Pipeline connection protection device for electrical engineering

Abstract

The invention relates to the technical field of electrical engineering, and discloses an electrical engineering pipeline connection protection device which comprises a fixing ring, two fixing parts are symmetrically arranged on the side wall of the fixing ring, the two fixing parts are fixedly connected with mounting plates through bolts, two extending parts are arranged on the inner side of the fixing ring, and sealing assemblies are mounted on the two extending parts. The sealing assembly seals the connected pipeline through liquid pressure in the pipeline, fixing assemblies are arranged on the two opposite sides of the circular ring, each fixing assembly is composed of two arc-shaped plates, mounting parts are arranged at the opposite ends of the two arc-shaped plates, the mounting parts are fixedly connected through bolts, and the arc-shaped plates are movably connected with the side walls of the mounting plates. According to the pipeline connection protection device for the electrical engineering, the deformation capacity of the pipeline connection position can be improved, the situation that the pipeline connection position is broken and stretches out due to external environment factors is avoided, and first-aid repair treatment can be rapidly conducted when leakage happens to the pipeline connection position.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering technology, specifically to a pipeline connection protection device for electrical engineering. Background Technology

[0002] Urban integrated utility tunnels are sites for electrical engineering construction. Common living facilities are installed within these tunnels, including water pipes, gas pipes, sewage pipes, rainwater pipes, power cables, and communication fiber optic cables. Each pipeline system is installed separately in an independent tunnel, saving space, improving safety, and preventing damage caused by urban construction and the natural environment. For example, leaks from pipe ruptures are difficult to detect in time, and even if detected, timely repairs are often impossible. With technological advancements, mobile cameras can be installed within the integrated utility tunnels, transmitting images from inside the tunnels in real time with the help of communication networks. Furthermore, if leaks occur, this method ensures timely inspection of the tunnels and allows personnel to quickly locate and repair faults in case of emergencies, guaranteeing the safety of electrical engineering applications. The installation process is also less complex; for example, plastic water supply pipes can be directly heated and welded within the tunnel, which is not only fast but also facilitates pipe maintenance during use.

[0003] Currently, the pipeline network inside the utility tunnel is exposed, which facilitates maintenance. However, the lack of external soil compression leads to increased expansion and contraction of long-distance pipelines. Traditionally welded pipelines are prone to breakage at the weld joint, causing pipeline rupture and leakage. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a pipeline connection protection device for electrical engineering, which solves the problem that the increased expansion and contraction of long-distance pipelines in pipe racks makes traditionally welded pipelines prone to breakage at the weld joint, causing pipeline rupture and leakage.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pipeline connection protection device for electrical engineering, comprising a fixing ring, wherein two fixing parts are symmetrically arranged on the side wall of the fixing ring, and each of the two fixing parts is fixedly connected to a mounting plate by bolts; two extension parts are arranged on the inner side of the fixing ring, and a sealing component is installed on each of the two extension parts; the sealing component uses the liquid pressure in the pipeline to seal the connected pipeline.

[0008] Fixing components are provided on both sides of the ring. Each fixing component consists of two arc-shaped plates. Each arc-shaped plate has a mounting part at one end. The mounting parts are fixedly connected by bolts. The arc-shaped plates are movably connected to the side walls of the mounting plates.

[0009] The mounting plates on the two fixed parts are fixedly connected by multiple fixing rods. The two mounting plates are also fixedly connected by two symmetrically arranged rectangular tubes. An adjustment mechanism is installed inside the rectangular tubes and is connected to the mounting part on the arc plate.

[0010] Preferably, the sealing assembly includes an inner tube, which is fixed to the inside of the extension. An annular groove is provided on the wall of the inner tube. A rubber tube is sleeved on the inner tube through the annular groove, and an energy storage cavity is formed between the rubber tube and the annular groove. One end of the rubber tube is fixedly connected to one side of the annular groove, and the other end of the rubber tube is fixedly connected to one side of the extension.

[0011] The annular groove has multiple flow guide grooves on its sidewalls, and a flow guide section is formed between the two extensions. A flow passage is provided on the extension, and multiple evenly distributed flow guide holes are provided through the extension. All of the multiple flow guide holes are connected to the flow passage, and the flow passage is connected to the multiple flow guide grooves. An inclined surface is provided at the opening of the inner tube.

