CN216590383U

CN216590383U - Oil pipe sealing device for steam turbine

Info

Publication number: CN216590383U
Application number: CN202123225796.5U
Authority: CN
Inventors: 赵义旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-24
Anticipated expiration: 2031-12-21

Abstract

The utility model belongs to the technical field of oil pipe sealing, in particular to an oil pipe sealing device for a turbine, which comprises an oil pipe, a connecting assembly for connecting the two oil pipes and a pressing assembly for connecting the oil pipe and the connecting assembly, wherein the oil pipe sealing device for the turbine is matched with an arc-shaped surface through an arc-shaped part, the cross section of the oil pipe sealing device is in a conical arrangement, so that the area of a sealing area is increased, meanwhile, the sealing safety is increased through the arrangement of a sealing ring and an embedding groove, the oil pipe sealing device can be assembled and disassembled for use for unlimited times, the problems of poor high temperature and high pressure performance and poor operability of an oil pipe joint are thoroughly solved, the connecting assembly and the pipeline can be hermetically connected through screwing a pressing nut, the device can be conveniently assembled and disassembled through threaded connection, the sealing effect of the oil pipe can be further improved through the matching of a sealing gasket and a pressing sleeve, and the liquid in the oil pipe is prevented from leaking from one side of the pressing nut, realize quick shutoff, and then improve the device's life.

Description

Oil pipe sealing device for steam turbine

Technical Field

The utility model belongs to the technical field of oil pipe sealing, and particularly relates to an oil pipe sealing device for a steam turbine.

Background

A steam turbine is also called as a steam turbine engine and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and works outwards, the steam turbine is main equipment of a modern thermal power plant and is also used in metallurgical industry, chemical industry and ship power devices, an oil signal input by a speed regulator is converted into the stroke of an oil cylinder piston, and the opening of an oil valve is controlled and adjusted through a lever system, so that the steam flow entering the steam turbine is adaptive to the required flow or power, the reliability and the importance of a connecting joint of an oil pipe are ensured, the reliability and the importance of the connecting joint of the oil pipe are the guarantee of safe operation of equipment and the guarantee of stable process, and the existing oil pipe sealing device for the steam turbine must be added with a flexible sealing gasket, so that the pressure resistance, temperature resistance and sealing safety of the joint are reduced; the fastening pressure is too large, so that the strength requirement of the joint is improved, and the cost is further increased; the operation is inconvenient, and the improved traditional double-spherical-surface seal has the defects of high machining precision requirement, easiness in damage of the spherical surface and poor repeatability due to the fact that a sealing area is an annular line.

Therefore, the oil pipe sealing device for the steam turbine is designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

To solve the problems raised in the background art described above. The utility model provides an oil pipe sealing device for a steam turbine, which can improve the high pressure resistance of an oil pipe, is convenient to assemble and disassemble and has a good sealing effect.

In order to achieve the purpose, the utility model provides the following technical scheme: an oil pipe sealing device for a steam turbine comprises an oil pipe and a connecting assembly for connecting the two oil pipes;

coupling assembling includes the adapter sleeve, the arc department, the inlay groove, the sealing washer, fixed cover, arcwall face and butt groove, oil pipe's one end fixed connection is equipped with the one end of fixed cover, the arcwall face has been seted up to the other end of fixed cover, the one end of arcwall face just is located fixed cover and has seted up the butt groove, butt inslot joint sealing washer, one side of fixed cover is equipped with the adapter sleeve, the arc department has been seted up to the equal symmetry in both ends of adapter sleeve, arc department butt arcwall face, the one end of arc department just is located the terminal surface of adapter sleeve and has seted up the inlay groove, the embedded sealing washer that is equipped with of inlay groove.

The oil pipe sealing device for the steam turbine is preferable, and further comprises a compressing assembly used for connecting the oil pipe and the connecting assembly, wherein the compressing assembly comprises a compressing nut, a locking ring, an inner arc surface, a clamping sleeve and an outer arc surface, the outer circle of one end of the connecting sleeve is sleeved with the locking ring, the inner arc surface is arranged in the locking ring, the clamping sleeve is sleeved on one side of the locking ring and positioned on the connecting sleeve, the outer arc surface is arranged on the clamping sleeve and attached to the inner arc surface, the compressing nut is sleeved on one side of the clamping sleeve and positioned on the connecting sleeve, and the compressing nut is in threaded connection with one side of the fixing sleeve.

Preferably, the oil pipe sealing device for a steam turbine further comprises a fixing nut, the fixing nut is arranged on the outer side of the connecting sleeve, and the connecting sleeve and the fixing nut are integrally formed.

Preferably, the oil pipe sealing device for the steam turbine is provided with an arc-shaped part matched with the arc-shaped surface, and the section of the oil pipe sealing device is in a conical arrangement.

Preferably, the pressing component further comprises a sealing pad and a propping sleeve, the side of the pressing nut far away from the connecting sleeve is provided with the sealing pad in a fitting manner, the side of the sealing pad far away from the pressing nut is provided with the propping sleeve, and the propping sleeve is in threaded connection with one end of the fixing sleeve.

