Auxiliary attaching clamp mechanism for monitoring leakage of welding seam of cooling water return pipeline in power plant

Abstract

The invention belongs to the related technical field of clamps for pipeline monitoring, and particularly relates to a power plant internal cooling water return pipeline welding seam leakage monitoring auxiliary attaching clamp mechanism which comprises a base, a height adjusting assembly is arranged at the upper end of the base, and the upper end of the height adjusting assembly is fixedly connected to the lower end of a mounting plate; a meshing assembly is arranged at the upper end of the mounting plate, and the left end and the right end of the meshing assembly are meshed with the two clamping and fixing assemblies correspondingly. Through linkage of the meshing assembly and the clamping and fixing assembly, the front pair of pipeline clamping plates and the rear pair of pipeline clamping plates can be synchronously driven to get close to each other or get away from each other, rapid, stable and centered clamping of different pipe diameters is achieved, meanwhile, a T-shaped plug pin rapid detaching structure pre-tightened by a spring is adopted between the clamping and fixing assembly and the connecting base, the pipeline clamping plates are modularized, and the clamping and fixing assembly is convenient to assemble and disassemble. Corresponding pipeline clamping plates and silica gel gaskets can be rapidly replaced according to different types of cooling water return pipelines in a monitored power plant, and the universality and the field operation efficiency of the device are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the technical field of clamps for monitoring cooling return water pipelines in power plants, specifically relating to an auxiliary fitting clamp mechanism for monitoring weld leaks in cooling return water pipelines in power plants. Background Technology

[0002] In industrial sectors such as petrochemicals, natural gas transmission, urban heating networks, and pressure vessels, the safe operation of pipeline systems is of paramount importance. As the weakest link in pipeline connections, the quality of welds directly affects the sealing and structural integrity of the entire system. Therefore, monitoring leaks in pipeline welds is a key step in preventing accidents and ensuring safe production. Pipeline clamping mechanisms are needed to ensure the stability of the pipeline during the monitoring process.

[0003] The cooling water return pipeline within a power plant is a key component of the cooling water circulation system. It is responsible for transporting water that has absorbed heat from the equipment and whose temperature has risen back to the cooling facilities (such as cooling towers or condensers) for cooling and reuse. This pipeline system typically forms a closed or open circulation loop with the inlet pipeline to maintain the stable operation of the heat exchange equipment.

[0004] Problems with existing technology:

[0005] 1. Many existing power plant cooling return water pipe clamps are designed for specific pipe diameters or simple shapes, lacking effective adaptive adjustment mechanisms. When encountering cooling return water pipes of different specifications in power plants, multiple sets of clamps need to be prepared or complex mechanical adjustments need to be made. The replacement is cumbersome and it is difficult to meet the rapid monitoring needs of multi-specification cooling return water pipes in complex sites.

[0006] 2. Existing technologies mostly employ manual screw clamping or lever clamping methods, where clamping force and synchronization rely heavily on operator experience, resulting in low efficiency. In monitoring sites with limited space or harsh environments, frequent manual operations not only increase the labor intensity and safety hazards for operators but also make it difficult to achieve accurate and repeatable clamping and positioning. Summary of the Invention

[0007] The purpose of this invention is to provide an auxiliary fitting clamp mechanism for monitoring weld leaks in cooling water return pipes in power plants. This mechanism can solve the problem that many existing clamps for cooling water return pipes in power plants are designed for specific pipe diameters or simple shapes, lack effective adaptive adjustment mechanisms, and require multiple sets of clamps or complex mechanical adjustments when encountering cooling water return pipes of different specifications. This makes the replacement process cumbersome and difficult to meet the rapid monitoring needs of cooling water return pipes of various specifications in complex sites.

[0008] The specific technical solution adopted by this invention is as follows:

[0009] A clamping mechanism for monitoring weld leaks in cooling return water pipes in power plants includes a base. A height adjustment component is mounted on the upper end of the base, and the upper end of the height adjustment component is fixedly connected to the lower end of a mounting plate. An engagement component is mounted on the upper end of the mounting plate, with its left and right ends respectively engaging with two clamping and fixing components. The lower ends of both clamping and fixing components are mounted on the upper end of the mounting plate. Each clamping and fixing component is inserted into one of four connecting seats, each with an internal insertion hole. Pipe clamps are fixedly connected to the relatively close ends of the four connecting seats, and silicone gaskets are provided on the inner sides of each of the four pipe clamps.

