Pipeline plane sand hole opening leaking stoppage device

Abstract

The invention discloses a pipeline plane sand hole opening leaking stoppage device, and relates to the technical field of pipeline leaking stoppage, the pipeline plane sand hole opening leaking stoppage device comprises a lower semicircular holding clamping plate, a fixing shaft is fixed on the lower semicircular holding clamping plate, and clamping arc blocks arranged opposite to a power pipeline are installed on the lower semicircular holding clamping plate and an upper semicircular holding clamping plate; radial sliding blocks are slidably installed on the lower semicircular holding clamping plate and the upper semicircular holding clamping plate, an extension plate II corresponding to the extension plate I is installed on the angle locking assembly, and a blocking plate used for blocking a sand hole in the power pipeline is fixed to the radial adjusting assembly. According to the clamping device, the upper semicircular clamping plate and the lower semicircular clamping plate which are arranged are in butt joint and are connected to the power pipeline in a sleeving mode, the multiple clamping arc blocks are driven by means of the clamping abutting-pushing assembly to fix and limit the power pipeline, and meanwhile the upper semicircular clamping plate can slide in the circumferential direction relative to the clamping arc blocks; the plugging plate and the plugging assembly can be stably and rapidly in butt joint with the sand hole, and the sand hole plugging efficiency and accuracy are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline plugging, in particular to a pipeline plane sand hole plugging device. Background Art

[0002] Power pipeline refers to the pipeline system used to transport power media such as steam, compressed air, nitrogen, etc. Power pipeline plays an important role in industrial production, providing power source for various equipment. It usually has high pressure and temperature requirements, so it is necessary to strictly comply with relevant standards and specifications during design, installation and maintenance. During use, power pipelines need to be regularly inspected and maintained to ensure their safe and reliable operation.

[0003] In the actual production process, the power pipeline leaks due to sand holes in the pipe wall due to years of scouring, which seriously affects the normal operation of the power pipeline. If the entire system is shut down to weld the pipeline, it will affect normal production, and it is necessary to use a leak-proof device to seal the pipeline. However, during the use of the existing leak-proof device, the sealing device cannot be stably limited on the pipeline, and the sealing process is prone to displacement and affects the sealing effect. At the same time, the sealing process cannot be flexibly and accurately adjusted according to the location of the leakage, resulting in great restrictions on the efficiency of the sealing operation and the sealing effect. For this reason, a pipeline flat sand hole leak-proof device is provided to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a device for plugging leakage of plane sand holes in pipelines to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for plugging leakage at the flat sand hole of a pipeline comprises a lower semicircular embracing splint, a fixed shaft is fixed on the lower semicircular embracing splint, an upper semicircular embracing splint docked with the lower semicircular embracing splint is rotatably mounted on the fixed shaft, a power pipeline passes between the lower semicircular embracing splint and the upper semicircular embracing splint, guide frames are fixed on the lower semicircular embracing splint and the upper semicircular embracing splint, a transmission arc plate is slidably mounted on the guide frame, a clamping arc block arranged opposite to the power pipeline is mounted on the lower semicircular embracing splint and the upper semicircular embracing splint, a radial slider is slidably mounted on the lower semicircular embracing splint and the upper semicircular embracing splint, and a radial slider is connected to the radial slider for driving the clamping arc block to move toward the power pipeline A clamping and pushing component, the upper semicircular clamping plate and the lower semicircular clamping plate are both installed with a docking plate at one end away from the fixed shaft, and a driving component for driving the transmission arc plate to slide is installed on the docking plate, an extension plate I is fixed on the upper semicircular clamping plate, an angle locking component is connected between the upper semicircular clamping plate and the lower semicircular clamping plate, an extension plate II corresponding to the extension plate I is installed on the angle locking component, a radial adjustment component is installed on the upper semicircular clamping plate, a sealing plate for sealing the sand eye holes on the power pipeline is fixed on the radial adjustment component, and a sealing component extending to the inside of the sand eye holes is installed on the radial adjustment component.

[0007] As an improved solution of the present invention: the clamping and pushing assembly includes a locking wedge fixed on the transmission arc plate, the wedge surface of the locking wedge abuts against the radial slider, an extension block is fixed to the side wall of the radial slider, and a radial spring is fixed between the extension block and the upper semicircular clamping plate.

