WO2013097431A1 - 一种过流保护阀 - Google Patents

一种过流保护阀 Download PDF

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Publication number
WO2013097431A1
WO2013097431A1 PCT/CN2012/077732 CN2012077732W WO2013097431A1 WO 2013097431 A1 WO2013097431 A1 WO 2013097431A1 CN 2012077732 W CN2012077732 W CN 2012077732W WO 2013097431 A1 WO2013097431 A1 WO 2013097431A1
Authority
WO
WIPO (PCT)
Prior art keywords
water outlet
sliding sleeve
water
wall
valve
Prior art date
Application number
PCT/CN2012/077732
Other languages
English (en)
French (fr)
Inventor
袁训平
汤志强
Original Assignee
珠海铂鸥卫浴用品有限公司
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
Application filed by 珠海铂鸥卫浴用品有限公司 filed Critical 珠海铂鸥卫浴用品有限公司
Priority to US14/124,335 priority Critical patent/US9097352B2/en
Publication of WO2013097431A1 publication Critical patent/WO2013097431A1/zh

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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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/34—Excess-flow valves in which the flow-energy of the flowing medium actuates the closing mechanism
    • 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
    • F16K5/06—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 spherical surfaces; Packings therefor
    • F16K5/061—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 spherical surfaces; Packings therefor knee-joint
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7794—With relief valve

Definitions

  • the present invention relates to an overcurrent protection valve, and more particularly to an overcurrent protection valve for automatically closing in a waterway when a pipeline is broken.
  • Water is an important natural resource for human life. In the life of centuries, water is indispensable all the time. With the development of modern society, water resources are becoming scarcer, and water conservation has become a topic of increasing concern.
  • the water supply system is mainly constructed through a water supply line, and is controlled at the water terminal by a switch valve. At this time, the valve of the water terminal needs to carry a certain water pressure. When the valve is damaged, the water will spew out, causing a large waste of water resources. If it is not handled in time, it will not only cause a lot of waste of water resources, but also cause damage to other property.
  • a compressed natural gas pipeline over-current protection valve is disclosed in the Chinese patent document 2615459Y, including a joint, a valve body, a valve spring, and a valve moving core.
  • the lower end of the valve body is screwed into the hollow joint by an internal thread, and the center of the valve body is cylindrical.
  • a valve moving core with a vent hole is arranged in the cylindrical chamber, a conical valve seat is arranged above the moving core of the valve, a valve spring is arranged in the movable core casing of the valve, and an overflow hole is arranged on the upper part of the valve moving core
  • Above the cylindrical chamber there is an axially deflated circular groove and a hollow groove perpendicular thereto, and a return venting bolt is arranged in the venting circular groove, and a thread is arranged on the outer surface of the hollow groove.
  • the over-current protection valve described in the technical solution can automatically close the air outlet according to the gas flow rate and the differential pressure when the installation pipeline is broken or damaged, thereby avoiding leakage of high-pressure gas, improving safety of use, and reducing The purpose of the accident loss.
  • this type of valve since the water is in a liquid state, no high-pressure gas molecules diffuse rapidly, and when the valve is opened, water forms a large pressure at one end of the valve moving core, and the overflow hole is small.
  • the valve can not be activated, so the valve core can easily move upwards under the action of water pressure, blocking the outlet. Therefore, the valve is not suitable for waterway control.
  • the pressure is mainly concentrated on the top of the valve moving core, and the force receiving area is small, which can provide sufficient pressure in the high-pressure natural gas pipeline, and in the general waterway system, due to the force If the area is small, the pressure for exerting the effect is small, which is not conducive to tightly sealing the outlet, and the reliability is lowered.
  • the technical problem to be solved by the present invention is that in the prior art, when the overcurrent protection valve in the natural gas pipeline is opened, the outlet is easily blocked, and there is also insufficient pressure when the outlet is blocked. The situation does not apply to waterway control, thus proposing an overcurrent protection valve for waterway control.
  • the present invention provides an overcurrent protection valve, a valve body is formed, a valve cavity is formed in the valve body, and two sides of the valve body are provided with a water inlet end and a water outlet end, and an opening and closing member is disposed at the water inlet end of the valve cavity, and the opening and closing member Sealingly connecting a flow guiding column, the inside of the guiding column is connected to the water inlet end through the opening and closing member, and the first water outlet and the second water outlet are arranged on the flow guiding column along the water flow direction;
  • the sliding guide sleeve is provided with a sliding sleeve, and the top sealing of the sliding sleeve is provided with a plug for sealing the water outlet end; the middle portion of the sliding sleeve is a sliding wall sleeved outside the guiding column.
  • a water flow passage is formed between the sliding wall and the inner wall of the valve body, and the sliding wall is provided with a water outlet hole that can communicate with the secondary water outlet when moving up and down; a bottom shoulder of the sliding sleeve and the diversion
  • the outer wall of the column is connected to the inner wall of the valve body, and the bottom shoulder is provided with an elastic member for supplying pressure thereto, and a cavity communicating with the first-stage water outlet is provided below the bottom shoulder.