[0010] Two L-shaped limiting slide plates are fixedly connected to the lower left and right sides of the mounting plate. The four L-shaped limiting slide plates are slidably connected to the four T-shaped columns through guide holes opened inside their lower ends. The lower ends of the four T-shaped columns are fixedly connected to the base. The upper end of the base is provided with the battery body, and the upper end of the mounting plate is provided with the control panel body.

[0011] The engagement assembly includes an electric push rod body, which is fixedly installed on the upper end of the mounting plate. A push-pull plate is fixedly connected to the rear end of the electric push rod body, and the push-pull plate is slidably connected to two guide rods through two guide holes opened inside it.

[0012] The front and rear ends of the two guide rods three are fixedly connected to the fixing plates four, the lower ends of the four fixing plates four are fixedly connected to the mounting plate, and the left and right ends of the push-pull plate are fixedly connected to the meshing tooth plates. The two meshing tooth plates mesh with the two clamping and fixing components respectively.

[0013] Both clamping and fixing components include a fixing frame. Both fixing frames are fixedly mounted on the upper end of the mounting plate through four fixing posts at their lower ends. Both fixing frames are movably connected to two rotating shafts through connecting holes opened inside their lower ends. Both rotating shafts are fixedly connected to meshing gears at their lower ends. The two meshing gears mesh with two meshing tooth plates respectively. Both rotating shafts are fixedly connected to rotating plates at their upper ends.

[0014] Both rotating plates are movably connected to one end of the four hinge plates via two hinge shafts at their upper ends. The other ends of the four hinge plates are movably connected to four sliding brackets, each with another hinge shaft at its lower end. A plug-in frame is fixedly installed on the upper side of each of the four sliding brackets. Each of the four plug-in frames is plugged into a connecting seat with a hole inside via a T-shaped pin. A spring is sleeved on each of the four T-shaped pins.

[0015] The relatively distant ends of the four springs are respectively fixedly connected to the relatively distant sides of the four T-shaped pins, and the relatively close ends of the four springs are respectively fixedly connected to the four corresponding plug-in frames. The four sliding brackets are each slidably connected to the four guide rods II through two guide holes opened inside their lower ends. The four guide rods II are divided into two groups, and their front and rear ends are respectively fixedly connected to the front and rear sides inside the two fixed frames.

[0016] The height adjustment assembly includes a dual-axis motor, which is fixedly mounted on the upper end of the base. The dual-axis motor is fixedly connected to one end of two rotating shafts via two output shafts. The other end of each of the two rotating shafts is fixedly connected to a bevel gear.

[0017] Two bevel gears mesh with two bevel gears, and the two bevel gears are fixedly connected to two rotating shafts. The front and rear sides of the two rotating shafts are fixedly connected to one end of four push plates, and the other ends of the four push plates are movably connected to the front and rear sides of two sliding support rods. The two sliding support rods are slidably connected to two guide rods through guide holes opened inside their front and rear ends.

[0018] Each of the two guide rods is fixedly connected to a fixing plate, and all four fixing plates are fixedly connected to the lower end of the mounting plate. Each of the two rotating shafts is movably connected to a fixing plate, and the lower ends of all four fixing plates are fixedly connected to the base. Each of the two rotating shafts is movably connected to a fixing plate, and the lower ends of both fixing plates are fixedly connected to the base.

[0019] The technical effects achieved by this invention are as follows:

[0020] 1. This invention, through the linkage of the meshing component and the clamping and fixing component, can synchronously drive the two pairs of pipe clamps to move closer or further apart, achieving rapid, stable, and centered clamping of pipes of different diameters. Simultaneously, the clamping and fixing component and the connecting seat employ a spring-preloaded T-shaped pin quick-release structure, making the pipe clamps modular. This allows for quick replacement of the corresponding pipe clamps and silicone gaskets according to the different types of cooling return water pipes monitored in the power plant, significantly enhancing the device's versatility and on-site operational efficiency. Driven by an electric push rod and a dual-axis motor, the main movements can be controlled remotely or with a single button press via the control panel for clamping, releasing, and lifting. This avoids direct manual operation in complex or dangerous cooling return water pipe environments within power plants, reducing labor intensity and safety risks, and making the entire weld leak monitoring process more convenient and controllable.

