CN105443790A - Adjustable double wedge disc - Google Patents
Adjustable double wedge disc Download PDFInfo
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- CN105443790A CN105443790A CN201510985641.1A CN201510985641A CN105443790A CN 105443790 A CN105443790 A CN 105443790A CN 201510985641 A CN201510985641 A CN 201510985641A CN 105443790 A CN105443790 A CN 105443790A
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- flashboard
- gate
- ram
- type double
- adjustable wedge
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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
- 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
- F16K3/02—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 flat sealing faces; Packings therefor
- F16K3/12—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 flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing 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
- 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
- F16K3/02—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 flat sealing faces; Packings therefor
- F16K3/16—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—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 flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
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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
- 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
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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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
- 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
- F16K3/30—Details
- F16K3/316—Guiding of the slide
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
可调节楔式双闸板，其特征在于：包括阀杆、左闸板、右闸板、顶心球、闸板叉和保持架；所述保持架设置在阀体内部，阀杆下端与保持架上部连接，保持架上部与闸板叉连接，左闸板与右闸板设置在闸板叉与保持架下部之间，顶心球支撑左闸板与右闸板，顶心球分别与左闸板和右闸板球面接触。左闸板和右闸板在保持架和闸板叉范围内由顶心球和顶心座支撑，闸板可根据阀座、阀体由温度和载荷产生的形变绕着顶心球转动，使闸板密封面与阀座密封面吻合，保证密封性，避免闸板和阀座之间的应力过大导致楔住或卡住现象。
The adjustable wedge-type double ram is characterized in that it includes a valve stem, a left ram, a right ram, a center ball, a ram fork and a cage; the cage is set inside the valve body, and the lower end of the valve stem is connected The upper part of the frame is connected, the upper part of the cage is connected with the gate fork, the left gate and the right gate are arranged between the gate fork and the lower part of the cage, the center ball supports the left gate and the right gate, and the center ball is respectively connected The ram is in spherical contact with the right ram. The left gate and the right gate are supported by the center ball and the center seat in the range of the cage and the gate fork, and the gate can rotate around the center ball according to the deformation of the valve seat and the valve body caused by temperature and load, so that The sealing surface of the gate plate coincides with the sealing surface of the valve seat to ensure the sealing performance and avoid wedging or jamming caused by excessive stress between the gate plate and the valve seat.
Description
技术领域technical field
本发明涉及一种阀门启闭件结构，具体涉及一种可调节楔式双闸板结构。The invention relates to a valve opening and closing member structure, in particular to an adjustable wedge-type double gate structure.
背景技术Background technique
闸阀在应用中具有高密封、高可靠、高适用性、高温度、高压力、介质范围宽、双向强制等诸多特点。在许多工业系统中，闸阀的应用场合都是非常相似的，即安装在管线上。闸阀启闭件一般为闸板结构，其在高温高压工况和管道载荷条件下，开关阀门并保证阀门密封性。由于闸阀具有突出的高密封性，与材料热胀冷缩以及管道载荷相互作用，现有的闸板结构非常容易楔住或卡住。In the application, the gate valve has many characteristics such as high sealing, high reliability, high applicability, high temperature, high pressure, wide medium range, and two-way forced. In many industrial systems, the application of gate valves is very similar, that is, installed in pipelines. The opening and closing parts of the gate valve are generally gate structure, which can open and close the valve and ensure the sealing performance of the valve under the conditions of high temperature and high pressure and pipeline load conditions. Due to the outstanding high sealing performance of gate valves, the interaction with thermal expansion and contraction of materials and pipeline loads, the existing gate structure is very easy to wedge or get stuck.
发明内容Contents of the invention
鉴于已有技术存在的缺陷，本发明的目的是提供一种可调节楔式双闸板闸阀，其能够在高温下补偿由温度和管端载荷共同作用下使阀门产生的变形，避免阀板发生楔住卡死的现象。In view of the defects existing in the prior art, the purpose of the present invention is to provide an adjustable wedge-type double gate valve, which can compensate the deformation of the valve caused by the joint action of temperature and pipe end load at high temperature, and avoid the deformation of the valve plate. Wedging stuck phenomenon.
