CN210152855U

CN210152855U - Double-acting differential combined piston for acetylene compressor

Info

Publication number: CN210152855U
Application number: CN201920679675.1U
Authority: CN
Inventors: 于哲; 于祥恩
Original assignee: Dandong Enwei Chemical Machinery Co Ltd
Current assignee: Dandong Enwei Chemical Machinery Co Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-03-17
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a two differential combination pistons of effect for acetylene compressor, the piston rod comprises a piston rod, the one end outside of piston rod has the low pressure level piston body through the end cap rigid coupling, the bottom rigid coupling of low pressure level piston body have with the low pressure level piston lid of piston rod looks block, the top of low pressure level piston body is equipped with the high pressure level piston, the high pressure level piston passes through piston gland and low pressure level piston assembly looks rigid coupling. This acetylene compressor is with two effect differential type composite piston, reduced the consumption during use, adopted the casting aluminum alloy structure, hollow stiffening rib structure has been made to inside, has alleviateed weight, adds simultaneously and establishes the guide ring and has improved the cooperation precision, avoids the direct friction of piston and cylinder wall, has light in weight, and intensity is high, advantages such as low power dissipation.

Description

Double-acting differential combined piston for acetylene compressor

Technical Field

The utility model relates to a piston technical field specifically is a two effect differential composite piston for acetylene compressor.

Background

When the piston sealing element works, the pressure of liquid can be increased, so that the contact pressure of the sealing element and the cylinder body is increased, the contact width is also increased, the moving friction resistance of the piston is increased, particularly, the piston sealing element of the heavy-duty hydraulic cylinder is required to bear pulse high pressure and high-temperature working conditions formed by ultrahigh pressure instant impact frequently, and the instant high pressure can reach 70MPa or 100 MPa. The existing piston sealing element is made of materials which are not suitable for the high-pressure and high-temperature working condition, the compression resistance of the existing sealing element is not enough, the service life is short, and based on the conditions, the hydraulic cylinder piston sealing ring which can ensure the sealing reliability of the piston, is flexible to move, has high working efficiency and long service life and has good rebound resilience, pressure change and oil resistance is needed, so that the requirement of the actual condition is met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two effect differential composite piston for acetylene compressor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a double-acting differential type combined piston for an acetylene compressor comprises a piston rod, wherein a low-pressure-level piston body is fixedly connected to the outer side of one end of the piston rod through a plug, a low-pressure-level piston cover clamped with the piston rod is fixedly connected to the bottom of the low-pressure-level piston body, a high-pressure-level piston is arranged at the top of the low-pressure-level piston body, and the high-pressure-level piston is fixedly connected with a low-pressure-level piston assembly through a piston gland;

and a baffle abutting against the low-pressure-level piston body is pressed at the bottom of the plug.

Preferably, a high-pressure piston ring and a high-pressure guide ring are sleeved on the top of the outer side wall of the high-pressure piston.

Preferably, the outer side wall of the low-pressure-stage piston body is sleeved with a low-pressure-stage piston ring, and the inner side of the low-pressure-stage piston ring is provided with a low-pressure-stage guide ring sleeved on the low-pressure-stage piston body.

Compared with the prior art, the beneficial effects of the utility model are that: this acetylene compressor is with two effect differential type composite piston, reduced the consumption during use, adopted the casting aluminum alloy structure, hollow stiffening rib structure has been made to inside, has alleviateed weight, adds simultaneously and establishes the guide ring and has improved the cooperation precision, avoids the direct friction of piston and cylinder wall, has light in weight, and intensity is high, advantages such as low power dissipation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the piston comprises a high-pressure-level piston ring, 2, a high-pressure-level guide ring, 3, a high-pressure-level piston, 4, a plug, 5, a baffle, 6, a low-pressure-level piston body, 7, a low-pressure-level guide ring, 8, a low-pressure-level piston ring, 9, a low-pressure-level piston cover, 10, a piston rod, 11 and a piston gland.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a double-acting differential type combined piston for an acetylene compressor comprises a piston rod 10, wherein a low-pressure piston body 6 is fixedly connected to the outer side of one end of the piston rod 10 through a plug 4, the piston body is made of cast aluminum alloy, a hollow reinforcing rib structure is formed in the piston body, the weight is reduced, a low-pressure piston ring 8 is sleeved on the outer side wall of the low-pressure piston body 6, a low-pressure guide ring 7 sleeved on the low-pressure piston body 6 is arranged on the inner side of the low-pressure piston ring 8, a low-pressure piston cover 9 clamped with the piston rod 10 is fixedly connected to the bottom of the low-pressure piston body 6, the piston cover is made of forged aluminum alloy, the piston body and the piston body are subjected to solution artificial aging heat treatment, the strength of the material is exerted to the utmost, two positioning pin holes which are symmetrically distributed are drilled on the end face matched with the piston rod, the lubricating oil guiding device is characterized in that an oil groove is formed in the circumference, the lubricating oil guiding device plays a certain oil scraping role at the same time, lubricating oil is uniformly distributed on the wall of a cylinder, a low-pressure-level piston body 6 and a low-pressure-level piston cover 9 are combined to form a low-pressure-level piston assembly, a high-pressure-level piston 3 is arranged at the top of the low-pressure-level piston body 6, the high-pressure-level piston 3 is fixedly connected with the low-pressure-level piston assembly through a piston gland 11, a high-pressure-level piston ring 1 and a high-pressure-level guide ring 2 are sleeved at the top of the outer side wall of the high-pressure-level piston 3, the matching precision of the high-pressure-level piston 3 and a piston cylinder during working is improved through arranging the guide rings on the outer side walls of the low-level piston body 6 and the high-level piston 3, direct friction between the piston and the, in actual installation, a certain clearance is required between the piston and the low-pressure stage piston in the radial direction, so that the piston has a certain amount of compensation in the radial centering.

And a baffle 5 which is abutted against the low-pressure piston body 6 is pressed at the bottom of the plug 4.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two effect differential type composite piston for acetylene compressor which characterized in that: the piston rod comprises a piston rod (10), wherein a low-pressure-level piston body (6) is fixedly connected to the outer side of one end of the piston rod (10) through a plug (4), a low-pressure-level piston cover (9) clamped with the piston rod (10) is fixedly connected to the bottom of the low-pressure-level piston body (6), a high-pressure-level piston (3) is arranged at the top of the low-pressure-level piston body (6), and the high-pressure-level piston (3) is fixedly connected with a low-pressure-level piston assembly through a piston cover (11);

and a baffle (5) which is abutted against the low-pressure-level piston body (6) is pressed at the bottom of the plug (4).

2. A double-acting differential composite piston for an acetylene compressor according to claim 1, characterized in that: the top of the outer side wall of the high-pressure-stage piston (3) is sleeved with a high-pressure-stage piston ring (1) and a high-pressure-stage guide ring (2).

3. A double-acting differential composite piston for an acetylene compressor according to claim 1, characterized in that: the lateral wall of low pressure level piston body (6) has cup jointed low pressure level piston ring (8), low pressure level piston ring (8) inboard is equipped with low pressure level guide ring (7) of cup jointing on low pressure level piston body (6).