Crossed hoop type pipeline slope electrified plugging device and method

Abstract

The present application belongs to the technical field of power system equipment maintenance, and particularly relates to a cross-hoop type pipeline inclined surface live leak-stopping device and method. The present application provides a cross-hoop type pipeline inclined surface live leak-stopping device, which comprises an auxiliary hoop steel ring and a main hoop steel ring; the auxiliary hoop steel ring and the main hoop steel ring are connected through a connecting assembly; the auxiliary hoop steel ring is provided with a sealing gasket; the auxiliary hoop steel ring is provided with a second bolt; the main hoop steel ring is provided with a first bolt; the auxiliary hoop steel ring and the main hoop steel ring are provided with clamp holes matched with the second bolt and the first bolt respectively. The present application is suitable for rapid sealing of various inclined surface gas leakage points of GIS pipelines, and can select hoop rings of corresponding sizes according to different working conditions, thereby improving the applicability of the leak-stopping device.

Description

Technical Field

[0001] This invention belongs to the field of power system equipment maintenance technology, and specifically relates to a cross-clamp type pipe inclined surface live leak sealing device and method. Background Technology

[0002] Gas-insulated switchgear (GIS) has advantages such as compact structure, high reliability, and good safety, and has been widely used and promoted in power systems. SF6 gas has good electrical insulation properties and excellent arc-extinguishing properties, and is therefore widely used as the internal insulating medium in GIS equipment of various voltage levels. However, due to factors such as operating time and weather, SF6 gas leakage accidents often occur during the operation of GIS equipment, causing a decrease in the insulation performance of the equipment and seriously threatening the safety of GIS equipment.

[0003] Currently, common leak sealing methods include welding, adhesive injection using clamps, and adhesive bonding. Welding requires the inflation equipment to be powered off and depressurized; adhesive injection using clamps is complex and requires custom-made molds; adhesive bonding involves directly filling the leak with adhesive, but the pressure inside the equipment (sulfur hexafluoride) prevents the adhesive from curing quickly. Other sealing devices are cumbersome to install, have poor versatility, and are not suitable for quickly sealing leaks on slopes.

[0004] A search revealed that patent CN214789781 U discloses a natural gas pipeline leak-sealing device, including a leak-sealing component, a connecting assembly, and a clamp. The leak-sealing component is glued to the leak point in the pipeline, the clamp is fitted onto the pipeline, and the connecting assembly is disposed between the leak-sealing component and the clamp. The leak-sealing component and the connecting assembly are fixed to the pipeline by the clamp. While the above technical solution uses glue to glue the leak-sealing component to the leak point, this application uses a sealing gasket to plug the leak. Furthermore, the above technical solution can only repair leaks in smooth sections of the pipeline, limiting its applicability.

[0005] Patent CN104235552B discloses a clamp-type leak-sealing device for leaks at gas pipeline seat brackets, including a first clamp plate and a second clamp plate. The first clamp plate has a first arc plate and a second arc plate. The curvature of the first arc plate matches the curvature of the gas pipeline. Several tie rods are symmetrically arranged at both ends of the first arc plate. One end of the tie rod is welded to the first arc plate, and the other end is welded to a plate with bolt holes. A plate with bolt holes is symmetrically welded to each end on one side of the first arc plate. The curvature of the second arc plate matches the curvature of the arc plate of the gas pipeline seat bracket. Several bracket rib slots are provided on one side of the second arc plate. The first arc plate and the second arc plate are connected by welding. Polytetrafluoroethylene elastic strip is fully covered and tightly attached to the first arc plate and the second arc plate of the first clamp plate and the second clamp plate. The above technical solutions can only repair leaks on the flat parts of the pipeline. However, in practical applications, the diameters of different parts of some pipelines are inconsistent. When the diameter is too large, there are usually slopes or arcs. The above solutions are difficult to repair leaks on the sloped parts of the pipeline.

[0006] Therefore, how to conveniently and quickly seal gas leak points on the slope of GIS pipelines under energized conditions has become a pressing problem that substation maintenance urgently needs to solve. Summary of the Invention

[0007] To address the above problems, the present invention provides a cross-clamp type pipe inclined surface electrostatic leak sealing device, the leak sealing device comprising an auxiliary clamp steel ring and a main clamp steel ring;

[0008] The auxiliary clamp steel ring is connected to the main clamp steel ring by a connecting assembly. The auxiliary clamp steel ring is provided with a sealing gasket and a second bolt. The main clamp steel ring is provided with a first bolt. The auxiliary clamp steel ring and the main clamp steel ring are provided with clamping holes that mate with the second bolt and the first bolt, respectively.

