CN103527787B - A kind of control valve for power station adopting the metal sealing coil structures of convenient disassembly - Google Patents
A kind of control valve for power station adopting the metal sealing coil structures of convenient disassembly Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000003754 machining Methods 0.000 abstract description 8
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
本发明涉及一种金属密封圈，其特征在于：所述的密封圈为环形，其下端具有一个楔形尖部，上端具有一个沿径向凸出的环形肋边，且该环形肋边的上表面为自定心球面或锥面结构。本发明的优点在于：该结构的密封圈应用于阀门时，压紧法兰不水平亦能实现与密封圈自动对正，促使一周受力均衡，改善密封受力状态。密封圈的上部环形肋边，使得密封圈能够提供一个拆卸的着力点，同时起到加强筋的作用；不但提高结构的刚性，便于密封圈机加工和阀门装配与阀门拆卸，简化机加工夹具设计，提高机加工精度，最终保证密封性能。
The invention relates to a metal sealing ring, which is characterized in that: the sealing ring is annular, its lower end has a wedge-shaped tip, its upper end has an annular rib protruding radially, and the upper surface of the annular rib It is a self-centering spherical or conical structure. The invention has the advantage that when the sealing ring of this structure is applied to a valve, automatic alignment with the sealing ring can be realized even if the compression flange is not horizontal, so as to promote force balance in a circle and improve the state of sealing force. The upper annular rib of the sealing ring enables the sealing ring to provide a focus point for disassembly, and at the same time acts as a reinforcing rib; it not only improves the rigidity of the structure, but also facilitates the machining of the sealing ring, valve assembly and valve disassembly, and simplifies the design of machining fixtures , improve machining accuracy, and ultimately ensure sealing performance.
Description
技术领域 technical field
本发明涉及一种密封圈，还涉及一种采用密封圈结构的电站调节阀。 The invention relates to a sealing ring, and also relates to a power station regulating valve adopting a sealing ring structure.
背景技术 Background technique
用于火电蒸汽机组的电站调节阀主要分布在锅炉、汽轮机和辅机三大系统中。火力发电站的热控技术一般将机组的安全经济运行就作为主要的目标，而各种各样的调节阀就成为实现安全运行的专用辅助设备。机组参数越高，机组容量越大，对于电站调节阀（包括：最小流量阀、给水旁路调节阀、减温水调节阀等等）的性能要求如密封性能、调节特性、可靠性要求越高。 The power station control valves used for thermal power steam units are mainly distributed in the three major systems of boilers, steam turbines and auxiliary machines. The thermal control technology of thermal power plants generally takes the safe and economical operation of the unit as the main goal, and various regulating valves become special auxiliary equipment for safe operation. The higher the parameters of the unit, the greater the capacity of the unit, and the higher the performance requirements for the power station control valve (including: minimum flow valve, feed water bypass control valve, desuperheating water control valve, etc.), such as sealing performance, regulation characteristics, and reliability requirements.
例如：目前的电站调节阀结构中，阀体与阀盖的对外密封采用上端平面下端楔形的密封圈结构，该种密封圈直接安装于阀体与阀盖之间，上端平面依靠上部法兰止口压紧后，使其下端楔式尖部膨胀实现阀体与阀盖的对外密封。其虽能够在一定程度上满足密封要求，但也存在一定的缺点：由于楔式尖部膨胀压死，解体拆卸阀门将非常困难。并且机加工时这种密封圈由于结构原因，刚性较差，极其容易变形，加工工艺性较差，对夹具装夹要求较高，不利于提高加工精度，难以保证设计要求的密封性能。因此研发一种便于拆卸、且密封性能好、刚性高、易于装夹加工的新型密封圈结构势在必行。 For example: in the current power station control valve structure, the external sealing of the valve body and the bonnet adopts a wedge-shaped sealing ring structure at the upper end plane and the lower end. After the mouth is pressed tightly, the wedge-shaped tip at the lower end expands to realize the external sealing of the valve body and the valve cover. Although it can meet the sealing requirements to a certain extent, it also has certain disadvantages: it will be very difficult to disassemble and disassemble the valve due to the swelling and crushing of the wedge-shaped tip. Moreover, due to structural reasons, this kind of sealing ring has poor rigidity, is extremely easy to deform, has poor processing technology, and has high requirements for fixture clamping, which is not conducive to improving the processing accuracy, and it is difficult to ensure the sealing performance required by the design. Therefore, it is imperative to develop a new sealing ring structure that is easy to disassemble, has good sealing performance, high rigidity, and is easy to clamp and process.
