CN206754370U

CN206754370U - Piston compressor leak sealing ring group

Info

Publication number: CN206754370U
Application number: CN201720603381.1U
Authority: CN
Inventors: 查强
Original assignee: CHONGQING RONGNENG ELECTROMECHANICAL EQUIPMENT Co Ltd
Current assignee: Chongqing Rongneng Mechanical And Electrical Equipment Co Ltd
Priority date: 2017-05-26
Filing date: 2017-05-26
Publication date: 2017-12-15
Anticipated expiration: 2027-05-26

Abstract

The utility model discloses a kind of piston compressor leak sealing ring group, including leak sealing ring shell, a choke ring and a sealing ring in leak sealing ring shell, sealing ring is put together using three valves and is cased with choke ring extension spring outside, choke ring includes the first choke ring and the second choke ring, second choke ring set is in the path section of the first choke ring and both pass through contact of incline plane, first choke ring, second choke ring is put together using three valves, outside the big footpath section of first choke ring, choke ring extension spring is cased with respectively outside second choke ring, in the presence of inclined-plane, pulling force of the choke ring extension spring to contract, translate into the power of axial movement, so as to promote the second choke ring to be moved axially with respect to the first choke ring with compensating axial clearance.The structure energy adjust automatically axial direction gap, in the case where leak sealing ring group axial gap can not accurately be chosen, leak sealing ring group is in optimum Working all the time, ensure the good sealing property of compressor packing box.

Description

Piston compressor leak sealing ring group

Technical field

The utility model is mainly used in piston compressor, and in particular to the leak sealing ring group knot on piston compressor Structure.

Background technology

As shown in figure 4, the leak sealing ring group A on existing piston compressor uses plane sealing structure, it is close by gas leakage Seal ring shell 1, and 2, sealing rings 3 of a choke ring in leak sealing ring shell 1 and two choke rings drawings Spring 4 forms, and choke ring 2 and sealing ring 3 are respectively adopted three valves and be put together, and by the banding of choke ring extension spring 4 of overcoat one Rise.Leak sealing ring group A is one of part of compressor seal stuffing box, and compressor seal stuffing box includes box body B, and primary seal ring group C, the leak sealing ring group A and frizing ring group D being sequentially arranged in box body B, primary seal ring group C with Relieving device E is provided between leak sealing ring group A.And exist axially between leak sealing ring group A choke ring 2 and sealing ring 3 Gap, to adapt to the expansion requirements of choke ring 2 and sealing ring 3.

This sealing structure is widely used in the leak sealing of compressor, but because terminal position gas pressure is smaller, such as hinders Axial gap designs between compression ring and sealing ring it is unreasonable (gap is relevant with temperature, because operating temperature can not accurately be estimated, The gap can not accurately calculate), it can often cause leak sealing not tight.

Utility model content

The utility model intend provide it is a kind of can adjust automatically axial direction gap leak sealing ring group, to solve leak sealing ring In the case that group axial gap can not accurately be chosen, leak sealing ring group is in optimum Working all the time, ensure compressor The good sealing property of stuffing box.

Technical scheme is used by the utility model：A kind of piston compressor leak sealing ring group, including gas leakage Sealing ring shell, and a choke ring and a sealing ring in leak sealing ring shell, the sealing ring use Three valves are put together and are cased with choke ring extension spring outside, and the choke ring includes the first choke ring and the second choke ring, the second choke Ring set is in the path section of the first choke ring and both are spelled by contact of incline plane, the first choke ring, the second choke ring using three valves Conjunction forms, and the big footpath section of the first choke ring is outer, is cased with choke ring extension spring respectively outside the second choke ring, in the presence of inclined-plane, The extension spring of choke ring translates into the power of axial movement to the pulling force of contract, so as to promote relative first resistance of the second choke ring Compression ring is moved axially with compensating axial clearance.

As the preferred of such scheme, the first choke ring and the second choke ring the straight mouth split of three valves is respectively adopted and Into sealing ring is put together using three valve angles, and sealing effectiveness is more preferable.

Further, the bottom of the first choke ring, be correspondingly arranged on blind hole at the top of sealing ring, and installed in blind hole There is stop pin, prevent from relatively rotating between the first choke ring and sealing ring during axial movement.