[0021] 2. This invention, through the coordination of a dual-axis motor, bevel gear, push plate, L-shaped limiting slide plate, and T-shaped column, not only achieves precise vertical height adjustment of the entire clamping mechanism to adapt to the monitoring needs of welds at different locations, but also greatly enhances the rigidity and stability of the mounting plate during lifting. This dual protection effectively reduces errors caused by device shaking or inaccurate positioning during monitoring, ensuring the relative position stability between the monitoring equipment and the weld of the cooling return water pipe in the power plant being monitored, thereby improving the accuracy and reliability of leakage monitoring data. Attached Figure Description

[0022] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the left-view stereoscopic structure in this invention;

[0024] Figure 3 This is a front-view three-dimensional structural diagram of the pipe clamp in this invention;

[0025] Figure 4 This is a front-view three-dimensional structural diagram of the meshing component in this invention;

[0026] Figure 5 This is a front-view three-dimensional structural diagram of the height adjustment component in this invention;

[0027] Figure 6 This is a left-side perspective three-dimensional structural diagram of the clamping and fixing component in this invention;

[0028] Figure 7 This is a top-view three-dimensional structural diagram of the clamping and fixing component in this invention;

[0029] Figure 8 This is a bottom-view three-dimensional structural diagram of the clamping and fixing component in this invention.

[0030] The attached diagram lists the components represented by each number as follows: 1. Base; 2. T-shaped column; 3. L-shaped limiting slide plate; 4. Height adjustment assembly; 41. Fixing plate one; 42. Sliding support rod; 43. Guide rod one; 44. Push plate; 45. Fixing plate two; 46. Rotating shaft one; 47. Bevel gear one; 48. Fixing plate three; 49. Rotating shaft two; 410. Dual-axis motor; 411. Bevel gear two; 5. Battery body; 6. Clamping and fixing assembly; 61. Fixing frame; 62. Hinge plate 63. Rotating plate; 64. Meshing gear; 65. Sliding bracket; 66. Guide rod II; 67. Plug-in frame; 68. T-shaped pin; 69. Spring; 610. Rotating shaft III; 7. Meshing assembly; 71. Meshing tooth plate; 72. Fixing plate IV; 73. Push-pull plate; 74. Electric push rod body; 75. Guide rod III; 8. Control panel body; 9. Mounting plate; 10. Pipe clamp; 11. Connecting seat; 12. Silicone gasket. Detailed Implementation

[0031] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0032] like Figure 1-8 As shown, an auxiliary fitting clamp mechanism for monitoring weld leaks in cooling return water pipes in power plants includes a base 1. A height adjustment component 4 is mounted on the upper end of the base 1, and the upper end of the height adjustment component 4 is fixedly connected to the lower end of a mounting plate 9. An engagement component 7 is mounted on the upper end of the mounting plate 9, with its left and right ends engaging with two clamping and fixing components 6 respectively. The lower ends of the two clamping and fixing components 6 are both located on the upper end of the mounting plate 9. Each of the two clamping and fixing components 6 is inserted into four connecting seats 11, each with an internal insertion hole. Pipe clamps 10 are fixedly connected to the relatively close ends of the four connecting seats 11. Silicone gaskets 12 are provided on the inner sides of each of the four pipe clamps 10. Through the mutual cooperation between the engagement component 7 and the clamping and fixing components 6, the corresponding two connecting seats on the front and rear sides can be driven. The connectors 11 are brought close together, and under the action of the four pipe clamps 10, the cooling water return pipes in the power plant to be monitored can be clamped and fixed, ensuring the stability of the cooling water return pipes in the power plant during weld leakage monitoring. Through the cooperation of the clamping and fixing components 6 and the connectors 11, different pipe clamps 10 can be easily replaced according to the different types of cooling water return pipes in the power plant to be clamped and fixed, thus expanding the applicability of the device. The height adjustment component 4 drives the mounting plate 9 to move upward, and then, with the cooperation of the meshing component 7, the clamping and fixing component 6, the connectors 11 and the pipe clamps 10, the clamping position and height of the pipe can be appropriately adjusted according to the different needs during the monitoring process.