发明内容 Contents of the invention
本发明要解决的技术问题是提供一种拆卸方便、密封性能好、刚性高且机加工装夹不易变形的金属密封圈，还提供一种采用该金属密封圈结构的电站调节阀。 The technical problem to be solved by the present invention is to provide a metal sealing ring which is easy to disassemble, has good sealing performance, high rigidity and is not easily deformed by machining and clamping, and also provides a power station regulating valve adopting the structure of the metal sealing ring.
为解决上述技术问题，本发明的技术方案为：一种拆卸方便的金属密封圈，其创新点在于：所述的密封圈为环形，其下端具有一个楔形尖部，上端具有一个沿径向凸出的环形肋边，且该环形肋边的上表面为自定心球面或锥面结构。 In order to solve the above technical problems, the technical solution of the present invention is: a metal sealing ring that is easy to disassemble. The annular rib is out, and the upper surface of the annular rib is a self-centering spherical or conical structure.
优选的，所述密封圈的下端侧面设置有一圈环形槽，且该环形槽位于密封圈非楔形斜面侧的平直面。 Preferably, the lower end side of the sealing ring is provided with an annular groove, and the annular groove is located on the flat surface of the non-wedge inclined side of the sealing ring.
优选的，所述的环形槽为圆弧形槽，且其圆弧半径R为3~5mm。 Preferably, the annular groove is an arc-shaped groove, and its arc radius R is 3-5mm.
一种采用上述金属密封圈结构的电站调节阀，其创新点在于：包括阀体、阀盖、压紧法兰、密封圈，阀盖，阀盖的下端伸入阀体中空上部，阀盖的下端具有一个沿径向伸出的环形凸缘，且该环形凸缘的上表面为一个环形锥面；密封圈，密封圈下端具有一个楔形尖部，上端具有一个沿径向凸出的环形肋边，且该环形肋边的上表面为自定心球面或锥面结构；压紧法兰，压紧法兰的内圈与下端面交界处设置有一圈与密封圈上端相配的环形镶嵌槽；压紧法兰通过螺栓、螺母固定在阀体的上端面，并通过环形镶嵌槽均匀压紧密封圈的上端环形肋边实现阀盖与阀体的密封。 A power station regulating valve adopting the above-mentioned metal sealing ring structure, its innovative point is that it includes a valve body, a valve cover, a compression flange, a sealing ring, a valve cover, the lower end of the valve cover extends into the hollow upper part of the valve body, and the valve cover The lower end has a radially protruding annular flange, and the upper surface of the annular flange is an annular conical surface; the sealing ring, the lower end of the sealing ring has a wedge-shaped tip, and the upper end has a radially protruding annular rib side, and the upper surface of the annular rib is a self-centering spherical or conical surface structure; compression flange, the junction of the inner ring of the compression flange and the lower end surface is provided with a circle of annular inlay grooves matching the upper end of the sealing ring; The compression flange is fixed on the upper end surface of the valve body through bolts and nuts, and the annular rib at the upper end of the sealing ring is evenly pressed through the annular inlay groove to realize the sealing between the valve cover and the valve body.
本发明的优点在于：密封圈的上部为自定心球面或锥面结构，即顶部轮廓线呈锥面或球面设计，这样安装时即使上部用于压紧的法兰或压盖不水平亦能实现与密封圈自动对正，促使一周受力均衡。同时，使得压紧用的法兰或压盖自动对中，增加接触面积，降低接触压应力，更合理改善密封受力状态。 The advantage of the present invention is that: the upper part of the sealing ring is a self-centering spherical or conical structure, that is, the top contour is designed as a conical or spherical surface, so that even if the upper flange or gland used for compression is not horizontal during installation, it can Realize the automatic alignment with the sealing ring, and promote the balance of force in one week. At the same time, the flange or gland used for compression is automatically centered, the contact area is increased, the contact pressure stress is reduced, and the stress state of the seal is more reasonably improved.