[0008] As an improved solution of the present invention: a guide slider is fixed to one end of the radial slider away from the locking wedge block, the guide slider is slidably embedded in the clamping arc block, and a reset spring is fixedly connected between the clamping arc block and the guide slider.

[0009] As an improved solution of the present invention: the driving assembly includes a push wedge block slidably mounted on the docking plate, the push wedge block abuts against the end of the transmission arc plate, and a sliding assembly is installed on the docking plate for driving the push wedge block to slide relative to the docking plate.

[0010] As an improved solution of the present invention: the sliding assembly includes a vertical plate fixed on the docking plate, a threaded rod threadedly connected to the push wedge is rotatably mounted on the vertical plate, a gear I and a gear II are coaxially fixed on the two threaded rods, the gear I and the gear II are meshingly connected, and a hand crank II is fixed at the end of the threaded rod.

[0011] As an improved solution of the present invention: the angle locking assembly includes a connecting strip plate slidably mounted on the upper semicircular clamping plate, the extension plate II is fixed on the connecting strip plate, a push spring is fixed between the connecting strip plate and the upper semicircular clamping plate, a snap-fitting wedge tooth is fixed on the connecting strip plate, and a plurality of non-return wedge teeth that are snap-fitted with the snap-fitting wedge teeth are fixed on the lower semicircular clamping plate, and the non-return wedge teeth are distributed around the axis of the fixed shaft.

[0012] As an improved solution of the present invention: the radial adjustment assembly includes a lifting frame radially slidably mounted on the upper semicircular clamping plate, a threaded column is threadedly connected to the lifting frame, one end of the threaded column is rotatably mounted on the upper semicircular clamping plate, and a hand crank I is fixed to the other end of the threaded column, and the blocking plate is fixed on the side of the lifting frame facing the power pipeline.

[0013] As an improved solution of the present invention: the sealing assembly also includes a sliding column which is sealingly and slidingly connected to the sealing plate, the sliding column slides through the lifting frame, a top plate is fixed to one end of the sliding column, a spring ring is fixed between the top plate and the lifting frame, a sealing cone block opposite to the sand eye hole is fixed to the other end of the sliding column, and a locking assembly for locking the sliding column in position is installed on the sealing cone block.

[0014] As an improved solution of the present invention: the locking assembly includes a non-return trapezoidal block slidably mounted on the side wall of the extension column, a connecting spring is fixed between the non-return trapezoidal block and the extension column, and a slope surface opposite to the power pipeline is provided at the bottom of the non-return trapezoidal block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention connects and sleeves the upper semicircular clamping plate and the lower semicircular clamping plate on the power pipeline, and uses the clamping and pushing components to drive multiple clamping arc blocks to fix and limit the power pipeline. At the same time, the upper semicircular clamping plate can slide circumferentially relative to the clamping arc blocks, so that the sealing plate and the sealing component can be stably and quickly connected with the sand eye hole, which greatly improves the efficiency and accuracy of sand eye hole sealing.

[0017] 2. The sealing cone block provided in the present invention first extends into the sand eye hole, and the position of the sealing cone block is locked by means of a locking assembly to ensure that the sealing cone block tightly fills the sand eye hole, and then the sealing plate moves down and fits against the outer wall of the power pipeline for secondary sealing, thereby significantly improving the plugging effect of the sand eye hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 The enlarged schematic diagram of the middle A part;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram from a certain perspective;

[0021] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the connection of the connecting strip, the extension plate II, the clamping wedge teeth and the push spring in the present invention;

[0023] Figure 6 It is a schematic diagram of the connection of the transmission arc plate, the locking wedge, the radial slider and the clamping arc block in the present invention;

[0024] Figure 7 It is a schematic diagram of the connection of the radial slider, the guide slider, the return spring and the clamping arc block in the present invention;

[0025] Figure 8 It is a schematic diagram of the connection between the power pipeline, the radial adjustment component and the plugging component in the present invention;

[0026] Fig. 9 It is a schematic diagram of the connection between the sliding column, the sealing cone block and the locking assembly in the present invention.

