Adjusting structure for rotating partition plate of steam turbine

Abstract

The utility model discloses a steam turbine rotating partition plate adjusting structure, and belongs to the technical field of steam turbines. The steam turbine rotating partition plate adjusting structure comprises a partition plate body, a rotating ring is coaxially and rotationally arranged on the partition plate body, the steam turbine rotating partition plate adjusting structure further comprises a cover ring detachably arranged on the partition plate body, a rotating groove is formed in the cover ring, the rotating ring is rotationally arranged in the rotating groove, and multiple sets of balls are rotationally arranged on the inner wall of the rotating groove; the multiple sets of balls abut against the outer wall of the rotating ring. The rotating groove is formed in the cover ring, the ball is arranged in the rotating groove, and the outer wall of the rotating ring abuts against the ball, so that the friction between the outer wall of the rotating ring and the cover ring can be reduced while reliable positioning and fixing of the rotating ring are guaranteed, and the situation that the rotating ring is jammed during adjustment can be reduced; the service life is prolonged; and the working stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine technical field especially relates to a steam turbine rotating baffle adjusting structure. BACKGROUND

[0002] With our country economic development, the market demand of heat and power cogeneration and central heating is bigger and bigger, the corresponding large, have the steam turbine with adjustable extraction function is popular with the user, among them, the extraction capacity of the high -power steam turbine controlled by rotating baffle can satisfy the heat user demand, and the market demand of steam turbine heat and power cogeneration is well realized.

[0003] The rotating ring always appears jam and easy to damage in the adjusting process of traditional rotating baffle, so that the stability of steam turbine working is affected when adjusting. UTILITY MODEL CONTENT

[0004] The utility model discloses a steam turbine rotating baffle adjusting structure, which solves the problem of easy jamming and damage of the rotating ring in the prior art, and improves the stability of the steam turbine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A steam turbine rotating baffle adjusting structure, comprising a baffle body, a rotating ring coaxially arranged on the baffle body, a cover ring detachably arranged on the baffle body, a rotating groove formed on the cover ring, the rotating ring arranged in the rotating groove, and a plurality of balls arranged on the inner wall of the rotating groove, wherein the balls are in contact with the outer wall of the rotating ring.

[0007] In order to further reduce friction and improve the rotating effect of the rotating ring, preferably, an oil storage cavity for storing lubricating oil is formed in the cover ring, and one end of the ball extends into the oil storage cavity.

[0008] In order to facilitate the addition of lubricating oil to the oil storage cavity, further, an oil injection hole is formed in the cover ring and communicates with the oil storage cavity, and a plug is threadedly connected in the oil injection hole.

[0009] In order to ensure that the cover ring and the rotating ring are fixed reliably on the baffle body and improve the assembly efficiency, preferably, a positioning column is fixedly arranged on the baffle body, a positioning groove corresponding to the positioning column is formed in the cover ring, the positioning column is slidably arranged in the positioning groove, and the positioning column is provided with two groups.

[0010] Further, a plurality of stepped holes are formed in the cover ring, a threaded hole corresponding to the stepped hole is formed in the baffle body, and the cover ring is detachably connected with the baffle body by bolts.

[0011] Preferably, the rotating ring is fixedly provided with a rotating plate, the cover ring is provided with an avoiding slot, the rotating plate is rotationally arranged in the avoiding slot, and the rotating ring is fixedly provided with a rubber pad on an end face away from the partition body, and the rubber pad abuts against the rotating slot side wall.

[0012] Compared with the prior art, the steam turbine rotating partition adjusting structure has the following beneficial effects:

[0013] 1. The steam turbine rotating partition adjusting structure has the following beneficial effects: the rotating slot is arranged on the cover ring, the ball is arranged in the rotating slot, the outer wall of the rotating ring abuts against the ball, reliable positioning and fixation of the rotating ring are ensured, friction between the outer wall of the rotating ring and the cover ring is reduced, the occurrence of jamming of the rotating ring during adjustment is reduced, service life and stability during work are improved.

[0014] 2. The steam turbine rotating partition adjusting structure has the following beneficial effects: the oil storage cavity is arranged in the cover ring, lubricating oil in the oil storage cavity is brought into the rotating slot when the ball rotates, the lubrication between the ball and the rotating ring is increased, the rotating effect of the rotating ring is improved, and the occurrence of jamming is reduced.

[0015] The parts not involved in the device are the same as or can be realized by the prior art, the rotating slot is arranged on the cover ring, the ball is arranged in the rotating slot, the outer wall of the rotating ring abuts against the ball, reliable positioning and fixation of the rotating ring are ensured, friction between the outer wall of the rotating ring and the cover ring is reduced, the occurrence of jamming of the rotating ring during adjustment is reduced, service life and stability during work are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of the steam turbine rotating partition adjusting structure is provided for the utility model Figure 1 ;

[0017] Figure 2 A structure diagram of the steam turbine rotating partition adjusting structure is provided for the utility model Figure 2 ;

[0018] Figure 3 A structure diagram of the cover ring of the steam turbine rotating partition adjusting structure is provided for the utility model

[0019] Figure 4 A structure diagram of the ball of the steam turbine rotating partition adjusting structure is provided for the utility model

[0020] In the figure: 1, partition body; 101, positioning column; 2, rotating ring; 201, rotating plate; 202, rubber pad; 3, cover ring; 301, rotating groove; 302, positioning groove; 303, ball; 304, oil storage cavity; 305, oil injection hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] Embodiment:

