CN201810554U

CN201810554U - Hinge seal gap automatic compensation mechanism for spherical compressor

Info

Publication number: CN201810554U
Application number: CN2010205066178U
Authority: CN
Inventors: 王梦莹; 王陆一
Original assignee: 马丽莉
Priority date: 2010-08-26
Filing date: 2010-08-26
Publication date: 2011-04-27
Anticipated expiration: 2020-08-26

Abstract

The utility model designs a hinge seal gap automatic compensation mechanism for a spherical compressor on the basis of China patent ZL03114505.1. A cylindrical surface hinge is formed among a central pin, a turntable pin base and a piston pin base of the spherical compressor, an embedded lump is arranged inside a groove on the pin base of the cylindrical surface hinge, the shape of the embedded lump is of a fan-shaped block structure with thick sides and thin middle part, the embedded lump is arranged at the bottom of the groove, the shape of the embedded lump is matched with the shape of an outer cylindrical surface which is raised on a half round post on the pin base of the groove and the cylindrical surface hinge and forms a sealing movable fit; and when one side of an operation room which forms alternative compression at two sides of the cylindrical surface hinge stays at a high pressure status, the side surface of the embedded lump which is arranged on the operation room is stressed, so the embedded lump makes a micro relative movement towards the lower-pressure side, the gap between the embedded lump and the bottom surface of the groove and the raised cylindrical surface of the half round post which is close to the high pressure is reduced, when the pressure is larger, the gap is smaller.

Description

A kind of automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor

Technical field

The utility model relates to a kind of hinge sealing configuration, particularly a kind of sealing that is used for the hinge structure that the spherical compressor piston is connected with rotating disk.

Background technique

The patent No. is that ZL03114505.1, patent name are that the Chinese patent of " a kind of variable capacity mechanism that is used for compressor " discloses a kind of novel positive displacement compressor, and it has advantages such as no air inlet and exhaust valve, movement parts is few, vibration is little, mechanical efficiency is high, sealing is reliable.

But piston is connected the design existence enforcement defective of hinge structure with rotating disk in this patent.In Chinese patent ZL03114505.1, a kind of structure is that piston pin boss and rotating disk key seat are complementary, and connect together by centrepin and to form the cylinder hinge and connect, form half cylindrical groove in the middle of two key seats in this structure, this structure is not suitable for large-scale industrial production, and precision is difficult to assurance, thereby influences leakage efficiency, and this can make machine performance be affected; Another kind of structure does not have centrepin, be connected with " Ω " type cylindrical shaft formation cylinder hinge that on piston, forms at " C " type hinge column sleeve of the opening that forms on the rotating disk less than 180 degree, play certain hinge interconnect function, but this structure stress ability, be easy to when in cylinder, high pressure air being arranged produce distortion, make the seal action inefficacy and can cause other position mechanical friction to increase.

Summary of the invention

The purpose of this utility model is exactly on the basis of Chinese patent ZL03114505.1, design a kind of be used for spherical compressor have a new hinges sealing configuration, to overcome the defective of Chinese patent 03114505.1, make the more reliable also suitable mass production of sealing, thereby improve the complete machine performance.

The technical solution of the utility model is, a kind of automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor, it is characterized in that: the cylinder hinge that forms between the centrepin of spherical compressor, rotating disk key seat and the piston pin boss, being provided with one in the groove on the key seat that forms the cylinder hinge inserts, this is inserted and is positioned at bottom portion of groove, it is shaped as the thick sector unit structure in intermediate thin both sides, and with groove and suitable and form sealing movingly respectively with the external cylindrical surface face shape of the corresponding semicolumn projection of semicolumn groove.

The external cylindrical surface of the semicolumn projection on the key seat of described inner cylindrical surface of inserting and formation cylinder hinge is complementary, and forms sealing movingly; The both ends of the surface of inserting are the plane, form sealing movingly with the two side of groove; The shape of the end face of inserting and groove floor shape are suitable and form sealing movingly; The bi-side of inserting are the plane, and its bi-side of packing into behind the groove of inserting are concordant with the both end sides end face of groove; When a side of the working room of the alternate compression that forms in cylinder hinge both sides is in high pressure conditions, the side pressurized of inserting and being positioned at this working room, to low voltage side one small relatively moving arranged and make to insert, thereby the cylndrical surface of inserting with groove floor and semicolumn projection is reduced near on high-tension side gap, play the gap, high pressure side and reduce automatically, and the higher for the pressure and the smaller for the gap.