[0009] Preferably, the auxiliary clamp steel ring, the main clamp steel ring, the first bolt, the second bolt, and the clamp hole are all made of stainless steel.

[0010] Preferably, the connecting component is made of an elastic material.

[0011] Preferably, the sealing gasket is made of an elastic material and is fixed to the auxiliary clamp steel ring.

[0012] Preferably, the inner ring of the auxiliary clamping steel ring and the outer surface of the main clamping steel ring are vertically overlapped by a connecting assembly.

[0013] Preferably, the second bolt is used to adjust the position of the sealing gasket.

[0014] Preferably, the sealing gasket and the second bolt are located on opposite sides of the main clamp steel ring.

[0015] Preferably, the second bolt is located on the same side as the clamping hole provided on the auxiliary clamping steel ring.

[0016] Preferably, the clamp holes are arranged at equal intervals and at an angle, and the parallel distance between adjacent clamp holes is less than the vertical component of the distance between the beginning and end of the clamp holes.

[0017] Preferably, the first bolt and the second bolt are respectively installed on the auxiliary clamp steel ring and the main clamp steel ring by fasteners, and the fasteners are provided with insertion holes.

[0018] This invention also proposes a method for sealing leaks on the inclined surface of a cross-clamp type pipe under live electrical conditions, the method comprising:

[0019] The auxiliary clamp steel ring and the main clamp steel ring are vertically stacked together by connecting components, and the main clamp steel ring is then placed on the pipe.

[0020] Turning the second bolt on the auxiliary clamp steel ring helps adjust the position of the sealing gasket, so that the sealing gasket is directly facing the leak point on the inclined surface of the pipe;

[0021] Tighten the first bolt on the main clamp steel ring to secure the leak-sealing device.

[0022] Preferably, after fixing the leak-sealing device, waterproofing measures are taken for the main clamp steel ring and the auxiliary clamp steel ring.

[0023] Preferably, the waterproofing measure is to wrap waterproof tape around the outer perimeter of the main clamp steel ring and the auxiliary clamp steel ring.

[0024] The present invention has the following beneficial effects:

[0025] This invention involves placing a main clamp steel ring onto the pipeline, rotating the first bolt to tighten the clamp, and then rotating the second bolt to align the sealing gasket with the gas leak point on the pipeline, thus sealing the leak. This device is suitable for repairing gas leaks on inclined surfaces of pipelines without requiring power outages or pressure reductions. It is easy to install and allows for waterproofing after successful leak sealing. It is applicable to the rapid sealing of various inclined gas leak points in GIS pipelines, and allows for the selection of appropriate clamp sizes based on different operating conditions, thereby improving the overall applicability of the leak sealing device.

[0026] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This diagram illustrates a cross-clamp type pipe inclined surface electrostatic leak sealing device according to an embodiment of the present invention.

[0029] Figure 2 A schematic diagram of the connection components in an embodiment of the present invention is shown;

[0030] Figure 3 This diagram shows a schematic of the inclined surface of the pipe in an embodiment of the present invention.

[0031] Figure 4 This diagram illustrates a method for sealing an electrically charged pipe with a cross-clamp type bevel according to an embodiment of the present invention.

[0032] Figure 5 This diagram illustrates an example of how a device seals a leak point in a sloping pipe in an embodiment of the present invention.

[0033] In the diagram: 1. Auxiliary clamp steel ring; 2. Main clamp steel ring; 3. First bolt; 4. Second bolt; 5. Clamp hole; 6. Connecting assembly; 61. Internal threaded hole; 62. Upper channel; 63. Lower channel; 7. Sealing gasket; 8. Pipeline; 9. Gas leak point; 10. Pipeline inclined surface. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that in the description of the invention, pipe 8 is usually a GIS pipe. The GIS horizontal or vertical pipe is based on the actual pipeline route of the substation equipment, and its front and rear pipe diameters are consistent. The sloping surface of the GIS pipe refers to the connection part of pipes with different diameters or different pipes. Here, it is only for the convenience of describing the invention and simplifying the description.

