Anti-oxidation device

Abstract

The invention relates to the technical field of steam seal rings, and discloses an anti-oxidation device which comprises a steam seal part, an anti-oxidation part and an anti-oxidation part, the steam seal part comprises a steam seal body, a steam seal groove is formed in the steam seal body, and a steam seal ring body is arranged in the steam seal groove; the receding part is arranged on the steam seal ring body; the anti-oxidation part comprises a trigger piece arranged on the receding part, a plurality of anti-oxidation pieces are arranged in the steam seal groove, and a supply piece is arranged on the multiple anti-oxidation pieces jointly; the steam seal ring body stretches out and draws back in the steam seal groove through the receding part, the trigger part stretches out and draws back along with the receding part, and the supply part supplies anti-oxidation liquid to the anti-oxidation part through the trigger part. Anti-oxidation liquid is sprayed to the steam seal ring body and the steam seal groove through the anti-oxidation piece to form an anti-oxidation coating; the steam seal ring body can be prevented from being oxidized to generate oxide skin, flexible retreating and rebounding of the steam seal ring body are achieved, good sealing performance is maintained, and the running stability and efficiency of a steam turbine are guaranteed.

Description

Technical Field

[0001] The invention relates to the field of steam seal rings, in particular to an anti-oxidation device. Background Art

[0002] At present, in the steam turbine sealing system, the steam seal ring at the turbine bridge steam seal is a key component of the steam turbine sealing system, which is mainly used to reduce steam leakage, maintain internal pressure distribution and improve thermal efficiency. However, when inspecting the steam seal ring at the turbine bridge steam seal, it was found that the steam seal ring produced a large amount of oxide scale due to oxidation and accumulated in the steam seal groove. This situation seriously affected the normal function of the steam seal ring, making it unable to flexibly retreat and rebound, resulting in an increase in the steam seal gap between the steam seal ring and the turbine, destroying the sealing performance, increasing the risk of steam leakage, and affecting the stability and efficiency of the turbine operation. Summary of the Invention

[0003] In view of the above problems in the prior art, the present invention is proposed.

[0004] The above technical problems are solved by the following technical solutions: The present invention proposes an anti-oxidation device, which includes a steam sealing part, which includes a steam sealing body, a steam sealing groove is provided on the steam sealing body, and a steam sealing ring is provided in the steam sealing groove; a retreat part, which is provided on the steam sealing ring; an anti-oxidation part, which includes a triggering part provided on the retreat part, a plurality of anti-oxidation parts are provided in the steam sealing groove, and a supply part is commonly provided on the plurality of anti-oxidation parts; wherein, the steam sealing ring body is extended and retracted in the steam sealing groove through the retreat part, the triggering part is extended and retracted along with the retreat part, and the supply part supplies anti-oxidation liquid to the anti-oxidation part through the triggering part, and the anti-oxidation liquid is sprayed onto the steam sealing ring body and the steam sealing groove through the anti-oxidation part to form an anti-oxidation coating to prevent the formation of oxide scale on the steam sealing ring body.

[0005] In a preferred embodiment of the anti-oxidation device of the present invention: the retreat portion includes a retreat member provided on the steam seal ring body, the retreat member includes a retreat groove provided on the steam seal ring body, a fixing plate is provided in the retreat groove, a retreat spring is provided on the fixing plate, and a protective plate is provided on the retreat spring.

[0006] In a preferred embodiment of the anti-oxidation device of the present invention: the retreat portion also includes a connecting member provided on the retreat member, the connecting member includes a connecting plate provided on the protective plate, a connecting column is provided on the connecting plate, a fixing column is provided on the fixing plate, and a telescopic groove is provided on the fixing column.

[0007] In a preferred embodiment of the anti-oxidation device of the present invention: the trigger member includes a connecting groove provided on the connecting column, a first groove is provided in the connecting groove, a first spring is provided in the first groove, a trigger seat is provided on the first spring, and a trigger switch is provided in the first groove.

