WO2012139504A1 - 一种滑板阀 - Google Patents

一种滑板阀 Download PDF

Info

Publication number
WO2012139504A1
WO2012139504A1 PCT/CN2012/073896 CN2012073896W WO2012139504A1 WO 2012139504 A1 WO2012139504 A1 WO 2012139504A1 CN 2012073896 W CN2012073896 W CN 2012073896W WO 2012139504 A1 WO2012139504 A1 WO 2012139504A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
seat
ring
valve body
hole
Prior art date
Application number
PCT/CN2012/073896
Other languages
English (en)
French (fr)
Inventor
张伟
王冠男
Original Assignee
Zhang Wei
Wang Guangnan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2011100939406A external-priority patent/CN102182836B/zh
Priority claimed from CN2011100939497A external-priority patent/CN102155548B/zh
Application filed by Zhang Wei, Wang Guangnan filed Critical Zhang Wei
Publication of WO2012139504A1 publication Critical patent/WO2012139504A1/zh

Links

Images

Classifications

    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0227—Packings
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/20—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats
    • F16K3/207—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats by means of hydraulic forces

Definitions

  • the present application relates to the field of valve technology, and in particular to a slide valve.
  • the valve is a device for regulating and switching the flow rate of the delivery conduit of the medium, which may be a gas, a liquid, a solid or a mixture thereof.
  • Valves are widely used in various industrial fields, and the slide valve is a type of valve.
  • the sliding valve includes a valve body, a valve seat and a sliding plate.
  • the valve seat and the valve body are respectively provided with corresponding through holes for the medium to flow, and the sliding plate with the through hole is driven by the actuator and the valve seat.
  • Relative sliding between the sealing working surfaces, thereby controlling the switching and flow of the through holes by changing the degree of coincidence of the through holes of the sliding plate and the through holes of the valve body and the valve seat, and the valve seat and the valve body are also provided with a balance valve seat
  • the elastic element that seals the valve cavity pressure on the working face.
  • the valve seat structure of the sliding valve usually adopts an integral plate type or disc structure, one side of which is matched with the inner surface of the valve body, and the other side opposite to the surface becomes a sealing working surface to contact the sliding plate, the valve seat and the valve body
  • the elastic element is usually provided with a disc spring, and the elastic element applies a spring force to the valve seat in the direction of the sliding plate, thereby maintaining good contact between the valve seat and the sliding plate, or automatically compensating when the sealing surface of the valve seat is worn to avoid sealing failure.
  • the elastic element provides a certain elastic force to balance the pressure of the valve cavity, so that the elastic element is raised very high It is required that the maximum valve chamber pressure of the sealing working surface of the valve seat during the opening or closing process is proportional to the pre-valve pressure and valve diameter. For large-diameter pipelines or high-pressure working conditions, it may be due to elasticity. The elastic force of the component is limited and the use of the slide valve is limited.
  • the application provides a slide valve.
  • the present application provides a slide valve including a valve body, a valve seat, an elastic member and a slide plate.
  • the valve body, the valve seat and the slide plate have through holes for the medium to flow therethrough, and the valve body and the valve seat have corresponding positions of the through holes to form a valve.
  • the sliding plate changes the degree of coincidence of the through hole with the through hole of the valve body and the valve seat by sliding;
  • the outer side of the valve body is used for connecting the pipe, and the inner side is abutted against the outer side of the valve seat by the elastic member, so that the sealing working face of the inner side of the valve seat is tight Pressing the sliding plate;
  • the valve seat is further provided with a pressure guiding surface communicating with the valve cavity, and the pressure of the valve cavity received by the pressure guiding surface is superposed with the elastic force of the elastic component.
  • the sliding valve proposed in the present application designs a pressure guiding surface on the valve seat as a pressure balance structure of the valve seat, and balances the pressure of the valve chamber on the sealing working surface of the valve seat by introducing the pipeline pressure, when the valve cavity pressure acts on the valve seat When sealing the working surface, the guiding pressure can act on the opposite side of the valve seat and the sealing working surface.
  • the two opposing forces are opposite to each other and cancel each other, so that the valve seat always fits closely with the sliding plate, and the sliding valve is solved at a large diameter.
  • Figure 1 is a perspective view of a slide valve of an embodiment of the present invention
  • FIG. 2 is a schematic exploded view of a slide valve according to an embodiment of the present invention.
  • Figure 3 is a cross-sectional view of a slide valve of an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a slide hole of a slide valve on a valve body according to an embodiment of the present invention
  • Figure 5 is a cross-sectional view showing a slide hole of a slide valve on a valve seat according to an embodiment of the present invention
  • FIG. 6 is a cross-sectional view showing a slide hole of a slide valve on a valve seat according to another embodiment of the present invention.
  • Figure 7 is a cross-sectional view showing the slide valve of the present invention in a fully open state
  • Figure 8 is a cross-sectional view showing a slide valve of the present invention in a fully closed state
  • Figure 9 is a cross-sectional view showing a slide valve of the present invention in a half open state
  • Figure 10 is a top plan view of a slide valve in a half open state according to the present invention.
  • Figure 11 is a schematic view showing the force receiving area of a conventional slide valve in a half open state
  • Figure 12 is a schematic view showing the force receiving area of the valve seat ring of the slide valve in the half open state of the present invention.
  • the slide valve of the present embodiment includes a valve body 1, a valve seat, an elastic member 4, a slide plate 11, a mounting flange 5, a valve cover 10, a connector 9, and the like.
  • the valve seat in the present embodiment employs a seat ring 3.
  • valve body 1, the valve seat and the sliding plate 11 each have a through hole for the medium to flow therethrough, and the valve body 1 corresponds to the position of the through hole on the valve seat, and the through holes communicate with each other in a state where the slide valve is fully open or half open.
  • a valve chamber for containing a medium is formed which, depending on the particular application of the slide valve, includes a liquid, a gas, a solid, or a mixture thereof.
  • the outer side of the valve body 1 is connected to the pipe through the mounting flange 5, and the inner side abuts the valve seat against the contact surface of the slide plate 11. As shown in FIG.
  • an elastic member 4 is disposed between the outer side of the valve seat and the valve body 1, and the inner side includes a sealing working surface 301 for receiving the pressure of the valve chamber, and the sealing working surface 301 presses the sliding plate 11.
  • the elastic member 4 can be a part such as a disc spring, and can provide a certain pre-compensation compensation function to the valve seat by using the elastic force thereof, so that the sealing working surface of the valve seat is always in close contact with the sliding plate 11.
  • One end of the sliding plate 11 is connected to the actuator through a connector 9, and the actuator can drive the sliding plate 11 to reciprocate against the sealing working surface of the valve seat, so that the through hole in the sliding plate 11 faces the through hole in the valve seat or A certain positional deviation is generated with the through hole in the valve seat to adjust the switching state and flow rate of the sliding valve.