Preferably, the wide opening of the clamping sleeve abuts against the inner bottom end of the compression nut, and the narrow opening of the locking ring abuts against the outer circle of one end of the connecting sleeve.

Preferably, one end of the compression nut is rotatably connected with the outer circle of the connecting sleeve.

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

1. this kind of oil pipe sealing device for steam turbine, through arc department and arcwall face looks adaptation, and its cross-section makes the seal area increase for the toper setting, simultaneously through the setting of sealing washer with the inlay groove, makes sealed security increase, can unlimited number of times dismouting use, thoroughly solved oil pipe joint's the poor problem of high temperature high pressure nature, operability.

2. Through compressing tightly the subassembly, can make and carry out sealing connection between coupling assembling and the pipeline through screwing up gland nut, and through the dismouting of the device of being convenient for of threaded connection, through sealed the pad with support the cooperation of cover tightly, can further improve oil pipe's sealed effect, prevent that the liquid in the oil pipe from one side seepage of gland nut, realize quick shutoff, and then improve the device's life.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a connecting assembly according to the present invention;

FIG. 3 is a schematic structural view of the locking assembly of the present invention;

FIG. 4 is a partial schematic view of the construction of the locking assembly of the present invention;

in the figure:

1. an oil pipe;

2. a connecting assembly; 21. connecting sleeves; 211. an arc-shaped part; 212. embedding a groove; 213. fixing a nut; 22. a seal ring; 23. fixing a sleeve; 231. an arc-shaped surface; 232. a butt joint groove;

3. a compression assembly; 31. a compression nut; 32. locking a ring; 321. an intrados surface; 33. a card sleeve; 331. an outer arc surface; 34. a gasket; 35. and (6) abutting against the sleeve.

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.

As shown in fig. 1:

an oil pipe sealing device for a steam turbine comprises an oil pipe 1.

In this embodiment: the existing oil pipe sealing device for the steam turbine must be added with a flexible sealing gasket, so that the pressure resistance, temperature resistance and sealing safety performance of a joint are reduced.

It should be noted that: when the butt joint is carried out, the sealing performance of the joint is noticed, and the phenomenon of leakage at the joint is prevented.

As shown in fig. 1 and 2:

with the above, the oil pipe connecting device further comprises a connecting assembly 2 for connecting two oil pipes 1;

coupling assembling 2 includes adapter sleeve 21, arc department 211, inlay the wall 212, sealing washer 22, fixed cover 23, arcwall face 231 and butt groove 232, oil pipe 1's one end fixed connection is equipped with the one end of fixed cover 23, arcwall face 231 has been seted up to the other end of fixed cover 23, arcwall face 231's one end just is located fixed cover 23 and has seted up butt groove 232, butt groove 232 interior joint sealing washer 22, one side of fixed cover 23 is equipped with adapter sleeve 21, arc department 211 has been seted up to the equal symmetry in both ends of adapter sleeve 21, arc department 211 butt arcwall face 231, the one end of arc department 211 just is located the terminal surface of adapter sleeve 21 and has seted up inlay the wall 212, inlay the embedded sealing washer 22 that is equipped with of wall 212.

In this embodiment: when connecting two oil pipe 1, with the one end fixed connection to oil pipe 1's of fixed cover 23 one end, one side of fixed cover 23 is equipped with adapter sleeve 21, and inlay groove 212 has been seted up to the terminal surface of adapter sleeve 21, to inlaying the embedded sealing washer 22 of dress groove 212, arcwall face 231 has been seted up to the other end of fixed cover 23, and arc department 211 has all been seted up to the both ends symmetry of adapter sleeve 21 to with double-phase to position department arcwall face 231 and arc department 211 butt connection.

It should be understood that: the connecting assembly 2 further comprises a fixing nut 213, the fixing nut 213 is arranged on the outer side of the connecting sleeve 21, the connecting sleeve 21 and the fixing nut 213 are integrally formed, and when the connecting assembly is connected, the device can be conveniently screwed and sealed through the matching of the fixing nut 213 by using tools.

It should be noted that: the arc 211 is matched with the arc surface 231, and the section of the arc is conical, so that the area of a sealing area is increased, and the sealing effect of the device is further improved.

As shown in fig. 1, fig. 3 and fig. 4:

in combination with the above, still include the compressing assembly 3 that is used for connecting oil pipe 1 and coupling assembling 2, compressing assembly 3 includes gland nut 31, locking ring 32, intrados 321, cutting ferrule 33, extrados 331, the outer pot head of one end of adapter sleeve 21 is equipped with locking ring 32, be equipped with intrados 321 in the locking ring 32, the cover is equipped with cutting ferrule 33 on one side of locking ring 32 and being located adapter sleeve 21, be equipped with extrados 331 on the cutting ferrule 33, and extrados 331 laminates intrados 321, one side of cutting ferrule 33, and be located adapter sleeve 21 and be equipped with gland nut 31, and gland nut 31 threaded connection fixes one side of cover 23.

