CN108825795B - Triangular double seal cage valve - Google Patents
Triangular double seal cage valve Download PDFInfo
- Publication number
- CN108825795B CN108825795B CN201811052140.8A CN201811052140A CN108825795B CN 108825795 B CN108825795 B CN 108825795B CN 201811052140 A CN201811052140 A CN 201811052140A CN 108825795 B CN108825795 B CN 108825795B
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- Prior art keywords
- valve
- cage
- sealing ring
- valve body
- triangular
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
提供一种三角型双密封笼式阀，包括阀体，阀体水平两端和顶部分别设有阀口，阀体内部设有中孔，阀体顶部阀口通过阀盖密封盖合，阀体顶部阀口处到中孔之间设有阀笼，阀笼内腔中上下滑动安装有阀芯，阀笼包括从阀体顶部阀口处往中孔处依次连接的上笼、中笼和下笼，下笼设于阀体的中孔上，中笼和下笼的接触处设有当阀芯落下时与阀芯下密封面紧压形成软密封的下三角型密封圈，上笼和中笼的接触处设有当阀芯落下时与阀芯上密封面紧压形成软密封的上三角型密封圈。本发明采用与阀芯形成双型软密封的三角型密封圈，解决了现有密封圈与阀芯在运动过程中一直相互运动摩擦而引起的密封圈易滑落、阀门泄漏偏大等问题，密封件不易损坏，提高安全系数。
A triangular double-seal cage valve is provided, which includes a valve body. Valve ports are respectively provided at both horizontal ends and the top of the valve body. A middle hole is provided inside the valve body. The valve port at the top of the valve body is sealed and closed by a valve cover. The valve body There is a valve cage between the top valve port and the middle hole. A valve core is installed sliding up and down in the inner cavity of the valve cage. The valve cage includes an upper cage, a middle cage and a lower cage that are connected in sequence from the valve port at the top of the valve body to the middle hole. The lower cage is located on the middle hole of the valve body. The contact point between the middle cage and the lower cage is equipped with a lower triangular sealing ring that presses against the lower sealing surface of the valve core to form a soft seal when the valve core falls. The upper cage and the middle cage The contact point of the cage is equipped with an upper triangular sealing ring that presses against the upper sealing surface of the valve core to form a soft seal when the valve core falls. The invention adopts a triangular sealing ring that forms a double soft seal with the valve core, which solves the problems of the existing sealing ring and the valve core that are caused by friction with each other during the movement, such as the sealing ring is easy to slip and the valve leakage is too large. The parts are not easily damaged and the safety factor is improved.
Description
Technical Field
The invention belongs to the technical field of cage valves, and particularly relates to a triangular double-seal cage valve.
Background
At present, a traditional cage-type structure valve body is often used in the petrochemical industry field, and the sealing mode of a cage-type regulating valve is mainly an O-shaped rubber sealing ring or a hard sealing mode between metals. When the O-shaped rubber sealing ring is used for sealing, the O-shaped rubber sealing ring is easily pulled out of the mounting groove along with the up-and-down motion of the valve core, so that the sealing of the O-shaped rubber sealing ring is invalid. However, when the valve cage and the valve core adopt a hard sealing mode between metals, the sealing effect of the O-shaped rubber sealing ring is difficult to achieve, the leakage of the valve is large, and fluid flows out when the valve is closed. In order to improve the sealing performance and the service life of the sealing element of the cage type regulating valve and prevent equipment failure and possible safety accidents caused by the damage of the sealing element, the improvement of the cage type regulating valve is needed.
Disclosure of Invention
The invention solves the technical problems that: the invention provides a triangular double-sealing cage valve, wherein a triangular sealing ring which forms soft sealing with a valve core is arranged between three cages, and the sealing surface of the valve core is in extrusion contact with the triangular sealing ring to form a double-type soft sealing structure when the valve core falls down, so that the problems that the sealing ring is easy to slide, the valve is large in leakage and the like caused by the fact that the sealing ring and the valve core always move and rub in the moving process are solved, the sealing member is not easy to damage, the service life is prolonged, and the safety coefficient is improved.