[0027] In the figure: 1-power pipeline, 2-threaded rod, 3-upper semicircular clamping plate, 4-lower semicircular clamping plate, 5-butt plate, 6-vertical plate, 7-transmission arc plate, 8-clamping arc block, 9-blocking plate, 10-hand crank I, 11-guide frame, 12-lifting frame, 13-threaded column, 14-radial slider, 15-gear I, 16-extension plate I, 17-extension plate II, 18-non-return wedge tooth, 19-connecting strip plate, 20-clamping Wedge teeth, 21-fixed shaft, 22-push spring, 23-locking wedge, 24-radial spring, 25-extension block, 26-guide slider, 27-reset spring, 28-top plate, 29-spring ring, 30-sliding column, 31-check trapezoidal block, 32-sealing cone block, 33-extension column, 34-connecting spring, 35-sand eyelet, 36-hand crank II, 37-gear II, 38-push wedge, 39-slope. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments:

[0029] Example 1

[0030] Please see attached Figure 1 -Attached Fig. 9A device for plugging leakage at the flat sand hole of a pipeline comprises a lower semicircular clamping plate 4, a fixed shaft 21 is fixed on the lower semicircular clamping plate 4, an upper semicircular clamping plate 3 docking with the lower semicircular clamping plate 4 is rotatably installed on the fixed shaft 21, a power pipeline 1 passes between the lower semicircular clamping plate 4 and the upper semicircular clamping plate 3, a guide frame 11 is fixed on the lower semicircular clamping plate 4 and the upper semicircular clamping plate 3, a transmission arc plate 7 is slidably installed on the guide frame 11, a clamping arc block 8 arranged opposite to the power pipeline 1 is installed on the lower semicircular clamping plate 4 and the upper semicircular clamping plate 3, a radial slider 14 is slidably installed on the lower semicircular clamping plate 4 and the upper semicircular clamping plate 3, and a radial slider 14 is connected to the radial slider 14 for driving the clamping arc block 8 to move toward A clamping and pushing assembly that moves toward the power pipeline 1, an upper semicircular clamping plate 3 and a lower semicircular clamping plate 4 are both installed with a docking plate 5 at one end away from the fixed shaft 21, and a driving assembly for driving the transmission arc plate 7 to slide is installed on the docking plate 5, an extension plate I16 is fixed on the upper semicircular clamping plate 3, an angle locking assembly is connected between the upper semicircular clamping plate 3 and the lower semicircular clamping plate 4, an extension plate II17 corresponding to the extension plate I16 is installed on the angle locking assembly, a radial adjustment assembly is installed on the upper semicircular clamping plate 3, a sealing plate 9 for sealing the sand eye hole 35 on the power pipeline 1 is fixed on the radial adjustment assembly, and a sealing assembly extending to the inside of the sand eye hole 35 is installed on the radial adjustment assembly.

[0031] When the sand eye hole 35 on the power pipeline 1 is blocked by the present device, the upper semicircular embracing plate 3 and the lower semicircular embracing plate 4 are put on the power pipeline 1 to be blocked, and then the upper semicircular embracing plate 3 and the lower semicircular embracing plate 4 are surrounded and fixed by means of the angle locking component, so that the upper semicircular embracing plate 3 and the lower semicircular embracing plate 4 surround the power pipeline 1.

[0032] Specifically, the angle locking assembly includes a connecting strip 19 slidably mounted on the upper semicircular clamping plate 3, an extension plate II17 is fixed on the connecting strip 19, a push spring 22 is fixed between the connecting strip 19 and the upper semicircular clamping plate 3, a snap-fitting wedge tooth 20 is fixed on the connecting strip 19, and a plurality of non-return wedge teeth 18 that are snap-fitted with the snap-fitting wedge teeth 20 are fixed on the lower semicircular clamping plate 4, and the non-return wedge teeth 18 are distributed around the axis of the fixed shaft 21 as the center.

[0033] During the rotation of the upper semicircular clamping plate 3 relative to the fixed shaft 21, the clamping wedge teeth 20 rotate with the upper semicircular clamping plate 3 and slide relative to the non-return wedge teeth 18, and finally the clamping wedge teeth 20 are clamped between the two non-return wedge teeth 18 under the elastic push action of the push spring 22, so as to achieve the angle locking of the upper semicircular clamping plate 3 and the lower semicircular clamping plate 4 after encirclement, and ensure the stability of the structure to improve the subsequent blocking effect of the sand eye hole 35. By adjusting the extension plate II17 to move toward the extension plate I16, the connecting strip plate 19 can drive the clamping wedge teeth 20 to move out from between the non-return wedge teeth 18, and at this time, the upper semicircular clamping plate 3 and the lower semicircular clamping plate 4 can be unlocked.

