Double water internal cooling camera rotor water outlet support

Abstract

The invention discloses a double water internal cooling phase regulator rotor water outlet support, comprising a water outlet support and a rotor shaft, wherein the rotor shaft is rotatably connected to the water outlet support, a sealing mechanism is provided at the connection between the water outlet support and the rotor shaft, the sealing mechanism comprises a first sealing ring, a first annular groove is provided on the water outlet support, the inner end of the first sealing ring is sleeved on the rotor shaft, and the outer end is radially movable in the first annular groove. The double water internal cooling phase regulator rotor water outlet support has a simple and reasonable structure, a tight seal, can avoid water throwing and improve safety.

Description

Technical Field

[0001] The invention relates to the technical field of a double-water internally-cooled phase regulator assembly, and in particular to a double-water internally-cooled phase regulator rotor water outlet support. Background Art

[0002] At present, the sealing between the cooling water outlet support in the rotor of the new generation of double-water internally cooled phase-shifting units and the rotating rotor shaft has always been a technical problem. When the phase-shifting unit is in operation, the cooling water in the rotor coil flows from the outlet hole 8 on the rotor shaft 2 to the rotor outlet support 1, then flows from the outlet support 1 to the water trough 9, and finally flows to the rotor water tank. The rotor rotates at a high speed of 3000r / min, so a certain gap must be maintained between the outlet support and the rotor shaft to prevent the rotor shaft from being damaged by friction. The water pressure in the outlet support is relatively high, and the gap between the outlet support and the rotor is not sealed tightly, which will cause a large amount of water to be thrown off, seriously affecting the safe operation of the motor unit. The sealing at this gap is a technical problem. The current sealing technology route designs two fixed sealing rings, which cannot float up and down, resulting in uneven gaps when the vibration is large, resulting in a large amount of water leakage at the gap. This problem has not been effectively solved. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a sealing device for a water outlet support of a double-water internally cooled phase-shifting machine rotor which has a simple and reasonable structure, is tightly sealed, can avoid water throwing and improves safety.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A double-water internally cooled phase regulator rotor water outlet support comprises a water outlet support and a rotor shaft, wherein the rotor shaft is rotatably connected to the water outlet support, a sealing mechanism is provided at the connection between the water outlet support and the rotor shaft, the sealing mechanism comprises a first sealing ring, a first annular groove is provided on the water outlet support, an inner end of the first sealing ring is sleeved on the rotor shaft, and an outer end is radially movably provided in the first annular groove.

[0006] As a further improvement of the above technical solution:

[0007] The cross section of the first sealing ring is in a convex shape.

[0008] The difference between the diameter of the annular bottom surface of the first annular groove and the outer diameter of the first sealing ring is less than or equal to 0.3 mm.

[0009] The sealing mechanism also includes a second sealing ring, the inner end of the second sealing ring is sleeved on the rotor shaft, the outer end of the second sealing ring is fixed on the water outlet support, and the second sealing ring is located outside the first sealing ring.

[0010] A water return chamber is provided between the first sealing ring and the second sealing ring, and a water return channel is provided below the water return chamber on the water outlet support, wherein the water return channel connects the water return chamber with the inner space of the water outlet support.

[0011] The outer end of the second sealing ring is detachably fixed on the water outlet support.

[0012] The inner end of the second sealing ring is axially provided with a plurality of sealing toothed rings.

[0013] The sealing mechanism also includes a third sealing ring, the inner end of the third sealing ring is sleeved on the rotor shaft, and the outer end of the third sealing ring is arranged on the water outlet support.

[0014] A mounting plate is detachably fixed on the water outlet support, a mounting hole is provided on the mounting plate, a second annular groove is provided around the mounting hole, and the outer end of the third sealing ring is radially movably arranged in the second annular groove.

