Water turbine main shaft sealing device

Abstract

The utility model discloses a water turbine main shaft sealing device which relates to the technical field of main shaft sealing and comprises a main shaft body and a plurality of arc-shaped waterproof plates, an arc-shaped sealing plate is fixedly arranged on the inner wall of each arc-shaped mounting groove, each arc-shaped sealing plate is arranged on the side wall of the main shaft body in an attached mode, and the arc-shaped waterproof plates are arranged in the arc-shaped mounting grooves. The multiple arc-shaped waterproof plates are matched with the two ends of the two arc-shaped sealing plates correspondingly. The two rectangular plates are clamped to the outer wall of the main shaft body through the arranged arc-shaped waterproof plates, then the two arc-shaped sealing plates can seal the main shaft, the multiple arc-shaped waterproof plates can be driven to move by rotating the annular threaded plate, and then the multiple arc-shaped waterproof plates can tightly clamp the tops and the bottoms of the two arc-shaped sealing plates. Therefore, the waterproof capacity of the two arc-shaped sealing plates can be improved, the arc-shaped sealing plates are prevented from being corroded in a humid environment for a long time, the service life of the arc-shaped sealing plates is prolonged, and the sealing effect of the water turbine main shaft is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of main shaft seals, and particularly relates to a main shaft seal device for a water turbine. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. The prototype of a water turbine is a water wheel, which is used for irrigation and driving grain processing equipment; most modern water turbines are installed in hydropower stations to drive generators to generate electricity.

[0003] In the process of implementing the present application, the applicant found that although the existing main shaft seal device of a water turbine can seal the main shaft of the water turbine by using a gasket during use, the water turbine is in a humid environment for a long time. Therefore, after long-term use, the gasket will be affected by moisture and corroded, making it difficult to improve the service life of the arc-shaped sealing plate and enhance the sealing effect of the main shaft of the water turbine. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the gasket will be affected by moisture and corroded after long-term use in the prior art, and to provide a main shaft seal device for a water turbine.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A main shaft seal device for a water turbine includes a main shaft body and a plurality of arc-shaped waterproof plates. Two rectangular plates are arranged on the outer wall of the main shaft body. An arc-shaped installation groove is formed in the side wall of each rectangular plate. An arc-shaped sealing plate is fixedly arranged on the inner wall of each arc-shaped installation groove. Each arc-shaped sealing plate is attached to the side wall of the main shaft body. An external thread is formed on the outer wall of the main shaft body. Two annular threaded plates are threadedly sleeved on the outer wall of the main shaft body. The plurality of arc-shaped waterproof plates are respectively attached to the side walls of the corresponding annular threaded plates. The plurality of arc-shaped waterproof plates are all attached to the outer wall of the main shaft body. The plurality of arc-shaped waterproof plates respectively match the two ends of the two arc-shaped sealing plates. A connection mechanism is arranged outside the main shaft body. The two rectangular plates both match the connection mechanism.

[0007] Preferably, the connection mechanism includes two first mounting plates, two second mounting plates, two screw rods and two turntables. The two first mounting plates are fixedly arranged on the side wall of one of the rectangular plates. The two second mounting plates are fixedly arranged on the side wall of the other rectangular plate. The two screw rods are respectively movably sleeved inside the corresponding first mounting plates. One ends of the two screw rods are respectively threadedly sleeved inside the corresponding second mounting plates. The other ends of the two screw rods are respectively fixedly connected to the corresponding turntables.

[0008] Preferably, a plurality of bolts are movably sleeved inside each of the annular threaded plates, threaded holes are formed in the side walls of each of the arc-shaped waterproof plates, and one end of each of the bolts is threadedly sleeved inside the corresponding threaded hole.

[0009] Preferably, two limiting rods are fixedly arranged on the side walls of two of the arc-shaped waterproof plates, two limiting grooves are formed in the side walls of the other two arc-shaped waterproof plates, and one end of each of the limiting rods is inserted inside the corresponding limiting groove.

[0010] Preferably, each of the arc-shaped sealing plates is a rubber plate.

[0011] Preferably, each of the arc-shaped waterproof plates is a polypropylene plate.

