Ball type sealing rapid under-pressure plugging assembly

Abstract

The utility model relates to the technical field of pipeline leakage point plugging, in particular to a ball type sealing rapid under-pressure plugging assembly. The ball type sealing rapid under-pressure plugging assembly comprises a hoop and a sealing cover, the hoop is tightly hooped at a pipeline leakage point, the upper portion of the hoop is provided with a circular-tube-shaped connecting portion communicated with the interior of the hoop, the lower end of the sealing cover is provided with a circular-tube-shaped inserting portion matched with the connecting portion, and the sealing cover is provided with a sealing ring. The connecting part is sleeved with the inserting part in a sealed mode, an annular groove is formed in the joint of the inserting part and the connecting part, a plurality of balls are filled in the annular groove, through holes for the balls to pass through are formed in the positions, corresponding to the annular groove, of the side wall of the inserting part, and plugging pieces are detachably installed in the through holes. The device has the advantages of being simple and reasonable in structural design, capable of achieving rapid under-pressure plugging through the balls and sealing, and very rapid to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline leakage plugging, in particular to a ball-type sealing rapid pressure plugging component. Background Art

[0002] Once a long-distance pipeline is damaged or leaking, maintenance requires dozens of kilometers of natural gas to be vented and nitrogen injected. Only after testing below the explosion limit can maintenance and welding be carried out; if there is fuel oil in the pipeline, it is necessary to plan to stop transmission, which will cause huge losses. Pressure operation of long-distance pipelines is essential. At present, there is no mature method for pressure maintenance. Natural gas is flammable and explosive. Once a leak occurs, it will directly endanger the safety of people's lives and property.

[0003] At present, in the entire industry, the construction of natural gas pressure pipeline isolation and plugging under pressure generally requires operators to wear a full set of fireproof clothing, a respirator, and an explosion-proof wrench to directly loosen the bolts, open the pipeline flange, and insert the flange insert ring and insert plate (blind plate). During the construction process, the operator is in a space filled with a large amount of flammable gas, which poses a great safety hazard. This method is not only time-consuming and labor-intensive, but also poses a great safety hazard.

[0004] Based on this, it is necessary to develop a technology that is simple in design, quick in operation, and can perform pressure sealing in a short time. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a ball-type sealing rapid pressure-sealing component, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A ball-type sealing rapid pressure sealing component comprises a clamp and a sealing cover, wherein the clamp is clamped at the leaking point of the pipeline, the upper part of the clamp is provided with a tubular connecting part connected to the interior thereof, the lower end of the sealing cover is provided with a tubular plug-in part adapted to the connecting part, the plug-in part is sealingly sleeved outside the connecting part, the connecting part and the connecting part are jointly provided with an annular groove at the connection point, a plurality of balls are loaded in the annular groove, a through hole for the balls to pass through is provided at a position of the side wall of the plug-in part corresponding to the annular groove, and a detachable sealing member is installed in the through hole.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the sealing cover is a cylindrical cover body.

[0010] Furthermore, a discharge port is provided at the upper end of the sealing cover, and a valve and a pressure gauge connected to the valve are installed at the discharge port.

[0011] Furthermore, an annular sealing member in contact with the pipeline surface is provided on the inner wall of the connecting portion.

[0012] Furthermore, the annular seal is a rubber ring, and a sealing pressure plate is coaxially provided on the inner wall of the connecting portion. The rubber ring is installed below the sealing pressure plate and is in compression contact with the sealing pressure plate and the pipeline surface. A sealing ejector pin is installed on the sealing pressure plate to abut against the rubber ring.

[0013] Furthermore, the through hole is a screw hole, and the blocking member is a set screw matched with the screw hole.

[0014] Furthermore, the inner wall of the above-mentioned connecting part is provided with a first groove with a semicircular cross-section, and the outer wall of the above-mentioned connecting part is provided with a second groove with a semicircular cross-section, and the above-mentioned first groove and the second groove together constitute the above-mentioned annular groove.

[0015] Furthermore, a sealing ring is coaxially nested on the outer wall of the connecting portion and is in compression contact with the inner wall of the connecting portion.

[0016] Furthermore, the sealing ring is provided in plurality.

[0017] Furthermore, a first step groove is recessed on the outer wall of the connecting part, and a second step groove matched with the first step groove is disposed on the inner wall of the plug-in part. The first step groove and the second step groove are embedded, and the outer surfaces of the connecting part and the plug-in part are flush.