[0008] In a preferred embodiment of the anti-oxidation device of the present invention: the trigger member also includes an extrusion member arranged in the telescopic groove, the extrusion member includes a movable groove arranged in the telescopic groove, a second spring is provided in the movable groove, the second spring is provided with an extrusion block, and the extrusion block is provided with a first inclined surface, a second inclined surface and a third inclined surface.

[0009] In a preferred embodiment of the anti-oxidation device of the present invention: the anti-oxidation component includes a second groove arranged in the steam seal groove, a third groove is arranged in the steam seal groove, a spray pipe is arranged in the second groove, and an atomizing nozzle is arranged on the spray pipe.

[0010] In a preferred embodiment of the anti-oxidation device of the present invention: it also includes a conveying part arranged in the steam seal body, the conveying part includes a through groove arranged in the steam seal body, a sealing gasket is provided in the through groove, a connecting pipe is provided in the sealing gasket, a hose is provided on the connecting pipe, a fourth groove is provided in the through groove, and a conveying pipe is provided in the fourth groove.

[0011] In a preferred embodiment of the anti-oxidation device of the present invention: it also includes a liquid storage component, the liquid storage component includes a liquid storage tank, the liquid storage tank is provided with a liquid inlet, the liquid inlet is provided with a sealing cover, and the liquid storage tank is provided with an observation window.

[0012] In a preferred embodiment of the anti-oxidation device of the present invention: the supply member includes a supply pipe provided on a hose, the liquid storage tank is provided with a water pump, and the water pump is provided with a liquid extraction pipe.

[0013] In a preferred embodiment of the anti-oxidation device of the present invention: the supply pipe is fixedly connected to the water pump, and the liquid extraction pipe is connected to the liquid storage tank.

[0014] The beneficial effects of the present invention are: by arranging the retreat portion and the anti-oxidation portion, the anti-oxidation liquid can be sprayed into the steam seal groove and on the steam seal ring to form an anti-oxidation coating, thereby avoiding oxidation of the steam seal ring to produce oxide scale, and effectively preventing the steam seal ring from being unable to retreat and rebound normally or becoming stuck due to accumulation of oxide scale, thereby achieving flexible retreat and rebound of the steam seal ring, ensuring that the steam seal ring and the turbine rotor maintain a minimum steam seal gap seal, maintaining good sealing performance, and ensuring the stability and efficiency of the turbine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0016] Figure 1 shows the overall schematic diagram of the anti-oxidation device;

[0017] Figure 2 shows the overall schematic diagram of the anti-oxidation device;

[0018] Figure 3 shows a cross-sectional view of an anti-oxidation device;

[0019] Figure 4 Shown Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 Shows the overall schematic diagram of the steam seal ring of the anti-oxidation device;

[0021] Figure 6 shows a cross-sectional view of an anti-oxidation device;

[0022] Figure 7 Shown Figure 6 Enlarged view of point B in the middle;

[0023] Figure 8 Shows the overall schematic diagram of the retreat portion of the anti-oxidation device;

[0024] Figure 9 A partial structural connection diagram of the anti-oxidation device is shown;

[0025] Figure 10 Shows an overall schematic diagram of the extruded parts of the anti-oxidation device. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0027] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0028] Example 1

[0029] Reference Figure 1-Figure 2The present embodiment provides an anti-oxidation device, comprising a steam sealing portion 1, which includes a steam sealing body 11, a steam sealing groove 12 provided on the steam sealing body 11, and a steam sealing ring body 13 provided in the steam sealing groove 12; a retreat portion 2, which is provided on the steam sealing ring body 13; an anti-oxidation portion 3, which includes a triggering member 31 provided on the retreat portion 2, a plurality of anti-oxidation members 32 provided in the steam sealing groove 12, and a supplying member 33 provided on the plurality of anti-oxidation members 32; wherein the steam sealing ring body 13 is extended and retracted in the steam sealing groove 12 through the retreat portion 2, the triggering member 31 is extended and retracted along with the retreat portion 2, and the supplying member 33 supplies anti-oxidation liquid to the anti-oxidation member 32 through the triggering member 31, and the anti-oxidation liquid is sprayed onto the steam sealing ring body 13 and the steam sealing groove 12 through the anti-oxidation member 32 to form an anti-oxidation coating, thereby preventing the formation of oxide scale on the steam sealing ring body 13;

