A gas turbine pipeline anti-surge valve
Patent Information
- Application Number
- CN202522358169.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-06
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-06
AI Technical Summary
它需要放置在两根管道之间的法兰上进行安装，然而由于其前后两面外壁过于平整光滑，缺乏有效的定位或导向结构，在安装过程中，操作人员很难快速、准确地将对夹式蝶阀的内壁与两根管道的内壁对齐贯通，往往需要反复调整和对齐，这不仅耗费大量的时间和精力，还显著降低了整个安装工作的效率，影响燃机机组的按时投入使用和后续运行维护
[0014]有益效果：需要对防喘阀进行安装时，预先在两侧的管道上安装法兰盘，阀体采用对夹式安装结构，本身不携带法兰盘，节约了安装空间，将法兰盘与密封圈之间的对接组件进行对接，即先将阀体旋转一定角度，使得阀体边缘的密封圈上的凸起部能够卡接进入到凹槽的法兰盘的凹槽内部，然后缓慢转动阀体，使得凸起部在凹槽内部转动，与此同时锁定件也在密封圈的边缘上的环形槽内部转动，当锁定件与凸起部相接触时，凸起部将锁定件向上顶入滑槽，然后随着继续转动，锁定件来到了锁定槽的位置后，锁定件在弹簧的作用下弹出，卡接在锁定槽的内部，从而实现阀体与两侧法兰盘的初步卡接，后续通过固定组件进行安装即可，相较于传统的连接方式，该结构具有便于快速对接安装的效果。
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Figure CN224904406U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-surge valve technology, and in particular to an anti-surge valve for gas turbine pipelines. Background Technology
[0002] Gas turbines are core power equipment in modern industry, primarily used for power generation, aviation, and ship propulsion. Their working principle is similar to a large air compressor: air is first compressed to a high-pressure state through multiple stages of blades, then fuel is injected and ignited, and the high-temperature gas drives the turbine to rotate and perform work. This process places extremely high demands on materials; the turbine blades must withstand temperatures exceeding 1000°C and rotate tens of thousands of times per minute.
[0003] Anti-surge valves are critical safety devices in gas turbine piping, specifically designed to prevent compressor surge. Surge is like the violent vibration caused when a water pipe is suddenly blocked, potentially leading to unit damage or even shutdown. When the compressor intake is insufficient, airflow vortices form between the blades, triggering surge. Anti-surge valves monitor in real time using pressure sensors; upon detecting an anomaly, they immediately open a bypass pipe to expel excess air, allowing the compressor to resume stable operation. For example, during power plant startup, anti-surge valves quickly adjust the airflow to ensure a smooth transition. Their design requires a response time of less than 3 seconds, the materials must be resistant to high-temperature corrosion, and they are typically installed in the middle of the compressor or at the exhaust port, effectively preventing surge and reducing energy loss. Without anti-surge valves, a gas turbine is like a high-pressure vessel without a safety valve, posing a serious safety hazard. Patent documents have been published.
[0004] Existing wafer-type butterfly valves have significant shortcomings in installation. They require placement on a flange between two pipes; however, due to the excessively smooth and flat outer walls, lacking effective positioning or guiding structures, operators find it difficult to quickly and accurately align the inner wall of the butterfly valve with the inner walls of the two pipes during installation. Repeated adjustments and alignments are often necessary, which not only consumes considerable time and effort but also significantly reduces the efficiency of the entire installation process, impacting the timely commissioning and subsequent operation and maintenance of the gas turbine unit. Utility Model Content
[0005] Purpose of the utility model: The purpose of this utility model is to provide a gas turbine pipeline anti-surge valve to solve the above-mentioned shortcomings in the prior art.
