Special blanking plate for pipe sealing

Abstract

The application relates to the technical field of pipelines, in particular to a special blanking plate for pipe sealing, which comprises a pipeline, a blanking plate arranged in contact with the mouth of the pipeline and provided with a limiting structure for limiting the blanking plate, a placing box arranged below the blanking plate and capable of being slightly displaced up and down along the inner wall of the pipeline, a sealing structure arranged in the placing box and used for sealing the mouth of the pipeline, and a positioning structure arranged in the blanking plate and connected with the blanking plate and used for assisting in positioning the blanking plate. Compared with the prior art, the special blanking plate for pipe sealing has the advantages of simple structure, quick dismounting and mounting, good sealing performance, prolonged service life of the blanking plate and strong applicability and wide pertinence.

Description

Technical Field

[0001] The invention relates to the technical field of pipelines, in particular to a special sealing plate for pipes. Background Art

[0002] During the shipbuilding production process, pipes may not be sealed or sealed properly during the shipbuilding block manufacturing, mid-ship assembly, loading and other open decks. This may cause sand balls, bolts, nuts and other debris to directly enter the pipes during the sandblasting operation, resulting in pipe blockage and even quality accidents such as equipment damage. Traditional sealing plates have the following disadvantages:

[0003] 1. The size and specification of the blind plate are single, and a blind plate of one specification can only realize the pipe opening of the same specification.

[0004] 2. Pipes without flanges are sealed with wooden plugs, which are easy to loosen during use and can easily become unable to be pulled out if used improperly.

[0005] 3. The plastic cover is easily damaged during the middle assembly and slipway stages, and the sealing purpose cannot be achieved.

[0006] Announcement number: CN 207975377 The utility model disclosed by U is a pressure pipe blocking plate, comprising a pipe, a round tube welded above the hole of the pipe, a blocking plate inside the hole, and an outer wall of the blocking plate is covered with a rubber layer, a cylinder is integrally formed in the middle of the upper end face of the blocking plate, and a cross plate is welded on the top of the left and right side walls of the cylinder, and the cross plate is placed above the pipe, and a left limiting structure and a right limiting structure are respectively provided on the left and right sides of the round pipe, and the left limiting structure includes an inclined hole, and the inclined hole is inclined to the lower right, and the inclined hole is on the left wall of the round pipe, and an inclined pipe is provided inside the inclined hole, a cover plate is welded on the left end of the inclined pipe, and a spring is provided on the right wall of the cover plate, and a connecting rod is welded on the right end of the spring, a connecting hole is opened on the left wall of the cylinder, the right end of the cylinder is inserted into the inside of the connecting hole, a round rod is installed in the middle of the left wall of the connecting rod, a round hole is opened in the middle of the left wall of the cover plate, and the left end of the round rod passes through the round hole. This solution is relatively narrow in scope and difficult to adapt to products of other specifications. Summary of the Invention

[0007] (1) Technical problems solved

[0008] In view of the deficiencies in the prior art, the present invention provides a special sealing plate for pipes, which has the characteristics of being simple and easy to operate, highly targeted and widely applicable.

[0009] (2) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a special pipe sealing plate, comprising a pipe, a plate disposed on the pipe in contact with the pipe opening, a limiting structure for limiting the position of the plate, a placement box disposed below the plate that can be slightly displaced up and down along the inner wall of the pipe, a sealing structure for sealing the pipe opening disposed within the placement box, and a positioning structure connected to the plate to assist in positioning the plate. The use of an airbag for sealing in the sealing structure can be replaced by a mechanical locking method for the plate, such as a simple bolt locking method or a snap-on method.

[0011] Optionally, the limiting structure includes a sleeve, and the blocking plate is provided with at least one sleeve. An adjustment rod connected to the sleeve is provided within the sleeve, and the lowest end of the adjustment rod can contact the inner wall of the pipe. With this structure, the adjustment rod can be rotated clockwise or counterclockwise. When rotating clockwise, the blocking plate can be locked, while rotating counterclockwise can remove the blocking plate.

[0012] Optionally, two sleeves are provided on the blocking plate and the two sleeves are symmetrically arranged.

[0013] Optionally, the blocking structure includes a first blocking airbag and a second blocking airbag, wherein the first blocking airbag is arranged at the upper end of the placement box, and the second blocking airbag is arranged at the lower end of the placement box. The first blocking airbag can be inflated by injecting air to play a blocking role, and the second blocking airbag can be set by the high-pressure gas inside its own pipeline. After the high-pressure gas enters the second blocking airbag along the connecting pipe, it can be expanded to play a blocking role. It is worth noting that the higher the pressure value inside the pipeline, the greater the expansion degree of the second blocking airbag, thereby avoiding deflation. The second blocking airbag can be provided with a deflation port for easy disassembly.