[0015] The water outlet support is detachably provided with a water retaining cover, and the rotor shaft is arranged on the water retaining cover through a sealing mechanism.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The double water internally cooled phase regulator rotor water outlet support of the present invention comprises a water outlet support and a rotor shaft, wherein the rotor shaft is rotatably connected to the water outlet support, and a sealing mechanism is provided at the connection between the water outlet support and the rotor shaft, wherein the sealing mechanism comprises a first sealing ring, and a first annular groove is provided on the water outlet support, wherein the inner end of the first sealing ring is sleeved on the rotor shaft, and the outer end is radially movable in the first annular groove. When the rotor shaft rotates, the first sealing ring can move radially in the first annular groove along with the vibration of the rotor shaft, thereby avoiding the increase of the gap between the inner end face of the first sealing ring and the outer peripheral surface of the rotor shaft due to the vibration of the rotor shaft, thereby causing the phenomenon of water throwing, and improving the sealing performance and safety. The double water internally cooled phase regulator rotor water outlet support has a simple and reasonable structure, a tight seal, and can avoid water throwing and improve safety.

[0018] Furthermore, a second sealing ring is provided on the outer side of the first sealing ring, a water return chamber is provided between the first sealing ring and the second sealing ring, and a water return channel is provided below the water return chamber on the water outlet support. After cooling water is thrown out through the first sealing ring, the thrown out cooling water enters the water return chamber, falls under its own gravity, and then flows back to the inside of the water outlet support 1 from the water return channel to prevent water from accumulating in the water return chamber and being thrown out through the second sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the water outlet support of the rotor of the double-water internally cooled phase regulator of the present invention.

[0020] Figure 2It is a structural schematic diagram of the sealing mechanism of the water outlet support of the rotor of the double-water internally cooled phase regulator of the present invention.

[0021] The symbols in the figure represent:

[0022] 1. Water outlet support; 11. Water retaining cover; 2. Rotor shaft; 3. Sealing mechanism; 31. First sealing ring; 32. Second sealing ring; 321. Sealing gear ring; 33. Third sealing ring; 4. First annular groove; 5. Return water chamber; 6. Return water channel; 7. Mounting plate; 71. Mounting hole; 72. Second annular groove; 8. Water outlet hole; 9. Water accumulation groove. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 and Figure 2 An embodiment of the double water internal cooling condenser rotor water outlet support of the present invention is shown. The double water internal cooling condenser rotor water outlet support comprises a water outlet support 1 and a rotor shaft 2. The rotor shaft 2 is rotatably connected to the water outlet support 1. A sealing mechanism 3 is provided at the connection between the water outlet support 1 and the rotor shaft 2. The sealing mechanism 3 comprises a first sealing ring 31. A first annular groove 4 is provided on the water outlet support 1. The inner end of the first sealing ring 31 is sleeved on the rotor shaft 2, and the outer end is radially movable in the first annular groove 4. When the rotor shaft 2 rotates, the first sealing ring 31 can move radially in the first annular groove 4 with the vibration of the rotor shaft 2, thereby avoiding the increase of the gap between the inner end surface of the first sealing ring 31 and the outer peripheral surface of the rotor shaft 2 due to the vibration of the rotor shaft 2, thereby causing the phenomenon of water throwing, and improving the sealing and safety. The double water internal cooling condenser rotor water outlet support has a simple and reasonable structure, a tight seal, and can avoid water throwing and improve safety.

[0025] In this embodiment, the cross section of the first sealing ring 31 is in a convex shape. Specifically, the outer end of the first sealing ring 31 is small and the inner end is large. The outer end of the first sealing ring 31 is inserted into the first annular groove 4. The difference between the diameter of the annular bottom surface of the first annular groove 4 and the outer diameter of the first sealing ring 31 is less than or equal to 0.3 mm. The difference a between the width of the first annular groove 4 and the width of the outer end of the first sealing ring 31 satisfies 0.1≤a≤0.2, so that a water film with extremely strong stability is formed between the side surface of the first sealing ring 31 and the side surface of the first annular groove 4.