  • the sliding sleeve moves upward to the water outlet hole of the sliding wall to communicate with the secondary water outlet of the guiding column, and the plug of the sliding sleeve top does not contact the water outlet end;
  • a top water outlet is provided at the top of the flow guide column.
  • the secondary water outlet and the primary water outlet are respectively symmetrically arranged 2-6 in the radial direction.
  • the bottom shoulder of the sliding sleeve is at an upper portion of the secondary water outlet.
  • a pressure relief hole is disposed on the valve body, and the pressure relief hole communicates with the inside of the flow guiding column, and a pressure relief seal is sealingly disposed at the pressure relief hole.
  • the plug is a boss that gradually increases in cross-sectional area from top to bottom, and a serpentine seal ring is disposed at a bottom of the boss.
  • the opening and closing member is an active ball valve, and the movable ball valve is controlled by a handle.
  • a fixing sleeve is disposed between the flow guiding column and the sliding sleeve, and outside the guiding column.
  • the elastic member is a compression spring, one end of the spring is disposed on the bottom shoulder, and the other portion is fixed on the valve body.
  • the water inlet end is provided with an opening and closing member, the opening and closing member is sealingly connected to a flow guiding column, and the inside of the guiding current column passes through the opening and closing member and the The inlet end is connected, so that the water coming in from the inlet end flows into the diversion column through the opening and closing member, and the diversion column is provided with a first-stage water outlet and a second-stage water outlet in the direction of the water flow, the diversion A sliding sleeve is provided on the outer side of the column.
  • the over-current protection valve of the present invention pushes the sliding sleeve upward through the first-stage water outlet on the diversion column when entering the water, so that the sliding sleeve does not move up quickly and the water outlet end can not be blocked.
  • the overcurrent protection valve according to the present invention includes three states, the initial state is a state when the opening and closing member is not opened, and the water in the diversion column flows through the first-stage water outlet when opening.
  • the first working state is a state in which the overcurrent protection valve is in normal working condition, water can flow from the inlet end into the diversion column, and the secondary outlet hole flows out of the diversion column into the valve cavity outside the diversion column, and then The water outlet flows out.
  • the third working state is the state of the overcurrent protection. When the pipeline connected to the outlet end is broken or damaged, and the water pressure is lowered, the sliding sleeve moves up to seal the outlet end, thereby realizing the function of overcurrent protection. The purpose of saving water resources has been achieved.
  • the overcurrent protection valve according to the present invention has a top water outlet at the top of the flow guiding column, and water flows into the flow guiding column when the opening and closing member is opened, and can flow out through the water outlet at the top. Applying pressure to the top of the sliding sleeve to provide upward pressure to the sliding sleeve simultaneously with water at the bottom shoulder to ensure smooth sliding movement of the sliding sleeve. Moreover, since the water outlet area provided by the top water outlet and the first water outlet is small, the sliding sleeve is not directly pushed to the water outlet to block the water outlet end.
  • the overcurrent protection valve of the present invention the secondary water outlet and the first water outlet are symmetrically arranged 2-6 in the radial direction, and the area of the primary water outlet ensures that the valve is just opened. The sliding sleeve will not be blocked by the excessive pressure and the water outlet will be blocked. The water outlet area of the secondary outlet ensures that the water supply can be provided when the valve is working normally.
  • the overcurrent protection valve according to the present invention in the second working state, the bottom shoulder of the sliding sleeve is at the upper part of the secondary water outlet, so that when the pressure at the outlet end is lowered, The secondary water outlet is first cut during the upward movement of the sliding sleeve, and the water in the guiding column can no longer flow into the cavity communicating with the water outlet end, thereby reducing the water pressure at the water outlet end, and then the plug at the top of the sliding sleeve is again The outlet end is blocked and the overcurrent protection function is successfully realized.
  • the plug is a boss that gradually increases in cross-sectional area from top to bottom, and a crucible seal or a flat washer is disposed at a bottom of the boss
  • a crucible seal or a flat washer is disposed at a bottom of the boss
  • the elastic member is a spring
  • one end of the spring is disposed on the bottom shoulder
  • the other portion is fixed on the valve body, and the spring will The sliding sleeve is pressed against the valve body to ensure that the overall structure of the valve is tight and no sloshing occurs.
  • FIG 1 is an initial state diagram of an overcurrent protection valve according to the present invention.
  • Figure 3 is a second operational view of the overcurrent protection valve of the present invention.
  • the reference numerals in the figures are: 1-valve body, 2-inlet end, 3-outlet end, 4-active ball valve, 41-handle, 5-lead column, 52-fixing sleeve, 6-- Stage outlet, 7-stage outlet, 8-slider, 81-plug, 82-sliding wall, 83-outlet, 84-bottom shoulder, 9-water flow channel, 10-spring, 11-cavity, 12-top water outlet, 13-pressure relief hole, 14-pressure relief seal, 15-inch seal.
