CN116292953B - A cage-type erosion-resistant throttling plug double-acting valve - Google Patents

A cage-type erosion-resistant throttling plug double-acting valve

Info

Publication number
CN116292953B
CN116292953B CN202310338049.7A CN202310338049A CN116292953B CN 116292953 B CN116292953 B CN 116292953B CN 202310338049 A CN202310338049 A CN 202310338049A CN 116292953 B CN116292953 B CN 116292953B
Authority
CN
China
Prior art keywords
valve
cage
plug
valve body
throttling
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN202310338049.7A
Other languages
Chinese (zh)
Other versions
CN116292953A (en
Inventor
谭爱芳
杨玮
徐国涛
王健
游艇
董小庆
史世攀
林雅琦
田野
石芸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Oilfield Equipment Corp
Sinopec Siji Petroleum Machinery Co Ltd
Original Assignee
Sinopec Oilfield Equipment Corp
Sinopec Siji Petroleum Machinery Co Ltd
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 Sinopec Oilfield Equipment Corp, Sinopec Siji Petroleum Machinery Co Ltd filed Critical Sinopec Oilfield Equipment Corp
Priority to CN202310338049.7A priority Critical patent/CN116292953B/en
Publication of CN116292953A publication Critical patent/CN116292953A/en
Application granted granted Critical
Publication of CN116292953B publication Critical patent/CN116292953B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F16K5/0407—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 with particular plug arrangements, e.g. particular shape or built-in means
    • 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
    • F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • 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
    • F16K5/0442—Spindles and actuating means
    • 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
    • F16K5/10—Means for additional adjustment of the rate of flow
    • 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
    • F16K5/12—Arrangements for modifying the way in which the rate of flow varies during the actuation of the 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings

Landscapes

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

Abstract

本发明提供了一种笼式耐冲蚀节流旋塞双作用阀，包括阀体和垂直设置于阀体顶部的阀座，阀座顶部开设有连续台阶，连续台阶内底部同轴转动有笼套式旋塞，笼套式旋塞内同轴螺纹连接有节流杆，笼套式旋塞上开设有旋塞节流孔，连续台阶设置有与旋塞节流孔连通的阀腔，连续台阶设置对阀腔顶部进行密封的密封盘，阀体内部设置有与阀腔连通的阀体过流孔，阀体内设置有贯穿的阀体上游流体通道和阀体下游流体通道，阀座设置有与阀座上游流体通道连通的阀座流体通道，笼套式旋塞开设可连通笼套式旋塞内部和阀座流体通道的旋塞上游流体通道，阀体过流孔与阀体下游流体通道连通。本发明产生了简化工作流程、延长装置使用寿命、降低噪音和提高作业安全性的效果。

The present invention provides a caged, erosion-resistant, throttling double-acting valve with a throttle cock. The valve comprises a valve body and a valve seat vertically disposed at the top of the valve body. The valve seat has a continuous step formed at the top, a caged cock coaxially rotating at the bottom of the continuous step, a throttling rod coaxially threadedly connected to the caged cock, a cock throttling hole formed in the caged cock, a valve cavity connected to the cock throttling hole formed in the continuous step, a sealing disk provided on the continuous step for sealing the top of the valve cavity, a valve body flow hole connected to the valve cavity, an upstream fluid passage and a downstream fluid passage extending through the valve body, a seat fluid passage connected to the upstream fluid passage, the caged cock having an upstream fluid passage connecting the caged cock interior and the seat fluid passage, and the valve body flow hole connected to the downstream fluid passage. The present invention simplifies the workflow, extends the service life of the device, reduces noise, and improves operational safety.