[0026] In this embodiment, the sealing mechanism 3 further includes a second sealing ring 32, the inner end of the second sealing ring 32 is sleeved on the rotor shaft 2, the outer end is fixed on the water outlet support 1, and the second sealing ring 32 is located outside the first sealing ring 31. Specifically, the second sealing ring 32 is made of aluminum, and after cooling water is thrown out through the first sealing ring 31, the second sealing ring 32 forms a second sealing barrier, which is used to further increase the sealing effect and prevent the cooling water from being thrown out.

[0027] In this embodiment, a water return chamber 5 is provided between the first sealing ring 31 and the second sealing ring 32, and a water return channel 6 is provided below the water return chamber 5 on the water outlet support 1, and the water return channel 6 connects the water return chamber 5 with the internal space of the water outlet support 1. After the cooling water is thrown out through the first sealing ring 31, the thrown out cooling water enters the water return chamber 5, falls under the action of its own gravity, and then flows back to the inside of the water outlet support 1 from the water return channel 6, so as to prevent the formation of water accumulation in the water return chamber 5 and be thrown out through the second sealing ring 32.

[0028] The main function of the return water chamber 5 and the return water channel 6 is to return part of the water flowing through the first sealing ring 31 to the water outlet support 1. In the water outlet support 1, the water is first blocked by the first sealing ring 31 and the second sealing ring 32 close to the rotor shaft 2, and only a small amount of water reaches the return water chamber 5 along the shaft surface. Under the action of huge centrifugal force, the water in the return water chamber 5 returns to the water outlet support 1 through the return water channel 6.

[0029] In this embodiment, the outer end of the second sealing ring 32 is detachably fixed on the water outlet support 1. Specifically, the outer end of the second sealing ring 32 can be fixed on the water outlet support 1 by bolts, so as to facilitate the disassembly and assembly of the second sealing ring 32.

[0030] In this embodiment, the inner end of the second sealing ring 32 is provided with a plurality of sealing toothed rings 321 along the axial direction. Specifically, the sealing toothed rings 321 are evenly spaced, that is, adjacent sealing toothed rings 321 form a buffer zone. In case a small amount of cooling water is thrown out from the inner side of the second sealing ring 32, the buffer zone can play a role in caching the cooling water. The sealing toothed rings 321 play a role of waterproofing from the inside to the outside, and the buffer zone plays a role of caching from the inside to the outside, further improving the sealing effect. The installation gap between the inner end surface of the sealing toothed ring 321 and the outer peripheral surface of the rotor shaft 2 is set to d, and d satisfies 0.05≤d≤0.1, so as to form a water film with strong stability at the gap.

[0031] In this embodiment, the sealing mechanism 3 further includes a third sealing ring 33, the inner end of which is sleeved on the rotor shaft 2, and the outer end of which is arranged on the water outlet support 1. The third sealing ring 33 forms a first waterproof layer on the inner side of the first sealing ring 31, and the impact force of the thrown water passing through the first sealing ring 31 is reduced, thereby increasing the difficulty of the thrown water passing through the second sealing ring 32 to form a second waterproof layer.

[0032] In this embodiment, a mounting plate 7 is detachably fixed on the water outlet support 1, and a mounting hole 71 is provided on the mounting plate 7. A second annular groove 72 is provided around the mounting hole 71, and the outer end of the third sealing ring 33 is radially movable in the second annular groove 72. The third sealing ring 33 has the same effect as the first sealing ring 31 through the above-mentioned installation, that is, when the rotor shaft 2 rotates, the third sealing ring 33 can move radially in the second annular groove 72 along with the vibration of the rotor shaft 2, thereby avoiding the increase of the gap between the inner end surface of the third sealing ring 33 and the outer peripheral surface of the rotor shaft 2 due to the vibration of the rotor shaft 2, thereby causing the phenomenon of water throwing, and improving the sealing performance and safety. In addition, the mounting plate 7 is detachably fixed on the mounting plate 7, such as being fixed on the mounting plate 7 by bolts, so that it is easy to disassemble and assemble.

