CN220378432U

CN220378432U - Pressure balance type packing ring

Info

Publication number: CN220378432U
Application number: CN202321985690.1U
Authority: CN
Inventors: 李嘉旭; 刘丹妮
Original assignee: Shaanxi Yanchang Oil And Gas Co ltd
Current assignee: Shaanxi Yanchang Oil And Gas Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-01-23
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a pressure balance type packing ring, and relates to the technical field of packing rings; the utility model mainly comprises the following steps: the packing box is a columnar ring, a piston rod on the reciprocating compressor movably penetrates through the inner wall of the packing box and is attached to the inner wall of the packing box, the packing box is composed of two symmetrical semicircular blocks, a positioning groove is clamped on one side of one semicircular block, a positioning block which is in plug-in fit with the positioning groove is fixed on the other semicircular block, semicircular mounting grooves are formed in the inner walls of the two semicircular blocks, and the mounting grooves on the two semicircular blocks form a complete circular groove; the sealing rings are movably clamped in the two mounting grooves, and the inner diameter of the sealing rings is the same as that of the semicircular blocks; the fixed plates are fixedly sleeved at the end parts of the semicircular blocks, and the two fixed plates are fixed on the reciprocating compressor through bolts. The utility model has good sealing effect, is convenient to replace the sealing ring and is convenient to use.

Description

Pressure balance type packing ring

Technical Field

The utility model relates to the technical field of packing rings, in particular to a pressure balance type packing ring.

Background

The packing ring of the reciprocating compressor has the function of preventing the high-pressure gas in the cylinder from leaking along the direction of the piston rod, and is one of the most important parts in the compressor and one of the most important external leakage paths of the compressor. In general, we often refer to a packing seal as a dynamic seal, i.e., a seal that is only applied when the compressor is in operation, but is not applied when the compressor is shut down or in other special situations. Dynamic sealing means that the pressure applied to the packing ring varies significantly over the cycle of the reciprocating motion of the piston, so that the pressure is also known as the pulsating pressure, such as is required for a typical double acting cylinder, where the pulsating pressure is required for the packing ring to seal against the gas.

The packing seal ring is usually made of materials such as filled polytetrafluoroethylene, cast nylon and metal plastic with certain self-lubricating property, gas is compressed in the compressor, the temperature of the gas rises, the sealing element expands, the sealing element is repeatedly rubbed after long-time operation, the sealing effect is gradually weakened, the packing seal ring belongs to a vulnerable part and needs to be replaced frequently, and the packing seal ring in the conventional reciprocating compressor is inconvenient to replace and poor in sealing effect.

Disclosure of Invention

The utility model aims at: in order to solve the problems set forth in the background art, the present utility model provides a pressure balanced packing ring.

The utility model adopts the following technical scheme for realizing the purposes:

a pressure balanced packing ring comprising:

the packing box is a columnar ring, a piston rod on the reciprocating compressor movably penetrates through the inner wall of the packing box and is attached to the inner wall of the packing box, the packing box is composed of two symmetrical semicircular blocks, one side of each semicircular block is provided with a locating groove in a clamping mode, the other semicircular block is fixedly provided with a locating block which is in plug-in fit with the locating groove, the inner wall of each semicircular block is provided with a semicircular installation groove, and the installation grooves on the two semicircular blocks form a complete circular groove;

the sealing rings are movably clamped in the two mounting grooves, and the inner diameter of each sealing ring is the same as that of each semicircular block;

and the fixing plates are fixedly sleeved at the end parts of the semicircular blocks, and the two fixing plates are fixed on the reciprocating compressor through bolts.

Preferably, the sealing ring is composed of two semicircular plates, the size of each semicircular plate is matched with the size of each mounting groove, one semicircular plate is provided with connecting grooves at two ends, connecting blocks are fixed at two ends of each semicircular plate, and the two connecting blocks are respectively inserted into the two connecting grooves.

Preferably, a slot is formed in the outer peripheral side of the semicircular plate, and an inserting block movably inserted into the slot is fixed on the inner wall of the mounting slot.

Preferably, the number of the mounting grooves on the inner wall of the same semicircular block is multiple, the mounting grooves are uniformly distributed, and semicircular plates are mounted in the mounting grooves.

Preferably, one side of the fixing plate is provided with a fixing groove, the other side of the fixing plate is provided with a device groove, a device block is movably inserted in the device groove, one end of the device block is movably inserted in the fixing groove, one side of the fixing plate is provided with a guide groove which is arranged along the length direction of the device groove and is communicated with the device groove, and a control board which is fixed with the device block is slidably arranged in the guide groove.

Preferably, the device block is provided with a threaded groove in a penetrating manner, one side of the fixing plate is provided with a through groove communicated with the fixing groove, a screw is movably inserted into the through groove, and the screw is inserted into the threaded groove.