[0014] Optionally, the outside of the first blocking airbag and the second blocking airbag are both provided with rubber pads that can contact the inner wall of the pipe, and an air injection tube A connected to the first blocking airbag is provided above the placement box, and the air inlet end of the air injection tube A can extend upward to the blocking plate, and an air injection tube B connected to the second blocking airbag is provided below the placement box, and the air inlet end of the air injection tube B is provided with a connecting tube connected to the air injection tube B.

[0015] Optionally, the interiors of the first blocking airbag and the second blocking airbag are both provided with support springs for preventing the first blocking airbag and the second blocking airbag from deforming. The air inlet end of the air injection pipe A is also provided with an air injection valve to prevent air leakage. The cross-sectional shape of the connecting pipe is trumpet-shaped, and the air inlet end diameter of the connecting pipe is larger than the air outlet end diameter of the connecting pipe. The inner and outer walls of the first blocking airbag and the second blocking airbag can be provided with anti-corrosion materials, and the outer wall of the rubber pad can also be provided with anti-corrosion materials. The anti-corrosion material is a polysulfide rubber modified epoxy waterproof anti-corrosion coating. The rubber spring anti-corrosion method uses the chemical properties of metallic zinc in the air to remain stable and to form a dense zinc oxide film in humid air to prevent the spring from corroding. If there are more corrosive substances in the air, the rubber spring should be passivated to increase its protection ability and aesthetic level.

[0016] Optionally, the placement box is externally provided with multiple hydraulic rods A connected to the placement box. The output ends of the hydraulic rods A are connected to movable wheels that contact the inner wall of the pipe. The placement box and the blocking plate are connected via connectors. The hydraulic rods A and movable wheels provide guidance, preventing the placement box from shifting during use. The connectors can be hydraulic rods or hook springs.

[0017] Optionally, the positioning structure includes a positioning ring equipped with multiple hydraulic sleeves B connected to the blocking plate. Multiple adjustment screws are provided on the outside of the positioning ring, and the output ends of the adjustment screws are insertable into the outer wall. The adjustment screws are freely adjustable, and the longest position of the adjustment screws exceeds the inner diameter of the pipe.

[0018] Optionally, the outer wall of the pipe is provided with a mounting ring connected to the pipe and the adjusting screw can be inserted into the mounting ring, the two ends of the hydraulic sleeve B are respectively connected to the positioning ring and the blocking plate through a rotating shaft, the number of the hydraulic sleeve B and the adjusting screw are four, the upper end of the blocking plate is provided with an extension tube corresponding to the air injection tube A and the upper end of the extension tube is provided with a sealing cover connected to the extension tube.

[0019] A method for using a special sealing plate for pipe sealing, the method comprising:

[0020] Step 1: When sealing the pipe channel, you need to use a grinding tool to grind the channel in advance to prevent burrs and other protrusions from appearing on the inner wall of the pipe, and clean it up;

[0021] Step 2: After cleaning, personnel can adjust the pipe type according to the need to be sealed. When the pipe needs to prevent the entry of dust and other impurities, it is only necessary to use a blocking plate and remove the structure under the blocking plate. After the removal is completed, the blocking plate is covered. After the cover is covered, the adjusting rod can be tightened so that the lowest end of the adjusting rod is in close contact with the inner wall of the pipe.

[0022] Step 3: When the diameter of the pipe is larger than the blocking plate, the placement box can be installed under the blocking plate. After installation, it is placed at the mouth of the pipe. Then, an air pump is used to inject air into the air injection valve to expand the first blocking airbag until the rubber pad on the outer wall of the first blocking airbag contacts the inner wall of the pipe.

[0023] Step 4: When there is gas or objects inside the pipe, the blocking plate and the structure under the blocking plate can be assembled, and a mounting ring can be welded at a suitable position on the outer wall of the pipe. After welding is completed, the positioning ring can be installed on the outside of the mounting ring by adjusting the screw. After installation is completed, the blocking plate is placed at the pipe mouth and connected to the positioning ring for installation. When the blocking plate is placed, the movable wheel on the outside of the placement box is moved along the inside of the pipe. After moving to a suitable position, the first blocking airbag can be injected with air through the air injection valve to expand the first blocking airbag, and then the rubber pad is in conflict with the inner wall of the pipe. After that, the adjusting rod can be adjusted until the lowest end of the adjusting rod is in conflict with the inner wall of the pipe.

