CN103410997B - High pressure relief formula double disc parallel seat single-face hard sealing gate valve - Google Patents
High pressure relief formula double disc parallel seat single-face hard sealing gate valve Download PDFInfo
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Abstract
本发明涉及双闸板闸阀，具体涉及一种高压卸压式平行双闸板单面硬密封闸阀。它包括阀体、阀座、闸板、闸板架、阀杆、阀盖和密封机构，闸板装在阀体中间，阀座固定装在闸板与阀体之间，阀杆下端连接在闸板架上端，闸板架贯穿连接在闸板上，阀盖套在阀杆外面，且阀盖与阀体连接一起，密封机构装在阀杆与阀盖之间，所述的闸板分为左闸板和右闸板，左闸板内侧面为轴结构，该轴结构的轴线与阀体流道轴线平行，右闸板内侧面为可套在左闸板轴上的轴套结构，左闸板与右闸板之间设有预紧弹簧；所述的左闸板上端开有泄压孔。
The invention relates to a gate valve with double gates, in particular to a high-pressure relief type parallel double gates single-sided hard-sealed gate valve. It includes valve body, valve seat, gate, gate frame, valve stem, valve cover and sealing mechanism. The gate is installed in the middle of the valve body, the valve seat is fixed between the gate and the valve body, and the lower end of the valve stem is connected to the The upper end of the gate frame, the gate frame is connected through the gate plate, the valve cover is set outside the valve stem, and the valve cover is connected with the valve body, the sealing mechanism is installed between the valve stem and the valve cover, and the gate is divided into two parts. It is a left gate and a right gate. The inner surface of the left gate is a shaft structure. The axis of the shaft structure is parallel to the axis of the flow channel of the valve body. The inner surface of the right gate is a sleeve structure that can be sleeved on the shaft of the left gate. A pre-tightening spring is arranged between the left gate and the right gate; a pressure relief hole is opened on the upper end of the left gate.
Description
技术领域 technical field
本发明涉及双闸板闸阀，具体涉及一种高压卸压式平行双闸板单面硬密封闸阀。 The invention relates to a gate valve with double gates, in particular to a high-pressure relief type parallel double gates single-sided hard-sealed gate valve.
背景技术 Background technique
国内外传统闸阀都是采用带斜面的单、双闸板结构，与阀座组成一个斜面的密封副，靠阀杆的下推力来达到强制密封的效果。平行闸板式闸阀通常采用双闸板结构，其主要包括阀体，伸入阀体内的阀杆，与阀杆连接的左、右闸板等。其截断原理是，阀杆推动左、右闸板进入阀体的流道内，左闸板在阀体流道一侧介质压力的作用下推动右闸板的密封面压向另一侧，实现流道的自密封。传统闸阀平行双闸板设计是双向密封、压力900Lb以下。其存在缺点是：密封时需要流体的压力较高，压力较低无法推动右闸板紧贴密封面，因此低压时密封效果差。 Traditional gate valves both at home and abroad adopt single and double gate structures with slopes, which form a sloped sealing pair with the valve seat, and the forced sealing effect is achieved by the downward thrust of the valve stem. The parallel gate valve usually adopts a double gate structure, which mainly includes a valve body, a valve stem extending into the valve body, and left and right gates connected to the valve stem. The cut-off principle is that the valve stem pushes the left and right gates into the flow passage of the valve body, and the left gate pushes the sealing surface of the right gate to the other side under the action of the medium pressure on one side of the flow passage of the valve body to realize flow. Tao's self-sealing. The traditional gate valve parallel double gate design is two-way sealing, pressure below 900Lb. Its disadvantages are: high fluid pressure is required for sealing, and the low pressure cannot push the right gate close to the sealing surface, so the sealing effect is poor at low pressure.
发明内容 Contents of the invention
为了解决上述问题，本发明提出了一种高压卸压式平行双闸板单面硬密封闸阀，解决高压力、卸压式、单向密封、平行双闸板的技术问题，满足使用工况。 In order to solve the above problems, the present invention proposes a high-pressure relief type parallel double gate single-sided hard-sealed gate valve, which solves the technical problems of high pressure, pressure relief, one-way sealing, and parallel double gates, and meets the operating conditions.
