WO2022148323A1 - 一种密封装置及阀体系统 - Google Patents

一种密封装置及阀体系统 Download PDF

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Publication number
WO2022148323A1
WO2022148323A1 PCT/CN2021/143861 CN2021143861W WO2022148323A1 WO 2022148323 A1 WO2022148323 A1 WO 2022148323A1 CN 2021143861 W CN2021143861 W CN 2021143861W WO 2022148323 A1 WO2022148323 A1 WO 2022148323A1
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WIPO (PCT)
Prior art keywords
expansion
sealing
cavity
sealing device
hole
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PCT/CN2021/143861
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English (en)
French (fr)
Inventor
樊文岷
张飞
汤龙刚
王刚
李卫敏
寇晓康
Original Assignee
西安蓝晓科技新材料股份有限公司
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Publication of WO2022148323A1 publication Critical patent/WO2022148323A1/zh

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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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0457—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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/18—Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
    • F16K5/188—Sealing effected by the flowing medium

Definitions

  • the invention relates to the technical field of valve body sealing, in particular to a sealing device and a valve body system.
  • the three most common devices used in industry for continuous ion exchange and adsorption are "carousel” turntable system, valve array system and multi-way valve device. Because the turntable system requires the turntable to drive the resin column containing resin to rotate as a whole, it cannot realize large-scale system production, and has the disadvantages of high manufacturing cost and difficult maintenance of the core components of the turntable, so it cannot be widely used in various application fields.
  • the valve array system can realize continuous operation by simulating resin movement through the multi-frequency switching of the valve when the resin column is not moving, but for the system with complex process, a large number of valves are required, and the system Control accuracy and safety requirements are very high.
  • the multi-way valve device drives the rotating disk in the fixed casing through the motor, and connects the feed pipe and the discharge pipe through the pipeline inside the rotary valve core, which realizes a continuous process in a complete sense without the movement of resin and resin column. process.
  • the multi-way valve device not only avoids the complexity and bulk of the turntable system, but also avoids many hidden dangers caused by the high frequency switching of the valve in the valve array system, and has been widely recognized and applied in the market.
  • a sealing gasket needs to be used to generate sealing force by relying on its own elasticity and pre-tightening force to achieve the above-mentioned sealing performance.
  • the expansion part when used, if the sealing force is large, the rotary valve will easily cause difficulty in rotation due to excessive resistance.
  • Some expansion piece structures are not suitable for multi-way valve devices, and are prone to problems such as leakage of medium in the pipeline or difficulty in rotating the valve body due to excessive resistance.
  • the technical problem to be solved by the present invention is that the expansion member structure in the prior art cannot be applied to the multi-way valve device, and the problems of medium leakage in the pipeline or difficulty in rotating the valve body due to excessive resistance are likely to occur.
  • the present invention provides a sealing device, comprising:
  • the sealing body is suitable for being installed on the housing body, the sealing body has an installation hole, the installation hole is suitable for matching with the pipe body to be sealed, and the sealing body has an installation cavity;
  • expansion piece is installed in the installation cavity, the expansion piece has an expansion cavity, and the driving piece communicates with the expansion cavity;
  • the expansion member has an expanded state in which the area of the expansion cavity expands under the driving of the driving member to drive the sealing body to deform toward the side of the pipe body to be sealed along the radial direction of the installation hole.
  • the installation cavity is an annular cavity
  • the expansion member is an annular expansion member
  • the annular expansion member is installed in the annular cavity
  • the annular cavity is arranged coaxially with the installation hole.
  • the cross-section of the expansion member is one of a circle, a square, a rectangle, a trapezoid, an M-shape, a D-shape, a C-shape, and a V-shape.
  • the material of the expansion member is natural rubber, synthetic rubber or composite rubber
  • the expansion part adopts one of silica gel, EPDM rubber, nitrile rubber, fluororubber, fluorosilicone rubber, perfluororubber, hydrogenated nitrile rubber, and fluororubber.
  • the driving member in the expanded state, is used to deliver a medium into the expansion cavity;
  • the medium is gaseous, and the medium is air or nitrogen; or the medium is liquid, and the medium is one of water and an inorganic salt solution.
  • the sealing body includes a communication hole, the communication hole communicates with the installation cavity, and the opening of the communication hole on the side away from the installation cavity is provided on the end surface of the sealing body .
  • the communication pipe is installed in the communication hole, and one end of the communication pipe is communicated with the expansion chamber; the other end of the communication pipe is suitable for connecting with the expansion chamber.
  • the driver is connected.
  • the above-mentioned sealing device further includes a blocking member, the blocking member is detachably disposed on the end of the communication pipe away from the expansion member, and the blocking member is suitable for connecting with the expansion member. It is enclosed with the connecting pipe to form a sealed space.