[0018] The utility model has the beneficial effects of simple and reasonable structural design, can utilize balls and seals to realize rapid pressure sealing, and is very quick to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the ball-type seal rapid pressure sealing assembly of the utility model;

[0020] Figure 2 It is a structural cross-sectional view of the ball-type seal rapid pressure sealing component of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Clamp; 2. Sealing cover; 3. Ball; 4. Sealing piece; 5. Annular seal; 6. Sealing ring; 11. Connecting part; 21. Connecting part; 22. Valve; 23. Pressure gauge; 111. Sealing pressure plate; 112. Sealing ejector pin. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] Example: Figure 1 and 2 As shown, the ball-type sealing rapid pressure sealing assembly of this embodiment includes a clamp 1 and a sealing cover 2. The clamp 1 is tightened at the leak point of the pipeline. The upper part of the clamp 1 is provided with a tubular connecting part 11 connected to its interior, and the lower end of the sealing cover 2 is provided with a tubular plug-in part 21 adapted to the connecting part 11. The plug-in part 21 is sealingly sleeved outside the connecting part 11, and the connecting part 21 and the connecting part 11 are connected at the connection point. A ring groove is commonly provided, and a plurality of balls 3 are filled in the ring groove. A through hole for the balls 3 to pass through is provided at the position of the side wall of the plug-in part 21 corresponding to the annular groove, and a plugging member 4 is detachably installed in the through hole.

[0025] The blocking process is as follows:

[0026] First, tighten the clamp 1 to the pipeline plugging point, and then insert the connection part 11 of the sealing cover 2 on the outside of the plug-in part 21. After the plug-in is in place, an annular groove is formed between the outer wall of the connection part 11 and the inner wall of the plug-in part 21. Since the through hole of the side wall of the plug-in part 21 is in a connected position relationship with the annular groove, the balls 3 are loaded into the annular groove from the through hole until the annular groove is filled with the balls 3. After that, the plugging part 4 is installed in the through hole and tightened to prevent the balls 3 from falling from the through hole. Since the balls 3 are embedded in the annular groove, the pressure in the sealing cover 2 increases, and the plug-in part 21 and the connection part 11 will not fall off and separate. At the same time, the sealing between the connection part 11 and the plug-in part 21 is matched, so that the sealing inside the sealing cover 2 is better. On the whole, the structural design is simple and reasonable, and the balls and seals can be used to achieve rapid pressure sealing, and the operation is very fast.

[0027] It should be noted that when disassembly is required, the blocking member 4 is removed, and then the ball 3 is taken out from the through hole. During the removal process, the sealing cover 2 can be relatively rotated so that the plug part 21 rotates relative to the connecting part 11, so that the ball 3 can be taken out from the through hole. After the ball 3 is taken out, there is no positioning between the plug part 21 and the connecting part 11, and the sealing cover 2 can be pulled off by applying a certain force.

[0028] In this embodiment, the clamp 1 can be a conventional annular clamp on the market, specifically including two plates with a semicircular cross-section. The two plates are tightly fitted to the pipeline surface from both sides of the pipeline. Connecting plates are respectively provided at both ends of the two plates. The connecting plates at both ends of the two plates are connected and fixed by bolts passing through the two plates, so that the clamp 1 can be tightly fixed to the pipeline surface. At the same time, a rubber pad can be provided on the inner surface of the plate to improve the degree of tightness with the pipeline surface and achieve a certain sealing and leakage prevention purpose.

[0029] As a preferred embodiment, the sealing cover 2 is a cylindrical cover body.

[0030] In the above embodiment, the sealing cover 2 adopts a cylindrical structure design, and its overall size is consistent and the processing is simple.

[0031] As a preferred embodiment, a discharge port is provided at the upper end of the sealing cover 2 , and a valve 22 and a pressure gauge 23 connected to the valve 22 are installed at the discharge port.

[0032] In the above embodiment, the design of the discharge port is very clever and reasonable. The pressure in the sealing cover 2 can be monitored by installing a valve 22 and a pressure gauge 23 connected to the valve 22. In addition, during the installation process, if it is found that the leakage of the medium at the leaking point on the pipeline is large, the pressure gauge 23 can be installed at the discharge port of the sealing cover 2 without installing it first, and only the valve 22 (which can be a ball valve, etc.) can be installed. By opening the valve 22, the discharge port is unblocked, and then the sealing cover 2 is connected and fixed to the connecting part 11. After the ball 3 is filled in the annular groove, the valve 22 at the discharge port can be operated to close. Then the pressure gauge 23 is installed to monitor the pressure value in the sealing cover 2.

[0033] In this embodiment, the inner wall of the connecting portion 11 is provided with an annular seal 5 in contact with the pipeline surface. The annular seal 5 surrounds the leak point of the pipeline to prevent leakage from the connection between the clamp 1 and the pipeline after leakage at the leak point.

[0034] As a preferred embodiment, the annular seal 5 is a rubber ring, and a sealing pressure plate 111 is coaxially provided on the inner wall of the connecting portion 11. The rubber ring is installed below the sealing pressure plate 111 and is in compression contact with the sealing pressure plate 111 and the pipeline surface. A sealing pin 112 is installed on the sealing pressure plate 111 to abut against the rubber ring.