  • the over-current protection valve of the present invention includes a valve body 1 in which a valve cavity is formed, and both sides of the valve body 1 are provided with a water inlet end 2 and a water outlet end 3
  • the overcurrent protection valve here is an angle valve, that is, the inlet end 2 and the outlet end 3 are at right angles and are used for connection at the turn. It is also possible to select a valve in which the other outlet end 3 and the inlet end 2 are connected in a straight line.
  • An opening and closing member is disposed at the water inlet end 2 of the valve cavity, where the opening and closing member is a movable ball valve 4, which is controlled by a handle 41, and the movable ball valve 4 is sealingly connected to a hollow guide column 5,
  • the inside of the guide column 5 communicates with the water inlet end 2 through the movable ball valve 4, and the first water outlet 6 and the secondary water outlet 7 are arranged on the flow guiding column 5 along the water flow direction, the first stage water outlet 6 and the secondary water outlets 7 are respectively symmetrically arranged in two in the radial direction.
  • the outer side of the guide column 5 is provided with a sliding sleeve 8 which is composed of three parts, the top is a plug 81, the middle part is a sliding wall 82 connected to the plug 81, and the bottom part is the sliding wall 82 connected bottom lift shoulders 84.
  • the plug 81 of the top seal of the sliding sleeve 8 can seal the outlet end 3 when moving upward.
  • the sliding wall 82 is sleeved on the outside of the guiding column 5, and the sliding wall 82 forms a water flow passage 9 with the inner wall of the valve body 1.
  • the sliding wall 82 is provided with the up and down movement and the a water outlet hole 83 communicating with the secondary water outlet 7; a bottom shoulder 84 of the sliding sleeve 8 is connected to an outer wall of the flow guiding column 5 and an inner wall of the valve body 1, and the bottom shoulder 84 is provided with a supply
  • the elastic member of the pressure here a compression spring 10
  • Below the bottom shoulder 84 is a cavity 11 that communicates with the primary water outlet 6.
  • the water flow passage 9 between the sliding wall 82 and the inner wall of the valve body 1 flows to the water discharge end 3, realizing the normal water discharge of the valve.
  • the pressure of the water outlet end 3 is lowered, the sliding sleeve 8 is moved upward by the pressure of the water inlet end 2, and the plug 81 at the top of the sliding sleeve 8 is placed. Said that the water end 3 is sealed.
  • the pressure of the water received by the sliding sleeve 8 is concentrated on the top inner wall of the sliding sleeve 8 and the bottom shoulder 84, and the force receiving area is large, so that the plug 81 at the top of the sliding sleeve 8 can be tightly blocked.
  • the valve is cut off to achieve overcurrent protection.
  • the opening and closing member can also select other switching valves, such as a gate valve, a butterfly valve and the like.
  • the secondary water outlet 7 and the primary water outlet 6 are respectively symmetrically arranged four or six in the radial direction.
  • the area of the secondary outlet determines the flow of water to ensure the flow of water during normal valve operation.
  • the first-stage water outlet is used to adjust the speed at which the sliding sleeve moves upwards at the beginning, so as to prevent the sliding sleeve from moving up quickly to block the water outlet.
  • the first working state as shown in FIG. 2, the water outlet hole 83 of the sliding sleeve 8 moving upward to the sliding wall 82 communicates with the secondary water outlet 7 of the guiding column 5, the top of the sliding sleeve 8
  • the plug 81 is not in contact with the water outlet end 3;
  • the second working state as shown in FIG. 3, the plug 81 seals the water outlet end 3, and the bottom shoulder 84 of the sliding sleeve 8 is in the second stage The upper part of the water outlet 7.
  • a pressure relief hole 13 is disposed on the valve body 1, and the pressure relief hole 13 communicates with the inside of the flow guiding column 5, and the bottom shoulder 84 of the sliding sleeve 8 and the valve body 1 may be disposed here.
  • a pressure relief seal 14 is disposed at the pressure relief hole 13 .
  • the pressure relief seal 14 is an elastic small ball. The elastic ball can be pressed to connect the interior of the valve body 1 with the pressure relief hole 13 . Thereby communicating with the outside.
  • the elastic pellets herein may also be provided as other seals that seal or conduct the pressure relief holes 13.
  • the bottom shoulder 84 of the sliding sleeve 8 may also be disposed not at the upper portion of the secondary water outlet 7, but the sliding wall
  • the water outlet hole 83 on the 82 and the secondary water outlet 7 on the flow guide column 5 still have a communication portion, so that the pressure relief hole 13 on the valve body 1 can pass through the water outlet hole 83 and the flow guide column on the sliding wall 82.
  • the secondary water outlet 7 on the 5 is in communication with the inside of the flow guiding column 5.
  • a top water outlet 12 may also be provided at the top of the column 5.
  • the fixing sleeve 52 In order to provide the sliding sleeve 8 with a better sliding sealing effect on the guiding column 5, between the guiding column 5 and the sliding sleeve 8, and outside the guiding column 5 There is a fixing sleeve 52, and the fixing sleeve 52 and the shape of the guiding rod 5 are kept at all times, which ensures that the sliding sleeve 8 can smoothly slide along the upper and lower sides thereof.
