Corrosion-resistant pipeline plug

Abstract

The invention relates to the technical field of pipeline plugs, in particular to a corrosion-resistant pipeline plug which comprises a plug body and a pipeline, a cylindrical hole is formed in one end of the plug body in a penetrating mode, a mounting frame is fixedly mounted in the cylindrical hole, a moving rod is horizontally inserted into the mounting frame, a plug block is fixedly mounted at one end of the moving rod, and a sealing ring is fixedly mounted at the other end of the moving rod. The movable rod is sleeved with a telescopic spring, two rectangular holes are symmetrically formed in the mounting frame, and two rectangular check blocks are symmetrically and fixedly mounted on the movable rod. When the plug body is mounted at one end of a pipeline, the plug block is separated from the plug body, and a water source of the pipeline can flow out through the cylindrical hole at the moment, so that the resistance of the water source to mounting of the plug body is reduced, a worker can mount the plug conveniently, and meanwhile, splashing of the water source can be effectively reduced; and through mutual cooperation of the telescopic spring, the moving rod and the check block, the plug block makes contact with the plug body, and the cylindrical hole is plugged.

Description

Technical Field

[0001] The invention relates to a pipeline plugging technology used in the chemical industry, and in particular to a corrosion-resistant pipeline plugging technology. Background Art

[0002] In the chemical industry, the difficulties faced by pipeline corrosion resistance mainly come from complex operating environments, pipeline materials, construction quality, etc. The pipe plug refers to an external threaded pipe fitting used to plug the internal threads at the end of the pipe. The inner hole at the end of the pipe to be plugged is tapped, and there are also threads on the cylindrical surface of the pipe plug. The pipe plug is screwed to the end of the pipe through a threaded connection to plug the unnecessary openings of the pipe and play a sealing role.

[0003] However, when the water source cannot be cut off, when sealing one end of the pipe, the staff needs to use brute force to insert or screw the plug into the pipe mouth. The high-pressure water source hinders the entry of the plug, which is very inconvenient to operate. Water will splash everywhere, thus wetting the staff.

[0004] In addition, the corrosion resistance of pipe plugs in the chemical industry is weak. For example, the carbon steel pipes commonly used in petrochemical pipelines have a microcrystalline structure and poor corrosion resistance. Such pipes are easily damaged in corrosive environments, leading to safety hazards such as leakage. In addition, the quality of the anti-corrosion layer of some pipe plugs does not meet the standards: during the pipeline construction process, an anti-corrosion layer will be covered on the surface of the pipeline or cathodic protection measures will be adopted to prevent corrosion. However, due to non-standard construction, the effects of these anti-corrosion measures are often not fully exerted. Summary of the invention

[0005] The purpose of the present invention is to solve the following shortcomings in the prior art: when blocking one end of a pipe, the staff needs to use brute force to insert or screw the plug into the pipe mouth. The high-pressure water source hinders the entry of the plug, which is very inconvenient to operate. Water will splash everywhere, thereby wetting the staff. A corrosion-resistant pipe plug is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A corrosion-resistant pipe plug, comprising a plug body and a pipe, wherein the outer surface of the plug body is provided with an external thread, one end of the pipe is provided with an internal thread, and the plug body is threadedly connected to one end of the pipe;

[0008] A cylindrical hole is formed through one end of the plug body, a mounting bracket is fixedly installed in the cylindrical hole, a movable hole is formed on the mounting bracket, a movable rod is horizontally inserted in the movable hole, a blocking block is fixedly installed on one end of the movable rod, a telescopic spring is sleeved on the movable rod, two ends of the telescopic spring are respectively fixedly connected to the blocking block and the mounting bracket, two rectangular holes are symmetrically formed on the mounting bracket, both of which are connected to the movable hole, two rectangular blocks are symmetrically fixedly installed on the movable rod, the two rectangular holes are in a horizontal state, and the two blocks are in a vertical state.

[0009] Preferably, a sealing ring is fixedly mounted on one end of the blocking block close to the plug body, an annular sealing groove is provided on one end of the plug body close to the blocking block, and the diameter of the sealing ring is the same as the diameter of the sealing groove.

[0010] Preferably, a sealing gasket is fixedly installed in the sealing groove, and the sealing gasket is a rubber ring.

[0011] Preferably, a conical guide block is fixedly mounted on a side of the blocking block away from the sealing ring, and the bottom diameter of the guide block is the same as the diameter of the blocking block.

[0012] Preferably, a rotating block is fixedly installed on the end of the moving rod away from the blocking block, and a U-shaped bracket is fixedly installed on the end of the plug body away from the blocking block. A through hole is opened on the bracket, and the moving rod is inserted in the through hole. A threaded groove is partially opened on the moving rod, and the threaded sleeve on the moving rod is connected to the nut.

[0013] Preferably, a sealing ring is fixedly mounted on one end of the plug body close to the blocking block, the sealing ring is made of corrosion-resistant material, and the diameter of the sealing ring is the same as the diameter of the plug body.