Description

Cage type erosion-resistant throttle cock double-acting valve
Technical Field
The invention relates to the technical field of plug valves, in particular to a cage type erosion-resistant throttling plug double-acting valve.
Background
At present, in the operation processes of fracturing pumping, well killing pumping and the like of domestic oil and gas fields, the flow of high-pressure fluid needs to be controlled by throttling through a partially opened plug valve, or the soft start of the pump is realized by rapidly throttling to be completely closed through a needle type throttle valve so as to prevent the impact damage to the pump and the pipeline caused by the water hammer effect. The throttle effect causes the serious erosion quick failure life-span of cock to be short, and throttle process noise is big, throttle is unstable, and after the throttle valve is through quick throttle, case disk seat surface damage is serious, can't seal and complete closure, needs frequent change throttle valve case disk seat, and pump soft start effect is poor, inefficiency.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a cage type erosion-resistant throttle cock double-acting valve, which solves the problem that the valve core valve seat has short service life due to the fact that the valve core valve seat loses the sealing and completely closes after the throttle valve is throttled rapidly in the prior art.
According to the embodiment of the invention, the double-acting valve of the cage type erosion-resistant throttle cock comprises a valve body and a valve seat vertically arranged at the top of the valve body, wherein the top of the valve seat is provided with a continuous step, the bottom of the continuous step is coaxially sleeved with a cage type cock in a rotating manner, the inner top of the cage type cock is coaxially connected with a throttle rod in a threaded manner, the inner wall of the cage type cock is provided with a cock throttle hole, the middle part of the continuous step is provided with a valve cavity communicated with the cock throttle hole, the top of the continuous step is provided with a sealing disc for sealing the top of the valve cavity, the inside of the valve body is provided with a valve body overflow hole communicated with the valve cavity, the inside of the valve body is horizontally provided with a valve body upstream fluid channel and a valve body downstream fluid channel which penetrate through, the bottom of the valve seat is provided with a valve seat fluid channel communicated with the valve seat upstream fluid channel, the bottom of the cage type cock is provided with a cock upstream fluid channel which can be communicated with the inside of the cage type cock, and the valve body overflow hole is communicated with the valve body downstream fluid channel.
Preferably, the middle part of the throttle lever is provided with an annular groove, and a throttle lever sealing ring is arranged through the annular groove.
Preferably, a controller is fixedly arranged above the throttle lever, and when the top end of the throttle lever is contacted with the bottom surface of the controller, the throttle lever and the cage type cock are in a threaded fit state.
Preferably, the outer wall of the cage-type cock is coaxially and fixedly provided with an annular bulge, the cage-type cock is sleeved with a valve cover, the bottom of the valve cover is connected with the top surface of the sealing disc, the top and the bottom of the annular bulge are respectively connected with an upper cock buffer pad and a lower cock buffer pad, the annular bulge is positioned in an annular cavity at the bottom of the valve cover, the lower cock buffer pad is in contact with the bottom surface of the sealing disc, the upper cock buffer pad is in contact with the top surface of the annular cavity, and the valve cover is fixed on the valve body through a gland.
Preferably, the inner wall and the outer wall of the sealing disc are respectively fixedly provided with an inner sealing ring of the sealing disc and an outer sealing ring of the sealing disc.
Preferably, the cock orifice is arranged from top to bottom.
Preferably, the top end of the cage cock is fixedly sleeved with a sheath, and the top end of the cage cock is coaxially and fixedly connected with a rotating head through the sheath.
Preferably, the top end of the throttle rod is coaxially and fixedly connected with a control nut.
Preferably, one end of the valve seat downstream fluid channel is connected with the outer wall of the valve seat, the top and the bottom of the outer wall of the valve seat are respectively provided with an upper valve seat sealing strip and a lower valve seat sealing strip, and the upper valve seat sealing strip and the lower valve seat sealing strip are respectively positioned above and below the connecting end of the valve seat and the valve seat downstream fluid channel.