  • the valve seat also includes a pressure guiding surface 302 for balancing the pressure of the valve chamber, the pressure guiding surface 302 facing the pipe, opposite to the direction of the force of the sealing working surface 301, when there is a flowing medium in the valve chamber, due to the pressure guiding surface 302 Facing the pipe, the pipe pressure acting on the pressure guiding surface of the medium has a component force along the flow direction of the medium, and the component force acts as the guiding force opposite to the pressure of the valve cavity which the sealing working surface 301 is subjected to, so that it can be balanced to some extent.
  • the valve chamber pressure relieves the working load of the elastic member 4.
  • the pressing force of the elastic member 4 behind the valve seat combined with the pressing surface 302 can adapt to these changes, so that The valve seat has a good sealing effect and reduces the requirement of the elastic member 4. Even in a large-diameter pipe or a high-pressure working condition, when the elastic force of the elastic member 4 is limited, the pressure guiding surface 302 can still ensure the use of its good pressure balance. Good sealing of the valve cavity.
  • the pressure of the valve chamber received by the pressure guiding surface 302 is superimposed on the elastic force of the elastic member 4.
  • the position of the pressure guiding surface 302 can be flexibly designed according to specific needs.
  • the inner wall surface of the through hole which can be disposed on the valve seat directly becomes a part of the inner wall surface of the through hole or the surface outside the valve seat, preferably, the pressure guiding surface 302 is flared along the direction of the slider 11 to the valve body 1.
  • the size and shape of the pressure guiding surface 302 can also be flexibly designed, for example, a flat, concave, convex or undulating annulus.
  • the inner wall surface of the through hole of the valve body 1 further has a pressure assisting surface 104 disposed opposite to the pressure guiding surface 302, and the pressure assisting surface 104 is located outside the pressure guiding surface 302, which enables The medium in the valve chamber is accommodated between the pressure assisting surface 104 and the pressure guiding surface 302 to facilitate application of a certain pipeline pressure to the pressure guiding surface 302.
  • the structure of the above-described pressure assisting surface 104 can also be expressed as that the through hole of the valve body 1 is gradually narrowed outward from a position close to the outer side of the valve seat, and the inner wall surface of the tapered through hole is formed with the pressure assisting surface 104.
  • the valve seat can be an integral plate or disc structure, one side of which cooperates with the inner surface of the valve body 1, and the other side becomes a sealing working surface to contact the sliding plate 11, so that the valve seat has a larger sealing working surface, due to the pressure guiding surface
  • the limited area of 302 has a limited balance.
  • the valve seat adopts an annular seat ring 3, and the inner side of the valve body 1 is further provided with a first groove 101 extending to the periphery of the through hole on the valve body 1, and the valve seat ring 3 is embedded in the first groove 101.
  • the annular structure also provides a through hole through which the medium flows, the through hole corresponding to the position of the through hole on the valve body 1.
  • the annular structure of the seat ring 3 greatly reduces the area of the sealing working surface, correspondingly reduces the area of the valve cavity pressure, and the sealing working surface is subjected to a small valve cavity pressure when the pressure of the valve chamber is constant. Therefore, the pressure applied to the pressure guiding surface 302 is easily balanced with the pressure of the valve chamber received by the sealing working surface 301, thereby further reducing the requirement for the elastic member 4, and the valve seat ring 3 and the sliding plate 11 are always reliable. Sealed to ensure the normal use of the slide valve.
  • valve seat 16 of the integral plate or disc structure is in the half-open state of the slide valve, and the area of the sealing working surface that receives the pressure of the valve chamber is C.
  • the seat ring 3 is half of the slide valve In the open state, the area where the sealing working surface is subjected to the pressure of the valve chamber is D.
  • the processing precision error of the product can be easily compensated by mutual grinding between the two, which reduces the processing precision requirement for the sealing working surface of the valve seat. .
  • the seat ring 3 can be directly pressed into the first groove 101 during the assembly process of the slide valve, and can also be installed in the first groove 101 in cooperation with other parts to avoid misalignment.
  • the slide valve further includes an annular seat ring retainer 2 that is also embedded in the first recess 101 and flush with the surface of the inner side of the valve body 1, the valve The seat ring holder 2 and the valve body 1 are fixedly connected by screws and the like, and the seat ring 3 is caught between the valve body 1 and the seat ring holder 2, so that the seat ring 3 can be between the non-contact slides 11. Accurate positioning makes assembly operations easier. As shown in FIG.
  • the valve seat ring 3 includes a sealing portion 303 and a locking portion 304 disposed at the periphery of the sealing portion 303.
  • the sealing working surface is located on the inner side of the sealing portion 303 to be in contact with the sliding plate 11, and the locking portion 304 is stuck.
  • the entire seat ring 3 floats up and down in the direction of the medium flow except under the pressure of the valve chamber and the elastic member 4. Can't move in other directions. In order to form a good seal between the seat ring 3 and the slide 11, the sealing face should always be in close contact with the slide 11.
  • the thickness of the sealing portion 303 may be slightly larger than the thickness of the seat ring holder 2, leaving a small gap between the locking portion 304 and the seat ring holder 2, due to the presence of the gap, the sealing of the seat ring 3 After the working surface is damaged by grinding many times, it can still be pressed against the sliding plate under the pre-compensation compensation of the elastic member 4, thereby increasing the service life of the sliding valve.
  • the first groove 101 is further provided with a sealing ring group 6 including at least one sealing ring, the valve seat ring 3, the valve body 1 and the valve seat
  • the ring holders 2 are sealingly fitted by the seal ring set 6.
  • the seal ring group 6 of the present embodiment includes three seal rings 601, 602, 603, 601 disposed at the contact of the inner edge of the seat ring holder 2 with the seat ring 3, and 602 disposed at the seat ring.
  • the contact portion 603 of the outer edge of the holder 2 with the first groove 101 is disposed at a junction of the seat ring 3 and the side of the valve body 1 near the pressure guiding surface 302.
  • the material, size and shape of the seat ring 3 can be flexibly selected.
  • the material is made of steel or ceramic
  • the thickness is slightly smaller than the depth of the first groove 101
  • the shape can be a regular or irregular ring.
  • the sealing face of the seat ring 3 can also be embedded with a certain hard or soft material insert to achieve a better sealing effect.
  • the sliding valve further includes an outer scraping ring 14, the surface of the inner side of the valve body 1 is further provided with a second groove 102, the second groove 102 is located at the periphery of the first groove 101; the outer scraping ring 14 is embedded in the second In the groove 102, the elastic body 15 between the outer scraper ring 14 and the valve body 1 is pressed between the sliding plate 11 and the valve body 1 to avoid the transition of the sliding valve valve from the open state to the half open or closed state.
  • the flowing medium moves along the gap between the valve body 1 and the slide plate 11 toward the end of the valve body 1 to damage the seal packing 13 and even cause leakage.