[0012] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0013] 1. In the present utility model, by arranging the arc-shaped waterproof plates, the two rectangular plates are clamped on the outer wall of the main shaft body, and then the two arc-shaped sealing plates can seal the main shaft. By rotating the annular threaded plates, multiple arc-shaped waterproof plates can be driven to move, and then the multiple arc-shaped waterproof plates can clamp the top and bottom of the two arc-shaped sealing plates, thereby improving the waterproof ability of the two arc-shaped sealing plates, preventing the arc-shaped sealing plates from being corroded in a humid environment for a long time, increasing the service life of the arc-shaped sealing plates, and enhancing the sealing effect of the water turbine main shaft.

[0014] 2. In the present utility model, by arranging the connecting mechanism, the connecting mechanism includes two first mounting plates, two second mounting plates, two screw rods and two turntables. Rotating the two turntables can drive the corresponding screw rods to rotate, and then one end of the two screw rods can be threadedly sleeved inside the corresponding second mounting plates, thereby connecting the two rectangular plates and ensuring that the two rectangular plates and the two arc-shaped sealing plates can be stably arranged on the outer wall of the water turbine main shaft.

[0015] 3. In the present utility model, by arranging a plurality of bolts, the plurality of bolts are respectively movably sleeved inside the corresponding annular threaded plates. By screwing the plurality of bolts and making one end of the plurality of bolts be threadedly sleeved inside the corresponding threaded holes, the plurality of arc-shaped waterproof plates can be fixed on the side walls of the corresponding annular threaded plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 This is the front view of the present utility model;

[0018] Figure 2 This is for the Figure 1 sectional structure schematic diagram of the present utility model;

[0019] Figure 3 This is for the Figure 2 enlarged view of part A of the present utility model;

[0020] Figure 4 This is for the Figure 1 three-dimensional view of the annular threaded plate of the present utility model;

[0021] Figure 5 This is for the Figure 1 three-dimensional view of the rectangular plate of the present utility model.

[0022] Explanation of reference numerals in the drawings:

[0023] 1. Main shaft body; 2. Arc-shaped waterproof plate; 3. Rectangular plate; 4. Arc-shaped sealing plate; 5. Annular threaded plate; 6. First mounting plate; 7. Second mounting plate; 8. Screw; 9. Turntable; 10. Bolt; 11. Limiting rod. Specific embodiments

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] An embodiment of the present utility model discloses a water turbine main shaft sealing device.

[0026] The present utility model provides a water turbine main shaft sealing device as shown in Figures 1-5 , including a main shaft body 1 and a plurality of arc-shaped waterproof plates 2. There are two rectangular plates 3 arranged on the outer wall of the main shaft body 1. An arc-shaped installation groove is provided on the side wall of each rectangular plate 3. An arc-shaped sealing plate 4 is fixedly arranged on the inner wall of each arc-shaped installation groove. Each arc-shaped sealing plate 4 is attached to the side wall of the main shaft body 1. An external thread is provided on the outer wall of the main shaft body 1. Two annular threaded plates 5 are threadedly sleeved on the outer wall of the main shaft body 1. A plurality of arc-shaped waterproof plates 2 are respectively attached to the side walls of the corresponding annular threaded plates 5. A plurality of arc-shaped waterproof plates 2 are all attached to the outer wall of the main shaft body 1. A plurality of arc-shaped waterproof plates 2 respectively match the two ends of the two arc-shaped sealing plates 4. A connection mechanism is arranged outside the main shaft body 1. Both of the two rectangular plates 3 match the connection mechanism. By using the plurality of arc-shaped waterproof plates 2 provided, the waterproof ability of the two arc-shaped sealing plates 4 can be improved, preventing the arc-shaped sealing plates 4 from being corroded when in a humid environment for a long time, increasing the service life of the arc-shaped sealing plates 4, and enhancing the sealing effect of the water turbine main shaft.

[0027] In order to connect two rectangular plates 3 and ensure that the two rectangular plates 3 and the two arc-shaped sealing plates 4 can be stably arranged on the outer wall of the turbine main shaft, as Figures 1-2 and Figure 5 shown, the connecting mechanism includes two first mounting plates 6, two second mounting plates 7, two screw rods 8 and two turntables 9. The two first mounting plates 6 are both fixedly arranged on the side wall of one of the rectangular plates 3, the two second mounting plates 7 are both fixedly arranged on the side wall of the other rectangular plate 3, the two screw rods 8 are respectively movably sleeved inside the corresponding first mounting plates 6, one ends of the two screw rods 8 are respectively threadedly sleeved inside the corresponding second mounting plates 7, and the other ends of the two screw rods 8 are respectively fixedly connected to the corresponding turntables 9. By using the provided connecting mechanism, the two rectangular plates 3 can be connected, ensuring that the two rectangular plates 3 and the two arc-shaped sealing plates 4 can be stably arranged on the outer wall of the turbine main shaft.