Preferably, the external connection end of the upstream fluid channel of the valve body is provided with an end connection sealing assembly, the inner ring of the end connection sealing assembly is provided with a sealing ring, and the external connection end of the downstream fluid channel of the valve body is fixedly provided with an end connection sleeve.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention has an upstream fluid channel, a high-strength cage type cock with a throttle hole, a valve seat and a throttle rod, wherein the throttle rod is used for adjusting the size of the throttle hole of the cage type cock in a lifting way to realize the adjustment of flow, the cage type cock is rotated within a range of 90 degrees to be matched with the valve seat for use, the opening and the closing of the valve are controlled through the rotation of the upstream fluid channel of the cage type cock, and meanwhile, the opening and the closing of the valve and the high-integration control of the throttle of the fluid flow are realized.
2. The valve is in a full-open state to realize throttling, and high-speed fluid can not erode the rotary plug hole during throttling.
3. The relative needle type throttle valve cage type throttle is slow and stable, can not cause serious damage to the valve core sealing surface, and has long service life. Meanwhile, the upper cushion pad and the lower cushion pad of the spinning disk are arranged, effectively reducing throttle noise.
4. By adopting a remote control mode, the safety risk of the high-voltage switch valve can be reduced, and the switch state and the throttle quantity of the valve can be monitored in real time.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the A-A plane of FIG. 1.
Fig. 3 is a cross-sectional view of the B-B plane in fig. 2.
In the drawings, a valve body, a2, a valve seat, a3, a cage type cock, a 4, a sealing disc, a5, a valve cover, a 6, a throttle lever, a 7, a gland, a 8, a rotating head, a 9, a control nut, a 10, a throttle lever sealing ring, a 11, a cock upper buffer pad, a 12, a cock lower buffer pad, a 13, a sealing disc inner sealing ring, a 14, a sealing disc outer sealing ring, a 15, a valve seat upper sealing strip, a 16, a valve seat lower sealing strip, a 17, an end connecting block, a 18, an end connecting sealing assembly, a 19, a sheath, a 20 and a controller are arranged;
1-1 of a valve body upstream fluid channel, 1-2 of a valve cavity, 1-3 of a valve body overflow hole, 1-4 of a valve body downstream fluid channel, 1-5 of a valve body flow direction mark, 2-1 of a valve seat fluid channel, 3-1 of a cock upstream fluid channel, 3-2 of a cock middle cavity and 3-3 of a cock orifice.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1-3, to achieve the adjustable throttling of the valve to complete the high-speed fluid in the fully opened state of the cock, the cock orifice is protected from erosion by the high-speed fluid, and meanwhile, after the slow throttling, the valve is fully sealed and closed to ensure the soft start of the pump, and the slow and stable throttling can avoid the generation of turbulence. The invention provides a cage type erosion-resistant throttling cock double-acting valve, which comprises a valve body 1 and a valve seat 2 vertically arranged at the top of the valve body 1, wherein a continuous step is arranged at the top of the valve seat 2, a cage type cock 3 is coaxially sleeved at the bottom in the continuous step, a throttle rod 6 is coaxially connected at the top in the cage type cock 3 in a threaded manner, a cock throttle hole 3-3 is arranged on the inner wall of the cage type cock 3, a valve cavity 1-2 communicated with the cock throttle hole 3-3 is arranged in the middle part of the continuous step, a sealing disc 4 for sealing the top of the valve cavity 1-2 is arranged at the top of the continuous step, a valve body overflow hole 1-3 communicated with the valve cavity 1-2 is arranged in the valve body 1, a valve body upstream fluid channel 1-1 and a valve body downstream fluid channel 1-4 which penetrate through are horizontally arranged in the valve body 1, a valve seat fluid channel 2-1 communicated with the valve seat upstream fluid channel 1-1 is arranged at the bottom of the valve seat, an upstream fluid channel 3-1 capable of communicating with the cock 3 in the cage type cock 3 and the valve seat fluid channel 2-1 is arranged at the bottom of the cage type cock 3.
The full-open throttle working process of the valve is as follows, the rotating head 8 is rotated to drive the cage-type cock 3 to rotate anticlockwise by 90 degrees, so that the central lines of the upstream fluid channel 1-1 of the valve body, the valve seat fluid channel 2-1 and the upstream fluid channel 3-1 of the cock are aligned, the valve is fully opened at the moment, fluid sequentially flows through the valve body 1, the valve seat 2 and the cage-type cock 3 and then enters the cock middle cavity 3-2, the fluid enters the valve cavity 1-2 after being throttled by the cock throttle hole 3-3, and then flows out after passing through the valve body through the throttle hole 1-3 and then enters the downstream fluid channel 1-4 of the valve body.