  • the sealing work surface area of the seat ring 3 is limited, it is impossible to integrally fit the slide plate 11, and the through hole on the slide plate 11 may move to the seat ring 3
  • the flowing medium may move along the gap between the valve body 1 and the sliding plate 11 toward the end of the valve body 1 to damage the sealing packing 13 and even cause leakage, and the outer scraping ring 14 just uses the ring.
  • the structure seals the area on the slide 11 that may move beyond the sealing working surface to prevent the medium from moving outside the outer wiper ring 14. Referring to FIG.
  • the inside of the valve body 1 has a sliding plate closing area 103 including a sealing working surface of the seat ring 3 and the outer scraping ring 14, and a region between the seat ring 3 and the outer scraping ring 14.
  • the through hole on the slide 11 corresponds to the position of the slide closed area 103 and cannot communicate with the through hole on the valve body 1 and the seat ring 3.
  • the slide closed area 103 is located at the seat ring 3 and Between the outer wiper rings 14, the medium cannot move beyond the outer wiper ring 14 when the through holes on the slide plate 11 are moved to the position.
  • the area is wider than the through hole in the sliding plate 11 in the moving direction of the sliding plate 11, so that the through hole of the sliding plate valve in the closed state does not completely contact the seat ring 3 and the outer scraping ring 14 in the closed state, which can achieve better. Seal protection.
  • the outer scraper ring 14 can be directly pressed into the second recess 102 during the assembly process of the slide valve. Of course, it can be mounted in the second recess 102 in cooperation with other parts to avoid misalignment.
  • the bottom of the groove of the second groove 102 is further provided with an elastic body 15, which can be a resilient washer, which is pressed against the outer scraper ring 14 between the outer scraper ring 14 and the valve body 1 to compensate for the pre-tightening action. Always adhere to the slide 11 to provide a good seal protection.
  • a gap is left between the outer scraper ring 14 and the groove bottom of the second groove 102, and the elastic body 15 is disposed in the gap to facilitate installation on the one hand, and the outer scraper ring on the other hand due to the existence of the gap.
  • the elastic body 15 After the surface which is in close contact with the sliding plate 11 is damaged by the grinding, it can still be pressed against the sliding plate 11 under the pre-compensation compensation of the elastic body 15, thereby increasing the service life of the sliding valve.
  • the material, size, shape and number of the outer scraping ring can be flexibly selected.
  • the material is made of steel or ceramic, and the thickness is slightly smaller than the depth of the second groove 102, and the shape can be regular or irregular.
  • the sealing working surface may also be embedded with an insert made of a hard or soft material, and the outer scraping ring may have a plurality of, for example, the second groove has a plurality of corresponding grooves when there are two outer scraping rings. So that one outer wiper ring is located on the outer periphery of the other outer wiper ring for better sealing.
  • the outer scraper ring 14 can be designed in the shape of a racetrack, including two parallel lines that coincide with the direction of movement of the slide plate 11, and the ends of the two parallel lines that correspond to each other are convexly curved.
  • the sliding valve may further include an outer wiper seal, and the outer wiper seal is disposed between the outer scraper 14 and the slide 11.
  • the outer wiper seal of the embodiment has Two, namely a first outer wiper seal 7 and a second outer wiper seal 8, both of which are shaped and sized corresponding to the outer wiper 14, respectively located at the inner and outer edges of the outer wiper 14 and The skateboard 11 is in contact.
  • the valve body 1 further includes a pressure guiding hole 105 extending from the inner wall surface of the through hole of the valve body 1 to the pressure guiding surface 302, when the valve cavity has When the liquid or gas is flowing to expose the valve seat to a large valve chamber pressure, the pressure guiding hole 105 can accommodate a certain medium. At this time, the pressure guiding surface 302 balances a certain valve chamber pressure to reduce the working load of the elastic member 4.
  • the pressure guiding hole 105 can also be disposed on the valve seat.
  • the pressure guiding hole 105 extends from the pressure guiding surface 302 to the inner wall surface of the through hole on the valve seat; the embodiment shown in FIG.
  • the pressure guiding hole 105 extends from the pressure guiding surface 302 to the sealing working surface 301 of the valve seat, and the pressure guiding hole 105 is preferably disposed on one side of the valve seat, and the pressure guiding hole 105 located on the side when the sliding valve is closed It can be electrically connected to the through hole on the slider 11.
  • the pressure guiding surface 302 may be disposed on the outer surface of the valve seat, and the length, diameter, number, position and shape of the pressure guiding hole 105 may be flexibly set as needed.
  • valve body 1, the seat ring 3 and the outer scraper ring 14 have two, and the two valve bodies 1, the seat ring 3 and the outer scraper ring 14 are correspondingly arranged on the slide plate.
  • the two valve covers 10 are fixedly connected to the left and right ends of the two valve bodies 1, respectively, and the sealing portion of the sliding plate 11 and the end of the valve body 1 is sealed by one or more layers of the sealing packing 13 to the entire valve.
  • Both the seat ring 3 and the valve chamber are sealed in a space surrounded by the valve body 1 and the valve cover 10.
  • One end of the slide plate 11 passes through a valve cover 10 to be connected to the actuator, and the other end passes through the other valve cover 10.
  • the outer sides of the two valve bodies 1 are fixed to a mounting flange 5 for mating connection with a pipe, the mounting flange 5 being matched with a through hole in the valve body 1.
  • the through hole on the valve body 1 and the seat ring 3 is completely displaced from the through hole on the sliding plate 11, and the pressing surface 302 is subjected to a certain pressing force, and the sliding plate 11 is
  • the through hole corresponds to the sliding plate closing area 103.
  • the medium in the valve cavity can enter the area outside the seat ring sealing area A and the outer wiper sealing area B.
  • the through holes on the valve body 1 and the seat ring 3 are partially offset from the through holes in the slide plate 11, and the portion of the slide plate 11 and the seat ring 3 are sealed.
  • the working face is in close contact, and the remaining part of the sealing working surface is in contact with the medium to withstand the valve cavity pressure.
  • the medium in the valve cavity will enter the outside of the seat ring sealing area A, and the outer scraping ring seal area B, but outside. It is difficult to reach the area other than the outer wiper seal area B by the sealing action of the wiper ring 14.
  • the valve chamber pressure acts on the sealing working surface 301 of the seat ring 3 and the pressing surface 302. The opposing forces on the two surfaces are opposite and cancel each other, so that the valve seat ring 3 is always in close contact with the sliding plate 11 to improve The reliability of the slide valve.
  • the invention designs the pressure guiding surface 302 as a pressure balance structure of the valve seat on the valve seat, and balances the pressure of the valve chamber on the sealing working surface of the valve seat by introducing the pipeline pressure, thereby solving the large diameter pipe and the high pressure working condition of the sliding valve.
  • the problem of the force balance of the lower valve seat reduces the requirement for the elastic component, and at the same time solves the influence of the pipeline pressure fluctuation and the impact on the sealing performance of the valve seat, and ensures the reliable sealing of the valve seat.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)