密封圈的上部环形肋边，使得密封圈能够提供一个拆卸的着力点，同时起到加强筋的作用；不但提高结构的刚性，便于密封圈机夹装和阀门装配与阀门拆卸，简化机加工夹具设计，提高机加工精度，最终保证密封性能。而密封圈的下端侧面设置有一圈环形槽，在压紧法兰压紧密封圈时，密封圈的下端能够顺利变形密封，提高密封效果。 The upper annular rib of the sealing ring enables the sealing ring to provide a point of disassembly, and at the same time acts as a reinforcing rib; it not only improves the rigidity of the structure, but also facilitates the machine clamping of the sealing ring, valve assembly and valve disassembly, and simplifies the machining fixture Design, improve machining accuracy, and finally guarantee the sealing performance. And the lower end side of the sealing ring is provided with an annular groove, when the flange is pressed to compress the sealing ring, the lower end of the sealing ring can be smoothly deformed and sealed to improve the sealing effect.
该密封圈为该类产品的关键零件，可以广泛应用于各类电站阀门产品，尤其适用于火力发电蒸汽机组用作最小流量调节阀、减温水调节阀、给水旁路调节阀以及电站高温高压高压差疏水阀等产品，用于调节流量、压力以及介质隔离。 The sealing ring is a key part of this type of product and can be widely used in various power station valve products, especially for thermal power generation steam units as minimum flow regulating valves, desuperheating water regulating valves, feed water bypass regulating valves, and high-temperature, high-pressure and high-pressure valves for power stations. Differential traps and other products are used to regulate flow, pressure and media isolation.
附图说明 Description of drawings
图1为本发明中金属密封圈结构示意图。 Fig. 1 is a structural schematic diagram of a metal sealing ring in the present invention.
图2为本发明电站调节阀实施例结构示意图。 Fig. 2 is a schematic structural diagram of an embodiment of a power station regulating valve of the present invention.
具体实施方式 detailed description
本发明揭示了一种新型金属密封圈结构，其如图1所示，在密封圈8的下端具有一个楔形尖部8a，上端具有一个沿径向凸出的环形肋边8b，且该环形肋边8b的上表面为自定心球面或锥面结构。密封圈8的下端侧面设置有一圈环形槽8c，且该环形槽8c位于密封圈非楔形斜面侧的平直面。 The present invention discloses a novel metal sealing ring structure, which, as shown in Figure 1, has a wedge-shaped tip 8a at the lower end of the sealing ring 8, and a radially protruding annular rib 8b at the upper end, and the annular rib The upper surface of the side 8b is a self-centering spherical or conical structure. An annular groove 8c is provided on the lower end side of the sealing ring 8, and the annular groove 8c is located on the straight surface of the non-wedge-shaped slope side of the sealing ring.
本实施例为应用于电站最小流量调节阀的结构设计图。请参阅图1、2，包括阀体1、节流盘4、阀芯5、平衡密封圈7、密封圈8、阀杆10、阀盖11、填料压盖14、填料15、填料16、螺母18、螺栓19、压紧法兰20、并帽22。 This embodiment is a structural design diagram applied to a minimum flow regulating valve of a power station. Please refer to Figure 1 and 2, including valve body 1, throttle plate 4, valve core 5, balance sealing ring 7, sealing ring 8, valve stem 10, valve cover 11, packing gland 14, packing 15, packing 16, nuts 18, bolt 19, compression flange 20, and cap 22.
