A seal arrangement for a runner and a runner assembly

Abstract

The application provides a sealing device of a runner and a runner set, the sealing device is used on the runner set, and the sealing device comprises a sealing piece, a fixing part, and an adjusting part; the sealing piece is in abutment with an end surface of the runner; the sealing piece is connected with a partition support through the fixing part; and the adjusting part adjusts the abutment degree of the sealing piece and the end surface of the runner through the fixing part. The adjustability of the sealing piece improves the sealing performance, improves the utilization rate of the sealing piece, is more convenient to install and debug, can be bent into any required shape, and has high universality.

Description

Technical Field

[0001] This invention relates to a sealing device, and more particularly to a sealing device for a dehumidifying impeller. Background Technology

[0002] Dehumidifier rotors are divided into multiple working zones due to different functional requirements, commonly including a treatment zone and a regeneration zone. Further zones may include pre-cooling and pre-heating zones. To prevent interference between these zones, sealing devices are typically used to ensure airtightness at the zone boundaries. However, existing sealing devices are often fixed in place, with non-adjustable gaps, and errors in the machining of the fixing holes and installation of the sealing devices themselves, resulting in poor sealing performance. It is difficult to precisely control the contact area and tightness between the sealing device and the rotor at every point, making installation and debugging cumbersome. The seals themselves are wear parts, prone to leakage due to continuous friction with the rotor, requiring frequent replacement, increasing time and material costs, and resulting in low seal availability. Existing seals require high flatness of both themselves and the rotor end face; abnormal protrusions on the surface can cause localized leakage in conventional seals. Furthermore, existing seals require custom mold production to accommodate different seal shapes, leading to high mold costs and poor adaptability. Summary of the Invention

[0003] To address the aforementioned deficiencies of the prior art, the present invention provides a sealing device for a turbine runner, used on a turbine runner unit, the turbine runner unit comprising a frame, a turbine runner mounted on the frame, the frame comprising a partitioning bracket to divide the turbine runner into multiple zones, and the sealing device comprising:

[0004] A sealing element, wherein a portion of the sealing element abuts against the end face of the rotating wheel.

[0005] The fixing part, wherein the sealing element is connected to the partition bracket via the fixing part.

[0006] The adjusting part adjusts the degree of contact between the seal and the end face of the rotating wheel through the fixing part.

[0007] Preferably, the adjusting part is provided with a plurality of adjusting nuts along the axial direction of the rotating wheel, and the adjusting nuts abut against the fixing part.

[0008] Preferably, the fixing part is provided with a plurality of adjusting grooves, the length direction of which is parallel to the axial direction of the rotating wheel. By rotating the adjusting nut, the fixing part can move along the axial direction of the rotating wheel within the range of the adjusting groove.

[0009] Preferably, the fixing part includes a groove, one end of the sealing member is engaged in the groove, and the other end abuts against the end face of the rotating wheel.

[0010] Preferably, the end of the seal that abuts against the end face of the rotating wheel is a hollow cylinder.

[0011] Preferably, the end of the seal that abuts against the end face of the rotary wheel is sheet-shaped.

[0012] Preferably, the fixing part is provided with a plurality of elastic elements along an axial direction parallel to the rotating wheel. The fixed end of the elastic element is fixed to the fixing part, and the free end contacts the end of the sealing element that abuts against the end face of the rotating wheel and applies an elastic force.

[0013] Preferably, the sealing element is an L-shaped sheet sealing element, the sealing element includes a first bending surface and a second bending surface, the first bending surface abuts against the plane of the rotating wheel, the second bending surface engages with the groove of the fixing part, and the free end of the elastic element abuts against the first bending surface of the sealing element.

[0014] Preferably, the sealing element is a polytetrafluoroethylene (PTFE) sealing element.

[0015] A turbine generator set includes a sealing device for the turbine as described above.

[0016] The beneficial effects of this invention are as follows: the contact degree between the seal and the end face of the rotating wheel is adjustable, accommodating machining errors of the fixing hole and errors generated during the installation of the sealing device, thus improving the final sealing effect; multiple adjustment parts are provided, allowing for local adjustment of each part of the sealing device without the need for overall adjustment; the adjusting nut allows for local fine-tuning, better controlling the contact area and tightness between the sealing device and the rotating wheel; when the seal wears and the gap between the seal and the end face of the rotating wheel increases, simply rotating the adjusting nut can compensate for the wear of the seal, eliminating the need for frequent replacement of the seal, reducing replacement time and material costs, and improving the utilization rate of the seal; it has higher compatibility and adaptability to the flatness errors of the seal itself and the end face of the rotating wheel; it can be bent into any required shape to adapt to different boundary shapes without the need for mold making; the elastic element in the adjustment part can automatically compensate for the gap caused by the wear of the seal; when dealing with sealing under complex conditions, it better automatically accommodates various errors without the need for manual adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a turbine generator unit with a sealing device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the sealing device of the present invention;