[0036] like Figure 1 As shown, the present invention proposes a cross-clamp type pipe inclined surface electric leakage sealing device, the leakage sealing device including auxiliary clamp steel ring 1 and main clamp steel ring 2;

[0037] The auxiliary clamping steel ring 1 and the main clamping steel ring 2 are connected by a connecting component 6. The connecting component 6 is made of an elastic material and can be a fixed-shape hardware structure, a movable connection, or glued together with metal. In this example, a four-way double-pass structure is preferred. Figure 2 As shown, Figure 2 In the middle, the connecting component 6 is provided with an internal threaded hole 61, an upper channel 62 and a lower channel 63. The upper channel 62 is a bidirectional channel and the lower channel 63 is a four-way through channel. The inner ring of the auxiliary clamp steel ring 1 and the outer surface of the main clamp steel ring 2 are vertically stacked by the connecting component 6. The auxiliary clamp steel ring 1 is provided with a sealing gasket 7, which is made of elastic material and is fixed to the auxiliary clamp steel ring 1. The auxiliary clamp steel ring 1 is provided with a second bolt 4, which is used to adjust the position of the sealing gasket 7. The sealing gasket 7 and the second bolt 4 are respectively located on both sides of the main clamp steel ring 2. The main clamp steel ring 2 is provided with a first bolt 3, which is used to fasten the main clamp steel ring 2 to the horizontal or vertical pipe 8 near the leakage point on the inclined surface of the pipe 8. The auxiliary clamp steel ring 1 and the main clamp steel ring 2 are provided with clamping holes 5 that mate with the second bolt 4 and the first bolt 3, respectively. The second bolt 4 and the clamping holes 5 on the auxiliary clamp steel ring 1 are located on the same side. The clamping holes 5 are equally spaced and inclined, and the parallel distance between adjacent clamping holes 5 is less than the vertical component of the distance between the beginning and end of the clamping holes 5. The first bolt 3 and the second bolt 4 are respectively installed on the auxiliary clamping steel ring 1 and the main clamping steel ring 2 via fasteners. The fasteners have insertion holes. In use, taking the main clamping steel ring 2 as an example, the end of the main clamping steel ring 2 furthest from the first bolt 3 is inserted into the insertion hole of the fastener. At this time, the first bolt 3 engages with the clamping hole 5 on the surface of the main clamping steel ring 2. Rotating the first bolt 3 causes it to "move" along the clamping hole 5, thereby adjusting the tightness of the main clamping steel ring 2. The method for adjusting the tightness of the auxiliary clamping steel ring 1 is similar to that of the main clamping steel ring 2, and will not be elaborated further here.

[0038] The auxiliary clamp steel ring 1, the main clamp steel ring 2, the first bolt 3, the second bolt 4, and the clamp hole 5 are all made of stainless steel. In this embodiment, the width of the auxiliary clamp steel ring 1 and the main clamp steel ring 2 is a standard 12mm, the diameter of the main clamp steel ring 2 is 600mm, and the diameter of the auxiliary clamp steel ring 1 is 40mm.

[0039] Experiments have shown that the device has been in operation for over 13 months, and no air leakage has been observed, demonstrating excellent leak-sealing performance.

[0040] like Figure 3 As shown in the figure, the diameters of the two ends of the fastening pipe 8 are inconsistent, and there is a gas leakage point 9 on the inclined surface 10 of the pipe.

[0041] When in use, the sealing gasket 7 is directly facing the gas leak point 9, and the diameter of the sealing gasket 7 is larger than the diameter of the gas leak point 9 to ensure that the sealing gasket 7 can completely cover the gas leak point 9.

[0042] like Figure 4 As shown, the present invention also proposes a method for sealing leaks on the inclined surface of a cross-clamp type pipe under live electrical conditions, the method comprising:

[0043] The auxiliary clamp steel ring 1 and the main clamp steel ring 2 are vertically stacked together by connecting component 6, and the main clamp steel ring 2 is put on the pipe 8.

[0044] Twist the second bolt 4 on the auxiliary clamp steel ring 1 to adjust the position of the sealing gasket 7 so that the sealing gasket 7 is directly facing the leakage point on the inclined surface of the pipe 8;

[0045] Tighten the first bolt 3 on the main clamp steel ring 2 to secure the leak-sealing device, such as... Figure 5 As shown.

[0046] After fixing the leak-sealing device, waterproofing measures are taken around the main clamp steel ring 2 and the auxiliary clamp steel ring 1. The waterproofing measures are to wrap waterproof tape around the outside of the main clamp steel ring 2 and the auxiliary clamp steel ring 1. By wrapping the waterproof tape, the service life of the device can be extended, the stress of the clamp steel ring on the leak point of the pipe 8 can be increased, and the leak-sealing effect can be enhanced.

[0047] This invention involves fitting the main clamp steel ring 2 onto the pipe 8, rotating the first bolt 3 to tighten the main clamp steel ring 2 around the pipe 8, and then rotating the second bolt 4 to align the sealing gasket 7 with the gas leak point 9 on the pipe 8, thus blocking the gas leak point 9. This device is suitable for repairing gas leaks on the inclined surfaces of the pipe 8 without requiring power outages or pressure reductions. It is easy to install and allows for waterproofing after successful leak sealing. It is applicable to the rapid sealing of various inclined gas leak points 9 on pipe 8, and allows for the selection of appropriate clamp sizes according to different working conditions, thereby improving the overall applicability of the leak sealing device.