The valve slowly increases the throttling quantity to be completely closed to realize the soft starting process of the pump, namely, the control nut 9 is rotated to drive the throttling rod 6 to lift, the contact ratio of the throttling rod 6 and the plurality of cock throttle holes 3-3 is adjusted, the larger the contact ratio is, the larger the throttling quantity is, when the throttling rod 6 descends to the lowest position, the cock throttle hole 3-3 is completely shielded, the valve reaches the maximum throttling capacity, the rotating rotary head 8 is rotated clockwise by 90 degrees, and the valve is completely closed.
As shown in fig. 2, in order to improve the tightness between the throttle lever 6 and the caged tap 3. An annular groove is formed in the middle of the throttle lever 6, and a throttle lever sealing ring 10 is installed through the annular groove.
As shown in fig. 1 and 2, in order to realize the position adjustment of the throttle lever 6, the throttle lever 6 is prevented from being adjusted to rotate too much so as to lose the threaded connection between the throttle lever 6 and the caged cock 3, and leakage of fluid is caused when high-speed fluid is conveyed. The controller 20 is fixedly arranged above the throttle lever 6, and when the top end of the throttle lever 6 is contacted with the bottom surface of the controller 20, the throttle lever 6 and the cage cock 3 are in a threaded fit state.
As shown in fig. 2, in order to achieve damping of the axial impact of the high-speed fluid on the caged tap 3. The outer wall of the cage type cock 3 is coaxially and fixedly provided with an annular bulge, the cage type cock 3 is sleeved with a valve cover 5, the bottom of the valve cover 5 is connected with the top surface of the sealing disc 4, the top and the bottom of the annular bulge are respectively connected with a cock upper buffer pad 11 and a cock lower buffer pad 12, the annular bulge is positioned in an annular cavity at the bottom of the valve cover 5, the cock lower buffer pad 12 is in contact with the bottom surface of the sealing disc 4, the cock upper buffer pad 11 is in contact with the top surface of the annular cavity, and the valve cover 5 is fixed on the valve body 1 through a gland 7. The valve cover 5 is covered on the cage type cock 3, and the annular bulge is buffered by matching the cock upper buffer pad 11 and the cock lower buffer pad 11, so that the stability of the cage type cock 3 is improved.
As shown in fig. 2, in order to improve the sealing of the sealing disk 4 to the valve chamber 1-2. The inner wall and the outer wall of the sealing disc 4 are respectively fixedly provided with a sealing disc inner sealing ring 13 and a sealing disc outer sealing ring 14.
As shown in fig. 2, in order to improve the width and accuracy of the throttle control. The tap orifice 3-3 is arranged from top to bottom. The number of the cock throttle holes 3-3 is larger, the cock throttle holes 3-3 are vertically arranged, and the throttle rod 6 gradually covers the cock throttle holes 3-3 in the process of rotating the throttle rod 6, so that the purpose of throttle adjustment is achieved.
As shown in fig. 1 and 2, the caged tap 3 is conveniently turned. The top end of the cage cock 3 is fixedly sleeved with a sheath 19, and is fixedly connected with a rotating head 8 coaxially through the sheath 19.
As shown in fig. 1 and 2, the throttle lever 6 is turned for convenience. The top end of the throttle lever 6 is coaxially and fixedly connected with a control nut 9.
As shown in fig. 2, to enhance the tightness between the valve seat 2 and the valve body 1, communication between the valve chamber 1-2 and the valve seat downstream fluid passage 1-4 is prevented. One end of the valve seat downstream fluid channel 1-4 is connected with the outer wall of the valve seat 2, the top and the bottom of the outer wall of the valve seat 2 are respectively provided with a valve seat upper sealing strip 15 and a valve seat lower sealing strip 16, and the valve seat upper sealing strip 15 and the valve seat lower sealing strip 16 are respectively positioned above and below the connecting end of the valve seat 2 and the valve seat downstream fluid channel 1-4. As shown in fig. 3, the valve body flow-through hole 1-3 is used to control the flow rate of the fluid, so that it is necessary to ensure a relative seal between the valve chamber 1-2 and the fluid passage 1-4 downstream of the valve seat.
As shown in fig. 1-3, to enhance the tightness between the upstream fluid passage 1-1 of the valve body and the external conduit. The external connection end of the upstream fluid channel 1-1 of the valve body is provided with an end connection sealing assembly 18, the inner ring of the end connection sealing assembly 18 is provided with a sealing ring, and the external connection end of the downstream fluid channel 1-4 of the valve body is fixedly provided with an end connection sleeve 17. Because of the form of throttling and the existence of a large pressure between the upstream fluid passage 1-1 of the valve body and the external conduit after the valve is fully closed, the end connection seal assembly 18 is arranged to enhance the tightness of the joint.