[0033] In this embodiment, the water outlet support 1 is detachably provided with a water retaining cover 11, the rotor shaft 2 is arranged on the water retaining cover 11 through a sealing mechanism 3, the outer end of the second sealing ring 32 is fixed on the water retaining cover 11, the first annular groove 4 is on the water retaining cover 11, and the mounting plate 7 is fixed on the water retaining cover 11.

[0034] The advantage of the present invention is that three seals are designed to ensure that the internal cooling water in the water outlet support 1 is completely sealed. The first sealing ring 31 can ensure that the gap with the rotor shaft 2 is automatically adjusted to a designed range. The water film formed between the first sealing ring 31 and the first annular groove 4 and the water film formed between the third sealing ring 33 and the second annular groove 72 play a double-layer sealing and decompression role. Under the decompression sealing effect of the two layers of sealing, only a very small amount of water can pass through and enter the return water chamber 5. The second sealing ring 32 has four sealing tooth rings 321, which can form four sealing water films when rotating, thereby ensuring that the internal cooling water is completely sealed to achieve stable operation of the phase shifter.

[0035] In this embodiment, the second sealing ring 32 is made of high-strength wear-resistant aluminum alloy. The inner ends of the first sealing ring 31 and the third sealing ring 33 are made of high-temperature and high-pressure resistant graphite.

[0036] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A double water internally cooled phase regulator rotor water outlet support, comprising a water outlet support (1) and a rotor shaft (2), wherein the rotor shaft (2) is rotatably connected to the water outlet support (1), and a sealing mechanism (3) is provided at the connection between the water outlet support (1) and the rotor shaft (2), characterized in that: The sealing mechanism (3) comprises a first sealing ring (31), the water outlet support (1) is provided with a first annular groove (4), the inner end of the first sealing ring (31) is sleeved on the rotor shaft (2), and the outer end is radially movable in the first annular groove (4); the sealing mechanism (3) further comprises a second sealing ring (32), the inner end of the second sealing ring (32) is sleeved on the rotor shaft (2), the outer end is fixed on the water outlet support (1), and the second sealing ring (32) is located at the first sealing ring The outer side of the ring (31); a return water chamber (5) is provided between the first sealing ring (31) and the second sealing ring (32); the water outlet support (1) is provided with a return water channel (6) below the return water chamber (5); the return water channel (6) connects the return water chamber (5) with the internal space of the water outlet support (1); the sealing mechanism (3) further comprises a third sealing ring (33); the inner end of the third sealing ring (33) is sleeved on the rotor shaft (2), and the outer end is provided on the water outlet support (1).

2. The double water internally cooled phase regulator rotor water outlet support according to claim 1, characterized in that: The cross section of the first sealing ring (31) is in the shape of a convex letter.

3. The double water internally cooled phase regulator rotor water outlet support according to claim 1, characterized in that: The difference between the diameter of the annular bottom surface of the first annular groove (4) and the outer diameter of the first sealing ring (31) is less than or equal to 0.3 mm.

4. The double water internally cooled phase regulator rotor water outlet support according to claim 1, characterized in that: The outer end of the second sealing ring (32) is detachably fixed on the water outlet support (1).

5. The double water internally cooled phase regulator rotor water outlet support according to claim 1, characterized in that: The inner end of the second sealing ring (32) is provided with a plurality of sealing toothed rings (321) along the axial direction.

6. The double water internally cooled phase regulator rotor water outlet support according to claim 1, characterized in that: A mounting plate (7) is detachably fixed to the water outlet support (1), a mounting hole (71) is provided on the mounting plate (7), a second annular groove (72) is provided around the mounting hole (71), and the outer end of the third sealing ring (33) is radially movably disposed in the second annular groove (72).

7. The double water internally cooled phase regulator rotor water outlet support according to any one of claims 1 to 6, characterized in that: The water outlet support (1) is detachably provided with a water retaining cover (11), and the rotor shaft (2) is arranged on the water retaining cover (11) via a sealing mechanism (3).

Images