  • a valve body system comprising: a casing body and a plurality of pipes to be sealed, and the above-mentioned sealing device, the sealing body is installed between the casing body and the pipes to be sealed between.
  • the sealing body is further provided with a limit hole
  • the valve body system further includes a limit piece, and the limit piece is adapted to pass through the limit hole to communicate with the limit hole.
  • the housing body is locked.
  • the sealing device comprises: a driving part, a sealing body and an expansion part.
  • the sealing body is suitable for being installed on the housing body, the sealing body has an installation hole, the installation hole is suitable for matching with the pipe body to be sealed, the sealing body has an installation cavity;
  • the expansion part is installed in the In the installation cavity, the expansion piece has an expansion cavity, and the driving piece communicates with the expansion cavity;
  • the expansion piece has an area of the expansion cavity that expands under the driving of the driving piece to drive the sealing body along the edge.
  • the sealing device of this structure is communicated with the expansion member through the driving member.
  • the expansion member and the inner wall surface of the installation chamber abut against each other by increasing the area of the expansion chamber, and finally the installation chamber follows the deformation of the expansion member. Deformation will also occur.
  • the expansion member drives the sealing body to deform toward the installation hole; at this time, due to the deformation of the installation cavity, the sealing pressure of the sealing body to be sealed against the tube body will also increase, further improving the sealing body.
  • the sealing performance of the pipe body to be sealed ensures that there is no leakage at the connection of the process pipeline in the multi-way valve body.
  • the area of the expansion cavity can be adjusted and corrected in real time by the drive of the driving element, so as to avoid the deformation of the seal.
  • the problem of frequent leakage in addition, when the valve body structure needs to be switched and rotated, the medium in the expansion part is sucked by the drive of the driving part, so that the expansion cavity of the expansion part is reduced, so that only the sealing body is used to seal the pipeline and reduce the sealing effect.
  • the frictional resistance of the rotating valve at the same location can avoid the problem of difficult rotation of the rotary valve. Further, if the matching relationship between the to-be-sealed pipe body and the installation hole is a clearance fit, the frictional resistance is smaller.
  • FIG. 1 is a schematic structural diagram of a valve body system provided in an embodiment
  • FIG. 2 is a top view of the valve body system provided in the embodiment
  • FIG. 3 is a cross-sectional view of FIG. 2 along the C-C section;
  • Fig. 4 is the enlarged structural representation of circle A of Fig. 3;
  • Fig. 5 is the enlarged structural representation of Fig. 4 circle B;
  • Fig. 6 is the content and time relation diagram of lithium ion and magnesium ion in the flow outlet pipe in the comparative example
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • This embodiment provides a sealing device, as shown in FIG. 1 to FIG. 5 , including: a driving part, a sealing body 1 and an expansion part 2 .
  • the sealing body 1 is suitable for being installed on the housing body, the sealing body 1 has an installation hole 12, the installation hole 12 is suitable for matching with the pipe body to be sealed, and the sealing body 1 has an installation cavity 11;
  • the expansion piece 2 is installed in the installation cavity 11, the expansion piece 2 has an expansion cavity 21, and the driving piece communicates with the expansion cavity 21;
  • the expansion cavity 21 expands in area to drive the sealing body 1 to deform toward the side of the pipe body to be sealed along the radial direction of the installation hole 12 .
  • the installation cavity 11 is an annular cavity
  • the expansion member 2 is an annular expansion member 2
  • the annular expansion member 2 is installed in the annular cavity; the annular cavity and the installation hole 12 Coaxial setup.
  • the annular installation cavity 11 ensures that during the expansion process of the expansion member 2, the deformation driving force on the inner wall surface of the installation cavity 11 during the deformation process of the installation cavity 11 is the same, and further ensures that the sealing body 1 acts on the outer wall surface of the tube to be sealed.
  • the force is the same everywhere to avoid the leakage of the medium caused by uneven force on one side.
  • the expansion member 2 is M-shaped.
  • the cross-section of the expansion member 2 can also be circular, square, rectangular, trapezoidal, D-shaped, C-shaped, V-shaped, etc. , as long as it is ensured that the inner wall surface of the mounting hole 12 can be deformed under the driving of the driving member and the area of the expansion cavity 21 becomes larger.
  • the material of the expansion member 2 is natural rubber, synthetic rubber or composite rubber; for example, the expansion member 2 can be made of silicone, EPDM, NBR, fluororubber, fluorosilicone A kind of hydrogenated nitrile rubber and fluororubber.
  • the driving member is used to transport the medium into the expansion chamber 21; wherein, the medium can be a gas, and the medium is one of air, nitrogen, and inert gas.
