following advantages: the sealing performance of the present invention is reliable, can meet the working conditions of ultra-high pressure, and the wear amount is small, and the service life is long; the valve needle and the valve stem adopt a split structure, and the valve needle is fastened to the installation hole of the valve stem Inside, and there is a ball between the valve needle and the valve stem. When the valve stem rotates, the valve needle does not rotate with the valve stem, but only moves axially, thereby reducing the wear of the sealing group and prolonging the service life of the needle valve. , while reducing the resistance of the needle valve opening and closing, the adjustment is convenient, and the operation is labor-saving.
附图说明 Description of drawings
图1 为本发明的结构示意图 Fig. 1 is the structural representation of the present invention
图中，1-阀体，2-上阀盖，3-阀杆，4-阀针，5-支撑垫，6-密封环，7-支撑环，8-圆球，9-阀座，10-空腔，11-安装孔。 In the figure, 1-valve body, 2-upper bonnet, 3-valve stem, 4-valve needle, 5-support pad, 6-sealing ring, 7-support ring, 8-ball, 9-valve seat, 10 - cavity, 11 - mounting holes.
具体实施方式 Detailed ways
下面结合附图对本发明做进一步的描述： The present invention will be further described below in conjunction with accompanying drawing:
如图1所示，一种超高压针阀的密封结构，包括阀体1、上阀盖2及阀杆3，上阀盖2固设于阀体1上，阀杆3与上阀盖2通过螺纹连接，阀杆3下端安装有阀针4，阀体1上设有与阀针4配合的阀座9，阀杆3设有螺纹部分的下部的外壁环套有支撑垫5，支撑垫5的外侧环套有密封环6，支撑垫5与阀体1间通过该密封环6密封，支撑垫5与密封环6组成密封组。
As shown in Figure 1, a sealing structure of an ultra-high pressure needle valve includes a
所述的阀针4与阀体1之间沿阀针4轴向方向设置有一组或多组密封组，密封组的端部设有支撑环7，当设置多组密封组时，支撑环7与密封组间隔设置。
One or more sets of sealing groups are arranged between the
所述的支撑垫5为帽形或J形，所述的密封环6为C形环或O形环。
The
所述的支撑垫5为复合青铜或高分子聚合物，密封环6为金属合金或橡胶圈，支撑环7为复合青铜或金属材料。所述的阀杆3的下端设有空腔10，空腔10的下端为安装孔11，阀针4的端部安装于安装孔11内，空腔10内设有圆球8，圆球8设于阀针4和阀杆3之间。
The
所述的阀针4的端部扣接于阀杆3的安装孔11内。
The end of the
本发明的工作过程如下：密封组实现了针阀的密封，采用密封组与支撑环7配合，确保了密封结构的稳定性和可靠性，能够适应超高压的工况；调节针阀开度时，阀杆3旋转，由于阀针4与阀杆3采用分体结构，阀针4扣接于阀杆3的安装孔11内，且阀针4与阀杆3之间设有圆球8，阀针4不随阀杆3旋转，仅做轴向移动，从而减小了密封组的磨损，延长了针阀的使用寿命，同时降低了针阀开启和关闭的阻力，调节方便，操作省力。
The working process of the present invention is as follows: the sealing group realizes the sealing of the needle valve, adopts the sealing group to cooperate with the
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210123745 CN102644760B (en) | 2012-04-26 | 2012-04-26 | Sealing structure of ultrahigh-pressure needle valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210123745 CN102644760B (en) | 2012-04-26 | 2012-04-26 | Sealing structure of ultrahigh-pressure needle valve |
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| CN102644760A true CN102644760A (en) | 2012-08-22 |
| CN102644760B CN102644760B (en) | 2013-08-28 |
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| CN 201210123745 Expired - Fee Related CN102644760B (en) | 2012-04-26 | 2012-04-26 | Sealing structure of ultrahigh-pressure needle valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046898A (en) * | 2012-12-20 | 2013-04-17 | 西南石油大学 | Novel valve needle of pressure control drilling throttle valve |
| CN103939620A (en) * | 2014-04-18 | 2014-07-23 | 西南石油大学 | Ultrahigh pressure high-temperature needle valve |
