CN223344668U - Improved mechanical sealing device for metal corrugated pipe - Google Patents

Abstract

The utility model discloses an improved mechanical sealing device for a metal corrugated pipe, which relates to the technical field of metal corrugated pipe sealing and comprises a corrugated pipe main body, wherein one end of the corrugated pipe main body is fixedly connected with a mounting and connecting mechanism, the mounting and connecting mechanism comprises a communicating pipe, the communicating pipe is communicated to one end of the corrugated pipe, a sealing pipe is fixedly sleeved on the inner wall of the communicating pipe, the tail end of the sealing pipe is communicated with a sealing rubber ring, and the outer wall of the communicating pipe is in threaded connection with a threaded sleeve. According to the utility model, the shaft end of the equipment penetrates into the communicating pipe, and then the sealing rubber sleeve is sleeved on the outer wall of the equipment by rotating the threaded sleeve, so that the installation connecting mechanism and the equipment are fixed and sealed together, the installation process can be faster and more convenient, the installation efficiency is improved, the disassembly can be faster and more convenient in the disassembly process, and the maintenance is more convenient.

Description

Improved mechanical sealing device for metal corrugated pipe

Technical Field

The utility model relates to the technical field of metal bellows sealing, in particular to an improved metal bellows mechanical sealing device.

Background

At present, in the fields of oil extraction, storage and transportation, gathering and transportation and the like of an oil field, a packing seal is generally adopted on shaft end seals of various rotary devices, and due to the defects of short sealing service life, frequent replacement, large shaft serial quantity, large labor intensity of operators and the like, conventional mechanical seals are successively changed, and the conventional mechanical seals have the defects of increased leakage quantity, part abrasion, short service life and the like due to the influence of factors such as large amount of medium impurities, easy scaling, serious corrosion, high conveying pressure and the like in the middle and later period of oil field exploitation, and particularly have the defects of high importance on the safety of production sites, surrounding environments and operators at present, the requirement of working operation is required to be safe and reliable, and the conventional sealing devices cannot meet the requirements of normal production working conditions.

The metal corrugated pipe mechanical sealing device disclosed in the prior patent (bulletin number: CN 212004257U) comprises a shaft sleeve, wherein a movable ring tail seat is fixed outside the shaft sleeve through a screw C, a metal corrugated pipe is welded at the right end of the movable ring tail seat, a movable ring seat (6) is welded at the right end of the metal corrugated pipe, a movable ring is inlaid at the right end of the movable ring seat, the right end of the movable ring is in plane contact with a stationary ring, the stationary ring is arranged inside a gland, and the metal corrugated pipe mechanical sealing device has high elasticity, strength and rigidity, has good floatability and random compensation, can compensate leakage caused by abrasion, axial movement, vibration and other reasons of a sealing ring, and has long service life.

However, the above technical solution still has a certain defect, and the above technical solution still needs to be installed through bolts in the process of installation, which makes it necessary to repeatedly rotate the bolts in the process of installation, so that a lot of time is required to be consumed in the process of installation, resulting in too low installation efficiency, and for this reason, an improved mechanical sealing device for metal bellows is proposed.

Disclosure of utility model

Based on this, it is an object of the present utility model to provide an improved mechanical sealing device for metal bellows to solve the technical problems set forth in the background above.

In order to achieve the aim, the utility model provides the following technical scheme that the improved metal corrugated pipe mechanical sealing device comprises a corrugated pipe main body, wherein one end of the corrugated pipe main body is fixedly connected with an installation connecting mechanism;

The installation coupling mechanism includes communicating pipe, communicating pipe communicates the one end to the bellows, the fixed cover of inner wall of communicating pipe is equipped with the sealed pipe, the terminal intercommunication of sealed pipe has sealed rubber ring, the outer wall threaded connection of communicating pipe is at the thread bush, the inner wall fixedly connected with of thread bush extends to the inside extrusion pipe of communicating pipe, the extrusion pipe extends to between sealed pipe and the communicating pipe.

As the preferable technical scheme of the improved mechanical sealing device for the metal corrugated pipe, the inner wall of the sealing rubber ring is provided with a plurality of groups of bulges.

As an optimized technical scheme of the improved mechanical sealing device for the metal corrugated pipe, the other end of the corrugated pipe is communicated with a fixed sealing mechanism, the fixed sealing mechanism comprises two groups of fixed sleeves, and a group of first semi-rings are respectively arranged on the outer wall of each group of fixed sleeves in a sliding manner.

