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CN-122014369-A - Anti-deformation tool for installation and adjustment of low-pressure inner cylinder sealing ring of steam turbine

CN122014369ACN 122014369 ACN122014369 ACN 122014369ACN-122014369-A

Abstract

The invention discloses an anti-deformation tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine, which relates to the technical field of anti-deformation tools, is mounted on an inner cylinder part and comprises an integrated shell, a connecting screw and a detection unit, wherein the integrated shell is arranged on the inner cylinder part, the connecting screw thread is installed in the tip of integrated casing, has offered the screw groove on the interior jar spare, and the one end and the inner chamber threaded connection of screw groove of connecting screw outer wall, detecting element set up in the inside of integrated casing, and detecting element is used for carrying out state detection to interior jar spare. According to the invention, the inner cylinder part, the integrated shell and the connecting screw rod are matched for use, and the connecting screw rods at the two ends of the integrated shell are in threaded connection with the inner cylinder part, so that the integrated shell and the two connecting screw rods can support the weak part of the inner cylinder part, the stability of the shape of the inner cylinder part is ensured when the steel part of the inner cylinder part is processed, the processing deformation caused by the release of processing stress can be effectively prevented, and the product quality is improved.

Inventors

  • ZHANG YANG
  • JIANG XUE
  • ZHAO ZIHAO

Assignees

  • 宜昌船舶柴油机有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (10)