阀体1中孔上部安装阀盖11，阀杆10的下端穿过阀盖11伸入阀体1内腔，阀杆10的下端与内置于阀体中的阀芯5连接。阀杆10下部端面与阀芯采用锥面体设计，配合时，锥面具备自动对正功能，有效消除阀芯与阀杆连接后的同心度误差。阀芯5的上部采用并帽22抱紧阀芯5与阀杆10。具体的说，并帽22与阀杆10采用螺纹连接，并帽22旋转时，与阀杆10自动抱紧，消除两者的配合间隙，抱紧后采用弹性销9与阀杆锁死，防止松动。另外，阀芯5外圆设计了平衡密封圈7，辅助阀盖与阀芯的密封，同时相当于轴承保证阀芯的上下运动时更平稳。 A valve cover 11 is installed on the top of the middle hole of the valve body 1, and the lower end of the valve rod 10 passes through the valve cover 11 and stretches into the inner chamber of the valve body 1, and the lower end of the valve rod 10 is connected with the valve core 5 built in the valve body. The end surface of the lower part of the valve stem 10 and the valve core adopt a conical design. When mating, the conical surface has an automatic alignment function, which effectively eliminates the concentricity error after the valve core and the valve rod are connected. The upper part of the spool 5 adopts a joint cap 22 to hold the spool 5 and the valve stem 10 tightly. Specifically, the parallel cap 22 is threadedly connected to the valve stem 10, and when the parallel cap 22 rotates, it will automatically hold tightly to the valve stem 10 to eliminate the gap between the two. After tightening, the elastic pin 9 is used to lock the valve stem to prevent loose. In addition, a balance sealing ring 7 is designed on the outer circle of the valve core 5 to assist the sealing of the valve cover and the valve core, and at the same time, it is equivalent to a bearing to ensure that the valve core moves more smoothly when moving up and down.
阀体1中孔下部安装阀座3，阀座3上安装节流盘4，阀座3与阀体1之间设置下密封圈2。其中，阀芯5与阀座3、下密封圈2构成阀门的主密封，阀芯下部端面棱角为锥面设计，与阀座3内孔棱角对应构成主体密封副。当阀芯与阀座接触吻合压紧时，阀门处于密封关闭状态；当两者分离时，阀门处于打开状态。阀芯5与节流盘4构成节流组件，阀芯上下移动时，对应节流盘的不同开度，实现流量的大小调节。 A valve seat 3 is installed on the lower part of the middle hole of the valve body 1, a throttling disk 4 is installed on the valve seat 3, and a lower sealing ring 2 is arranged between the valve seat 3 and the valve body 1. Among them, the valve core 5, the valve seat 3, and the lower sealing ring 2 form the main seal of the valve, and the corners of the lower end face of the valve core are designed as conical surfaces, which correspond to the corners of the inner hole of the valve seat 3 to form the main sealing pair. When the spool is in contact with the valve seat, the valve is in a sealed closed state; when the two are separated, the valve is in an open state. The valve core 5 and the throttle plate 4 constitute a throttle assembly, and when the valve core moves up and down, it corresponds to different openings of the throttle plate to realize the adjustment of the flow rate.
在开启时阀杆10先行动作上移，带动阀芯5上下移动，实现开度调节。阀芯5上端开设了平衡孔A，消除了阀芯上腔的压力，实现阀芯无压差开启，这有利于降低执行器推力，从而降低产品配置成本。 When opening, the valve stem 10 moves up first, and drives the valve core 5 to move up and down, so as to realize opening adjustment. A balance hole A is opened on the upper end of the spool 5, which eliminates the pressure in the upper cavity of the spool and realizes the opening of the spool without pressure difference, which is beneficial to reduce the thrust of the actuator, thereby reducing the cost of product configuration.
阀盖11与阀杆10之间设置填料15和填料16，填料15、16通过填料压盖14与螺栓13、螺母12压紧，进而构成阀杆10的外部密封，避免阀杆上下移动不会引起外漏。 A packing 15 and a packing 16 are arranged between the valve cover 11 and the valve stem 10, and the packing 15 and 16 are pressed together by the packing gland 14 and the bolt 13 and the nut 12, thereby constituting the external seal of the valve stem 10, so as to prevent the valve stem from moving up and down. cause leakage.
阀盖11的下端具有一个沿径向伸出的环形凸缘，且该环形凸缘的上表面为一个环形锥面。 The lower end of the valve cover 11 has an annular flange protruding radially, and the upper surface of the annular flange is an annular conical surface.