为了达到上述发明目的，本发明提出了以下技术方案： In order to achieve the above-mentioned purpose of the invention, the present invention proposes the following technical solutions:
高压卸压式平行双闸板单面硬密封闸阀，它包括阀体、阀座、闸板、闸板架、阀杆、阀盖和密封机构，闸板装在阀体中间，阀座固定装在闸板与阀体之间，阀杆下端连接在闸板架上端，闸板架贯穿连接在闸板上，阀盖套在阀杆外面，且阀盖与阀体连接一起，密封机构装在阀杆与阀盖之间，所述的闸板分为左闸板和右闸板，左闸板内侧面为轴结构，该轴结构的轴线与阀体流道轴线平行，右闸板内侧面为可套在左闸板轴上的轴套结构，左闸板与右闸板之间设有预紧弹簧；所述的左闸板上端开有泄压孔。 High-pressure relief type parallel double gate single-sided hard-sealed gate valve, which includes valve body, valve seat, gate plate, gate frame, valve stem, valve cover and sealing mechanism. The gate plate is installed in the middle of the valve body, and the seat is fixed. Between the gate plate and the valve body, the lower end of the valve stem is connected to the upper end of the gate frame, the gate frame is connected through the gate plate, the valve cover is sleeved outside the valve stem, and the valve cover is connected with the valve body, and the sealing mechanism is installed on the Between the valve stem and the bonnet, the gate is divided into a left gate and a right gate. The inner surface of the left gate is a shaft structure. The axis of the shaft structure is parallel to the axis of the flow channel of the valve body. For the sleeve structure that can be set on the shaft of the left ram, a pre-tightening spring is arranged between the left ram and the right ram; the upper end of the left ram is provided with a pressure relief hole.
所述的阀盖与阀体之间装有密封环，且阀盖与阀体通过螺母和双头螺栓固定连接一起。 A sealing ring is installed between the valve cover and the valve body, and the valve cover and the valve body are fixedly connected together through nuts and stud bolts.
所述的密封机构包括上密封、填料、压套和压板，上密封装在阀盖下端，位于阀杆与阀盖之间，填料装在阀盖上端，压套装在填料上面，压板压在压套上方，且压板通过六角螺母、活节螺栓和圆柱销固定连接在阀盖上端，压板上方连接有支架。 The sealing mechanism includes an upper seal, packing, gland and pressure plate, the upper seal is installed at the lower end of the valve cover, between the valve stem and the valve cover, the packing is installed at the upper end of the valve cover, the pressure sleeve is placed on the packing, and the pressure plate presses The top of the sleeve, and the pressure plate is fixedly connected to the upper end of the valve cover through hex nuts, swing bolts and cylindrical pins, and a bracket is connected above the pressure plate.
所述的高压卸压式平行双闸板单面硬密封闸阀的使用压力不超过1500Lb。 The working pressure of the high-pressure relief type parallel double gate single-sided hard-sealed gate valve does not exceed 1500Lb.
本发明的优点是： The advantages of the present invention are:
1）左闸板内侧面为轴结构，该轴结构的轴线与阀体流道轴线平行，右闸板内侧面为可套在左闸板轴上的轴套结构，左闸板与右闸板之间设有预紧弹簧； 1) The inner surface of the left gate is a shaft structure, and the axis of the shaft structure is parallel to the axis of the flow channel of the valve body. The inner surface of the right gate is a sleeve structure that can be sleeved on the shaft of the left gate. The left gate and the right gate There is a preload spring between them;
2）密封：原双向密封 , 现为单向密封,结构新颖，阀门维修方便；阀门的密封性能更加可靠，管道系统的介质压力越高，其密封性能越好，保证了管路系统的正常运行； 2) Sealing: The original two-way seal is now a one-way seal, with a novel structure and easy maintenance of the valve; the sealing performance of the valve is more reliable, the higher the medium pressure of the pipeline system, the better the sealing performance, ensuring the normal operation of the pipeline system ;
3）阀门开启关闭时候的操作力矩小，是传统同规格阀门的65％，大多降低了能耗； 3) The operating torque when the valve is opened and closed is small, which is 65% of the traditional valve of the same specification, which mostly reduces energy consumption;
4）压力增大 ：原900Lb以下，现为1500Lb。阀门密封副之间的摩擦小，大大提高了阀门的使用寿命。 4) Increased pressure: the original 900Lb, now 1500Lb. The friction between the valve sealing pairs is small, which greatly improves the service life of the valve.
附图说明 Description of drawings
图1是本发明的示意图。 Figure 1 is a schematic diagram of the present invention.
具体实施方式 Detailed ways
为了对本发明进一步说明，下面结合说明书附图来介绍： In order to further illustrate the present invention, introduce below in conjunction with accompanying drawing of description:
参照附图1，高压卸压式平行双闸板单面硬密封闸阀，它包括阀体1、阀座2、闸板、闸板架17、阀杆4、阀盖7和密封机构，闸板装在阀体1中间，阀座2固定装在闸板与阀体1之间，阀杆4下端连接在闸板架17上端，闸板架17贯穿连接在闸板上，阀盖7套在阀杆4外面，且阀盖7与阀体1连接一起，密封机构装在阀杆4与阀盖7之间，所述的闸板分为左闸板3和右闸板19，左闸板3内侧面为轴结构，该轴结构的轴线与阀体流道轴线平行，右闸板19内侧面为可套在左闸板3轴上的轴套结构，左闸板3与右闸板19之间设有预紧弹簧18；所述的左闸板3上端开有泄压孔20。 Referring to accompanying drawing 1, the high-pressure relief type parallel double-gate single-sided hard-sealed gate valve includes a valve body 1, a valve seat 2, a gate plate, a gate frame 17, a valve stem 4, a valve cover 7 and a sealing mechanism, and the gate plate Installed in the middle of the valve body 1, the valve seat 2 is fixedly installed between the gate plate and the valve body 1, the lower end of the valve stem 4 is connected to the upper end of the gate frame 17, the gate frame 17 is connected through the gate plate, and the valve cover 7 is set on the Outside the valve stem 4, and the valve cover 7 is connected with the valve body 1. The sealing mechanism is installed between the valve stem 4 and the valve cover 7. The gate is divided into a left gate 3 and a right gate 19. The left gate 3. The inner surface is a shaft structure. The axis of the shaft structure is parallel to the axis of the flow channel of the valve body. The inner surface of the right gate 19 is a sleeve structure that can be sleeved on the left gate 3 axis. The left gate 3 and the right gate 19 A pre-tension spring 18 is arranged between them; a pressure relief hole 20 is opened on the upper end of the left gate 3 .