The invention adopts the technical scheme that: the valve body is provided with valve ports at two horizontal ends and at the top, a central hole with a vertical axis is arranged in the valve body, the valve port at the top of the valve body is sealed by a valve cover sealing cover, a valve rod is slidably installed in the valve cover, a valve cage is arranged between the valve port at the top of the valve body and the central hole, a valve core is slidably installed in an inner cavity of the valve cage up and down, the lower end of the valve rod stretches into the valve cage to be fixedly connected with the valve core, the valve cage comprises an upper cage, a middle cage and a lower cage which are sequentially connected from the valve port at the top of the valve body to the central hole, the lower cage is arranged on the central hole of the valve body, the middle cage is installed on the upper part of the lower cage, a lower triangular sealing ring which is tightly pressed with a lower sealing surface of the valve core to form soft seal is arranged on the inner side of the contact part of the upper cage and the middle cage, and the upper triangular sealing ring which is tightly pressed on the upper sealing surface of the valve core when the valve core falls is arranged on the inner side of the contact part of the upper cage.
The contact part of the middle cage and the lower cage is provided with a lower trapezoid groove which is clamped by the two cages to form a lower triangular sealing ring for installing, two corners of the lower triangular sealing ring are embedded into the lower trapezoid groove to be fixed, and the other corner of the lower triangular sealing ring extends out of the lower trapezoid groove to tightly press the lower sealing surface of the valve core to form soft sealing; the contact part of the upper cage and the middle cage is provided with an upper trapezoid groove which is formed by clamping two cages and used for installing an upper triangular sealing ring, two corners of the upper triangular sealing ring are embedded into the upper trapezoid groove to be fixed, and the other corner of the upper triangular sealing ring extends out of the upper trapezoid groove to tightly press an upper sealing surface of the valve core to form soft sealing.
Further, the lower cage is connected with the valve body in a split type, the lower cage is arranged on a middle hole of the valve body, and the lower cage is sealed with a step surface of the middle hole through a gasket; or the lower cage is an integral structure which is formed by directly extending at the middle hole of the valve body.
Further, a flow window is arranged on the middle cage.
Further, the valve core is provided with a pressure balance hole.
Further, the upper end of the valve cover is provided with a support, an actuator is supported on the upper portion of the support, a hand wheel is connected to the input end of the upper portion of the actuator, and the output end of the lower portion of the actuator is fixedly connected with the upper end of the valve rod.
Compared with the prior art, the invention has the advantages that:
1. according to the scheme, the valve cage is designed into a three-section split structure consisting of an upper cage, a middle cage and a lower cage, a triangular sealing ring which forms soft sealing with the valve core is arranged between the three cages, and the sealing surface of the valve core is in extrusion contact with the triangular sealing ring to form a soft sealing structure when the valve core falls down, so that the problems that the sealing ring is easy to slide, the valve is large in leakage and the like caused by the fact that the sealing ring and the valve core always move and rub in the moving process are solved, the sealing member is not easy to damage, the service life of the sealing member is prolonged, the sealing performance is good, and the safety coefficient is high;
2. in the scheme, the three-section split type structure design of the valve cage is convenient for installing the triangular sealing ring, the triangular sealing ring is fixed in a trapezoid groove structure, and two corners of the triangular sealing ring are embedded into the trapezoid groove formed by clamping the two valve cages, so that the valve cage is safe and reliable to fix and cannot slide down from the installation groove;
3. according to the scheme, different flow windows can be formed on the middle cage according to the flow characteristics required by customers, so that people can observe the flow in the valve conveniently;
4. the cage and the valve body adopt split type structure under this scheme, and the maintenance of cage is changed down of being convenient for, also can adopt the integral structure of cage under directly processing on the valve body, just so avoided using split type leakage problem that exists, the user can have a plurality of selections according to own needs.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of the portion I in FIG. 1.
Detailed Description
Embodiments of the present invention are described below with reference to fig. 1-2.
The triangular double-seal cage valve is shown in fig. 1 and comprises a valve body 1, valve ports are respectively arranged at two horizontal ends and the top of the valve body 1, a central hole 15 with a vertical axis is arranged in the valve body 1, the valve port at the top of the valve body 1 is sealed by a valve cover 2, a valve rod 7 is slidably arranged in the valve cover 2, a support 12 is arranged at the upper end of the valve cover 2, an actuator 13 is supported at the upper part of the support 12, a hand wheel 14 is connected to the upper input end of the upper part of the actuator 13, the lower output end of the actuator 13 is fixedly connected with the upper end of the valve rod 7, a valve cage 3 is arranged between the valve port at the top of the valve body 1 and the central hole 15, a valve core 8 is slidably arranged in the inner cavity of the valve cage 3 up and down, the lower end of the valve rod 7 extends into the valve cage 3 and is fixedly connected with the valve core 8, and a pressure balancing hole 16 is arranged on the valve core 8.
