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CN-224214372-U - Sealing structure of oval rotor compressor

CN224214372UCN 224214372 UCN224214372 UCN 224214372UCN-224214372-U

Abstract

The utility model discloses a sealing structure of an elliptic rotor compressor, which comprises a cylinder body, cylinder covers respectively fixed on two end surfaces of the cylinder body, elliptic rotors movably arranged in the cylinder body, and shaft seal assemblies respectively embedded and arranged on two end surfaces of the elliptic rotors. The end face shaft seal adopts triple combination of a metal sealing strip, a nonmetal sealing strip and an adhesive tape, combines a spring pre-tightening structure, forms dynamic compensation seal on the end face of a rotor, realizes floating self-adaption of an omega groove and a column sealing strip of a radial sealing assembly, provides radial constant pressure for a first spring piece, is matched with a trapezoid sealing strip and a second spring piece to block side gap leakage, the V-shaped angle seal of the angle seal assembly is pre-tightened through the second spring, the outer side face of the V-shaped angle seal is tangent with a molded line of the shaft seal assembly, the inner side face of the V-shaped angle seal is tangent with the molded line of the rotor, the triangular leakage area at the junction of the cylinder body, the cylinder cover and the rotor is thoroughly sealed, the global sealing structure is changed through an elastic element self-adaption elliptic track, the abrasion rate is reduced, and the leakage amount is reduced.

Inventors

  • LIN XIANYAN
  • LIU YUNSHENG
  • BIAN XIAOLIN
  • HUO YONGXIAN
  • LI HUIMING

Assignees

  • 江西明聚科技发展有限公司

Dates

Publication Date
20260508
Application Date
20250625

Claims (10)

  1. 1. A sealing structure of an elliptical rotor compressor, comprising: a cylinder (1); Cylinder covers (2) respectively fixed on two end surfaces of the cylinder body (1); An elliptical rotor (3) movably mounted inside the cylinder body (1); Shaft seal assemblies (4) which are respectively embedded and installed at two end surfaces of the oval rotor (3); radial seal assemblies (5) which are respectively embedded and installed on the triangle of the inner wall of the cylinder body (1); And the corner seal assemblies (6) are respectively positioned at two ends of the radial seal assembly (5), and the corner seal assemblies (6) and the cylinder cover (2) are embedded and installed.
  2. 2. The sealing structure of the oval rotor compressor of claim 1, wherein a plurality of oval sealing grooves (31) are formed in two end faces of the oval rotor (3), the cross section of each sealing groove (31) is trapezoid, a plurality of second spring grooves (32) are formed in the bottoms of the sealing grooves (31) at equal intervals, and second spring guide posts (33) are fixed at the bottoms of the second spring grooves (32).
  3. 3. The seal structure of an oval rotor compressor of claim 2, wherein the shaft seal assembly (4) comprises a metal seal strip (41), a nonmetal seal strip (42) and a rubber strip (43), the metal seal strip (41) is embedded in the seal groove (31), the nonmetal seal strip (42) is tightly attached to one end, far away from the seal groove (31), of the metal seal strip (41), the rubber strip (43) is embedded and installed between the nonmetal seal strip (42) and the metal seal strip (41), and coaxial penetrating mounting holes (45) are formed in the metal seal strip (41), the nonmetal seal strip (42) and the rubber strip (43) and used for fixing pieces to penetrate through to fixedly connect the metal seal strip (41) and the rubber strip (42) is provided with a plurality of grooves on the surface, and the section of the shaft seal assembly (4) is trapezoid.
  4. 4. The sealing structure of the oval rotor compressor of claim 3, wherein a plurality of spring grooves (411) are formed in one end, close to the sealing groove (31), of the metal sealing strip (41), spring guide posts (412) are fixed at the bottoms of the spring grooves (411), the spring grooves (411) correspond to the spring grooves (32) one by one, a first spring is connected between the spring grooves (411) and the spring grooves (32), and the first spring is located on the outer sides of the spring guide posts (412) and the spring guide posts (33).
  5. 5. The sealing structure of the oval rotor compressor of claim 1, wherein the radial sealing assembly (5) comprises a sliding block (51), a cylindrical sealing strip (52), a spring limiting table (53) and a first spring piece (54), an omega groove is formed in the inner end surface of the sliding block (51), the cylindrical sealing strip (52) is movably arranged in the omega groove, the width of a notch of the omega groove is smaller than the diameter of the cylindrical sealing strip (52), and the inner caliber of the omega groove is larger than the diameter of the cylindrical sealing strip (52).
  6. 6. The seal structure of an elliptic rotor compressor of claim 5 wherein the spring limiting platforms (53) are fixed on both sides of the outer end of the slide block (51), and the first spring piece (54) is fixed between the spring limiting platforms (53) in an arc shape.
  7. 7. The sealing structure of the oval rotor compressor of claim 6, wherein two grooves (55) are symmetrically formed in the inner end face of the sliding block (51) and located on two sides of the omega-shaped groove, trapezoidal sealing strips (56) are inserted into the grooves (55), arc-shaped second spring pieces (57) are fixed at the outer ends of the trapezoidal sealing strips (56), and the second spring pieces (57) are connected with the bottoms of the grooves (55).
  8. 8. The sealing structure of the oval rotor compressor of claim 1, wherein a V-shaped angle sealing groove (21) is formed in a triangular shape at one end, close to the cylinder body (1), of the cylinder cover (2), a first spring groove (22) is formed in two sides of the groove bottom of the V-shaped angle sealing groove (21), and a first spring guide post (23) is fixed at the groove bottom of the first spring groove (22).
  9. 9. The sealing structure of the oval rotor compressor of claim 8, wherein the angle sealing component (6) comprises a V-shaped angle seal (61) and a spring guide post IV (62), the V-shaped angle seal (61) is inserted into the V-shaped angle sealing groove (21), the V-shaped angle seal (61) is composed of a metal V-shaped sealing strip, a nonmetal V-shaped sealing strip and a V-shaped adhesive tape, the nonmetal V-shaped sealing strip is fixed at one end, far away from the V-shaped angle sealing groove (21), of the metal V-shaped sealing strip, the V-shaped adhesive tape is embedded and installed between the nonmetal V-shaped sealing strip and the metal V-shaped sealing strip, the spring guide post IV (62) is provided with a pair of spring guide posts and is respectively fixed at two sides of the metal V-shaped sealing strip, the spring guide post IV (62) corresponds to the spring guide post IV (23), a spring II is connected between the metal V-shaped sealing strip and the spring groove IV (22), and the spring guide post IV (62) is located outside the spring guide post IV (23).
  10. 10. The seal structure of an elliptic rotor compressor according to claim 9, wherein the outer side surface of the V-shaped angular seal (61) is tangent to the molded line of the shaft seal assembly (4), and the inner side surface of the V-shaped angular seal (61) is tangent to the molded line of the elliptic rotor (3).