[0030] Specifically, the steam seal ring body 13 is arranged in an arc shape, and four steam seal ring bodies 13 can form a ring, and the plurality of anti-oxidation parts 32 are distributed in a ring array;

[0031] When in use, the steam seal ring 13 retreats and rebounds in the steam seal groove 12 through the retreat portion 2, avoiding direct contact between the steam seal teeth on the steam seal ring 13 and the turbine rotor to form a large friction force, preventing component wear, and at the same time ensuring that the steam seal ring 13 and the turbine rotor maintain a minimum steam seal gap seal to maintain good sealing performance. When the steam seal ring 13 retreats due to factors such as thermal expansion or mechanical vibration, the trigger member 31 moves with the retreat portion 2, prompting the supply member 33 to provide anti-oxidation liquid to the anti-oxidation member 32. The anti-oxidation liquid is sprayed onto the steam seal ring 13 and the steam seal groove 12 through the anti-oxidation member 32 to form an anti-oxidation coating, avoiding oxidation of the steam seal ring 13 to produce oxide scale, and effectively preventing the steam seal ring 13 from being unable to retreat and rebound normally or getting stuck due to the accumulation of oxide scale, thereby ensuring the stability and efficiency of the steam turbine operation.

[0032] Example 2

[0033] Reference Figures 1-8 This embodiment is different from the first embodiment in that the retreat portion 2 includes a retreat member 21 provided on the steam seal ring body 13, the retreat member 21 includes a retreat groove 211 provided on the steam seal ring body 13, a fixing plate 212 is provided in the retreat groove 211, a retreat spring 213 is provided on the fixing plate 212, and a protective plate 214 is provided on the retreat spring 213;

[0034] Specifically, three retreat members 21 are provided, and the three retreat members 21 are equidistantly distributed. The fixing plate 212 is fixedly connected to the steam seal ring body 13 by bolts, so that the retreat spring 213 is detachably connected to the steam seal ring body 13, so that after a period of use, the retreat spring 213 can be replaced according to actual conditions, ensuring that the system can be maintained in time according to actual use conditions, thereby maintaining optimal performance. The fixing plate 212 is fixedly connected to the retreat spring 213, and the protective plate 214 is fixedly connected to the retreat spring 213. The protective plate 214 contacts the inner wall of the steam seal groove 12, so that when the steam seal ring body 13 retreats and squeezes the retreat spring 213, the protective plate 214 can buffer the force of the retreat spring 213, thereby preventing the force of the retreat spring 213 from directly acting on the steam seal groove 12, and preventing the steam seal groove 12 from being damaged due to excessive stress.

[0035] The anti-oxidation member 32 includes a second groove 321 disposed in the steam seal groove 12, a third groove 322 disposed in the steam seal groove 12, a spray pipe 323 disposed in the second groove 321, and an atomizing nozzle 324 disposed on the spray pipe 323;

[0036] Specifically, there are two third grooves 322, and the two third grooves 322 are symmetrically arranged. The spray pipe 323 is placed in the second groove 321 and the two third grooves 322. Figure 7 The spray pipe 323 is configured in a special shape, and a plurality of atomizing nozzles 324 are provided, and the plurality of atomizing nozzles 324 are evenly distributed on the special-shaped spray pipe 323. The plurality of atomizing nozzles 324 and the special-shaped spray pipe 323 enable the anti-oxidation liquid to be evenly distributed on the a surface, b surface, c surface, and d surface of the steam seal ring 13, effectively forming an anti-oxidation coating on the steam seal ring 13, and preventing the steam seal ring 13 from oxidizing and forming oxide scale;

