CN216692190U

CN216692190U - Hydraulic control butterfly valve sealing device

Info

Publication number: CN216692190U
Application number: CN202220063591.7U
Authority: CN
Inventors: 张晖; 王传金; 方青; 李国盛; 王宗宇
Original assignee: Huaneng Fujian Energy Development Co Ltd Fuzhou Branch
Current assignee: Huaneng Fujian Energy Development Co Ltd Fuzhou Branch
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-06-07
Anticipated expiration: 2032-01-11

Abstract

The utility model discloses a liquid control butterfly valve sealing device in the technical field of liquid control butterfly valve sealing, which comprises a sealing end cover and a shaft sleeve which are both of annular structures, wherein the shaft sleeve is arranged at the inner side of the sealing end cover in a clearance manner, a plurality of glue injection holes are formed in the circumferential side wall of the sealing end cover in a radially through manner, glue injection joints are arranged in the glue injection holes, glue inlet holes are formed in the circumferential side wall of the shaft sleeve in a through manner corresponding to the glue injection holes, and an O-shaped sealing ring is embedded and arranged on the inner cavity wall of the shaft sleeve; greatly reduced the maintenance cost, guaranteed power plant's circulating water system's stable high-efficient operation, can promote to each liquid accuse butterfly valve sealing device.

Description

Hydraulic control butterfly valve sealing device

Technical Field

The utility model relates to the technical field of hydraulic control butterfly valve sealing, in particular to a hydraulic control butterfly valve sealing device.

Background

The hydraulic control butterfly valve is widely applied to circulating cooling water pipelines of thermal power and nuclear power.

At present, a horizontal turning plate type hydraulic control butterfly valve which is opened by a hydraulic oil station and a piston rod is adopted for an outlet valve of a circulating water pump, and the outlet valve is closed by a swinging arm heavy hammer after pressure relief. The valve shaft of the hydraulic control butterfly valve and the circulating water end cover are sealed by the YX-shaped sealing ring, the YX-shaped sealing ring is easy to harden and wear after long-term operation, and the shaft neck sealing surface is worn, so that the circulating water is leaked.

Based on the above, the utility model designs a hydraulic control butterfly valve sealing device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid accuse butterfly valve sealing device to solve above-mentioned technical problem.

In order to realize the purpose, the utility model provides the following technical scheme: the utility model provides a liquid accuse butterfly valve sealing device, is including the end cover and the axle sleeve that are the loop configuration, the axle sleeve clearance install in the end cover is inboard, radially link up on the circumference lateral wall of end cover and offered a plurality of injecting glue holes, install the injecting glue joint in the injecting glue hole, correspond on the circumference lateral wall of axle sleeve injecting glue hole position link up and has seted up into gluey hole, inlay on the inner chamber wall of axle sleeve and establish and install O type sealing washer.

Preferably, the number of the glue injection joints is four, and the glue injection joints are circumferentially and uniformly distributed.

Preferably, the glue injection joint is detachably connected with the glue injection hole through threads.

Preferably, the axial outer side of the inner hole wall of the sealing end cover is provided with a limiting convex edge, and the axial outer side of the circumferential outer wall of the shaft sleeve is provided with a limiting groove.

Preferably, the number of the O-shaped sealing rings is two, and the O-shaped sealing rings are distributed at intervals in the axial direction.

Preferably, the glue inlet hole is obliquely arranged so that two ends of the glue inlet hole are axially staggered, and the O-shaped sealing ring is positioned on the axial outer side of the glue outlet of the glue inlet hole.

Preferably, a plurality of step mounting holes are distributed in a circular array at the edge of the end face of the sealing end cover.

Preferably, the material of the shaft sleeve is HC6 brass.

Compared with the prior art, utility model's beneficial effect does:

according to the utility model, the shaft sleeve and the shaft are sealed by glue injection and O-shaped rings; the sealing performance of the sealing end cover and the valve shaft is greatly improved; the novel structure is not easy to wear, and even if the shaft sleeve is worn, high tightness can be achieved only by injecting glue into the glue injection hole to fill a gap generated by wear; greatly reduced the maintenance cost, guaranteed power plant's circulating water system's stable high-efficient operation, can promote to each liquid accuse butterfly valve sealing device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

FIG. 1 is a schematic side cross-sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a sealing end cover, 11-a limiting convex edge, 2-a shaft sleeve, 21-a limiting groove, 3-a glue injection hole, 4-a glue injection joint, 5-a glue inlet hole, 6-an O-shaped sealing ring and 7-a step mounting hole.