为实现上述目的，本发明所采用的技术解决方案是一种可调节楔式双闸板，其包括阀杆、左闸板、右闸板、顶心球、闸板叉和保持架；所述保持架设置在阀体内部，阀杆下端与保持架上部连接，保持架上部与闸板叉连接，左闸板与右闸板设置在闸板叉与保持架下部之间，左闸板与右闸板通过顶心球连接，顶心球分别与左闸板和右闸板球面接触。所述左闸板与右闸板均与保持架球面接触。所述左闸板与右闸板的楔半角为5°，保持架上设置有导向筋，阀体底部设置导轨，导向筋与导轨相配合，所述左闸板与右闸板与流体接触面上分别设置环形半圆凹槽。In order to achieve the above object, the technical solution adopted by the present invention is an adjustable wedge-type double ram, which includes a valve stem, a left ram, a right ram, a center ball, a ram fork and a cage; The cage is set inside the valve body, the lower end of the valve stem is connected with the upper part of the cage, the upper part of the cage is connected with the gate fork, the left gate and the right gate are arranged between the gate fork and the lower part of the cage, the left gate and the right The flashboards are connected by top center balls, and the top center balls are respectively in contact with the spherical surfaces of the left flashboard and the right flashboard. Both the left ram and the right ram are in spherical contact with the cage. The wedge half angle between the left gate and the right gate is 5°, guide ribs are arranged on the cage, guide rails are arranged at the bottom of the valve body, and the guide ribs cooperate with the guide rails. The fluid contact surface between the left gate and the right gate Annular semicircular grooves are respectively arranged on the top.
所述左闸板与顶心球之间设置左顶心座，右闸板与顶心球之间设置右顶心座。所述左顶心座和右顶心座内表面堆焊耐磨硬质合金。所述左闸板的密封面与右闸板的密封面处堆焊硬质合金，宽度为28mm，厚度3mm，硬度≥HRC50，表面研磨至。A left centering seat is arranged between the left flashboard and the centering ball, and a right centering seat is arranged between the right flashboard and the centering ball. The inner surfaces of the left center seat and the right center seat are surfacing with wear-resistant hard alloy. The sealing surface of the left ram and the sealing surface of the right ram are surfacing welded hard alloy, the width is 28mm, the thickness is 3mm, the hardness is ≥ HRC50, and the surface is ground to .
双闸板通过顶心球和顶心座支撑，保持架辅助连接使闸板保持倾斜5°，闸板采用锻造形式，闸板密封面处堆焊硬质合金。闸板与流体接触的面上设置环形半圆凹面。The double ram is supported by the center ball and the center seat, and the auxiliary connection of the cage keeps the ram tilted at 5°. The ram is forged, and hard alloy is surfacing on the sealing surface of the ram. An annular semicircular concave surface is arranged on the surface of the gate plate in contact with the fluid.
所述顶心球为：材质选用耐高温轴承钢，表面研磨至。The center ball is: the material is made of high temperature resistant bearing steel, and the surface is ground to .
所述顶心座内表面堆焊耐磨硬质合金，内表面研磨至。The inner surface of the core seat is surfacing with wear-resistant hard alloy, and the inner surface is ground to .
工作原理：working principle:
可调节楔式双闸板中间设置顶心球并且与其球面接触，结合双闸板的下端面与保持架也是球面接触从而双闸板可根据阀座、阀体由温度和载荷产生的形变绕着顶心球转动（转动发生在流体通道方向和阀杆运动方向所在的平面内，也可理解为摆动），使闸板密封面与阀座密封面吻合，保证密封性，避免闸板和阀座之间的应力过大导致楔住或卡住现象。The center ball is set in the middle of the adjustable wedge-type double ram and is in spherical contact with it. Combined with the spherical contact between the lower end surface of the double ram and the cage, the double ram can move around according to the deformation of the seat and body caused by temperature and load. The top center ball rotates (the rotation occurs in the plane where the direction of the fluid channel and the direction of the valve stem move, which can also be understood as swinging), so that the sealing surface of the gate plate coincides with the sealing surface of the valve seat to ensure the sealing performance and prevent the gate plate and the valve seat from Excessive stress between the two leads to wedging or jamming.
