Hydraulic pipeline tail end plugging structure

Abstract

The utility model belongs to a hydraulic pipeline tail end plugging structure in the technical field of hydraulic systems. A pipeline opening (2) is formed in the end of the pipeline body (1), a pipeline flange (3) is arranged on the outer ring of the pipeline body (1), one end of a plug (4) is clamped at the position of the pipeline opening (2), the other end of the plug (4) is attached to a flange blind plate (5), and the flange blind plate (5) is connected with the pipeline flange (3) through a bolt assembly (6). The hydraulic pipeline tail end plugging structure is simple in structure, can be conveniently and rapidly connected with the pipeline opening of the pipeline body, achieves reliable sealing of the pipeline end, avoids the problem of oil injection caused by bolt looseness or sealing damage due to long-time work of a blind flange in the prior art, improves sealing reliability, prolongs sealing time, and improves sealing efficiency. And the spot inspection and maintenance frequency is reduced, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic systems, and more specifically relates to a hydraulic pipeline end blocking structure. Background Art

[0002] In the prior art, blind flanges are usually used to seal the pipe ends and valve table ends of hydraulic equipment systems, and sealing rings are arranged between the flanges. Due to the high pressure, the existing sealing methods have the following defects during use: 1. The fastening bolts of the blind flanges are prone to loosening after long-term work and operation, resulting in oil spraying; 2. The sealing rings between the flanges will be damaged after long-term work, resulting in oil spraying; 3. Generally, the pipe ends are in a relatively hidden location, which is not conducive to maintenance workers to occupy the position, and there are potential safety hazards for personnel in daily maintenance; 4. Every time the blind flange sealing ring is replaced, a large amount of hydraulic oil leaks, resulting in increased costs and environmental pollution.

[0003] There is a technology named "mechanical hydraulic two-stage plugging device" and publication number "CN217177900U" in the prior art, which consists of a plugging plate, a rotating support plate, a cylinder, a disc leather cup, a hydraulic control system, a spherical leather cup and a guide mechanism. One end of the rotating support plate is connected to the plugging plate through a pin shaft, and the other end of the rotating support plate is connected to the cylinder. The cylinder is connected to an external hydraulic control system. The cylinder and the leather cup gland are connected by bolts to press the disc leather cup. The piston of the cylinder and the spherical leather cup gland are connected to press the spherical leather cup. The disc leather cup and the spherical leather cup are respectively located on the outside of the cylinder gland, and the end of the cylinder piston is connected to the guide mechanism. The utility model device is easy to operate for plugging pipelines, has reliable performance, can save the airbag process, save construction time, reduce construction costs, and achieve safe and reliable zero leakage plugging.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a hydraulic pipeline end sealing structure is provided which has a simple structure and can be conveniently and quickly connected to the pipeline opening of the pipeline body to achieve reliable sealing of the pipeline end, and eliminates the problem of oil spraying caused by loose bolts or seal damage caused by long-term operation of the flange blind plate in the prior art, improves the sealing reliability and sealing time, reduces the frequency of inspection and maintenance, and reduces the labor intensity of operators.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0007] The utility model is a hydraulic pipeline end plugging structure, the end of the pipeline body is a pipeline opening, the outer ring of the pipeline body is provided with a pipeline flange, one end of the plug is clamped at the pipeline opening position, the other end of the plug is attached to a flange blind plate, and the flange blind plate and the pipeline flange are connected by a bolt assembly.

[0008] One end of the plug is a protruding spherical structure, and the side of the plug is a cone.

[0009] One side of the flange blind plate is a conical groove portion.

[0010] The end of the pipe body is a pipe bevel portion.

[0011] When the flange blind plate and the pipeline flange are connected by a bolt assembly, a weld is formed between the pipeline bevel portion of the pipeline body end and the plug.

[0012] The weld is arranged along a circumference, and the cross section of the weld is a triangular structure.

[0013] The pipeline flange is provided with a plurality of pipeline flange through holes at intervals around the edge, and the flange blind plate is provided with a plurality of flange blind plate through holes at intervals around the edge.

[0014] The bolt assembly comprises a bolt and a nut.

[0015] When the flange blind plate and the pipeline flange are connected by a bolt assembly, the cone is configured to be a structure that can be clamped in the groove portion of the cone.

