Friction test device for gland sealing strip and rotor shaft neck

Abstract

The utility model belongs to the technical field of gland sealing strip and rotor shaft necks, and particularly relates to a gland sealing strip and rotor shaft neck friction test device, which comprises a friction test device main body, a rotor shaft neck assembly is arranged at the top of the friction test device main body, and a gland sealing strip assembly is arranged on the side of the rotor shaft neck assembly. A rotor test ring assembly is arranged on the other side of the steam sealing sheet assembly; the same-rotor shaft neck assembly comprises a first motor, the output end of the first motor is fixedly connected with a worm body, the top of the worm body is meshed with a worm gear body, the side of the worm gear body is fixedly connected with a threaded rod body, and one end of the threaded rod body is movably connected with a threaded rod rotating shaft; according to the utility model, through a friction test of the gland plate and the rotor journal, the stability of unit operation is improved, and device damage caused by contact between the gland plate and the journal when the gland plate is installed is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of steam seal pieces and rotor journals, in particular to a friction test device for steam seal pieces and rotor journals. Background Art

[0002] The steam seal is installed between the moving and static parts of the turbine to reduce or prevent steam leakage and air leakage on the vacuum side. The journal is generally the place on the shaft for installing bearings. It refers to a section of the shaft with the same diameter or a cylindrical surface with different diameters but a uniform and continuous outer surface. The outer surface must be uniform and continuous, and there must be no shoulders or grooves to disconnect it.

[0003] Long-term operation of conventional steam seals of steam turbine units may cause wear, which may cause reduced turbine efficiency and vibration. Steam seal wear will lead to increased steam leakage of the turbine, wear the shaft neck, and affect the efficiency of the turbine and the economic operation of the unit. Severe steam leakage will cause turbine vibration and affect the safe and stable operation of the unit. Therefore, it is necessary to perform a friction test on the steam seal plate and the rotor shaft neck. When installing the steam seal plate, the traditional friction test device needs to install the steam seal plate through the shaft neck. Due to the small gap between the steam seal plate and the shaft neck, contact friction may occur, which may cause damage to the device.

[0004] Therefore, in order to solve the above problems, a friction test device for steam seal plate and rotor journal is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, the problem of friction between the steam seal and the rotor journal is solved, and the problem of damage caused by contact between the steam seal and the journal during installation and removal is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the utility model describes a friction test device for a steam sealing plate and a rotor journal, comprising a friction test device main body, a rotor journal assembly being provided on the top of the friction test device main body, a steam sealing plate assembly being installed on the side of the rotor journal assembly, and a rotor test ring assembly being provided on the other side of the steam sealing plate assembly; the rotor journal assembly comprising a first motor, a worm body being fixedly connected to the output end of the first motor, a worm body being meshed with a worm wheel body on the top of the worm body, and a threaded rod body being fixedly connected to the side of the worm wheel body, one end of the threaded rod body being movably connected to a threaded rod rotating shaft, and a movable plate being threadedly connected to the outer wall of the threaded rod body.

[0007] Preferably, the movable plate forms a sliding structure through the threaded rod body and the friction test device body, and the threaded rod body forms a rotating structure through the worm wheel body and the threaded rod shaft, and the worm wheel body and the worm body are meshed with each other.

[0008] Preferably, the steam sealing plate assembly includes a second motor, the output end of the second motor is fixedly connected to the shaft neck body, the outer wall of the shaft neck body is provided with a steam sealing plate body, and the internal thread of the steam sealing plate body is connected with a mounting screw.

[0009] Preferably, the mounting screws form a threaded detachable structure through the steam sealing piece body and the friction test device body, and the steam sealing piece body and the friction test device body form a detachable structure.

[0010] Preferably, the rotor test ring assembly includes a rotor test ring body, the side of the rotor test ring body is fixedly connected to the rotating shaft body, and the other side of the rotating shaft body is fixedly connected to the locking groove, the outer wall of the rotating shaft body is locked and connected to the rotating shaft base, and a movable ball is arranged inside the rotating shaft base.

[0011] Preferably, the rotor test ring body forms a rotating structure through the rotating shaft body, the engaging groove and the rotating shaft base, and the engaging groove and the shaft neck body form a engaging structure.

[0012] Preferably, the movable balls are arranged at equal angles with respect to the horizontal central axis of the rotating shaft base, and the rotating shaft base and the rotating shaft body form a snap-fit ​​structure.

[0013] The utility model is beneficial in that:

[0014] 1. The movable plate forms a sliding structure with the main body of the friction test device through the threaded rod body, and the threaded rod body forms a rotating structure with the threaded rod shaft through the worm gear body. The worm gear body and the worm body are engaged with each other, which facilitates the adjustment of the position of the journal body. When installing the steam seal body, the journal body is moved to a safe position.