本发明的有益效果是：The beneficial effects of the present invention are:
左闸板和右闸板在保持架和闸板叉范围内由顶心球和顶心座支撑，闸板可根据阀座、阀体由温度和载荷产生的形变绕着顶心球转动，使闸板密封面与阀座密封面吻合，保证密封性，避免闸板和阀座之间的应力过大导致楔住或卡住现象。The left gate and the right gate are supported by the center ball and the center seat within the range of the cage and the gate fork, and the gate can rotate around the center ball according to the deformation of the valve seat and the valve body caused by temperature and load, so that The sealing surface of the gate plate coincides with the sealing surface of the valve seat to ensure the sealing performance and avoid wedging or jamming caused by excessive stress between the gate plate and the valve seat.
闸板采用整体锻造技术，提高材料的强度和刚度，使闸板具有优异的刚度和强度，满足承压性能的同时，保持闸板良好的弹性变形能力，对闸板楔半角进行优化设计，选用5°作为楔半角，从而显著降低闸板密封面作用力和阀杆作用力，加宽闸板密封面宽度，为闸板和阀座在使用过程出现的磨损提供足够的余量，提高密封面加工精度，可以有效降低密封面处泄露量，并且有效降低密封面处的摩擦系数。The gate plate adopts integral forging technology to improve the strength and rigidity of the material, so that the gate plate has excellent rigidity and strength, while meeting the pressure bearing performance, it maintains good elastic deformation capacity of the gate plate, and optimizes the wedge half angle of the gate plate. 5° is used as the wedge half angle, thereby significantly reducing the force of the gate sealing surface and the valve stem, widening the width of the gate sealing surface, providing sufficient margin for the wear of the gate and valve seat during use, and improving the sealing surface. The machining accuracy can effectively reduce the leakage at the sealing surface and effectively reduce the friction coefficient at the sealing surface.
双闸板的密封面位置堆焊硬质合金，提高密封面的高温性能、耐疲劳性能、耐腐蚀性能以及密封面硬度。通过对双闸板连接形式、闸板楔半角和密封面进行了优化设计，提高闸板刚度和强度。Hard alloy is surfacing on the sealing surface of the double ram to improve the high temperature performance, fatigue resistance, corrosion resistance and hardness of the sealing surface. The rigidity and strength of the ram are improved by optimizing the connection form of the double ram, the half-angle of the ram wedge and the sealing surface.
附图说明Description of drawings
图1是可调节楔式双闸板结构的剖视图；Fig. 1 is a sectional view of the adjustable wedge-type double ram structure;
图2是保持架结构图；Figure 2 is a structural diagram of the cage;
图3是保持架导向结构示意图；Fig. 3 is a schematic diagram of the guide structure of the cage;
图4是闸板结构图；Fig. 4 is a gate structure diagram;
图5是闸板示意图；Fig. 5 is a schematic diagram of the flashboard;
附图标记如下：1、左闸板，2、右闸板，3、左顶心座，4、右顶心座，5、顶心球，6、保持架，7、阀杆，8、锁紧螺母，9、闸板叉，10、定位销，11、闸板硬质合金堆焊面，12、顶心座耐磨堆焊面，13、球面接触，14、导轨，15、导向筋。The reference signs are as follows: 1, left ram, 2, right ram, 3, left center seat, 4, right center seat, 5, center ball, 6, cage, 7, valve stem, 8, lock Tight nut, 9, ram fork, 10, positioning pin, 11, ram hard alloy overlay welding surface, 12, top core seat wear-resistant overlay welding surface, 13, spherical contact, 14, guide rail, 15, guide rib.
