CN214305885U - Device for replacing small-caliber valve on line after plugging and throttling by adopting injection agent - Google Patents

Abstract

The utility model relates to an adopt and annotate device of online change small-bore valve behind agent shutoff throttle belongs to valve technical field, and saddle mouth nipple joint sets up on the pipeline, is provided with the trompil on the saddle mouth nipple joint and annotates the agent valve, is provided with injection tool on the agent valve is annotated in the trompil, the utility model provides an adopt to annotate the device of online change small-bore valve behind the agent shutoff throttle, install the injection valve additional after adopting online trompil, annotate the agent through annotating the agent valve and play the effect of throttle medium to the valve upper reaches with the sealant to realize changing the valve on line, break through the construction space restriction, the construction space is little, and the flexible operation, construction cost reduces, has realized changing the interior small-bore valve that leaks on line.

Description

Device for replacing small-caliber valve on line after plugging and throttling by adopting injection agent

Technical Field

The utility model relates to the technical field of valves, concretely relates to adopt on-line change small-bore valve's device behind annotating agent shutoff throttle.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. In daily production and operation, the phenomenon of valve internal leakage often occurs due to long-term scouring of media. The valve internal leakage loses the original throttling function of the switch of the valve. However, many devices cannot be stopped for maintenance, and how to replace the valve without stopping production is an urgent problem to be solved by many production enterprises. In the traditional process, no matter the medium condition of a pipeline is large or small, if the valve is required to be replaced on line without stopping conveying, the construction is carried out by adopting a method of installing a lower plugging head of a plugging device with pressure. And the small-sized pressurized plugging device also needs 6 meters of working space to be implemented. Thus, some sites without construction space cannot be implemented. And the valve is replaced by adopting a method of blocking under pressure on the site with an operation space, and the cost to be paid is several times or even dozens of times higher than that of the valve. The problems of strict construction conditions, limited space, high construction cost and the like exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model relates to an adopt on-line change small-bore valve's device behind annotating agent shutoff throttle.

A device for on-line replacing a small-caliber valve after plugging throttling by adopting an injection agent comprises: saddle mouth nipple joint, trompil are annotated agent valve and injection tool, saddle mouth nipple joint sets up on the pipeline, is provided with the trompil on the saddle mouth nipple joint and annotates the agent valve, is provided with injection tool on the agent valve is annotated to the trompil.

Furthermore, the lower end of the saddle port short section is welded at the upper stream of the medium flowing in the inner leakage valve and at the position 100mm away from the inner leakage valve, and a first flange is arranged at the upper end of the saddle port short section and connected with the tapping injection valve.

Further, the lower end of the opening injection valve is provided with a second flange, the second flange is connected with the first flange through a bolt, and the right side of the opening injection valve is provided with a valve handle.

Further, the injection tool is arranged at the left end of the opening injection valve and is communicated with the opening injection valve.

Further, a pressure gauge is arranged on the injection tool.

The utility model has the advantages that:

the utility model provides an adopt to annotate device of online change small-bore valve after agent shutoff throttle adopts and installs the injection valve additional behind the online trompil, annotates the agent through annotating the agent valve and plays the effect of throttle medium to the valve upper reaches with the sealant to realize changing the valve on line, break through the construction space restriction, the construction space is little, the flexible operation, construction cost reduces, has realized the little valve of hourglass in the online change.

Drawings

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

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

wherein:

1. saddle port nipples; 2. A perforated injection valve; 3. An injection tool;

11. a first flange; 21. A second flange; 22. A valve handle.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the installation manners and technical terms mentioned in the present invention are technical terms that have been clearly known in the technical field, and thus, the explanation thereof is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.

The first embodiment is as follows:

the utility model relates to an adopt on-line change device of small-bore valve after annotating agent shutoff throttle, include: saddle mouth nipple joint 1, trompil are annotated agent valve 2 and injection tool 3, saddle mouth nipple joint 1 sets up on the pipeline, be provided with the trompil on saddle mouth nipple joint 1 and annotate agent valve 2, be provided with injection tool 3 on the agent valve 2 is annotated in the trompil, so set up and solved that the construction space is limited, construction cost is high, can not change the problem of valve on line, install additional after adopting online trompil and annotate agent valve 2, pour into the sealant into the valve upper reaches through annotating agent valve 2 and play the effect of throttling medium, thereby realize changing the valve on line, break through the construction space restriction, it is little to have reached the construction space, the flexible operation, effects such as construction cost reduction.

The lower end of the saddle port short section 1 is welded at the upper stream of medium flowing in the inner leakage valve and at the position 100mm away from the inner leakage valve, the flange I11 is arranged at the upper end of the saddle port short section 1, the flange I11 is connected with the tapping agent injection valve 2, the problem that the throttling effect of agent injection plugging is not ideal is solved, the lower end of the saddle port short section 1 is welded at the upper stream of medium flowing in the inner leakage valve and at the position 100mm away from the inner leakage valve, the sealant is sufficient, and the good throttling effect of agent injection plugging is achieved.