  • the plug 81 is a boss that gradually increases in cross-sectional area from top to bottom, at the boss
  • the bottom of the crucible is provided with a serpentine seal 15, and the serpentine seal 15 here can also be replaced by a flat gasket or other seal.

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

Abstract

一种过流保护阀，包括阀体（1），阀体（1）内成型有阀腔，阀体（1）的两侧设置有进水端（2）和出水端(3），在阀腔内进水端处设置有启闭件（4），启闭件（4）密封连接一个导流柱（5），所述导流柱（5）的内部通过启闭件与进水端（2）连通，导流柱（5）上沿水流方向设置有一级出水口（6）和二级出水口（7）；导流柱（5）的外部设置有滑动套（8），滑动套（8）的顶部密封设有一个可将出水端（3）密封的塞子（81）；滑动套（8）的中间部分为密封套设在导流柱外部的滑动壁（82），滑动壁（82）与阀体(1）内壁之间形成水流通道（9），滑动壁（82）上设置有上下运动时可与二级出水口（7）连通的出水孔（83）；滑动套（8）的底部台肩（84）与导流柱(5）的外壁和阀体（1）的内壁连接，底部台肩（84）上设置有对其提供压力的弹性部件，底部台肩（84）的下方有与一级出水口（6）连通的腔体（11）。该过流保护阀解决了现有技术的过流保护阀不适用于水路控制的技术问题。

Description

一种过流保护阀 技术领域
[0001] 本发明涉及一种过流保护阀， 具体地说是一种用于水路中当管路破裂时可以自动关 闭的过流保护阀。
背景技术
[0002] 水是人类生活的重要自然资源。 在人类的生活中， 无时无刻都离不开水。 随着现代 社会的发展， 水资源日益匮乏， 节水已成为人们日益关注的话题。 在生活用水中， 主要通过 供水管路来构建供水系统， 在用水终端通过开关阀门来控制。 此时， 用水终端的阀门需要承 载一定的水压， 当阀门损坏后， 其中的水便喷涌而出， 造成水资源的大量浪费。 如果处理不 及时， 不仅造成水资源大量浪费， 还会造成其他财产的损害。
[0003] 在天燃气管路中， 为了避免泄漏产生的危害， 设计出了一些过流保护阀。 如中国专 利文献 2615459Y 中公开了一种压缩天然气管路过流保护阀， 包括接头、 阀体、 阀门弹簧、 阀门动芯， 阀体的下端通过内螺纹拧入空心接头， 阀体的中心为圆柱形腔室， 在圆柱形腔室 内装有带通气孔的阀门动芯， 在阀门动芯的上方设置有圆锥形阀座， 在阀门动芯外套装有阀 门弹簧， 阀门动芯上部设有溢流孔； 在圆柱形腔室的上方开有同轴向的放气圆槽和与之垂直 的空心槽， 在放气圆槽内装有回位放气螺栓， 在空心槽的外表面设置有螺纹。 该技术方案中 所述的过流保护阀， 当其安装管路破裂或损坏时， 能根据气体流量和差压， 自动将出气口关 闭， 从而达到避免高压气体泄漏、 提高使用安全性、 减小事故损失的目的。 但是， 该类型的 阀门如果用于水路系统中， 由于水为液态， 没有高压气体分子扩散速度快， 该阀门打开时， 水在阀门动芯的一端形成较大的压力， 而溢流孔较小， 无法启到泄压的作用， 因此阀门动芯 在水压的作用下， 很容易向上运动， 将出口堵住， 因此， 该阀门不适用于水路控制中。 此 外， 该阀门将出口堵住后， 其压力主要集中在阀门动芯的顶部， 受力面积较小， 在高压天然 气管路中可以提供足够的压力， 而在一般的水路系统中， 由于受力面积较小， 则发挥作用的 压力较小， 不利于将出口紧密的封住， 可靠性下降。
发明内容
[0004] 为此， 本发明所要解决的技术问题在于现有技术中天然气管路中的过流保护阀打开 时容易发生将出口堵死的情况， 并且还存在将出口堵住时的压力不足的情况， 不适用于水路 控制中， 从而提出一种用于水路控制的过流保护阀。