  1. 1. The deformation-preventing tool for mounting and adjusting the low-pressure inner cylinder sealing ring of the steam turbine is mounted on an inner cylinder (1), and is characterized by comprising the following components: An integrated housing (2), the integrated housing (2) being arranged on the inner cylinder part (1); the connecting screw rod (3), the connecting screw rod (3) is arranged at the end part of the integrated shell (2) in a threaded manner, a threaded groove is formed in the inner cylinder part (1), and one end of the outer wall of the connecting screw rod (3) is in threaded connection with the inner cavity of the threaded groove; the detection unit (4), the detection unit (4) is arranged in the integrated shell (2), and the detection unit (4) is used for detecting the state of the inner cylinder part (1).
  2. 2. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 1, further comprising: the first locking nut (5) is in threaded sleeve connection with the outside of the connecting screw rod (3), and the first locking nut (5) is in extrusion fit with the end part of the integrated shell (2); the second locking nut (6), second locking nut (6) screw thread cup joints in the outside of connecting screw rod (3), second locking nut (6) is laminated mutually with the inner wall extrusion of interior cylinder (1), plane breach has been seted up to the tip of connecting screw rod (3) outer wall.
  3. 3. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 1, wherein the integrated shell (2) comprises: a first housing (21) and a second housing (22), the first housing (21) and the second housing (22) being symmetrically arranged; The threaded hole (25), the one end that is opposite to each other is offered in first casing (21) and second casing (22) respectively to threaded hole (25), the other end and the threaded hole (25) screw thread socket joint of connecting screw rod (3) outer wall.
  4. 4. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 3, wherein the integrated shell (2) comprises: a fixing plate (23), wherein the fixing plate (23) is arranged at the side of the first shell (21) and the second shell (22); The fixing bolt (24) is arranged on one side of the fixing plate (23), and the outer wall of the fixing bolt (24) is respectively in threaded connection with the first shell (21) and the second shell (22); And one side of the limiting plate (26) is fixedly connected with the inner walls of the first shell (21) and the second shell (22) respectively, and the limiting plate (26) is used for limiting the detection unit (4).
  5. 5. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 4, wherein the detecting unit (4) comprises: The detection probe rod (41) is characterized in that a connecting hole is formed in the end part of the connecting screw rod (3), the outer wall of the detection probe rod (41) is in sliding sleeve joint with the inner cavity of the connecting hole, and the end part of the detection probe rod (41) is attached to the inner wall of the thread groove; the connecting plate (42), connecting plate (42) sliding arrangement is in the inside of integrated casing (2), the other end and connecting plate (42) fixed connection of detection probe rod (41).
  6. 6. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 5, wherein the detecting unit (4) further comprises: A detection terminal (43), wherein the detection terminal (43) is arranged inside the integrated shell (2); and the pressure sensor (44) is arranged on the detection terminal (43), and the pressure sensor (44) is used for detecting the extrusion force on the detection probe rod (41).
  7. 7. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 6, wherein the detecting unit (4) further comprises: the first mounting plate (45), the first mounting plate (45) is slidably mounted in the integrated shell (2), and the detection terminal (43) is fixedly mounted on the top of the first mounting plate (45); A second mounting plate (46), wherein the second mounting plate (46) is slidably mounted inside the integrated housing (2), and the second mounting plate (46) is positioned on one side of the pressure sensor (44) away from the detection terminal (43); the limiting spring (48), limiting spring (48) sets up in the inside of integrated casing (2), the one end of limiting spring (48) is laminated mutually with connecting plate (42) extrusion, limiting spring (48) are located one side that first mounting panel (45) and second mounting panel (46) are on the back mutually.
  8. 8. The deformation-preventing tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine according to claim 7, wherein the detecting unit (4) further comprises: the guide rod (47) is arranged in the integrated shell (2), through holes are formed in the connecting plate (42), the first mounting plate (45) and the second mounting plate (46), and the outer wall of the guide rod (47) is in sliding sleeve joint with the through holes; The limiting sleeve ring (49), limiting sleeve ring (49) fixed connection is in the inside of integrated casing (2), the tip and the limiting sleeve ring (49) slip of guide bar (47) cup joint.
  9. 9. The deformation-preventing tool for mounting and adjusting the sealing ring of the low-pressure inner cylinder of the steam turbine, as set forth in claim 8, is characterized in that the use method of the deformation-preventing tool comprises the following steps: The first step is that the connecting screw rod (3) is rotated to move towards the inside of the integrated shell (2), so that the distance between the opposite ends of the connecting screw rods (3) at the two ends of the integrated shell (2) is smaller than the width of the supporting installation position of the inner cylinder (1), then the connecting screw rod (3) at the end of the integrated shell (2) is in threaded connection with a thread groove on the inner cylinder (1), and the connecting screw rod (3) is locked and limited by using a first locking nut (5) and a second locking nut (6); Step two, the integrated shell (2) and the connecting screw (3) support and limit the inner cylinder (1), and when the inner cylinder (1) is processed, the detecting unit (4) detects the state of the inner cylinder (1) in real time; And thirdly, loosening the first locking nut (5) and the second locking nut (6) after the inner cylinder part (1) is machined, separating the connecting screw rod (3) from the inner cylinder part (1), and detaching the integrated shell (2) and the connecting screw rod (3).
  10. 10. The deformation-preventing tool for mounting and adjusting the sealing ring of the low-pressure inner cylinder of the steam turbine according to claim 9, wherein the real-time detection of the state of the inner cylinder (1) by the detection unit (4) in the second step comprises the following steps: S2.1, after the integrated shell (2) and the connecting screw (3) are installed on the inner cylinder (1), the end part of the detection probe rod (41) is extruded and attached to the inner wall of a thread groove on the inner cylinder (1), the limit spring (48) acts on the detection probe rod (41) through the connecting plate (42) to detect a elastic extrusion force, and the pressure sensor (44) detects the elastic extrusion force on the limit spring (48) through the first mounting plate (45) and the second mounting plate (46); S2.2, analyzing whether the inner cylinder (1) deforms or not by judging whether the pressure sensor (44) detects the change of the numerical value, namely, setting the numerical value detected by the pressure sensor (44) as a standard value when the inner cylinder (1) is in a static state, setting a standard error again, and judging whether the change of the numerical value detected by the pressure sensor (44) is within the standard error or not to obtain whether the inner cylinder (1) deforms and is damaged, namely, if the change of the numerical value detected by the pressure sensor (44) is within the standard error, the inner cylinder (1) does not deform and is damaged, otherwise, if the change of the numerical value detected by the pressure sensor (44) is not within the standard error, the inner cylinder (1) deforms and is damaged.