Abstract

一种滑板阀，包括阀体、阀座、弹性元件和滑板，阀体、阀座和滑板具有用于介质流过的通孔，阀体和阀座的通孔位置对应，构成阀腔，滑板通过滑动改变其通孔与阀体和阀座的通孔的重合程度，阀体外侧用于连接管道，内侧通过弹性元件抵接阀座的外侧，使阀座内侧的密封工作面紧压滑板，阀座还设置有与阀腔连通的引压面，引压面受到的阀腔压力与弹性元件的弹力为叠加关系，使阀座始终与滑板紧密贴合，保证了阀座的可靠密封。

Description

一种滑板阀 技术领域
本申请涉及阀门技术领域，具体涉及一种滑板阀。
背景技术
阀门是用于调节和开关介质的输送管道的流量的装置，介质可以是气体、液体、固体或其混合物。阀门广泛应用于各种工业领域，滑板阀是阀门的一种。
滑板阀，包括阀体、阀座和滑板等部件，阀座与阀体上都开设位置对应的通孔以便介质流过，同样带有通孔的滑板在执行机构的驱动下，与阀座的密封工作面之间产生相对滑动，从而通过改变滑板的通孔与阀体和阀座的通孔的重合程度控制通孔的开关和流量，阀座和阀体之间还设有用于平衡阀座的密封工作面所承受的阀腔压力的弹性元件。
目前，滑板阀的阀座结构通常采用整体的板式或者盘式结构，其一面与阀体的内表面间隙配合，与该面相反的另一面成为密封工作面而接触滑板，阀座与阀体之间通常设有碟簧等弹性元件，弹性元件给阀座施加一个靠近滑板方向弹力，从而保持阀座与滑板的良好接触，或者在阀座密封工作面磨损时自动补偿以避免密封失效。滑板阀在开启或者关断过程中，阀座的至少一部分密封工作面直接接触介质而承受很大的阀腔压力，弹性元件提供一定的弹力来平衡此阀腔压力，这样对弹性元件提出很高要求，考虑到滑板阀在开启或者关断过程中阀座的密封工作面所承受的最大阀腔压力与阀前压力、阀门口径等因素成正比，对于大口径管道或高压工况，可能由于弹性元件的弹力有限而使滑板阀的使用受限。
 技术问题
本申请提供一种滑板阀 。
 技术解决方案
本申请提供一种滑板阀，包括阀体、阀座、弹性元件和滑板，阀体、阀座和滑板具有用于介质流过的通孔，阀体和阀座的通孔位置对应，构成阀腔，滑板通过滑动改变其通孔与阀体和阀座的通孔的重合程度；阀体外侧用于连接管道，内侧通过弹性元件抵接阀座的外侧，使阀座内侧的密封工作面紧压滑板；阀座还设置有与阀腔连通的引压面，引压面受到的阀腔压力与弹性元件的弹力为叠加关系。
 有益效果
本申请提出的滑板阀在阀座上设计引压面作为阀座的压力平衡结构，通过引入管道压力来平衡阀座的密封工作面上承受的阀腔压力，当阀腔压力作用在阀座的密封工作面上时，引压力能够作用在阀座上与密封工作面相反的一面，这两个作用力方向相反且相互抵消，使阀座始终与滑板紧密贴合，解决了滑板阀在大口径管道及高压工况下的阀座受力平衡问题，降低了对于元件的要求，同时解决了管道压力波动和冲击对阀座的密封性能带来的影响，保证了阀座的可靠密封。
以下结合附图，对本申请滑板阀的具体示例进行详细说明。
 附图说明
图1是本发明一种实施例的滑板阀立体图；
图2是本发明一种实施例的滑板阀分解结构示意图；
图3为本发明一种实施例滑板阀的剖视图；
图4为本发明一种实施例滑板阀在阀体上开设引压孔的剖视图；
图5为本发明一种实施例滑板阀在阀座上开设引压孔的剖视图；
图6为本发明另一种实施例滑板阀在阀座上开设引压孔的剖视图；
图7为本发明一种滑板阀在全开状态的剖视示意图；
图8为本发明一种滑板阀在全关状态的剖视示意图；
图9为本发明一种滑板阀在半开状态的剖视示意图；
图10为本发明一种滑板阀在半开状态的俯视示意图；
图11为一种现有的滑板阀在半开状态时的阀座受力面积示意图；
图12为本发明一种滑板阀在半开状态时的阀座环受力面积示意图。
 本发明的最佳实施方式
本发明的实施方式
请参考图1和图2，本实施方式的滑板阀包括阀体1、阀座、弹性元件4、滑板11、安装法兰5、阀盖10、连接器9等组成部分。本实施方式中的阀座采用阀座环3。
阀体1、阀座和滑板11上都具有用于介质流过的通孔，阀体1和阀座上的通孔位置对应，这些通孔在滑板阀全开或者半开的状态下相互连通形成用于容纳介质的阀腔，根据滑板阀的具体用途，介质包括液体、气体、固体或其混合物等。阀体1外侧通过安装法兰5与管道连接，内侧将阀座紧抵在滑板11的接触面上。如图3所示,阀座外侧与阀体1之间设置弹性元件4，内侧包括用于承受阀腔压力的密封工作面301，密封工作面301紧压滑板11。弹性元件4可为碟簧等零件，能够利用其弹力对阀座提供一定的预紧补偿作用，使阀座的密封工作面始终紧贴在滑板11上。滑板11的一个端部通过连接器9与执行机构相连，该执行机构可驱动滑板11紧贴阀座的密封工作面作往复运动，使滑板11上的通孔正对阀座上的通孔或与阀座上的通孔产生一定的位置偏差，以便调整滑板阀的开关状态和流量大小。
阀座还包括用于平衡阀腔压力的引压面302,该引压面302朝向管道,与密封工作面301的受力方向相反,当阀腔内具有流动的介质时，由于引压面302朝向管道，因此介质作用在引压面上的管道压力沿介质流动方向具有一个分力，该分力作为引压力与密封工作面301所承受的阀腔压力方向相反，因此能够在一定程度上平衡该阀腔压力而减轻弹性元件4的工作负担，当管道内压力大幅波动或有较大的冲击出现时，阀座背后的弹性元件4结合引压面302的引压作用能够适应这些变化，使阀座具有良好的密封效果，降低了弹性元件4的要求，即使在大口径管道或高压工况下，当弹性元件4的弹力有限时，引压面302仍然能够利用其良好的压力平衡作用保证阀腔的良好密封。