[0014] In the present invention, the beneficial effects are:

[0015] 1. When the plug is installed at one end of the pipe, the plug is separated from the plug. At this time, the water source of the pipe can flow out through the cylindrical hole, thereby reducing the resistance of the water source to the installation of the plug, making it easier for the staff to install it, and effectively reducing the splashing of the water source. When the plug is completely installed in the pipe, the plug contacts the plug through the cooperation of the telescopic spring, the moving rod and the stopper, thereby blocking the cylindrical hole, and the pipe is blocked at this time;

[0016] 2. The sealing ring can provide better sealing between the plug and the pipe, effectively prevent water from entering between the internal and external threads and corroding the internal and external threads, and effectively improve the corrosion resistance of the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a corrosion-resistant pipe plug proposed by the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure when the plug and the block are separated;

[0019] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure when the plug and the block are in contact;

[0020] Figure 4 for Figure 2 A magnified view of the structure at center;

[0021] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle.

[0022] In the figure: 1 plug body, 2 pipe, 3 cylindrical hole, 4 mounting frame, 5 moving rod, 6 blocking block, 7 telescopic spring, 8 stopper, 9 sealing ring, 10 sealing groove, 11 guide block, 12 rotating block, 13 bracket, 14 nut, 15 sealing ring, 16 rectangular hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-Figure 5 A corrosion-resistant pipe plug includes a plug body 1 and a pipe 2. The outer surface of the plug body 1 is provided with an external thread, and one end of the pipe 2 is provided with an internal thread. The plug body 1 is threadedly connected to one end of the pipe 2, and the internal thread matches the external thread. When installing the plug body 1, the plug body 1 is inserted into the end of the pipe 2 that needs to be blocked, and the plug body 1 is installed at one end of the pipe 2 through the connection between the internal thread and the external thread.

[0025] A cylindrical hole 3 is penetrated at one end of the plug body 1, a mounting frame 4 is fixedly installed in the cylindrical hole 3, a movable hole is opened on the mounting frame 4, a movable rod 5 is horizontally inserted in the movable hole, a blocking block 6 is fixedly installed at one end of the movable rod 5, a telescopic spring 7 is sleeved on the movable rod 5, and the two ends of the telescopic spring 7 are respectively fixedly connected to the blocking block 6 and the mounting frame 4, two rectangular holes 16 which are both connected to the movable hole are symmetrically opened on the mounting frame 4, and two rectangular blocks 8 are symmetrically fixedly installed on the movable rod 5, the two rectangular holes 16 are in a horizontal state, and the two blocks 8 are in a vertical state.

[0026] In the initial state, the two blocks 8 are located between the mounting frame 4 and the blocking block 6, and under the action of the elastic force of the telescopic spring 7, the blocking block 6 contacts the mounting frame 4, and at the same time, the blocking block 6 is separated from the plug body 1. When the plug body 1 is inserted into the pipe 2, the water source in the pipe 2 can pass through the space between the blocking block 6 and the plug body 1 into the cylindrical hole 3, and then be discharged from the cylindrical hole 3. Since the water source in the pipe 2 can be discharged, the resistance of the water source in the pipe 2 to the plug body 1 can be reduced, thereby facilitating the staff to install the plug body 1 at one end of the pipe 2. At the same time, when the resistance is reduced, the splashing of the water source can also be effectively reduced to avoid wetting the staff.

[0027] When the plug body 1 is completely installed in the pipe 2, rotate the moving rod 5 to rotate the two blocks 8 on the moving rod 5 to the rectangular hole 16. When the block 8 coincides with the rectangular hole 16, under the action of the telescopic spring 7 and the water flow, the block 6 will be driven to move toward the plug body 1. The block 8 passes through the rectangular hole 16 until the block 6 contacts the plug body 1 and blocks the cylindrical hole 3. At this time, the water source cannot pass through the cylindrical hole 3, thereby completing the blocking of one end of the pipe 2.

[0028] A sealing ring 9 is fixedly installed on one end of the block 6 close to the plug body 1, and an annular sealing groove 10 is opened on the end of the plug body 1 close to the block 6. The diameter of the sealing ring 9 is the same as the diameter of the sealing groove 10. A sealing gasket is fixedly installed in the sealing groove 10. The sealing gasket is a rubber ring. When the block 6 contacts the plug body 1, the sealing ring 9 installed on the block 6 will just be inserted into the sealing groove 10. Under the interaction of the sealing ring 9 and the sealing groove 10, the sealing between the block 6 and the plug body 1 can be further improved to prevent water in the pipeline 2 from overflowing.

[0029] A conical guide block 11 is fixedly installed on one side of the block 6 away from the sealing ring 9. The bottom diameter of the guide block 11 is the same as the diameter of the block 6. When the water source acts on the block 6, it will contact the guide block 11. Under the action of the guide block 11, the water source flows around, thereby reducing the force on the block 6 and further reducing the resistance during the installation of the plug body 1.

