CN103867734B - With the stop valve of elastic helix cutting ferrule - Google Patents
With the stop valve of elastic helix cutting ferrule Download PDFInfo
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- CN103867734B CN103867734B CN201410110145.7A CN201410110145A CN103867734B CN 103867734 B CN103867734 B CN 103867734B CN 201410110145 A CN201410110145 A CN 201410110145A CN 103867734 B CN103867734 B CN 103867734B
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- valve
- cutting ferrule
- stop valve
- elastic helix
- helix cutting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
技术领域 technical field
本发明涉及一种截止阀，尤其是涉及一种带有弹性螺旋卡套的截止阀。 The invention relates to a shut-off valve, in particular to a shut-off valve with an elastic spiral ferrule.
背景技术 Background technique
由于开闭过程中密封面之间摩擦力小，比较耐用，开启高度不大，制造容易，维修方便，不仅适用于中低压，而且适用于高压。截止阀的闭合原理是，依靠阀杠压力，使阀瓣密封面与阀座密封面紧密贴合，阻止介质流通。截止阀只许介质单向流动，安装时有方向性。截止阀的结构长度大于闸阀，同时流体阻力大，长期运行时，密封可靠性不强。 Due to the small friction between the sealing surfaces during the opening and closing process, it is relatively durable, the opening height is not large, it is easy to manufacture, and it is convenient to maintain. It is not only suitable for medium and low pressure, but also suitable for high pressure. The closing principle of the globe valve is to rely on the pressure of the valve rod to make the sealing surface of the disc and the sealing surface of the valve seat fit closely to prevent the flow of medium. The stop valve only allows the medium to flow in one direction, and it is directional when installed. The structural length of the stop valve is longer than that of the gate valve, and at the same time, the fluid resistance is large, and the sealing reliability is not strong during long-term operation.
在石化、石油及能源工业，各种浓度的王水、硫酸、盐酸、氢氟酸和各种有机酸、强酸、强氧化剂，以及各种浓度的强碱有机溶剂以及其它腐蚀性气体，液体介质的管路中，截止阀是最为广泛应用的流体控制元件之一，控制这种特殊流体的流通，必须具有相应的抗破坏能力来避免流体对密封面的腐蚀和瞬时冲击破坏。 In petrochemical, petroleum and energy industries, various concentrations of aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids, strong oxidants, and various concentrations of strong alkali organic solvents and other corrosive gases, liquid media In the pipeline, the stop valve is one of the most widely used fluid control components. To control the flow of this special fluid, it must have corresponding anti-destructive capabilities to avoid corrosion of the fluid on the sealing surface and instantaneous impact damage.
但现有的截止阀在设计加工过程中，很少考虑到阀门在全开时阀体内的密封性能，以及阀杆在特殊流体中受到的冲击腐蚀性，对于保持开启时间较长的研究较少，从而影响阀门的性能和使用寿命，因此，对于研制一种在全开状态下保持阀门正常工作的带有弹性螺旋卡套的截止阀就具有十分重要的现实意义。 However, during the design and processing of existing globe valves, the sealing performance of the valve body when the valve is fully open and the impact corrosion of the valve stem in special fluids are rarely considered, and there are few studies on keeping the valve open for a long time , thus affecting the performance and service life of the valve. Therefore, it is of great practical significance to develop a globe valve with an elastic spiral ferrule that can keep the valve working normally under the fully open state.
发明内容 Contents of the invention
为了克服背景技术中截止阀的不足，本发明的目的在于提供一种带有弹性螺旋卡套的截止阀，从而降低了阀门在全开时产生的空化，噪声，阀杆受到的特殊流体的腐蚀冲击，改变阀体内部流动冲击，提高阀门使用寿命的作用。阀门阀杆螺母失效时起到安全阀的作用，且没有增加阀门的负重。 In order to overcome the deficiencies of the stop valve in the background technology, the purpose of the present invention is to provide a stop valve with an elastic spiral ferrule, thereby reducing cavitation, noise, and special fluid impact on the valve stem when the valve is fully open. Corrosion impact, change the flow impact inside the valve body, and improve the service life of the valve. The valve stem nut acts as a safety valve in the event of failure without increasing the load on the valve.
本发明采用的技术方案是： The technical scheme adopted in the present invention is:
本发明包括阀体，阀座，阀瓣，阀杆，填料，销轴，阀盖，阀杆螺母和手轮。位于阀体内的阀杆下部与阀瓣间装有弹性螺旋卡套。 The invention includes a valve body, a valve seat, a valve disc, a valve stem, a filler, a pin shaft, a valve cover, a valve stem nut and a handwheel. An elastic spiral ferrule is arranged between the lower part of the valve stem located in the valve body and the valve clack.