引压面302受到的阀腔压力与弹性元件4的弹力为叠加关系。
引压面302的位置可根据具体需求灵活设计，例如可设置在阀座上通孔的内壁面直接成为该通孔内壁面的一部分，或者位于阀座外侧的表面，优选地，该引压面302沿滑板11至阀体1的方向扩口设置。引压面302的大小和形状也可灵活设计，例如呈平整、内凹、外凸或波浪形的环面。
进一步地，为了进一步增强引压效果，阀体1上通孔的内壁面还具有与引压面302相向设置的引压助力面104，该引压助力面104位于引压面302外侧，能够使阀腔内的介质容纳在引压助力面104与引压面302之间而便于对引压面302施加一定的管道压力。
上述引压助力面104的结构也可表述为，阀体1的通孔从靠近阀座的外侧的位置向外逐渐缩小，逐渐缩小的通孔的内壁面即形成引压助力面104。
阀座可为整体的板式或者盘式结构，其一面与阀体1的内表面配合，另一面成为密封工作面而接触滑板11，这样使阀座具有较大的密封工作面，由于引压面302的面积有限而起到的平衡作用也有限。优选地，阀座采用环形的阀座环3，阀体1内侧还设有向阀体1上的通孔外围延伸的第一凹槽101，阀座环3嵌置在第一凹槽101内，其环形结构同样提供了供介质流过的通孔，该通孔与阀体1上的通孔位置对应。阀座环3的环状结构大大减小了密封工作面的面积，相应地减小了其承受阀腔压力的面积，在阀腔压强一定的情况下使密封工作面承受较小的阀腔压力，因此使引压面302承受的引压力很容易与密封工作面301承受的阀腔压力相平衡，因此进一步降低了对于弹性元件4的要求，使阀座环3与滑板11之间始终能够可靠密封，保障滑板阀的正常使用。
请参考图11，整体板式或者盘式结构的阀座16在滑板阀的半开状态下，密封工作面承受阀腔压力的区域为C,请参考图12，阀座环3在滑板阀的半开状态下，密封工作面承受阀腔压力的区域为D。
减小阀座环3的密封工作面与滑板之间的接触面积后，产品的加工精度误差很容易通过二者之间的相互研磨来补偿，降低了对阀座的密封工作面的加工精度要求。
阀座环3可在滑板阀的装配过程中直接嵌压在第一凹槽101内，当然也可配合其他的零件定位安装在第一凹槽101内避免错位。一种实施方式中，滑板阀还包括环形的阀座环固定器2，该阀座环固定器2也嵌置在第一凹槽101内且可与阀体1内侧的表面平齐，该阀座环固定器2与阀体1通过螺钉等零件固定连接，将阀座环3卡在阀体1与阀座环固定器2之间，使阀座环3在未接触滑板11之间即可准确定位，因此更加便于装配操作。该实施方式如图3所示，阀座环3包括密封部303和设置在密封部303外围的卡入部304，密封工作面位于密封部303的内侧面能够与滑板11相接触，卡入部304卡在阀体1与阀座环固定器2之间且受到第一凹槽101壁部的约束，使整个阀座环3除了在阀腔压力和弹性元件4的作用下沿介质流动方向上下浮动外，无法沿其他方向移动。为了使阀座环3与滑板11之间形成良好的密封，密封工作面应始终紧贴滑板11。密封部303的厚度可略大于阀座环固定器2的厚度，使卡入部304与阀座环固定器2之间留出较小的间隙，由于该间隙的存在，当阀座环3的密封工作面多次被研磨受损后，仍然能够在弹性元件4的预紧补偿作用下紧贴滑板，因此增加了滑板阀的使用寿命。
为了避免阀腔中流动的介质进入弹性元件4而损坏碟簧等零件，第一凹槽101内还设有包括至少一个密封圈的密封圈组6，阀座环3、阀体1与阀座环固定器2之间通过该密封圈组6密封配合。参考图3，例如本实施方式中密封圈组6包括三个密封圈601、602、603，601设置在阀座环固定器2内缘与阀座环3的接触处、602设置在阀座环固定器2外缘与第一凹槽101的接触处、603设置在阀座环3与阀体1靠近引压面302一侧的结合处。
根据滑板阀的规格和使用场景，阀座环3的材料、尺寸和形状可灵活选择，例如材料选用钢材或者陶瓷，厚度略小于第一凹槽101的深度，形状可为规则或者不规则的圈状，阀座环3的密封工作面还可镶嵌一定的硬质或者软质材料制成的镶件，以便达到更好的密封效果。
进一步地，滑板阀还包括外刮环14，阀体1内侧的表面还设有第二凹槽102，第二凹槽102位于第一凹槽101的外围；外刮环14嵌置在第二凹槽102内，且通过外刮环14与阀体1之间的弹性体15紧压在滑板11和阀体1之间，避免滑板阀由打开状态转换至半开或者关闭状态的过程中，流动的介质沿阀体1与滑板11之间的缝隙向阀体1端部移动而损坏密封填料13甚至造成泄漏的现象。
当滑板阀由打开状态转换至半开或者关闭状态的过程中，由于阀座环3的密封工作面面积有限而不可能整体贴合滑板11，滑板11上的通孔可能移动至阀座环3的密封工作面之外，此时流动的介质有可能沿阀体1与滑板11之间的缝隙向阀体1端部移动而损坏密封填料13甚至造成泄漏，而外刮环14正好利用其圈状结构，对滑板11上的通孔可能移动至密封工作面之外的区域进行密封，阻止介质向外刮环14以外的区域移动。请参考图8，阀体1内侧具有滑板闭合区103，该滑板闭合区103包括阀座环3与外刮环14的密封工作面、以及阀座环3与外刮环14之间的区域。当滑板阀处于关闭状态时，滑板11上的通孔与该滑板闭合区103位置对应而无法与阀体1和阀座环3上的通孔连通，该滑板闭合区103位于阀座环3与外刮环14之间，当滑板11上的通孔移动至该位置时介质无法向外刮环14以外的区域移动。优选地，该区域沿滑板11的运动方向宽于滑板11上的通孔，使滑板阀在关闭状态下滑板11上的通孔完全不接触阀座环3和外刮环14，能够实现更好的密封保护作用。