[0033] Furthermore, two L-shaped limiting slide plates 3 are fixedly connected to the lower left and right sides of the mounting plate 9. The four L-shaped limiting slide plates 3 are slidably connected to the four T-shaped columns 2 through guide holes opened inside their lower ends. The lower ends of the four T-shaped columns 2 are fixedly connected to the base 1. The upper end of the base 1 is provided with the battery body 5, and the upper end of the mounting plate 9 is provided with the control panel body 8. The mutual cooperation between the L-shaped limiting slide plates 3 and the T-shaped columns 2 can increase the stability of the mounting plate 9 during the up and down movement.

[0034] Furthermore, the meshing assembly 7 includes an electric push rod body 74, which is fixedly installed on the upper end of the mounting plate 9. A push-pull plate 73 is fixedly connected to the rear end of the electric push rod body 74. The push-pull plate 73 is slidably connected to two guide rods 75 through two guide holes opened inside it. Fixed plates 72 are fixedly connected to both the front and rear ends of the two guide rods 75. The lower ends of the four fixed plates 72 are fixedly connected to the mounting plate 9. Meshing teeth 71 are fixedly connected to both the left and right ends of the push-pull plate 73. The two meshing teeth 71 mesh with the two clamping and fixing assemblies 6 respectively. The cooperation of the guide rods 75 and the fixed plates 72 can increase the stability of the push-pull plate 73 during movement. The electric push rod body 74 drives the push-pull plate 73 to move backward, thereby achieving the effect of driving the two meshing teeth 71 to move backward synchronously.

[0035] Both clamping and fixing assemblies 6 include a fixing frame 61. Each fixing frame 61 is fixedly mounted on the upper end of the mounting plate 9 via four fixing posts at its lower end. Each fixing frame 61 is movably connected to two rotating shafts 610 via connecting holes inside its lower end. Each rotating shaft 610 has a meshing gear 64 fixedly connected to its lower end, and the two meshing gears 64 mesh with two meshing toothed plates 71 respectively. Each rotating shaft 610 has a rotating plate 63 fixedly connected to its upper end, and each rotating plate 63 has two hinge shafts at its upper end that are respectively connected to four hinge plates 62. One end of each of the four hinge plates 62 is movably connected to a sliding bracket 65, the other end of which is movably connected to one of the four sliding brackets 65, each with another hinge shaft at its lower end. A plug-in frame 67 is fixedly mounted on the upper side of each of the four sliding brackets 65. Each plug-in frame 67 is plugged into a connecting seat 11, which has an internal insertion hole, via a T-shaped pin 68. A spring 69 is fitted onto each of the four T-shaped pins 68. The relatively distant ends of the four springs 69 are fixedly connected to the relatively distant sides of the four T-shaped pins 68, and the relatively close ends of the four springs 69 are connected to the four corresponding plug-in frames. 67 is fixedly connected. Four sliding brackets 65 are slidably connected to four guide rods 66 via two guide holes at their lower ends. The four guide rods 66 are divided into two groups, with their front and rear ends fixedly connected to the front and rear sides of the two fixed frames 61. During the synchronous backward movement of the two meshing toothed plates 71, the meshing gears 64 enable the two rotating shafts 610 to rotate. The rotation of the two rotating shafts 610, along with the rotating plate 63, hinge plate 62, sliding brackets 65, and plug-in frame 67, allows for... With the cooperation of the connecting seat 11, the two corresponding pipe clamps 10 on the front and rear sides can be driven to move closer to each other until the pipe is clamped and fixed. Through the cooperation of the T-shaped pin 68, spring 69, plug frame 67 and connecting seat 11, the pipe clamp 10 can be quickly installed and fixed. Correspondingly, the pipe clamp 10 can be easily replaced according to the different types of cooling return water pipes in the power plant to be clamped. Through the cooperation of the guide rod 66 and the fixing frame 61, the movement direction of the sliding bracket 65 can be restricted.