[0006] Technical Solution: A gas turbine pipeline anti-surge valve includes a valve body, a valve wheel, and a valve plate. The valve plate is disposed inside the valve body and is connected to the valve wheel via a valve stem. A double-acting pneumatic cylinder is disposed at the top of the valve body. The double-acting pneumatic cylinder is used for bidirectional rotation of the valve wheel to control the closing and opening of the valve plate. Sealing rings are fixedly installed at both ends of the valve body. Pipes for installation are disposed on both sides of the valve body. Flanges are welded to both pipes. Flange holes are opened on the flanges. A mating assembly is disposed between the flanges and the sealing rings. The valve body is connected to the flanges on both sides through the mating assembly and then fixed by a fixing assembly.
[0007] As a further description of the above technical solution: the docking assembly includes grooves formed on the inner edges of the two flanges, and the interior of the grooves is elastically connected with a plurality of locking elements.
[0008] As a further description of the above technical solution: the docking assembly also includes an annular groove formed on the edge of the sealing ring, and a plurality of protrusions are fixedly installed inside the annular groove, and locking grooves that are adapted to the plurality of locking parts are formed on the plurality of protrusions.
[0009] As a further description of the above technical solution: the inner wall of the flange groove is provided with multiple sliding grooves, and each of the multiple sliding grooves is provided with a spring, and the multiple springs are connected to the locking member.
[0010] As a further description of the above technical solution: both sides of the locking member are provided with rounded corners; the rounded corners are provided so that when the locking member comes into contact with the protrusion, the protrusion can push it upward into the sliding groove along the rounded corners of the locking member's edge.
[0011] As a further description of the above technical solution: the fixing component includes four lifting lugs fixedly installed on the valve body. Each of the four lifting lugs has a through hole. When the locking member is locked and connected with the locking groove, the four through holes are coaxially arranged with four of the flange holes on the flange.
[0012] As a further description of the above technical solution: the fixing assembly also includes a plurality of bolts passing through the flange holes on the two flanges, wherein four bolts pass through the through holes on the four lifting lugs respectively, and the ends of the plurality of bolts are locked by nuts.
[0013] As a further description of the above technical solution: each of the bolts passing through the four through holes has two locking washers threaded on it, and the two locking washers are respectively pressed against both sides of the lifting lug.
[0014] Beneficial effects: When installing the anti-surge valve, flanges are pre-installed on the pipes on both sides. The valve body adopts a clamp-on installation structure and does not carry a flange, saving installation space. The flange and the sealing ring are then connected by the mating components. First, the valve body is rotated at a certain angle so that the protrusion on the sealing ring on the edge of the valve body can engage with the groove of the flange. Then, the valve body is slowly rotated so that the protrusion rotates inside the groove. At the same time, the locking element also rotates inside the annular groove on the edge of the sealing ring. When the locking element contacts the protrusion, the protrusion pushes the locking element upward into the sliding groove. As rotation continues, the locking element reaches the locking groove position and is ejected by the spring, engaging inside the locking groove. This achieves the initial engagement between the valve body and the flanges on both sides. Subsequent installation can be done using the fixing components. Compared with traditional connection methods, this structure facilitates quick and easy installation. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a gas turbine pipeline anti-surge valve proposed in this utility model;
[0016] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;
[0017] Figure 3 This is a schematic diagram of the main structure of this utility model;
[0018] Figure 4 This is a three-dimensional exploded structural diagram of the present invention;
[0019] Figure 5 This is a three-dimensional structural diagram of the present invention when the valve body is connected to the flanges of the pipes at both ends;
[0020] Figure 6 This is a three-dimensional structural diagram illustrating the process of connecting the valve body to the flange in this utility model.
[0021] Figure 7 This is a three-dimensional structural diagram of the sealing ring installed on the valve body of this utility model;
[0022] Figure 8 This is a cross-sectional structural diagram of the flange of this utility model;
[0023] Figure 9 This utility model Figure 8 A magnified structural diagram at point A;
[0024] Figure 10 This utility model Figure 5 A schematic diagram of the cross-sectional structure;
[0025] Figure 11 This utility model Figure 10 A magnified structural diagram at point B.