As an optimized technical scheme of the improved mechanical sealing device for the metal corrugated pipe, a group of semi-annular sealing strips are respectively sleeved on the inner wall of each group of fixing sleeve, and grooves and protrusions are arranged at the contact positions of the two groups of semi-annular sealing strips.

As an optimized technical scheme of the improved metal corrugated pipe mechanical sealing device, the inner wall of each group of fixing sleeves is respectively sleeved with a group of second semi-rings, and the two groups of second semi-rings are in threaded connection with the inner walls of the two groups of fixing sleeves.

As an improved metal corrugated pipe mechanical sealing device, the first half ring comprises a half ring main body, the half ring main body is sleeved on the outer wall of the fixed sleeve, one end of the half ring main body is fixedly connected with a bump, and the other end of the half ring main body is provided with a groove.

As an optimized technical scheme of the improved metal corrugated pipe mechanical sealing device, the inner wall of the first semi-ring is provided with threads which are matched with the outer wall of the fixed sleeve.

In summary, the utility model has the following advantages:

1. According to the utility model, the shaft end of the equipment penetrates into the communicating pipe, and then the sealing rubber sleeve is sleeved on the outer wall of the equipment by rotating the threaded sleeve, so that the installation connecting mechanism and the equipment are fixed and sealed together, the installation process can be faster and more convenient, the installation efficiency is improved, the disassembly can be faster and more convenient in the disassembly process, and the maintenance is more convenient;

2. According to the utility model, the two groups of fixing sleeves are attached together, and then the fixing sleeves are locked through the first semi-ring, so that the semi-annular sealing strip is attached to a workpiece to play a sealing role, and the corrugated pipe main body is fixed with the fixing sleeves through the second semi-ring, so that the corrugated pipe main body is more convenient and rapid to replace when the semi-annular sealing strip is required, and the maintenance efficiency is improved.

Drawings

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

FIG. 2 is a schematic diagram of a front view of a stationary seal mechanism according to the present utility model;

FIG. 3 is a schematic view of an explosion structure of the fixing and sealing mechanism of the present utility model;

FIG. 4 is a schematic cross-sectional view of the mounting and connecting mechanism of the present utility model;

Fig. 5 is a schematic front view of the first half ring of the present utility model.

In the figure, 1, a corrugated pipe main body, 2, an installation connecting mechanism, and 3, a fixed sealing mechanism;

201. Communicating pipe 202, sealing pipe 203, sealing rubber ring 204, screw sleeve 205, pushing pipe;

301. The fixing sleeve comprises a fixing sleeve body 302, a first half ring, a 3021, a half ring main body 3022, a convex block 3023, a groove 303, a half ring sealing strip 304 and a second half ring.

Detailed Description

The technical solutions in 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 embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.

The improved metal corrugated pipe mechanical sealing device comprises a corrugated pipe main body 1, as shown in fig. 1 to 5, wherein one end of the corrugated pipe main body 1 is fixedly connected with an installation connecting mechanism 2;

The installation coupling mechanism 2 includes communicating pipe 201, and communicating pipe 201 communicates to the one end of bellows, and the inner wall fixed cover 301 of communicating pipe 201 is equipped with sealed pipe 202, and sealed pipe 202's end intercommunication has sealed rubber ring 203, and communicating pipe 201's outer wall threaded connection is at thread bush 204, and thread bush 204's inner wall fixedly connected with extends to communicating pipe 201 inside and pushes away the pipe 205, pushes away between pipe 205 and extends sealed pipe 202 and communicating pipe 201, and sealed rubber ring 203's inner wall is provided with the multiunit arch.

Through penetrating equipment axle head inside communicating pipe 201, then through rotating thread bush 204 for thread bush 204 promotes to push pipe 205 and stretches into to communicating pipe 201 inside, thereby makes to push pipe 205 carry out the extrusion to sealing rubber ring 203, thereby makes sealing rubber ring 203 draw close to the centre, thereby makes sealing rubber ring 203 and equipment laminating, makes keeping sealing connection between bellows main part 1 and the equipment, has avoided frequently tightening the bolt many times at the in-process of installation.