The described end face of inserting projection is an arc surface, and the groove floor on the key seat of the cylinder hinge that matches with it also is arc surface.

The described end face of inserting is the plane, and the groove floor on the key seat of the cylinder hinge that matches with it also is the plane.

According to the concrete structure of centrepin, piston pin boss and rotating disk key seat formation cylinder hinge, described inserting can be arranged in the groove of piston pin boss, also can be arranged in the groove of rotating disk key seat.

Advantage of the present utility model:

(1) utilizes the in-cylinder pressure of alternate to be energy source, by the displacement of inserting the close high pressure side radial clearance of cylinder hinge is diminished automatically, and pressure reduction is big more, seal reliably more, can be described as the clearance automatic compensation structure;

(2) having guaranteed the feasibility of extensive manufacturing from structural design, is exactly the illustrated position of rotary cutter as two-dot chain line among Fig. 9;

(3) owing to designed the clearance automatic compensation structure, the radial fit accuracy of manufacturing of hinge structure intermediate portion is declined to a great extent, reduce manufacture difficulty and manufacture cost;

(4) because in the real-world operation, piston can not surpass 20% of spindle speed usually with respect to the swing speed of rotating disk, and be two active chamber alternate compression that form, lubricating condition can guarantee that there is oil film at each position, so the place of inserting can not produce high energy consumption and damage that surface friction brings;

(5) because the amount of movement of inserting is very little, and be the alternately changing of the relative positions, have oil film to be present in each gap again, so can not produce impact noise and damage.

Description of drawings

Fig. 1: section of structure;

Fig. 2: casing sectional drawing;

Fig. 3: A-A sectional drawing among Fig. 2;

Fig. 4: rotating disk plan view;

Fig. 5: rotating disk left view shown in Figure 4

Fig. 6: rotating disk plan view shown in Figure 4;

Fig. 7: the piston and the assemblying body plan view of inserting;

Fig. 8: the piston shown in Figure 7 and the assemblying body left view of inserting;

Fig. 9: piston plan view;

Figure 10: piston left view shown in Figure 9;

Figure 11: the plan view of inserting;

Figure 12: the plan view of inserting shown in Figure 11;

Figure 13: cylinder hinge sealing configuration enlarged view;

Figure 14: the piston of another kind of mode of execution and the composite unit structure schematic representation of inserting.

Among the figure: the 1-piston; The 2-cylinder cap; The 3-air flue; The 4-V1 working room; The 5-attachment screw; The 6-main shaft; The 7-spindle carrier; The 8-rotating disk; The 9-cylinder body; The 10-centrepin; The 11-V2 working room; The 12-exhaust passage; The 13-gas-entered passageway; 14-inserts.

Embodiment

Fig. 1 is a spherical compressor example structure sectional drawing of the present utility model, this spherical compressor comprises cylinder body 9, cylinder cap 2, piston 1, insert 14, rotating disk 8, main shaft 6, spindle carrier 7 and centrepin 10, and cylinder body 9 links to each other by attachment screw 5 with cylinder cap 2 and forms a spherical inner chamber; As Fig. 9, shown in Figure 10, the piston pin boss that piston 1 has spherical end face, stretches out a piston shaft, two angled sides, air flues 3 and form in bottom, piston 1 bi-side from spherical end face central authorities, piston pin boss is a semi-cylindrical in configuration, the middle part of semicolumn is fluted, and the pin-and-hole of perforation is arranged on its axial direction; Cylinder cap 2 is provided with the axis hole that matches with piston shaft, and piston 1 can freely rotate in axis hole around piston shaft, and the spherical end face of piston has the identical centre of sphere and forms sealing movingly with spherical inner chamber;

The structure of rotating disk 8 such as Fig. 4, Fig. 5, shown in Figure 6, a turntable shaft is stretched out at the center, lower end surface of rotating disk 8, the top of rotating disk 8 and the outer circumferential face between the lower end surface are the rotating disk sphere, and the rotating disk sphere has the identical centre of sphere with spherical inner chamber and is close to spherical inner chamber formation sealing movingly; Relative with piston pin boss on the top of rotating disk 8 should have a rotating disk key seat, and the two ends of rotating disk key seat are the semicolumn groove, and the middle part is the semicolumn of projection;