Specifically, as shown in fig. 2, the valve cage 3 comprises an upper cage 4, a middle cage 5 and a lower cage 6 which are sequentially connected from a valve port at the top of the valve body 1 to a middle hole 15, the lower cage 6 is arranged on the middle hole 15 of the valve body 1, the middle cage 5 is arranged at the upper part of the lower cage 6, a lower triangular sealing ring 10 which is tightly pressed with a lower sealing surface of the valve core 8 to form soft sealing when the valve core 8 falls down is arranged at the inner side of the contact position of the middle cage 5 and the lower cage 6, a lower trapezoid groove 18 which is clamped by two cages to form the lower triangular sealing ring 10 is arranged at the contact position of the middle cage 5 and the lower cage 6, two corners of the lower triangular sealing ring 10 are embedded into the lower trapezoid groove 18 to be fixed, and the other corner of the lower triangular sealing ring 10 extends out of the lower trapezoid groove 18 to tightly press with the lower sealing surface of the valve core 8 to form soft sealing; the upper cage 4 is arranged on the upper portion of the middle cage 5, an upper triangular sealing ring 11 which is tightly pressed with an upper sealing surface of the valve core 8 to form soft sealing when the valve core 8 falls is arranged on the inner side of the contact position of the upper cage 4 and the middle cage 5, an upper trapezoid groove 19 which is clamped by two cages to form the upper triangular sealing ring 11 is used for installing the upper triangular sealing ring 11, two corners of the upper triangular sealing ring 11 are embedded into the upper trapezoid groove 19 to be fixed, the other corner of the upper triangular sealing ring 11 extends out of the upper trapezoid groove 19 to tightly press with the upper sealing surface of the valve core 8 to form soft sealing, and the upper end face of the upper cage 4 is tightly pressed on the valve cover 2.
The installation in the invention is carried out according to a certain sequence: the lower cage 6 is firstly arranged in a middle hole 15 of the valve body 1, the middle cage 5 and the valve core 8 are combined and then are arranged on the lower cage 6, a lower triangular sealing ring 10 is arranged in a lower trapezoid groove 18 between the middle cage 5 and the lower cage 6, the upper cage 4 is arranged on the middle cage 5, a triangular sealing ring 11 is arranged in an upper trapezoid groove 19 formed by splicing the upper cage 4 and the middle cage 5, finally, the upper end of the upper cage 4 is pressed by arranging a gasket and a valve cover 2, and then, the valve rod 7, an actuator 13, a hand wheel 14 and other parts at the upper part are arranged according to the existing sequence. According to the invention, the valve cage 3 is designed into a three-section split structure consisting of the upper cage 4, the middle cage 5 and the lower cage 6, a triangular sealing ring which forms soft sealing with the valve core is arranged between the three cages, and the sealing surface of the valve core is in extrusion contact with the triangular sealing ring to form a soft sealing structure when the valve core falls down, so that the problems that the sealing ring is easy to slide, the valve is large in leakage and the like caused by the constant mutual motion friction of the existing sealing ring and the valve core in the motion process are solved, the sealing piece is not easy to damage, the service life is prolonged, and the safety coefficient is improved. When the valve is subjected to an uncontrollable heat temperature too high, the upper triangular sealing ring 11 and the lower triangular sealing ring 10 may melt, so that the valve cannot be sealed, and at this time, the hand wheel 14 may be manually rotated, so that the cage 3 continues to descend and the two triangular sealing rings form a new hard sealing surface, and although the situation that the valve cannot be completely leaked is impossible, the dangerous factors can be controlled within an acceptable range.
Wherein, the upper triangle seal ring 11 and the lower triangle seal ring 10 can be made of materials according to the process environment, and can be made of nonmetallic materials with high hardness and good wear resistance.
In this embodiment, two modes can be adopted for the structures of the lower cage 6 and the valve body 1: the lower cage 6 is connected with the valve body 1 in a split type, the lower cage 6 is arranged on a middle hole 15 of the valve body 1, the lower cage 6 is sealed with a step surface of the middle hole 15 through a gasket 9, and the split type structure is convenient for maintenance and replacement of the lower cage 6; in another way, the lower cage 6 is an integral structure formed by directly extending at the middle hole 15 of the valve body 1, so that the leakage problem of the split structure can be well avoided.
The middle cage 5 is provided with a flow window 17, so that people can observe the flow in the valve conveniently.
The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention, so that all equivalent modifications made by the appended claims shall be included in the scope of the present invention.
