CN215890376U

CN215890376U - Piston body structure convenient to disassemble

Info

Publication number: CN215890376U
Application number: CN202122425600.0U
Authority: CN
Inventors: 胡葵; 谭锐; 李伟峰; 雷军; 唐超; 周涛; 敬成
Original assignee: Wuhan Qidakang Energy Equipment Co ltd
Current assignee: Wuhan Qidakang Energy Equipment Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-02-22
Anticipated expiration: 2031-10-09

Abstract

The utility model provides a piston body structure convenient to disassemble, which comprises a piston body and a piston fixing block, wherein a piston rod sealing ring is installed on the inner wall of the piston body, the piston body is provided with a piston rod body through the piston rod sealing ring, the outer side of the piston rod body is provided with a fixing groove, and the inner side of the fixing groove is provided with the piston fixing block.

Description

Piston body structure convenient to disassemble

Technical Field

The utility model relates to the technical field of compressor pistons, in particular to a piston body structure convenient to disassemble.

Background

The piston body is a core component of a gas compressor, and works under high temperature, high pressure, high speed, poor lubrication conditions, and is subjected to alternating mechanical and thermal loads. The piston body has the functions of forming a pressurizing cavity together with the cylinder cover, the cylinder wall and the like, bearing the gas pressure in the cylinder, and transmitting acting force to the piston through the piston rod so as to compress gas. The piston and the piston rod of the existing gas compressor are connected and fastened in a threaded manner frequently, a fastening screw is tightened to prevent looseness, and the piston body bears large force in the reciprocating operation process, so that the looseness is easy to occur and the cylinder is damaged. In addition, the piston body of the large-scale compressor is generally large in structural size, the pre-tightening force required by thread fastening is large, the large-scale compressor needs special tools for installation, the large-scale compressor is difficult to disassemble in a limited space and can only be returned to a factory for replacement at times, and great influence is brought to production and operation of users. In addition, on the occasions of high hydrogen sulfide content or pressurization of gas media such as pure hydrogen, the thread structure is more easily corroded by hydrogen, the hydrogen embrittlement phenomenon is generated, the plasticity and strength of a piston body material are reduced, and the piston is cracked or the piston rod is broken.

The existing piston body structure has the following defects:

1. the utility model discloses a conveniently-disassembled piston, which comprises a plug body and a rod body, wherein two sealing grooves are annularly formed in the left side of the surface of the plug body, a placing groove is formed in the center of the right side surface of the plug body, the left side of the rod body extends to an inner cavity of the placing groove and is in contact with the left side of the inner cavity of the placing groove, a threaded sleeve is sleeved on the right side of the surface of the rod body, a connecting ring is fixedly connected to the right side of the threaded sleeve, and screw holes are formed in the top and the bottom of the right side surface of the plug body. According to the piston, the placing groove, the positioning hole, the pressing plate, the inner hexagon bolt, the screw hole, the movable hole, the groove and the positioning plate are arranged and used in a matched mode, the piston can be quickly disassembled, so that the time consumed for disassembling the piston is short, the problem that the piston is low in disassembling efficiency due to the fact that the piston body and the rod body cannot be quickly disassembled after the piston is damaged is solved, the practicability of the piston is greatly improved, but the piston body structure is still troublesome to disassemble, and troubles are caused to workers.

2. The traditional piston body structure is provided with a thread structure, so that the piston body is not safe enough, and the service life cannot be prolonged.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a piston body structure convenient to disassemble, and aims to solve the problems that a compressor piston and a piston rod provided in the background technology are easy to loosen, difficult to assemble and disassemble, easy to be corroded by hydrogen and the like in a threaded connection and fastening mode.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the piston body is provided with a piston rod sealing ring, the piston body is provided with a piston rod body through the piston rod sealing ring, a fixing groove is formed in the outer side of the piston rod body, and the piston fixing block is arranged on the inner side of the fixing groove.

Preferably, the outer side of the piston body is provided with a first sealing groove, and the inner side of the first sealing groove is sleeved with a piston sealing ring.

Preferably, the outside of piston rod body has seted up the retaining ring groove, and the retaining ring groove is located one side of fixed slot, and the inboard cover in retaining ring groove has axle circlip, and the second seal groove has been seted up in the outside of piston rod body, and the inboard and the piston rod sealing washer looks gomphosis of second seal groove, and the one end outside of piston rod body has seted up anti-skidding line.

Preferably, the outside of piston fixed block is installed the gland, and the gland is located the outside of piston rod body.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the piston body formed by the piston rod body and the piston body adopts a thread-free locking structure, the piston body and the piston rod body are locked by the elastic check ring for the shaft, the gland and the piston fixing block, no pretightening force is required during installation, no special tool is required, the piston body on the compressor can be conveniently and rapidly installed and disassembled, the installation efficiency of the piston body of the compressor is improved, and the on-site overhaul and maintenance are easy.

2. According to the utility model, the piston rod body and the piston body are not provided with threads, so that the structure strength is high, the axial load is large, the piston is safer, the thread-free structure can effectively avoid the hydrogen embrittlement phenomenon in the occasions of high hydrogen sulfide content or pure hydrogen gas and other gas medium pressurization, and the service life of the piston body is longer and the piston is safer.