[0019] Figure 3 This is an exploded view of the sealing device of the present invention;

[0020] Figure 4 This is a schematic diagram of the fixing part of the present invention;

[0021] Figure 5 This is a cross-sectional view of a turbine generator unit with a sealing device according to the present invention;

[0022] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0023] Figure 7 for Figure 6 A schematic diagram of another embodiment;

[0024] Figure 8 This is a schematic diagram of another turbine unit with a sealing device according to the present invention;

[0025] In the picture,

[0026] 1. Frame; 2. Partition bracket; 3. Sealing device; 4. Sealing element; 5. Fixing part; 6. Adjusting part; 7. Adjusting nut; 8. Adjusting groove; 9. Slot; 10. Elastic element. Detailed Implementation

[0027] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] The present invention will now be described in detail with reference to the accompanying drawings. The description in this part is merely illustrative and explanatory, and should not be construed as limiting the scope of protection of the present invention.

[0029] Figure 1 This is a schematic diagram of a rotary turbine unit with a sealing device 3 according to the present invention. The core component of the rotary turbine unit is the rotor, which is composed of high-efficiency adsorption material and is usually disc-shaped. It rotates under external drive and is recyclable. The rotor is mounted on a frame 1, which includes a partition bracket 2 for partitioning the rotor. According to different functions, the rotor can be divided into a treatment zone and a regeneration zone. The treatment zone is mainly used to adsorb moisture in humid gas. After adsorption, it is transferred to the regeneration zone. The regeneration zone desorbs the absorbed moisture through high temperature, realizing recycling. On this basis, a pre-cooling zone can be added to lower the temperature of the high-temperature rotor in the regeneration zone, thereby improving the adsorption effect of the treatment zone. It is necessary to ensure proper sealing between different zones, especially at the boundaries of each zone, to prevent gas leakage and affect the normal operation of each zone.

[0030] This invention provides a sealing device 3 for a rotating wheel, such as... Figures 2 to 6It includes a seal 4, a fixing part 5, and an adjusting part 6.

[0031] The sealing element 4 abuts against the end face of the rotating wheel. The sealing element 4 is connected to the partition bracket 2 through the fixing part 5. The adjusting part 6 adjusts the degree of contact between the sealing element 4 and the end face of the rotating wheel through the fixing part 5. The sealing device 3 can cover all or part of the boundary of each zone.

[0032] In Embodiment 1, the sealing element 4 is a hollow cylinder with a flange extending along the outer periphery of the cylinder. The radial cross-section shape is similar to the figure-9. The cylindrical end of the sealing element 4 abuts against the end face of the rotating wheel. In this embodiment, the fixing part 5 is provided with a groove 9. The opening of the groove 9 faces the end face of the rotating wheel. The flange of the sealing element 4 is engaged in the groove 9. The fixing part 5 restricts the movement of the sealing element 4 along the axial direction of the rotating wheel.

[0033] The fixing part 5 is provided with multiple adjustment grooves 8. The length direction of the adjustment grooves 8 is parallel to the axial direction of the rotating wheel. Screws are inserted into the adjustment grooves 8 and connected to the partition bracket 2. This connection method makes the fixing part 5 fixed in the direction perpendicular to the contact surface between the partition bracket 2 and the fixing part 5. The fixing part 5 can move along the length direction of the adjustment grooves 8, that is, along the axial direction of the rotating wheel. The range of movement is within the range defined by the length direction of the adjustment grooves 8.

[0034] The adjustment of the fixing part 5 is achieved by the adjustment part 6. The adjustment part 6 is provided with a plurality of adjusting nuts 7 along the axial direction of the rotating wheel. The adjusting nuts 7 abut against the fixing part 5. By screwing the adjusting nuts 7 in and out, the position of the fixing part 5 relative to the end face of the rotating wheel can be adjusted, thereby adjusting the degree of contact between the sealing part 4 and the end face of the rotating wheel, including the contact area, the contact force, and the gap between the two.

[0035] like Figure 8 This is a schematic diagram of another turbine unit with a sealing device 3 according to the present invention. When the shape of the boundary to be sealed is different, the sealing device 3 can be bent into the required shape according to the requirements, without the need to open a mold for different shapes, and has high versatility.