[0016] The technical solution of the utility model is adopted, and the working principle and beneficial effects are as follows:

[0017] The hydraulic pipeline end plugging structure described in the utility model no longer uses a sealing ring, and the end of the pipeline body is the pipeline opening, and the pipeline opening is the part that needs to be plugged. A pipeline flange is set on the outer ring of the pipeline body, and the pipeline body and the pipeline flange are fixedly connected, which can be welded. When it is necessary to plug the pipeline opening, one end of the plug is clamped at the pipeline opening position, and the other end of the plug is attached to the flange blind plate. The flange blind plate and the pipeline flange are connected by a bolt assembly. In this way, after tightening the bolt assembly, the bolt assembly applies an external force between the pipeline flange and the blind plate flange, so that the pipeline flange and the blind plate flange tend to approach each other, so that the plug can be reliably clamped, and at the same time, the blind plate flange also fits the end of the pipeline opening, so as to reliably achieve sealing. The plug is a metal material structure, which is not easy to wear and not easy to deform, effectively improving the reliability of the seal, and can be plugged for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of this specification:

[0019] Figure 1This is a structural schematic diagram of the hydraulic pipeline end plugging structure of the utility model when in use;

[0020] Figure 2 It is a schematic cross-sectional structural diagram of a pipeline body of the hydraulic pipeline end plugging structure described in the utility model;

[0021] Figure 3 It is a side sectional structural schematic diagram of the plug of the hydraulic pipeline end plugging structure described in the utility model;

[0022] Figure 4 It is a front structural schematic diagram of the plug of the hydraulic pipeline end plugging structure described in the utility model;

[0023] Figure 5 It is a side cross-sectional structural schematic diagram of a flange blind plate of the hydraulic pipeline end plugging structure described in the utility model;

[0024] The marks in the accompanying drawings are respectively: 1. pipe body; 2. pipe opening; 3. pipe flange; 4. plug; 5. flange blind plate; 6. bolt assembly; 7. spherical structure; 8. cone; 9. cone groove; 10. pipe inclined portion; 11. weld; 12. pipe flange through hole; 13. flange blind plate through hole; 14. bolt; 15. nut. DETAILED DESCRIPTION

[0025] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connection relationships of the components involved, the functions and working principles of the components, etc., by referring to the accompanying drawings:

[0026] As attached Figure 1 -Attached Figure 5As shown, the utility model is a hydraulic pipeline end plugging structure, the end of the pipeline body 1 is a pipeline opening 2, the outer ring of the pipeline body 1 is provided with a pipeline flange 3, one end of the plug 4 is clamped in the position of the pipeline opening 2, the other end of the plug 4 is attached to the flange blind plate 5, and the flange blind plate 5 and the pipeline flange 3 are connected by a bolt assembly 6. The above structure proposes an improved technical solution to address the deficiencies in the prior art. When setting the structure, an improvement is proposed to address the need to seal the pipeline body, and a sealing ring is no longer used, but a plug 4 is used. The end of the pipeline body 1 is a pipeline opening 2, and the pipeline opening 2 is the part that needs to be blocked. The outer ring of the pipeline body 1 is provided with a pipeline flange 3, and the pipeline body 1 and the pipeline flange 3 are fixedly connected, which can be welded. When the pipeline opening 2 needs to be blocked, one end of the plug 4 is clamped at the position of the pipeline opening 2, and the other end of the plug 4 is attached to the flange blind plate 5, and then the flange blind plate 5 and the pipeline flange 3 are connected by the bolt assembly 6. In this way, after tightening the bolt assembly 6, the bolt assembly 6 applies an external force between the pipeline flange 3 and the blind plate flange 5, so that the pipeline flange 3 and the blind plate flange 5 have a tendency to approach each other, and the plug 4 can be reliably clamped, and at the same time, the blind plate flange 5 also fits the end of the pipeline opening 2, thereby improving the sealing reliability. The plug 4 is a metal material structure, which is not easy to wear or deform, effectively improves the reliability of the seal, and can be blocked for a long time. The hydraulic pipeline end blocking structure described in the utility model has a simple structure, can be conveniently and quickly connected to the pipeline opening of the pipeline body, realizes reliable sealing of the pipeline end, eliminates the problem of oil spraying caused by the flange blind plate in the prior art due to loose bolts or seal damage caused by long-term work, improves the sealing reliability and sealing time, reduces the frequency of inspection and maintenance, and reduces the labor intensity of operators.

[0027] One end of the plug 4 is a protruding spherical structure 7, and the side of the plug 4 is a conical body 8. One side of the flange blind plate 5 is a conical body groove 9. The end of the pipe body 1 is a pipe slope portion 10. When the flange blind plate 5 and the pipe flange 3 are connected by the bolt assembly 6, the pipe slope portion 10 at the end of the pipe body 1 and the plug 4 are welded to form a weld 11. The weld 11 is arranged along a circle, and the cross-section of the weld 11 is a triangular structure. The above structure and the setting of the spherical structure make the plug have a tendency to extend into the inside of the pipe opening when sealing the pipe opening, and a triangular notch arranged along a circle is formed between the spherical structure 7 and the pipe slope portion 10. After the bolt assembly connects the pipe flange 3 and the flange blind plate 5, welding is performed at the notch to form a weld 11, which can reliably realize the welding of the plug 4 and ensure the reliability of the sealing. One side of the flange blind plate 5 is a conical groove portion 9, and the conical groove portion 9 is reliably fitted with the conical body 8, and the conical body 8 on the side of the plug 4 cooperates with the conical groove portion 9, so that when the bolt assembly is tightened, the conical groove portion 9 applies external force to the conical body 8 of the plug, thereby improving the reliability of the plug fitting the open end of the pipe, and effectively improving the positioning effect and welding quality of the plug.

