CN218409037U

CN218409037U - Emergency online leakage blocking device for steam branch pipe leakage

Info

Publication number: CN218409037U
Application number: CN202222637935.3U
Authority: CN
Inventors: 郭建辉; 徐东升
Original assignee: Jiangsu Jiangheng Valves Co ltd
Current assignee: Jiangsu Jiangheng Valves Co ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-01-31
Anticipated expiration: 2032-10-09

Abstract

The utility model provides an urgent online plugging device of steam branch pipe leakage, including steam conveying pipeline, steam branch pipe and flange formula trip valve, steam conveying pipeline's middle part and steam branch pipe intercommunication, sleeve pipe and flange formula trip valve be assembled between/be connected between is passed through to steam branch pipe's one end. The utility model selects the flange type cut-off valve which is matched with the pressure and temperature of the leakage steam pipeline and can be a gate valve, a stop valve or a ball valve, etc.; the connection form of the valve can be flange, socket welding or butt welding; a valve connected with a flange needs to be provided with a reverse flange and welded with a sleeve; the inner diameter of the valve or the sleeve is larger than the outer diameter of the steam branch pipe so as to be conveniently sleeved in the steam branch pipe, and the leakage stopping effect is good.

Description

Emergency online leakage blocking device for steam branch pipe leakage

Technical Field

The utility model belongs to the technical field of the leaking stoppage of steam conveying pipeline branch pipe, a urgent online plugging device of steam branch pipe leakage is related to.

Background

In the process of modern industrial production, steam is widely used as an important heat medium, when steam delivery pipeline branch pipe causes the steam pipeline to appear great rupture or pipeline fracture because of artificial reason or uncontrollable factor, and the unable parking of steam generation system or parking will cause serious loss, do not possess the valve of closing steam leakage at steam leakage point upper reaches, under the condition of this kind of occurence of failure, the steam leakage point will directly leak the primary steam in the pipeline, cause direct economic loss, high temperature and high pressure steam threatens personnel's safety, primary steam directly discharges atmospheric meeting environmental pollution and noise pollution etc.. Because the temperature and the pressure of the primary steam are higher, an operator cannot approach a leakage point, fog near the leakage point is diffused after the steam is leaked, and the operator cannot see the field condition clearly, so that the simple leakage stopping method such as clamping sleeve, pressurized repair welding and the like cannot realize leakage stopping.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an urgent online plugging device of steam branch pipe leakage to solve the steam branch pipe that proposes in the above-mentioned background art because fracture or the great and unable online leaking stoppage blank of fracture that ftractures, do not influence the normal work of steam trunk line in the implementation process, reduced the accident risk, avoided the problem that the system parkked.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an urgent online plugging device of steam branch pipe leakage, includes steam conveying pipeline, steam branch pipe and flange formula trip valve, steam conveying pipeline's middle part and steam branch pipe intercommunication, the one end of steam branch pipe is passed through sleeve pipe and flange formula trip valve be assembled between/be connected between.

In the emergency online leakage plugging device for the steam branch pipe leakage, the diameter of the sleeve is larger than the outer diameter of the steam branch pipe.

Compared with the prior art, the utility model relates to an urgent online plugging device of steam branch pipe leakage's advantage does: selecting a flange type cut-off valve which is matched with the pressure and temperature of the leaked steam pipeline and can be a gate valve, a stop valve or a ball valve and the like; the connection form of the valve can be flange, socket welding or butt welding; a valve connected with a flange needs to be provided with a reverse flange and welded with a sleeve; the inner diameter of the valve or the sleeve is larger than the outer diameter of the steam branch pipe so as to be conveniently sleeved into the steam branch pipe, and the leakage stopping effect is good.

Drawings

Fig. 1 is a schematic structural view of a steam delivery pipe and a steam branch pipe.

The steam branch pipe fracture shown in FIG. 2 is welded with a flange type cut-off valve.

The flange type cut-off valve with a sleeve is welded at the fracture of the steam branch pipe shown in figure 3.

Fig. 4 is a schematic view of the flange cut-off valve 3 in butt joint with the steam branch pipe 2.

In the figure, 1, a steam delivery pipeline; 2. a steam branch pipe; 23. a sleeve; 3. flange formula trip valve.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The utility model relates to an urgent online plugging device of steam branch pipe leakage.

As shown in fig. 1, 2 and 3, when a branch steam pipe 2 of a steam conveying pipeline 1 is broken or has a large-break crack, cutting off a pipe section of the branch steam pipe 2 downstream of the broken part so as to weld a flange-type cut-off valve 3 to control leakage;

as shown in fig. 2 and 3, a flange type cut-off valve 3 is sleeved at the steam branch pipe 2 and is reliably welded. The size of the inner hole of the valve or the sleeve is larger than the outer diameter of the branch pipe, so that the steam branch pipe 2 can be smoothly sleeved in the long-distance operation process; the flange type cut-off valve 3 is required to be fully opened before being sleeved;

before the flange type cut-off valve 3 is sleeved into the branch pipe, operators must wear sound insulation earplugs, high-temperature scald-proof protective clothing and the like;

as shown in fig. 4, after the flange-type cut-off valve 3 is sleeved into the steam branch pipe 2, a venturi effect is formed due to high-speed injection of steam, and a slight negative pressure is formed at a gap between the flange-type cut-off valve 3 and the steam branch pipe 2, which is beneficial to smooth implementation of welding.

After the flange type cut-off valve 3 and the steam branch pipe 2 are welded, the valve is closed, and plugging is smoothly completed; and the pipeline at the rear end of the branch pipe is installed afterwards, and the normal work of the steam pipeline is recovered.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The emergency online leakage stopping device for the leakage of the steam branch pipe comprises a steam conveying pipeline (1), the steam branch pipe (2) and a flange type cut-off valve (3), and is characterized in that the middle of the steam conveying pipeline (1) is communicated with the steam branch pipe (2), and one end of the steam branch pipe (2) is assembled and connected with the flange type cut-off valve (3) through a sleeve (23); the diameter of the sleeve (23) is larger than the outer diameter of the steam branch pipe (2); a gap for welding is formed between the sleeve (23) and the steam branch pipe (2).