CN221075707U - Underwater temporary pipeline plug - Google Patents

Abstract

The utility model discloses an underwater temporary pipeline plug which comprises a flange cover, a conical sealing piece, a clamping assembly and a locking assembly, wherein the large end face of the conical sealing piece is attached to the flange cover, the small end face faces towards a pipeline opening, the clamping assembly comprises a ring plate, a clamping bolt and a clamping nut, the ring plate is sleeved outside a pipeline, the clamping nut is fixed on the end face of the ring plate, the clamping bolt is screwed into the clamping nut to radially clamp the pipeline, the locking assembly comprises a locking screw rod and a locking nut, the locking screw rod penetrates the flange cover, the end part of the locking screw rod is fixed on the ring plate, the locking nut is screwed into the locking screw rod to fasten the flange cover, and the conical sealing piece can move forwards and backwards along the locking screw rod to enable the conical sealing piece to be far away from or close the pipeline opening. The plug provided by the utility model can be used for plugging the pipe orifice of the underwater open pipeline, so that the underwater working difficulty of a diver can be reduced, the underwater working time is shortened, the operation is convenient, the safety and reliability are realized, and the underwater operation risk of the diver and the river water backflow risk during the pipeline construction are reduced.

Description

Underwater temporary pipeline plug

Technical Field

The utility model relates to the field of pipeline construction, in particular to an underwater temporary pipeline plug.

Background

Some hydroelectric generating sets overhaul water collection wells to drain, use the immersible pump to drain to the downstream reservoir, the outlet is located below the water surface of downstream reservoir, and is submerged for a long time. The pipeline from the pump room to the water outlet is pre-buried, and the water leakage of the outlet valve of the water pump needs to be overhauled and replaced, so that the water outlet of the pipeline needs to be temporarily plugged to prevent water from flowing backward to the pump room. The water outlet of the plugging pipeline is plugged by using a wood plug according to the experience practice, and then the wood plug is plugged by a knocking mode.

The existing solution is to arrange a diver to submerge under water to plug a pipe orifice by using a wood plug, because the wood density is small, the buoyancy in water is larger than the gravity, the diver is very difficult to carry the wood plug under water to plug, more difficult is that the diver needs to plug the wood plug in a knocking way under water, because the diver has larger resistance in water, the diver is very difficult to hit hard, and in case the wood plug falls off in the construction process, the risk of flooding a machine room exists. In addition, the wooden plug is not easy in the dismantling process, and a diver takes out the wooden plug in a knocking mode, so that time and labor are wasted.

Disclosure of utility model

The utility model aims to solve the problems of inconvenient operation and great potential safety hazard existing in the conventional method for plugging an underwater open pipeline orifice, and provides a temporary pipeline plug which is convenient to mount and dismount, safe and reliable in structure and capable of being manufactured on site.

The utility model is realized by the following technical scheme.

The utility model provides a interim pipeline end cap under water, including the blind flange, the toper sealing member, clamping assembly and locking assembly, the big terminal surface and the blind flange laminating of toper sealing member are fixed, little terminal surface is towards the pipeline mouth of pipe, clamping assembly includes the annular plate, clamping bolt and clamping nut, the annular plate cover is outside the pipeline, clamping nut fixes at the annular plate terminal surface, clamping bolt screw in clamping nut radially presss from both sides tight pipeline, locking assembly includes locking screw and locking nut, locking screw penetrates the blind flange and the tip is fixed on the annular plate, locking nut screw in locking screw fastening blind flange, the toper sealing member can be followed locking screw back-and-forth movement and is kept away from or shutoff pipeline mouth of pipe.

Further, the conical sealing piece is composed of a conical sealing ring and epoxy resin poured into the conical sealing ring.

Further, the lock nut also comprises a group of rear lock nuts which are positioned at the rear end of the flange cover and screwed into the lock screw.

Further, the locking screw ends are spot welded to the ring plate.

Further, the locking assembly comprises four groups of locking screws which are uniformly distributed on the flange cover in the circumferential direction.

Further, the clamping nut is spot welded to the end face of the ring plate.