所述的阀盖7与阀体1之间装有密封环5，且阀盖7与阀体1通过螺母15和双头螺栓16固定连接一起。 A sealing ring 5 is installed between the valve cover 7 and the valve body 1 , and the valve cover 7 and the valve body 1 are fixedly connected together by nuts 15 and stud bolts 16 .
所述的密封机构包括上密封6、填料8、压套10和压板11，上密封6装在阀盖7下端，位于阀杆4与阀盖7之间，填料8装在阀盖7上端，压套10装在填料8上面，压板11压在压套10上方，且压板11通过六角螺母13、活节螺栓14和圆柱销9固定连接在阀盖7上端，压板11上方连接有支架12。 The sealing mechanism includes an upper seal 6, a packing 8, a gland 10 and a pressure plate 11. The upper seal 6 is installed at the lower end of the valve cover 7, between the valve stem 4 and the valve cover 7, and the packing 8 is installed at the upper end of the valve cover 7. The pressure sleeve 10 is mounted on the filler 8, the pressure plate 11 is pressed above the pressure sleeve 10, and the pressure plate 11 is fixedly connected to the upper end of the valve cover 7 through the hex nut 13, the swing bolt 14 and the cylindrical pin 9, and the support 12 is connected above the pressure plate 11.
所述的高压卸压式平行双闸板单面硬密封闸阀的使用压力不超过1500Lb。 The working pressure of the high-pressure relief type parallel double gate single-sided hard-sealed gate valve does not exceed 1500Lb.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310374900.8A CN103410997B (en) | 2013-08-26 | 2013-08-26 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
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| CN201310374900.8A CN103410997B (en) | 2013-08-26 | 2013-08-26 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
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| CN103410997A CN103410997A (en) | 2013-11-27 |
| CN103410997B true CN103410997B (en) | 2015-08-19 |
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| CN105003673B (en) * | 2015-07-03 | 2019-05-10 | 南通国电电站阀门有限公司 | High pressure welded connection type parallel gate valve with bypass blowdown |
| CN105090607B (en) * | 2015-07-13 | 2017-10-31 | 哈托利海托阀门（杭州）有限公司 | A kind of high leakproofness gate valve |
| CN107228204A (en) * | 2017-06-23 | 2017-10-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical No leakage bellows forging parallel slide valve |
| CN110043676A (en) * | 2019-04-26 | 2019-07-23 | 江苏圣泰阀门有限公司 | A kind of pressure seal parallel slide valve |
| CN115370778A (en) * | 2021-05-20 | 2022-11-22 | 盾安环境技术有限公司 | Reversible solenoid valve and refrigerating system thereof |
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| DE4117577A1 (en) * | 1991-05-29 | 1992-12-03 | Sempell Babcock Ag | Knife gate valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN201891860U (en) * | 2010-11-08 | 2011-07-06 | 南通国电电站阀门有限公司 | Single-face hard sealing parallel gate plate type gate valve |
| CN103148231A (en) * | 2013-03-20 | 2013-06-12 | 南通市电站阀门有限公司 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
| CN103148230A (en) * | 2013-03-15 | 2013-06-12 | 浙江中德自控阀门有限公司 | Automatic pressure release structure for double disk parallel gate valve |
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2013
- 2013-08-26 CN CN201310374900.8A patent/CN103410997B/en not_active Withdrawn - After Issue
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4117577A1 (en) * | 1991-05-29 | 1992-12-03 | Sempell Babcock Ag | Knife gate valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN201891860U (en) * | 2010-11-08 | 2011-07-06 | 南通国电电站阀门有限公司 | Single-face hard sealing parallel gate plate type gate valve |
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Address after: 226557, Taoyuan West Road, Chengnan street, Rugao City, Jiangsu, Nantong province 1 Patentee after: NANTONG STATE ELECTRIC POWER VALVE Co.,Ltd. Address before: 226557, Taoyuan West Road, Taoyuan Town, Nantong City, Jiangsu, Rugao 1 Patentee before: NANTONG STATE ELECTRIC POWER VALVE Co.,Ltd. |
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