CN2364301Y

CN2364301Y - Feedback rotating slide valve for oil power machine

Info

Publication number: CN2364301Y
Application number: CN 99223387
Authority: CN
Inventors: 李宝玉; 高晓玲
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-05
Filing date: 1999-04-05
Publication date: 2000-02-16
Anticipated expiration: 2009-04-05

Abstract

The utility model relates to a feedback rotary slide valve for an oil power machine, which is composed of a roller, a support frame, an end cover, a housing, a sleeve barrel, a slide valve and a back cover. The utility model is characterized in that both ends, of a small slide valve, which are connected with the and a bearing pass through the end cap; an outer sleeve of the bearing is connected with the inner diameter of a rotary slide valve, and is fixed by gland nuts; one end of the rotary slide valve is additionally provided with a concave ring groove; the end part of the rotary slide valve is provided with two axial symmetrical communicating holes; one end of the communicating hole is communicated with the concave ring groove; the other end of the communicating hole is communicated with a valve surface along radial direction; another communicating hole is arranged on a casing; both ends of the communicating hole are communicated with the concave ring groove in the casing. The valve can cause oil film to be formed between the rotary slide valve and the sleeve barrel to prevent the rotary slide valve from directly contacting the sleeve barrel, and thus frictional resistance is reduced; the utility model has high sensitivity and favorable tracking property.

Description

Oil engine feedback revolving valve

The utility model is to belong to the rotary component that is used for steam turbine.

The present oil engine feedback pilot valve that uses, its effect are stablizing in the control oil engine open and close process, guarantee the stability of steam turbine load or rotating speed.This guiding valve proper functioning is in horizontal and the inclined-plane horizontal state; Guiding valve makes guiding valve bottom and sleeve gap reduce under the effect of deadweight, perhaps directly contact, and oil film is a month dentition formula, makes guiding valve form semi-dry friction, dry friction at the volley, thereby the resistance of guiding valve is increased.Because thrust is certain, the rich degree of its thrust is very little, and bite easily just is particularly when in the oil during turbidity test difference, just more serious, feedback pilot valve occurs and does not follow the tracks of, and the oil engine operation swings up and down big, unit load also just swing influence the safe operation of unit greatly.

The purpose of this utility model is to make a kind of oil engine feedback revolving valve, original guiding valve is changed into rotary, and the surface friction drag of guiding valve and sleeve is reduced greatly; the rich degree of guiding valve thrust increases; the feedback and tracking performance is good, and the oil engine motion stabilization is guaranteed the stability of the load of unit.

The utility model is made up of roller 1, straight pin 2, support 3, little guiding valve 4, end cap 5, key 6, gland nut 7, bearing 8, nut 9, housing 10, sleeve 11, revolving valve 12, bonnet 13, it is characterized in that: support 3 one ends and little guiding valve 4 one ends are fixedly connected, little guiding valve 4 is positioned at end cap 5, radially connects with key 6; Bearing 8 usefulness nuts 9 connect with an end of little guiding valve 4, and bearing 8 overcoats and revolving valve 12 inside diameter surfaces are fixedly connected, and gland nut 7 connects with revolving valve 12, and compress with the overcoat of bearing 8; The other end of revolving valve 12 increases spill annular groove C, and there are axial symmetrical two linked holes its valve end, place, an end and spill annular groove C UNICOM, the other end radially with valve surface UNICOM; With the corresponding sleeve 11 of spill annular groove C, housing 10 places of revolving valve 12 through hole, spill annular groove are arranged, on the housing 10 linked hole is arranged, the spill annular groove a UNICOM of an end and housing 10, the spill annular groove C UNICOM of the other end and revolving valve 12; Boss is arranged in the middle of the inner chamber of sleeve 11.

Working principle of the present utility model;

Owing to connect with bearing 8 between the little guiding valve 4 in the utility model and the revolving valve 12, and connect with nut 9, gland nut 7, when pressure oil field oil pocket worker when narrow oilhole b enters oil pocket between revolving valve 12 and the sleeve 11, because the diameter of the left and right sides active chamber in the oil pocket is different, the power of active force does not wait, make revolving valve 12 left directive effect all the time, thereby guarantee that roller 1 contact well eternal tracking with chute on the oil engine.Pressure oil forms pulsation oil when narrow hydraulic fluid port b, under steady working condition, be 0.98Pa, and when pulsation innage during in 0.98Pa, system moves right revolving valve, on the contrary revolving valve be moved to the left, guarantee the oil engine motion stabilization.Pressure oil enters in the revolving valve spill annular groove C through the linked hole on the housing 10 again simultaneously, and oil as Fig. 2, under symmetrical reaction force, rotates revolving valve 12 through the axial symmetrical linked hole ejection of revolving valve 12.

