CN218888277U - Water leakage prevention device for water inlet support of generator - Google Patents

Abstract

The utility model relates to a generator support leak protection water installation of intaking, including annular connecting housing, connecting housing's left end cover establishes outside the pivot, connecting housing's right-hand member cover establish outside the shell, and with shell fixed connection, wherein, connecting housing and pivot contact department are provided with seal structure. The utility model is suitable for a current generator support of intaking has solved the problem that the support of intaking leaks to get rid of water effectively.

Description

Water leakage prevention device for water inlet support of generator

Technical Field

The utility model relates to a leak protection water installation, more specifically say, it relates to a generator support leak protection water installation of intaking.

Background

The rotor water inlet shaft sleeve of the large-scale generator set is also called a water inlet support and is a dynamic and static combination part of a cooling water inlet pipe of a generator rotor and a rotating shaft of a generator; in order to prevent water leakage, packing is generally adopted for sealing, the periphery of the shell is covered by a shell with a water discharge pipe, and the accidents that water overflows to the outside along a shaft to influence the work of a generator excitation carbon brush, the short-circuit fault tripping of an exciter and the shutdown of a generator set are caused are prevented; if a large amount of water leaks or throws away water, the water leaks to other electrical equipment such as an outlet port on the lower layer of the engine, so that grounding and short-circuit faults of lines, equipment and the like of the generator are caused, and the accidents of tripping of the short-circuit fault of the generator and shutdown of the generator set are caused. Causing great influence on the safe and economic operation of the power plant. In actual operation, especially the generating set that operating time is longer, for the emergence that prevents to leak the water knockout phenomenon, especially in the time of the variable operating mode, often have operation and maintainer to squat here and guard to strengthen the guardianship, prevent the emergence of leaking the water knockout, interrupt the safety in production record.

In the existing structure, except for adjusting the tightness of the filler to adjust the water leakage amount, no other sealing component is used for preventing the water leakage and the water throwing. Due to factors such as abrasion and vibration, the sealing degree of materials is reduced, and the time and the working condition are changed, so that the water leakage amount is changed at any time, the working strength and the psychological pressure of operating personnel of a power plant are increased, and the defect is a great hidden danger of safe and economic operation of the power plant.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a generator support leak protection water installation of intaking is applicable to current generator support of intaking, has solved the problem that support department's water of intaking gets rid of from the shell in the same direction as changeing the axial compressor effectively.

The above technical object of the present invention can be achieved by the following technical solutions:

the utility model provides a generator support leak protection water installation that intakes, includes annular connecting shell, connecting shell's left end cover is established outside the pivot, connecting shell's right-hand member cover is established outside the shell, and is connected with the shell, and wherein, connecting shell and pivot contact department are provided with seal structure.

In one embodiment, the sealing structure is annular and is sleeved outside the rotating shaft, a plurality of groups of parallel sealing rings are arranged on the inner wall of the sealing structure along the circumferential direction, and a plurality of groups of parallel annular sealing teeth are arranged on the inner wall of each sealing ring along the axial direction.

In one embodiment, an annular drainage cavity is arranged between two adjacent sealing rings, and the drainage cavity is externally connected with a drainage pipe. The water flow firstly enters between the sealing teeth of the outer sealing ring, water between the sealing teeth is thrown away under the driving of the rotating shaft to form a water ring, the pressure of the water ring is greater than the pressure of the inlet water, the effect of preventing the continuous inlet water is achieved, a small part of water permeates into the drainage cavity along the rotating shaft, and is accumulated at the bottom of the drainage cavity and drained away through the drainage hole; when the external water quantity is increased, water continuously infiltrates into the inner sealing ring along the rotating shaft, and a water ring is formed in the inner sealing ring again to prevent water from entering.

In one embodiment, a plurality of connecting parts are uniformly arranged on the side surface of the innermost and/or outermost sealing ring along the circumferential direction, a wear-resistant elastic brush is fixedly arranged on each connecting part, one end of each elastic brush is in contact with the rotating shaft, and the other end of each elastic brush is fixedly connected with each connecting part _， And can adjust the distance of brush body and axle from top to bottom, rotate the in-process at the pivot, relative rotation takes place for elastic brush and pivot, and elastic brush forms a manger plate ring on the pivot surface, because the elasticity of elastic brush self, has formed a strong sealing strip of antidetonation kinetic energy, prevents that the generator rotor cooling water from revealing the back out of control.

