CN211738020U

CN211738020U - Novel packing sealing ring of reciprocating compressor

Info

Publication number: CN211738020U
Application number: CN202020308036.7U
Authority: CN
Inventors: 孙士东; 宋德明; 方列泽
Original assignee: Zhejiang Changlong Petrochemical Equipment Co ltd
Current assignee: Zhejiang Changlong Petrochemical Equipment Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-10-23
Anticipated expiration: 2030-03-13

Abstract

The utility model provides a reciprocating compressor's novel packing sealing ring, includes sealing ring, connection platform, the sealing ring is by two semi-circular sealing member that the structure is unanimous, semi-circular sealing member's both ends all are equipped with the step that supplies the connection platform installation, set up the U-shaped recess I that supplies the extension spring installation in semi-circular sealing member's the periphery, be equipped with radial opening A between two semi-circular sealing member, connect through two connection platform interference fit between two semi-circular sealing member, be equipped with the U-shaped recess II that supplies the extension spring installation in the connection platform periphery, U-shaped recess II forms complete annular groove with U-shaped recess I, be equipped with the radial opening B that the guide gas played the sealed effect between connection platform and the semi-circular sealing member: simple structure, low cost have reduced simultaneously and have produced unnecessary assembly error when assembling, have improved and have filled the fit precision of the axial clearance between the box, utilize less sealing element moreover, reach sealed effectual purpose.

Description

Novel packing sealing ring of reciprocating compressor

Technical Field

The utility model relates to a reciprocating compressor field especially makes a reciprocating compressor's novel packing sealing ring.

Background

At present, the sealing ring for the existing reciprocating compressor mainly comprises a tangential ring and a radial ring combined sealing ring set (as shown in fig. 1); although the two combined sealing rings can seal, due to the structural limitation, a plurality of sealing elements are provided, the assembly precision requirement is high during assembly, the production efficiency is directly reduced, and the cost is improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects existing in the prior art, the utility model provides a reciprocating compressor's novel packing sealing ring, which comprises a sealing ring and a connecting platform.

The utility model provides a technical scheme that prior art problem adopted is: the sealing ring is by two semi-circular sealing members that the structure is unanimous, semi-circular sealing member's both ends all are equipped with the step that supplies the connection platform installation, and the outer terminal surface of step is the tangent plane, set up U-shaped recess I that supplies the extension spring installation in semi-circular sealing member's the periphery, be equipped with radial opening A between two semi-circular sealing member, connect through two connection platform interference fit between two semi-circular sealing member, connection platform's structure is corresponding with the structure of step, is equipped with the U-shaped recess II that supplies the extension spring installation in the connection platform periphery, and U-shaped recess II forms complete annular groove with U-shaped recess I, be equipped with the radial opening B that the guide gas played sealing effect between connection platform and the semi-.

Compared with the prior art, the beneficial effects of the utility model are that: the sealing device has the advantages of simple structure and low cost, reduces redundant assembly errors during assembly, improves the matching precision of the axial clearance between the sealing device and the stuffing box, and achieves the purpose of good sealing effect by using fewer sealing elements.

Drawings

FIG. 1 is a schematic cross-sectional view of a prior art unitized seal ring assembly;

FIG. 2 is a schematic structural diagram of a tangential ring of a conventional unitized seal ring set;

FIG. 3 is a schematic view of a radial ring of a conventional unitized seal ring set;

FIG. 4 is a schematic structural view of the present invention;

fig. 5 is a schematic front view of the present invention;

fig. 6 is a schematic side view of the present invention;

in the figure, 1, a semicircular sealing element, 101, a step, 102, U-shaped grooves I and 2, radial openings A and 3, a connecting platform, 301, U-shaped grooves II and 4, radial openings B and 5, an annular groove, 6, a tangential ring, 7 and a radial ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments, and a novel packing ring for a reciprocating compressor comprises a sealing ring and a connecting platform 3, wherein the sealing ring is composed of two semicircular sealing members 1 with the same structure, the sealing ring is used for being matched with a piston rod, the arrow in fig. 4 shows the position where the piston rod is installed, the outward leakage of the gas in the cylinder along the gap between the cylinder and the outer circular surface of the moving piston rod is prevented, both ends of the semicircular sealing members 1 are respectively provided with a step 101 for the installation of the connecting platform, the outer end surface of the step 101 is a tangent plane, the outer periphery of the semicircular sealing members 1 is provided with a U-shaped groove i 102 for the installation of a tension spring, a radial opening a2 is arranged between the two semicircular sealing members 1, the radial opening a2 plays a role in compensating the abrasion between the two semicircular sealing members 1, and the two semicircular sealing members 1 are connected by the, the structure of the connecting platform 3 corresponds to that of the step 101, a U-shaped groove II 301 for installing a tension spring is arranged on the periphery of the connecting platform 3, the U-shaped groove II 301 and the U-shaped groove I102 form a complete annular groove 5, a radial opening B4 is arranged between the connecting platform 3 and the semicircular sealing parts 1, the radial opening B4 guides air flow to a sealing space and presses the two semicircular sealing parts to a piston rod, when the sealing ring is installed on the piston rod, the two semicircular sealing parts 1 are respectively sleeved on the outer circular surface of the piston rod, the two semicircular sealing parts 1 are connected in an interference fit mode through the two connecting platforms 3, and finally the two semicircular sealing parts 1 and the two connecting platforms 3 are clamped tightly through the tension spring installed in the annular groove to form a complete packing sealing ring, when the piston rod moves, the two semicircular sealing parts 1 are pressed on the piston rod by air to play, the radial opening A2 between two semicircular sealing elements 1 can make two semicircular sealing elements 1 wear back in certain extent, two semicircular sealing elements 1 can automatic compensation, two semicircular sealing elements 1 and two radial opening B4 between the connection platform 3 can be with gaseous leading-in sealing ring and the radial clearance between the stuffing box in, play the effect of compressing tightly the sealing ring on the piston rod, through foretell scheme, compare with traditional tangential ring 6 and radial ring 7 combination formula seal ring group, change into a sealing ring, have simple structure, low cost's advantage, produced unnecessary assembly error when having reduced the assembly, improved the cooperation precision with the axial clearance between the stuffing box, and utilize less sealing element, reach sealed effectual purpose.

The utility model discloses a set up two consistent semi-circular sealing member of structure 1 and two connection platform 3, two semi-circular sealing member 1 are connected through 3 interference fit of two connection platform, compare with traditional tangential ring 6 and radial 7 combination formula seal ring groups, change into one sealing ring, produce unnecessary assembly error when having reduced the assembly, improved the fit precision of the axial clearance between sealing ring and the packing box, utilize less sealing element moreover, reach sealed effectual purpose.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a reciprocating compressor's novel packing sealing ring, includes sealing ring, connection platform, its characterized in that: the sealing ring is by two semi-circular sealing members that the structure is unanimous, semi-circular sealing member's both ends all are equipped with the step that supplies the connection platform installation, set up U-shaped recess I that supplies the extension spring installation in semi-circular sealing member's the periphery, be equipped with radial opening A between two semi-circular sealing member, connect through two connection platform interference fit between two semi-circular sealing member, be equipped with the U-shaped recess II that supplies the extension spring installation in the connection platform periphery, U-shaped recess II forms complete annular groove with U-shaped recess I, be equipped with radial opening B between connection platform and the semi-circular sealing member.

2. The new packing seal ring of a reciprocating compressor of claim 1, wherein: the outer end face of the step is a tangent plane.

3. The new packing seal ring of a reciprocating compressor of claim 1, wherein: the structure of the connecting platform corresponds to that of the step.