  • the driving member is an air compressor, The air compressor cooperates with the opening and closing valve body to realize the filling or pressure relief of the gas in the expansion part 2; of course, in other optional embodiments, the medium is liquid, and the medium is water and inorganic salt solution.
  • the driving element can be the pump body.
  • the sealing body 1 includes a communication hole 13 , the communication hole 13 communicates with the installation cavity 11 , and the opening of the communication hole 13 on the side away from the installation cavity 11 is provided in the sealing body 1 on the end face.
  • the communication hole 13 is a cylindrical through hole.
  • a communication pipe 32 is also arranged between the driving member and the expansion member 2, the communication pipe 32 is installed in the communication hole 13, and one end of the communication pipe 32 is communicated with the expansion chamber 21; the communication pipe The other end of 32 is adapted to communicate with the driver.
  • the sealing device further includes a blocking member 31, the blocking member 31 is detachably disposed on the end of the communication pipe 32 away from the expansion member 2, and the blocking member 31 is suitable for connecting with the The expansion member 2 and the communication pipe 32 are enclosed as a sealed space.
  • the sealing device of this structure when the driving member communicates with the expansion member 2, when the rotary valve needs to be rotated in place, by increasing the area of the expansion chamber 21, the expansion member 2 and the inner wall surface of the installation chamber 11 abut each other, and finally the installation chamber 11. Along with the deformation of the expansion part 2, the deformation will also occur. Specifically, the expansion part 2 drives the sealing body 1 to deform in the direction of the installation hole 12; The sealing pressure of the valve body will also increase, which will further improve the sealing performance of the sealing body 1 to be sealed, and ensure that there is no leakage at the connection of the process pipeline in the multi-way valve body.
  • the size of the area is adjusted and corrected in real time, so as to avoid the problem of frequent leakage caused by the deformation of the seal; in addition, when the valve body structure needs to be switched and rotated, the medium in the expansion part 2 is sucked by the drive of the driving part, so that the expansion part 2
  • the expansion chamber 21 is reduced, so that only the sealing body 1 seals the pipeline, reducing the rotational frictional resistance at the seal, and avoiding the problem of difficult rotation of the rotary valve. In the case of clearance fit, the frictional resistance is smaller.
  • valve body system As shown in FIG. 1 , FIG. 2 and FIG. 3 , the valve body system in this embodiment is a multi-way valve, wherein the valve body system includes a housing body, a rotary driver 8 , a rotary Disc 6 and the seal provided in Example 1.
  • the rotary driver 8 is connected to the rotary disk 6 , and the rotary driver 8 drives the rotary disk 6 to rotate along the casing body 5 .
  • Several annular circulation passages 7 are arranged between the casing body 5 and the rotary disk 6 .
  • the casing body 5 There is a circulation inlet pipe 51 and a circulation outlet pipe 52 on it, and a transition passage 61 is arranged in the rotating disk 6.
  • the medium enters the circulation pipe from the circulation inlet pipe 51, and flows out to the circulation outlet pipe 52 along the transition pipe.
  • the circulation outlet pipe 52 and The external container is connected, the sealing device is installed on the flow outlet pipe 52 , the flow outlet pipe 52 is installed in the installation hole 12 , and the sealing body 1 is installed on the housing body 5 .
  • the rotary driver 8 is a motor.
  • the use process of the sealing device in this embodiment is as follows.
  • the air compressor is turned on.
  • the valve body system starts to run.
  • the blocking member 31 will be opened to discharge the pressure until the corresponding current of the rotary driver 8 is up to the normal value.
  • the valve body system can indirectly reflect the pressure of the valve body system according to the corresponding current of the rotary driver 8, so as to automatically adjust the opening and closing of the filling or unloading valve, and realize the function of automatically adjusting the pressure.
  • the sealing body 1 is further provided with a limiting hole 14
  • the valve body system further includes a limiting member 4
  • the limiting member 4 is adapted to pass through the limiting hole 14 to communicate with the limiting member 4 .
  • the housing body 5 is locked.
  • the limiting hole 14 is a circular through hole in cross section, and the limiting member 4 is a hexagonal bolt. The arrangement of the limiting member 4 and the limiting hole 14 further ensures the reliability of the connection between the housing body 5 and the sealing body 1 .
  • a multi-way valve device with a valve port diameter of 1 inch in the shell body is used to conduct combined tests on the material of the expansion part 2, the filling medium and the sealing cross-sectional shape of the expansion part 2.
  • the selection of driving parts is selected according to the different filling media, for example, the gas medium is operated by an air compressor, and the liquid medium is operated by a pump.