In one embodiment, the elastic brush is formed by overlapping a plurality of parallel brush bodies, the number of the brush bodies is preferably 3-5, and the distance between the adjacent brush bodies is preferably 0.01-3mm.

To sum up, the utility model discloses following beneficial effect has:

the utility model discloses pivot and shell department are established to the cover, do not destroy the structure of current generator support of intaking, and installation simple to use prevents leaking the emergence of getting rid of the water phenomenon effectively, the utility model discloses an elasticity brush rotates the in-process in the pivot and forms the strong sealing strip of manger plate ring sum anti-seismic power, still can play the effect that leak protection water got rid of water under the state of pivot vibrations, has solved the defect of generator support of intaking effectively.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is another schematic structural diagram of the present invention.

In the figure: 1-rotating shaft, 2-shell, 3-connecting shell, 4-sealing structure, 5-sealing ring, 6-sealing tooth, 7-drainage cavity, 8-connecting part and 9-brush body.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.

The utility model provides a generator support leak protection water installation that intakes can use with current generating set support cooperation that intakes, does not destroy current support structure of intaking. As shown in fig. 1, the utility model discloses an annular connects casing 3, as shown in fig. 1 do the utility model discloses an inside cross-section schematic diagram, wherein shell 2 all shows first half with pivot 1, and pivot 1 passes shell 2 and pivot 1 can the free rotation for shell 2, like the visual angle of fig. 1, the left end cover of connecting casing 3 is established outside pivot 1, and the right-hand member cover of connecting casing 3 is established outside shell 2, and with shell 2 fixed connection, wherein, it is provided with seal structure 4 with pivot 1 contact department to connect casing 3, and it oozes along pivot 1 to reduce water. The following description is directed to the sealing structure 4 at the rotating shaft 1, a mirror-inverted structure of which may be a preferred embodiment, as shown in fig. 2. As shown in fig. 1, the inner diameters of the sockets at the two ends of the connecting shell 3 are different, as shown in the view angle of the drawing, the inner diameter of the sealing structure 4 at the left socket interface is the same as the outer diameter of the rotating shaft 1, and as the connecting shell 3 has a certain width, the left end of the connecting shell 3 can move along the axial direction of the shell 2, so that the positions of the connecting shell 3 on the rotating shaft 1 and the shell 2 can be adjusted.

As shown in fig. 1, in the utility model, the sealing structure 4 is ring-shaped, the cover is located outside the pivot 1, the inner wall of the sealing structure 4 is provided with the parallel sealing ring 5 of multiunit along circumference, as shown in fig. 1, the cross-section at the position that the sealing ring 5 contacts with the pivot 1 is parallel dentate, it is easy to understand, the inner wall of each sealing ring 5 sets up the parallel annular sealing tooth 6 of multiunit along the axial, as shown in fig. 1 visual angle, the cross-section of each sealing ring 5 shows parallel dentate, the number of teeth of sealing tooth 6 is preferably 3-4, the distance of adjacent tooth is 0.1-5mm, preferably, the distance of adjacent tooth is 0.15-3mm, in the same sealing ring 5, the difference in height of adjacent sealing tooth 6 is 0.1-1mm.

The utility model discloses in, sealing ring 5 is two sets of to use figure 1 and 2 visual angles as the benchmark, and sealing ring 5 on the left side all is the external seal ring, and sealing ring 5 on the right all is the internal seal ring, is located the inside of connecting casing 3, sets up annular drainage chamber 7 between external seal ring 5 and the internal seal ring 5, and there is the external drain pipe in outlet drainage chamber 7 lower part. With the view angle of fig. 2 as a reference, from right to left is equivalent to from inside to outside, water flows are positioned between the rotating shaft 1 and the shell 2 and overflow out, the inner diameter of the sealing ring 5 is the same as the outer diameter of the rotating shaft 1, the sealing ring 5 is not contacted with the rotating shaft 1 through the sealing teeth 6, the rotating shaft 1 can still rotate freely, the water flows firstly enter between the sealing teeth 6 of the inner sealing ring, water between the sealing teeth 6 is thrown away under the driving of the rotating shaft 1 to form a water ring, the pressure of the water ring is greater than that of inlet water, the effect of preventing the continuous inlet water is achieved, a small part of water permeates into the drainage cavity 7 along the rotating shaft 1, and the water accumulated at the bottom of the drainage cavity 7 is drained away through the drainage pipe; when the external water quantity is increased, water continuously permeates into the outer sealing ring along the rotating shaft 1, and a water ring is formed in the outer sealing ring again to prevent water from entering.