[0037] The steam seal body 11 further includes a conveying member 34, which includes a through groove 341 provided in the steam seal body 11, a sealing gasket 342 provided in the through groove 341, a connecting pipe 343 provided in the sealing gasket 342, a hose 344 provided on the connecting pipe 343, a fourth groove 345 provided in the through groove 341, and a conveying pipe 346 provided in the fourth groove 345;

[0038] Specifically, the sealing gasket 342 is annularly arranged, the inner side wall of the sealing gasket 342 is in close contact with the connecting pipe 343, the sealing gasket 342 is in close contact with the inner side wall of the through groove 341, the connecting pipe 343 is fixedly connected to the hose 344, the connecting pipe 343 is in communication with the hose 344, the fourth groove 345 is in communication with the plurality of second grooves 321, the fourth groove 345 is arc-shaped, the fourth groove 345 is in communication with the through groove 341, the delivery pipe 346 is fixedly connected to the connecting pipe 343, the delivery pipe 346 is in communication with the connecting pipe 343, the delivery pipe 346 is fixedly connected to the plurality of spray pipes 323, and the delivery pipe 346 is in communication with the plurality of spray pipes 323;

[0039] The liquid storage part 4 includes a liquid storage tank 41, a liquid inlet 42 is provided on the liquid storage tank 41, a sealing cover 43 is provided on the liquid inlet 42, and an observation window 44 is provided on the liquid storage tank 41;

[0040] Specifically, the liquid inlet 42 is fixedly connected to the liquid storage tank 41, the liquid inlet 42 is communicated with the liquid storage tank 41, the sealing cover 43 is threadedly connected to the liquid inlet 42, and the anti-oxidation liquid in the liquid storage tank 41 can be observed through the observation window 44;

[0041] The supply member 33 includes a supply pipe 331 provided on a hose 344, a water pump 332 provided on the liquid storage tank 41, and a liquid extraction pipe 333 provided on the water pump 332; the supply pipe 331 is fixedly connected to the water pump 332, and the liquid extraction pipe 333 is communicated with the liquid storage tank 41;

[0042] Specifically, the supply pipe 331 is fixedly connected to the hose 344 , the supply pipe 331 is in communication with the hose 344 , the water pump 332 is fixedly connected to the liquid extraction pipe 333 , and the water pump 332 is fixedly mounted on the liquid storage tank 41 ;

[0043] During use, when the steam seal ring 13 yields due to factors such as thermal expansion or mechanical vibration, the yield spring 213 is compressed and deformed to generate a reaction force. At this time, the water pump 332 is started, so that the liquid extraction pipe 333 transports the anti-oxidation liquid in the liquid storage tank 41 to the supply pipe 331. The supply pipe 331 transports the anti-oxidation liquid through the hose 344 and the connecting pipe 343 to the spray pipe 323 and the atomizing nozzle 324, and sprays it out through the atomizing nozzle 324, so that the anti-oxidation liquid is evenly sprayed through multiple atomizing nozzles 324. On the steam seal groove 12 and the steam seal ring 13, the anti-oxidation liquid forms an anti-oxidation coating on the steam seal groove 12 and the steam seal ring 13, thereby preventing the steam seal ring 13 from oxidizing and producing oxide scale, and effectively preventing the steam seal ring 13 from being unable to retreat and rebound normally or becoming stuck due to the accumulation of oxide scale, thereby ensuring the stability and efficiency of the steam turbine operation. Afterwards, the steam seal ring 13 is reset and rebounded under the action of the retreat spring 213, ensuring that the steam seal ring 13 and the steam turbine rotor maintain a minimum steam seal gap and good sealing performance;