The beneficial effects of the utility model：By the way that choke ring is divided into two, and by contact of incline plane, make choke ring extension spring Be changed into the power of axial movement to the pulling force of contract, so as to promote the second choke ring with respect to the first choke ring move axially with Compensating axial clearance, untill forming effective sealing.The structure energy adjust automatically axial direction gap, between leak sealing ring group axial direction In the case that gap can not accurately be chosen, leak sealing ring group is in optimum Working all the time, ensure that compressor packing box is good Good sealing property.

Brief description of the drawings

Fig. 1 is scheme of installation of the leak sealing ring group on compressor packing box after improving.

Fig. 2 is the assembling view of choke ring, sealing ring and choke ring extension spring in Fig. 1.

Fig. 3 is the structural representation of choke ring, sealing ring and choke ring extension spring in Fig. 1.

Fig. 4 is scheme of installation of the leak sealing ring group on compressor packing box before improving.

Embodiment

The utility model is described in further detail in conjunction with accompanying drawing：

With reference to shown in Fig. 1-Fig. 3, a kind of piston compressor leak sealing ring group A, mainly by leak sealing ring shell 1st, choke ring 2, sealing ring 3 and choke ring extension spring 4 form.

Choke ring 2 and sealing ring 3 each one, in leak sealing ring shell 1.Sealing ring 3 using three valve splits and Choke ring extension spring 4 is cased with into simultaneously outer, choke ring 2 is made up of the first choke ring 2a and the second choke ring 2b.Second choke ring 2b covers In the first choke ring 2a path section and both are contacted by inclined-plane 2c.First choke ring 2a, the second choke ring 2b use three Valve is put together, and choke ring extension spring 4 is cased with respectively outside the first choke ring 2a big footpath section, outside the second choke ring 2b.

In the presence of inclined-plane 2c, choke ring extension spring 4 translates into the power of axial movement to the pulling force of contract, from And the second choke ring 2b is promoted to be moved axially with respect to the first choke ring 2a with compensating axial clearance.

Preferably, the first choke ring 2a and the second choke ring 2b is respectively adopted the straight mouth of three valves and is put together, and sealing ring 3 uses Three valve angles are put together.

In addition, the first choke ring 2a path section and big footpath section are contour, the second choke ring 2b is small with the first choke ring 2a's Footpath section is contour.First choke ring 2a bottom, the top of sealing ring 3 is correspondingly arranged on blind hole, and anti-rotation is provided with blind hole Pin 5, to prevent both from relatively rotating.

Leak sealing ring group A is one of part of compressor seal stuffing box, compressor seal stuffing box bag Box body B is included, and primary seal ring group C, the leak sealing ring group A and frizing ring group D being sequentially arranged in box body B, in primary seal Relieving device E is provided between ring group C and leak sealing ring group A.

Claims

1. a kind of piston compressor leak sealing ring group, including leak sealing ring shell (1), and installed in leak sealing A choke ring (2) and a sealing ring (3) in ring shell (1), the sealing ring (3) is put together using three valves and overcoat There is choke ring extension spring (4), it is characterised in that：The choke ring (2) includes the first choke ring (2a) and the second choke ring (2b), the Two choke rings (2b) are enclosed in the path section of the first choke ring (2a) and both are contacted by inclined-plane (2c), the first choke ring (2a), the second choke ring (2b) are put together using three valves, and the big footpath section of the first choke ring (2a) is outer, the second choke ring (2b) Outer to be cased with choke ring extension spring (4) respectively, in the presence of inclined-plane (2c), choke ring extension spring (4) will change to the pulling force of contract For the power of axial movement, so as to promote the second choke ring (2b) to move axially with respect to the first choke ring (2a) to compensate between axial direction Gap.

2. the piston compressor leak sealing ring group as described in claim 1, it is characterised in that：The first choke ring (2a) and the second choke ring (2b) are respectively adopted the straight mouth of three valves and are put together, and sealing ring (3) is put together using three valve angles.

3. the piston compressor leak sealing ring group as described in claim 1 or 2, it is characterised in that：First choke The bottom of ring (2a), sealing ring are correspondingly arranged on blind hole at the top of (3), and stop pin (5) is provided with blind hole.

4. the piston compressor leak sealing ring group as described in claim 3, it is characterised in that：The first choke ring The path section of (2a) and big footpath section are contour, and the path section of the second choke ring (2b) and the first choke ring (2a) is contour.