CN-224209637-U - Grinding device for valve disc and diffusion steam nozzle of steam turbine

CN224209637UCN 224209637 UCN224209637 UCN 224209637UCN-224209637-U

Abstract

The utility model belongs to the technical field of turbine assembly, and particularly discloses a grinding device for a valve disc and a diffusion steam nozzle of a turbine, which comprises a positioning plate, a guide sleeve, a grinding rod, a handle, the valve disc and the diffusion steam nozzle, wherein the positioning plate is arranged on the end face of a steam chamber of the turbine through bolts, the guide sleeve is arranged in a guide sleeve mounting hole of the positioning plate, and the axis of the guide sleeve is vertical to the end face of the positioning plate; the device has the advantages of simple structure, convenient disassembly and assembly, quick and accurate realization of the grinding effect between the valve disc and the diffusion steam nozzle, improvement of the production efficiency, reduction of the labor intensity of workers and guarantee of smooth production flow.

Inventors

LIU BIN
LI FEIFEI
LV JIE
SU RUIRUI
LI SENLIN
HUANG ZHAOJUN
ZHU SHUGUANG
FENG SHULIN

Assignees

中信重工机械股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250526

Claims (5)

1. A grinding device for a valve disc and a diffusion steam nozzle of a steam turbine comprises a positioning plate (1), a guide sleeve (2), a grinding rod (3), a handle (4), a valve disc (6) and the diffusion steam nozzle (7), and is characterized in that the positioning plate (1) is arranged on the end face of a steam chamber of the steam turbine through a bolt (5), the guide sleeve (2) is arranged in a guide sleeve mounting hole (11) of the positioning plate (1), the axis of the guide sleeve (2) is perpendicular to the end face of the positioning plate (1), the grinding rod (3) is inserted into a central hole (21) of the guide sleeve (2), the grinding rod (3) is coaxial with the guide sleeve (2), the handle (4) is arranged at one end of the grinding rod (3), the other end of the grinding rod (3) is connected with the valve disc (6), and the other end of the valve disc (6) is in contact with the diffusion steam nozzle (7).
2. The grinding device for the valve disc and the diffusion steam nozzle of the steam turbine is characterized in that the positioning plate (1) is a rectangular flat plate, a guide sleeve mounting hole (11) is formed in the center of the end face of the positioning plate (1), the guide sleeve mounting hole (11) is a step hole, a bolt hole (12) is formed in the outer side of the guide sleeve mounting hole (11), and the bolt hole (12) is a waist-shaped long hole.
3. The grinding device for the valve disc and the diffusion steam nozzle of the steam turbine is characterized in that the guide sleeve (2) is a round tube, a central hole (21) of the guide sleeve (2) is matched with the grinding rod (3), and the outer wall (22) of the guide sleeve (2) is matched with the guide sleeve mounting hole (11).
4. The grinding device for the valve disc and the diffusion steam nozzle of the steam turbine is characterized in that a first step shaft (31), a second step shaft (32) and a third step shaft (33) are sequentially arranged on the grinding rod (3) from left to right, the outer diameters of the first step shaft (31) and the third step shaft (33) are smaller than the outer diameter of the second step shaft (32), a handle mounting hole (34) for inserting a handle (4) is formed in the left end of the first step shaft (31), the outer diameter of the second step shaft (32) is matched with a central hole (21) of a guide sleeve (2), a threaded hole (35) is formed in the right end face of the third step shaft (33), and one end of the valve disc (6) is mounted in the threaded hole (35).
5. A grinding device for a valve disc and a diffusion nozzle of a steam turbine according to claim 1, wherein the diameter of the guide sleeve mounting hole (11) is larger than the outer diameter of the valve disc (6).

Description

Grinding device for valve disc and diffusion steam nozzle of steam turbine Technical Field The utility model belongs to the technical field of turbine assembly, and particularly relates to a grinding device for a valve disc and a diffusion steam nozzle of a turbine. Background In the assembly of the steam turbine adjusting steam valve connecting rod, a valve disc for controlling the quantity of steam inflow and a diffusion steam nozzle need to be ground simultaneously during the assembly, and the contact belt width is kept to be 1-2mm, and the smoothness Ra0.8 is kept. This assembly requirement is critical to the overall operation of the turbine, so that a tight fit is necessary. The method used in the current assembly is that a bench worker holds the valve disc and directly grinds on the diffusion steam nozzle, when the valve disc and the diffusion steam nozzle are required to be in the optimal position in the grinding process, due to the difference of technical levels, how the perpendicularity is maintained directly leads to the unstable grinding effect, and the grinding process needs repeated adjustment, so that the time and the labor are consumed. Disclosure of utility model Aiming at the problems in the background technology, the utility model provides a grinding device for a valve disc and a diffusion steam nozzle of a steam turbine. The grinding device for the valve disc and the diffusion steam nozzle of the steam turbine comprises a positioning plate, a guide sleeve, a grinding rod, a handle, the valve disc and the diffusion steam nozzle, wherein the positioning plate is arranged on the end face of a steam chamber of the steam turbine through bolts, the guide sleeve is arranged in a guide sleeve mounting hole of the positioning plate, the axis of the guide sleeve is perpendicular to the end face of the positioning plate, the grinding rod is inserted into a central hole of the guide sleeve, the grinding rod is coaxial with the guide sleeve, one end of the grinding rod is provided with the handle, the other end of the grinding rod is connected with the valve disc, and the other end of the valve disc is in contact with the diffusion steam nozzle. The positioning plate is a rectangular flat plate, a guide sleeve mounting hole is formed in the center of the end face of the positioning plate, the guide sleeve mounting hole is a step hole, a bolt hole is formed in the outer side of the guide sleeve mounting hole, and the bolt hole is a waist-shaped long hole. The guide sleeve is a round tube, a central hole of the guide sleeve is matched with the grinding rod, and the outer wall of the guide sleeve is matched with the guide sleeve mounting hole. The grinding rod is sequentially provided with a first step shaft, a second step shaft and a third step shaft from left to right, the outer diameters of the first step shaft and the third step shaft are smaller than the outer diameter of the second step shaft, a handle mounting hole for inserting a handle is formed in the left end of the first step shaft, the outer diameter of the second step shaft is matched with the central hole of the guide sleeve, a threaded hole is formed in the right end face of the third step shaft, and one end of the valve disc is mounted in the threaded hole. The diameter of the guide sleeve mounting hole is larger than the outer diameter of the valve disc. The grinding device for the valve disc and the diffusion steam nozzle of the steam turbine has the advantages that the structure is simple, the disassembly and the assembly are convenient, the grinding effect between the valve disc and the diffusion steam nozzle can be quickly and accurately realized, the production efficiency is improved, the labor intensity of workers is reduced, and the smooth production flow is ensured. Drawings Fig. 1 is a front view of the present utility model. Fig. 2 is a top view of the locating plate. Fig. 3 is a cross-sectional view of the guide sleeve. Fig. 4 is a front view of the polishing rod. In the figure, 1, a locating plate, 2, a guide sleeve, 3, a grinding rod, 4, a handle, 5, a bolt, 6, a valve disc, 7, a diffusion steam nozzle, 11, a guide sleeve mounting hole, 12, a bolt hole, 21, a center hole, 22, an outer wall, 31, a first step shaft, 32, a second step shaft, 33, a third step shaft, 34, a handle mounting hole, 35 and a threaded hole are arranged. Detailed Description The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present utility model are included in the protection scope of the present utility model. The utility model is further elaborated by the following specific embodiments with reference to