[0044] Example 3

[0045] Referring to Figures 5-10 , what is different from the first embodiment in this embodiment is that the retracting portion 2 further includes a connecting member 22 provided on the retracting member 21. The connecting member 22 includes a connecting plate 221 provided on the protective plate 214. A connecting column 222 is provided on the connecting plate 221, a fixing column 223 is provided on the fixing plate 212, and a telescopic groove 224 is provided on the fixing column 223;

[0046] Specifically, the connecting member 22 is provided on one of the retracting members 21. The connecting plate 221 is fixedly connected to the inner side wall of the protective plate 214. The connecting plate 221 is fixedly connected to the connecting column 222. The fixing plate 212 is fixedly connected to the fixing column 223. The connecting column 222 is slidably connected to the fixing column 223 through the telescopic groove 224;

[0047] The triggering member 31 includes a connecting groove 311 provided on the connecting column 222. A first groove 312 is provided in the connecting groove 311. A first spring 313 is provided in the first groove 312. A triggering seat 314 is provided on the first spring 313. A trigger switch 315 is provided in the first groove 312;

[0048] Specifically, the first spring 313 is fixedly connected to the bottom wall of the first groove 312. The triggering seat 314 is fixedly connected to the first spring 313. The triggering seat 314 is slidably connected to the first groove 312. The trigger switch 315 is fixedly connected to the bottom wall of the first groove 312. The trigger switch 315 is located inside the first spring 313;

[0049] The triggering member 31 further includes an extrusion member 316 provided in the telescopic groove 224. The extrusion member 316 includes a movable groove 3161 provided in the telescopic groove 224. A second spring 3162 is provided in the movable groove 3161. An extrusion block 3163 is provided on the second spring 3162. A first inclined surface 3164, a second inclined surface 3165 and a third inclined surface 3166 are provided on the extrusion block 3163;

[0050] Specifically, a plurality of extrusion members 316 are provided, and the plurality of extrusion members 316 are symmetrically and equidistantly distributed in pairs. The movable groove 3161 is arranged in a "C" shape. The second spring 3162 is fixedly connected to the inner side wall of the movable groove 3161. The second spring 3162 is fixedly connected to the extrusion block 3163. The extrusion block 3163 is slidably connected to the movable groove 3161;

[0051] When in use, in conjunction with Example 2, when the steam seal ring 13 retreats and squeezes the retreat spring 213, the fixed column 223 moves toward the connecting column 222, so that the connecting column 222 drives the trigger seat 314 to slide into the telescopic groove 224. Due to the limiting effect of the extrusion block 3163 and the pushing effect of the connecting column 222 continuing to move, the trigger seat 314 and the connecting column 222 are pushed together by the first groove 312, so that the trigger seat 314 contacts the trigger switch 315, so that the water pump 332 is triggered and started. At the same time, the connecting column 222 gradually contacts the third inclined surface 3166 of the extrusion block 3163. Contact and apply extrusion force to the extrusion block 3163, so that the extrusion block 3163 moves into the movable groove 3161 under the action of the third inclined surface 3166, and releases the restriction of the extrusion block 3163 on the trigger seat 314. After losing the restriction, the trigger seat 314 resets under the action of the second spring 3162, prompting the water pump 332 to close. Afterwards, the connecting column 222 continues to move into the telescopic groove 224. The cooperation of multiple extrusion parts 316 with the trigger part 31 and the connecting column 222 enables the water pump 332 to be started intermittently, realizing intermittent spraying of the anti-oxidation liquid, avoiding the waste of anti-oxidation liquid caused by continuous spraying of the steam seal ring 13 when retreating.

