WO2022133900A1 - High-pressure large-diameter two-way hard-sealing butterfly valve - Google Patents
High-pressure large-diameter two-way hard-sealing butterfly valve Download PDFInfo
- Publication number
- WO2022133900A1 WO2022133900A1 PCT/CN2020/139002 CN2020139002W WO2022133900A1 WO 2022133900 A1 WO2022133900 A1 WO 2022133900A1 CN 2020139002 W CN2020139002 W CN 2020139002W WO 2022133900 A1 WO2022133900 A1 WO 2022133900A1
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- WIPO (PCT)
- Prior art keywords
- valve
- valve seat
- valve body
- pressure large
- butterfly
- Prior art date
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims abstract description 8
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- 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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/228—Movable sealing bodies
Definitions
- the invention relates to the field of valves, in particular to a high-pressure large-diameter bidirectional hard-sealed butterfly valve.
- Butterfly valve also known as flap valve
- flap valve is a kind of regulating valve with simple structure, and can also be used for on-off control of low-pressure pipelines.
- the three-eccentric hard sealing butterfly on the market has a fixed valve seat, and the valve seat and the valve body are one-piece structure.
- This valve seat structure can only withstand the pressure of one-way sealing.
- This kind of one-way sealing valve cannot meet the high requirements, especially in the working condition of high pressure and two-way sealing, the valve with this one-way sealing structure cannot meet the working condition requirements, and there are limitations.
- the present invention provides a high-pressure large-diameter bidirectional hard-sealed butterfly valve with good practicability and good sealing performance.
- a high-pressure large-diameter bidirectional hard-sealed butterfly valve comprising a valve body, a valve stem, a butterfly plate, a packing, a packing gland and a valve seat, and the butterfly plate is installed in the valve body flow channel and It is connected with the valve stem by pins, and the valve body is provided with blocks and gear steps at the front and rear sides of the valve seat.
- the valve seat adopts a piston valve seat and can be movably installed on the block and the stopper.
- the valve seat has the first state that when the medium flows forward in the valve body flow channel, the medium force assists the disc to seal and press the valve seat to the first state at the gear step, and the medium reverses in the valve body flow channel When flowing, the medium force pushes the valve seat to move in the direction of the block and seals with the butterfly plate.
- the outer circumferential surface of the valve seat is provided with several installation grooves, and explosion-proof O-rings are respectively arranged in the installation grooves. and graphite circles.
- the front and rear sides of the explosion-proof O-ring are provided with RPTFE retaining rings which are matched and clamped.
- the butterfly plate is provided with a sealing ring arranged in the circumferential direction and a pressing plate for fixing the sealing ring.
- the sealing surface between the valve seat and the sealing ring is a conical surface that cooperates with each other.
- the sealing ring includes several layers of bidirectional stainless steel and flexible graphite that are alternately stacked.
- the sealing surface of the valve seat is surfacing with cemented carbide.
- the stopper is detachably installed in the valve body, and the pressing plate is fixedly installed on the butterfly plate by means of bolts.
- the beneficial effects of the present invention are: the technical solution can realize bidirectional sealing, when the medium flows in the forward direction, the medium force assists the butterfly plate sealing; when the medium flows in the reverse direction, the medium force pushes the valve seat to move to the left and realizes sealing with the butterfly valve, and in addition ,
- a graphite ring is set between the valve seat and the valve body, which plays a fireproof role.
- An explosion-proof O-ring is set between the valve seat and the valve body, which is suitable for high pressure environments and has the advantages of good practicability and good sealing performance.
- FIG. 1 is a schematic structural diagram of a high-pressure large-diameter bidirectional hard-sealed butterfly valve according to an embodiment of the present invention.
- FIG. 2 is a partial enlarged view of A in FIG. 1 .
- a high-pressure large-diameter two-way hard-sealed butterfly valve includes a valve body 1, a valve stem 2, a disc 3, a packing 4, a packing gland 5 and a valve seat 6, and the disc 3 is installed on the valve.
- the valve body 1 is in the flow channel of the valve body 1 and is connected with the valve stem 2 by pins.
- the valve body 1 is provided with a stopper 7 and a gear step 8 at the front and rear sides of the valve seat 6, and the valve seat 6 adopts a piston valve seat. And can be movably installed back and forth between the block 7 and the gear step 8, the valve seat 6 has the medium force to assist the disc 3 to seal and press the valve seat 6 when the medium flows forward in the flow channel of the valve body 1.
- the outer circumferential surface of the valve seat 6 is provided with a plurality of installation grooves 9, and the installation grooves 9 are respectively provided with an explosion-proof O-ring 10 and a graphite ring 11, and the front and rear sides of the explosion-proof O-ring 10 are provided with matching clips.