[0028] And in order to fix multiple arc-shaped waterproof plates 2 to the side walls of the corresponding annular threaded plates 5, as Figures 1-4 shown, a plurality of bolts 10 are respectively movably sleeved inside each annular threaded plate 5, threaded holes are formed in the side walls of each arc-shaped waterproof plate 2, and one end of each bolt 10 is respectively threadedly sleeved inside the corresponding threaded hole. By using the provided plurality of bolts, the multiple arc-shaped waterproof plates 2 can be fixed to the side walls of the corresponding annular threaded plates 5.

[0029] And in order to improve the connection stability between two adjacent arc-shaped waterproof plates 2, as Figures 1-3 shown, two limiting rods 11 are fixedly arranged on the side walls of two of the arc-shaped waterproof plates 2, two limiting grooves are formed in the side walls of the other two arc-shaped waterproof plates 2, and one end of each limiting rod 11 is inserted into the corresponding limiting groove. By using the provided ones, the connection stability between two adjacent arc-shaped waterproof plates 2 can be improved.

[0030] And in order to ensure that the arc-shaped sealing plate 4 can have better sealing ability, as Figure 2 shown, each arc-shaped sealing plate 4 is a rubber plate, thus ensuring that the arc-shaped sealing plate 4 can have better sealing ability.

[0031] Finally, in order to ensure that the arc-shaped waterproof plate 2 can have better waterproof ability, as Figures 1-3 shown, each arc-shaped waterproof plate 2 is a polypropylene plate, thus ensuring that the arc-shaped waterproof plate 2 can have better waterproof ability.

[0032] Only some exemplary embodiments of the present utility model are described by way of illustration above. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. A water turbine main shaft sealing device, comprising a main shaft body (1) and a plurality of arc-shaped waterproof plates (2), characterized in that, Two rectangular plates (3) are provided on the outer wall of the spindle body (1). An arc-shaped installation groove is provided on the side wall of each rectangular plate (3). An arc-shaped sealing plate (4) is fixedly provided on the inner wall of each arc-shaped installation groove. Each arc-shaped sealing plate (4) is attached to the side wall of the spindle body (1). An external thread is provided on the outer wall of the spindle body (1). Two annular threaded plates (5) are threadedly sleeved on the outer wall of the spindle body (1). A plurality of arc-shaped waterproof plates (2) are respectively attached to the side walls of the corresponding annular threaded plates (5). A plurality of arc-shaped waterproof plates (2) are all attached to the outer wall of the spindle body (1). A plurality of arc-shaped waterproof plates (2) respectively match the two ends of the two arc-shaped sealing plates (4). A connection mechanism is provided outside the spindle body (1). The two rectangular plates (3) both match the connection mechanism.

2. The water turbine main shaft sealing device according to claim 1, characterized in that, The connection mechanism includes two first mounting plates (6), two second mounting plates (7), two screws (8) and two turntables (9). The two first mounting plates (6) are both fixedly provided on the side wall of one of the rectangular plates (3). The two second mounting plates (7) are both fixedly provided on the side wall of the other rectangular plate (3). The two screws (8) are respectively movably sleeved inside the corresponding first mounting plates (6). One end of each of the two screws (8) is threadedly sleeved inside the corresponding second mounting plate (7). The other ends of the two screws (8) are respectively fixedly connected to the corresponding turntables (9).

3. A water turbine main shaft sealing device according to claim 1, characterized in that, A plurality of bolts (10) are respectively movably sleeved inside each annular threaded plate (5). A threaded hole is provided on the side wall of each arc-shaped waterproof plate (2). One end of each bolt (10) is threadedly sleeved inside the corresponding threaded hole.

4. A water turbine main shaft sealing device according to claim 1, characterized in that, Two limiting rods (11) are fixedly provided on the side walls of two of the arc-shaped waterproof plates (2). Two limiting grooves are provided on the side walls of the other two arc-shaped waterproof plates (2). One end of each limiting rod (11) is inserted into the corresponding limiting groove.

5. A water turbine main shaft sealing device according to claim 1, characterized in that, Each arc-shaped sealing plate (4) is a rubber plate.

6. The water turbine main shaft sealing device according to claim 1, characterized in that, Each arc-shaped waterproof plate (2) is a polypropylene plate.

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