而密封圈8的下端具有一个楔形尖部8a，上端具有一个沿径向凸出的环形肋边8b，且该环形肋边8b的上表面为自定心球面或锥面结构。密封圈8的下端侧面设置有一圈环形槽8c，且该环形槽8c位于密封圈非楔形斜面侧的平直面。 The lower end of the sealing ring 8 has a wedge-shaped tip 8a, and the upper end has a radially protruding annular rib 8b, and the upper surface of the annular rib 8b is a self-centering spherical or conical surface structure. An annular groove 8c is provided on the lower end side of the sealing ring 8, and the annular groove 8c is located on the straight surface of the non-wedge-shaped slope side of the sealing ring.
作为本发明更具体的实施方案：该环形槽8c为圆弧形槽，且其圆弧半径R为3~5mm。 As a more specific embodiment of the present invention: the annular groove 8c is an arc-shaped groove, and the radius R of the arc is 3-5mm.
压紧法兰20的内圈与下端面交界处设置有一圈与密封圈上端相配的环形镶嵌槽；压紧法兰20通过螺栓19、螺母10固定在阀体1的上端面，并通过环形镶嵌槽均匀压紧密封圈8的上端环形肋边实现阀盖11与阀体1的密封。 The junction of the inner ring and the lower end surface of the compression flange 20 is provided with an annular mosaic groove matching the upper end of the sealing ring; The groove evenly presses the upper annular rib of the sealing ring 8 to realize the sealing between the valve cover 11 and the valve body 1 .
工作原理： working principle:
驱动装置连接阀杆，当阀杆向下移动时，节流件的过流面积减小，阀门输出流量减小，当阀芯移动到底后，主密封副先行关闭，阀门处于关闭状态。开启时，阀杆带动阀芯打开，由于阀芯移动处于无压差状态，降低了执行器工作推力。随着阀芯的向上移动，节流件流道面积渐渐增大，阀门流量相应增大，从而实现阀门的流量的调节控制。 The driving device is connected to the valve stem. When the valve stem moves downward, the flow area of the throttling part decreases, and the output flow of the valve decreases. When the valve core moves to the bottom, the main sealing pair closes first, and the valve is in a closed state. When it is opened, the valve stem drives the valve core to open, and since the valve core moves in a state of no pressure difference, the working thrust of the actuator is reduced. With the upward movement of the valve core, the area of the flow channel of the throttling piece gradually increases, and the flow rate of the valve increases correspondingly, so as to realize the regulation and control of the flow rate of the valve.
密封原理： Sealing principle:
密封圈的上部为自定心球面或锥面结构，即顶部轮廓线呈锥面或球面设计，压紧法兰上设置与之对应的镶嵌槽，在压紧法兰不水平时亦能实现与密封圈自动对正。 The upper part of the sealing ring is a self-centering spherical or conical structure, that is, the top contour is conical or spherical, and the corresponding inlay groove is set on the compression flange, which can also be realized when the compression flange is not horizontal. The sealing ring is automatically aligned.
密封圈的上部环形肋边，起到加强筋的作用的同时使得密封圈能够提供一个拆卸的着力点，可简化机加工夹具设计，提高机加工精度，确保保证密封性能。而密封圈的下端侧面设置有一圈环形槽，在压紧法兰压紧密封圈时，密封圈的下端能够顺利向环形槽侧变形实现更好的密封。 The upper annular rib of the sealing ring acts as a reinforcing rib and at the same time enables the sealing ring to provide a point of disassembly, which can simplify the design of machining fixtures, improve machining accuracy, and ensure the sealing performance. And the lower end side of the sealing ring is provided with an annular groove, when the flange is pressed to compress the sealing ring, the lower end of the sealing ring can be smoothly deformed to the side of the annular groove to achieve better sealing.