  • an aqueous solution containing 300 ppm of calcium ions, an aqueous solution containing 200 ppm of zinc ions, and an aqueous solution containing 100 ppm of copper ions are respectively circulated in the three circulation pipes.
  • the contents of calcium ions, zinc ions and copper ions in the effluent in the three flow outlet pipes 52 are regularly detected, so as to determine whether there is a problem of material leakage or stringing in the system.
  • the system runs continuously 24 hours a day, and after 6 months of testing, there is no obvious leakage or damage to the sealing device in the valve body system, which further proves the stability, reliability and operability of the sealing device.
  • the material of the expansion member 2 is silicone rubber, which is more suitable for the sealing of the multi-way valve device used in this embodiment, regardless of whether the filling medium is air, helium or 10% sodium chloride solution. , all need to keep the pressure not more than 0.3MPa to achieve the safe and stable operation of the system.
  • the cross-sectional shape of the sealing ring is square and M-shaped, which can fit closely with the sealing end face of the multi-way valve, and better achieve the sealing effect, and the pressure does not exceed 0.2MPa.
  • the rotary drive drives the rotary disk to rotate, and the three circulation inlet pipes are respectively fed and circulated to the circulation outlet pipe through three annular passages and three transition passages respectively.
  • the three circulation inlet pipes respectively circulate brine raw materials, low magnesium water and desalinated water.
  • the annular passage of the brine raw material is arranged between the annular passage where the low magnesium water is located and the annular passage where the desalinated water is located. material detection.
  • Line A The valve port diameter of the shell body in the valve body system is 1.5 inches, and the original system has its own sealing strip and device, and the change curve of lithium ion content and time;
  • Line B The valve port diameter of the shell body in the valve body system is 1.5 inches, and the original system has its own sealing strip and device, and the change curve of magnesium ion content and time;
