Emergency leaking stoppage device for flange

Abstract

The utility model belongs to the technical field of flange leaking stoppage, and particularly relates to a flange emergency leaking stoppage device which comprises a flange, a first fastening piece and a second fastening piece, the first fastening piece and the second fastening piece are installed on the flange, a pressure relief hole is formed in the first fastening piece, a valve is installed on the pressure relief hole, and a glue injection hole is formed in the second fastening piece. The device is provided with a sealing hole and a pressure relief hole, sealant can be directly injected between the two flanges and cannot be ejected out by leakage pressure, the sealant injection pressure is low, and the sealant solidification time is provided; glue leakage is avoided; the fastening bolts on the two sides facilitate installation and use of the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of flange leakage plugging, and in particular relates to a flange emergency leakage plugging device. Background Art

[0002] The connection flanges between equipment and pipelines are mostly sealed by gaskets and bolts. When the pipeline or equipment is subjected to thermal stress or other external forces, the flange will be unevenly stressed. When the force exceeds the maximum bearing limit of the bolts, the bolts will be stretched, the gap between the flanges will suddenly increase, the gasket will fail to seal, and leakage will occur.

[0003] At present, most maintenance methods are to shut down for inspection and replace the gasket or to perform thorough welding on the outside of the flange. The shutdown inspection and maintenance time is long, the online welding operation is difficult and involves hot work, which increases the operational risk. For example, pipelines of flammable gases such as gas must be welded under special conditions; the overall cost of shutting down for inspection and replacement of gaskets is too high; pipelines or valves that transport special media may not be shut down or the shutdown operation process is too long; the risk of leakage may increase during this period; if the online welding mode is adopted, the operational risk is high, and the gasket is located on the inside of the flange bolts, the flange bolts also need to be welded synchronously, the welding workload is large, and new stress will be generated during the welding process, which may cause the leakage to increase. Utility Model Content

[0004] The utility model aims to provide a flange emergency leakage plugging device.

[0005] The utility model solves the technical problem by adopting the following technical solution: a flange emergency plugging device, comprising a flange and a first fastener and a second fastener installed on the flange, the first fastener being provided with a pressure relief hole, a valve being installed on the pressure relief hole, and the second fastener being provided with a glue injection hole.

[0006] Specifically, the first fastener and the second fastener are both provided with an outer pressure-bearing ring, a side pressure-bearing ring and a side seal.

[0007] Specifically, the first fastener and the second fastener are both connected by fastening bolts.

[0008] The utility model has the following beneficial effects:

[0009] 1) The device is equipped with sealing and pressure relief holes, which can directly inject the sealant between the two flanges without being pushed out by leakage pressure. The low injection pressure provides more time for the glue to solidify;

[0010] 2) The fastening bolts on both sides can facilitate the installation of the device and make it easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] In the figure: 1-first fastener; 2-second fastener; 3-pressure relief hole; 4-valve; 5-glue injection hole; 6-outer pressure ring; 7-side pressure ring; 8-fastening bolt. DETAILED DESCRIPTION

[0013] The utility model will now be further described in detail with reference to the accompanying drawings.

[0014] like Figure 1 As shown, a flange emergency plugging device includes a flange and a first fastener 1 and a second fastener 2 installed on the flange, the first fastener 1 is provided with a pressure relief hole 3, a valve 4 is installed on the pressure relief hole 3, and the second fastener 2 is provided with a glue injection hole 5.

[0015] The first fastener 1 and the second fastener 2 are both provided with an outer pressure ring 6 and a side pressure ring 7 .

[0016] The first fastening member 1 and the second fastening member 2 are both connected by a fastening bolt 8 .

[0017] The method of using the utility model is as follows: when the flange leaks, find the leakage point, align the pressure relief hole 3 on the first fastener 1 with the leakage point, then connect the first fastener 1 and the second fastener 2 by the fastening bolt 8, use a glue injection machine or a grouting machine to press the glue or grouting material into the device and the flange through the glue injection hole 5, use pressure to fill the gap between the flanges, the gap between the leaking flange and the bolt, and the gap between the device and the flange with sealant or grouting material, and achieve overall sealing after solidification, and then close the valve of the pressure relief hole 3 to completely solve the flange leakage problem and achieve online repair of flange leakage. The whole process does not involve hot work, etc., and is suitable for the treatment of flange leakage in various media pipelines.

[0018] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flange emergency plugging device, characterized in that: It comprises a flange and a first fastener and a second fastener installed on the flange. The first fastener is provided with a pressure relief hole, a valve is installed on the pressure relief hole, and the second fastener is provided with a glue injection hole.

2. A flange emergency leak plugging device according to claim 1, characterized in that: The first fastener and the second fastener are both provided with an outer pressure-bearing ring and a side pressure-bearing ring.

3. A flange emergency leak plugging device according to claim 1, characterized in that: The first fastener and the second fastener are both connected by fastening bolts.

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