[0034] The clamping and pushing assembly of the device includes a locking wedge 23 fixed on the transmission arc plate 7, the wedge surface of the locking wedge 23 abuts against the radial slider 14, an extension block 25 is fixed to the side wall of the radial slider 14, and a radial spring 24 is fixed between the extension block 25 and the upper semicircular clamping plate 3. A guide slider 26 is fixed to the end of the radial slider 14 away from the locking wedge 23, and the guide slider 26 is slidably embedded in the clamping arc block 8, and a return spring 27 is fixedly connected between the clamping arc block 8 and the guide slider 26.

[0035] With the help of the set driving component, the transmission arc plate 7 can be driven to slide under the guidance of the guide frame 11, so that the transmission arc plate 7 drives the locking wedge block 23 to push the radial slider 14, and the radial slider 14 drives the clamping arc block 8 to move toward the power pipeline 1 through the guide slider 26, thereby realizing that multiple clamping arc blocks 8 clamp the power pipeline 1 to a limited position, which greatly improves the sealing stability and sealing operation efficiency of the sealing component for the sand eye hole 35.

[0036] The guide slider 26 is able to slide relative to the clamping arc block 8, so that after the clamping arc block 8 is locked on the power pipeline 1, the upper semicircular clamping plate 3 and the lower semicircular clamping plate 4 are adjusted to rotate relative to the power pipeline 1, so that the sealing component can be accurately adjusted to a position relative to the sand eye hole 35, thereby greatly improving the sealing accuracy of the sand eye hole 35.

[0037] In addition, the driving component of the device includes a push wedge 38 slidably mounted on the docking plate 5, the push wedge 38 abuts against the end of the transmission arc plate 7, and a sliding component for driving the push wedge 38 to slide relative to the docking plate 5 is installed on the docking plate 5, wherein the sliding component includes a vertical plate 6 fixed on the docking plate 5, and a threaded rod 2 threadedly connected to the push wedge 38 is rotatably mounted on the vertical plate 6, and a gear I15 and a gear II37 are coaxially fixed on the two threaded rods 2, respectively, and the gear I15 and the gear II37 are meshingly connected, and a hand crank II36 is fixed to the end of the threaded rod 2.

[0038] When the upper semicircular clamping plate 3 and the lower semicircular clamping plate 4 are closed, the two docking plates 5 are docked, and the gears I15 and II37 on the two threaded rods 2 are meshed. At this time, by shaking the hand crank II36 to drive one of the threaded rods 2 to rotate, the other threaded rod 2 can be rotated, thereby realizing the two pushing wedge blocks 38 to move toward the transmission arc plate 7 at the same time, and finally realizing the sliding of the transmission arc plate 7 after being pushed, thereby realizing driving multiple clamping arc blocks 8 to move synchronously and stably clamping the power pipeline 1.

[0039] Example 2

[0040] Please see attached Figure 1 -Attached Fig. 9 On the basis of Example 1, in addition, the radial adjustment component of the device includes a lifting frame 12 radially slidably mounted on the upper semicircular clamping plate 3, a threaded column 13 is threadedly connected to the lifting frame 12, one end of the threaded column 13 is rotatably mounted on the upper semicircular clamping plate 3, and a hand crank I10 is fixed to the other end of the threaded column 13, and the blocking plate 9 is fixed on the side of the lifting frame 12 facing the power pipeline 1.

[0041] The threaded column 13 can be driven to rotate by shaking. At this time, the threaded column 13 drives the lifting frame 12 to slide relative to the upper semicircular clamping plate 3, thereby driving the sealing component to extend into the sand eye hole 35 for sealing operation. Specifically, the sealing component includes a sliding column 30 that is sealingly and slidingly connected to the sealing plate 9. The sliding column 30 slides through the lifting frame 12. A top plate 28 is fixed to one end of the sliding column 30. A spring ring 29 is fixed between the top plate 28 and the lifting frame 12. A sealing cone block 32 opposite to the sand eye hole 35 is fixed to the other end of the sliding column 30. A locking assembly for locking the sliding column 30 in position is installed on the sealing cone block 32, wherein the locking assembly includes a non-return trapezoidal block 31 slidably installed on the side wall of the extension column 33, a connecting spring 34 is fixed between the non-return trapezoidal block 31 and the extension column 33, and a slope 39 opposite to the power pipeline 1 is provided at the bottom of the non-return trapezoidal block 31.