  • Line C The valve port diameter of the shell body in the valve body system is selected to be 1.5 inches, the original sealing strip is removed, and the sealing device of the present invention is used instead, and the change curve of the content of lithium ions and time;
  • Line D the valve port diameter of the shell body in the valve body system is selected to be 1.5 inches, the original sealing strip is removed, and the sealing device of the present invention is used instead, and the change curve of the content of magnesium ions and time;
  • the sealing device used, the sealing body 1 and the expansion part 2 are all made of silicone material, the driving part is air compressor, and the medium for boosting in the expansion chamber 21 is air, and the M-shaped sealing ring is used. , after the expansion part 2 is filled with air through the air compressor, the pressure is maintained at 0.5Mpa.
  • the data shows that both the C line and the D line represent the use of the sealing device in this application, and the product quality remains stable and does not fluctuate when the system operates for more than 400 hours.
  • the line A and line B using the original device have fluctuations of lithium ions and magnesium ions at 60h, 180h, and 192h, respectively.
  • the brine string entered the product of the detection tube body.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Abstract

公开了一种密封装置，包括：驱动件、密封本体（1）以及膨胀件（2）；密封本体（1）安装在壳体本体上，密封本体（1）具有安装孔（12），安装孔（12）适于与待密封管体配合，密封本体（1）具有安装腔（11）；膨胀件（2）安装在安装腔内，膨胀件（2）具有膨胀腔（21），驱动件与膨胀腔（21）连通；膨胀件（2）具有在驱动件的驱动下、膨胀腔面积扩大以带动密封本体沿安装孔的径向方向朝向待密封管体一侧变形的膨胀状态，密封本体对待密封管体的密封压力也将增大，保证多路阀体内工艺管道连接处无泄漏产生；此外，当阀体结构需要切换旋转时，膨胀件不进行膨胀，仅通过密封本体对管道进行密封，降低密封处的转动摩擦阻力，避免旋转阀出现转动困难的问题。还公开了包括该密封装置的阀体系统。

Description

一种密封装置及阀体系统
交叉引用
本申请要求在2021年1月8日提交中国专利局、申请号为202110024592.0、发明名称为“一种密封装置及阀体系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及阀体密封技术领域，具体涉及一种密封装置及阀体系统。
背景技术
目前工业上用于连续离子交换及吸附的装置以“旋转木马”转盘式系统、阀阵式系统以及多路阀装置三种最为常见。转盘式系统由于需要转盘带动装有树脂的树脂柱整体转动，存在不能实现体量较大的系统生产以及转盘核心部件制造成本高和检修困难的弊病，无法广泛使用于各个应用领域。阀阵式系统虽然可以在树脂柱不动的情况下，通过阀门的多频次切换模拟树脂移动从而实现连续化运行，但对于工艺复杂的体系而言，需要用到大量的阀门，且对系统的控制精准性及安全性要求非常高。多路阀装置通过马达带动固定壳体内的旋转盘，将进料管和排料管通过旋转阀芯内部的管路连通，无需树脂及树脂柱的移动就实现了完全意义上的连续式的工艺过程。多路阀装置既避免了转盘式系统的复杂和庞大，又避免了阀阵式系统因阀门高频次切换带来的诸多隐患，在市场上得到了广泛的认可和应用。