The beneficial effects are that:

when the sealing device is installed, firstly, the semicircular plate is inserted into the installation groove, then, the two semicircular blocks are combined together, the positioning block is inserted into the positioning groove, the stability of the two semicircular blocks is guaranteed, the piston rod penetrates through the two semicircular blocks, meanwhile, the sealing ring is limited, the sealing effect is improved, finally, the fixing plate and the reciprocating compressor are fixedly installed, the sealing effect is guaranteed, meanwhile, the device is convenient to detach, the sealing ring is convenient to replace, and the sealing device is convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a perspective cross-sectional view of FIG. 1 in accordance with the present utility model;

FIG. 3 is a perspective cross-sectional view of the utility model in a further direction from FIG. 1;

FIG. 4 is a schematic perspective view of the structure of FIG. 1 according to the present utility model;

FIG. 5 is an exploded view of a portion of the structure of FIG. 1 in accordance with the present utility model;

fig. 6 is an exploded view of a portion of the structure of fig. 1 in accordance with the present utility model.

In fig. 1-6:

1. a stuffing box; 2. a seal ring; 3. a fixing plate; 11. a semicircular block; 12. a positioning groove; 13. a positioning block; 14. a mounting groove; 15. inserting blocks; 21. a semicircular plate; 22. a connecting groove; 23. a connecting block; 24. a slot; 31. a fixing groove; 32. a device slot; 33. a device block; 34. a guide groove; 35. a control board; 36. a through groove; 37. a screw; 331. a thread groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

The pressure balance packing ring provided in this embodiment, please refer to fig. 1-6; mainly comprises the following steps: the packing box 1 is a columnar ring, a piston rod on the reciprocating compressor movably penetrates through the inner wall of the packing box 1, the piston rod is attached to the inner wall of the packing box 1, the packing box 1 is composed of two symmetrical semicircular blocks 11, positioning grooves 12 are clamped on one side of one semicircular block 11, the number of the positioning grooves 12 is multiple and are uniformly distributed on one semicircular block 11, a plurality of uniformly distributed positioning blocks 13 are fixed on the other semicircular block 11, the positioning blocks 13 are in one-to-one correspondence with the positioning grooves 12, the positioning blocks 13 are movably inserted into the corresponding positioning grooves 12, semicircular mounting grooves 14 are formed in the inner walls of the two semicircular blocks 11, and the mounting grooves 14 on the two semicircular blocks 11 are paired to form a complete circular groove; the sealing ring 2 is movably clamped in the two mounting grooves 14, the inner diameter of the sealing ring 2 is the same as the inner diameter of the semicircular blocks 11, the sealing ring 2 can be compressed through the involution of the two semicircular blocks 11, the sealing effect is improved, and the fact that the outer side wall of the packing box 1 is tightly attached to the inner wall of the reciprocating compressor when the packing box 1 is mounted and used is required, so that the stability between the two semicircular blocks 11 is ensured, and the sealing effect of the sealing ring 2 is ensured; the fixed plate 3, fixed cover is established at the tip of semicircle piece 11, and two fixed plates 3 pass through the bolt fastening on reciprocating compressor, and the stability of packing box 1 is guaranteed to two fixed plates 3, and the device is convenient for demolish, conveniently changes the sealing ring 2 of damage.

In this embodiment, referring to fig. 3, 4 and 5, the sealing ring 2 is composed of two semicircular plates 21, the size of the semicircular plates 21 is matched with the size of the mounting groove 14, so that the installation is convenient, when in installation, firstly, the semicircular plates 21 are clamped in the mounting groove 14, then, the two semicircular blocks 11 are arranged on the outer periphery side of the piston rod, the two semicircular blocks 11 are combined, the positioning block 13 is inserted into the corresponding positioning groove 12, at the moment, the two semicircular plates 21 are combined, then, the packing box 1 is slid to be combined with the inner wall of the reciprocating compressor, the fixing plate 3 is used for fixing the reciprocating compressor, the stability of the packing box 1 can be ensured, the connecting grooves 22 are formed at two ends of one semicircular plate 21, the connecting blocks 23 are fixed at two ends of the other semicircular plate 21, and the two connecting blocks 23 are respectively inserted into the two connecting grooves 22, so that the stability and the strength of the two semicircular plates 21 combined into the sealing ring 2 can be improved, the deformation can be avoided, and the sealing effect can be improved; the slot 24 is formed in the outer peripheral side of the semicircular plate 21, the insert 15 movably inserted into the slot 24 is fixed on the inner wall of the mounting groove 14, and when the semicircular plate 21 is mounted, the slot 24 on the semicircular plate 21 is in inserted fit with the insert 15 in the mounting groove 14, so that a piston rod can be prevented from driving the semicircular plate 21 to rotate in the mounting groove 14, the stability of the sealing ring 2 is improved, and the sealing effect is improved; the mounting groove 14 quantity on the same semicircle piece 11 inner wall is a plurality of, and the semicircle board 21 is all installed to the inside of a plurality of mounting grooves 14 evenly distributed and a plurality of mounting grooves 14, and in this embodiment, the mounting groove 14 quantity on the same semicircle piece 11 inner wall is three, and the setting of three sealing ring 2, sealed effect is better.