Description

Anti-deformation tool for installation and adjustment of low-pressure inner cylinder sealing ring of steam turbine Technical Field The invention relates to the technical field of anti-deformation tools, in particular to an anti-deformation tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine. Background The low-pressure inner cylinder is used as an important stator component of the low-pressure module of the steam turbine, so that the support and positioning of low-pressure blades of each stage are required to be met, the continuous energy conversion is ensured, the safe, stable and efficient operation is required in the whole life cycle, and the practical conditions of high temperature and high pressure of gas entering the exhaust cylinder, high impact stress formed by the gas flowing through the body and the like occur. The low-pressure inner cylinder sealing ring bearing structure design and the air tightness design have quite high requirements, particularly, the manufacturing difficulty is quite high in the aspects of controlling welding deformation, controlling the size of a thin-wall part with poor rigidity and the like, the low-pressure inner cylinder sealing ring bearing structure is used as an inner core part, on the premise of guaranteeing the welding deformation and controlling the size precision, whether the sealing ring can be accurately installed is a great challenge, and the sealing ring is only supported by one lifting part because of the outside, welding and processing procedures are needed in the manufacturing process, and the deformation is unavoidable under the condition of weak rigidity of less product support. Therefore, the deformation-preventing tool for installing and adjusting the sealing ring of the low-pressure inner cylinder of the steam turbine is designed to solve or relieve the problems. Disclosure of Invention The invention aims to provide an anti-deformation tool for mounting and adjusting a sealing ring of a low-pressure inner cylinder of a steam turbine, so as to solve the problems in the prior art. In order to achieve the purpose, the invention provides the technical scheme that the anti-deformation tool for mounting and adjusting the sealing ring of the low-pressure inner cylinder of the steam turbine is mounted on an inner cylinder piece and comprises the following components: the integrated shell is arranged on the inner cylinder part; the connecting screw is arranged at the end part of the integrated shell in a threaded manner, a threaded groove is formed in the inner cylinder part, and one end of the outer wall of the connecting screw is in threaded connection with the inner cavity of the threaded groove; The detection unit is arranged in the integrated shell and is used for detecting the state of the inner cylinder. Preferably, the method further comprises: the first locking nut is in threaded sleeve joint with the outside of the connecting screw rod, and is extruded and attached to the end part of the integrated shell; The second locking nut is in threaded sleeve connection with the outside of the connecting screw rod, the second locking nut is in extrusion fit with the inner wall of the inner cylinder piece, and a plane notch is formed in the end part of the outer wall of the connecting screw rod. Preferably, the integrated housing comprises: The first shell and the second shell are symmetrically arranged; The threaded hole is formed in one end, opposite to the other end, of the first shell and the second shell respectively, and the other end of the outer wall of the connecting screw is in threaded sleeve joint with the threaded hole. Preferably, the integrated housing comprises: The fixing plate is arranged on the side of the first shell and the side of the second shell; The fixing bolt is arranged on one side of the fixing plate, and the outer wall of the fixing bolt is respectively in threaded connection with the first shell and the second shell; And one side of the limiting plate is fixedly connected with the inner walls of the first shell and the second shell respectively, and the limiting plate is used for limiting the detection unit. Preferably, the detection unit includes: The detection probe rod is characterized in that a connecting hole is formed in the end part of the connecting screw rod, the outer wall of the detection probe rod is in sliding sleeve joint with the inner cavity of the connecting hole, and the end part of the detection probe rod is attached to the inner wall of the thread groove; The connecting plate is arranged in the integrated shell in a sliding manner, and the other end of the detection probe rod is fixedly connected with the connecting plate. Preferably, the detection unit further includes: the detection terminal is arranged in the integrated shell; the pressure sensor is arranged on the detection terminal and is used for detecting the extrusion force on the detection probe. Preferably