Centrepin 10 inserts piston pin boss and rotating disk key seat, spindle carrier 7 links to each other by attachment screw 5 with cylinder body 9, for the rotation of main shaft 6 provides support, one end of main shaft 6 is eccentric inclined hole, eccentric inclined hole is positioned at cylinder body 9 and links to each other with turntable shaft, the other end links to each other with power mechanism, for the compressor transfiguration provides power; The axis of above-mentioned piston shaft and turntable shaft and main shaft 6 is the centre of sphere by spherical inner chamber all, and the axis of piston shaft and turntable shaft forms identical angle α with the axis of main shaft 6; The pin-and-hole of the piston pin boss of centrepin 10 insertion pistons 1 and the rotating disk key seat of rotating disk 8 forms the cylinder hinge, piston 1 forms sealing with rotating disk 8 by the cylinder hinge and is dynamically connected, and the hemi-spherical cavities of the upper-end surface of rotating disk 8 and spherical inner chamber formation is divided into V1 working room 4 and V2 working room 11;

Insert 14 as Figure 11, shown in Figure 12, insert 14 for sector unit structure thick on both sides and thin in the middle, be embedded in the piston pin boss central slot of piston 1, the suitable formation sealing of the semi-cylindrical shape of its inner cylindrical surface shape and rotating disk 8 projectioies movingly, its protruding end face is and the suitable external cylindrical surface of the piston pin boss groove floor of piston 1, insert 14 bi-side are concordant with the piston sphenoid surface, and 14 the both ends of the surface of inserting and the two side of piston pin boss central slot form sealing movingly; The

piston

1 and 14 pistons that are combined to form spherical compressor of inserting, piston form composite unit structure such as Fig. 7, shown in Figure 8 with inserting;

Figure 13 is a cylinder hinge sealing configuration enlarged view, the cylinder hinge that forms between the centrepin 10 of spherical compressor, rotating disk 8 and the piston 1, be provided with one in the central slot on the piston pin boss that forms the cylinder hinge and insert 14, these 14 bottom portion of groove that are positioned at the piston pin boss of piston 1 of inserting, it is shaped as the thick sector unit structure in intermediate thin both sides, and with groove and suitable and can form sealing respectively movingly with the shape of the external cylindrical surface of the corresponding semicolumn projection of groove; The semi-cylindrical of the projection on 14 inner cylindrical surface and the rotating disk key seat that forms the cylinder hinge of inserting is complementary, and forms sealing movingly; 14 the both ends of the surface of inserting are the plane, form sealing movingly with the two side of piston pin boss groove; The groove floor shape of shape of 14 protruding end face of inserting and piston pin boss is suitable and form sealing movingly, 14 the end face inserted among the Ordering-the embodiment is an arc surface, the groove floor of the piston pin boss that matches with it also is arc surface, be beneficial to the cutting of rotary cutter, helping extensive manufacturing, is exactly the illustrated position of rotary cutting mechanism as two-dot chain line among Fig. 9; Insert 14 bi-side are the plane, and 14 pack into its bi-side and the both end sides end face of groove behind the groove of piston pin boss of inserting are that the cleat planes of piston 1 is mutually concordant; When a side of the working room of the alternate compression that forms in cylinder hinge both sides is in high pressure conditions, be in the pressure high pressure conditions as V1 working room 4 in the drawings, when V2 working room 11 is in lower pressure state, working medium in the V1 working room 4 will be leaked in the V2 working room 11 of low pressure by various gaps, but the 14 side pressurizeds that are positioned at V1 working room 4 owing to insert this moment, 14 one small relatively moving arranged and make to insert to low voltage side, 14 are structure thick on both sides and thin in the middle owing to insert, so A position among the figure on the piston 1 and the B position on the rotating disk 8 will stop moving of inserting, minute movement makes the gap at this two place become minimum; When V2 working room 11 is in high pressure conditions, corresponding same effect is arranged.V1 working room 4 and V2 working room 11 pressure alternate, inserting 14 also alternately has minute movement from the hyperbaric chamber to low pressure chamber, play the effect that radial seal gap, hinge middle part, high pressure side reduces automatically, and the higher for the pressure and the smaller for the gap, plays to stop working medium to be leaked to low pressure chamber from the hyperbaric chamber.