[0024] With reference to Figures 1-4 A rotating partition adjusting structure of a steam turbine, comprising a partition body 1, a rotating ring 2 is coaxially arranged on the partition body 1, steam passages are uniformly arranged on the partition body 1, adjusting grooves corresponding to the steam passages are arranged on the rotating ring 2, the rotating ring 2 is driven to rotate by a certain angle, the area of the steam passages can be adjusted to realize the function of flow adjustment, further comprising a cover ring 3 arranged on the partition body 1, a rotating groove 301 is arranged on the cover ring 3, the rotating ring 2 is arranged in the rotating groove 301, and a plurality of groups of ball bodies 303 are arranged on the inner wall of the rotating groove 301, the ball bodies 303 are arranged in two groups, each group comprises two to twenty ball bodies 303, preferably eighteen ball bodies 303, the plurality of groups of ball bodies 303 are in contact with the outer wall of the rotating ring 2, in use, the rotating groove 301 is arranged on the cover ring 3, the ball bodies 303 are arranged in the rotating groove 301, the outer wall of the rotating ring 2 is in contact with the ball bodies 303, the reliable positioning and fixing of the rotating ring 2 are ensured, the friction between the outer wall of the rotating ring 2 and the cover ring 3 is reduced, the jamming of the rotating ring 2 during adjustment is reduced, and the service life and stability during operation are improved.

[0025] With reference to Figure 1 and Figure 4The cover ring 3 is provided with an oil storage cavity 304 for storing lubricating oil, and one end of the ball 303 extends into the oil storage cavity 304. When in use, the lubricating oil in the oil storage cavity 304 can be brought into the rotating groove 301 when the ball 303 rotates, thereby increasing the lubrication between the ball 303 and the rotating ring 2, improving the rotating effect of the rotating ring 2, and reducing the occurrence of jamming.

[0026] Referring to Figure 1 The cover ring 3 is provided with an oil storage cavity 304 for storing lubricating oil, and one end of the ball 303 extends into the oil storage cavity 304. When in use, the lubricating oil in the oil storage cavity 304 can be brought into the rotating groove 301 when the ball 303 rotates, thereby increasing the lubrication between the ball 303 and the rotating ring 2, improving the rotating effect of the rotating ring 2, and reducing the occurrence of jamming.

[0027] Referring to Figures 1-3 The cover ring 3 is provided with an oil storage cavity 304 for storing lubricating oil, and one end of the ball 303 extends into the oil storage cavity 304. When in use, the lubricating oil in the oil storage cavity 304 can be brought into the rotating groove 301 when the ball 303 rotates, thereby increasing the lubrication between the ball 303 and the rotating ring 2, improving the rotating effect of the rotating ring 2, and reducing the occurrence of jamming.

[0028] Referring to Figures 1-3 The cover ring 3 is provided with an oil storage cavity 304 for storing lubricating oil, and one end of the ball 303 extends into the oil storage cavity 304. When in use, the lubricating oil in the oil storage cavity 304 can be brought into the rotating groove 301 when the ball 303 rotates, thereby increasing the lubrication between the ball 303 and the rotating ring 2, improving the rotating effect of the rotating ring 2, and reducing the occurrence of jamming.

[0029] Referring to Figure 1 And Figure 2 The rotating ring 2 is fixedly provided with a rotating plate 201, which can be driven by a cylinder or an oil motor to rotate around the axis of the partition body 1, so as to adjust the flow area of the air passage on the partition body 1. In addition, the cover ring 3 is provided with a avoiding groove, and the rotating plate 201 is rotatably arranged in the avoiding groove, so as to reduce the interference of the cover ring 3 with the rotating plate 201 during rotation, improve the use effect, and the end face of the rotating ring 2 away from the partition body 1 is fixedly provided with a rubber pad 202, which abuts against the side wall of the rotating groove 301. By arranging the rubber pad 202, the rotating ring 2 can be pressed towards the partition body 1 by the elasticity of the rubber pad 202, thereby improving the tightness between the rotating ring 2 and the partition body 1.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rotating diaphragm adjusting structure of a steam turbine, comprising a diaphragm body (1) and a rotating ring (2) coaxially arranged on the diaphragm body (1), characterized in that, Also include dismounting setting on the partition plate body (1) cover ring (3), the cover ring (3) is set with rotation groove (301), the rotation ring (2) rotation setting in rotation groove (301), and the rotation groove (301) inner wall rotation sets up multiple groups of ball (303), multiple groups the ball (303) all with rotation ring (2) outer wall is resisted.

2. A rotating diaphragm adjustment structure for a steam turbine according to claim 1, wherein The cover ring (3) is set with oil storage cavity (304) for storing lubricating oil, one end of the ball (303) extends into the oil storage cavity (304).

3. A rotating diaphragm adjustment structure for a steam turbine according to claim 2, wherein The cover ring (3) is set with oil injection hole (305) that communicates with the oil storage cavity (304), and the oil injection hole (305) is screw connected with the plug.

4. A rotating diaphragm adjustment structure for a steam turbine according to claim 1, wherein The partition plate body (1) is fixedly provided with a positioning column (101), and the cover ring (3) is provided with a positioning groove (302) corresponding to the positioning column (101), the positioning column (101) is slidably arranged in the positioning groove (302), and the positioning column (101) is provided with two groups.

5. A rotating diaphragm adjustment structure for a steam turbine according to claim 4, wherein The cover ring (3) is set with multiple groups of stepped holes, and the partition plate body (1) is set with threaded holes corresponding to the stepped holes, and the cover ring (3) is detachably connected with the partition plate body (1) through bolts.

6. A rotating diaphragm adjustment structure for a steam turbine according to claim 1, wherein The rotation ring (2) is fixedly provided with a rotating plate (201), the cover ring (3) is set with an avoiding groove, the rotating plate (201) is rotationally arranged in the avoiding groove, and a rubber pad (202) is fixedly arranged on the end face of the rotation ring (2) away from the partition plate body (1), and the rubber pad (202) is resisted by the side wall of the rotation groove (301).

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