CN2616686Y

CN2616686Y - Sensitive oil scraper ring

Info

Publication number: CN2616686Y
Application number: CN 03212835
Authority: CN
Inventors: 潘志忠
Original assignee: Individual
Current assignee: Harbin Longsheng Turbine Equipment Co Ltd
Priority date: 2003-04-23
Filing date: 2003-04-23
Publication date: 2004-05-19
Anticipated expiration: 2013-04-23

Abstract

The utility model relates to a sensitive oil wiper ring, belonging to the turbine bearing and sealing device technical field, aiming at solving the power plant losses problems of excessive gap, oil leak and water-in-oil caused by the high vibration of the steam turbine shafting and the bump and rub of the rotor and the oil wiper ring. One part of the sensitive oil wiper ring comprises an outer oil wiper ring 1, an inner oil wiper ring 2, sealing ring 7 which is provided with two spring modules 22, two adjusting block modules and a seal piece 8; the other part of the sensitive oil wiper ring comprises an outer oil wiper ring 17, a sealing ring 14 which is provided with two spring modules 24, and a seal piece 19. During the steam turbine operation, the gap between the sealing ring which arranged at the bottom of the sealing ring and the rotor spindle is less than 0.06 mm. Thus, the utility model solves the problem of oil leak caused by excessive gap, and the problem of water-in-oil. Adopting the HLB sealing materials, the sealing piece has the advantages of strong abrasion resistance, strong high-temperature resistance and self lubrication, thus avoiding fire accident caused by the rotor scuffing and rubbing, which is favorable for safe operation.

Description

Responsive formula flinger ring

Technical field: the utility model relates to a kind of responsive formula flinger ring, belongs to the seal arrangement technical field of steam turbine bearing.

Background technique: traditional flinger ring is a stationary structure, by interior, outer shroud is formed, interior ring is fixed on the outer shroud, in, inlay the copper tooth on the outer shroud, outer shroud is fixed on the bearing housing, the gap that back oil catch and rotor are installed immobilizes, and the steam turbine unit is in start-up course, and rotor vibrates, and vibration is bigger when particularly crossing critical speed of rotation, because may producing the moment friction, sound matching gap problem make rotor local overheated, and the inequality of being heated is directed at rotor and produces temporary transient crookedly, makes the vibration aggravation, rubs with regard to easily rotor and flinger ring being bumped like this, simultaneously owing to reasons such as installation deviation, also cause tooth and rotor to wear, its gap is increased, it is moisture serious to cause leakage of oil and gas leakage to make in the bearing housing, so traditional flinger ring is difficult to solve the problem of leakage of oil and Water in oil in the steam turbine unit operation, causes very big loss to the power station.

Summary of the invention: starting for solving the steam turbine unit, reason such as big or installation deviation causes rotor and flinger ring seriously to bump to grind and produces excesssive gap owing to shafting vibration in the stopping process, leakage of oil and Water in oil cause the problem of very big loss and design a kind of new-type flinger ring-responsive formula flinger ring to the power station in the solution steam turbine unit operation, one of responsive formula flinger ring is by the oily outer shroud 1 of retaining, ring 2 in the retaining oil, seal ring 7 that two spring assemblies 22 and two adjust block assembly and diaphragm seal 8 is installed promptly to be sealed the arc piece and forms, keeping off oily outer shroud 1 is fixed on the bearing housing, ring 2 is fixed on the oily outer shroud 1 of retaining through screw 3 in the retaining oil, seal ring 7 and interior ring 2 sealings of retaining oil, be slidingly connected, spring assembly 22 is by guide rod 4, nut 5, spring 6 is formed, spring 6 and guide rod 4 are fixed on the upper end of seal ring 7 through nut 5, diaphragm seal 8 usefulness presser types are by screw 9, pad 10 is fixed on seal ring 7 lower ends, or be fixed on seal ring 7 lower ends by screw 9 with inserted, adjusting block assembly 23 forms by adjusting piece 11 and screw 12, adjust piece 11 and be fixed on the upper end of seal ring 7 through screw 12, diaphragm seal 8 usefulness presser types are by screw 9, pad 10 is fixed on seal ring 7 lower ends or is fixed on seal ring 7 lower ends with inserted by screw 9; Two of responsive formula flinger ring is by the oily outer shroud 13 of retaining, the seal ring 14 that two spring assemblies 24 and diaphragm seal 19 be installed promptly seals the arc piece and forms, keeping off oily outer shroud 13 is fixed on the bearing housing, spring assembly 24 is by guide rod 15, nut 16, spring 17 is formed, spring 17 and guide rod 15 are fixed on the upper end of seal ring 14 through nut 16, the side, upper end is fixed with the seal ring 14 and oily outer shroud 13 sealings of retaining of locating stud, be slidingly connected, diaphragm seal 19 usefulness presser types are by screw 20, pad 21 is fixed on seal ring 14 lower ends or is fixed on seal ring 14 lower ends with inserted by screw 20; Advantage of the present utility model is: when the steam turbine unit opens machine or shuts down; when disalignment appears in appearance shafting vibration or rotor and flinger ring; seal ring ring or in the conduit that is keeping off oily outer shroud, freely fluctuate under by the effect of spring in retaining oil at guide rod; having reduced rotor contacts with the rigidity of diaphragm seal; the wear extent of diaphragm seal is reduced; when rotor is in the smooth running state; seal ring returns to design attitude under the effect of spring force; simultaneously the springiness assembly freely stretches to make between the diaphragm seal that is fixed on the seal ring lower end and the rotor shaft and remains very little gap; general gap is below 0.06 millimeter; thereby solved the problem of big leakage of oil in gap and Water in oil; diaphragm seal adopts the HLB sealing material; has the high temperature resistant and self lubricity of extremely strong wear resistance; therefore it has avoided the rotor sliding injury; and avoided helping the safe operation of unit because of causing fire accident with friction rotor.