[0026] Legend:
[0027] 1. Valve wheel; 2. Double-acting pneumatic cylinder; 3. Valve body; 4. Valve plate; 5. Pipeline; 6. Flange; 7. Bolt; 8. Nut; 9. Lifting lug; 10. Locking gasket; 11. Through hole; 12. Sealing ring; 13. Flange hole; 14. Groove; 15. Locking element; 16. Annular groove; 17. Protrusion; 18. Locking groove; 19. Slide groove; 20. Spring; 21. Rounded corner. Detailed Implementation
[0028] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0029] Reference Figure 1-11 A gas turbine pipeline anti-surge valve includes a valve body 3, a valve wheel 1, and a valve plate 4. The valve plate 4 is internally located within the valve body 3 and connected to the valve wheel 1 via a valve stem. A double-acting pneumatic cylinder 2 is mounted at the top of the valve body 3, controlling the opening and closing of the valve plate 4 by bidirectional rotation of the valve wheel 1. Sealing rings 12 are fixedly installed at both ends of the valve body 3. Pipes 5 for installation are provided on both sides of the valve body 3, and flanges 6 are welded to both pipes 5. Flange holes 13 are provided on the flanges 6. A mating assembly is provided between the flanges 6 and the sealing rings 12. The valve body 3 is connected to the flanges 6 on both sides via the mating assembly and then fixed by a fixing assembly. When installing the anti-surge valve, the flanges 6 are pre-installed on the pipes 5 on both sides. The valve body 3 adopts a clamp-type installation structure and does not carry flanges 6 itself, saving installation space. To assemble the valve body 3, the valve body 3 is rotated at a certain angle so that the protrusion 17 on the sealing ring 12 on the edge of the valve body 3 can engage with the groove 14 of the flange 6. Then, the valve body 3 is slowly rotated so that the protrusion 17 rotates inside the groove 14. At the same time, the locking member 15 also rotates inside the annular groove 16 on the edge of the sealing ring 12. When the locking member 15 contacts the protrusion 17, the protrusion 17 pushes the locking member 15 upward into the slide groove 19. As the rotation continues, the locking member 15 reaches the position of the locking groove 18. Under the action of the spring 20, the locking member 15 pops out and engages inside the locking groove 18, thus achieving the initial engagement between the valve body 3 and the flanges 6 on both sides. The subsequent installation can be completed using the fixing components. Compared with the traditional connection method, this structure has the effect of facilitating quick docking and installation.
[0030] As a preferred technical solution of this embodiment, the docking assembly includes grooves 14 formed on the inner wall edges of the two flanges 6, and a plurality of locking members 15 are elastically connected inside the grooves 14; the locking members 15 are elastically connected to the inner wall of the grooves 14 by springs 20, so as to facilitate their retraction or ejection.
[0031] As a preferred technical solution of this embodiment, the docking assembly further includes an annular groove 16 formed on the edge of the sealing ring 12. A plurality of protrusions 17 are fixedly installed inside the annular groove 16, and locking grooves 18 that are adapted to the plurality of locking members 15 are formed on the plurality of protrusions 17. The locking grooves 18 facilitate the insertion of the locking members 15 into the locking grooves 18, thereby realizing the docking of the sealing ring 12 and the flange 6.
[0032] As a preferred technical solution of this embodiment, the inner wall of the groove 14 of the flange 6 is provided with a plurality of sliding grooves 19, and each of the plurality of sliding grooves 19 is provided with a spring 20. The plurality of springs 20 are connected to the locking member 15. The locking member 15 is elastically connected to the inner wall of the groove 14 through the springs 20, so as to facilitate its retraction or ejection.
[0033] As a preferred technical solution of this embodiment, the locking member 15 has rounded corners 21 on both sides of its edges. The rounded corners 21 are provided so that when the locking member 15 comes into contact with the protrusion 17, the protrusion 17 can push it upward into the slide groove 19 along the rounded corners 21 of the edge of the locking member 15.
[0034] As a preferred technical solution of this embodiment, the fixing component includes four lifting lugs 9 fixedly installed on the valve body 3. Each of the four lifting lugs 9 has a through hole 11. When the locking member 15 is locked and connected with the locking groove 18, the four through holes 11 are coaxially arranged with four of the flange holes 13 on the flange 6. The four lifting lugs 9, including their through holes 11, facilitate fixed installation with the flanges 6 on both sides.