Main shaft 6 drives rotating disk 8 when rotating, rotating disk 8 drives piston 1 motion (turning to of main shaft 6 is to see that from cylinder cap 2 main shaft 6 clockwise rotates among the figure); The motion of piston 1 is unique rotation around self axis, the motion of rotating disk 8 is synthetic that two kinds of motions are arranged: the one, around the rotation of self axis, another is the centre of sphere that its axis passes through spherical cylinder all the time, and be that summit, cone angle are that (being the conical surface of the inswept above-mentioned cone of axis of rotating disk 8) circumferentially moved on the virtual cone surface of the dead in line of 2 α, axis and main shaft 6 at the centre of sphere with spherical cylinder, the cycle synchronisation that the cycle of moving and main shaft 6 rotate; The motion of above spatial mechanism all is the motion of rotation character, so there is not high oscillating movement spare, the synthetic result of this spatial motion is: piston 1 and rotating disk 8 have the relative swing of one-period property, and the cycle of swing is a times of main axis rotation cycle, and the amplitude of swing is 4 α; Utilize the basic exercise key element of this relative swing as volume-variation, form the V1 working room 4 and the V2 working room 11 of pressure alternate, piston 1 is provided with air flue 3, the inner ball surface of cylinder cap 2 is provided with gas-entered passageway 12 and exhaust passage 13, its structure such as Fig. 2, shown in Figure 3, the spherical surface that utilizes the rotation of piston 1 and piston 1 cooperates with the spherical cylinder internal surface of cylinder cap 2, as the basic exercise key element that all portings are opened, closed, control by air flue 3 and the break-make realization air inlet and the exhaust of gas-entered passageway 12 and exhaust passage 13.

Inserting among the Ordering-the embodiment 14 is as the inserting of piston 1, and also can at the middle part of rotating disk key seat groove be set according to the structure of the piston pin boss of piston and rotating disk in the reality, is provided with in this groove and inserts.According to the concrete structure of centrepin, piston pin boss and rotating disk key seat formation cylinder hinge, described inserting can be arranged in the groove of piston pin boss, also can be arranged in the groove of rotating disk key seat.

In the reality, can also design inserting of another kind of structural type, as shown in figure 14, the end face of inserting is designed to the plane, and the bottom surface of piston pin boss groove with matching also is the plane, and forms sealing movingly, the convenient like this processing method of selecting, manufacture difficulty descends.

In some cases, also can be fixed in the groove inserting, by inserting and cooperating, reach sealing effect with the precision of the fitting surface that contacts inserted.

Claims

1. automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor, it is characterized in that: the cylinder hinge that forms between the centrepin of spherical compressor, rotating disk key seat and the piston pin boss, being provided with one in the groove on the key seat that forms the cylinder hinge inserts, this is inserted and is positioned at bottom portion of groove, it is shaped as the thick sector unit structure in intermediate thin both sides, and with groove and suitable and form sealing movingly respectively with the shape of the external cylindrical surface of the corresponding semicolumn projection of groove.

2. automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor is characterized in that: the external cylindrical surface of the semicolumn projection on the described inner cylindrical surface of inserting and the key seat that forms the cylinder hinge is complementary, and forms sealing movingly; The both ends of the surface of inserting are the plane, form sealing movingly with the two side of groove; The shape of the end face of inserting and groove floor shape are suitable and form sealing movingly; The bi-side of inserting are the plane, and its bi-side of packing into behind the groove of inserting are concordant with the both end sides end face of groove; When a side of the working room of the alternate compression that forms in cylinder hinge both sides is in high pressure conditions, the side pressurized of inserting and being positioned at this working room, to low voltage side one small relatively moving arranged and make to insert, thereby the cylndrical surface of inserting with groove floor and semicolumn projection is reduced near on high-tension side gap, and the higher for the pressure and the smaller for the gap.

3. a kind of automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor according to claim 2 is characterized in that: the described end face of inserting is the arc surface of projection, and the groove floor on the key seat of the cylinder hinge that matches with it also is arc surface.

4. a kind of automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor according to claim 2 is characterized in that: the described end face of inserting is the plane, and the groove floor on the key seat of the cylinder hinge that matches with it also is the plane.

5. a kind of automatical compensation mechanism for sealing clearance of hinges that is used for spherical compressor according to claim 1, it is characterized in that: the concrete structure that forms the cylinder hinge according to centrepin, piston pin boss and rotating disk key seat, described inserting can be arranged in the groove of piston pin boss, also can be arranged in the groove of rotating disk key seat.