[0012] Preferably, the fixing component includes an inner lining plate, which is fixed to one side of the arc-shaped plate. The side wall of the inner lining plate is provided with a plurality of limiting protrusions, and the side wall of the arc-shaped plate has two openings that divide the arc-shaped plate into a plurality of clamping parts.

[0013] Preferably, one end of the arc-shaped plate is provided with an annular protrusion, and a first chamfer is provided at one corner of the annular protrusion. Both sides of the fixing ring are fixedly connected with circular rings, and a rubber ring is fixedly connected to the side wall of the circular ring. A second chamfer is provided at one corner of the rubber ring.

[0014] Preferably, a positioning plate is fixedly connected to one side of the mounting plate, and two limiting strips are symmetrically fixedly connected to the side wall of the positioning plate. The side walls of the two limiting strips are fitted with limiting slide rails, and the limiting slide rails are fixed to one side of the arc-shaped plate.

[0015] Preferably, the sidewall of the mounting plate is fixedly connected to a plurality of support plates, one end of the plurality of support plates is provided with an arc-shaped surface, the arc-shaped surface is in contact with the sidewall of the arc plate, and the sidewall of the support plate is fixedly connected to a plurality of positioning plates, all of the plurality of positioning plates are in contact with the sidewall of the arc plate.

[0016] Preferably, the adjusting mechanism includes a lead screw, on which two threaded sleeves are threadedly connected. Two connecting plates are provided on one side of the lead screw, and the two connecting plates are respectively fixed to the bolts of the mounting part. A strip-shaped through hole is opened on one side of the connecting plate, and a locking block is fixedly connected to one side of the threaded sleeve through the strip-shaped through hole.

[0017] The wall of the rectangular tube is rotatably connected to the wall of the lead screw via a rolling bearing. A rotating shaft is rotatably connected inside the rectangular tube via a bearing seat. A first bevel gear is fixedly connected to one end of the rotating shaft. A second bevel gear meshes with one side of the first bevel gear. The second bevel gear is fixed to the wall of the lead screw. A brake block is provided at the upper end of the rotating shaft.

[0018] Preferably, the side wall of the card block has two positioning holes, and the side wall of the connecting plate has two limiting holes that cooperate with the positioning holes.

[0019] Preferably, two support rods are provided on one side of the mounting plate below the fixing ring. The upper ends of the two support rods are provided with T-shaped grooves in which two T-shaped sliders are slidably connected. The T-shaped sliders are fixed to the side wall of the support plate by fixing bolts.

[0020] Preferably, a fixing block is fixedly connected inside the T-shaped slide groove, and springs are fixedly connected to both sides of the fixing block. The ends of the two springs away from the fixing block are respectively fixedly connected to the side walls of the two T-shaped sliders.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, the present invention provides a pipeline connection protection device for electrical engineering, which has the following beneficial effects:

[0023] 1. In use, the pipe is installed on the inner pipe, with the rubber tube on the inner pipe positioned inside the pipe. The arc-shaped plate is then fixed to the outside of the pipe using bolts. The limiting protrusion on the inner lining plate makes close contact with the outside of the pipe, creating an indentation. This limiting protrusion increases friction and sealing between the pipe and the device. A limiting strip is then inserted into the limiting slide rail to mount the arc-shaped plate onto the mounting plate. The positioning plate and limiting strip, along with the mounting plate, connect the two fixing components in series. The fixed components can slide a certain distance on the positioning plate to absorb displacement caused by pipe contraction. Finally, a fixing rod is used to secure the two mounting plates. This completes the installation of the pipeline protection device. When fluid flows through the pipe, the sealing component uses the liquid pressure within the pipe to seal the connected pipes, thereby improving the deformation capacity of the pipe connection and preventing breakage or protrusion due to external environmental factors.

[0024] 2. The sealing mechanism provided in this invention allows the liquid in the pipe to pass through the guide hole and enter the flow channel during use. At this time, the guide groove guides the liquid to the energy storage cavity between the rubber tube and the annular groove. The high-pressure liquid can cause the rubber tube to expand and deform, making it in close contact with the inner wall of the pipe. This improves the sealing performance between the pipe and the connection. The pipe can also slide a certain distance on the inner liner tube and the rubber tube of the sealing component, thereby absorbing the deformation at the pipe connection.

