A large chemical container welding port plugging device

Abstract

The utility model discloses a large -scale chemical container weld mouth leaking stoppage device, including threaded rod, sealed air bag pad, nut and steel sheet, sealed air bag pad sets up at the bottom of threaded rod, and the fixed conduit has on sealed air bag pad, and the conduit passes through from the inside of threaded rod, and the conduit is glued fixed with threaded rod, and the valve is set up on the conduit, and the outside of threaded rod is detachably installed with nut and steel sheet, and the steel sheet is located the below of nut. The utility model does not need to weld, and the installation is convenient, can carry out the plugging to the leakage point from inside and outside two sides simultaneously, and the effect of preventing leakage is good.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, and in particular to a leak-sealing device for weld joints of large chemical containers. Background Technology

[0002] In chemical production processes, chemical equipment storing corrosive media or prone to daily corrosion can easily leak at weld joints. Due to the large diameter of storage containers, the lack of pressure points on their surfaces, and the presence of numerous surface attachments, leak sealing using clamps is not feasible. Furthermore, the presence of flammable and explosive media inside the equipment necessitates extensive use of blind flanges and the introduction of inert gas to vent the internal components before welding can be performed, increasing operation time, impacting production, and posing a risk of explosion during partial shutdowns. Therefore, there is an urgent need to develop a large-scale chemical container weld joint sealing device that requires no welding, is easy to install, and can simultaneously seal leaks from both the inside and outside, providing excellent leak prevention. This device would overcome the shortcomings of current applications and meet current needs. Utility Model Content

[0003] The purpose of this invention is to provide a leak-sealing device for weld joints of large chemical containers to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A leak-sealing device for weld joints of large chemical containers includes a threaded rod, a sealing airbag, a nut, and a steel plate. The sealing airbag is disposed at the bottom of the threaded rod, and a conduit is fixed on the sealing airbag. The conduit passes through the inside of the threaded rod and is adhered and fixed to the threaded rod. A valve is disposed on the conduit. The nut and the steel plate are detachably installed on the outside of the threaded rod, and the steel plate is located below the nut.

[0006] Preferably, a rubber pad is fixed to the bottom of the steel plate.

[0007] Preferably, the thickness of the steel plate is 5mm.

[0008] The beneficial effects of this utility model are as follows: When using this large chemical container weld sealing device, locate the leak in the chemical storage tank, then pass a threaded rod through the leak, allowing the sealing airbag to enter the tank. Next, open the valve and use an external air pump to inflate the airbag until its expanded size exceeds the leak size. Close the valve to maintain the inflated airbag. Then, lift the threaded rod upwards; the airbag will be blocked at the leak. Next, install the steel plate and nut onto the threaded rod, gradually tightening the nut to press the steel plate and rubber gasket against the outer wall of the chemical storage tank. At this point, the sealing airbag is tightly fitted against the inner wall of the tank, effectively sealing the leak from both the inside and outside with the airbag and rubber gasket. In summary, this utility model requires no welding, is easy to install, and can simultaneously seal leaks from both the inside and outside, providing excellent leak prevention. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0010] Figure 2 This is an exploded view of the present invention.

[0011] Figure 3 This is a schematic diagram showing the installation and use of this utility model.

[0012] Legend:

[0013] 1. Threaded rod; 2. Sealing airbag gasket; 201. Conduit; 202. Valve; 3. Nut; 4. Steel plate; 401. Rubber gasket. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] Specific implementation examples are given below.

[0016] See Figures 1-3In this embodiment of the present invention, a leak-sealing device for weld joints of a large chemical container includes a threaded rod 1, a sealing airbag 2, a nut 3, and a steel plate 4. The sealing airbag 2 is disposed at the bottom of the threaded rod 1, and a conduit 201 is fixed on the sealing airbag 2. The conduit 201 passes through the inside of the threaded rod 1 and is adhered and fixed to the threaded rod 1. A valve 202 is disposed on the conduit 201. The nut 3 and the steel plate 4 are detachably installed on the outside of the threaded rod 1. The steel plate 4 is located below the nut 3, and a rubber pad 401 is fixed at the bottom of the steel plate 4. The rubber pad 401 has a certain elastic deformation capability, which enables it to better fit the outer surface of the chemical storage tank. The diameter of the threaded rod 1 can be selected according to the size of the leak hole on the chemical storage tank, and the threaded rod 1 can pass through the leak hole.

[0017] The thickness of the steel plate 4 is 5mm.

[0018] Working principle: This large chemical container weld sealing device works by locating the leak in the chemical storage tank. The threaded rod 1 is then passed through the leak, allowing the sealing airbag 2 to enter the tank. Valve 202 is then opened, and an external air pump is used to inflate the sealing airbag 2 until its expanded size exceeds the size of the leak. Valve 202 is then closed to maintain the inflated state of the sealing airbag 2. The threaded rod 1 is then lifted upwards, blocking the sealing airbag 2 at the leak. The steel plate 4 and nut 3 are then installed onto the threaded rod 1, and the nut 3 is gradually tightened, pressing the steel plate 4 and rubber gasket 401 against the outer wall of the chemical storage tank. At this point, the sealing airbag 2 is tightly fitted against the inner wall of the tank, effectively sealing the leak from both the inside and outside with the sealing airbag 2 and rubber gasket 401.

[0019] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leak-sealing device for weld joints of large chemical containers, characterized in that, The device includes a threaded rod (1), a sealing airbag (2), a nut (3), and a steel plate (4). The sealing airbag (2) is located at the bottom of the threaded rod (1). A conduit (201) is fixed on the sealing airbag (2). The conduit (201) passes through the inside of the threaded rod (1) and is adhered and fixed to the threaded rod (1). A valve (202) is provided on the conduit (201). The nut (3) and the steel plate (4) are detachably installed on the outside of the threaded rod (1). The steel plate (4) is located below the nut (3).

2. The leak-sealing device for weld joints of large chemical containers according to claim 1, characterized in that, A rubber pad (401) is fixed to the bottom of the steel plate (4).

3. The leak-sealing device for weld joints of large chemical containers according to claim 1, characterized in that, The thickness of the steel plate (4) is 5 mm.

Images