[0036] The height adjustment assembly 4 includes a dual-axis motor 410, which is fixedly mounted on the upper end of the base 1. The dual-axis motor 410 has two output shafts fixedly connected to one end of two rotating shafts 49. The other end of each rotating shaft 49 is fixedly connected to a bevel gear 47, which meshes with two bevel gears 411. The two bevel gears 411 are fixedly connected to two rotating shafts 46. The front and rear sides of each rotating shaft 46 are fixedly connected to one end of four push plates 44. The other ends of the four push plates 44 are movably connected to the front and rear sides of two sliding support rods 42. Each sliding support rod 42 is slidably connected to two guide rods 43 through guide holes at its front and rear ends. The left and right ends of each guide rod 43 are fixedly connected to fixing plates 41. All four fixing plates 41 are fixedly connected to the lower end of the mounting plate 9. The front of each rotating shaft 46... Both ends are movably connected to fixed plates 45. The lower ends of the four fixed plates 45 are fixedly connected to the base 1. Fixed plates 48 are movably connected to the two rotating shafts 49. The lower ends of the two fixed plates 48 are fixedly connected to the base 1. The rotation of the output shaft of the dual-axis motor 410 drives the two rotating shafts 49 to rotate. With the cooperation of the bevel gear 47 and bevel gear 411, the two rotating shafts 46 can be rotated relative to each other. The relative rotation of the two rotating shafts 46, with the cooperation of the push plate 44, sliding support rod 42, guide rod 43 and fixed plate 41, can drive the mounting plate 9 to move upward. With the cooperation of the meshing component 7 and clamping and fixing component 6 on the mounting plate 9, the height of the pipe clamping position can be adjusted, which is convenient for monitoring weld leaks in the pipe at different heights as needed.

[0037] The working principle of this invention is as follows:

[0038] Place the device base 1 on a stable surface near the cooling return water pipe in the power plant to be monitored. Select the appropriate pipe clamp 10 and silicone gasket 12 according to the type of pipe. Then, pull the T-shaped pin 68 to move it away from the corresponding plug frame 67, so that the plug end of the T-shaped pin 68 moves out of the corresponding plug frame 67. Then, align the connector 11 and insert it into the plug frame 67. At this time, release the T-shaped pin 68. Under the action of the spring 69, the T-shaped pin 68 can be driven to reset until it springs into the plug hole opened inside the connector 11. This completes the installation and fixing of the pipe clamp 10. After the quick installation of the four pipe clamps 10 is completed, start the height adjustment component 4 through the control panel. The dual-axis motor 410 works and drives the rotating shaft 46 to rotate. Through the cooperation of the push plate 44 and the sliding support rod 42, the mounting plate 9 is adjusted to a suitable height.

[0039] Then, the electric push rod in the meshing assembly 7 is activated, pushing the push-pull plate 73 and the meshing tooth plates 71 on both sides to move backward, driving the two meshing gears 64 and the rotating shaft 610 to rotate. During this process, through the cooperation of the rotating plate 63, the hinge plate 62, the sliding bracket 65, the plug-in frame 67 and the connecting seat 11, the two pairs of corresponding pipe clamps 10 can be driven to move closer to each other, clamping the cooling water return pipe in the power plant from both the front and rear sides until the silicone gasket 12 is fully attached and fixed to the surface of the cooling water return pipe in the power plant. After the cooling water return pipe in the power plant is initially clamped, the height adjustment assembly 4 can be finely adjusted according to the actual monitoring needs to achieve a more precise vertical positioning of the clamping position. After confirming that the cooling water return pipe in the power plant is firmly clamped and does not shake, the subsequent monitoring operation for weld leakage of the cooling water return pipe in the power plant can be carried out.

[0040] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a height adjustment component (4), the upper end of the height adjustment component (4) is fixedly connected to the lower end of the mounting plate (9), the upper end of the mounting plate (9) is provided with a meshing component (7), the left and right ends of the meshing component (7) are respectively meshed with two clamping and fixing components (6), the lower ends of the two clamping and fixing components (6) are both provided on the upper end of the mounting plate (9), the two clamping and fixing components (6) are respectively inserted into four connecting seats (11) with insertion holes inside, the relatively close ends of the four connecting seats (11) are fixedly connected with pipe clamps (10), and the inner sides of the four pipe clamps (10) are provided with silicone gaskets (12).

2. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 1, characterized in that: The mounting plate (9) has two L-shaped limiting slide plates (3) fixedly connected to the left and right sides of its lower end. The four L-shaped limiting slide plates (3) are slidably connected to the four T-shaped columns (2) through the guide holes opened inside their lower ends. The lower ends of the four T-shaped columns (2) are fixedly connected to the base (1). The upper end of the base (1) is provided with a battery body (5), and the upper end of the mounting plate (9) is provided with a control panel body (8).

3. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 1, characterized in that: The engagement assembly (7) includes an electric push rod body (74), which is fixedly installed on the upper end of the mounting plate (9). A push-pull plate (73) is fixedly connected to the rear end of the electric push rod body (74). The push-pull plate (73) is slidably connected to two guide rods (75) through two guide holes opened inside it.

4. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 3, characterized in that: The front and rear ends of the two guide rods (75) are fixedly connected to the fixing plates (72), the lower ends of the four fixing plates (72) are fixedly connected to the mounting plate (9), and the left and right ends of the push-pull plate (73) are fixedly connected to the meshing tooth plates (71). The two meshing tooth plates (71) respectively mesh with the two clamping fixing components (6).

5. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 4, characterized in that: Both clamping and fixing components (6) include a fixing frame (61). Both fixing frames (61) are fixedly installed on the upper end of the mounting plate (9) through four fixing posts at their lower ends. Both fixing frames (61) are movably connected to two rotating shafts (610) through connecting holes opened inside their lower ends. Both rotating shafts (610) are fixedly connected to meshing gears (64) at their lower ends. Both meshing gears (64) mesh with two meshing tooth plates (71) respectively. Both rotating shafts (610) are fixedly connected to rotating plates (63) at their upper ends.

6. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 5, characterized in that: Both rotating plates (63) are movably connected to one end of the four hinge plates (62) by two hinge shafts at their upper ends. The other ends of the four hinge plates (62) are movably connected to the four sliding brackets (65) with another hinge shaft at their lower ends. The upper side of the four sliding brackets (65) is fixedly installed with a plug frame (67). The four plug frames (67) are plugged into the four connecting seats (11) with plug holes in their interiors by T-shaped pins (68). Springs (69) are sleeved on the four T-shaped pins (68).

7. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 6, characterized in that: The relatively distant ends of the four springs (69) are respectively fixedly connected to the relatively distant sides of the four T-shaped pins (68), and the relatively close ends of the four springs (69) are respectively fixedly connected to the four corresponding plug frames (67). The four sliding brackets (65) are each slidably connected to the four guide rods (66) through two guide holes opened inside their lower ends. The four guide rods (66) are divided into two groups, and their front and rear ends are respectively fixedly connected to the front and rear sides inside the two fixed frames (61).

8. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 1, characterized in that: The height adjustment component (4) includes a dual-axis motor (410), which is fixedly installed on the upper end of the base (1). The dual-axis motor (410) is fixedly connected to one end of two rotating shafts (49) respectively through two output shafts provided on it. The other end of each of the two rotating shafts (49) is fixedly connected to a bevel gear (47).

9. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 8, characterized in that: Two bevel gears (47) mesh with two bevel gears (411) respectively. Two bevel gears (411) are fixedly connected to two rotating shafts (46) respectively. The front and rear sides of the two rotating shafts (46) are fixedly connected to one end of four push plates (44) respectively. The other end of the four push plates (44) is movably connected to the front and rear sides of two sliding rods (42) respectively. The two sliding rods (42) are slidably connected to two guide rods (43) through guide holes opened inside their front and rear ends.

10. The auxiliary fitting fixture mechanism for monitoring weld leaks in cooling return water pipelines in power plants according to claim 9, characterized in that: The left and right ends of the two guide rods (43) are fixedly connected to the fixing plate (41), and the four fixing plates (41) are fixedly connected to the lower end of the mounting plate (9). The front and rear ends of the two rotating shafts (46) are movably connected to the fixing plate (45), and the lower ends of the four fixing plates (45) are fixedly connected to the base (1). The two rotating shafts (49) are movably connected to the fixing plate (48), and the lower ends of the two fixing plates (48) are fixedly connected to the base (1).

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