Drawings

FIG. 1 is a schematic view of the overall exploded structure of the present invention;

FIG. 2 is a schematic view of the piston body structure of the present invention;

FIG. 3 is a schematic structural diagram of a piston rod body according to the present invention;

fig. 4 is a schematic view of the piston fixing block structure of the present invention.

In the figure: 1. a piston body; 101. a first seal groove; 102. a piston rod seal ring; 103. a piston seal ring; 2. a piston rod body; 201. a retainer groove; 202. fixing grooves; 203. a second seal groove; 204. anti-skid lines; 205. a circlip for the shaft; 3. a piston fixing block; 301. and (7) pressing the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a piston body structure convenient to disassemble comprises a piston body 1 and a piston fixing block 3, wherein a piston rod sealing ring 102 is installed on the inner wall of the piston body 1, the piston body 1 is provided with a piston rod body 2 through the piston rod sealing ring 102, the outer side of the piston rod body 2 is provided with a fixing groove 202, the inner side of the fixing groove 202 is provided with the piston fixing block 3, the piston body 1 provides a position for installing the piston rod body 2, so that the piston rod body 2 can be installed, the piston rod sealing ring 102 is embedded with a second sealing groove 203, so that the piston body 1 is embedded with the piston rod body 2, the piston rod body 2 provides a position for opening a groove at the outer side to enable the piston rod body to be installed, the fixing groove 202 is embedded with the piston fixing block 3, thereby, the piston rod body 2 is fixed, and the piston fixing block 3 can fix the piston rod body 2 by being matched with the gland 301.

Further, a first sealing groove 101 is formed in the outer side of the piston body 1, a piston sealing ring 103 is sleeved on the inner side of the first sealing groove 101, the first sealing groove 101 provides a mounting position for the piston sealing ring 103, the piston sealing ring 103 can be mounted, the piston sealing ring 103 plays a sealing role, and the sealing performance of the piston body 1 is improved.

Further, a retainer groove 201 is formed in the outer side of the piston rod body 2, the retainer groove 201 is located on one side of the fixing groove 202, an axial elastic check ring 205 is sleeved on the inner side of the retainer groove 201, a second sealing groove 203 is formed in the outer side of the piston rod body 2, the inner side of the second sealing groove 203 is embedded with the piston rod sealing ring 102, anti-slip patterns 204 are formed in the outer side of one end of the piston rod body 2, the retainer groove 201 is embedded with the axial elastic check ring 205, the axial elastic check ring 205 can be installed, the axial elastic check ring 205 is used for locking the piston rod body 2, the second sealing groove 203 provides a space for installing the piston body 1, and the anti-slip patterns 204 play a role in anti-slip, so that a worker can detach the piston rod conveniently without slipping.

Further, the gland 301 is installed in the outside of piston fixed block 3, and the gland 301 is located the outside of piston rod body 2, and the gland 301 is used for locking piston fixed block 3, makes piston fixed block 301 fixed, provides the effect for the locking of piston rod body 2.

The working principle is as follows: this piston body structure of convenient dismantlement, piston rod body 2 is fixed through piston fixed block 3 with piston body 1, piston fixed block 3 is fixed through gland 301, gland 301 is fixed through epaxial circlip 205, the piston body structure adopts no screw thread locking structure, through epaxial circlip 205, gland 301, piston fixed block 3 locks piston body 1 and piston rod body 2, can convenient and fast install and dismantle the piston body on the compressor, improve the installation effectiveness of compressor piston body, can guarantee the piston body when bearing great piston power simultaneously, the operation of safety and stability.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a piston body structure of convenient dismantlement which characterized in that: including piston body (1) and piston fixed block (3), piston rod sealing washer (102) are installed to the inner wall of piston body (1), and piston rod body (2) are installed through piston rod sealing washer (102) in piston body (1), fixed slot (202) have been seted up in the outside of piston rod body (2), piston fixed block (3) are installed to the inboard of fixed slot (202).

2. A piston body structure for easy disassembly according to claim 1, wherein: a first sealing groove (101) is formed in the outer side of the piston body (1), and a piston sealing ring (103) is sleeved on the inner side of the first sealing groove (101).

3. A piston body structure for easy disassembly according to claim 1, wherein: the piston rod sealing structure is characterized in that a retaining ring groove (201) is formed in the outer side of the piston rod body (2), the retaining ring groove (201) is located on one side of a fixing groove (202), an axial elastic retaining ring (205) is sleeved on the inner side of the retaining ring groove (201), a second sealing groove (203) is formed in the outer side of the piston rod body (2), the inner side of the second sealing groove (203) is embedded with a piston rod sealing ring (102), and anti-skidding threads (204) are formed in the outer side of one end of the piston rod body (2).

4. A piston body structure for easy disassembly according to claim 1, wherein: the outer side of the piston fixing block (3) is provided with a gland (301), and the gland (301) is positioned on the outer side of the piston rod body (2).