Claims (10)

1.一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：包括阀体（1）和垂直设置于阀体（1）顶部的阀座（2），阀座（2）顶部开设有连续台阶，连续台阶内底部同轴转动套装有笼套式旋塞（3），笼套式旋塞（3）内顶部同轴螺纹连接有节流杆（6），笼套式旋塞（3）内壁上开设有旋塞节流孔（3-3），连续台阶的中部设置有与旋塞节流孔（3-3）连通的阀腔（1-2），连续台阶顶部设置对阀腔（1-2）顶部进行密封的密封盘（4），阀体（1）内部设置有与阀腔（1-2）连通的阀体过流孔（1-3），阀体（1）内水平设置有贯穿的阀体上游流体通道（1-1）和阀体下游流体通道（1-4），阀座（2）底部设置有与阀体上游流体通道（1-1）连通的阀座流体通道（2-1），笼套式旋塞（3）底部开设可连通笼套式旋塞（3）内部和阀座流体通道（2-1）的旋塞上游流体通道（3-1），阀体过流孔（1-3）与阀体下游流体通道（1-4）连通。1. A cage-type erosion-resistant throttling plug double-acting valve, characterized in that it comprises a valve body (1) and a valve seat (2) vertically arranged on the top of the valve body (1), a continuous step is provided on the top of the valve seat (2), a cage-type plug (3) is coaxially rotatably mounted on the bottom of the continuous step, a throttling rod (6) is coaxially threadedly connected to the top of the cage-type plug (3), a plug throttling hole (3-3) is provided on the inner wall of the cage-type plug (3), a valve cavity (1-2) communicating with the plug throttling hole (3-3) is provided in the middle of the continuous step, and a sealing member for sealing the top of the valve cavity (1-2) is provided on the top of the continuous step. The valve body (1) is provided with a valve body flow hole (1-3) communicating with the valve cavity (1-2) inside the valve body (1), a valve body upstream fluid channel (1-1) and a valve body downstream fluid channel (1-4) are horizontally provided in the valve body (1), a valve seat fluid channel (2-1) communicating with the valve body upstream fluid channel (1-1) is provided at the bottom of the valve seat (2), a plug upstream fluid channel (3-1) communicating with the inside of the cage-type plug (3) and the valve seat fluid channel (2-1) is provided at the bottom of the cage-type plug (3), and the valve body flow hole (1-3) is communicated with the valve body downstream fluid channel (1-4). 2.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述节流杆（6）的中部开设环形槽，并通过环形槽安装有节流杆密封圈（10）。2. A cage-type erosion-resistant throttling plug double-acting valve as claimed in claim 1, characterized in that an annular groove is provided in the middle of the throttling rod (6), and a throttling rod sealing ring (10) is installed through the annular groove. 3.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述节流杆（6）的上方固定设置有控制器（20），且在所述节流杆（6）的顶端与控制器（20）底面接触时，所述节流杆（6）与笼套式旋塞（3）处于螺纹配合状态。3. A cage-type erosion-resistant throttling plug double-acting valve as described in claim 1, characterized in that a controller (20) is fixedly arranged above the throttling rod (6), and when the top end of the throttling rod (6) contacts the bottom surface of the controller (20), the throttling rod (6) and the cage-type plug (3) are in a threaded fit state. 4.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述笼套式旋塞（3）的外壁上同轴固定设置有环状凸起，所述笼套式旋塞（3）上套装有阀盖（5），阀盖（5）底部连接所述密封盘（4）的顶面，环状凸起的顶部和底部分别连接有旋塞上缓冲垫（11）和旋塞下缓冲垫（12），环状凸起位于阀盖（5）底部的环状腔内，且旋塞下缓冲垫（12）与所述密封盘（4）的底面接触，旋塞上缓冲垫（11）与环状腔的顶面接触，阀盖（5）通过压盖（7）固定于所述阀体（1）上。