The utility model owing to connect with bearing 8 between little guiding valve 4 and the revolving valve 12, under the effect of pressure oil, is moved to the left revolving valve 12 compared with prior art all the time, and assurance roller 1 chute eternal and on the oil engine contacts.Pressure oil is through two linked hole ejections of symmetry on the revolving valve, under symmetrical reaction force, revolving valve is rotated, make between sleeve and the revolving valve 12 and form oil film, guarantee that sleeve 11 is not directly contacting with revolving valve 12, form annular oil film state, surface friction drag reduces, improve the rich degree of anti-bite ability, under same oily condition, have good antijamming capability.Revolving valve 12 highly sensitive, tracing property is good, thereby improves the sensitivity of whole regulating system, greatly reduces the rate of delaying, and guarantees the operation of unit load stability and safety.

Description of drawings:

Fig. 1 is the utility model general structure schematic representation;

Fig. 2 is the A-A sectional drawing of the utility model Fig. 1.

Embodiment of the present utility model:

The utility model is made up of roller 1, straight pin 2, support 3, doffer 4, end cap 5, key 6, gland nut 7, bearing 8, nut 9, housing 10, sleeve 11, revolving valve 12, bonnet 13, as shown in Figure 1; Wherein: roller 1, straight pin 2, support 3, key 6, gland nut 7, bearing 8, nut 9 can adopt selects part for use; Little guiding valve 4, sleeve 11, housing 10, revolving valve 12 usefulness stainless steels process, its middle shell 10 increases a spill annular groove in inner chamber, through the hole of sleeve 10 and the groove C UNICOM of revolving valve, and linked hole is arranged, two spill annular groove UNICOMs in this linked hole and the housing 10, as shown in Figure 1; By four pairs of oil inlet holes, its internal diameter has a boss, as shown in Figure 1 on sleeve 11 walls.Revolving valve 12 its shapes have two spill annular grooves as shown in Figure 1, and the one end has two linked holes vertically, an end and a spill annular groove UNICOM, and the other end is perforate and slide-valve surface UNICOM radially.End cap 5, bonnet 13 are used A ₃Steel processes, and wherein on the bonnet 13 peep hole is arranged, in order to assorted dirt of removing housing 10 inner chambers and the rotation situation of observing revolving valve 12.

Roller 1 usefulness straight pin 2 is connected with support 3, the other end of support 3 connects with little guiding valve 4, little guiding valve 4 is positioned at end cap 5, and radially connect with end cap 5 with key 6, cover connects with an end of little guiding valve 4 in the bearing 8, is connected and fixed with nut 9, and the internal diameter of revolving valve 12 is enclosed within on the little guiding valve 4, connect with the overcoat of bearing 8, and be connected and fixed with gland nut 7.Sleeve 11 places housing 10 internal fixation to join.Revolving valve 12 places in the sleeve 11, and end cap 5, bonnet 13 connect with the both ends of the surface of housing 10, forms oil engine feedback revolving valve.

During work, the chute of roller 1 with oil engine joined, get final product work.

Claims

1, a kind of oil engine feedback revolving valve, form by roller, straight pin, support, end cap, housing, sleeve, guiding valve, bonnet, roller connects with support one end with straight pin, the support the other end connects with guiding valve one end, and sleeve is between housing and guiding valve, and end cap, bonnet connect with the housing two ends, guiding valve passes through end cap, it is characterized in that: support (3) one ends and little guiding valve (4) one ends are fixedly connected, and little guiding valve (4) is positioned at end cap (5), radially connect with key (6); Bearing (8) connects with an end of little guiding valve (4) with nut (9), and bearing (8) overcoat and revolving valve (12) inside diameter surface are fixedly connected, and gland nut (7) connects with revolving valve (12), and compresses with the overcoat of bearing (8); The other end of revolving valve (12) increases spill annular groove C, and there are axial symmetrical two linked holes its valve end, place, an end and spill annular groove C UNICOM, the other end radially with valve surface UNICOM; Through hole, spill annular groove have been located with the corresponding sleeve of spill annular groove C (11), the housing (10) of revolving valve (12), housing has linked hole on (10), the spill annular groove a UNICOM of one end and housing (10), the spill annular groove C UNICOM of the other end and revolving valve (12); Boss is arranged in the middle of the inner chamber of sleeve (11).