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. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-2, the utility model provides a technical solution: the utility model provides a liquid accuse butterfly valve sealing device, including end cover 1 and the axle sleeve 2 that is the loop configuration, 2 clearance installations in 1 inboard of end cover are put to axle sleeve 2, the interior pore wall axial outside of end cover 1 is provided with spacing protruding edge 11, the circumference outer wall axial outside of axle sleeve 2 is provided with spacing recess 21, utilize spacing protruding edge 11 and spacing recess 21 pressfitting, make end cover 1 can play the axial fixity effect to axle sleeve 2, and end face edge ring row of end cover 1 distributes and has seted up a plurality of step mounting holes 7, install end cover 1 and liquid accuse butterfly valve main part connection through 7 cooperation screws of step mounting hole.

The material of axle sleeve 2 is HC6 brass, because the material of valve shaft is 2Cr13 stainless steel so in order to prevent the wearing and tearing of the journal when the butterfly valve switch, so axle sleeve 2 adopts HC6 brass, just can wear the axle sleeve like this and not harm the valve shaft, even the axle sleeve takes place to wear, as long as through annotate the glue hole inwards to fill the gap that produces because of wearing and tearing and alright reach high leakproofness.

The sealing end cover 1 is characterized in that a plurality of glue injection holes 3 are radially arranged on the circumferential side wall in a penetrating mode, the outer end portion of each glue injection hole 3 is a threaded hole with the depth of 15 specifications M10, the inner end portion of each glue injection hole 3 is a through hole with the specification phi 4, a glue injection joint 4 is installed in each glue injection hole 3, an external thread with the specification M10 is arranged on the outer wall of each glue injection joint 4, each glue injection joint 4 is detachably connected with the corresponding glue injection hole 3 through threads, when the sealing end cover is used, a glue injection device is communicated with one glue injection joint 4, the other glue injection joint 4 is opened to serve as an exhaust passage, a sealing cavity capable of allowing air to flow is formed in the inner gap, MF-3 type sealant is continuously injected into the glue injection joints 4 serving as the exhaust passages, then the glue injection joints 4 are closed, and the sealing performance of the shaft and the shaft sleeve can be guaranteed by ensuring that the whole sealing cavity is filled with the sealant. The quantity of injecting glue joint 4 is four, is the circumference equipartition setting, and the homoenergetic is carried out the injecting glue at the multi-angle under any state to the valve no matter.

Correspond 3 positions in the injecting glue hole on the circumference lateral wall of axle sleeve 2 and link up and seted up into gluey hole 5, sealed glue injected by injecting glue joint 4 further gets into the clearance space of axle sleeve 2 and axle through advancing gluey hole 5, seal between axle sleeve 2 and the axle, inlay on the inner chamber wall of axle sleeve 2 and establish and install O type sealing washer 6, it makes its both ends form the axial dislocation through being the slope form setting to advance gluey hole 5, play the position and dodge the effect, make O type sealing washer 6 be located the axial outside of advancing gluey hole 5 play jiao kou, and then make the sealed glue of pouring into be located the inner chamber side of valve main part.

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 explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a liquid accuse butterfly valve sealing device which characterized in that: including end cover (1) and axle sleeve (2) that are the annular structure, axle sleeve (2) clearance install in end cover (1) are inboard, radially link up on the circumference lateral wall of end cover (1) and seted up a plurality of injecting glue holes (3), install injecting glue joint (4) in injecting glue hole (3), correspond on the circumference lateral wall of axle sleeve (2) injecting glue hole (3) position link up and has seted up into gluey hole (5), inlay on the inner chamber wall of axle sleeve (2) and establish and install O type sealing washer (6).

2. The liquid control butterfly valve sealing device of claim 1, wherein: the number of the glue injection joints (4) is four, and the glue injection joints are circumferentially and uniformly distributed.

3. The liquid control butterfly valve sealing device of claim 1, wherein: the glue injection joint (4) is detachably connected with the glue injection hole (3) through threads.

4. The hydraulically controlled butterfly valve sealing device of claim 1, wherein: the sealing end cover is characterized in that a limiting convex edge (11) is arranged on the axial outer side of the inner hole wall of the sealing end cover (1), and a limiting groove (21) is arranged on the axial outer side of the circumferential outer wall of the shaft sleeve (2).

5. The liquid control butterfly valve sealing device of claim 1, wherein: the number of the O-shaped sealing rings (6) is two, and the O-shaped sealing rings are distributed at intervals in the axial direction.

6. The liquid control butterfly valve sealing device of claim 1, wherein: advance gluey hole (5) and make its both ends form axial dislocation through being the slope form setting, O type sealing washer (6) are located advance gluey hole (5) and go out the axial outside of gluing the mouth.

7. The liquid control butterfly valve sealing device of claim 1, wherein: the end face edge of the sealing end cover (1) is provided with a plurality of step mounting holes (7) in a circular array.

8. The liquid control butterfly valve sealing device of claim 1, wherein: the material of the shaft sleeve (2) is HC6 brass.