[0024] In the above solution, some structures can be spot-welded and welded, but the blocking plate and each connecting part are installed in a detachable manner, which is convenient for disassembly and installation.

[0025] Compared with the prior art, the special sealing plate for pipe sealing has the advantages of simple structure operation, quick disassembly and installation, good sealing performance, prolonged service life of the sealing plate, strong applicability and wide pertinence. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A schematic diagram of the structure in front view;

[0028] Figure 3 For the present invention Figure 2 The structural diagram of the middle part;

[0029] Figure 4 It is a structural schematic diagram of the dull plate of the present invention.

[0030] In the figure: 1. Pipe; 2. Stifling plate; 3. Placement box; 4. Sealing structure; 5. Positioning structure; 6. Limiting structure; 7. Sleeve; 8. First sealing airbag; 9. Second sealing airbag; 10. Rubber pad; 11. Air injection pipe A; 12. Air injection valve; 13. Air injection pipe B; 14. Connecting pipe; 15. Support spring; 16. Hydraulic sleeve A; 17. Movable wheel; 18. Connecting piece; 19. Positioning ring; 20. Hydraulic sleeve B; 21. Adjusting screw; 22. Mounting ring; 23. Adjusting rod; 24. Extension pipe; 25. Sealing cover. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0032] See also Figures 1 to 4The present invention provides a technical solution: a special pipe sealing plate, comprising a pipe 1, a pipe 1 is provided with a blocking plate 2 in contact with the mouth of the pipe 1, and the blocking plate 2 is provided with a limiting structure 6 for limiting the blocking plate 2, the limiting structure 6 includes a sleeve 7, at least one sleeve 7 is provided on the blocking plate 2, an adjusting rod 23 connected to the sleeve 7 is provided in the sleeve 7, and the lowest end of the adjusting rod 23 can be in contact with the inner wall of the pipe 1, two sleeves 7 are provided on the blocking plate 2, and the two sleeves 7 are symmetrically arranged, a placement box 3 is provided below the blocking plate 2, which can be slightly displaced up and down along the inner wall of the pipe 1, and a sealing structure 4 for sealing the mouth of the pipe 1 is provided in the placement box 3, and the sealing structure 4 includes a first sealing The blocking air bag 8 and the second blocking air bag 9, the first blocking air bag 8 is arranged at the upper end of the placement box 3, and the second blocking air bag 9 is arranged at the lower end of the placement box 3. The outside of the first blocking air bag 8 and the second blocking air bag 9 are both provided with a rubber pad 10 that can conflict with the inner wall of the pipe 1, and the upper part of the placement box 3 is provided with an injection pipe A11 connected to the first blocking air bag 8 and the air inlet end of the injection pipe A11 can extend upward to the stuffy plate 2, and the lower part of the placement box 3 is provided with an injection pipe B13 connected to the second blocking air bag 9 and the air inlet end of the injection pipe B13 is provided with a connecting pipe 14 connected to the injection pipe B13, and the interior of the first blocking air bag 8 and the second blocking air bag 9 are both provided with a connecting pipe 14 for preventing the first blocking air bag 8 and the second blocking air bag 9 from being blocked. The second blocking airbag 9 generates a support spring 15 for deformation, and the air inlet end of the air injection pipe A11 is also provided with an air injection valve 12 to prevent air leakage. The cross-sectional shape of the connecting pipe 14 is trumpet-shaped, and the air inlet end diameter of the connecting pipe 14 is larger than the air outlet end diameter of the connecting pipe 14. The inner and outer walls of the first blocking airbag 8 and the second blocking airbag 9 can be provided with anti-corrosion materials, and the outer wall of the rubber pad 10 can also be provided with anti-corrosion materials. The outside of the placement box 3 is provided with a plurality of hydraulic sleeves A16 connected to the placement box 3, and the output end of the hydraulic sleeve A16 is connected to a movable wheel 17 in contact with the inner wall of the pipe 1. The placement box 3 is connected to the stuffing plate 2 by a connector 18, and the stuffing plate 2 is also provided with a connecting rod connected to the stuffing plate 2 and for stuffing the stuffing plate 2. A positioning structure 5 for auxiliary positioning is provided, and the positioning structure 5 includes a positioning ring 19. The positioning ring 19 is provided with a plurality of hydraulic sleeves B20 connected to the blocking plate 2. The outside of the positioning ring 19 is provided with a plurality of adjusting screws 21, and the output end of the adjusting screw 21 can be inserted into the outer wall of the pipe 1. The outer wall of the pipe 1 is provided with a mounting ring 22 connected to the pipe 1 and the adjusting screw 21 can be inserted into the mounting ring 22. The two ends of the hydraulic sleeve B20 are respectively connected to the positioning ring 19 and the blocking plate 2 through a rotating shaft. The number of the hydraulic sleeve B20 and the adjusting screw 21 are both four. The upper end of the blocking plate 2 is provided with an extension tube 24 corresponding to the gas injection tube A11, and the upper end of the extension tube 24 is provided with a sealing cover 25 connected to the extension tube 24.