| CN105257829A (en) * | 2015-10-15 | 2016-01-20 | 上海市计量测试技术研究院 | Ultrahigh-pressure stop valve |
| CN107989577A (en) * | 2017-12-05 | 2018-05-04 | 重庆前卫海洋石油工程设备有限责任公司 | Needle-valve for underwater horizontal type production tree |
| CN109139937A (en) * | 2018-10-10 | 2019-01-04 | 特阀江苏流体机械制造有限公司 | A kind of double isolation needle-valves of super-pressure |
| CN120890602A (en) * | 2025-10-10 | 2025-11-04 | 哈尔滨天翊煤矿救援装备有限公司 | A gas chamber pressure monitoring device and method |
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| GB1048826A (en) * | 1962-11-09 | 1966-11-23 | Hymatic Eng Co Ltd | Improvements relating to fluid control stop valves |
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| EP0263042A1 (en) * | 1986-09-26 | 1988-04-06 | Le Carbone Lorraine | Sealing system between a spindle and valve housing, and extractable cup therefor |
| CN102252099A (en) * | 2011-06-30 | 2011-11-23 | 朱成伟 | Valve rod |
| CN202520972U (en) * | 2012-04-26 | 2012-11-07 | 西南石油大学 | Sealing structure for ultra-high-pressure needle valve |
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2012
- 2012-04-26 CN CN 201210123745 patent/CN102644760B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US2486939A (en) * | 1944-08-02 | 1949-11-01 | Phillips Petroleum Co | Stuffing box |
| GB1048826A (en) * | 1962-11-09 | 1966-11-23 | Hymatic Eng Co Ltd | Improvements relating to fluid control stop valves |
| US3801112A (en) * | 1970-05-13 | 1974-04-02 | Ethylene Plastique Sa | Gland packings |
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| EP0263042A1 (en) * | 1986-09-26 | 1988-04-06 | Le Carbone Lorraine | Sealing system between a spindle and valve housing, and extractable cup therefor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046898A (en) * | 2012-12-20 | 2013-04-17 | 西南石油大学 | Novel valve needle of pressure control drilling throttle valve |
| CN103046898B (en) * | 2012-12-20 | 2015-04-08 | 西南石油大学 | Novel valve needle of pressure control drilling throttle valve |
| CN103939620A (en) * | 2014-04-18 | 2014-07-23 | 西南石油大学 | Ultrahigh pressure high-temperature needle valve |
| CN105257829A (en) * | 2015-10-15 | 2016-01-20 | 上海市计量测试技术研究院 | Ultrahigh-pressure stop valve |
| CN107989577A (en) * | 2017-12-05 | 2018-05-04 | 重庆前卫海洋石油工程设备有限责任公司 | Needle-valve for underwater horizontal type production tree |
| CN107989577B (en) * | 2017-12-05 | 2020-04-07 | 重庆前卫科技集团有限公司 | Needle valve for underwater horizontal Christmas tree |
| CN109139937A (en) * | 2018-10-10 | 2019-01-04 | 特阀江苏流体机械制造有限公司 | A kind of double isolation needle-valves of super-pressure |
| CN120890602A (en) * | 2025-10-10 | 2025-11-04 | 哈尔滨天翊煤矿救援装备有限公司 | A gas chamber pressure monitoring device and method |
| CN120890602B (en) * | 2025-10-10 | 2025-11-28 | 哈尔滨天翊煤矿救援装备有限公司 | Air cavity pressure monitoring device and method thereof |
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| Publication number | Publication date |
|---|---|
| CN102644760B (en) | 2013-08-28 |
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Granted publication date: 20130828 Termination date: 20160426 |