[0036] The beneficial effects of this embodiment are that the contact degree between the seal 4 and the end face of the rotating wheel is adjustable, which is compatible with the machining error of the fixing hole and the error generated during the installation of the sealing device 3, thus improving the final sealing effect; multiple adjustment parts 6 are provided, so that each part of the sealing device 3 can be locally adjusted without the need for overall adjustment; the adjusting nut 7 can realize local fine adjustment, better control of the contact area and tightness between the sealing device 3 and the rotating wheel; when the seal 4 wears and the gap between it and the end face of the rotating wheel increases, simply rotating the adjusting nut 7 can compensate for the wear of the seal 4, eliminating the need for frequent replacement of the seal 4, reducing replacement time and material costs, and improving the utilization rate of the seal 4; it has higher compatibility and adaptability to the flatness error of the seal 4 itself and the end face of the rotating wheel; it can be bent into any required shape to adapt to different boundary shapes without the need for mold opening.

[0037] The second embodiment of the present invention, as follows: Figure 7 For the sake of brevity, the same parts will not be repeated. In this embodiment, an L-shaped sheet seal 4 is used. The L-shaped sheet seal 4 is composed of a first bent surface and a second bent surface. The first bent surface abuts against the plane of the rotating wheel, and the second bent surface engages with the groove 9 of the fixing part 5. A flange extends from the bottom of the groove 9 and is parallel to the end face of the rotating wheel, so that the fixing part 5 is F-shaped. The fixing part 5 also includes an elastic element 10. The fixed end of the elastic element 10 is fixedly installed on the flange. The free end of the elastic element 10 contacts the end of the seal 4 that abuts against the end face of the rotating wheel and applies an elastic force. That is, the free end of the elastic element 10 abuts against the first bent surface to ensure the degree of contact between the first bent surface and the end face of the rotating wheel and to ensure the sealing performance. When the seal 4 wears, the elastic element 10 releases the elastic pressure and pushes the seal 4 towards the end face of the rotating wheel to compensate for the gap caused by wear. When the flatness of the seal 4 itself or the flatness of the end face of the rotating wheel is not good, the different elastic deformations of the elastic element 10 can adapt well to various gaps.

[0038] The beneficial effects of the present invention are that the adjustment part 6 has added an elastic element 10, and the elastic deformation can automatically compensate for the gap caused by wear of the sealing element 4; when dealing with sealing under complex conditions, it can better automatically accommodate various errors without manual adjustment.

[0039] The sealing element 4 in the sealing device 3 provided by the present invention is a polytetrafluoroethylene (PTFE) seal. The working temperature of the rotor varies greatly. The processing zone is usually at a lower temperature for better dehumidification, while the rotor needs to undergo high-temperature desorption when it rotates to the regeneration zone. The PTFE seal can adapt to a wide range of temperature changes and has weather resistance, aging resistance, and long service life. The PTFE seal is also non-adhesive, with a smooth surface that does not easily adhere to any substance, reducing friction between the seal 4 and the rotor and making it less prone to wear.

[0040] In the above embodiments, the shape of the sealing element 4 can be either 9-shaped or L-shaped, or it can be P-shaped or B-shaped as in the prior art; the fixing part 5 and the adjusting part 6 can also be fitted with screws, gears, buckles, etc., as long as they meet the principle of the present invention.

[0041] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A sealing device for a turbine runner, used on a turbine runner assembly, the turbine runner assembly comprising a frame, a turbine runner mounted on the frame, the frame comprising a partitioning bracket to divide the turbine runner into multiple zones, characterized in that: The sealing device includes: A sealing element, wherein a portion of the sealing element abuts against the end face of the rotating wheel. The fixing part, wherein the sealing element is connected to the partition bracket via the fixing part. The adjusting part adjusts the degree of contact between the sealing element and the end face of the rotating wheel through the fixing part; the adjusting part is provided with a plurality of adjusting nuts along the axial direction of the rotating wheel, and the adjusting nuts abut against the fixing part; The fixing part is provided with multiple adjustment grooves, the length direction of which is parallel to the axis of the rotating wheel. By rotating the adjusting nut, the fixing part can move along the axis of the rotating wheel within the range of the adjustment groove. The fixing part includes a slot, one end of the sealing member is engaged in the slot, and the other end abuts against the end face of the rotating wheel; The fixing part is provided with a plurality of elastic elements along an axial direction parallel to the rotating wheel. The fixed end of the elastic element is fixed to the fixing part, and the free end contacts the end of the sealing element that abuts against the end face of the rotating wheel and applies an elastic force. The sealing element is an L-shaped sheet sealing element, which includes a first bent surface and a second bent surface. The first bent surface abuts against the plane of the rotating wheel, and the second bent surface engages with the groove of the fixing part. The free end of the elastic element abuts against the first bent surface of the sealing element.

2. The sealing device for the rotating wheel according to claim 1, characterized in that: The sealing element is a polytetrafluoroethylene (PTFE) sealing element.

3. A turbine generator unit, characterized in that: A sealing device comprising the impeller as described in any one of claims 1 to 2.

Images