[0033] See also Figures 1 to 4 , the method of using the special sealing plate for pipe sealing includes:

[0034] Step 1: When sealing the pipe channel, you need to use a grinding tool to grind the channel in advance to prevent burrs and other protrusions from appearing on the inner wall of the pipe, and clean it up;

[0035] Step 2: After the cleaning is completed, the personnel can adjust according to the type of pipe that needs to be closed. When the pipe needs to prevent external dust and other impurities from entering, it is only necessary to use the blocking plate 2 and remove the structure under the blocking plate 2. After the removal is completed, the blocking plate 2 is covered. After the cover is covered, the adjusting rod 23 can be tightened so that the lowest end of the adjusting rod 23 is in close contact with the inner wall of the pipe 1;.

[0036] Step 3: When the diameter of the pipe is larger than the blocking plate 2, the placement box 3 can be installed under the blocking plate 2. After installation, it is placed at the mouth of the pipe 1. Then, an air pump is used to inject air into the air injection valve 12 to expand the first blocking airbag 8 until the rubber pad 10 on the outer wall of the first blocking airbag 8 contacts the inner wall of the pipe 1.

[0037] Step 4: When there is gas or object inside the pipeline, the blocking plate 2 and the structure under the blocking plate 2 can be assembled, and the mounting ring 22 can be welded at the appropriate position of the outer wall of the pipeline 1. After welding is completed, the positioning ring 19 can be installed on the outside of the mounting ring 22 by adjusting the screw 21. After the installation is completed, the blocking plate 2 is placed at the mouth of the pipeline 1 and connected and installed with the positioning ring 19. When the blocking plate 2 is placed, the movable wheel 17 on the outside of the placement box 3 is moved along the inside of the pipeline 1. After moving to a suitable position, the first blocking airbag 8 can be injected with air through the air injection valve 12, so that the first blocking airbag 8 expands, and then the rubber pad 10 is in conflict with the inner wall of the pipeline 1. After that, the adjusting rod 23 can be adjusted until the lowest end of the adjusting rod 23 is in conflict with the inner wall of the pipeline 1.

[0038] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in the present invention or in the invention can be understood according to the specific circumstances.

[0039] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Special sealing plate for pipes, characterized by: The invention comprises a pipe (1), wherein a blocking plate (2) in contact with the opening of the pipe (1) is provided on the pipe (1), and a limiting structure (6) for limiting the blocking plate (2) is provided on the blocking plate (2); a placement box (3) for slightly moving up and down along the inner wall of the pipe (1) is provided below the blocking plate (2), and a blocking structure (4) for sealing the opening of the pipe (1) is provided in the placement box (3); and a positioning structure (5) connected to the blocking plate (2) and assisting in positioning the blocking plate (2) is further provided in the blocking plate (2); The limiting structure (6) includes a sleeve (7), at least one sleeve (7) is provided on the blocking plate (2), an adjusting rod (23) connected to the sleeve (7) is provided in the sleeve (7), and the lowest end of the adjusting rod (23) is in contact with the inner wall of the pipe (1); The blocking structure (4) comprises a first blocking airbag (8) and a second blocking airbag (9), wherein the first blocking airbag (8) is arranged at the upper end of the placement box (3), and the second blocking airbag (9) is arranged at the lower end of the placement box (3); The first blocking airbag (8) and the second blocking airbag (9) are both provided with a rubber pad (10) on the outside thereof which contacts the inner wall of the pipe (1); an air injection pipe A (11) connected to the first blocking airbag (8) is provided above the placement box (3); and the air inlet end of the air injection pipe A (11) extends upward to the blocking plate (2); an air injection pipe B (13) connected to the second blocking airbag (9) is provided below the placement box (3); and the air inlet end of the air injection pipe B (13) is provided with a connecting pipe (14) connected to the air injection pipe B (13); The first blocking airbag (8) and the second blocking airbag (9) are both provided with a support spring (15) for preventing the first blocking airbag (8) and the second blocking airbag (9) from being deformed. The air inlet end of the air injection pipe A (11) is also provided with an air injection valve (12) for preventing air leakage. The cross-section of the connecting pipe (14) is trumpet-shaped. The diameter of the air inlet end face of the connecting pipe (14) is larger than the diameter of the air outlet end face of the connecting pipe (14). The inner wall and the outer wall of the first blocking airbag (8) and the second blocking airbag (9) are both provided with anti-corrosion materials, and the outer wall of the rubber pad (10) is also provided with anti-corrosion materials.