4. A cage-type erosion-resistant throttling plug double-acting valve as described in claim 1, characterized in that: an annular protrusion is coaxially fixedly provided on the outer wall of the cage-type plug (3), a valve cover (5) is mounted on the cage-type plug (3), the bottom of the valve cover (5) is connected to the top surface of the sealing disk (4), the top and bottom of the annular protrusion are respectively connected to the plug upper buffer pad (11) and the plug lower buffer pad (12), the annular protrusion is located in the annular cavity at the bottom of the valve cover (5), and the plug lower buffer pad (12) contacts the bottom surface of the sealing disk (4), the plug upper buffer pad (11) contacts the top surface of the annular cavity, and the valve cover (5) is fixed to the valve body (1) through a pressure cover (7). 5.如权利要求4所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述密封盘（4）的内壁和外壁分别固定设置有密封盘内密封圈（13）和密封盘外密封圈（14）。5. A cage-type erosion-resistant throttling plug double-acting valve as claimed in claim 4, characterized in that an inner sealing ring (13) and an outer sealing ring (14) are fixedly provided on the inner wall and outer wall of the sealing disk (4), respectively. 6.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述旋塞节流孔（3-3）由上至下布置。6. A cage-type erosion-resistant throttling plug double-acting valve as claimed in claim 1, characterized in that the plug throttling holes (3-3) are arranged from top to bottom. 7.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述笼套式旋塞（3）的顶端固定套装有护套（19），并通过护套（19）同轴固定连接有旋转头（8）。7. A cage-type erosion-resistant throttling plug double-acting valve as claimed in claim 1, characterized in that the top end of the cage-type plug (3) is fixedly sleeved with a sheath (19), and is coaxially fixedly connected to a rotating head (8) through the sheath (19). 8.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述节流杆（6）的顶端同轴固定连接有控制螺母（9）。8. A cage-type erosion-resistant throttling plug double-acting valve as claimed in claim 1, characterized in that a control nut (9) is coaxially fixedly connected to the top end of the throttling rod (6). 9.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述阀体下游流体通道（1-4）的一端连接所述阀座（2）的外壁，所述阀座（2）外壁的顶部和底部分别设置有阀座上密封条（15）和阀座下密封条（16），阀座上密封条（15）和阀座下密封条（16）分别位于所述阀座（2）与所述阀体下游流体通道（1-4）的连接端的上方和下方。9. A cage-type erosion-resistant throttling plug double-acting valve as described in claim 1, characterized in that: one end of the downstream fluid channel (1-4) of the valve body is connected to the outer wall of the valve seat (2), and the top and bottom of the outer wall of the valve seat (2) are respectively provided with a valve seat upper sealing strip (15) and a valve seat lower sealing strip (16), and the valve seat upper sealing strip (15) and the valve seat lower sealing strip (16) are respectively located above and below the connection end between the valve seat (2) and the downstream fluid channel (1-4) of the valve body. 10.如权利要求1所述一种笼式耐冲蚀节流旋塞双作用阀，其特征在于：所述阀体上游流体通道（1-1）的外接端设置有端部连接密封总成（18），端部连接密封总成（18）的内圈设置有密封圈，所述阀体下游流体通道（1-4）的外接端固定设置有端部连接套（17）。10. A cage-type erosion-resistant throttling plug double-acting valve as described in claim 1, characterized in that: the external end of the upstream fluid channel (1-1) of the valve body is provided with an end connection sealing assembly (18), the inner ring of the end connection sealing assembly (18) is provided with a sealing ring, and the external end of the downstream fluid channel (1-4) of the valve body is fixedly provided with an end connection sleeve (17).
CN202310338049.7A 2023-03-31 2023-03-31 A cage-type erosion-resistant throttling plug double-acting valve Active CN116292953B (en)

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