[0042] Through the above arrangement, in the process of the lifting frame 12 moving toward the sand eye hole 35, the top plate 28, the spring coil 29, the sliding column 30 and the sealing cone block 32 move toward the sand eye hole 35, so that the sealing cone block 32 enters the sand eye hole 35 for sealing, and then the lifting frame 12 continues to move, and the spring coil 29 deforms and elongates, so that the thrust of the sealing cone block 32 on the sand eye hole 35 of the power pipeline 1 is continuously increased, further ensuring the sealing effect of the sand eye hole 35. In this process, the sealing plate 9 moves and abuts against the outer wall of the power pipeline 1, thereby achieving a secondary sealing effect on the power pipeline 1, and the plugging effect of the power pipeline 1 is significantly improved.

[0043] In the process of extending the sealing cone block 32 and the extension column 33 into the power pipeline 1, the slope 39 of the non-return trapezoidal block 31 pushes against the power pipeline 1 and then slides toward the extension column 33. When the non-return trapezoidal block 31 passes over the side wall of the power pipeline 1, under the elastic reset action of the connecting spring 34, the non-return trapezoidal block 31 is reset and abuts against the inner wall of the power pipeline 1, thereby locking the sealing cone block 32 on the power pipeline 1 and ensuring effective sealing and plugging of the sand eye holes 35.

[0044] In summary, the present invention docks and sleeves the upper semicircular clamping plate 3 and the lower semicircular clamping plate 4 on the power pipeline 1, and drives a plurality of clamping arc blocks 8 to fix and limit the power pipeline 1 by means of the clamping and pushing assembly. At the same time, the upper semicircular clamping plate 3 can slide circumferentially relative to the clamping arc blocks 8, so that the sealing plate 9 and the sealing assembly can be docked with the sand eye hole 35 stably and quickly, greatly improving the sealing efficiency and accuracy of the sand eye hole 35. In the present invention, the sealing cone block 32 is first extended into the sand eye hole 35, and the position of the sealing cone block 32 is locked by means of the locking assembly to ensure that the sealing cone block 32 tightly fills the sand eye hole 35, and then the sealing plate 9 moves down and fits the outer wall of the power pipeline 1 for secondary sealing, and the plugging effect of the sand eye hole 35 is significantly improved.

[0045] It should be noted that although this specification is described according to the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above embodiments only express the preferred implementation methods of the technical solution, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention of the technical solution. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations, improvements and substitutions can be made, which all belong to the protection scope of the present technical solution. The protection scope of the invention of the present technical solution shall be based on the attached claims.

Claims

1. A device for plugging leakage of a flat sand hole in a pipeline, comprising a lower semicircular clamping plate (4), a fixed shaft (21) being fixed on the lower semicircular clamping plate (4), an upper semicircular clamping plate (3) being rotatably mounted on the fixed shaft (21) and docking with the lower semicircular clamping plate (4), a power pipeline (1) passing between the lower semicircular clamping plate (4) and the upper semicircular clamping plate (3), characterized in that: A guide frame (11) is fixed on the lower semicircular clamping plate (4) and the upper semicircular clamping plate (3), and a transmission arc plate (7) is slidably mounted on the guide frame (11). A clamping arc block (8) arranged opposite to the power pipeline (1) is mounted on the lower semicircular clamping plate (4) and the upper semicircular clamping plate (3). A radial slider (14) is slidably mounted on the lower semicircular clamping plate (4) and the upper semicircular clamping plate (3), and a clamping and pushing assembly for driving the clamping arc block (8) to move toward the power pipeline (1) is connected to the radial slider (14). The upper semicircular clamping plate (3) and the lower semicircular clamping plate (4) are both mounted at one end away from the fixed shaft (21). A docking plate (5), the docking plate (5) is provided with a driving component for driving the transmission arc plate (7) to slide, the upper semicircular clamping plate (3) is fixed with an extension plate I (16), an angle locking component is connected between the upper semicircular clamping plate (3) and the lower semicircular clamping plate (4), the angle locking component is provided with an extension plate II (17) corresponding to the extension plate I (16), the upper semicircular clamping plate (3) is provided with a radial adjustment component, the radial adjustment component is fixed with a blocking plate (9) for blocking a sand eye hole (35) on the power pipeline (1), and the radial adjustment component is provided with a blocking component extending to the inside of the sand eye hole (35).