[0035] In the above embodiment, the rubber ring is installed between the sealing pressure plate 111 and the pipeline surface by extrusion installation, so as to form a better seal around the pipeline leakage point.

[0036] In this embodiment, the sealing pressure plate 111 is fixed to the inner wall of the connecting portion 11 by welding.

[0037] As a preferred embodiment, the through hole is a screw hole, and the blocking member 4 is a set screw matched with the screw hole.

[0038] In the above embodiment, the through hole is designed as a screw hole, and the blocking member 4 adopts a set screw adapted to the screw hole. After the two are assembled, they are relatively stable and have good sealing. At the same time, the disassembly is relatively convenient and quick.

[0039] In this embodiment, two through holes are generally designed and distributed on two opposite sides of the outer wall of the plug-in portion 21 .

[0040] In this embodiment, the inner wall of the above-mentioned connecting part 21 is provided with a first groove with a semicircular cross-section, and the outer wall of the above-mentioned connecting part 11 is provided with a second groove with a semicircular cross-section. The above-mentioned first groove and the second groove together constitute the above-mentioned annular groove.

[0041] As a preferred embodiment, a sealing ring 6 is coaxially embedded in the outer wall of the connecting portion 11 and is in compression contact with the inner wall of the connecting portion 21 .

[0042] In the above embodiment, the outer wall of the connecting portion 11 forms an extrusion seal with the inner wall of the plug-in portion 21 through the nested sealing ring 6, and the sealing performance is better.

[0043] In this embodiment, a plurality of the sealing rings 6 are provided and are distributed at intervals along the axial direction of the connecting portion 11 .

[0044] As a preferred embodiment, the outer wall of the connecting part 11 is recessed with a first step groove, and the inner wall of the connecting part 21 is recessed with a second step groove matched with the first step groove, the first step groove and the second step groove are embedded, and the outer surfaces of the connecting part 11 and the connecting part 21 are flush.

[0045] In the above embodiment, the design of the first step groove and the second step groove enables the connection part 11 and the plug-in part 21 to be assembled, so as to improve the sealing performance by matching the first step groove and the second step groove, and at the same time ensure that the outer surface is flat and has no bumps.

[0046] In this embodiment, a sealing ring 6 is embedded in the surface of the first step groove, and a first groove and a second groove are provided on groove walls where the first step groove and the second step groove are close to each other.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A ball-type sealing rapid pressure plugging assembly, characterized in that: The invention comprises a clamp (1) and a sealing cover (2), wherein the clamp (1) is clamped at the leaking point of the pipeline, the upper part of the clamp (1) is provided with a tubular connecting part (11) communicating with the interior thereof, the lower end of the sealing cover (2) is provided with a tubular plug-in part (21) adapted to the connecting part (11), the plug-in part (21) is sealingly sleeved outside the connecting part (11), the connecting part (21) and the connecting part (11) are connected at a joint with an annular groove, a plurality of balls (3) are filled in the annular groove, a through hole for the balls (3) to pass through is provided at a position of the side wall of the plug-in part (21) corresponding to the annular groove, a plugging member (4) is detachably installed in the through hole.

2. A ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: The sealing cover (2) is a cylindrical cover body.

3. The ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: The upper end of the sealing cover (2) is provided with a discharge port, and the discharge port is equipped with a valve (22) and a pressure gauge (23) connected to the valve (22).

4. The ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: The inner wall of the connecting portion (11) is provided with an annular sealing member (5) in contact with the pipeline surface.

5. A ball-type seal rapid pressure plugging assembly according to claim 4, characterized in that: The annular seal (5) is a rubber ring. A sealing pressure plate (111) is coaxially arranged on the inner wall of the connecting portion (11). The rubber ring is installed below the sealing pressure plate (111) and is in compression contact with the sealing pressure plate (111) and the pipeline surface. A sealing ejector pin (112) is installed on the sealing pressure plate (111) and abuts against the rubber ring.

6. The ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: The through hole is a screw hole, and the blocking member (4) is a set screw adapted to the screw hole.

7. The ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: The inner wall of the plug-in portion (21) is provided with a first groove with a semicircular cross section, and the outer wall of the connecting portion (11) is provided with a second groove with a semicircular cross section, and the first groove and the second groove together constitute the annular groove.

8. The ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: A sealing ring (6) is coaxially nested on the outer wall of the connecting portion (11) and is in compression contact with the inner wall of the connecting portion (21).

9. A ball-type seal rapid pressure plugging assembly according to claim 8, characterized in that: The sealing ring (6) is provided in plurality.

10. The ball-type seal rapid pressure plugging assembly according to claim 1, characterized in that: The outer wall of the connecting portion (11) is recessed with a first step groove, and the inner wall of the plug-in portion (21) is recessed with a second step groove adapted to the first step groove. The first step groove and the second step groove are embedded, and the outer surfaces of the connecting portion (11) and the plug-in portion (21) are flush.

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