Fluid rotary machine gas seal plate

Abstract

The utility model discloses a kind of fluid rotary machinery air seal plate, including wheel disc, blade, air seal plate and limiting component, wheel disc is equipped with wheel disc air seal groove, the blade is assembled on wheel disc, blade air seal groove is equipped on the blade, air seal plate is inserted between blade air seal groove and wheel disc air seal groove. The utility model, by inserting air seal plate into blade air seal groove, then make screw pass through between the two protrusions of air seal plate, screw can not only play the role of supporting air seal plate at this time, to prevent its falling, air seal plate can also be prevented from separating from blade air seal groove, wherein by screw pass through between the two protrusions of air seal plate, it can also play the role of constraint air seal plate tangential rotation, and under the effect of air seal plate, it can be very good to play the role of blocking gas circulation and restricting blade axial movement, wherein air seal plate is simple in structure and has few assembly surfaces, so its processing technology requirement is also relatively not high.

Description

Technical Field

[0001] This utility model relates to the field of fluid rotary machinery air seal structure technology, and in particular to a fluid rotary machinery air seal plate. Background Technology

[0002] The air seal structure of fluid rotating machinery is assembled between the blades and the air seal groove of the wheel disc. Its main functions are to block the flow of gas in the wheel disc cavity and to achieve axial positioning of the blade root. At present, the existing large fluid rotating machinery air seal structure designs in the world are relatively complex. Moreover, multiple structures need to be assembled together to achieve the functions of air sealing and locking. At the same time, the complex structure inevitably increases the processing requirements of each component and the difficulty of assembling the overall air seal structure.

[0003] Furthermore, for medium and small-sized fluid rotating machinery, if the gas seal structure design of large fluid rotating machinery is adopted, the dimensional requirements of each gas seal structure will be more stringent, and the processing requirements of each gas seal structure will also be correspondingly increased. The limited assembly space for the gas seal body will also greatly increase the assembly requirements. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings mentioned above by providing a fluid rotary mechanical air seal plate that has the advantages of simple structure, low processing requirements, and no need for assembling multiple air seal structures.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a fluid rotary mechanical air seal plate, comprising a wheel, blades, an air seal plate, and a limiting assembly: The wheel is provided with a wheel air seal groove; The blade is mounted on the wheel, and the blade has a blade air seal groove, which is opposite to the wheel air seal groove. The air seal plate is inserted between the blade air seal groove and the wheel air seal groove; The limiting component is mounted on the wheel to support and fix the air seal plate.

[0006] Furthermore, the top view cross-sectional size of the wheel air seal groove is adapted to the top view cross-sectional size of the air seal plate.

[0007] Furthermore, the size of the blade air seal groove is adapted to the top size of the air seal plate.

[0008] Furthermore, the bottom of the air seal plate is provided with two protrusions, and both sides of the two protrusions are arc-shaped, and the side of the air seal plate near the protrusion is inclined.

[0009] Furthermore, the limiting component includes a screw screwed onto the wheel, and a stop washer that fits against the surface of the wheel is sleeved on the surface of the screw.

[0010] Furthermore, the stop washer has an L-shaped structure, and the surface of the stop washer has through holes corresponding to the screw.

[0011] The beneficial effects of this utility model are reflected in: In use, this utility model involves inserting an air-sealing plate into the blade's air-sealing groove, and then passing a screw between the two protrusions of the air-sealing plate. The screw not only supports the air-sealing plate to prevent it from falling but also prevents it from detaching from the blade's air-sealing groove. The screw passing between the two protrusions also constrains the tangential rotation of the air-sealing plate. A stop washer is added to the screw to prevent it from loosening and coming off during operation. Through these operations, the air-sealing plate is assembled. Under the action of the air-sealing plate, it effectively blocks gas flow and constrains the axial movement of the blade. Because the air-sealing plate has a simple structure and few assembly surfaces, its processing requirements are relatively low. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is an assembly drawing of the present utility model; Figure 4 This is a schematic diagram of the structure of the air seal plate of this utility model.

[0013] In the picture: 1. Wheel; 2. Wheel air seal groove; 3. Blade; 4. Blade air seal groove; 5. Air seal plate; 6. Screw; 7. Stop washer. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0015] Please see Figure 1-4 This utility model discloses a fluid rotary mechanical air seal plate, including a wheel 1, blades 3, an air seal plate 5, and a limiting assembly: The wheel 1 has a wheel air seal groove 2, and the wheel 1 also has a horizontally set threaded hole that communicates with the wheel air seal groove 2.