Referring to fig. 2, 3 and 5, the other end of the bellows is communicated with a fixed sealing mechanism 3, the fixed sealing mechanism 3 includes two groups of fixed sleeves 301, the outer wall of each group of fixed sleeves 301 is respectively provided with a group of first semi-rings 302 in a sliding manner, the inner wall of each group of fixed sleeves 301 is respectively sleeved with a group of semi-ring sealing strips 303, the contact position of the two groups of semi-ring sealing strips 303 is provided with a groove 3023 and a protrusion, the inner wall of each group of fixed sleeves 301 is respectively sleeved with a group of second semi-rings 304, the two groups of second semi-rings 304 are in threaded connection with the inner wall of the two groups of fixed sleeves 301, the first semi-rings 302 include semi-ring main bodies 3021, the semi-ring main bodies 3021 are sleeved on the outer wall of the fixed sleeves 301, one end of the semi-ring main bodies 3021 is fixedly connected with a bump 3022, the other end of the semi-ring main bodies 3021 is provided with a groove 3023, and the inner wall of the first semi-rings 302 is provided with threads which are anastomotic with the outer wall of the fixed sleeves 301.

Through placing two sets of fixed cover 301 on the outer wall of axle head for two sets of fixed cover 301 laminating together, make two sets of semicircle sealing strip cover establish the outer wall at the axle head, then place two sets of semi-ring main part 3021 at the outer wall of fixed cover 301, promote the lug 3022 and the recess 3023 on two sets of semi-ring main part 3021 mutual interactive connection together, thereby make two sets of semi-ring main part 3021 cover establish the outer wall at fixed cover 301, then pass through the screw thread, make two sets of semi-ring main part 3021 threaded connection at the outer wall of two sets of fixed cover 301, thereby make two sets of fixed cover 301 unable separation, then the tip butt of bellows is at the tip of two sets of fixed cover 301, then establish two sets of second semi-ring 304 cover at the outer wall of bellows main part 1, screw the tip of two sets of fixed cover 301 again, thereby make two sets of second semi-ring 304 link together with bellows.

During the use, penetrate inside communicating pipe 201 through the axle head with equipment, then make sealed rubber ring 203 cover establish the outer wall at equipment through rotating thread bush 204 to make fixed and sealed together between installation coupling mechanism 2 and the equipment, thereby make can be more quick convenient at the in-process of installation, make installation effectiveness obtain improving, and can dismantle more fast at the in-process of dismantling, make maintenance more convenient, the device does not involve the part and all is the same with prior art or can adopt prior art to realize.

Although embodiments of the utility model have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the utility model as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the utility model, provided that such modifications are within the scope of the appended claims.

Claims (7)

1. The improved metal corrugated pipe mechanical sealing device comprises a corrugated pipe main body (1) and is characterized in that one end of the corrugated pipe main body (1) is fixedly connected with an installation connecting mechanism (2);

The installation coupling mechanism (2) comprises a communicating pipe (201), the communicating pipe (201) is communicated to one end of a corrugated pipe, a sealing pipe (202) is arranged on an inner wall fixing sleeve (301) of the communicating pipe (201), a sealing rubber ring (203) is communicated with the tail end of the sealing pipe (202), the outer wall of the communicating pipe (201) is in threaded connection with a threaded sleeve (204), a pushing pipe (205) extending to the inside of the communicating pipe (201) is fixedly connected with the inner wall of the threaded sleeve (204), and the pushing pipe (205) extends to a position between the sealing pipe (202) and the communicating pipe (201).

2. The improved mechanical seal for metal bellows of claim 1, wherein the inner wall of the packing element (203) is provided with a plurality of sets of protrusions.

3. The improved mechanical seal device for metal bellows according to claim 1, wherein the other end of the bellows is communicated with a fixed seal mechanism (3), the fixed seal mechanism (3) comprises two groups of fixed sleeves (301), and the outer wall of each group of fixed sleeves (301) is respectively provided with a group of first semi-rings (302) in a sliding manner.

4. The improved mechanical seal device for metal bellows according to claim 3, wherein a group of semi-annular sealing strips (303) are respectively sleeved on the inner wall of each group of the fixing sleeve (301), and a groove (3023) and a protrusion are arranged at the contact position of the two groups of semi-annular sealing strips (303).

5. The improved mechanical seal device for metal bellows according to claim 3, wherein the inner wall of each set of the fixing sleeve (301) is respectively sleeved with a set of second semi-rings (304), and the two sets of second semi-rings (304) are in threaded connection with the inner walls of the two sets of fixing sleeves (301).

6. The improved mechanical seal device for metal bellows of claim 3, wherein the first half ring (302) comprises a half ring main body (3021), the half ring main body (3021) is sleeved on the outer wall of the fixing sleeve (301), one end of the half ring main body (3021) is fixedly connected with a bump (3022), and the other end of the half ring main body (3021) is provided with a groove (3023).

7. The improved mechanical seal for metal bellows of claim 3, wherein the inner wall of the first half ring (302) is threaded to engage the outer wall of the stationary sleeve (301).