[0025] 3. The adjustment mechanism provided in this invention allows for the insertion of a positioning pin into the limiting hole and positioning hole when a leak occurs at the pipe connection. At this time, a wrench can be used to turn the brake block to rotate the shaft. When the shaft rotates, it drives the first bevel gear to rotate the second bevel gear. When the second bevel gear rotates, it drives the screw to pull the two threaded sleeves to move the connecting plates relative to each other. When the connecting plates move, they drive the arc plate to move. When the arc plate moves, it can straighten the bent pipe or directly pull the arc plate to slide on the pipe surface. At this time, after the annular protrusion on the arc plate moves a certain distance, it squeezes the rubber ring. The rubber ring deforms under the support of the ring. At this time, the tubular fixing assembly composed of the two arc plates can form a sealed space with the fixing ring. In this way, it can quickly carry out emergency repair when the sealing mechanism fails and a leak occurs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a pipeline connection protection device for electrical engineering proposed in this invention;

[0027] Figure 2 The present invention provides a pipeline connection protection device for electrical engineering. Figure 1 Cross-section Figure 1 ;

[0028] Figure 3 This invention proposes a pipeline connection protection device for electrical engineering. Figure 2 Enlarged view of the structure at point A in the middle;

[0029] Figure 4 This is a cross-sectional view of a fixed ring, inner tube, and rubber ring in a pipeline connection protection device for electrical engineering proposed in this invention.

[0030] Figure 5 This is a schematic diagram of the structure of a circular ring, a rubber ring, a fixed ring, an inner tube, and a rubber ring in a pipeline connection protection device for electrical engineering proposed in this invention;

[0031] Figure 6 This is a schematic diagram of the structure of the rubber tube and inner tube in an electrical engineering pipeline connection protection device proposed in this invention;

[0032] Figure 7This is a schematic diagram of the slide rail, arc plate, and inner lining plate in an electrical engineering pipeline connection protection device proposed in this invention;

[0033] Figure 8 This is a schematic diagram of the structure of the slide rail, positioning plate, arc-shaped plate, and inner lining plate in a pipeline connection protection device for electrical engineering proposed in this invention. Figure 1 ;

[0034] Figure 9 This is a schematic diagram of the structure of the slide rail, positioning plate, arc-shaped plate, and inner lining plate in a pipeline connection protection device for electrical engineering proposed in this invention. Figure 2 ;

[0035] Figure 10 This is a schematic diagram of the structure of the support rod, mounting plate, fixing ring, support plate, circular ring and rubber ring in a pipeline connection protection device for electrical engineering proposed in this invention;

[0036] Figure 11 This is a schematic diagram of the structure of the support rod, mounting plate, rectangular tube support plate, and adjustment mechanism in the pipeline connection protection device for electrical engineering proposed in this invention;

[0037] Figure 12 This is a schematic diagram of the adjusting mechanism in a pipeline connection protection device for electrical engineering proposed in this invention;

[0038] Figure 13 This is a cross-sectional view of a connecting plate, threaded sleeve, and clamping block in an electrical engineering pipeline connection protection device proposed in this invention.

[0039] Figure 14 The present invention provides a pipeline connection protection device for electrical engineering. Figure 1 Cross-section Figure 2 ;

[0040] Figure 15 This invention proposes a pipeline connection protection device for electrical engineering. Figure 14 Enlarged view of the structure at point B;

[0041] Figure 16 This is a cross-sectional view of a support rod in a pipeline connection protection device for electrical engineering proposed in this invention.

[0042] In the diagram: 1. Arc-shaped plate; 2. Inner lining plate; 3. Support plate; 4. Support rod; 5. T-shaped slider; 6. Rectangular tube; 7. Mounting plate; 8. Fixing rod; 9. Threaded sleeve; 10. Connecting plate; 11. Lead screw; 12. Slide rail; 13. Positioning plate; 14. Limiting strip; 15. Inner tube; 16. Limiting protrusion; 17. Rubber tube; 18. Fixing ring; 19. Rubber ring; 20. Circular ring; 21. Flow guide; 22. Flow guide hole; 23. Annular protrusion; 24. Inclined surface; 25. Flow guide groove; 26. Extension; 27. Flow passage; 28. Opening; 29. ​​Second bevel gear; 30. First bevel gear; 31. Rotating shaft; 32. Braking block; 33. Limiting hole; 34. Positioning hole; 35. Locking block; 36. Strip-shaped through hole; 37. Spring; 38. Fixing block. Detailed Implementation

[0043] 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, and 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.