Description of drawings:

Fig. 1: in one of responsive formula flinger ring, the plan view when diaphragm seal 8 usefulness presser types are fixed on seal ring 7 lower ends by screw 9, pad 10;

The A-A sectional drawing of Fig. 2: Fig. 1;

The B-B sectional drawing of Fig. 3: Fig. 1;

Fig. 4: in one of responsive formula flinger ring, the plan view that diaphragm seal 8 usefulness are inserted when being fixed on seal ring 7 lower ends by screw 9;

The C-C sectional drawing of Fig. 5: Fig. 4;

The D-D sectional drawing of Fig. 6: Fig. 4;

Fig. 7: responsive formula flinger ring two in, the plan view when diaphragm seal 8 usefulness presser types are fixed on seal ring 7 lower ends by screw 9, pad 10;

The E-E sectional drawing of Fig. 8: Fig. 7;

Fig. 9: responsive formula flinger ring two in, the plan view that diaphragm seal 8 usefulness are inserted when being fixed on seal ring 7 lower ends by screw 9;

The F-F sectional drawing of Figure 10: Fig. 9.

Among the figure: the oily outer shroud of 1 retaining, ring in the 2 retaining oil, 3 screws, 4 guide rods, 5 nuts, 6 springs, 7 seal rings, 8 diaphragm seals, 9 screws, 10 pads, 11 adjust piece, 12 screws, the oily outer shroud of 13 retainings, 14 seal rings, 15 guide rods, 16 nuts, 17 springs, 18 locating studs, 19 diaphragm seals, 20 screws, 21 pads, 22 spring assemblies, 23 adjust block assembly, 24 spring assemblies.