[0016] The blade 3 is mounted on the wheel 1, and the blade 3 has a blade air seal groove 4, which is opposite to the wheel air seal groove 2. The air seal plate 5 is inserted between the blade air seal groove 4 and the wheel air seal groove 2. The top view cross-section size of the wheel air seal groove 2 is matched with the top view cross-section size of the air seal plate 5, and the size of the blade air seal groove 4 is matched with the top size of the air seal plate 5. This ensures that the air seal plate 5 is inserted into the blade air seal groove 4 and the wheel air seal groove 2, and fits against the groove wall after insertion. The bottom of the air seal plate 5 has two protrusions, and both sides of the two protrusions are arc-shaped. The side of the air seal plate 5 near the protrusion is inclined. The inclined surface makes it easy for the air seal plate 5 to change from an inclined state to a vertical state after it is inserted into the wheel air seal groove 2 at an angle. It should be noted that when the top of the air seal plate 5 is fully inserted into the blade air seal groove 4, the arc-shaped groove between the two protrusions at the bottom of the air seal plate 5 is aligned with the threaded hole on the wheel 1.

[0017] The limiting component is mounted on the wheel 1 to support and fix the air seal plate 5; The limiting component includes a screw 6 screwed into a threaded hole on the wheel 1. By rotating the screw 6, it is inserted into the air seal groove 2 of the wheel. During the insertion process, it passes through the arc groove between the two protrusions at the bottom of the air seal plate 5. This allows the screw 6 to support the air seal plate 5 after insertion, preventing it from falling and disengaging from the blade air seal groove 4. At the same time, the cooperation between the protrusions on both sides and the screw 6 can also constrain the tangential rotation of the air seal plate 5. A stop washer 7, which fits against the surface of the wheel 1, is fitted onto the surface of the screw 6. The stop washer 7 has an L-shaped structure, which allows the stop washer 7 to fit tightly against the surface of the wheel 1. The surface of the stop washer 7 has a through hole corresponding to the screw 6, so that the screw 6 can pass through the stop washer 7. Under the action of the stop washer 7, the screw 6 can be prevented from loosening and coming off during operation.

[0018] With the above structural design, in use, the protruding end of the air seal plate 5 is inserted obliquely into the wheel disc air seal groove 2. After insertion, the air seal plate 5 is changed from an oblique state to a vertical state. At this time, the blade air seal groove 4 corresponds to the top of the air seal plate 5. The air seal plate 5 is then moved upward and finally inserted into the blade air seal groove 4, leaving the bottom of the air seal plate 5 suspended. Then, by rotating the screw 6, it is inserted laterally into the wheel disc air seal groove 2. At this time, the screw 6 passes between the two protrusions of the air seal plate 5. The screw 6 not only serves to support the air seal plate 5, but also... To prevent it from falling and to prevent the air seal plate 5 from detaching from the blade air seal groove 4, the screw 6 passes between the two protrusions of the air seal plate 5, which also helps to restrain the tangential rotation of the air seal plate 5. A stop washer 7 is installed on the screw 6 to prevent the screw 6 from loosening and coming off during operation. Through the above operations, the air seal plate 5 is assembled, which can effectively block the flow of gas and restrain the axial movement of the blade 3. Since the air seal plate 5 has a simple structure and few assembly surfaces, the processing requirements for it are relatively low.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] Additionally, "multiple" refers to two or more.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fluid rotary mechanical air seal plate, characterized in that, Includes a wheel (1), blades (3), an air seal plate (5), and a limiting assembly: The wheel (1) is provided with a wheel air seal groove (2); The blade (3) is mounted on the wheel (1), and the blade (3) has a blade air seal groove (4), which is opposite to the wheel air seal groove (2). The air seal plate (5) is inserted between the blade air seal groove (4) and the wheel air seal groove (2); The limiting component is set on the wheel (1) to support and fix the air seal plate (5).

2. The fluid rotary mechanical air seal plate according to claim 1, characterized in that: The top view cross-sectional size of the wheel air seal groove (2) is adapted to the top view cross-sectional size of the air seal plate (5).

3. The fluid rotary mechanical air seal plate according to claim 1, characterized in that: The size of the blade air seal groove (4) is adapted to the top size of the air seal plate (5).

4. The fluid rotary mechanical air seal plate according to claim 1, characterized in that: The bottom of the air seal plate (5) is provided with two protrusions, and both sides of the two protrusions are arc-shaped. The side of the air seal plate (5) near the protrusion is inclined.

5. The fluid rotary mechanical air seal plate according to claim 1, characterized in that: The limiting component includes a screw (6) screwed onto the wheel (1), and a stop washer (7) that fits against the surface of the wheel (1) is sleeved on the surface of the screw (6).

6. The fluid rotary mechanical air seal plate according to claim 5, characterized in that: The stop washer (7) has an L-shaped structure, and the surface of the stop washer (7) has through holes corresponding to the screw (6).

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