- RPTFE retaining ring 12; a graphite ring is set between the valve seat and the valve body, which plays a fireproof role, and an explosion-proof O-ring and a RPTFE retaining ring are set between the valve seat and the valve body, which is suitable for high pressure environment.
- the circle and the valve body cavity are easier to seal under high pressure.
- the butterfly plate 3 is provided with a sealing ring 13 arranged in the circumferential direction and a pressure plate 14 for fixing the sealing ring 13.
- the stopper 7 is detachably installed in the valve body 1, and the pressure plate 14 is fixed and installed by bolts.
- the butterfly plate sealing ring and the valve seat in this embodiment can be disassembled, which is convenient for maintenance and replacement. After the stopper is removed from the valve body, the valve seat can be replaced.
- the sealing surface between the valve seat 6 and the sealing ring 13 is a conical surface that cooperates with each other, and the piston-type valve seat can be automatically centered by the conical surface when assembling and closing the valve.
- the sealing ring 13 includes several layers of bidirectional stainless steel 131 and flexible graphite 132 arranged alternately.
- the sealing surface of the valve seat 6 is surfacing with cemented carbide, which has the advantage of good wear resistance.
- the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
- installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
- the specific meanings of the above terms in the present invention can be understood in specific situations.
- “plurality” means two or more.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A high-pressure large-diameter two-way hard-sealing butterfly valve, relating to the field of valves, and comprising a valve body (1), a valve stem (2), a disc (3), packing (4), a packing gland (5), and a valve seat (6). The disc (3) is mounted in a flow channel of the valve body (1) and is connected to the valve stem (2) by means of a pin; the valve body (1) is provided with a stop (7) and a gear step (8) at the front and rear sides of the valve seat (6); the valve seat (6) is a piston valve seat and can be movably mounted between the stop (7) and the gear step (8) in a front-rear direction; the valve seat (6) has a first state in which when a medium flows forward in the flow channel of the valve body (1), medium force assists the disc (3) to seal and press the valve seat (6) to the gear step (8), and has a second state in which when the medium flows reversely in the flow channel of the valve body (1), the medium force pushes the valve seat (6) to move towards the stop (7) and sealingly match the disc (3); the outer circumferential surface of the valve seat (6) is provided with several mounting grooves (9); and an explosion-proof O-shaped ring (10) and a graphite ring (11) are respectively provided in the mounting grooves (9). The butterfly valve has the advantages of good practicability and good sealing.
Description
本发明涉及阀门领域，具体涉及一种高压大口径双向硬密封蝶阀。The invention relates to the field of valves, in particular to a high-pressure large-diameter bidirectional hard-sealed butterfly valve.
蝶阀又叫翻板阀，是一种结构简单的调节阀，同时也可用于低压管道的开关控制。目前市场上的三偏心硬密封蝶，其中阀座都是采用固定式阀座，阀座和阀体为一体式结构，这种阀座结构只能承受单向密封的压力。这种单向密封的阀门是不能满足高要求的，特别是在高压、双向密封的工况下，此种单向密封结构的阀门是不能满足工况要求的，存在局限性。Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure, and can also be used for on-off control of low-pressure pipelines. At present, the three-eccentric hard sealing butterfly on the market has a fixed valve seat, and the valve seat and the valve body are one-piece structure. This valve seat structure can only withstand the pressure of one-way sealing. This kind of one-way sealing valve cannot meet the high requirements, especially in the working condition of high pressure and two-way sealing, the valve with this one-way sealing structure cannot meet the working condition requirements, and there are limitations.
为了克服背景技术的不足，本发明提供一种实用性好，密封性好的高压大口径双向硬密封蝶阀。In order to overcome the deficiencies of the background technology, the present invention provides a high-pressure large-diameter bidirectional hard-sealed butterfly valve with good practicability and good sealing performance.