[0015] 2. The mounting screws form a threaded detachable structure through the steam seal plate body and the friction test device body, and the steam seal plate body and the friction test device body form a detachable structure, which is convenient for installing and disassembling the steam seal plate body and for selecting different steam seal plate bodies for friction testing;

[0016] 3. The rotor test ring body forms a rotating structure through the rotating shaft body, the engaging groove and the rotating shaft base, and the engaging groove and the shaft neck body form an engaging structure. The movable balls are arranged at equal angles with respect to the horizontal center axis of the rotating shaft base, and the rotating shaft base and the rotating shaft body form an engaging structure, which facilitates the stable conduct of the friction test, plays an auxiliary role, and ensures the stability of the rotation of the shaft neck body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model as a whole;

[0019] Figure 2 This is a schematic diagram of the internal structure of the rotor journal assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the disassembly structure of the steam seal assembly of the utility model;

[0021] Figure 4 This is an enlarged structural diagram of the rotor test ring assembly of the utility model;

[0022] Figure 5 This is a schematic diagram of the disassembly structure of the rotor test ring assembly of the utility model.

[0023] In the figure: 1. Friction test device body; 2. Rotor journal assembly; 201. First motor; 202. Worm body; 203. Worm wheel body; 204. Threaded rod body; 205. Threaded rod shaft; 206. Moving plate; 3. Steam seal assembly; 301. Second motor; 302. Journal body; 303. Steam seal body; 304. Mounting screws; 4. Rotor test ring assembly; 401. Rotor test ring body; 402. Rotating shaft body; 403. Engaging groove; 404. Rotating shaft base; 405. Movable ball. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, a friction test device for a steam seal plate and a rotor journal comprises a friction test device body 1, a rotor journal assembly 2 is arranged on the top of the friction test device body 1, a steam seal plate assembly 3 is installed on the side of the rotor journal assembly 2, and a rotor test ring assembly 4 is arranged on the other side of the steam seal plate assembly 3.

[0026] like Figure 2As shown, a friction test device for a steam seal plate and a rotor journal, together with a rotor journal assembly 2, includes a first motor 201, an output end of the first motor 201 is fixedly connected to a worm body 202, and the top of the worm body 202 is meshed with a worm wheel body 203, and the side of the worm wheel body 203 is fixedly connected to a threaded rod body 204, one end of the threaded rod body 204 is movably connected to a threaded rod rotating shaft 205, and the outer wall of the threaded rod body 204 is threadedly connected to a movable plate 206. When the first motor 201 is started, the first motor 201 drives the worm body 202 to rotate, and the worm body 202 drives the worm wheel body 203 to rotate. The body 203 and the threaded rod body 204 rotate around the threaded rod shaft 205, and the threaded rod body 204 drives the movable plate 206 to move horizontally until the journal body 302 passes through the steam sealing plate body 303. The movable plate 206 forms a sliding structure with the friction test device body 1 through the threaded rod body 204, and the threaded rod body 204 forms a rotating structure with the threaded rod shaft 205 through the worm gear body 203, and the worm gear body 203 and the worm body 202 are engaged with each other, which is convenient for adjusting the position of the journal body 302. When installing the steam sealing plate body 303, the journal body 302 is moved to a safe position.

[0027] like Figure 3 As shown, a friction test device for a steam sealing plate and a rotor shaft neck is provided, and the steam sealing plate assembly 3 includes a second motor 301. The output end of the second motor 301 is fixedly connected to the shaft neck body 302, and the outer wall of the shaft neck body 302 is provided with a steam sealing plate body 303, and the internal thread of the steam sealing plate body 303 is connected to the mounting screw 304. The steam sealing plate body 303 is placed in the mounting groove of the friction test device body 1, and the steam sealing plate body 303 is fixed by using the mounting screw 304 to pass through the steam sealing plate body 303. The second motor 301 is started, and the second motor 301 drives the shaft neck body 302 to rotate. The mounting screw 304 forms a threaded detachable structure with the steam sealing plate body 303 and the friction test device body 1, and the steam sealing plate body 303 and the friction test device body 1 form a detachable structure, which is convenient for installing and disassembling the steam sealing plate body 303 and convenient for selecting different steam sealing plate bodies 303 for friction testing.