所述弹性螺旋卡套是外表面为螺旋结构的、中心开有孔的圆柱体。 The elastic spiral ferrule is a cylinder with a spiral structure on the outer surface and a hole in the center.
所述弹性螺旋卡套的外径为2.44D，内径为1.88D，螺距为1/6D，D是与弹性螺旋卡套内孔配合段的阀杆直径。 The outer diameter of the elastic spiral ferrule is 2.44D, the inner diameter is 1.88D, and the pitch is 1/6D, where D is the valve stem diameter of the section that fits with the inner hole of the elastic spiral ferrule.
所述弹性螺旋卡套的材料为耐腐蚀的聚四氟乙烯。 The material of the elastic spiral ferrule is corrosion-resistant polytetrafluoroethylene.
本发明具有的有益效果是： The beneficial effects that the present invention has are:
本发明旨在通过结合分流减压及抗气蚀原理和密封结构解决现代阀门的一些缺点。充分利用弹性螺旋卡套使截止阀在较长时间保持全开时，起到密封，减压分流，防止空化，降低流体对阀杆冲击腐蚀，防振降噪的作用。在阀杆螺母失效时，起到安全阀的作用。提高了截止阀的抗冲击破坏能力和噪声，同时增加了截止阀的寿命，适应多种特殊流体介质对截止阀性能的需求。 The present invention aims to solve some disadvantages of modern valves by combining split flow decompression and anti-cavitation principles and sealing structure. Make full use of the elastic spiral ferrule to keep the globe valve fully open for a long time, to seal, decompress and divert flow, prevent cavitation, reduce impact corrosion of the fluid on the valve stem, and prevent vibration and noise. Acts as a safety valve in the event of stem nut failure. The impact resistance and noise resistance of the stop valve are improved, and the life of the stop valve is increased at the same time, so as to meet the performance requirements of various special fluid media for the stop valve.
本发明可满足石油、化工和水利等领域的需求。 The invention can meet the needs of fields such as petroleum, chemical industry and water conservancy.
附图说明 Description of drawings
图1是截止阀的结构示意图。 Figure 1 is a schematic diagram of the structure of the globe valve.
图2是图1中弹性螺旋卡套的主视图。 Fig. 2 is a front view of the elastic spiral ferrule in Fig. 1 .
图3是图2的俯视图。 FIG. 3 is a top view of FIG. 2 .
图4是本发明的弹性螺旋卡套结构立体图。 Fig. 4 is a perspective view of the structure of the elastic spiral ferrule of the present invention.
图1中：1、阀体，2、阀座，3、阀瓣，4、阀杆，5、轻型弹性螺旋卡套，6、填料，7、销轴，8、阀盖，9、阀杆螺母，10、手轮。 In Fig. 1: 1, valve body, 2, valve seat, 3, valve disc, 4, valve stem, 5, light elastic spiral ferrule, 6, packing, 7, pin shaft, 8, valve cover, 9, valve stem Nut, 10, hand wheel.
具体实施方式 detailed description
下面结合附图和实施例对本发明作进一步说明。 The present invention will be further described below in conjunction with drawings and embodiments.
如图1所示，本发明包括阀体1，阀座2，阀瓣3，阀杆4，填料6，销轴7，阀盖8，阀杆螺母9和手轮10。位于阀体1内的阀杆4下部与阀瓣3间装有弹性螺旋卡套5。驱动手轮10经阀杆4带动安装在阀盖8与阀体1内的阀瓣3和弹性螺旋卡套5上下运动，弹性螺旋卡套通过公差配合，安装在阀瓣3上部到阀门全开这一段阀杆上，阀瓣3上部与弹性螺旋卡套5下部接触面间通过密封圈密封，阀瓣3通过上下运动实现截止阀的开启和闭合。 As shown in FIG. 1 , the present invention includes a valve body 1 , a valve seat 2 , a valve disc 3 , a valve stem 4 , a packing 6 , a pin shaft 7 , a valve cover 8 , a valve stem nut 9 and a hand wheel 10 . An elastic spiral ferrule 5 is installed between the lower part of the valve stem 4 in the valve body 1 and the valve clack 3 . The driving hand wheel 10 drives the valve disc 3 and the elastic spiral ferrule 5 installed in the valve cover 8 and valve body 1 to move up and down through the valve stem 4, and the elastic spiral ferrule is installed on the upper part of the valve clack 3 to the valve fully open through tolerance matching. On this segment of the valve stem, the contact surface between the upper part of the valve disc 3 and the lower part of the elastic spiral ferrule 5 is sealed by a sealing ring, and the valve disc 3 realizes the opening and closing of the shut-off valve by moving up and down.
如图2、图3、图4所示，所述弹性螺旋卡套5是外表面为螺旋结构的、中心开有孔的圆柱体。 As shown in Fig. 2, Fig. 3 and Fig. 4, the elastic spiral ferrule 5 is a cylinder with a spiral structure on the outer surface and a hole in the center.