外刮环14可在滑板阀的装配过程中直接嵌压在第二凹槽102内，当然也可配合其他的零件定位安装在第二凹槽102内避免错位。第二凹槽102的槽底还设有弹性体15，该弹性体15可为一个弹性垫圈，紧压在外刮环14和阀体1之间对外刮环14起到预紧补偿作用，使其始终紧贴滑板11而能够起到良好的密封保护效果。优选地，外刮环14与第二凹槽102的槽底之间留有一定间隙，弹性体15设置在该间隙内，一方面便于安装，另一方面由于该间隙的存在，当外刮环14与滑板11紧贴的一面多次被研磨受损后，仍然能够在弹性体15的预紧补偿作用下紧贴滑板11，因此增加了滑板阀的使用寿命。
根据滑板阀的规格和使用场景，外刮环的材料、尺寸、形状和数量可灵活选择，例如材料选用钢材或者陶瓷，厚度略小于第二凹槽102的深度，形状可为规则或者不规则的圈状，其密封工作面还可镶嵌一定的硬质或者软质材料制成的镶件，外刮环还可具有多个，例如具有两个外刮环时第二凹槽也相应具有多个，使一个外刮环位于另一个外刮环外围以便达到更好的密封效果。优选地，外刮环14可设计成跑道形，包括两条与滑板11的运动方向一致的平行线，两个平行线相互对应的端部采用外凸的弧形连接。为了进一步保障密封效果，滑板阀还可包括外刮环密封圈，外刮环密封圈密封设置在外刮环14与滑板11之间，参考图3，例如本实施例中的外刮环密封圈具有两个，即第一外刮环密封圈7和第二外刮环密封圈8，二者的形状和大小都与外刮环14相应，分别位于外刮环14的内缘和外缘且与滑板11接触。
在阀座上设置引压面302后，还可通过在阀体1或阀座上开通孔将管道或阀腔以及外部压力引入该引压面302上，来平衡阀座密封工作面301上的阀腔压力。如图4所示的另一种实施方式中，阀体1还包括引压孔105，该引压孔105自阀体1上通孔的内壁面延伸至引压面302，当阀腔内具有流动液体或气体而使阀座承受较大阀腔压力时，该引压孔105内可容纳一定的介质，此时引压面302平衡一定的阀腔压力而减轻弹性元件4的工作负担。引压孔105也可设置在阀座上，如图5所示的实施方式中，引压孔105自引压面302延伸至阀座上通孔的内壁面；如图6所示的实施方式中，引压孔105自引压面302延伸至阀座的密封工作面301，且该引压孔105优选设置在阀座的一侧，当滑板阀关闭过程中位于该侧的引压孔105可与滑板11上的通孔相导通。以上各实施方式中，引压面302可设置在阀座外侧的表面，且引压孔105的长度、直径、数量、位置和形状都可根据需要灵活设置。
对于大多数滑板阀，请参考图1，阀体1、阀座环3和外刮环14都具有两个，且两个阀体1、阀座环3和外刮环14都对应设置在滑板11的上下两侧，两个阀盖10分别固定连接两个阀体1的左右两端,且通过一层或者多层密封填料13密封滑板11与阀体1端部的连接处，将整个阀座环3和阀腔都密封在阀体1和阀盖10围合成的空间内，滑板11一端穿出一个阀盖10与执行机构相连，另一端穿出另一个阀盖10。两个阀体1的外侧都固定用于和管道配合连接的安装法兰5，该安装法兰5与阀体1上的通孔相匹配。
如图7所示，当滑板阀处于全开状态时，阀体1、阀座环3和滑板11上的通孔连通，引压面302承受一定的引压力，滑板阀在阀座环密封区域A内可靠密封，此时阀腔内的介质难以到达阀座环密封区域A以外的区域。
如图8所示，当滑板阀处于关闭状态时，阀体1和阀座环3上的通孔与滑板11上的通孔完全错位，引压面302承受一定的引压力，滑板11上的通孔与滑板闭合区103对应，此时阀腔内的介质可进入阀座环密封区域A以外、外刮环密封区域B以内的区域，然而在外刮环14的密封作用下难以到达外刮环密封区域B以外的区域。
如图9和图10所示，当滑板阀处于半开状态时，阀体1和阀座环3上的通孔与滑板11上的通孔局部错开，滑板11与阀座环3的部分密封工作面紧密接触，而密封工作面的剩余部分与介质接触而承受阀腔压力，此时阀腔内的介质会进入阀座环密封区域A以外，外刮环密封区域B以内的区域，然而在外刮环14的密封作用下难以到达外刮环密封区域B以外的区域。阀腔压力作用在阀座环3的密封工作面301上与引压面302上，这两个面上的作用力方向相反且相互抵消，使阀座环3始终与滑板11紧密贴合，提高了滑板阀的可靠性。
本发明在阀座上设计引压面302作为阀座的压力平衡结构，通过引入管道压力来平衡阀座的密封工作面上承受的阀腔压力，解决了滑板阀在大口径管道及高压工况下的阀座受力平衡问题，降低了对于弹性元件的要求，同时解决了管道压力波动和冲击对阀座的密封性能带来的影响，保证了阀座的可靠密封。
以上应用具体个例对本发明的原理及实施方式进行了阐述，应该理解，以上实施方式只是用于帮助理解本发明，而不应理解为对本发明的限制。对于本领域的一般技术人员，依据本发明的思想，可以对上述具体实施方式进行变化。
 工业实用性
序列表自由内容