Further, the flange cover, the annular plate, the clamping assembly and the locking assembly are all made of metal.

The beneficial effects of the utility model are as follows:

(1) The plug provided by the utility model can be used for plugging the pipe orifice of the underwater open pipeline, so that the underwater working difficulty of a diver can be reduced, the underwater working time is shortened, the operation is convenient, the safety and reliability are realized, and the underwater operation risk of the diver and the river water backflow risk during the pipeline construction are reduced.

(2) The plug provided by the utility model is made of metal, the buoyancy in water is smaller than gravity, and the plug is convenient to send to underwater operation.

(3) The plug provided by the utility model is provided with the bidirectional nut, and is convenient to operate and convenient to use by only using a light tool.

(4) The plug provided by the utility model is provided with the locking device, the locking bolt provides radial pressure between the flange and the pipeline, the plug is prevented from falling off, and the locking device is safe and reliable.

Drawings

Fig. 1 is a schematic left view of an underwater temporary pipeline plug according to the utility model.

Fig. 2 is a schematic A-A cross-sectional view of the plug of fig. 1.

Fig. 3 is a schematic perspective view of an underwater temporary pipeline plug according to the present utility model.

In the figure: flange cover 1, conical seal 2, conical seal ring 21, epoxy resin 22, pipe 3, ring plate 41, clamping bolt 42, clamping nut 43, locking screw 51, locking nut 52, back locking nut 53.

Detailed Description

The structure to which the present utility model relates or these terms of technology are further described below. These descriptions are merely illustrative of how the present utility model may be implemented and are not intended to be in any way limiting.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly specified and limited otherwise, references to "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral body; either directly or indirectly, through intermediaries, or in communication with each other, or in interaction with each other, unless explicitly defined otherwise. The above terms are understood in the specific meaning of the present utility model according to circumstances, for those of ordinary skill in the art.

As shown in fig. 1-3, an underwater temporary pipeline plug comprises a flange cover 1, a conical sealing element 2, a clamping assembly and a locking assembly, wherein the large end face of the conical sealing element 2 is fixedly attached to the flange cover 1, the small end face faces towards a pipeline 3 pipe orifice, the clamping assembly comprises a ring plate 41, a clamping bolt 42 and a clamping nut 43, the ring plate 41 is sleeved outside a pipeline 3, the clamping nut 43 is fixedly arranged on the end face of the ring plate 41, the clamping bolt 42 is screwed into the clamping nut 43 to radially clamp the pipeline 3, the locking assembly comprises a locking screw 51 and a locking nut 52, the locking screw 51 penetrates into the flange cover 1, the end part of the locking screw is fixedly arranged on the ring plate 41, the locking nut 52 is screwed into the locking screw 51 to fasten the flange cover 1, and the conical sealing element 2 can move forwards and backwards along the locking screw 51 to enable the conical sealing element 2 to be far away from or block the pipeline pipe orifice.

As an alternative embodiment, the cone seal 2 is composed of a cone seal 21 and an epoxy resin 22 poured into the cone seal 21. The conical sealing ring 21 is formed by rolling a fan-shaped rubber pad, is placed on the flange cover 1 after being rolled into a cone shape, is adjusted uniformly in center, and is obtained by pouring epoxy resin 22 into the conical sealing ring 21 and hardening the epoxy resin.

As an alternative embodiment, the lock nut 52 further comprises a set of rear lock nuts 53, the rear lock nuts 53 being located at the rear end of the flange cover 1 and screwed into the lock screw 51. The front-back bidirectional nut is arranged, the installation and the disassembly are considered, and the diver only uses a light tool (an open spanner) in the underwater installation and disassembly process, so that the use of weights such as an iron hammer and the like to knock is avoided, the underwater operation difficulty is reduced, and the underwater operation of the diver is facilitated.

As an alternative embodiment, the ends of the locking screw 51 are spot welded to the ring plate 41.

As an alternative embodiment, the locking assembly comprises four sets of locking screws 51 circumferentially distributed on the flange cover 1. Of course, the number of locking screws is not limited thereto.