Further, referring to fig. 2 and 6, a fixing slot 31 is formed on one side of one fixing plate 3, a device slot 32 is formed on one side of the other fixing plate 3, a device block 33 is movably inserted in the device slot 32, one end of the device block 33 is movably inserted in the fixing slot 31, a guide slot 34 which is arranged along the length direction of the device slot 32 and is communicated with the device slot 32 is formed on one side of the fixing plate 3, a control plate 35 which is fixed with the device block 33 is slidably mounted in the guide slot 34, and when two semicircular blocks 11 are spliced, in order to further improve the stability of the device, the control plate 35 slides along the guide slot 34 at this time to drive the device block 33 to move, one end of the device block 33 is inserted in the fixing slot 31, and the two fixing plates 3 cannot generate relative movement along the length direction of the semicircular blocks 11, so that the stability is improved; the device piece 33 is provided with a thread groove 331 in a penetrating way, one side of one fixed plate 3 is provided with a through groove 36 communicated with the fixed groove 31, a screw 37 is movably inserted in the through groove 36, the screw 37 is inserted in the thread groove 331 in a threaded way, after one end of the device piece 33 is inserted in the fixed groove 31, the screw 37 is rotated, the screw 37 is inserted in the thread groove 331 in a threaded way, and the two fixed plates 3 can be fixed, so that the stability is further improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Pressure balance type packing ring, its characterized in that includes:

the packing box (1), packing box (1) is columnar ring, piston rod on the reciprocating compressor is movable to run through the inner wall of packing box (1) and the piston rod is laminated with the inner wall of packing box (1), packing box (1) is made up of two symmetrical semicircle ring blocks (11), one side of semicircle ring block (11) is blocked and is equipped with constant head tank (12), another semicircle ring block (11) is fixed with and pegs graft the locating piece (13) of fit with constant head tank (12), all offer semicircle ring mounting groove (14) on the inner wall of two semicircle ring blocks (11), the mounting groove (14) on two semicircle ring blocks (11) are synthesized into a complete ring groove;

the sealing rings (2) are movably clamped in the two mounting grooves (14), and the inner diameter of each sealing ring (2) is the same as that of each semicircular block (11);

the fixed plates (3) are fixedly sleeved at the end parts of the semicircular blocks (11), and the two fixed plates (3) are fixed on the reciprocating compressor through bolts.

2. The pressure balance type packing ring according to claim 1, wherein the sealing ring (2) is composed of two semicircular plates (21), the size of each semicircular plate (21) is matched with the size of each mounting groove (14), connecting grooves (22) are formed in two ends of one semicircular plate (21), connecting blocks (23) are fixed to two ends of the other semicircular plate (21), and the two connecting blocks (23) are respectively inserted into the two connecting grooves (22).

3. The pressure balance type packing ring according to claim 2, wherein a slot (24) is formed on the outer peripheral side of the semicircular plate (21), and an insert block (15) movably inserted into the slot (24) is fixed on the inner wall of the mounting groove (14).

4. The pressure balance type packing ring according to claim 2, wherein the number of the mounting grooves (14) on the inner wall of the same semicircular block (11) is plural, the plurality of the mounting grooves (14) are uniformly distributed, and semicircular plates (21) are mounted in the plurality of the mounting grooves (14).

5. The pressure balance type packing ring according to claim 1, wherein one side of one fixing plate (3) is provided with a fixing groove (31), the other side of the fixing plate (3) is provided with a device groove (32), a device block (33) is movably inserted into the device groove (32), one end of the device block (33) is movably inserted into the fixing groove (31), one side of the fixing plate (3) is provided with a guide groove (34) which is arranged along the length direction of the device groove (32) and is communicated with the device groove (32), and a control plate (35) which is fixed with the device block (33) is slidably arranged in the guide groove (34).

6. The pressure balance type packing ring according to claim 5, wherein a thread groove (331) is formed in the device block (33) in a penetrating manner, a through groove (36) communicated with the fixing groove (31) is formed in one side of one fixing plate (3), a screw (37) is movably inserted into the through groove (36), and the screw (37) is inserted into the thread groove (331) in a threaded manner.