现有的多路阀装置，由于旋转阀在旋转过程中为了实现密封性能，需要使用密封垫圈依靠自身弹性和预紧力产生密封力实现上述密封性能。但是膨胀件使用时，若密封力较大则旋转阀由于阻力过大容易造成旋转困难的问题，但是若密封力过小，则阀体管路内存在泄漏以及内部串料的风险；因此，现有的膨胀件结构无法适用于多路阀装置，容易出现管道内介质泄漏或是由于阻力过大阀体旋转困难的问题。
发明内容
因此，本发明所要解决的技术问题在于现有技术中的膨胀件结构无法适用于多路阀装置，容易出现管道内介质泄漏或是由于阻力过大阀体旋转困难的问题。
为此，根据本发明的一个方面，本发明提供一种密封装置，包括：
驱动件；
密封本体，所述密封本体适于安装在壳体本体上，所述密封本体具有安装孔，所述安 装孔适于与待密封管体配合，所述密封本体具有安装腔；
膨胀件，所述膨胀件安装在所述安装腔内，所述膨胀件具有膨胀腔，所述驱动件与所述膨胀腔连通；
所述膨胀件具有在驱动件的驱动下、所述膨胀腔面积扩大以带动所述密封本体沿所述安装孔的径向方向朝向所述待密封管体一侧变形的膨胀状态。
可选地，上述的密封装置，所述安装腔呈环形腔体，所述膨胀件为环形膨胀件，所述环形膨胀件安装在所述环形腔体内。
可选地，上述的密封装置，所述环形腔体与所述安装孔同轴设置。
可选地，上述的密封装置，所述膨胀件的横截面呈圆形、方形、矩形、梯形、M形、D形、C型、V型中的一种。
可选地，上述的密封装置，膨胀件的材质为天然橡胶或合成橡胶或复合橡胶；
所述膨胀件采用硅胶、三元乙丙橡胶、丁晴橡胶、氟橡胶、氟硅橡胶、全氟橡胶、氢化丁晴橡胶、包氟橡胶中的一种。
可选地，上述的密封装置，在所述膨胀状态下，所述驱动件用于向所述膨胀腔内输送介质；
所述介质为气态，所述介质为空气或氮气；或所述介质为液态，所述介质为水和无机盐溶液中的一种。
可选地，上述的密封装置，所述密封本体包括连通孔，所述连通孔与所述安装腔连通，所述连通孔远离所述安装腔一侧的开口设置在所述密封本体的端面上。
所述驱动件和所述膨胀件之间还设有连通管道，所述连通管道安装在所述连通孔内，所述连通管道的一端与膨胀腔连通；所述连通管道的另一端适于与驱动件连通。
可选地，上述的密封装置，还包括封堵件，所述封堵件可拆卸地设置在所述连通管道远离所述膨胀件的一端上，所述封堵件适于与所述膨胀件和连通管道围合为密封空间。
根据本发明的另一个方面，提供一种阀体系统，包括：壳体本体和若干待密封管道，以及上述的密封装置，所述密封本体安装在所述壳体本体和所述待密封管道之间。
可选地，上述的阀体系统，所述密封本体上还设有限位孔，所述阀体系统还包括限位件，所述限位件适于穿过所述限位孔以与所述壳体本体锁定。
本发明提供的技术方案，具有如下优点：
1.本发明提供的密封装置，包括：驱动件、密封本体以及膨胀件。其中，所述密封本体适于安装在壳体本体上，所述密封本体具有安装孔，所述安装孔适于与待密封管体配合， 所述密封本体具有安装腔；所述膨胀件安装在所述安装腔内，所述膨胀件具有膨胀腔，所述驱动件与所述膨胀腔连通；所述膨胀件具有在驱动件的驱动下，所述膨胀腔面积扩大以带动所述密封本体沿所述安装孔的径向方向朝向所述待密封管体一侧变形的膨胀状态。
此结构的密封装置，通过驱动件与膨胀件连通，当旋转阀旋转到位后，通过增大膨胀腔的面积，膨胀件与安装腔的内壁面相互抵接，最终安装腔随着膨胀件的变形也将发生变形，具体来说，膨胀件驱动密封本体朝向安装孔方向发生形变；此时，由于安装腔体发生形变，因此密封本体对待密封管体的密封压力也将增大，进一步提高密封本体对待密封管体的密封性能，保证多路阀体内工艺管道连接处无泄漏产生，在膨胀状态下，可以通过驱动件的驱动，对膨胀腔面积大小实时调整和修正，从而避免由于密封变形而导致泄漏频发的问题；此外，当阀体结构需要切换旋转时，通过驱动件的驱动抽吸膨胀件内的介质，使得膨胀件的膨胀腔缩小，使得仅通过密封本体对管道进行密封，降低密封处的转动摩擦阻力，避免旋转阀出现转动困难的问题，进一步地，若待密封管体与安装孔之间配合关系为间隙配合时，则摩擦阻力更小。通过驱动件和膨胀件的配合，实现对管体与密封结构之间的增压和卸压的动作，从而保证阀体系统正常运行，避免停机检修。
2.通过长期工业化运行也发现，当多路阀系统运行压力超过0.3Mpa时，设备会因密封问题而明显出现漏液及串料情况，在一些处理要求精度较高的领域存在较大的风险，而采用目前的密封方式难以从根本上改变密封效果。通过采用上述的密封装置，使得阀体结构的运行压力可达到0.5Mpa以上，并且通过实验发现，采用本密封装置的的阀体系统，不会出现泄漏串料的问题。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为实施例中所提供的阀体系统的结构示意图；
图2为实施例中所提供的阀体系统的俯视图；
图3为图2沿C-C截面的剖视图；
图4为图3圈A的放大结构示意图；
图5为图4圈B的放大结构示意图；
图6为对比例中流通出口管内锂离子以及镁离子的含量与时间关系图；
附图标记说明：
1-密封本体；11-安装腔；12-安装孔；13-连通孔；14-限位孔；
2-膨胀件；21-膨胀腔；
31-封堵件；32-连通管道；
4-限位件；
5-壳体本体；51-流通进口管；52-流通出口管；
6-旋转盘；61-过渡通路；
7-环流通路；
8-旋转驱动器；
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
实施例1