Embodiment: narrate concrete structure of the present utility model and embodiment below in conjunction with accompanying drawing, as shown in Figure 1:, one of responsive formula flinger ring by ring 2 in the oily outer shroud 1 of retaining, the retaining oil, i.e. six the sealing arc pieces and forming of seal ring 7 that two spring assemblies 22 and two adjust block assembly 23 and diaphragm seal 8 are installed; Keeping off oily outer shroud 1 is fixed on the bearing housing, ring 2 is fixed on the oily outer shroud 1 of retaining through screw 3 in the retaining oil, ring 2 seals, is slidingly connected in seal ring 7 and the retaining oil, spring assembly 22 is made up of guide rod 4, nut 5, spring 6, spring 6 and guide rod 4 are fixed on the upper end of seal ring 7 through nut 5, diaphragm seal 8 usefulness presser types are fixed on seal ring 7 lower ends (seeing Fig. 1, Fig. 2) by screw 9, pad 10, or are fixed on seal ring 7 lower ends (seeing Fig. 4, Fig. 5) with inserted by screw 9; Adjusting block assembly 23 forms by adjusting piece 11 and screw 12, adjust piece 11 is fixed on seal ring 7 through screw 12 upper end, diaphragm seal 8 usefulness presser types are fixed on seal ring 7 lower ends (seeing Fig. 1, Fig. 3) by screw 9, pad 10, or are fixed on seal ring 7 lower ends (seeing Fig. 4, Fig. 6) with inserted by screw 9; As shown in Figure 7: responsive formula flinger ring two by the oily outer shroud 13 of retaining, i.e. six sealing arc pieces and forming of seal ring 14 that two spring assemblies 24 and diaphragm seal 19 be installed; Keeping off oily outer shroud 13 is fixed on the bearing housing, spring assembly 24 is made up of guide rod 15, nut 16, spring 17, spring 17 and guide rod 15 are fixed on the upper end of seal ring 14 through nut 16, the seal ring 14 that the side, upper end is fixed with locating stud seals, is slidingly connected with the oily outer shroud 13 of retaining, diaphragm seal 19 usefulness presser types are fixed on seal ring 14 lower ends (seeing Fig. 7, Fig. 8) by screw 20, pad 21, or are fixed on seal ring 14 lower ends (seeing Fig. 9, Figure 10) with inserted by screw 20; In implementation process particularly; when the steam turbine unit opens machine or shuts down; when disalignment appears in appearance shafting vibration or rotor and flinger ring; seal ring 7 is ring 2 in retaining oil; seal ring 14 passes through spring 6 in the conduit of the oily outer shroud 13 of retaining; 17 at guide rod 4; freely fluctuate under 15 the effect; rotor and diaphragm seal 8 have been reduced; 19 rigidity contact; make diaphragm seal 8; 19 wear extent reduces; when rotor is in the smooth running state; seal ring returns to design attitude under the effect of spring force; simultaneously spring assembly freely stretches to make between the diaphragm seal that is fixed on the flinger ring lower end and the rotor shaft and remains very little gap; general gap is below 0.06 millimeter; thereby solved the problem of big leakage of oil in gap and Water in oil; diaphragm seal adopts the HLB sealing material; has the high temperature resistant and self lubricity of extremely strong wear resistance; therefore it has avoided the rotor sliding injury, and has avoided helping the safe operation of unit because of causing fire accident with friction rotor.

Claims

1, a kind of responsive formula flinger ring is made up of ring 2, seal ring 7, the oily outer shroud 13 of retaining, seal ring 14 in the oily outer shroud 1 of retaining, the retaining oil, it is characterized in that:

A, the oily outer shroud 1 of retaining are fixed on the bearing housing, ring 2 is fixed on the oily outer shroud 1 of retaining through screw 3 in the retaining oil, seal ring 7 is assembled by sealing arc piece, ring 2 sealings in seal ring 7 that two spring assemblies 22 and two adjust block assembly 23 and diaphragm seal 8 and the retaining oil is installed, is slidingly connected;

B, the oily outer shroud 13 of retaining are fixed on the bearing housing, and seal ring 14 is assembled by sealing arc piece, and the side, upper end is fixed with locating stud 18 and the seal ring 14 of two spring assemblies 24 and diaphragm seal 19 is installed and keeps off oily outer shroud 13 and seals, is slidingly connected.

2, responsive formula flinger ring as claimed in claim 1, it is characterized in that: spring assembly 22 is made up of guide rod 4, nut 5, spring 6, spring 6 and guide rod 4 are fixed on the upper end of seal ring 7 through nut 5, and diaphragm seal 8 usefulness presser types are fixed on seal ring 7 lower ends or are fixed on seal ring 7 lower ends with inserted by screw 9 by screw 9, pad 10; Adjusting block assembly 23 forms by adjusting piece 11 and screw 12, adjust piece 11 is fixed on seal ring 7 through screw 12 upper end, diaphragm seal 8 usefulness presser types are fixed on seal ring 7 lower ends by screw 9, pad 10, and diaphragm seal 8 usefulness are inserted to be fixed on seal ring 7 lower ends by screw 9.

3, responsive formula flinger ring as claimed in claim 1, it is characterized in that: spring assembly 24 is made up of guide rod 15, nut 16, spring 17, spring 17 and guide rod 15 are fixed on the upper end of seal ring 14 through nut 16, diaphragm seal 19 usefulness presser types are fixed on seal ring 14 lower ends by screw 20, pad 21, and diaphragm seal 19 usefulness are inserted to be fixed on seal ring 14 lower ends by screw 20.