[0005] 为解决上述技术问题， 本发明提供一种过流保护阀， 包括阀体， 所述阀体内成型有阀腔， 所述阀体的两侧设置有进水端和出水端， 在所述阀腔内 进水端处设置有启闭件， 所述启闭件密封连接一个导流柱， 所述导流柱的内部通过所述启 闭件与所述进水端连通， 所述导流柱上沿水流方向设置有一级出水口和二级出水口； 所述导流柱的外部设置有滑动套， 所述滑动套的顶部密封设有一个可将出水端密封的塞子； 所述滑动套的中间部分为密封套设在所述导流柱外部的滑动壁， 所述滑动壁与阀体内壁之间 形成水流通道， 所述滑动壁上设置有上下运动时可与所述二级出水口连通的出水孔； 所述滑 动套的底部台肩与所述导流柱的外壁和阀体的内壁连接， 所述底部台肩上设置有对其提供压 力的弹性部件， 所述底部台肩的下方有与所述一级出水口连通的腔体。
[0006] 所述滑动套沿所述导流柱上下运动时， 具有以下三个状态，
初始状态： 所述滑动套的底部台肩在弹性部件的作用下按压在阀体上， 所述滑动套的底部台 肩与所述导流柱的外壁和阀体的内壁密封连接， 所述滑动壁将所述导流柱上的二级出水口密 封， 所述滑动套顶部的塞子与所述出水端不接触；
第一工作状态： 所述滑动套向上运动到所述滑动壁上的出水孔与所述导流柱的二级出水口连 通， 所述滑动套顶部的塞子与所述出水端不接触；
第二工作状态： 所述塞子将所述出水端密封。
[0007] 在所述导流柱的顶部设置有顶部出水口。
[0008] 所述二级出水口和一级出水口分别沿径向对称设置 2-6个。
[0009] 在第二工作状态下， 所述滑动套的底部台肩在所述二级出水口的上部。
[0010] 在所述阀体上设置有泄压孔， 所述泄压孔与所述导流柱内部连通， 在所述泄压孔处 密封设置有泄压密封件。
[0011] 所述塞子为从上到下截面积逐渐增大的凸台， 在所述凸台的底部设置有〇型密封圈。
[0012] 所述启闭件为活动球阀， 所述活动球阀通过一个把手控制。
[0013] 在所述导流柱和所述滑动套之间， 且在所述导流柱的外部设置有固定套。。
[0014] 所述弹性部件为压缩弹簧， 所述弹簧的一端设置在所述底部台肩的上， 另一段固定 在阀体上。
[0015] 本发明的上述技术方案相比现有技术具有以下优点，
( 1 ) 本发明所述的过流保护阀， 进水端设有启闭件， 所述启闭件密封连接一个导流柱， 所 述导流柱的内部通过所述启闭件与所述进水端连通， 这样从所述进水端进来的水经启闭件后 全部流入导流柱内， 所述导流柱沿水流方向设置有一级出水口和二级出水口， 所述导流柱的 外侧设置有滑动套。 当所述启闭件开启时， 水从进水端流入导流柱内， 经一级出水口流入滑 动套底部台肩下方的腔体内， 当水压到达一定程度时， 水给所述底部台肩向上的压力， 推动 整个滑动套向上运动。 当所述滑动套运动到所述滑动壁上的出水孔与所述导流柱上的二级出 水口连通时， 所述导流柱内的水经所述二级出水口和出水孔流入导流柱外部的阀腔内， 经出 水端流出， 这样， 所述过流保护阀实现了正常出水。 当所述出水端连接的水路管道破裂时， 所述出水端的水压会下降， 因此在水压的作用下所述滑动套继续向出水端方向运动， 所述滑 动套顶部的塞子将出水端堵住密封， 这样就切断了出水端。 本发明所述的过流保护阀， 在进 水时通过导流柱上的一级出水口将所述滑动套慢慢向上推， 不会发生滑动套快速向上移动将 所述出水端堵死无法正常工作的问题， 同时， 当出水端由于所连接的管路破裂导致压力下降 后， 所述滑动套可以在水压的作用下上移将出水端密封， 此时所述滑动套受到的水的压力集 中在底部台肩和顶部， 受力面积较大， 保证了将所述出水端紧密密封， 不会造成水资源的浪 费， 节约了能源， 同时避免了其他财产遭受水侵蚀的危险。
[0016] ( 2 ) 本发明所述的过流保护阀， 包括三种状态， 初始状态为所述启闭件没有打开时 的状态， 打开时导流柱内的水会经一级出水口流入所述滑动套底部台肩下方的腔体内， 由于 其他部分都为密封， 因此形成水压会在底部台肩处推动滑动套上移。 第一工作状态为该过流 保护阀正常工作时的状态， 水可以从进水端流入导流柱， 经二级出水孔流出导流柱进入导流 柱外的阀腔内， 再经所述出水端流出。 第三工作状态为过流保护时的状态， 当出水端连接的 管路破裂或损坏， 水压降低时， 所述滑动套上移将所述出水端密封， 从而实现了过流保护的 功能， 实现了节约水资源的目的。
[0017] ( 3 ) 本发明所述的过流保护阀， 在所述导流柱的顶部设置有顶部出水口， 当启闭件 打开时水流入导流柱内， 可以通过顶部的出水口流出， 对所述滑动套顶部施加压力， 与所述 底部台肩处的水同时对所述滑动套提供向上的压力， 保证所述滑动套顺利向上移动。 并且， 由于顶部出水口和一级出水口设置的出水面积较小， 不会将所述滑动套直接推到出水口处把 出水端堵死。