本领域技术人员应当了解，上述采用该密封圈结构的电站调节阀实施例仅仅是示意性的，不是局限性的，该密封圈不仅仅适用于该类调节阀，同样适用于其他型式阀门的阀体对外密封。 Those skilled in the art should understand that the above embodiment of the power station regulating valve using the sealing ring structure is only illustrative and not limiting. The sealing ring is not only suitable for this type of regulating valve, but also suitable for other types of valves. The body is sealed externally.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528818.6A CN103527787B (en) | 2013-11-01 | 2013-11-01 | A kind of control valve for power station adopting the metal sealing coil structures of convenient disassembly |
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| CN201310528818.6A CN103527787B (en) | 2013-11-01 | 2013-11-01 | A kind of control valve for power station adopting the metal sealing coil structures of convenient disassembly |
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| CN103527787A CN103527787A (en) | 2014-01-22 |
| CN103527787B true CN103527787B (en) | 2016-03-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224560B (en) * | 2016-08-29 | 2018-06-12 | 约翰斯顿流体科技（无锡）有限公司 | A kind of regulating valve for being conveniently replaceable rubber ring |
| CN106704593B (en) * | 2016-12-29 | 2018-06-19 | 常熟市南湖化工设备制造有限责任公司 | A kind of gland packing box of fast demountable |
| CN106884983A (en) * | 2017-04-17 | 2017-06-23 | 杭州华惠阀门有限公司 | Removable seal structure |
| CN107477246A (en) * | 2017-10-16 | 2017-12-15 | 吴忠仪表有限责任公司 | A kind of easy-maintaining spray desuperheating valve of high-performance |
| CN113007588B (en) * | 2021-03-29 | 2022-03-25 | 艾肯（江苏）工业技术有限公司 | Self-centering floating ball trap |
| CN114233854A (en) * | 2021-12-28 | 2022-03-25 | 南通市电站阀门有限公司 | Metal self-sealing ring for valve, machining tool and machining method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499667Y (en) * | 2001-06-28 | 2002-07-10 | 张华� | Cutting sleeve type pipeline joint |
| CN200943797Y (en) * | 2006-08-28 | 2007-09-05 | 青岛海力威密封有限公司 | Assembled type pipe joint pipe clip rubber gasket ring |
| CN200961708Y (en) * | 2006-11-08 | 2007-10-17 | 南通市电站阀门有限公司 | High differential pressure series power station isolation valve |
| CN201858448U (en) * | 2010-11-01 | 2011-06-08 | 无锡众扬金属制品有限公司 | Seal ring for stainless steel pipe fittings |
| CN202392318U (en) * | 2011-12-05 | 2012-08-22 | 张关莲 | Pipeline connector |
| CN202851944U (en) * | 2012-10-29 | 2013-04-03 | 天津远达滤清器有限公司 | Sealing ring for engine oil filter facilitating detachment of engine oil filter |
| CN202927039U (en) * | 2012-11-09 | 2013-05-08 | 际华三五一七橡胶制品有限公司 | T-shaped rubber sealing ring |
-
2013
- 2013-11-01 CN CN201310528818.6A patent/CN103527787B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499667Y (en) * | 2001-06-28 | 2002-07-10 | 张华� | Cutting sleeve type pipeline joint |
| CN200943797Y (en) * | 2006-08-28 | 2007-09-05 | 青岛海力威密封有限公司 | Assembled type pipe joint pipe clip rubber gasket ring |
| CN200961708Y (en) * | 2006-11-08 | 2007-10-17 | 南通市电站阀门有限公司 | High differential pressure series power station isolation valve |
| CN201858448U (en) * | 2010-11-01 | 2011-06-08 | 无锡众扬金属制品有限公司 | Seal ring for stainless steel pipe fittings |
| CN202392318U (en) * | 2011-12-05 | 2012-08-22 | 张关莲 | Pipeline connector |
| CN202851944U (en) * | 2012-10-29 | 2013-04-03 | 天津远达滤清器有限公司 | Sealing ring for engine oil filter facilitating detachment of engine oil filter |
| CN202927039U (en) * | 2012-11-09 | 2013-05-08 | 际华三五一七橡胶制品有限公司 | T-shaped rubber sealing ring |
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| CN103527787A (en) | 2014-01-22 |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A power station regulating valve with a metal sealing ring structure that is easy to disassemble Effective date of registration: 20230619 Granted publication date: 20160323 Pledgee: Industrial and Commercial Bank of China Limited Rugao Branch Pledgor: NANTONG POWER STATION VALVE Co.,Ltd. Registration number: Y2023980044733 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20160323 Pledgee: Industrial and Commercial Bank of China Limited Rugao Branch Pledgor: NANTONG POWER STATION VALVE Co.,Ltd. Registration number: Y2023980044733 |