Description

Sealing structure of oval rotor compressor Technical Field The utility model relates to the technical field of rotor compressors, in particular to a sealing structure of an elliptic rotor compressor. Background The rotor type compressor realizes gas high-frequency compression by driving the rotor to rotate through an engine or a motor, the sealing performance of the rotor type compressor directly influences the compression efficiency and the service life, the sealing structure of the traditional circular rotor compressor is relatively mature, the elliptic rotor is large in change of line curvature, and dynamic leakage gaps are easy to occur between the sealing strip and the cylinder body and between the sealing strip and the cylinder cover in the high-speed rotation process. At present, in an oval rotor compressor, a sealing blind area exists in a triangular area formed between an end face axial seal of an oval rotor and a radial seal of a cylinder body, axial sealing abrasion is bad, a radial sealing strip is easy to eccentrically abrade under the action of centrifugal force (rotor turning tangential force), a conventional sealing structure is difficult to adapt to continuous deformation of an oval profile (difficult to adapt to dynamic changes of the sealing profile and a space position), and the problems of increased leakage paths and abrasion and reduced energy efficiency are caused. Disclosure of utility model The present utility model is directed to overcoming the drawbacks of the prior art and providing a sealing structure of an oval rotor compressor, so as to solve the problems set forth in the background art. A sealing structure of an elliptical rotor compressor, comprising: A cylinder; cylinder covers respectively fixed on two end surfaces of the cylinder body; An elliptical rotor movably mounted inside the cylinder; Shaft seal assemblies respectively embedded and installed on two end surfaces of the oval rotor; Radial seal assemblies respectively embedded and installed on the triangular inner wall of the cylinder body; And the corner seal assemblies are respectively positioned at two ends of the radial seal assembly, and are embedded and installed with the cylinder cover. Preferentially, a plurality of elliptical sealing grooves are formed in the two end faces of the elliptical rotor, the cross section of each sealing groove is trapezoid, a plurality of second spring grooves are formed in the bottoms of the sealing grooves at equal intervals, and second spring guide posts are fixed at the bottoms of the second spring grooves. Preferentially, the shaft seal assembly comprises a metal sealing strip, a nonmetal sealing strip and a rubber strip, wherein the metal sealing strip is inlaid in the sealing groove, the nonmetal sealing strip is clung to one end of the metal sealing strip, which is far away from the sealing groove, the rubber strip is embedded and installed between the nonmetal sealing strip and the metal sealing strip, and mounting holes which coaxially penetrate through the metal sealing strip, the nonmetal sealing strip and the rubber strip are formed in the metal sealing strip, the nonmetal sealing strip and the rubber strip and used for fixing pieces to penetrate through to fixedly connect the metal sealing strip, a plurality of grooves are formed in the surface of the nonmetal sealing strip, and the section of the shaft seal assembly is trapezoid. Preferentially, one end of the metal sealing strip, which is close to the sealing groove, is provided with a plurality of third spring grooves, third spring guide posts are fixed at the bottoms of the third spring grooves, the third spring grooves are in one-to-one correspondence with the second spring grooves, first springs are connected between the third spring grooves and the second spring grooves, and the first springs are located on the outer sides of the third spring guide posts and the second spring guide posts. Preferentially, the radial sealing assembly comprises a sliding block, a cylindrical sealing strip, a spring limiting table and a first spring piece, wherein an omega-shaped groove is formed in the inner end face of the sliding block, the cylindrical sealing strip is movably arranged inside the omega-shaped groove, the width of a notch of the omega-shaped groove is smaller than the diameter of the cylindrical sealing strip, and the inner caliber of the omega-shaped groove is larger than the diameter of the cylindrical sealing strip. Preferentially, the spring limiting tables are fixed on two sides of the outer end of the sliding block, and the first spring piece is fixed between the spring limiting tables in an arc shape. Preferentially, two grooves are symmetrically formed in the inner end face of the sliding block and located on two sides of the omega-shaped groove, trapezoidal sealing strips are inserted into the grooves, arc-shaped second spring pieces are fixed at the outer ends of the trapezoidal sealing strips, and the