[0028] The pipe flange 3 is provided with a plurality of pipe flange through holes 12 at intervals around the edge, and the flange blind plate 5 is provided with a plurality of flange blind plate through holes 13 at intervals around the edge. The bolt assembly 6 includes bolts 14 and nuts 15. In the above structure, the pipe flange 3 and the flange blind plate 5 are fixed by passing the bolts 14 through the flange blind plate through holes 13 and the pipe flange through holes 12, and then screwing the nuts 15 onto the bolts. The flange blind plate through holes 13 and the pipe flange through holes 12 are both provided with a plurality of them, and the number of the flange blind plate through holes 13 and the pipe flange through holes 12 are equal, and the positions correspond one to one. The bolt assembly 6 is also equal to the number of the flange blind plate through holes 13.

[0029] When the flange blind plate 5 and the pipe flange 3 are connected by the bolt assembly 6, the conical body 8 is configured to be able to be clamped in the conical body groove 9. In the above structure, the conical body 8 is clamped in the conical body groove 9, and the plug does not fit the bottom surface of the conical body groove 9, so that the conical body groove 9 can reliably apply force to the plug 4, thereby improving the sealing reliability.

[0030] The hydraulic pipeline end plugging structure described in the utility model proposes an improvement for the pipeline body that needs to be sealed. The end of the pipeline body 1 is a pipeline opening 2, and the pipeline opening 2 is the part that needs to be plugged. A pipeline flange 3 is set on the outer ring of the pipeline body 1, and the pipeline body 1 and the pipeline flange 3 are fixedly connected, which can be welded. When the pipeline opening 2 needs to be plugged, one end of the plug 4 is clamped at the position of the pipeline opening 2, and the other end of the plug 4 is attached to the flange blind plate 5. The flange blind plate 5 and the pipeline flange 3 are connected by a bolt assembly 6. In this way, after tightening the bolt assembly 6, the bolt assembly 6 applies an external force between the pipeline flange 3 and the blind plate flange 5, so that the pipeline flange 3 and the blind plate flange 5 tend to approach each other, so that the plug 4 can be reliably clamped, and at the same time, the blind plate flange 5 also fits the end of the pipeline opening 2, thereby improving the sealing reliability. The plug 4 is a metal material structure, which is not easy to wear or deform, improves the reliability of the seal, and can be plugged for a long time.

[0031] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A hydraulic pipeline end plugging structure, characterized in that: The end of the pipeline body (1) is a pipeline opening (2), the outer ring of the pipeline body (1) is provided with a pipeline flange (3), one end of a plug (4) is clamped at the position of the pipeline opening (2), the other end of the plug (4) is attached to a flange blind plate (5), and the flange blind plate (5) and the pipeline flange (3) are connected by a bolt assembly (6).

2. The hydraulic pipeline end plugging structure according to claim 1 is characterized in that: One end of the plug (4) is a protruding spherical structure (7), and the side of the plug (4) is a cone (8).

3. The hydraulic pipeline end plugging structure according to claim 2 is characterized in that: One side of the flange blind plate (5) is a conical groove portion (9).

4. The hydraulic pipeline end plugging structure according to claim 1 or 2, characterized in that: The end of the pipeline body (1) is a pipeline bevel portion (10).

5. The hydraulic pipeline end plugging structure according to claim 4 is characterized in that: When the flange blind plate (5) and the pipeline flange (3) are connected via a bolt assembly (6), a weld (11) is formed between the pipeline bevel portion (10) at the end of the pipeline body (1) and the plug (4).

6. The hydraulic pipeline end plugging structure according to claim 5, characterized in that: The welding seam (11) is arranged along a circumference, and the cross section of the welding seam (11) is a triangular structure.

7. The hydraulic pipeline end plugging structure according to claim 1 or 2, characterized in that: The pipeline flange (3) is provided with a plurality of pipeline flange through holes (12) at intervals around the edge, and the flange blind plate (5) is provided with a plurality of flange blind plate through holes (13) at intervals around the edge.

8. The hydraulic pipeline end plugging structure according to claim 1 or 2, characterized in that: The bolt assembly (6) comprises a bolt (14) and a nut (15).

9. The hydraulic pipeline end plugging structure according to claim 3, characterized in that: When the flange blind plate (5) and the pipeline flange (3) are connected via a bolt assembly (6), the cone (8) is configured to be a structure capable of being clamped in the cone groove portion (9).

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