CN207161245U - A kind of vertical hydrogenerator bearing seal structure - Google Patents

Abstract

It the utility model is related to a kind of vertical hydrogenerator bearing seal structure, the rotatable parts being connected including bearing and with the bearing seal, the bearing includes bearing cap and the oil collecting ring inside bearing cap, cooperation corresponding with the oil collecting ring is provided with disc on the rotatable parts, the disc follows the rotatable parts to rotate and under the influence of centrifugal force gets rid of the lubricating oil being adhered on the rotatable parts in the oil collecting ring, a kind of vertical hydrogenerator bearing seal structure provided by the utility model, oozing out for lubricating oil at bearing seal can be prevented, and can prevents the spilling of mist of oil at bearing seal.

Description

A kind of vertical hydrogenerator bearing seal structure

Technical field

A kind of vertical hydrogenerator bearing seal structure is the utility model is related to, is mainly used in vertical hydrogenerator The sealing of bearing oil groove.

Background technology

Bearing of hydraulic generator typically uses self-lubricating plain bearing, and bearing liner is infiltrated in lubricating oil.Therefore in oil groove High-order steam turbine oil is all there are, in unit operation, thrust collar and runner plate outer wall can drive viscous quiet oil motion, lubricating oil Because the effect of centrifugal force gushes height to oil groove outer wall, agitation, the periphery for splashing to rotatable parts is hit, cause lubricating oil from bearing The seal clearance of lid oozes out along the periphery of rotatable parts.

Pasta agitation, hits and splashed, can produce a large amount of bubbles, bubble is quick-fried because the effect of centrifugal force gushes height to oil groove outer wall Split to form mist of oil；Tiling oil film local temperature is higher, and lubricating oil vaporizes to form mist of oil, if poorly sealed at bearing cap, mist of oil Overflowed easily at bearing cap sealing, form substantial amounts of grease on generator surface and collector ring brush holder room, influence collector ring brush The use of frame, increase the workload of unit regular maintenance.

Utility model content

Based on this, it is necessary in view of the above-mentioned problems, providing a kind of vertical hydrogenerator bearing seal structure, can prevent Lubricating oil oozes out at bearing seal, and and can prevents the spilling of mist of oil at bearing seal.

A kind of vertical hydrogenerator bearing seal structure, including bearing and the rotation section that is connected with the bearing seal Part, the bearing include bearing cap and the oil collecting ring inside bearing cap, relative with the oil collecting ring on the rotatable parts What should be coordinated is provided with disc, and the disc follows the rotatable parts to rotate and will be adhered under the influence of centrifugal force Lubricating oil on the rotatable parts is got rid of in the oil collecting ring.

Above-mentioned a kind of vertical hydrogenerator bearing seal structure, on the basis that bearing and rotatable parts are tightly connected On, increase a disc on rotatable parts newly, while disc follows the rotatable parts to rotate, under the influence of centrifugal force will The lubricating oil being adhered on rotatable parts gets rid of in the oil collecting ring inside bearing cap, then is recycled to by return port in oil groove, reaches To the purpose for preventing lubricating oil fluid and mist of oil from revealing simultaneously.

In one of the embodiments, the disc is arranged on the rotatable parts, and outside the rotatable parts A step is formed on disc, the disc is welded to connect with the rotatable parts or the disc and the rotatable parts It is integrally formed；When the cylindrical adhesion lubricating oil of rotatable parts and when being climbed up along the face of cylinder, disc forms a step, lubrication The route that oil is climb is blocked, and the lubricating oil of adhesion is concentrated at disc, and disc follows rotatable parts to rotate, therefore Oil-collecting at disc can be dumped into the oil collecting ring inside bearing cap under the influence of centrifugal force, then be recycled to by return port In oil groove, reached and meanwhile prevent lubricating oil fluid and mist of oil leakage purpose.

In one of the embodiments, the bearing cap on the faying face of the rotatable parts with being provided with multiple-sealed ring Groove, forms similar mazy sealing structure, and mist of oil, therefore can by that can produce throttle effect during the gap in tortuous labyrinth Reach the purpose of mist of oil Drain Resistance.

In one of the embodiments, in order to further prevent the leakage of mist of oil, improve between bearing and rotatable parts Sealing, be provided with airtight and watertight padding groove, the airtight and watertight padding at the top of the faying face of the bearing cap and the rotatable parts Encapsulant be filled with inside groove, and is fixed and clamped by the fixing device on the bearing cap, the encapsulant and Blind-mate between the bearing and rotatable parts.

In one of the embodiments, the encapsulant is industrial felt, industrial felt high resilience, is had well Wearability, bond properties is good, and it is small to be not easy loose and tissue tight, hole, therefore from industrial felt as encapsulant, no Using only long lifespan, while the sealing between bearing and rotatable parts can be further improved, prevent fluid from revealing.

In one of the embodiments, the fixing device is " L " the shape gland being fixed on the bearing cap.

In one of the embodiments, the airtight and watertight padding of triangle is formed between the gland lower end and the bearing cap Groove.

In one of the embodiments, the gland is fixedly connected by fixing bolt with the bearing cap, using bolt Connection, facilitates the disassembly and installation of gland, while also can adjust compression dynamics accordingly according to the storage of industrial felt.