具体实施方式detailed description
一种可调节楔式双闸板，其包括阀杆7、左闸板1、右闸板2、顶心球5、闸板叉9和保持架6；所述阀杆7下端与保持架6上部通过螺纹连接，保持架6设置在阀体内部，保持架6下部靠近阀座底部，保持架6上部与闸板叉9连接并由轴销固定，左闸板1与右闸板2设置在闸板叉9与保持架6下部之间，左闸板1与右闸板2通过顶心球5连接，顶心球5支撑左闸板1与右闸板2，顶心球5分别与左闸板1和右闸板2球面接触。所述左闸板1与右闸板均2与保持架6球面接触。所述左闸板1与右闸板2的楔半角为5°。An adjustable wedge-type double ram, which includes a valve stem 7, a left ram 1, a right ram 2, a center ball 5, a ram fork 9 and a cage 6; the lower end of the valve stem 7 and the cage 6 The upper part is connected by thread, the retainer 6 is set inside the valve body, the lower part of the retainer 6 is close to the bottom of the valve seat, the upper part of the retainer 6 is connected with the gate fork 9 and fixed by a shaft pin, the left gate 1 and the right gate 2 are set on Between the gate fork 9 and the lower part of the cage 6, the left gate 1 and the right gate 2 are connected through the center ball 5, and the center ball 5 supports the left gate 1 and the right gate 2, and the center ball 5 is connected to the left gate respectively. Gate 1 and right gate 2 are in spherical contact. Both the left ram 1 and the right ram 2 are in spherical contact with the cage 6 . The wedge half angle between the left gate 1 and the right gate 2 is 5°.
所述左闸板1与顶心球5之间设置左顶心座3，右闸板2与顶心球5之间设置右顶心座4。所述左顶心座3和右顶心座4内表面堆焊耐磨硬质合金。所述左闸板1的密封面与右闸板2的密封面处堆焊硬质合金，宽度为28mm，厚度3mm，硬度≥HRC50，表面研磨至。所述保持架上设置有导向筋15，所述阀体底部设置导轨14。A left centering seat 3 is arranged between the left gate 1 and the centering ball 5 , and a right centering seat 4 is arranged between the right gate 2 and the centering ball 5 . The inner surfaces of the left center seat 3 and the right center seat 4 are overlay welded with wear-resistant hard alloy. The sealing surface of the left gate 1 and the sealing surface of the right gate 2 are surfacing welded hard alloy, the width is 28mm, the thickness is 3mm, the hardness is ≥ HRC50, and the surface is ground to . Guide ribs 15 are arranged on the cage, and guide rails 14 are arranged at the bottom of the valve body.
下面根据附图出示的可调节楔式双闸板结构的结构图做具体如下说明：两个闸板由顶心球5和顶心座进行支撑，通过闸板叉9和保持架6进行辅助连接和限位，使闸板在自由状态下保持倾斜5°，同时双闸板之间和闸板与保持架接触部位均采用球面接触11，使闸板在保持6架约束范围内可以任意方向转动，以补偿阀座、阀体因温度和管端载荷发生的形变。闸板采用锻造形式，闸板密封面处堆焊硬质合金。闸板与流体接触的面上设置环形半圆凹面。如图1中左闸板1和右闸板2上的四个半圆结构所示，凹面相较平面可以承受更大应力，提高了闸板的强度。The following is a detailed description based on the structural diagram of the adjustable wedge-type double ram structure shown in the accompanying drawings: the two rams are supported by the center ball 5 and the center seat, and are auxiliary connected by the ram fork 9 and the cage 6 and limit, keep the ram tilted at 5° in the free state, and at the same time, use spherical contact 11 between the double rams and the contact between the ram and the cage, so that the ram can rotate in any direction within the constraint range of the 6 frames , to compensate for the deformation of the valve seat and valve body due to temperature and pipe end load. The gate adopts forging form, and hard alloy is surfacing on the sealing surface of the gate. An annular semicircular concave surface is arranged on the surface of the gate plate in contact with the fluid. As shown by the four semicircular structures on the left gate 1 and the right gate 2 in Figure 1, the concave surface can withstand greater stress than the plane, which improves the strength of the gate.