本实施例提供一种密封装置，如图1至图5所示，包括：驱动件、密封本体1以及膨胀件2。其中，所述密封本体1适于安装在壳体本体上，所述密封本体1具有安装孔12，所述安装孔12适于与待密封管体配合，所述密封本体1具有安装腔11；所述膨胀件2安 装在所述安装腔11内，所述膨胀件2具有膨胀腔21，所述驱动件与所述膨胀腔21连通；所述膨胀件2具有在驱动件的驱动下，所述膨胀腔21面积扩大以带动所述密封本体1沿所述安装孔12的径向方向朝向所述待密封管体一侧变形的膨胀状态。
具体来说，所述安装腔11为环形腔体，所述膨胀件2为环形膨胀件2，所述环形膨胀件2安装在所述环形腔体内；所述环形腔体与所述安装孔12同轴设置。
呈环形的安装腔11保证膨胀件2膨胀过程中，对于安装腔11变形过程中对安装腔11的内侧壁面的变形驱动力相同的，进一步保证密封本体1作用在待密封管体外壁面上的密封力的各处是相同的，避免出现单侧受力不均，造成的介质泄露。
本实施例中膨胀件2采用M型，当然，在其他可选的实施方式中，膨胀件2的横截面也可以处采用圆形、方形、矩形、梯形、D形、C型、V型等，只要保证可以在驱动件的驱动下，且膨胀腔21的面积变大时带动安装孔12的内壁面发生变形即可。
本实施例中，膨胀件2的材质为天然橡胶或合成橡胶或复合橡胶；例如，膨胀件2可以采用硅胶、三元乙丙橡胶、丁晴橡胶、氟橡胶、氟硅橡胶、全氟橡胶、氢化丁晴橡胶、包氟橡胶中的一种。
所述驱动件用于向所述膨胀腔21内输送介质；其中，所述介质可以为气体，所述介质为空气、氮气、惰性气体中的一种，此时，驱动件为空压机，空压机通过与开合阀体相互配合，实现膨胀件2内气体的填充或者泄压；当然在其他可选的实施方式中，所述介质为液态，所述介质为水和无机盐溶液中的一种，例如驱动件可以为泵体。
本实施例中，所述密封本体1包括连通孔13，所述连通孔13与所述安装腔11连通，所述连通孔13远离所述安装腔11一侧的开口设置在所述密封本体1的端面上。具体来说连通孔13为圆柱形通孔。
所述驱动件和所述膨胀件2之间还设有连通管道32，所述连通管道32安装在所述连通孔13内，所述连通管道32的一端与膨胀腔21连通；所述连通管道32的另一端适于与驱动件连通。
本实施例中，密封装置还包括封堵件31，所述封堵件31可拆卸地设置在所述连通管道32远离所述膨胀件2的一端上，所述封堵件31适于与所述膨胀件2和连通管道32围合为密封空间。
此结构的密封装置，通过在驱动件与膨胀件2连通，当需要旋转阀旋转到位后，通过增大膨胀腔21的面积，膨胀件2与安装腔11的内壁面相互抵接，最终安装腔11随着膨胀件2的变形也将发生变形，具体来说，膨胀件2驱动密封本体1朝向安装孔12方向发生 形变；此时，由于安装腔11体发生形变，因此密封本体1对待密封管体的密封压力也将增大，进一步提高密封本体1对待密封管体的密封性能，保证多路阀体内工艺管道连接处无泄漏产生，在膨胀状态下，可以通过驱动件的驱动，对膨胀腔21面积大小实时调整和修正，从而避免由于密封变形而导致泄漏频发的问题；此外，当阀体结构需要切换旋转时，通过驱动件的驱动抽吸膨胀件2内的介质，使得膨胀件2的膨胀腔21缩小，使得仅通过密封本体1对管道进行密封，降低密封处的转动摩擦阻力，避免旋转阀出现转动困难的问题，进一步地，若待密封管体与安装孔之间配合关系为间隙配合时，则摩擦阻力更小。通过驱动件和膨胀件2的配合，实现对管体与密封结构之间的增压和卸压的动作，从而保证阀体系统正常运行，避免停机检修。
实施例2
本实施例提供一种阀体系统，如图1、图2和图3所示，本实施例中的阀体系统为多路阀，其中，阀体系统包括壳体本体、旋转驱动器8、旋转盘6以及实施例1中所提供的密封装置。其中，旋转驱动器8与旋转盘6连接，旋转驱动器8带动旋转盘6沿壳体本体5内转动，壳体本体5与旋转盘6之间设有若干呈环形的环流通路7，壳体本体5上设有流通进口管51和流通出口管52，旋转盘6内设有过渡通路61，介质由流通进口管51进入环流管路，并沿过渡管路向流通出口管52流出，流通出口管52与外界容器连通，密封装置安装在流通出口管52上，流通出口管52安装在安装孔12内，密封本体1安装在壳体本体5上。本实施例中，旋转驱动器8为电机。
本实施例中密封装置的使用过程如下，当阀体系统安装就位，需要充气时，空压机开启，开合阀体由于外部压力的作用打开，空压机通过连通管道32与膨胀件2连通，并对膨胀腔21进行充气，当阀体系统的旋转驱动器8对应电流在工作区间时，停止对膨胀腔21充气。阀体系统开始运行，当运行过程中，由于阀体系统的运行的磨损或挤压，当阀体系统压力过高时，此时，会打开封堵件31排放压力直至旋转驱动器8对应电流为正常值为止。阀体系统可根据旋转驱动器8对应电流来间接反映阀体系统的压力，从而自动调节填充或卸放阀的开闭，实现自动调节压力的功能。
本实施例中，所述密封本体1上还设有限位孔14，所述阀体系统还包括限位件4，所述限位件4适于穿过所述限位孔14以与所述壳体本体5锁定。限位孔14截面呈圆形的通孔，限位件4为六角螺栓。限位件4与限位孔14的设置，进一步保证壳体本体5与密封本体1连接的可靠性。
实验例
本实验例采用壳体本体阀口直径1英寸的多路阀装置，分别对膨胀件2材质、填充介质及膨胀件2的密封截面形状进行组合测试。驱动件的选用依据填充介质不同进行选择，例如气体介质采用空压机操作，液体介质采用泵操作。