[0018] ( 4 ) 本发明所述的过流保护阀， 所述二级出水口和一级出水口沿径向对称设置 2-6 个， 一级出水口的面积保证了阀门在刚刚打开时滑动套不会因受到的压力过大而骤然上移将 出水端堵死， 二级出水口的出水面积保证了在阀门正常工作时可以提供足够的供水量。
[0019] ( 5 ) 本发明所述的过流保护阀， 在第二工作状态下， 所述滑动套的底部台肩在所述 二级出水口的上部， 这样当出水端压力下降时， 所述滑动套上移过程中所述二级出水口先被 切断， 导流柱内的水不能再流入与出水端连通的腔内， 减少了出水端的水压， 然后所述滑动 套顶部的塞子再将出水端堵封死， 顺利实现了过流保护功能。 [0020] ( 6 ) 本发明所述的过流保护阀， 在所述阀体上设置有泄压孔， 所述泄压孔与所述导 流柱内部连通， 在所述泄压孔处密封设置有泄压密封件， 当关闭启闭件或者处理完管路破裂 的问题后， 可以打开泄压密封件使所述导流柱内的水压泄掉， 所述滑动套复位。
[0021] ( 7 ) 本发明所述的过流保护阀， 所述塞子为从上到下截面积逐渐增大的凸台， 在所 述凸台的底部设置有〇型密封圈或者平垫片， 这样的结构可以更好的实现对出水端的密封， 通过〇型密封圈或者平垫片进一步保证了塞子的密封性能。
[0022] ( 8 ) 本发明所述的过流保护阀， 在所述导流柱和所述滑动套之间， 且在所述导流柱 的外部设置有固定套， 所述滑动套与所述固定套配合实现更好的滑动效果和密封效果。
[0023] ( 9 ) 本发明所述的过流保护阀， 所述弹性部件为弹簧， 所述弹簧的一端设置在所述 底部台肩的上， 另一段固定在阀体上， 所述弹簧将所述滑动套按压在阀体上， 保证了阀门的 整体结构紧密， 不会发生任意晃动。
附图说明
[0024] 为了使本发明的内容更容易被清楚的理解， 下面根据本发明的具体实施例并结合附 图， 对本发明作进一步详细的说明， 其中
图 1 是本发明所述的过流保护阀初始状态图；
图 2 是本发明所述的过流保护阀的第一工作状态图；
图 3 是本发明所述的过流保护阀的第二工作状态图。
[0025] 图中附图标记表示为： 1-阀体， 2-进水端， 3-出水端， 4-活动球阀， 41-把手， 5-导流 柱， 52-固定套， 6-—级出水口， 7-二级出水口， 8-滑动套， 81-塞子， 82-滑动壁， 83-出水 孔， 84-底部台肩， 9-水流通道， 10-弹簧， 11-腔体， 12-顶部出水口， 13-泄压孔， 14-泄压密 封件， 15-〇型密封圈。
具体实施方式
[0026] 下面给出本发明所述的过流保护阀的一个具体的实施方式。
[0027] 实施例 1 :
本发明所述的过流保护阀， 如图 1所示， 包括阀体 1， 所述阀体 1 内成型有阀腔， 所述阀体 1 的两侧设置有进水端 2和出水端 3， 此处的过流保护阀为角阀， 即进水端 2和出水端 3呈 直角， 用于转弯处连接。 也可以选择其他出水端 3和进水端 2呈直线连接的阀。 在所述阀腔 内进水端 2处设置有启闭件， 此处启闭件为活动球阀 4， 通过把手 41 来控制， 所述活动球 阀 4密封连接一个中空的导流柱 5， 所述导流柱 5的内部通过所述活动球阀 4与所述进水端 2连通， 所述导流柱 5上沿水流方向设置有一级出水口 6和二级出水口 7， 所述一级出水口 6和二级出水口 7分别沿径向对称设置 2个。 所述导流柱 5的外侧设置有滑动套 8， 所述滑 动套 8由三部分构成， 顶部为塞子 81， 中间部分为与所述塞子 81连接的滑动壁 82， 底部为 与所述滑动壁 82连接的底部抬肩 84。 所述滑动套 8顶部密封设置的塞子 81 向上运动时可 以将出水端 3密封。 所述滑动壁 82密封套设在所述导流柱 5的外部， 所述滑动壁 82与阀体 1内壁之间形成水流通道 9， 所述滑动壁 82上设置有上下运动时可与所述二级出水口 7连通 的出水孔 83 ; 所述滑动套 8的底部台肩 84与所述导流柱 5的外壁和阀体 1的内壁连接， 所 述底部台肩 84上设置有对其提供压力的弹性部件， 此处为压缩弹簧 10， 所述弹簧 10 的一 端设置在所述底部台肩 84上， 另一段固定在阀体 1上。 所述底部台肩 84的下方有一个与所 述一级出水口 6连通的腔体 11。
[0028] 所述过流保护阀的工作过程如下：