所述弹性螺旋卡套5的外径为2.44D，内径为1.88D，螺距为1/6D，D是与弹性螺旋卡套内孔配合段的阀杆直径。尺寸选取还可以根据实际应用进行可行性调整。 The outer diameter of the elastic spiral ferrule 5 is 2.44D, the inner diameter is 1.88D, and the thread pitch is 1/6D, where D is the diameter of the valve stem of the matching section with the inner hole of the elastic spiral ferrule. The size selection can also be adjusted according to the feasibility of the actual application.
所述弹性螺旋卡套5的材料尽可能选取廉价的轻型耐腐蚀材料。如耐腐蚀的聚四氟乙烯。 The material of the elastic spiral ferrule 5 is selected as cheap and light corrosion-resistant material as possible. Such as corrosion-resistant polytetrafluoroethylene.
本发明的工作原理是：The working principle of the present invention is:
当阀门逐渐开启过程中，介质通过阀门时，由于弹性螺旋卡套5，会使小开度的情况下通过截止阀的介质速度降低，从而起到分流减压作用。当阀门全开时达到稳定是，对于长时间工作处于开启的截止阀，起到密封，减压分流，防止空化，降低流体对阀杆冲击腐蚀，防振减噪噪的作用，从而延长了阀门的使用寿命。在阀杆螺母失效时，起到安全阀的作用。并适应多种特殊流体介质对截止阀性能的需求。 When the valve is gradually opened, when the medium passes through the valve, due to the elastic spiral ferrule 5, the speed of the medium passing through the stop valve will be reduced under the condition of small opening, so as to play the role of diversion and decompression. When the valve is fully open, it is stable. For the globe valve that has been open for a long time, it can seal, reduce pressure and divert flow, prevent cavitation, reduce the impact and corrosion of the fluid on the valve stem, prevent vibration and noise reduction, and prolong the service life. service life of the valve. Acts as a safety valve in the event of stem nut failure. And adapt to the performance requirements of a variety of special fluid media on the globe valve.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110145.7A CN103867734B (en) | 2014-03-24 | 2014-03-24 | With the stop valve of elastic helix cutting ferrule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110145.7A CN103867734B (en) | 2014-03-24 | 2014-03-24 | With the stop valve of elastic helix cutting ferrule |
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| Publication Number | Publication Date |
|---|---|
| CN103867734A CN103867734A (en) | 2014-06-18 |
| CN103867734B true CN103867734B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410110145.7A Active CN103867734B (en) | 2014-03-24 | 2014-03-24 | With the stop valve of elastic helix cutting ferrule |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119435737B (en) * | 2025-01-10 | 2025-04-08 | 华英阀业有限公司 | Regulating valve for high-pressure hydrogen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907249A (en) * | 1973-03-15 | 1975-09-23 | Ba Installationsutveckling Ab | Valve device for restricting the flow of a liquid by a helical flow passage |
| CN202432037U (en) * | 2011-12-13 | 2012-09-12 | 上海倍夫克阀门有限公司 | Stop valve |
| CN102966744A (en) * | 2012-11-28 | 2013-03-13 | 江苏鼎晟阀门有限公司 | Chlorine stop valve |
| CN202851993U (en) * | 2012-10-23 | 2013-04-03 | 河南航天液压气动技术有限公司 | Corrugated pipe stop valve |
| CN203115112U (en) * | 2012-12-21 | 2013-08-07 | 尹波 | Cover type sealing cutoff valve |
| CN203880112U (en) * | 2014-03-24 | 2014-10-15 | 浙江理工大学 | Stop valve with elastic spiral clamping sleeve |
-
2014
- 2014-03-24 CN CN201410110145.7A patent/CN103867734B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907249A (en) * | 1973-03-15 | 1975-09-23 | Ba Installationsutveckling Ab | Valve device for restricting the flow of a liquid by a helical flow passage |
| CN202432037U (en) * | 2011-12-13 | 2012-09-12 | 上海倍夫克阀门有限公司 | Stop valve |
| CN202851993U (en) * | 2012-10-23 | 2013-04-03 | 河南航天液压气动技术有限公司 | Corrugated pipe stop valve |
| CN102966744A (en) * | 2012-11-28 | 2013-03-13 | 江苏鼎晟阀门有限公司 | Chlorine stop valve |
| CN203115112U (en) * | 2012-12-21 | 2013-08-07 | 尹波 | Cover type sealing cutoff valve |
| CN203880112U (en) * | 2014-03-24 | 2014-10-15 | 浙江理工大学 | Stop valve with elastic spiral clamping sleeve |
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| Publication number | Publication date |
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| CN103867734A (en) | 2014-06-18 |
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