2. The pipe sealing plate according to claim 1, characterized in that: Two sleeves (7) are provided on the blocking plate (2), and the two sleeves (7) are symmetrically arranged.

3. The special sealing plate for pipes according to claim 1, characterized in that: The outside of the placement box (3) is provided with a plurality of hydraulic sleeve rods A (16) connected to the placement box (3), and the output end of the hydraulic sleeve rod A (16) is connected to a movable wheel (17) in contact with the inner wall of the pipeline (1). The placement box (3) and the blocking plate (2) are connected via a connecting piece (18).

4. The special sealing plate for pipes according to claim 1, characterized in that: The positioning structure (5) comprises a positioning ring (19), on which a plurality of hydraulic sleeve rods B (20) connected to the blocking plate (2) are provided, and a plurality of adjusting screws (21) are provided on the outside of the positioning ring (19), and the output ends of the adjusting screws (21) are inserted into the outer wall of the pipe (1).

5. The special sealing plate for pipes according to claim 4, characterized in that: The outer wall of the pipe (1) is provided with a mounting ring (22) connected to the pipe (1), and the adjusting screw (21) is inserted into the mounting ring (22). The two ends of the hydraulic sleeve B (20) are respectively connected to the positioning ring (19) and the blocking plate (2) through a rotating shaft. The number of the hydraulic sleeve B (20) and the adjusting screw (21) is four. The upper end of the blocking plate (2) is provided with an extension pipe (24) corresponding to the gas injection pipe A (11), and the upper end of the extension pipe (24) is provided with a sealing cover (25) connected to the extension pipe (24).

6. A method for using the pipe sealing plate according to claim 1, characterized in that: The method includes: Step 1: When sealing the pipe channel, you need to use a grinding tool to grind the channel in advance to prevent burrs and protrusions from appearing on the inner wall of the pipe, and then clean it up; Step 2: After the cleaning is completed, the personnel adjust the pipe according to the type of pipe to be sealed. When the pipe needs to be prevented from entering by external dust and impurities, it is only necessary to use the blocking plate (2) and remove the structure below the blocking plate (2). After the removal is completed, the blocking plate (2) is covered. After the cover is covered, the adjusting rod (23) is tightened so that the lowest end of the adjusting rod (23) is in close contact with the inner wall of the pipe (1). Step 3: When the diameter of the pipe is larger than the blocking plate (2), the placement box (3) is installed below the blocking plate (2). After the installation is completed, it is placed in the mouth of the pipe (1). Then, air is injected into the air injection valve (12) using an air pump to expand the first blocking airbag (8) until the rubber pad (10) on the outer wall of the first blocking airbag (8) contacts the inner wall of the pipe (1). Step 4: When there is an object inside the pipe, the obstructing plate (2) and the structure below the obstructing plate (2) are all assembled, and the mounting ring (22) is welded at a suitable position on the outer wall of the pipe (1). After welding is completed, the positioning ring (19) is installed on the outside of the mounting ring (22) by adjusting the screw (21). After installation is completed, the obstructing plate (2) is placed at the mouth of the pipe (1) and connected to the positioning ring (19). When the obstructing plate (2) is placed, the movable wheel (17) outside the placement box (3) is moved along the inside of the pipe (1). After moving to a suitable position, the first blocking airbag (8) is injected with air through the air injection valve (12), so that the first blocking airbag (8) is expanded, and then the rubber pad (10) is in conflict with the inner wall of the pipe (1). Then, the adjusting rod (23) is adjusted until the lowest end of the adjusting rod (23) is in conflict with the inner wall of the pipe (1).

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