[0030] A rotating block 12 is fixedly installed on the end of the moving rod 5 away from the blocking block 6, and a U-shaped bracket 13 is fixedly installed on the end of the plug body 1 away from the blocking block 6. A through hole is opened on the bracket 13, and the moving rod 5 is inserted in the through hole. A threaded groove is partially opened on the moving rod 5, and the threaded sleeve on the moving rod 5 is connected to the nut 14. When the blocking block 6 contacts the plug body 1, the nut 14 on the moving rod 5 can be rotated. Under the action of the threaded groove, the nut 14 is driven to move in the opposite direction of the bracket 13 until the nut 14 contacts the bracket 13. Under the action of the nut 14 and the bracket 13, the moving rod 5 can be restricted from moving in the direction of the blocking block 6 to prevent the blocking block 6 from separating from the plug body 1.

[0031] A sealing ring 15 is fixedly installed at one end of the plug body 1 close to the blocking block 6. The sealing ring 15 is made of corrosion-resistant material. The diameter of the sealing ring 15 is the same as the diameter of the plug body 1. When the plug body 1 is threadedly connected in the pipe 2, the side of the sealing ring 15 is in sealing contact with the inner wall of the pipe 2. The sealing ring 15 is corrosion-resistant and can avoid corrosion of the sealing ring 15 by water. At the same time, the sealing ring 15 can prevent water from entering between the internal thread and the external thread and corroding the internal thread and the external thread.

[0032] In the present invention, when installing the plug body 1, the plug body 1 is inserted into the pipe 2, and the water source in the pipe 2 can pass through the space between the block 6 and the plug body 1 into the cylindrical hole 3, and then be discharged from the cylindrical hole 3. Since the water source in the pipe 2 can be discharged, the resistance of the water source in the pipe 2 to the plug body 1 can be reduced, so that it is convenient for the staff to install the plug body 1 at one end of the pipe 2. At the same time, when the resistance is reduced, the splashing of the water source can also be effectively seen to avoid wetting the staff.

[0033] Then rotate the moving rod 5 to rotate the two blocks 8 on the moving rod 5 to the rectangular hole 16. When the block 8 coincides with the rectangular hole 16, under the action of the telescopic spring 7 and the water flow, the block 6 will be driven to move toward the plug body 1. The block 8 passes through the rectangular hole 16 until the block 6 contacts the plug body 1 and blocks the cylindrical hole 3. At this time, the water source cannot pass through the cylindrical hole 3, thereby completing the blocking of one end of the pipe 2.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corrosion-resistant pipe plug, comprising a plug body (1) and a pipe (2), characterized in that: The outer surface of the plug body (1) is provided with an external thread, one end of the pipe (2) is provided with an internal thread, and the plug body (1) is threadedly connected to one end of the pipe (2); A cylindrical hole (3) is formed through one end of the plug body (1), a mounting frame (4) is fixedly mounted in the cylindrical hole (3), a movable hole is formed on the mounting frame (4), a movable rod (5) is horizontally inserted in the movable hole, a blocking block (6) is fixedly mounted on one end of the movable rod (5), a telescopic spring (7) is sleeved on the movable rod (5), the two ends of the telescopic spring (7) are respectively fixedly connected to the blocking block (6) and the mounting frame (4), two rectangular holes (16) are symmetrically formed on the mounting frame (4) and both are connected to the movable hole, and two rectangular blocking blocks (8) are symmetrically fixedly mounted on the movable rod (5), the two rectangular holes (16) are in a horizontal state, and the two blocking blocks (8) are in a vertical state; A sealing ring (9) is fixedly mounted on one end of the blocking block (6) close to the plug body (1); an annular sealing groove (10) is provided on one end of the plug body (1) close to the blocking block (6); the diameter of the sealing ring (9) is the same as the diameter of the sealing groove (10); a sealing gasket is fixedly mounted in the sealing groove (10); and the sealing gasket is a rubber ring; a conical guide block (11) is fixedly mounted on one side of the blocking block (6) away from the sealing ring (9); the bottom surface diameter of the guide block (11) is the same as the diameter of the blocking block (6).

2. The corrosion-resistant pipe plug according to claim 1, characterized in that: A rotating block (12) is fixedly mounted on one end of the moving rod (5) away from the blocking block (6); a U-shaped bracket (13) is fixedly mounted on one end of the plug body (1) away from the blocking block (6); a through hole is provided on the bracket (13); the moving rod (5) is inserted into the through hole; a thread groove is partially provided on the moving rod (5); and the moving rod (5) is threadedly sleeved on a nut (14).

3. The corrosion-resistant pipe plug according to claim 1, characterized in that: A sealing ring (15) is fixedly mounted on one end of the plug body (1) close to the blocking block (6); the sealing ring (15) is made of a corrosion-resistant material, and the diameter of the sealing ring (15) is the same as the diameter of the plug body (1).

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