所述顶心球5为：材质选用耐高温轴承钢，表面研磨至。The center ball 5 is as follows: the material is made of high-temperature-resistant bearing steel, and the surface is ground to .
所述两个顶心座内表面堆焊耐磨硬质合金，内表面研磨至。The inner surfaces of the two core seats are surfacing welded with wear-resistant carbide, and the inner surfaces are ground to .
所述闸板密封面堆焊硬质合金精加工后宽度为28mm，厚度3mm，硬度≥HRC50，表面研磨至。The gate sealing surface has a width of 28 mm, a thickness of 3 mm, a hardness ≥ HRC50, and the surface is ground to .
Claims (8)
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| CN201510985641.1A CN105443790B (en) | 2015-12-25 | 2015-12-25 | Adjustable wedge-type double disc |
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| CN201510985641.1A CN105443790B (en) | 2015-12-25 | 2015-12-25 | Adjustable wedge-type double disc |
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| CN105443790A true CN105443790A (en) | 2016-03-30 |
| CN105443790B CN105443790B (en) | 2018-05-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015612A (en) * | 2016-07-27 | 2016-10-12 | 特尔阀门高科技有限公司 | Double-acting-force blow-down valve |
| CN111219497A (en) * | 2018-11-27 | 2020-06-02 | 中核苏阀科技实业股份有限公司 | Parallel double gate plate with guide ribs |
| CN115854052A (en) * | 2022-12-04 | 2023-03-28 | 凯斯通阀门有限公司 | High-pressure flat gate valve |
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| CN203963075U (en) * | 2014-07-31 | 2014-11-26 | 湖北泰和石化设备有限公司 | A kind of complex spring connects Wedge type double gate board gate valve |
| CN204284498U (en) * | 2014-11-19 | 2015-04-22 | 南通龙源电站阀门有限公司 | The two sphere plunger tip structure of a kind of gate valve |
| CN204610976U (en) * | 2015-05-20 | 2015-09-02 | 杭州大泉泵业科技有限公司 | Lead under one one-way valve |
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| CN2169001Y (en) * | 1993-07-19 | 1994-06-15 | 乐清县自动化仪表三厂 | Dual-wedge gate valve |
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| CN103591324A (en) * | 2013-11-18 | 2014-02-19 | 交城县鑫升机械有限公司 | Superhigh-temperature flat gate valve |
| CN203963075U (en) * | 2014-07-31 | 2014-11-26 | 湖北泰和石化设备有限公司 | A kind of complex spring connects Wedge type double gate board gate valve |
| CN204284498U (en) * | 2014-11-19 | 2015-04-22 | 南通龙源电站阀门有限公司 | The two sphere plunger tip structure of a kind of gate valve |
| CN204610976U (en) * | 2015-05-20 | 2015-09-02 | 杭州大泉泵业科技有限公司 | Lead under one one-way valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015612A (en) * | 2016-07-27 | 2016-10-12 | 特尔阀门高科技有限公司 | Double-acting-force blow-down valve |
| CN106015612B (en) * | 2016-07-27 | 2018-04-17 | 特尔阀门高科技有限公司 | Dual force drain valve |
| CN111219497A (en) * | 2018-11-27 | 2020-06-02 | 中核苏阀科技实业股份有限公司 | Parallel double gate plate with guide ribs |
| CN115854052A (en) * | 2022-12-04 | 2023-03-28 | 凯斯通阀门有限公司 | High-pressure flat gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105443790B (en) | 2018-05-22 |
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Denomination of invention: Adjustable Wedge Double Ram Effective date of registration: 20230927 Granted publication date: 20180522 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2023980059639 |
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Granted publication date: 20180522 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2023980059639 |
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Denomination of invention: Adjustable wedge-shaped double gate Granted publication date: 20180522 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2024980045328 |
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Granted publication date: 20180522 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2024980045328 |