[0044] Example 1:

[0045] See attached document Figure 1-16 A pipeline connection protection device for electrical engineering includes a fixing ring 18. Two fixing parts are symmetrically arranged on the side wall of the fixing ring 18. The two fixing parts are fixedly connected to the mounting plate 7 by bolts. Two extension parts 26 are arranged on the inner side of the fixing ring 18. A sealing component is installed on the two extension parts 26. The sealing component uses the liquid pressure in the pipeline to seal the connected pipeline.

[0046] Fixed components are provided on both sides of the ring 20. Each fixed component consists of two arc-shaped plates 1. Each arc-shaped plate 1 has a mounting part at one end. The mounting parts are fixedly connected by bolts. The arc-shaped plate 1 is movably connected to the side wall of the mounting plate 7. A positioning plate 13 is fixedly connected to one side of the mounting plate 7. Two limiting strips 14 are symmetrically fixedly connected to the side wall of the positioning plate 13. Limiting slide rails 12 are sleeved on the side wall of the two limiting strips 14. The limiting slide rails 12 are fixed to one side of the arc-shaped plate 1. Multiple support plates 3 are fixedly connected to the side wall of the mounting plate 7. One end of the multiple support plates 3 has an arc-shaped surface. The arc-shaped surface contacts the side wall of the arc-shaped plate 1. Multiple positioning plates 13 are fixedly connected to the side wall of the support plates 3. All of the multiple positioning plates 13 are in contact with the side wall of the arc-shaped plate 1.

[0047] The mounting plates 7 on the two fixed parts are fixedly connected by multiple fixing rods 8. Two symmetrically arranged rectangular tubes 6 are fixedly connected between the two mounting plates 7. An adjustment mechanism is installed inside the rectangular tubes 6. The adjustment mechanism is connected to the mounting part on the arc plate 1. Two support rods 4 are provided on one side of the mounting plate 7 below the fixing ring 18. Two T-shaped sliders 5 are slidably connected in the upper end of each support rod 4 in a T-shaped groove. The T-shaped sliders 5 are fixed to the side wall of the support plate 3 by fixing bolts. A fixing block 38 is fixedly connected in the T-shaped groove. Springs 37 are fixedly connected to both sides of the fixing block 38. The ends of the two springs 37 away from the fixing block 38 are fixedly connected to the side walls of the two T-shaped sliders 5 respectively.

[0048] In use, the pipe (not shown in the figure) is installed on the inner pipe 15. At this time, the rubber tube 17 set on the inner pipe 15 is located inside the pipe. Then, the arc plate 1 is fixed to the outside of the pipe with bolts. At this time, the limiting protrusion 16 set on the inner lining plate 2 is in close contact with the outside of the pipe and presses out an indentation. The limiting protrusion 16 can increase the friction and sealing between the pipe and the limiting plate. Then, the limiting strip 14 is inserted into the limiting slide rail 12 to install the arc plate 1 on the mounting plate 7. At this time, the positioning plate 13 and the limiting strip 14 are used to fix the two fixing components in series. The fixed components can slide a certain distance on the positioning plate 13 to absorb the displacement generated when the pipe contracts. Finally, the fixing rod 8 is used to fix the two mounting plates 7. At this time, the installation of the pipeline protection device is completed. When there is fluid flowing in the pipeline, the sealing component can use the liquid pressure in the pipeline to seal the connected pipe, thereby improving the deformation capacity of the pipe connection and preventing the pipe connection from breaking and protruding due to external environmental factors.

[0049] Example 2: The difference from Example 1 is that;

[0050] See attached document Figure 2-6 The sealing assembly includes an inner tube 15, which is fixed inside the extension 26. An annular groove is provided on the wall of the inner tube 15. A rubber tube 17 is sleeved on the inner tube 15 through the annular groove. An energy storage cavity is formed between the rubber tube 17 and the annular groove. One end of the rubber tube 17 is fixedly connected to one side of the annular groove, and the other end of the rubber tube 17 is fixedly connected to one side of the extension 26.

[0051] The annular groove has multiple guide grooves 25 on its sidewalls, and a guide section 21 is formed between the two extensions 26. A flow channel 27 is provided on the extension 26, and multiple evenly distributed guide holes 22 are provided through the extension 26. All the guide holes 22 are connected to the flow channel 27, and the flow channel 27 is connected to the multiple guide grooves 25. An inclined surface 24 is provided at the opening of the inner tube 15.