As an alternative embodiment, the clamping nut 43 is spot welded to the end face of the ring plate 41. The number of the lock nuts 43 is not limited, and may be 3, 4 or more, and they are uniformly distributed on the ring plate 41. The clamping bolt 42 is screwed into the clamping nut 43 to act on the outer wall of the pipeline, radial pressure is formed between the annular plate 41 and the pipeline, the annular plate 41 is firmly locked on the pipeline, the whole plug is prevented from falling off, and the safety and reliability are realized.

As an alternative embodiment, the flange cover 1, the annular plate 41, the clamping assembly and the locking assembly are all made of metal, so that gravity is greater than the buoyancy in water, and the gravity can be easily conveyed to the pipe orifice of the sealed pipe by using a rope, so that the rope is prevented from being brought to the water by a diver, and the operation difficulty of the diver is reduced.

The plug provided by the utility model can be used for plugging the underwater open pipe orifice, so that the underwater working difficulty of a diver can be reduced, the underwater working time is shortened, the operation is convenient, the safety and reliability are realized, and the underwater operation risk of the diver and the river water backflow risk during the pipeline construction are reduced. The plug has excellent sealing performance, and the plug can not leak or be abnormal under the pressure of 1MPa through a pressure test. The wood plug is used, so that a small amount of leakage is usually generated, and compared with the wood plug, the plug has a better sealing effect and is more beneficial to pipeline construction.

When the flange cover is assembled, the back locking nut 53 is screwed into the locking screw rod 51, then the flange cover 1 is penetrated into the locking screw rod 51, and then the locking nut 52 is screwed into the locking screw rod 51. When the sealing device is installed underwater, the annular plate 41 of the plug is directly sleeved on the sealed pipeline 3, so that the conical sealing element 2 is tightly attached to the pipe orifice of the sealed pipeline 3, then the clamping bolts 42 are symmetrically and uniformly screwed first, the plug is fixed on the sealed pipeline 3, then the locking nuts 52 are symmetrically screwed, the conical sealing element 2 is tightly pressed on the pipe orifice of the sealed pipeline 3, and then the rear locking nuts 53 are reversely locked, so that the flange cover 1 is locked in a bidirectional manner. During underwater disassembly, the locking nut 52 is firstly symmetrically unscrewed, then the locking nut 53 is reversely screwed, the conical sealing piece 2 slowly withdraws from the pipe orifice of the sealed pipeline 3, then the clamping bolt 42 is unscrewed, and finally the plug is integrally removed.

The foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. An underwater temporary pipeline plug, which is characterized in that: including the blind flange, the toper sealing member, clamping assembly and locking subassembly, the big terminal surface and the blind flange laminating of toper sealing member are fixed, little terminal surface is towards the pipeline mouth of pipe, clamping assembly includes the annular plate, clamping bolt and clamping nut, the annular plate cover is outside the pipeline, clamping nut fixes at the annular plate terminal surface, clamping bolt screw in clamping nut radially presss from both sides tight pipeline, locking subassembly includes locking screw and locking nut, locking screw penetrates the blind flange and the tip is fixed on the annular plate, locking nut screw in locking screw fastening blind flange, toper sealing member can be followed locking screw back-and-forth movement and is kept away from or shutoff pipeline mouth of pipe.

2. The subsea temporary pipeline plug according to claim 1, wherein: the conical sealing piece consists of a conical sealing ring and epoxy resin poured into the conical sealing ring.

3. The subsea temporary pipeline plug according to claim 1, wherein: the locking nut also comprises a group of rear locking nuts which are positioned at the rear end of the flange cover and screwed into the locking screw.

4. The subsea temporary pipeline plug according to claim 1, wherein: the end of the locking screw is spot-welded on the annular plate.

5. The subsea temporary pipeline plug according to claim 1, wherein: the locking assembly comprises four groups of locking screws which are uniformly distributed on the flange cover in the circumferential direction.

6. The subsea temporary pipeline plug according to claim 1, wherein: the clamping nut is spot welded on the end face of the annular plate.

7. The subsea temporary pipeline plug according to claim 1, wherein: the flange cover, the annular plate, the clamping component and the locking component are all made of metal.