Claims (13)

  1. 一种滑板阀，包括阀体（1）、阀座（3）、弹性元件（4）和滑板（11），
    所述阀体（1）、阀座（3）和滑板（11）具有用于介质流过的通孔，所述阀体（1）和阀座（3）的通孔位置对应，构成阀腔，滑板（11）通过滑动改变其通孔与阀体（1）和阀座（3）的通孔的重合程度，
    所述阀体（1）外侧用于连接管道，内侧通过弹性元件（4）抵接阀座（3）的外侧，使阀座（3）内侧的密封工作面（301）紧压所述滑板（11），
    其特征在于，所述阀座（3）还设置有与阀腔连通的引压面（302），引压面（302）受到的阀腔压力与弹性元件（4）的弹力为叠加关系。
  2. 如权利要求1所述的滑板阀，其特征在于，阀座（3）的通孔从靠近滑板（11）的一端向外侧逐渐扩大，引压面（302）为阀座（3）的通孔的内壁面。
  3. 如权利要求2所述的滑板阀，其特征在于，所述阀体（1）的通孔从靠近阀座（3）的外侧的位置向外逐渐缩小。
  4. 如权利要求1所述的滑板阀，其特征在于，所述引压面（302）呈平整、内凹、外凸或波浪形的环面。
  5. 如权利要求1所述的滑板阀，其特征在于，所述引压面（302）通过引压孔（105）与阀腔连通，所述引压孔（105）开设在阀体（1）上，延伸至阀体（1）的通孔的内壁面，或者所述引压孔（105）开设在阀座（3）上，延伸至阀座（3）的通孔的内壁面，或者所述引压孔（105）开设在阀座（3）上，延伸至阀座（3）的密封工作面（301）。
  6. 如权利要求1至5中任一项所述的滑板阀，其特征在于，所述阀座为阀座环（3），所述阀体（1）内侧还设有向所述阀体（1）上通孔的外围延伸的第一凹槽（101），所述阀座环（3）嵌置在所述第一凹槽（101）内。
  7. 如权利要求6所述的滑板阀，其特征在于，还包括外刮环（14），所述阀体（1）内侧的表面还设有第二凹槽（102），所述第二凹槽（102）位于所述第一凹槽（101）的外围；所述外刮环（14）嵌置在所述第二凹槽（102）内，外刮环（14）内侧的密封工作面紧压所述滑板（11）。
  8. 如权利要求7所述的滑板阀，其特征在于，沿滑板（11）的运动方向，阀座环（3）的密封工作面的内沿与外刮环（14）的密封工作面的外沿之间的距离大于滑板（11）上的通孔的尺寸。
  9. 如权利要求7所述的滑板阀，其特征在于，还包括弹性体（15），设置在第二凹槽（102）的槽底，阀体（1）通过弹性体（15）将外刮环（14）内侧的密封工作面紧压在所述滑板（11）上。
  10. 如权利要求7至9中任一项所述的滑板阀，其特征在于，所述外刮环（14）为跑道形，直边沿滑板（11）的运动方向，直边的两端采用外凸的弧形连接。
  11. 如权利要求6至10中任一项所述的滑板阀，其特征在于，所述外刮环（14）和/或阀座环（3）的密封工作面上还镶嵌硬质或者软质材料制成的环形镶件。
  12. 如权利要求6至10中任一项所述的滑板阀，其特征在于，还包括环形的阀座环固定器（2），所述阀座环固定器（2）也嵌置在所述第一凹槽（101）内，所述阀座环固定器（2）还与所述阀体（1）固定连接，将所述阀座环（3）卡在所述阀体（1）与所述阀座环固定器（2）之间。
  13. 如权利要求6至10中任一项所述的滑板阀，其特征在于，所述阀盖（10）、阀体（1）、阀座环（3）和外刮环（14）都具有两个，且两个所述阀体（1）、阀座环（3）和外刮环（14）对应设置在所述滑板（11）的上下两侧，两个阀盖（10）分别固定连接两个所述阀体（1）的左右两端，且通过密封填料（13）密封所述滑板（11）与所述阀体（1）端部的连接处。
PCT/CN2012/073896 2011-04-14 2012-04-12 一种滑板阀 WO2012139504A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2011100939406A CN102182836B (zh) 2011-04-14 2011-04-14 一种滑板阀
CN2011100939497A CN102155548B (zh) 2011-04-14 2011-04-14 一种滑板阀
CN201110093949.7 2011-04-14
CN201110093940.6 2011-04-14