[0052] The sealing mechanism provided in this invention allows liquid in the pipe to pass through the guide hole 22 and enter the flow channel 27 during use. At this time, the guide groove 25 guides the liquid to the energy storage cavity between the rubber tube 17 and the annular groove. The high-pressure liquid can cause the rubber tube 17 to expand and deform, making it in close contact with the inner wall of the pipe. This improves the sealing performance of the connection between the pipe and the pipe. The pipe can also slide a certain distance on the inner liner tube 15 and the rubber tube 17 of the sealing component, thereby absorbing the deformation at the pipe connection.

[0053] Example 3: The difference from Example 1 is that;

[0054] See attached document Figure 11-13 The adjusting mechanism includes a lead screw 11, on which two threaded sleeves 9 are threadedly connected. Both threaded sleeves 9 are internally threaded and the threads turn in opposite directions. Two connecting plates 10 are provided on one side of the lead screw 11. The two connecting plates 10 are fixed to the bolts of the mounting part. A strip-shaped through hole 36 is opened on one side of the connecting plate 10. One side of the threaded sleeve 9 passes through the strip-shaped through hole 36 and is fixedly connected to a locking block 35.

[0055] The wall of the rectangular tube 6 is rotatably connected to the wall of the lead screw 11 via a rolling bearing. Inside the rectangular tube 6, a rotating shaft 31 is rotatably connected via a bearing seat. One end of the rotating shaft 31 is fixedly connected to a first bevel gear 30. A second bevel gear 29 meshes with one side of the first bevel gear 30. The second bevel gear 29 is fixed on the wall of the lead screw 11. A brake block 32 is provided at the upper end of the rotating shaft 31. Two positioning holes 34 are provided on the side wall of the locking block 35. Two limiting holes 33 that cooperate with the positioning holes 34 are provided on the side wall of the connecting plate 10.

[0056] The fixing assembly includes an inner liner plate 2, which is fixed to one side of the arc-shaped plate 1. The side wall of the inner liner plate 2 is provided with multiple limiting protrusions 16. The side wall of the arc-shaped plate 1 has two openings 28, which divide the arc-shaped plate 1 into multiple clamping parts. One end of the arc-shaped plate 1 is provided with an annular protrusion 23, and a first chamfer is provided at one corner of the annular protrusion 23. The two opposite sides of the fixing ring 18 are fixedly connected with rings 20. The side wall of the ring 20 is fixedly connected with a rubber ring 19, and a second chamfer is provided at one corner of the rubber ring 19.

[0057] The present invention has an adjustment mechanism that, when a leak occurs at the connection of the pipe, a positioning pin is inserted into the limiting hole 33 and the positioning hole 34. At this time, a wrench can be used to turn the brake block 32 to rotate the rotating shaft 31. When the rotating shaft 31 rotates, it drives the first bevel gear 30 to rotate the second bevel gear 29. When the second bevel gear 29 rotates, it drives the lead screw 11 to pull the two threaded sleeves 9 to move the connecting plate 10 relative to each other. When the connecting plate 10 moves, it drives the arc plate 1 to move. When the arc plate 1 moves, it can straighten the bent pipe or directly pull the arc plate 1 to slide on the pipe surface. At this time, after the annular protrusion 23 on the arc plate 1 moves a certain distance, it squeezes the rubber ring 19. The rubber ring 19 deforms under the support of the ring 20. At this time, the tubular fixing assembly composed of the two arc plates 1 can form a sealed space with the fixing ring 18. In this way, it can quickly carry out emergency repair when the sealing mechanism fails and leaks occur.

[0058] It should be noted that the term "comprising" or any other variation thereof is 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 limitation, 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.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipeline connection protection device for electrical engineering, comprising a retaining ring (18), characterized in that: The fixing ring (18) has two fixing parts symmetrically arranged on its side wall. Both fixing parts are fixedly connected to the mounting plate (7) by bolts. The inner side of the fixing ring (18) has two extensions (26). Both extensions (26) are equipped with sealing components. The sealing components use the liquid pressure in the pipeline to seal the connected pipeline. The ring (20) is provided with fixing components on both sides opposite to each other. Each fixing component is composed of two arc plates (1). Each arc plate (1) is provided with a mounting part at one end opposite to each other. The mounting parts are fixedly connected by bolts. The arc plate (1) is movably connected to the side wall of the mounting plate (7). The mounting plates (7) on the two fixed parts are fixedly connected by multiple fixing rods (8). The two mounting plates (7) are fixedly connected by two symmetrically arranged rectangular tubes (6). An adjustment mechanism is installed inside the rectangular tubes (6). The adjustment mechanism is connected to the mounting part on the arc plate (1).