Claims (5)
1. The utility model provides a triangle double containment cage valve, includes valve body (1), valve body (1) horizontal both ends and top are equipped with the valve port respectively, valve body (1) inside is equipped with the vertical mesopore (15) of axis, valve body (1) top valve port closes through valve gap (2) sealed lid, slidable mounting has valve rod (7) in valve gap (2), valve body (1) top valve port department is equipped with valve cage (3) between mesopore (15), slidable mounting has case (8) from top to bottom in valve cage (3) inner chamber, valve rod (7) lower extreme stretch into in valve cage (3) with case (8) fixed connection, its characterized in that: the valve cage (3) comprises an upper cage (4), a middle cage (5) and a lower cage (6) which are sequentially connected from a valve port at the top of the valve body (1) to a middle hole (15), the lower cage (6) is arranged on the middle hole (15) of the valve body (1), the middle cage (5) is arranged on the upper part of the lower cage (6), a lower triangular sealing ring (10) which is tightly pressed with a lower sealing surface of the valve core (8) to form soft sealing when the valve core (8) falls is arranged on the inner side of the contact of the middle cage (4), an upper triangular sealing ring (11) which is tightly pressed with the upper sealing surface of the valve core (8) to form soft sealing when the valve core (8) falls is arranged on the inner side of the contact of the upper cage (4), and the upper end surface of the upper cage (4) is tightly pressed on the valve cover (2);
the contact part of the middle cage (5) and the lower cage (6) is provided with a lower trapezoid groove (18) which is clamped by the two cages and used for installing a lower triangular sealing ring (10), two corners of the lower triangular sealing ring (10) are embedded into the lower trapezoid groove (18) to be fixed, and the other corner of the lower triangular sealing ring (10) extends out of the lower trapezoid groove (18) to be tightly pressed with the lower sealing surface of the valve core (8) to form soft sealing; the contact part of the upper cage (4) and the middle cage (5) is provided with an upper trapezoid groove (19) which is formed by clamping two cages and used for installing an upper triangular sealing ring (11), two corners of the upper triangular sealing ring (11) are embedded into the upper trapezoid groove (19) to be fixed, and the other corner of the upper triangular sealing ring (11) extends out of the upper trapezoid groove (19) to tightly press an upper sealing surface of the valve core (8) to form soft sealing.
2. The delta double seal cage valve of claim 1 wherein: the lower cage (6) is connected with the valve body (1) in a split mode, the lower cage (6) is arranged on a middle hole (15) of the valve body (1), and the step surface between the lower cage (6) and the middle hole (15) is sealed through a gasket (9); or the lower cage (6) is of an integral structure which is formed by directly extending at the middle hole (15) of the valve body (1).
3. The delta double seal cage valve of claim 2 wherein: the middle cage (5) is provided with a flow window (17).
4. A triangular double seal cage valve according to claim 3, wherein: the valve core (8) is provided with a pressure balance hole (16).
5. The delta double seal cage valve of claim 4 wherein: the valve cover is characterized in that a support (12) is arranged at the upper end of the valve cover (2), an actuator (13) is supported on the upper portion of the support (12), a hand wheel (14) is connected to the upper input end of the actuator (13), and the lower output end of the actuator (13) is fixedly connected with the upper end of the valve rod (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052140.8A CN108825795B (en) | 2018-09-10 | 2018-09-10 | Triangular double seal cage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052140.8A CN108825795B (en) | 2018-09-10 | 2018-09-10 | Triangular double seal cage valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825795A CN108825795A (en) | 2018-11-16 |
| CN108825795B true CN108825795B (en) | 2024-02-23 |
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ID=64149135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811052140.8A Active CN108825795B (en) | 2018-09-10 | 2018-09-10 | Triangular double seal cage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825795B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757399A (en) * | 2021-09-10 | 2021-12-07 | 特瑞斯能源装备股份有限公司 | A valve sealing structure |
| CN115789276A (en) * | 2022-09-29 | 2023-03-14 | 上海凯工阀门股份有限公司 | Pressure balance valve core and valve cage sealing structure without sealing ring |
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| CN108825795A (en) | 2018-11-16 |
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Denomination of invention: Triangular double seal cage valve Granted publication date: 20240223 Pledgee: Wugong County Rural Credit Cooperative Association Pledgor: SHAANXI IMPROVEMENT FLUID CONTROL EQUIPMENT MANUFACTURING CO.,LTD. Registration number: Y2025610000135 |
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