Publications (1)

Publication Number Publication Date
WO2012139504A1 true WO2012139504A1 (zh) 2012-10-18

Family

ID=47008825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/073896 WO2012139504A1 (zh) 2011-04-14 2012-04-12 一种滑板阀

Country Status (1)

Country Link
WO (1) WO2012139504A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180087673A1 (en) * 2016-09-28 2018-03-29 Fmc Technologies, Inc. Gate valve protector sleeve
CN110454582A (zh) * 2019-08-30 2019-11-15 中冶焦耐(大连)工程技术有限公司 一种焦炉荒煤气关闭阀及其安装检修方法
CN116473136A (zh) * 2023-05-19 2023-07-25 周宇涛 一种高效茶叶加工工艺

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013769A (en) * 1961-03-15 1961-12-19 Alexander S Volpin Pressure sealed valve
GB1000411A (en) * 1961-06-16 1965-08-04 Bryan Donkin Co Ltd Improvements in and relating to valves for controlling fluid flow
US4228988A (en) * 1977-10-28 1980-10-21 Kobe Steel, Limited Valve
JPS62233571A (ja) * 1986-03-31 1987-10-13 Kubota Ltd 摺動弁
CN2313109Y (zh) * 1997-06-11 1999-04-07 张家港市石化仪表厂 闸门阀的闸板密封装置
CN2386271Y (zh) * 1999-02-23 2000-07-05 汪国士 可调闸阀
CN102155548A (zh) * 2011-04-14 2011-08-17 张伟 一种滑板阀
CN102182836A (zh) * 2011-04-14 2011-09-14 张伟 一种滑板阀
CN201992104U (zh) * 2011-04-14 2011-09-28 张伟 一种滑板阀
CN202074059U (zh) * 2011-04-14 2011-12-14 张伟 一种滑板阀

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013769A (en) * 1961-03-15 1961-12-19 Alexander S Volpin Pressure sealed valve
GB1000411A (en) * 1961-06-16 1965-08-04 Bryan Donkin Co Ltd Improvements in and relating to valves for controlling fluid flow
US4228988A (en) * 1977-10-28 1980-10-21 Kobe Steel, Limited Valve
JPS62233571A (ja) * 1986-03-31 1987-10-13 Kubota Ltd 摺動弁
CN2313109Y (zh) * 1997-06-11 1999-04-07 张家港市石化仪表厂 闸门阀的闸板密封装置
CN2386271Y (zh) * 1999-02-23 2000-07-05 汪国士 可调闸阀
CN102155548A (zh) * 2011-04-14 2011-08-17 张伟 一种滑板阀
CN102182836A (zh) * 2011-04-14 2011-09-14 张伟 一种滑板阀
CN201992104U (zh) * 2011-04-14 2011-09-28 张伟 一种滑板阀
CN202074059U (zh) * 2011-04-14 2011-12-14 张伟 一种滑板阀

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180087673A1 (en) * 2016-09-28 2018-03-29 Fmc Technologies, Inc. Gate valve protector sleeve
US10378659B2 (en) * 2016-09-28 2019-08-13 Fmc Technologies, Inc. Gate valve protector sleeve
CN110454582A (zh) * 2019-08-30 2019-11-15 中冶焦耐(大连)工程技术有限公司 一种焦炉荒煤气关闭阀及其安装检修方法
CN110454582B (zh) * 2019-08-30 2023-08-25 中冶焦耐(大连)工程技术有限公司 一种焦炉荒煤气关闭阀及其安装检修方法
CN116473136A (zh) * 2023-05-19 2023-07-25 周宇涛 一种高效茶叶加工工艺

Similar Documents

Publication Publication Date Title
KR100558104B1 (ko) 유체 커플링
CA2586116C (en) Seal assembly for a fluid pressure control device
WO2011105824A2 (ko) 다중밀폐 나이프게이트 밸브
EP0484915A1 (en) Three-way valve
WO2012139504A1 (zh) 一种滑板阀
WO2006113340A3 (en) Stacked pieyoelectric diaphragm members
BRPI0816248B1 (pt) Aparelho de disco de vedação para uso com uma válvula e regulador de fluidos
CN110220007B (zh) 一种自补偿闸阀及应用
MX2011012617A (es) Aparato para asiento de valvula, para uso con valvulas para fluidos.
CN102155548B (zh) 一种滑板阀
US5482082A (en) Multi-passage fluid coupling and metal seal therefor
CN102182836B (zh) 一种滑板阀
CN104676012A (zh) 套筒阀双向平衡密封环组件
CN201992104U (zh) 一种滑板阀
WO2023116114A1 (zh) 一种防泄漏快速接头及液冷系统
CN111089113A (zh) 不完全平衡静压支撑盘的连接装置
CN211288825U (zh) 阀门密封结构及具有其的阀门
CN202074059U (zh) 一种滑板阀
CN201992106U (zh) 滑板阀
CN220668428U (zh) 一种阀板结构及闸阀
CN204610847U (zh) 套筒阀双向平衡密封环组件
JPH0440008Y2 (zh)
WO2019100206A1 (zh) 一种省力的按钮节水阀
CN212177904U (zh) 一种六自由度全浮动蝶阀结构
CN219888786U (zh) 一种轴向密封浮动球阀

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12770652

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 28/02/2014)

122 Ep: pct application non-entry in european phase

Ref document number: 12770652

Country of ref document: EP

Kind code of ref document: A1