[0048] While this specification contains numerous specific implementation details, these should not be construed as limiting the scope of any invention or the scope of the claims, but rather are primarily intended to describe features of specific embodiments of a particular invention. Certain features described in the various embodiments herein may also be implemented in combination in a single embodiment. Conversely, various features described in a single embodiment may also be implemented separately in various embodiments or in any suitable sub-combination. Furthermore, while features may function in certain combinations as described above and even initially claimed in this way, one or more features from a claimed combination may be removed from that combination in some cases, and a claimed combination may refer to a sub-combination or a variation thereof.

[0049] Similarly, although the operations are depicted in a specific order in the accompanying drawings, this should not be construed as requiring these operations to be performed in the specific order shown or sequentially, or requiring all illustrated operations to be performed to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. Furthermore, the separation of various system modules and components in the above embodiments should not be construed as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

[0050] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims may be performed in a different order and still achieve the desired result. Furthermore, the processes depicted in the drawings are not necessarily shown in a specific order or sequence to achieve the desired result. In some implementations, multitasking and parallel processing may be advantageous.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A cross-hold type pipeline bevel live plugging device, characterized in that, The leaking stoppage device comprises an auxiliary hoop steel ring (1) and a main hoop steel ring (2); the inner ring of the auxiliary hoop steel ring (1) and the outer surface of the main hoop steel ring (2) are vertically connected through a connecting assembly (6); The auxiliary hoop steel ring (1) and the main hoop steel ring (2) are connected through the connecting assembly (6), the auxiliary hoop steel ring (1) is provided with a sealing gasket (7), the auxiliary hoop steel ring (1) is provided with a second bolt (4), the second bolt (4) is used for adjusting the position of the sealing gasket (7), the sealing gasket (7) and the second bolt (4) are respectively located on the two sides of the main hoop steel ring (2), the main hoop steel ring (2) is provided with a first bolt (3), the auxiliary hoop steel ring (1) and the main hoop steel ring (2) are provided with clamp holes (5) matched with the second bolt (4) and the first bolt (3) respectively, the clamp holes (5) are arranged at equal intervals and are inclined, and the parallel distance between adjacent clamp holes (5) is less than the vertical component of the distance between the first end and the second end of the clamp hole (5).

2. The cross-hoop type pipeline inclined surface live-line leaking stoppage device according to claim 1, characterized in that The auxiliary hoop steel ring (1), the main hoop steel ring (2), the first bolt (3), the second bolt (4) and the clamp hole (5) are all made of stainless steel.

3. The cross-hoop type pipeline inclined surface live-line leaking stoppage device according to claim 1, characterized in that The connecting assembly (6) is made of elastic material.

4. A cross-hold type pipe miter live plugging device according to claim 1, wherein , The sealing gasket (7) is made of elastic material, and the sealing gasket (7) is fixed on the auxiliary hoop steel ring (1).

5. The cross-hoop type pipeline inclined surface live-line leaking stoppage device according to claim 1, characterized in that The second bolt (4) and the clamp hole (5) provided on the auxiliary hoop steel ring (1) are located on the same side.

6. The cross-hoop type pipeline inclined surface live-line leaking stoppage device according to claim 1, characterized in that The first bolt (3) and the second bolt (4) are respectively installed on the auxiliary hoop steel ring (1) and the main hoop steel ring (2) through fixing members, and the fixing members are provided with insertion holes.

7. A method for plugging a pipeline slope with electricity by using the cross-hold type pipeline slope plugging device according to any one of claims 1-6, characterized in that, The leaking stoppage method comprises the following steps: The auxiliary hoop steel ring (1) and the main hoop steel ring (2) are vertically connected through the connecting assembly (6), and the main hoop steel ring (2) is sleeved on the pipeline (8); The second bolt (4) on the auxiliary hoop steel ring (1) is twisted to adjust the position of the sealing gasket (7), so that the sealing gasket (7) is opposite to the gas leakage point on the pipeline inclined surface (10); The first bolt (3) on the main hoop steel ring (2) is tightened to fix the leaking stoppage device.

8. The cross-hoop type pipeline inclined surface live-line leaking stoppage method according to claim 7, characterized in that After the leaking stoppage device is fixed, waterproof measures are taken around the main hoop steel ring (2) and the auxiliary hoop steel ring (1).

9. The cross-hoop type pipeline inclined surface live-line leaking stoppage method according to claim 8, characterized in that The waterproof measures are to wrap waterproof tape around the main hoop steel ring (2) and the auxiliary hoop steel ring (1).

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