The lower extreme of agent valve 2 is annotated in the trompil is provided with flange two 21, and flange two 21 passes through bolted connection with flange one 11, and the right side of agent valve 2 is annotated in the trompil is provided with valve handle 22, so set up and solved that the agent valve 2 is annotated in the trompil and saddle mouth nipple joint 1 is connected unstable, not tight problem, through annotating at the trompil respectively and annotating on agent valve 2 and saddle mouth nipple joint 1 and pass through bolted connection, reached and connected firmly, sealed tight effect.

The injection tool 3 is arranged at the left end of the hole opening injection valve 2 and is communicated with the hole opening injection valve 2, and the arrangement enables a pressure gauge on the injection tool 3 to detect the pressure in the pipeline.

The injection tool 3 is provided with a pressure gauge, which is arranged to facilitate control of the sealant usage.

Example two:

a method for replacing a small-diameter valve on line after plugging and throttling by adopting an injection agent is characterized by comprising the following steps:

s1: according to the flowing direction of the medium, a saddle nipple 1 is welded at a position which is 100mm away from the inner leakage valve at the upstream of the inner leakage valve, so that the sealant is sufficient, and a good sealant injection, blocking and throttling effect is achieved;

s2: installing a tapping and injection valve 2 on the saddle port nipple 1;

s3: opening a hole below DN50 on the original pipeline by a method of opening a hole under pressure;

s4: mounting an injection tool 3 on the open-pore injection valve 2;

s5: opening the opening agent injection valve 2, and injecting sealant into the original pipeline through the opening agent injection valve 2;

s6: the sealant can be extruded towards the direction of the inner leakage valve under the action of medium pressure in the pipeline, a pressure gauge of the injection tool 3 is observed until the pressure does not rise any more, namely the sealant is filled in the space between the hole-opening sealant injection valve 2 and the inner leakage valve, the hole-opening sealant injection valve 2 is closed, the purpose of cutting off the flow of the medium is realized, the sealant injection tool is always in a pressure maintaining state in the process, and the arrangement is convenient for controlling the sealant consumption to avoid waste or insufficient sealant consumption;

s7: emptying and recovering media at the downstream of the internal leakage valve, preparing a new valve, quickly detaching the original internal leakage valve, installing the new valve, and enabling the new valve to be in a closed state;

s8: after the installation is completed, a new valve is opened, the injection tool 3 is removed, and the sealant blocking the throttling is discharged under the action of the medium flow pressure.

The working process is as follows:

according to the flowing direction of a medium, a saddle mouth short section 1 is welded at a position which is 100mm away from the inner leakage valve at the upstream of the inner leakage valve; installing a tapping and injection valve 2 on the saddle port nipple 1; opening a hole below DN50 on the original pipeline by a method of opening a hole under pressure; mounting an injection tool 3 on the open-pore injection valve 2; opening the opening agent injection valve 2, and injecting sealant into the original pipeline through the opening agent injection valve 2; the sealant can be extruded towards the direction of the inner leakage valve under the action of medium pressure in the pipeline, the pressure gauge of the injection tool 3 is observed until the pressure does not rise any more, namely the sealant is filled in the space between the opening sealant injection valve 2 and the inner leakage valve, the opening sealant injection valve 2 is closed, the purpose of cutting off the medium flow is realized, and the sealant injection tool is always in a pressure maintaining state in the process; emptying and recovering media at the downstream of the internal leakage valve, preparing a new valve, quickly detaching the original internal leakage valve, installing the new valve, and enabling the new valve to be in a closed state; after the installation is finished, a new valve is opened, the injection tool 3 is removed, the sealant for blocking throttling is discharged under the action of medium flow pressure, and the on-line replacement of the inner leakage valve is finished.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims (5)

1. The utility model provides an adopt and annotate device that online change small-bore valve of agent shutoff throttle which characterized in that includes: saddle mouth nipple joint (1), trompil are annotated agent valve (2) and injection tool (3), saddle mouth nipple joint (1) sets up on the pipeline, is provided with the trompil on saddle mouth nipple joint (1) and annotates agent valve (2), is provided with injection tool (3) on trompil is annotated agent valve (2).

2. The device for replacing the small-caliber valve on line after plugging throttling by the injection agent is characterized in that the lower end of the saddle port short section (1) is welded at the position which is 100mm away from the inner leakage valve and is positioned at the upstream of the medium flowing in the inner leakage valve, the upper end of the saddle port short section (1) is provided with a first flange (11), and the first flange (11) is connected with the tapping injection agent valve (2).

3. The device for replacing the small-caliber valve on line after plugging and throttling by the injection agent is characterized in that a second flange (21) is arranged at the lower end of the opening injection valve (2), the second flange (21) is connected with the first flange (11) through a bolt, and a valve handle (22) is arranged on the right side of the opening injection valve (2).

4. The device for on-line replacement of the small-bore valve after plugging throttling with the injection agent is characterized in that the injection tool (3) is arranged at the left end of the open-hole injection valve (2) and is communicated with the open-hole injection valve (2).

5. The device for on-line replacement of the small-caliber valve after plugging throttling by the injection agent is characterized in that a pressure gauge is arranged on the injection tool (3).

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