2. A pipeline plane sand hole plugging device according to claim 1, characterized in that: The clamping and pushing assembly comprises a locking wedge (23) fixed on the transmission arc plate (7), the wedge surface of the locking wedge (23) abuts against the radial slider (14), an extension block (25) is fixed to the side wall of the radial slider (14), and a radial spring (24) is fixed between the extension block (25) and the upper semicircular clamping plate (3).

3. A pipeline plane sand hole plugging device according to claim 2, characterized in that: A guide slider (26) is fixed to one end of the radial slider (14) away from the locking wedge (23), and the guide slider (26) is slidably embedded in the clamping arc block (8). A return spring (27) is fixedly connected between the clamping arc block (8) and the guide slider (26).

4. A pipeline plane sand hole plugging device according to claim 1, characterized in that: The driving assembly comprises a push wedge (38) slidably mounted on the docking plate (5), the push wedge (38) abutting against the end of the transmission arc plate (7), and a sliding assembly for driving the push wedge (38) to slide relative to the docking plate (5) is mounted on the docking plate (5).

5. A pipeline plane sand hole plugging device according to claim 4, characterized in that: The sliding assembly comprises a vertical plate (6) fixed on the docking plate (5), a threaded rod (2) threadedly connected to a push wedge (38) being rotatably mounted on the vertical plate (6), a gear I (15) and a gear II (37) being coaxially fixed on the two threaded rods (2), the gear I (15) and the gear II (37) being meshingly connected, and a hand crank II (36) being fixed at the end of the threaded rod (2).

6. A pipeline plane sand hole plugging device according to claim 1, characterized in that: The angle locking assembly comprises a connecting strip (19) slidably mounted on the upper semicircular clamping plate (3), the extension plate II (17) is fixed on the connecting strip (19), a push spring (22) is fixed between the connecting strip (19) and the upper semicircular clamping plate (3), a clamping wedge tooth (20) is fixed on the connecting strip (19), and a plurality of non-return wedge teeth (18) that are clamped and adapted to the clamping wedge teeth (20) are fixed on the lower semicircular clamping plate (4), and the non-return wedge teeth (18) are distributed around the axis of the fixed shaft (21) as the center.

7. A pipeline plane sand hole plugging device according to claim 1, characterized in that: The radial adjustment assembly comprises a lifting frame (12) radially slidably mounted on the upper semicircular clamping plate (3); a threaded column (13) is threadedly connected to the lifting frame (12); one end of the threaded column (13) is rotatably mounted on the upper semicircular clamping plate (3); a hand crank I (10) is fixed to the other end of the threaded column (13); and the blocking plate (9) is fixed on a side of the lifting frame (12) facing the power pipeline (1).

8. A pipeline plane sand hole plugging device according to claim 1, characterized in that: The blocking assembly comprises a sliding column (30) which is sealingly and slidingly connected to the blocking plate (9), the sliding column (30) slidingly passes through the lifting frame (12), a top plate (28) is fixed to one end of the sliding column (30), a spring ring (29) is fixed between the top plate (28) and the lifting frame (12), a sealing cone block (32) opposite to the sand eye hole (35) is fixed to the other end of the sliding column (30), and a locking assembly for locking the sliding column (30) in position is installed on the sealing cone block (32).

9. A pipeline plane sand hole plugging device according to claim 8, characterized in that: The locking assembly comprises a non-return trapezoidal block (31) slidably mounted on the side wall of the extension column (33), a connecting spring (34) is fixed between the non-return trapezoidal block (31) and the extension column (33), and a slope (39) opposite to the power pipeline (1) is formed at the bottom of the non-return trapezoidal block (31).

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