当通过把手 41将所述活动球阀 4打开时， 水从所述进水端 2进入导流柱 5 内， 经所述导流 柱 5的一级出水口 6流入所述滑动套 8的底部台肩 84下方的腔体 11 内， 在此腔体 11 内形 成水压， 当水压在所述底部台肩 84处的压力大于所述底部台肩 84上部的弹簧 10压力时， 所述滑动套 8在水压的作用下缓慢向上移动。 移动一端距离后， 当所述滑动壁 82上的出水 孔 83与所述导流柱 5上的二级出水口 7连通时， 导流柱 5 内的水经此通道流出导流柱 5， 经过滑动壁 82与阀体 1 内壁之间的水流通道 9流到出水端 3， 实现了阀门的正常出水。 当 所述出水端 3连接的管路破裂或者损坏时， 所述出水端 3的压力下降， 所述滑动套 8在进水 端 2的压力作用下上移， 滑动套 8顶部的塞子 81将所述出水端 3封死。 此时， 所述滑动套 8受到的水的压力集中在滑动套 8 的顶部内壁上和底部台肩 84上， 受力面积较大， 可以将 所述滑动套 8 顶部的塞子 81 紧密的堵死在出水端 3， 切断了阀门， 实现了过流保护的功 能。
[0029] 作为可以变化的实施方式， 所述启闭件也可以选择其他开关阀， 如闸板阀， 蝶阀 等。 所述二级出水口 7和一级出水口 6分别沿径向对称设置 4个或 6个。 二级出水口的面积 决定了出水流量， 保证阀门正常工作时的出水流量。 一级出水口用于调节开始时滑动套向上 运动的速度， 避免滑动套快速向上移动堵死出水口。
[0030] 实施例 2:
所述滑动套 8沿所述导流柱上下运动时， 具有以下三个状态，
初始状态： 如图 1 所示， 所述滑动套 8 的底部台肩 84 在弹性部件的作用下按压在阀体 1 上， 所述滑动套 8的底部台肩 84与所述导流柱 5的外壁和阀体 1 的内壁密封连接， 此处的 密封连接保证了启闭件开启时可以为滑动套 8 的底部台肩 84提供足够的压力， 如果底部台 肩 84与阀体 1 内壁 （或导流柱外壁） 之间存在微小的间隙也不影响其作用， 但开启时滑动 套 8移动的速度会下降； 初始时所述滑动壁 82将所述导流柱 5上的二级出水口 7密封， 所 述滑动套 8顶部的塞子 81与所述出水端 3不接触；
第一工作状态： 如图 2所示， 所述滑动套 8向上运动到所述滑动壁 82上的出水孔 83与所述 导流柱 5的二级出水口 7连通， 所述滑动套 8顶部的塞子 81与所述出水端 3不接触； 第二工作状态： 如图 3所示， 所述塞子 81将所述出水端 3密封， 所述滑动套 8的底部台肩 84在所述二级出水口 7 的上部。 当出水端 3压力下降时， 所述过流保护阀从第一工作状态 变化到第二工作状态， 所述滑动套 8上移过程中所述二级出水口 7先被切断， 导流柱 5内的 水不能再流入与出水端 3连通的水流通道 9， 减少了出水端 3的水压， 然后所述滑动套 8顶 部的塞子 81再将出水端 3堵封死， 顺利实现了过流保护功能。 在所述阀体 1上设置有泄压 孔 13， 所述泄压孔 13与所述导流柱 5内部连通， 此处可以设置为所述滑动套 8底部台肩 84 与所述阀体 1的内壁之间存在间隙， 这样所述泄压孔 13通过所述间隙和底部台肩 84下方的 腔体 11连通， 进而通过一级出水口 6、 二级出水口 7和导流柱 5 内部连通， 在所述泄压孔 13处密封设置有泄压密封件 14， 此处的泄压密封件 14为弹性小球， 按压所述弹性小球可以 将阀体 1 内部与泄压孔 13连通， 从而与外部连通。 此处的弹性小球也可以设置为可将所述 泄压孔 13密封或导通的其他密封件。
[0031] 作为可以变换的实施方式， 在所述第二工作状态下， 所述滑动套 8的底部台肩 84也 可以设置为不在所述二级出水口 7的上部， 而是所述滑动壁 82上的出水孔 83与所述导流柱 5上的二级出水口 7依然存在连通部分， 这样， 阀体 1上的泄压孔 13可以经滑动壁 82上的 出水孔 83和导流柱 5上的二级出水口 7与所述导流柱 5 内部连通。 当所述过流保护阀处于 过流保护的工作状态下， 将活动球阀 4关闭， 处理完管路故障后， 通过按压所述泄压密封件 14， 将所述泄压孔 13与所述导流柱 5内部连通， 阀体 1内的液体经泄压孔 13流出， 所述弹 簧 10复位， 所述过流保护阀回到初始状态。
[0032] 实施例 3 :
为了保证活动球阀 4打开时给所述滑动套 8足够的压力， 让它顺利上移至滑动壁 82的出水 孔 83与导流柱 5的二级出水口 7连通的状态， 在所述导流柱 5的顶部还可以设置有顶部出 水口 12。 为了让所述滑动套 8在所述导流柱 5上具有更好的滑动密封效果， 在所述导流柱 5 和所述滑动套 8之间， 且在所述导流柱 5的外部设置有固定套 52， 所述固定套 52与所述导 流柱 5的形状保持一直， 保证了所述滑动套 8可以沿其顺利上下密封滑动。 为了保证滑动套 8顶部的塞子 81 的密封效果， 所述塞子 81为从上到下截面积逐渐增大的凸台， 在所述凸台 的底部设置有〇型密封圈 15， 此处的〇型密封圈 15也可以采用平垫片或者其他密封件来替 代。