[0035] As a preferred technical solution of this embodiment, the fixing component further includes a plurality of bolts 7 passing through the flange holes 13 on the two flanges 6, wherein four bolts 7 respectively pass through the through holes 11 on the four lifting lugs 9, and the ends of the plurality of bolts 7 are locked by nuts 8; the two flanges 6 and the valve body 3 can be connected through the bolts 7, and can be locked by the nuts 8, thereby achieving a fixed connection.
[0036] As a preferred technical solution in this embodiment, each bolt 7 that passes through the four through holes 11 is threaded with two locking washers 10, and the two locking washers 10 are respectively pressed against both sides of the lifting lug 9; the locking washers 10 can clamp and lock on both sides of the lifting lug 9, further realizing the stability of the fixation between the valve body 3 and the bolt 7.
[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A gas turbine pipeline anti-surge valve, comprising a valve body (3), a valve wheel (1), and a valve plate (4), wherein the valve body (3) is internally provided with the valve plate (4), characterized in that, The valve plate (4) is connected to the valve wheel (1) via the valve stem. A double-acting pneumatic cylinder (2) is provided at the top of the valve body (3). The double-acting pneumatic cylinder (2) is used to control the opening and closing of the valve plate (4) by rotating the valve wheel (1) in both directions. Sealing rings (12) are fixedly installed at both ends of the valve body (3). Pipes (5) for installation are provided on both sides of the valve body (3). Flanges (6) are welded on both pipes (5). Flange holes (13) are provided on the flanges (6). A docking assembly is provided between the flanges (6) and the sealing rings (12). The valve body (3) is connected to the flanges (6) on both sides via the docking assembly and then fixed by the fixing assembly.
2. The anti-surge valve for gas turbine pipelines according to claim 1, characterized in that, The docking assembly includes grooves (14) formed on the inner wall edges of the two flanges (6), and the interior of the grooves (14) is elastically connected with a plurality of locking elements (15).
3. The anti-surge valve for gas turbine pipelines according to claim 1, characterized in that, The docking assembly also includes an annular groove (16) formed on the edge of the sealing ring (12). A plurality of protrusions (17) are fixedly installed inside the annular groove (16), and locking grooves (18) that are adapted to the plurality of locking members (15) are formed on the plurality of protrusions (17).
4. A gas turbine pipeline anti-surge valve according to claim 2, characterized in that, The flange (6) groove (14) has multiple sliding grooves (19) on its inner wall. Each of the multiple sliding grooves (19) is provided with a spring (20), and the multiple springs (20) are connected to the locking member (15).
5. A gas turbine pipeline anti-surge valve according to claim 2, characterized in that, The locking member (15) has rounded corners (21) on both sides of its edges. The rounded corners (21) are provided so that when the locking member (15) comes into contact with the protrusion (17), the protrusion (17) can push it upward into the slide groove (19) along the rounded corners (21) of the edge of the locking member (15).
6. A gas turbine pipeline anti-surge valve according to claim 1, characterized in that, The fixing assembly includes four lifting lugs (9) fixedly installed on the valve body (3). Each of the four lifting lugs (9) has a through hole (11). When the locking member (15) is locked and connected to the locking groove (18), the four through holes (11) are coaxially arranged with four of the flange holes (13) on the flange (6).
7. A gas turbine pipeline anti-surge valve according to claim 1, characterized in that, The fixing assembly also includes a plurality of bolts (7) passing through flange holes (13) on the two flanges (6), wherein four bolts (7) pass through through holes (11) on the four lifting lugs (9), and the ends of the plurality of bolts (7) are locked by nuts (8).
8. A gas turbine pipeline anti-surge valve according to claim 7, characterized in that, Each bolt (7) that passes through the four through holes (11) has two locking washers (10) threaded on it, and the two locking washers (10) are respectively pressed against the two sides of the lifting lug (9).