2. The pipeline connection protection device for electrical engineering according to claim 1, characterized in that: The sealing assembly includes an inner tube (15), which is fixed inside the extension (26). An annular groove is provided on the wall of the inner tube (15). A rubber tube (17) is sleeved on the inner tube (15) through the annular groove. An energy storage cavity is formed between the rubber tube (17) and the annular groove. One end of the rubber tube (17) is fixedly connected to one side of the annular groove, and the other end of the rubber tube (17) is fixedly connected to one side of the extension (26). The annular groove has multiple guide grooves (25) on its sidewalls, and a guide section (21) is formed between the two extensions (26). A flow channel (27) is provided on the extension (26), and multiple evenly distributed guide holes (22) are provided through the extension (26). The multiple guide holes (22) are all connected to the flow channel (27), and the flow channel (27) is connected to the multiple guide grooves (25). An inclined surface (24) is provided at the opening of the inner tube (15).

3. The pipeline connection protection device for electrical engineering according to claim 1, characterized in that: The fixing component includes an inner lining plate (2), which is fixed to one side of the arc plate (1). The side wall of the inner lining plate (2) is provided with a plurality of limiting protrusions (16), and the side wall of the arc plate (1) has two openings (28), which divide the arc plate (1) into a plurality of clamping parts.

4. The pipeline connection protection device for electrical engineering according to claim 1, characterized in that: One end of the arc plate (1) is provided with an annular protrusion (23), and a first chamfer is provided at one corner of the annular protrusion (23). Both sides of the fixed ring (18) are fixedly connected with rings (20), and a rubber ring (19) is fixedly connected to the side wall of the ring (20). A second chamfer is provided at one corner of the rubber ring (19).

5. The pipeline connection protection device for electrical engineering according to claim 1, characterized in that: A positioning plate (13) is fixedly connected to one side of the mounting plate (7). Two limiting strips (14) are symmetrically fixedly connected to the side wall of the positioning plate (13). The side walls of the two limiting strips (14) are fitted with limiting slide rails (12). The limiting slide rails (12) are fixed to one side of the arc plate (1).

6. The pipeline connection protection device for electrical engineering according to claim 1, characterized in that: The mounting plate (7) has multiple support plates (3) fixedly connected to its side wall. One end of each support plate (3) has an arc-shaped surface that contacts the side wall of the arc plate (1). The support plate (3) has multiple positioning plates (13) fixedly connected to its side wall. All positioning plates (13) are in contact with the side wall of the arc plate (1).

7. The pipeline connection protection device for electrical engineering according to claim 1, characterized in that: The adjusting mechanism includes a lead screw (11), on which two threaded sleeves (9) are threadedly connected. Two connecting plates (10) are provided on one side of the lead screw (11). The two connecting plates (10) are respectively fixed on the bolts of the mounting part. A strip-shaped through hole (36) is opened on one side of the connecting plate (10). One side of the threaded sleeve (9) passes through the strip-shaped through hole (36) and is fixedly connected to a locking block (35). The wall of the rectangular tube (6) is rotatably connected to the wall of the lead screw (11) through a rolling bearing. A rotating shaft (31) is rotatably connected inside the rectangular tube (6) through a bearing seat. A first bevel gear (30) is fixedly connected to one end of the rotating shaft (31). A second bevel gear (29) meshes with one side of the first bevel gear (30). The second bevel gear (29) is fixed on the wall of the lead screw (11). A brake block (32) is provided at the upper end of the rotating shaft (31).

8. The pipeline connection protection device for electrical engineering according to claim 7, characterized in that: The side wall of the card block (35) has two positioning holes (34), and the side wall of the connecting plate (10) has two limiting holes (33) that cooperate with the positioning holes (34).

9. A pipeline connection protection device for electrical engineering according to claim 1, characterized in that: Two support rods (4) are provided on one side of the mounting plate (7) below the fixing ring (18). The upper ends of the two support rods (4) are provided with T-shaped grooves in which two T-shaped sliders (5) are slidably connected. The T-shaped sliders (5) are fixed to the side wall of the support plate (3) by fixing bolts.

10. A pipeline connection protection device for electrical engineering according to claim 9, characterized in that: A fixing block (38) is fixedly connected inside the T-shaped groove. Springs (37) are fixedly connected to both sides of the fixing block (38). The ends of the two springs (37) away from the fixing block (38) are fixedly connected to the side walls of the two T-shaped sliders (5).

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