Beneficial effect acquired by the utility model is：A kind of vertical hydrogenerator bearing provided by the utility model is close Seal structure, by between bearing and rotatable parts set multiple-sealed groove, in seal groove fill industrial felt and turn Set disc to form the bearing seal structure together on dynamic component, oozing out for lubricating oil at bearing seal, and can be prevented Prevent the spilling of mist of oil at bearing seal；The bearing seal structure is simple in construction simultaneously, installs and easy to maintenance, from industrial hair Many advantages, such as felt has good sealing effect as encapsulant, and service life is long and cost is cheap.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Embodiment

As shown in figure 1, a kind of vertical hydrogenerator bearing seal structure, including bearing and it is connected with bearing seal Rotatable parts 5, bearing include bearing cap 1 and the oil collecting ring inside bearing cap 1, corresponding with oil collecting ring on rotatable parts 5 What is coordinated is provided with disc 6, and disc 6 follows rotatable parts 5 to rotate and will be adhered to rotation section under the influence of centrifugal force Lubricating oil on part 5 is got rid of in the oil collecting ring inside bearing cap 1.

Preferably, disc 6 is arranged on rotatable parts 5, and a step is formed on the periphery of rotatable parts 5, is got rid of Oil ring 6 is welded to connect with rotatable parts 5 or disc 6 is integrally formed with rotatable parts 5；When the cylindrical adhesion lubrication of rotatable parts 5 Oil and when being climbed up along the face of cylinder, disc 6 is blocked equivalent to a step, the route that lubricating oil is climb is formed, and is glued Attached lubricating oil is concentrated at disc 6, and disc 6 follows rotatable parts 5 to rotate, therefore the oil-collecting at disc 6 can be Be dumped into the presence of centrifugal force in the oil collecting ring inside bearing cap 1, reached and meanwhile prevent lubricating oil fluid and mist of oil leakage Purpose.

Preferably, bearing cap 1 can form similar fan with being provided with multiple-sealed annular groove 7 on the faying face of rotatable parts 5 The sealing structure of palace formula, mist of oil can reach mist of oil Drain Resistance by that can produce throttle effect during the gap in tortuous labyrinth Purpose.

Preferably, in order to further prevent the leakage of mist of oil, the sealing between bearing and rotatable parts 5, axle are improved Hold lid 1 and airtight and watertight padding groove be provided with the top of the faying face of rotatable parts 5, encapsulant 4 is filled with inside airtight and watertight padding groove, And be fixed and clamped by the fixing device on bearing cap 1, gapless is matched somebody with somebody between encapsulant 4 and bearing and rotatable parts 5 Close.

Preferably, encapsulant 4 is industrial felt, industrial felt high resilience, has good wearability, bond properties Good, it is small to be not easy loose and tissue tight, hole, therefore is used as encapsulant from industrial felt, and not only service life is grown, together When can further improve sealing between bearing and rotatable parts, prevent fluid from revealing.

Preferably, fixing device is " L " the shape gland 2 being fixed on bearing cap 1.

Preferably, the airtight and watertight padding groove of triangle is formed between the lower end of gland 2 and bearing cap 1.

Preferably, gland 2 is fixedly connected by fixing bolt 3 with bearing cap 1, is connected by screw bolts, and facilitates tearing open for gland Unload and install, while also compression dynamics can be adjusted accordingly according to the storage of industrial felt.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope that this specification is recorded all is considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed, But therefore it can not be interpreted as the limitation to the utility model patent scope.It should be pointed out that for the common of this area For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (8)

1. a kind of vertical hydrogenerator bearing seal structure, it is characterised in that connect including bearing and with the bearing seal The rotatable parts connect, the bearing include bearing cap and the oil collecting ring inside bearing cap, on the rotatable parts with it is described The corresponding cooperation of oil collecting ring is provided with disc, and the disc follows the rotatable parts to rotate and in the effect of centrifugal force It is lower to get rid of the lubricating oil being adhered on the rotatable parts in the oil collecting ring.

A kind of 2. vertical hydrogenerator bearing seal structure according to claim 1, it is characterised in that the disc Be arranged on the rotatable parts, and on the rotatable parts periphery formed a step, the disc with described turn Dynamic component is welded to connect or the disc is integrally formed with the rotatable parts.

A kind of 3. vertical hydrogenerator bearing seal structure according to claim 2, it is characterised in that the bearing cap With being provided with multiple-sealed annular groove on the faying face of the rotatable parts.

A kind of 4. vertical hydrogenerator bearing seal structure according to claim 3, it is characterised in that the bearing cap With being provided with airtight and watertight padding groove at the top of the faying face of the rotatable parts, sealing material is filled with inside the airtight and watertight padding groove Material, and be fixed and clamped by the fixing device on the bearing cap, the encapsulant and the bearing and rotatable parts Between blind-mate.

A kind of 5. vertical hydrogenerator bearing seal structure according to claim 4, it is characterised in that the sealing material Expect for industrial felt.

A kind of 6. vertical hydrogenerator bearing seal structure according to claim 5, it is characterised in that the fixed dress It is set to " L " the shape gland being fixed on the bearing cap.

7. a kind of vertical hydrogenerator bearing seal structure according to claim 6, it is characterised in that under the gland The airtight and watertight padding groove of triangle is formed between end and the bearing cap.

8. a kind of vertical hydrogenerator bearing seal structure according to claim 7, it is characterised in that the gland leads to Fixing bolt is crossed to be fixedly connected with the bearing cap.