本发明所采用的技术方案：一种高压大口径双向硬密封蝶阀，包括阀体、阀杆、蝶板、填料、填料压盖以及阀座，所述蝶板安装在所述阀体流道内且与所述阀杆通过销连接，所述阀体在阀座前后两侧的位置设有挡块和挡位台阶，所述阀座采用活塞式阀座且可前后活动地安装在挡块和挡位台阶之间，所述阀座具有介质在阀体流道内正向流动时，介质力辅助蝶板密封并将阀座压至档位台阶处的第一状态以及介质在阀体流道内反向流动时，介质力推动阀座向挡块方向移动且与蝶板密封配合的第二状态，所述阀座外周向面设有若干个安装槽，所述安装槽内分别设有防爆O型圈和石墨圈。The technical solution adopted in the present invention is: a high-pressure large-diameter bidirectional hard-sealed butterfly valve, comprising a valve body, a valve stem, a butterfly plate, a packing, a packing gland and a valve seat, and the butterfly plate is installed in the valve body flow channel and It is connected with the valve stem by pins, and the valve body is provided with blocks and gear steps at the front and rear sides of the valve seat. The valve seat adopts a piston valve seat and can be movably installed on the block and the stopper. Between the position steps, the valve seat has the first state that when the medium flows forward in the valve body flow channel, the medium force assists the disc to seal and press the valve seat to the first state at the gear step, and the medium reverses in the valve body flow channel When flowing, the medium force pushes the valve seat to move in the direction of the block and seals with the butterfly plate. The outer circumferential surface of the valve seat is provided with several installation grooves, and explosion-proof O-rings are respectively arranged in the installation grooves. and graphite circles.
所述防爆O型圈的前后两侧设有配合夹持的RPTFE挡圈。The front and rear sides of the explosion-proof O-ring are provided with RPTFE retaining rings which are matched and clamped.
所述蝶板设有沿周向设置的密封环以及将密封环固定的压板。The butterfly plate is provided with a sealing ring arranged in the circumferential direction and a pressing plate for fixing the sealing ring.
所述阀座与密封环之间的密封面为相互配合的圆锥面。The sealing surface between the valve seat and the sealing ring is a conical surface that cooperates with each other.
所述密封环包括若干层交错层叠设置的双向不锈钢和柔性石墨。The sealing ring includes several layers of bidirectional stainless steel and flexible graphite that are alternately stacked.
所述阀座密封面堆焊硬质合金。The sealing surface of the valve seat is surfacing with cemented carbide.
所述挡块在阀体内为可拆装式安装，所述压板通过螺栓固定安装在蝶板上。The stopper is detachably installed in the valve body, and the pressing plate is fixedly installed on the butterfly plate by means of bolts.
本发明的有益效果是：本技术方案可以实现双向密封，介质正向流动时，介质力辅助蝶板密封；当介质反向流动时，介质力推动阀座向左移动并与蝶阀实现密封，另外，在阀座与阀体之间设置石墨圈，起防火作用，阀座与阀体之间设置防爆O型圈，适用于高压环境下，具有实用性好，密封性好的优点。The beneficial effects of the present invention are: the technical solution can realize bidirectional sealing, when the medium flows in the forward direction, the medium force assists the butterfly plate sealing; when the medium flows in the reverse direction, the medium force pushes the valve seat to move to the left and realizes sealing with the butterfly valve, and in addition , A graphite ring is set between the valve seat and the valve body, which plays a fireproof role. An explosion-proof O-ring is set between the valve seat and the valve body, which is suitable for high pressure environments and has the advantages of good practicability and good sealing performance.
图1为本发明实施例高压大口径双向硬密封蝶阀的结构示意图。1 is a schematic structural diagram of a high-pressure large-diameter bidirectional hard-sealed butterfly valve according to an embodiment of the present invention.
图2为图1中A处的局部放大图。FIG. 2 is a partial enlarged view of A in FIG. 1 .
下面结合附图对本发明实施例作进一步说明：Embodiments of the present invention are further described below in conjunction with the accompanying drawings:
如图所示，一种高压大口径双向硬密封蝶阀，包括阀体1、阀杆2、蝶板3、填料4、填料压盖5以及阀座6，所述蝶板3安装在所述阀体1流道内且与所述阀杆2通过销连接，所述阀体1在阀座6前后两侧的位置设有挡块7和挡位台阶8，所述阀座6采用活塞式阀座且可前后活动地安装在挡块7和挡位台阶8之间，所述阀座6具有介质在阀体1流道内正向流动时，介质力辅助蝶板3密封并将阀座6压至档位台阶处的第一状态以及介质在阀体1流道内反向流动时，介质力推动阀座6向挡块7方向移动且与蝶板3密封配合的第二状态；本技术方案可以实现双向密封，介质正向流动时，介质力辅助蝶板密封；当介质反向流动时，介质力推动阀座向左移动并与蝶阀实现密封，具有实用性好，密封性好的优点。As shown in the figure, a high-pressure large-diameter two-way hard-sealed butterfly valve includes a valve body 1, a valve stem 2, a disc 3, a packing 4, a packing gland 5 and a valve seat 6, and the disc 3 is installed on the valve. The valve body 1 is in the flow channel of the valve body 1 and is connected with the valve stem 2 by pins. The valve body 1 is provided with a stopper 7 and a gear step 8 at the front and rear sides of the valve seat 6, and the valve seat 6 adopts a piston valve seat. And can be movably installed back and forth between the block 7 and the gear step 8, the valve seat 6 has the medium force to assist the disc 3 to seal and press the valve seat 6 when the medium flows forward in the flow channel of the valve body 1. The first state at the gear step and the second state in which the medium force pushes the valve seat 6 to move in the direction of the block 7 and seals with the butterfly plate 3 when the medium flows in the reverse direction in the flow channel of the valve body 1; this technical solution can realize Two-way sealing, when the medium flows forward, the medium force assists the butterfly plate sealing; when the medium flows in the reverse direction, the medium force pushes the valve seat to move to the left and seals with the butterfly valve, which has the advantages of good practicability and good sealing performance.