Further, take fig. 1 as an example, the medial surface of inner seal ring evenly sets up a plurality of connecting portion 8 along circumference, connecting portion 8 is fixed to set up wear-resisting elastic brush, the one end and the contact of pivot 1 of elastic brush, the other end and the connecting portion 8 detachably of elastic brush are connected, the quantity of elastic brush can increase or reduce, in pivot 1 rotation in-process, elastic brush and pivot 1 take place relative rotation, elastic brush forms a manger plate ring on pivot 1 surface, play and stop water and flow along the axle, in addition, because the elasticity of elastic brush self, a strong sealing strip of anti-seismic kinetic energy has been formed, it is out of control after preventing generator rotor cooling water from revealing.

Further, taking fig. 2 as an example, a plurality of connecting portions 8 are also uniformly arranged on the outer side surface of the outer sealing ring along the circumferential direction, which is not shown in the drawing, a wear-resistant elastic brush is fixedly arranged on the connecting portion 8, one end of the elastic brush is in contact with the rotating shaft 1, the other end of the elastic brush is detachably connected with the connecting portion 8, the distance between the brush body and the shaft can be adjusted, and the number of the elastic brushes can be increased or decreased.

Taking the view angle of fig. 1 as an example, water flows outwards from the elastic sealing ring, the sealing teeth, the drainage cavity and the sealing teeth in sequence. The utility model discloses in, mainly through the contact of elasticity brush and pivot 1, sealing ring 5 adopts wear-resisting hard material to make, for example metal material, sealing ring 5's sealed tooth 6 and pivot 1 contactless, the distance between sealed tooth 6 and the pivot 1 is 0,15-2mm, the rotation of pivot 1 is not influenced, and can prevent that the rotation of pivot 1 from damaging sealed tooth 6, space formation water ring through between the sealed tooth 6 realizes sealedly, and the elasticity brush plays the effect of manger plate ring when pivot 1 rotates, further improves sealing performance.

In the utility model, the elastic brush is formed by overlapping a plurality of parallel brush bodies 9, the number of the brush bodies 9 is preferably 3-5, and the distance between the adjacent brush bodies 9 is preferably 0.01-3mm.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a generator support leak protection water installation that intakes, its characterized in that includes annular connecting casing (3), the left end cover of connecting casing (3) is established outside pivot (1), the right-hand member cover of connecting casing (3) is established outside shell (2), and with shell (2) fixed connection, wherein, the department of connecting casing (3) and pivot (1) contact is provided with seal structure (4).

2. The generator water inlet support anti-leakage device according to claim 1, wherein the sealing structure (4) is annular and is sleeved outside the rotating shaft (1), the inner wall of the sealing structure (4) is provided with a plurality of groups of parallel sealing rings (5) along the circumferential direction, and the inner wall of each sealing ring (5) is provided with a plurality of groups of parallel annular sealing teeth (6) along the axial direction.

3. The generator water inlet support anti-leakage device according to claim 2, characterized in that an annular drainage cavity (7) is arranged between two adjacent sealing rings (5), and the drainage cavity (7) is provided with a drainage port externally connected with a drainage pipe.

4. The generator water inlet support anti-leakage device as claimed in claim 2, wherein the side surface of the sealing ring (5) is uniformly provided with a plurality of connecting parts (8) along the circumferential direction, the connecting parts (8) adjust the position of the wear-resistant elastic brush, one end of the elastic brush is in contact with the rotating shaft (1), and the number of the elastic brushes can be increased or decreased.

5. Generator water intake support leak protection water installation according to claim 4, characterised in that said elastic brush is composed of a plurality of parallel brush bodies (9) superimposed.

6. The generator water intake support water leakage prevention device as claimed in claim 5, wherein the interval between adjacent brush bodies (9) is 0.01-3mm.

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