CN206017096U

CN206017096U - A kind of mesohigh piston

Info

Publication number: CN206017096U
Application number: CN201620988137.7U
Authority: CN
Inventors: 夏慧生; 肖思谓
Original assignee: ZIGONG SANQIANG CASINI COMPRESSOR Co Ltd
Current assignee: ZIGONG SANQIANG CASINI COMPRESSOR Co Ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2017-03-15
Anticipated expiration: 2026-08-30

Abstract

A kind of mesohigh piston.Combined by piston body and joint chair, it is characterized in that piston body and joint chair are bolted, increase lock washer between bolt and joint chair, increase O-ring seals between joint chair and piston body, O-ring seals adopt fluorubber material, piston body and joint chair adopt hollow structure, and hollow part diameter can according to circumstances be processed into different size.The utility model improves existing compressor and shakes larger, the short problem of service life.

Description

A kind of mesohigh piston

Technical field

The utility model is related to a kind of mesohigh piston.

Background technology

In piston compressor multi-stage compression, mesohigh level piston is often designed to a form, and right-hand member neck is pressed by one Board lives to be connected on corresponding low-pressure piston, moves when driving backward stroke of the piston；Piston is hollow to be arranged for mitigating piston weight, Shrouding act as the clearance for preventing hollow space from becoming cylinder, so as to reduce volumetric efficiency.In balanced opposed type compressor, it is desirable to phase Less to arranging (two ends) piston weight difference, i.e., as far as possible equal toward complex inertia mass, so as to avoid the formation of larger vibration.When two When end piston diameter difference is larger, realize that above-mentioned requirements are just highly difficult, due to the restriction of neck size in piston, hollow space Aperture can not be too big, and otherwise, neck can be pulled off, the stress that born in reciprocating motion of the pistons because of neck or larger, Including the frictional force that negative pressure during air-breathing and piston ring, support ring are produced, when especially in machine operation, lead because of the heat for producing When activation plug ring, support ring thermal expansion, its frictional force is even more larger.Therefore piston neck will ensure certain intensity, hollow hole Footpath has just limited.Therefore there are processing difficulties in existing structure and reciprocating mass is unequal causes vibration of compressor larger, compress Machine reliability decrease, service life of a machine shorten.

Content of the invention

The utility model provide a kind of mesohigh piston, solve volumetric efficiency in prior art low, it is difficult to avoid compared with Big vibrations, in piston, neck is easily broken, piston structure processing difficulties, and compressor reliability declines, the problem of the lost of life.

Technical solutions of the utility model are as follows：It is made up of with piston body joint chair, piston body adopts hollow structure, piston is external Wall is cased with support ring and piston ring, and joint chair is hollow structure, and joint chair is bolted with piston body.Piston body adopts density 2.7 7.8 alloy, material of the joint chair using intensity σ b >=530MPa increase lock washer, joint chair and work between joint chair and bolt Increase O-ring seals between cock body, O-ring seals adopt fluorubber material.Piston body and joint chair hollow space diameter can bases Situation is processed into different size.

The beneficial effects of the utility model：

1. piston is divided into joint chair can make piston easier to process with piston body two parts；

2. joint chair and piston body hollow space adjustable aperture size, can make the reciprocal of balanced opposed type compressor piston two ends Inertia mass is more nearly, and the vibrations for reducing machine extend service life of a machine；

3. increase packing ring between joint chair and bolt, can prevent bolt from loosening is produced because of vibrations in piston operation；

4. increase O-ring seals between joint chair and piston body, can prevent piston body hollow space from becoming the clearance of cylinder；

5. joint chair is using the higher material of intensity, the problem for effectively avoiding easily being pulled off because joint chair section is less；

6. piston body is made using lighter material in the case of proof strength, convenient processing, it is easy to install.

Description of the drawings

Fig. 1 is 1 schematic diagram of the utility model embodiment

In Fig. 1：1. joint chair；2. bolt；3. lock washer；4.O shape packing rings；5. piston body；6. support ring；7. piston ring

Specific embodiment

Piston is divided into piston body and joint chair two parts, joint chair is bolted with piston body, between bolt and joint chair Increase lock washer, piston body increases O-ring seals with joint chair coupling part, and joint chair adopts hollow structure with piston body.

Embodiment 1：

As shown in figure 1, piston is made up of with piston body 5 joint chair 1, joint chair 1 is by bolt 2 and piston for the utility model structure Body 5 connects, and increases lock washer 3 between joint chair 1 and bolt 2；Space between joint chair 1 and piston 5 increases O-ring seals 4, living The outer wall nesting support ring 6 of cock body 5 and piston ring 7.Piston body is adopted using high-strength light aluminium alloy or alloy steel material, joint chair With Fine Steel Casting iron or alloy steel material.

Claims

1. a kind of mesohigh piston, it is characterised in that：It is made up of with piston body joint chair, piston body adopts hollow structure, piston body Outer wall is cased with support ring and piston ring, and joint chair is hollow structure, and joint chair is bolted with piston body.

2. mesohigh piston as described in the appended claim 1, it is characterised in that：Alloy of the piston body using density 2.7 7.8 Material.

3. mesohigh piston as described in the appended claim 1, it is characterised in that：Material of the joint chair using intensity σ b >=530MPa Material.

4. mesohigh piston as described in the appended claim 1, it is characterised in that：Increase lock washer between the joint chair and bolt.

5. mesohigh piston as described in the appended claim 1, it is characterised in that：Increase the sealing of O shapes between the joint chair and piston body Circle.

6. mesohigh piston as claimed in claim 5, it is characterised in that：The O-ring seals adopt fluorubber material.

7. mesohigh piston as described in the appended claim 1, it is characterised in that：The piston body hollow space diameter can be according to circumstances It is processed into different size.

8. mesohigh piston as described in the appended claim 1, it is characterised in that：The joint chair hollow space diameter according to circumstances can add Work is into different size.

9. mesohigh piston as described in the appended claim 1, it is characterised in that：The piston body can be closed using high-strength light aluminium Gold or alloy steel material.

10. mesohigh piston as described in the appended claim 1, it is characterised in that：The joint chair can adopt Fine Steel Casting iron or conjunction Golden Steel material.