[0033] 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

权 利 要 求 书
1. 一种过流保护阀， 包括阀体 （1)， 所述阀体 （1) 内成型有阀腔， 所述阀体 （1) 的两侧 设置有进水端 （2) 和出水端 （3)， 在所述阀腔内进水端处设置有启闭件， 其特征在于： 所述启闭件密封连接一个导流柱 （5)， 所述导流柱 （5) 的内部通过所述启闭件与所述进水 端 （2) 连通， 所述导流柱 （5) 上沿水流方向设置有一级出水口 （6) 和二级出水口 （7); 所述导流柱 （5) 的外部设置有滑动套 （8)， 所述滑动套 （8) 的顶部密封设有一个可将出水 端 （3) 密封的塞子 （81); 所述滑动套 （8) 的中间部分为密封套设在所述导流柱外部的滑 动壁 （82)， 所述滑动壁 （82) 与阀体 （1) 内壁之间形成水流通道 （9)， 所述滑动壁 （82) 上设置有上下运动时可与所述二级出水口 （7) 连通的出水孔 （83); 所述滑动套 （8) 的底 部台肩 （84) 与所述导流柱 （5) 的外壁和阀体 （1) 的内壁连接， 所述底部台肩 （84) 上设 置有对其提供压力的弹性部件， 所述底部台肩 （84) 的下方有与所述一级出水口 （6) 连通 的腔体 （11)。
2. 根据权利要求 1所述的过流保护阀， 其特征在于：
所述滑动套 （8) 沿所述导流柱 （5) 上下运动时， 具有以下三个状态，
初始状态： 所述滑动套 （8) 的底部台肩 （84) 在弹性部件的作用下按压在阀体 （1) 上， 所 述滑动套 （8) 的底部台肩 （84) 与所述导流柱 （5) 的外壁和阀体 （1) 的内壁密封连接， 所述滑动壁 （82) 将所述导流柱 （5) 上的二级出水口 （7) 密封， 所述滑动套 （8) 顶部的 塞子 （81) 与所述出水端 （3) 不接触；
第一工作状态： 所述滑动套 （8) 向上运动到所述滑动壁 （82) 上的出水孔 （83) 与所述导 流柱 （5) 的二级出水口 （7) 连通， 所述滑动套 （8) 顶部的塞子 （81) 与所述出水端 （3) 不接触；
第二工作状态： 所述塞子 （81) 将所述出水端 （3) 密封。
3. 根据权利要求 1或 2所述的过流保护阀， 其特征在于： 在所述导流柱 （5) 的顶部设置有 顶部出水口 （12)。
4. 根据权利要求 1或 2或 3所述的过流保护阀， 其特征在于： 所述二级出水口 （7) 和一级 出水口 （6) 分别沿径向对称设置 2-6个。
5. 根据权利要求 1-5中任一项所述的过流保护阀， 其特征在于： 在第二工作状态下， 所述滑 动套 （8) 的底部台肩 （84) 在所述二级出水口 （7) 的上部。
6. 根据权利要求 6 所述的过流保护阀， 其特征在于： 在所述阀体 （1) 上设置有泄压孔 (13)， 所述泄压孔 （13) 与所述导流柱 （5) 内部连通， 在所述泄压孔 （13) 处密封设置有 泄压密封件 （14)。 权 利 要 求 书
7. 根据权利要求 1-7中任一项所述的过流保护阀， 其特征在于： 所述塞子 （81) 为从上到下 截面积逐渐增大的凸台， 在所述凸台的底部设置有〇型密封圈 （15)。
8. 根据权利要求 1-8 中任一项所述的过流保护阀， 其特征在于： 所述启闭件为活动球阀 (4)， 所述活动球阀 （4) 通过一个把手 （41) 控制。
9. 根据权利要求 1-9 中任一项所述的过流保护阀， 其特征在于： 在所述导流柱 （5) 和所述 滑动套 （8) 之间， 且在所述导流柱 （5) 的外部设置有固定套 （52)。
10. 根据权利要求 1-10中任一项所述过流保护阀， 其特征在于： 所述弹性部件为压缩的弹簧 (10)， 所述弹簧 （10) 的一端设置在所述底部台肩 （84) 的上， 另一段固定在阀体 （1) 上。
PCT/CN2012/077732 2011-12-29 2012-06-28 一种过流保护阀 WO2013097431A1 (zh)

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