[0052] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. An anti-oxidation device, characterized in that: include, The steam seal portion (1) comprises a steam seal body (11), wherein the steam seal body (11) is provided with a steam seal groove (12), and a steam seal ring body (13) is provided in the steam seal groove (12); A retreat portion (2) is provided on the steam seal ring body (13); The anti-oxidation portion (3) includes a triggering member (31) provided on the retreating portion (2), a plurality of anti-oxidation members (32) are provided in the steam seal groove (12), and a supply member (33) is commonly provided on the plurality of anti-oxidation members (32); The steam seal ring (13) is extended and retracted in the steam seal groove (12) through the retreat portion (2), the trigger member (31) is extended and retracted along with the retreat portion (2), the supply member (33) supplies the anti-oxidation liquid to the anti-oxidation member (32) through the trigger member (31), and the anti-oxidation liquid is sprayed onto the steam seal ring (13) and the steam seal groove (12) through the anti-oxidation member (32) to form an anti-oxidation coating, thereby preventing the formation of oxide scale on the steam seal ring (13).

2. The anti-oxidation device according to claim 1, characterized in that: The retreat portion (2) includes a retreat member (21) provided on the steam seal ring body (13), the retreat member (21) includes a retreat groove (211) provided on the steam seal ring body (13), a fixing plate (212) is provided in the retreat groove (211), a retreat spring (213) is provided on the fixing plate (212), and a protective plate (214) is provided on the retreat spring (213).

3. The anti-oxidation device according to claim 2, characterized in that: The retreat portion (2) further comprises a connecting member (22) provided on the retreat member (21), the connecting member (22) comprising a connecting plate (221) provided on the protective plate (214), a connecting column (222) being provided on the connecting plate (221), a fixing column (223) being provided on the fixing plate (212), and a telescopic slot (224) being provided on the fixing column (223).

4. The anti-oxidation device according to claim 3, characterized in that: The trigger member (31) comprises a connecting groove (311) provided on the connecting column (222), a first groove (312) being provided in the connecting groove (311), a first spring (313) being provided in the first groove (312), a trigger seat (314) being provided on the first spring (313), and a trigger switch (315) being provided in the first groove (312).

5. The anti-oxidation device according to claim 4, characterized in that: The trigger member (31) further includes an extrusion member (316) disposed in the telescopic slot (224), the extrusion member (316) including a movable slot (3161) disposed in the telescopic slot (224), a second spring (3162) disposed in the movable slot (3161), an extrusion block (3163) disposed on the second spring (3162), and a first inclined surface (3164), a second inclined surface (3165), and a third inclined surface (3166) disposed on the extrusion block (3163).

6. The anti-oxidation device according to claim 5, characterized in that: The anti-oxidation component (32) comprises a second groove (321) provided in the steam seal groove (12), a third groove (322) is provided in the steam seal groove (12), a spray pipe (323) is provided in the second groove (321), and an atomizing nozzle (324) is provided on the spray pipe (323).

7. The anti-oxidation device according to claim 6, characterized in that: The invention also includes a conveying member (34) provided in the steam seal body (11), wherein the conveying member (34) includes a through groove (341) provided in the steam seal body (11), a sealing gasket (342) provided in the through groove (341), a connecting pipe (343) provided in the sealing gasket (342), a hose (344) provided on the connecting pipe (343), a fourth groove (345) provided in the through groove (341), and a conveying pipe (346) provided in the fourth groove (345).

8. The anti-oxidation device according to claim 7, characterized in that: The device further comprises a liquid storage component (4), wherein the liquid storage component (4) comprises a liquid storage box (41), a liquid inlet (42) is provided on the liquid storage box (41), a sealing cover (43) is provided on the liquid inlet (42), and an observation window (44) is provided on the liquid storage box (41).

9. The anti-oxidation device according to claim 8, characterized in that: The supply member (33) includes a supply pipe (331) provided on a hose (344); a water pump (332) is provided on the liquid storage tank (41); and a liquid extraction pipe (333) is provided on the water pump (332).

10. The anti-oxidation device according to claim 9, characterized in that: The supply pipe (331) is fixedly connected to the water pump (332), and the liquid extraction pipe (333) is communicated with the liquid storage tank (41).

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