所述阀座6外周向面设有若干个安装槽9，所述安装槽9内分别设有防爆O型圈10和石墨圈11，所述防爆O型圈10的前后两侧设有配合夹持的RPTFE挡圈12；在阀座与阀体之间设置石墨圈，起防火作用，阀座与阀体之间设置防爆O型圈和RPTFE挡圈，适用于高压环境下，使阀座外圆与阀体内腔在高压状态下更容易密封。The outer circumferential surface of the valve seat 6 is provided with a plurality of installation grooves 9, and the installation grooves 9 are respectively provided with an explosion-proof O-ring 10 and a graphite ring 11, and the front and rear sides of the explosion-proof O-ring 10 are provided with matching clips. RPTFE retaining ring 12; a graphite ring is set between the valve seat and the valve body, which plays a fireproof role, and an explosion-proof O-ring and a RPTFE retaining ring are set between the valve seat and the valve body, which is suitable for high pressure environment. The circle and the valve body cavity are easier to seal under high pressure.
所述蝶板3设有沿周向设置的密封环13以及将密封环13固定的压板14，所述挡块7在阀体1内为可拆装式安装，所述压板14通过螺栓固定安装在蝶板3上；本实施例中的的蝶板密封环及阀座均可拆卸，方便维修及更换，将挡块从阀体上拆除后，可以对阀座进行更换。The butterfly plate 3 is provided with a sealing ring 13 arranged in the circumferential direction and a pressure plate 14 for fixing the sealing ring 13. The stopper 7 is detachably installed in the valve body 1, and the pressure plate 14 is fixed and installed by bolts. On the butterfly plate 3; the butterfly plate sealing ring and the valve seat in this embodiment can be disassembled, which is convenient for maintenance and replacement. After the stopper is removed from the valve body, the valve seat can be replaced.
所述阀座6与密封环13之间的密封面为相互配合的圆锥面，活塞式阀座在装配和关闭阀门时，能靠圆锥面自动对中。The sealing surface between the valve seat 6 and the sealing ring 13 is a conical surface that cooperates with each other, and the piston-type valve seat can be automatically centered by the conical surface when assembling and closing the valve.
所述密封环13包括若干层交错层叠设置的双向不锈钢131和柔性石墨132，双向不锈钢强度高、耐腐蚀性好、又具有适当的韧性，满足使用要求。The sealing ring 13 includes several layers of bidirectional stainless steel 131 and flexible graphite 132 arranged alternately.
所述阀座6密封面堆焊硬质合金，具有耐磨性能好的优点。The sealing surface of the valve seat 6 is surfacing with cemented carbide, which has the advantage of good wear resistance.
在本发明的描述中，需要说明的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientations or positional relationships indicated by vertical, horizontal, top, bottom, inside, and outside are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying It is described, rather than indicated or implied, that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。此外，在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.
各位技术人员须知：虽然本发明已按照上述具体实施方式做了描述，但是本发明的发明思想并不仅限于此发明，任何运用本发明思想的改装，都将纳入本专利专利权保护范围内。Note to all technicians: Although the present invention has been described according to the above-mentioned specific embodiments, the inventive idea of the present invention is not limited to this invention, and any modification using the idea of the present invention will be included in the protection scope of this patent right.