本实施例中，三个流通管路中分别流通含有钙离子300ppm的水溶液、含锌离子200ppm的水溶液以及含铜离子100ppm的水溶液。运行过程中定期检测三个流通出口管52中流出液中钙离子、锌离子、铜离子含量，从而判断系统是否存在漏料或串料问题。
Figure PCTCN2021143861-appb-000001
系统每天24小时连续运行，经过长达6个月时间测试，阀体系统均未出现明显的泄漏或密封装置损坏问题，进一步证明密封装置的稳定可靠，具有可操作性。同时根据系统的压力数据可以看出，膨胀件2材质为硅橡胶更适合于本实施例中采用的多路阀装置的密封，而无论充填介质为空气，氦气还是10％的氯化钠溶液，都需要保持压力不超过0.3MPa，以实现系统的安全稳定运行。密封圈截面形状为方形和M型能与多路阀密封端面贴合紧密，更好的实现密封效果，压力不超过0.2MPa。
对比例
旋转驱动器带动旋转盘转动，三个流通进口管分别进料，并分别通过三个环形通路、三个过渡通路向流通出口管流通。具体来说，三个流通进口管分别流通卤水原料、低镁水、脱盐水。其中卤水原料的环形通路设置在低镁水所在的环形通路和脱盐水所在的环形通路之间，本对比例用于对采用现有的密封装置与本申请提供的密封装置的阀体系统中串料检测。
流通出口管内锂离子以及镁离子的含量与时间的关系图如图6所示。
A线：选用阀体系统中壳体本体的阀口直径1.5英寸，采用原有系统自带密封条及装置，锂离子的含量与时间的变化曲线；
B线：选用阀体系统中壳体本体的阀口直径1.5英寸，采用原有系统自带密封条及装置，镁离子的含量与时间的变化曲线；
C线：选用阀体系统中壳体本体的阀口直径1.5英寸，拆除原密封条，改用本发明的密封装置，锂离子的含量与时间的变化曲线；
D线：选用阀体系统中壳体本体的阀口直径1.5英寸，拆除原密封条，改用本发明的密封装置，镁离子的含量与时间的变化曲线；
无论是C线还是D线，其采用的密封装置，密封本体1和膨胀件2均采用硅胶材质，驱动件采用空压机以及膨胀腔21内的提冲的介质为空气，采用M形密封圈，膨胀件2通过空压机填充空气后，压力保持在0.5Mpa。
数据表明，C线和D线均表示使用本申请中的密封装置，在系统运行400多个小时，产品质量仍保持稳定，并且未出现波动。而采用原有装置的A线和B线分别在系统运行60h、180h、192h出现锂离子和镁离子的波动，尤其是180h时锂离子和镁离子出现了突然的异常升高，表明此时由于系统密封故障卤水串料进入了检测管体的产品中。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。

Claims (10)

  1. 一种密封装置，其特征在于，包括
    驱动件；
    密封本体，所述密封本体适于安装在壳体本体上，所述密封本体具有安装孔，所述安装孔适于与待密封管体配合，所述密封本体具有安装腔；
    膨胀件，所述膨胀件安装在所述安装腔内，所述膨胀件具有膨胀腔，所述驱动件与所述膨胀腔连通；
    所述膨胀件具有在驱动件的驱动下，所述膨胀腔面积扩大以带动所述密封本体沿所述安装孔的径向方向朝向所述待密封管体一侧变形的膨胀状态。
  2. 根据权利要求1中所述的密封装置，其特征在于，
    所述安装腔呈环形腔体，所述膨胀件为环形膨胀件，所述环形膨胀件安装在所述环形腔体内。
  3. 根据权利要求2中所述的密封装置，其特征在于，
    所述环形腔体与所述安装孔同轴设置。
  4. 根据权利要求1-3中任一项所述的密封装置，其特征在于，
    所述膨胀件的横截面呈圆形、方形、矩形、梯形、M形、D形、C型、V型中的一种。
  5. 根据权利要求1-3中任一项所述的密封装置，其特征在于，
    膨胀件的材质为天然橡胶或合成橡胶或复合橡胶；
    所述膨胀件采用硅胶、三元乙丙橡胶、丁晴橡胶、氟橡胶、氟硅橡胶、全氟橡胶、氢化丁晴橡胶、包氟橡胶中的一种。
  6. 根据权利要求1-3中任一项所述的密封装置，其特征在于，在所述膨胀状态下，所述驱动件用于向所述膨胀腔内输送介质；
    所述介质为气态，所述介质为空气或氮气；或所述介质为液态，所述介质为水和无机盐溶液中的一种。
  7. 根据权利要求1-3中任一项所述的密封装置，其特征在于，
    所述密封本体包括连通孔，所述连通孔与所述安装腔连通，所述连通孔远离所述安装腔一侧的开口设置在所述密封本体的端面上；
    所述驱动件和所述膨胀件之间还设有连通管道，所述连通管道安装在所述连通孔内，所述连通管道的一端与膨胀腔连通；所述连通管道的另一端适于与驱动件连通。
  8. 根据权利要求7中所述的密封装置，其特征在于，
    还包括封堵件，所述封堵件可拆卸地设置在所述连通管道远离所述膨胀件的一端上，所述封堵件适于与所述膨胀件和连通管道围合为密封空间。
  9. 一种阀体系统，其特征在于，包括：
    壳体本体和若干待密封管道，以及权利要求1-8中任一项所述的密封装置，所述密封本体安装在所述壳体本体和所述待密封管道之间。
  10. 根据权利要求9中所述的阀体系统，其特征在于，
    所述密封本体上还设有限位孔，所述阀体系统还包括限位件，所述限位件适于穿过所述限位孔以与所述壳体本体锁定。
PCT/CN2021/143861 2021-01-08 2021-12-31 一种密封装置及阀体系统 WO2022148323A1 (zh)

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