[0028] like Figure 4 、 Figure 5As shown, a friction test device for a steam seal and a rotor journal, a rotor test ring assembly 4, includes a rotor test ring body 401, a side of the rotor test ring body 401 is fixedly connected to a rotating shaft body 402, and the other side of the rotating shaft body 402 is fixedly connected to a clamping groove 403, the outer wall of the rotating shaft body 402 is clamped and connected to a rotating shaft base 404, and a movable ball 405 is provided inside the rotating shaft base 404. As the movable plate 206 moves, the journal body 302 is clamped into the inside of the clamping groove 403, and the journal body 302 drives the clamping groove 403 and the rotating shaft body 40 2. The rotor test ring body 401 rotates around the shaft base 404, and the movable ball 405 plays an auxiliary role in rotation. The rotor test ring body 401 forms a rotation structure through the shaft body 402, the locking groove 403 and the shaft base 404, and the locking groove 403 and the shaft neck body 302 form a locking structure. The movable ball 405 is set at equal angles with respect to the horizontal center axis of the shaft base 404, and the shaft base 404 and the shaft body 402 form a locking structure, which facilitates the stable conduct of the friction test, plays an auxiliary role, and ensures the stability of the rotation of the shaft neck body 302.

[0029] Working principle: First, place the steam sealing piece body 303 in the mounting groove of the friction test device main body 1, and use the mounting screw 304 to pass through the steam sealing piece body 303 to fix the steam sealing piece body 303. Then, start the first motor 201, the first motor 201 drives the worm body 202 to rotate, and the worm body 202 drives the worm wheel body 203 and the threaded rod body 204 to rotate around the threaded rod rotating shaft 205, and the threaded rod body 204 drives the movable plate 206 to move horizontally until the shaft neck body 302 passes through the steam sealing piece body 303. At the same time, with the movement of the movable plate 206, the shaft neck body 302 is stuck in the inside of the engaging groove 403. Then, the friction test between the steam sealing piece and the rotor shaft neck is carried out, and the second motor 301 is started. The second motor 301 drives the shaft neck body 302 to rotate, and the shaft neck body 302 drives the engaging groove 403, the rotating shaft body 402, and the rotor test ring body 401 to rotate around the rotating shaft base 404, and the movable ball 405 plays a role in assisting the rotation.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A friction test device for a steam seal and a rotor journal, characterized by: The friction test device comprises a main body (1), a rotor journal assembly (2) is provided on the top of the main body (1), a steam seal assembly (3) is installed on the side of the rotor journal assembly (2), and a rotor test ring assembly (4) is provided on the other side of the steam seal assembly (3); The rotor journal assembly (2) comprises a first motor (201), wherein the output end of the first motor (201) is fixedly connected to a worm body (202), the top of the worm body (202) is meshed with a worm wheel body (203), and the side of the worm wheel body (203) is fixedly connected to a threaded rod body (204), one end of the threaded rod body (204) is movably connected to a threaded rod rotating shaft (205), and the outer wall of the threaded rod body (204) is threadedly connected to a movable plate (206).

2. A friction test device for a steam seal and a rotor journal according to claim 1, characterized in that: The movable plate (206) forms a sliding structure with the friction test device body (1) through the threaded rod body (204), and the threaded rod body (204) forms a rotating structure with the threaded rod shaft (205) through the worm wheel body (203), and the worm wheel body (203) and the worm body (202) are meshed with each other.

3. The friction test device for a steam seal plate and a rotor journal according to claim 1, characterized in that: The steam sealing plate assembly (3) comprises a second motor (301), the output end of the second motor (301) is fixedly connected to a shaft neck body (302), the outer wall of the shaft neck body (302) is provided with a steam sealing plate body (303), and the internal thread of the steam sealing plate body (303) is connected to a mounting screw (304).

4. A friction test device for a steam seal plate and a rotor journal according to claim 3, characterized in that: The mounting screw (304) forms a threaded detachable structure through the steam sealing piece body (303) and the friction test device body (1), and the steam sealing piece body (303) and the friction test device body (1) form a detachable structure.

5. The friction test device for a steam seal plate and a rotor journal according to claim 1, characterized in that: The rotor test ring assembly (4) comprises a rotor test ring body (401), a side of the rotor test ring body (401) is fixedly connected to a rotating shaft body (402), and the other side of the rotating shaft body (402) is fixedly connected to a locking groove (403), the outer wall of the rotating shaft body (402) is locked and connected to a rotating shaft base (404), and a movable ball (405) is arranged inside the rotating shaft base (404).

6. The friction test device for a steam seal plate and a rotor journal according to claim 5, characterized in that: The rotor test ring body (401) forms a rotating structure through the rotating shaft body (402), the engaging groove (403) and the rotating shaft base (404), and the engaging groove (403) and the shaft neck body (302) form an engaging structure.

7. The friction test device for steam seal plate and rotor journal according to claim 5, characterized in that: The movable balls (405) are arranged at equal angles with respect to the horizontal central axis of the rotating shaft base (404), and the rotating shaft base (404) and the rotating shaft body (402) form a snap-fit ​​structure.

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