Claims (7)
- 一种高压大口径双向硬密封蝶阀，包括阀体（1）、阀杆（2）、蝶板（3）、填料（4）、填料压盖（5）以及阀座（6），所述蝶板（3）安装在所述阀体（1）流道内且与所述阀杆（2）通过销连接，其特征在于：所述阀体（1）在阀座（6）前后两侧的位置设有挡块（7）和挡位台阶（8），所述阀座（6）采用活塞式阀座且可前后活动地安装在挡块（7）和挡位台阶（8）之间，所述阀座（6）具有介质在阀体（1）流道内正向流动时，介质力辅助蝶板（3）密封并将阀座（6）压至档位台阶处的第一状态以及介质在阀体（1）流道内反向流动时，介质力推动阀座（6）向挡块（7）方向移动且与蝶板（3）密封配合的第二状态；所述阀座（6）外周向面设有若干个安装槽（9），所述安装槽（9）内分别设有防爆O型圈（10）和石墨圈（11）。A high-pressure large-diameter bidirectional hard-sealed butterfly valve, comprising a valve body (1), a valve stem (2), a butterfly plate (3), a packing (4), a packing gland (5) and a valve seat (6). The plate (3) is installed in the flow channel of the valve body (1) and is connected with the valve stem (2) by pins, characterized in that the valve body (1) is located at the front and rear sides of the valve seat (6). A stopper (7) and a gear step (8) are provided, and the valve seat (6) adopts a piston valve seat and can be movably installed between the stopper (7) and the gear step (8), so The valve seat (6) has a first state in which the medium force assists the butterfly plate (3) to seal and press the valve seat (6) to the gear step when the medium flows forward in the flow channel of the valve body (1), and the medium is in the first state. When the valve body (1) flows in the reverse direction, the medium force pushes the valve seat (6) to move in the direction of the stopper (7) and is in a second state in which it is in sealing cooperation with the butterfly plate (3); the outer circumference of the valve seat (6) Several installation grooves (9) are arranged on the facing surface, and explosion-proof O-rings (10) and graphite rings (11) are respectively arranged in the installation grooves (9).
- 根据权利要求1所述的高压大口径双向硬密封蝶阀，其特征在于：所述防爆O型圈（10）的前后两侧设有配合夹持的RPTFE挡圈（12）。The high-pressure large-diameter bidirectional hard-sealed butterfly valve according to claim 1, characterized in that: the front and rear sides of the explosion-proof O-ring (10) are provided with RPTFE retaining rings (12) which are matched and clamped.
- 根据权利要求1所述的高压大口径双向硬密封蝶阀，其特征在于：所述蝶板（3）设有沿周向设置的密封环（13）以及将密封环（13）固定的压板（14）。The high-pressure large-diameter bidirectional hard-sealed butterfly valve according to claim 1, characterized in that: the butterfly plate (3) is provided with a sealing ring (13) arranged in the circumferential direction and a pressing plate (14) for fixing the sealing ring (13). ).
- 根据权利要求3所述的高压大口径双向硬密封蝶阀，其特征在于：所述阀座（6）与密封环（13）之间的密封面为相互配合的圆锥面。The high-pressure large-diameter bidirectional hard-sealed butterfly valve according to claim 3, characterized in that: the sealing surface between the valve seat (6) and the sealing ring (13) is a conical surface that cooperates with each other.
- 根据权利要求3所述的高压大口径双向硬密封蝶阀，其特征在于：所述密封环（13）包括若干层交错层叠设置的双向不锈钢（131）和柔性石墨（132）。The high-pressure large-diameter bidirectional hard-sealed butterfly valve according to claim 3, characterized in that: the sealing ring (13) comprises several layers of bidirectional stainless steel (131) and flexible graphite (132) that are alternately stacked.
- 根据权利要求5所述的高压大口径双向硬密封蝶阀，其特征在于：所述阀座（6）密封面堆焊硬质合金。The high-pressure large-diameter bidirectional hard-sealed butterfly valve according to claim 5, characterized in that: the sealing surface of the valve seat (6) is surfacing with cemented carbide.
- 根据权利要求3所述的高压大口径双向硬密封蝶阀，其特征在于：所述挡块（7）在阀体（1）内为可拆装式安装，所述压板（14）通过螺栓固定安装在蝶板（3）上。The high-pressure large-diameter bidirectional hard-sealed butterfly valve according to claim 3, characterized in that: the stopper (7) is detachably installed in the valve body (1), and the pressure plate (14) is fixedly installed by bolts on the disc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/139002 WO2022133900A1 (en) | 2020-12-24 | 2020-12-24 | High-pressure large-diameter two-way hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/139002 WO2022133900A1 (en) | 2020-12-24 | 2020-12-24 | High-pressure large-diameter two-way hard-sealing butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| WO2022133900A1 true WO2022133900A1 (en) | 2022-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2020/139002 WO2022133900A1 (en) | 2020-12-24 | 2020-12-24 | High-pressure large-diameter two-way hard-sealing butterfly valve |
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| Country | Link |
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| WO (1) | WO2022133900A1 (en) |
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