In this embodiment: when the clamping is performed, the clamping nut 31 is sleeved on the connecting sleeve 21, then the clamping sleeve 33 is sleeved in (when the clamping sleeve is sleeved, the wide opening of the clamping sleeve 33 is enabled to abut against the inner bottom end of the clamping nut 31), then the locking ring 32 is sleeved in, an inner arc surface 321 is arranged in the locking ring 32, an outer arc surface 331 is arranged on the clamping sleeve 33, (when the clamping sleeve is sleeved, the outer arc surface 331 is enabled to be attached to the inner arc surface 321), the clamping nut 31 is screwed on one side of the fixing sleeve 23 by rotating, and (the narrow opening of the locking ring 32 abuts against the outer circle of one end of the connecting sleeve 21) the narrow opening of the locking ring 32 can be clamped on the outer circle of one end of the connecting sleeve 21 under the action of force.

It should be understood that: the laminating of one side that adapter sleeve 21 was kept away from to gland nut 31 is equipped with sealed 34, and sealed one side that gland nut 31 was kept away from to fill up 34 is equipped with and supports tight cover 35, and supports the one end of the fixed cover 23 of tight cover 35 threaded connection, can further improve oil pipe 1's sealed effect, prevents that the liquid in the oil pipe 1 from the one side seepage of gland nut 31, realizes quick shutoff, and then improves the device's life.

It should be noted that: one end of the compression nut 31 is rotatably connected to the outer circumference of the connecting sleeve 21, so that the compression nut 31 is connected to one end of the fixing sleeve 23 by rotating the compression nut 31.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an oil pipe sealing device for steam turbine, includes oil pipe (1), its characterized in that: the connecting assembly (2) is used for connecting the two oil pipes (1);

the connecting component (2) comprises a connecting sleeve (21), an arc-shaped part (211), an embedding groove (212), a sealing ring (22), a fixing sleeve (23), an arc-shaped surface (231) and an abutting groove (232), one end of the oil pipe (1) is fixedly connected with one end provided with a fixed sleeve (23), the other end of the fixed sleeve (23) is provided with an arc-shaped surface (231), one end of the arc-shaped surface (231) is positioned in the fixed sleeve (23) and is provided with a butting groove (232), the sealing ring (22) is clamped in the abutting groove (232), one side of the fixed sleeve (23) is provided with a connecting sleeve (21), the two ends of the connecting sleeve (21) are symmetrically provided with arc-shaped parts (211), the arc-shaped parts (211) are abutted against the arc-shaped surface (231), one end of the arc-shaped part (211) is positioned on the end face of the connecting sleeve (21) and is provided with an embedded groove (212), and a sealing ring (22) is embedded in the embedded groove (212).

2. The oil pipe sealing device for the steam turbine according to claim 1, wherein: still including compressing tightly subassembly (3) that is used for connecting oil pipe (1) and coupling assembling (2), compress tightly subassembly (3) including gland nut (31), locking ring (32), intrados (321), cutting ferrule (33), extrados (331), the one end excircle cover of connecting sleeve (21) is equipped with locking ring (32), be equipped with intrados (321) in locking ring (32), one side of locking ring (32) just is located connecting sleeve (21) and is equipped with cutting ferrule (33), be equipped with extrados (331) on cutting ferrule (33), just extrados (321) are laminated to extrados (331), one side of cutting ferrule (33), and be located connecting sleeve (21) and overlap and be equipped with gland nut (31), just one side of gland nut (31) threaded connection fixed cover (23).

3. The oil pipe sealing device for the steam turbine according to claim 1, wherein: coupling assembling (2) still include fixation nut (213), the outside of adapter sleeve (21) is equipped with fixation nut (213), just adapter sleeve (21) and fixation nut (213) set up for integrated into one piece.

4. The oil pipe sealing device for the steam turbine according to claim 1, wherein: the arc-shaped part (211) is matched with the arc-shaped surface (231), and the section of the arc-shaped part is in conical arrangement.

5. The oil pipe sealing device for the steam turbine according to claim 2, wherein: compress tightly subassembly (3) still including sealed pad (34) and support tight cover (35), the laminating of one side that adapter sleeve (21) was kept away from in gland nut (31) is equipped with sealed pad (34), sealed pad (34) one side of keeping away from gland nut (31) is equipped with and supports tight cover (35), and supports the one end of tight cover (35) threaded connection fixed cover (23).

6. The oil pipe sealing device for the steam turbine according to claim 2, wherein: the wide mouth of cutting ferrule (33) butt gland nut (31) inside bottom, the narrow mouth department butt of locking ring (32) the one end excircle of adapter sleeve (21).

7. The oil pipe sealing device for the steam turbine according to claim 2, wherein: one end of the compression nut (31) is rotatably connected with the excircle of the connecting sleeve (21).