Ship pipeline testing equipment and method suitable for pipelines of multiple specifications

Abstract

The invention relates to the technical field of pipeline safety performance testing, in particular to ship pipeline testing equipment and method suitable for pipelines of multiple specifications, and the ship pipeline testing equipment comprises a bearing platform, a fixed shaft clamping mechanism and an exhaust mechanism; the bearing platform comprises a bearing frame and a rotating mechanism arranged in the middle of the bearing frame and used for controlling the bearing frame to be switched between the horizontal state and the vertical state. The fixed shaft clamping mechanism is arranged in the middle of the bearing frame and used for fixing the axes of pipelines of different specifications to the same straight line. The exhaust mechanism comprises an exhaust pipe and a self-closing structure, one end of the exhaust pipe is movably connected with the end of the bearing frame, the self-closing structure is arranged at the other end of the exhaust pipe, when the pipeline is in the exhaust stage, the self-closing structure is in an open state, and when the pipeline is in the pressurization stage, the self-closing structure is in a closed state; the bearing platform, the fixed shaft clamping mechanism and the exhaust mechanism are arranged, so that pressurized air is prevented from appearing in the pipeline, and the danger in the testing process is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline safety performance testing, in particular to a ship pipeline testing device applicable to pipelines of multiple specifications, and also to a testing method for the ship pipeline testing device applicable to pipelines of multiple specifications. Background Art

[0002] During the shipbuilding and maintenance process, the testing of the pipeline system is a crucial link, which is directly related to the safety and reliability of the ship's operation. However, the ship's pipeline system is complex and the pipeline specifications are diverse, ranging from small control lines to large-diameter fluid transmission pipelines. Traditional pipeline testing equipment is often designed for specific specifications of pipelines, lacks flexibility, and is difficult to adapt to the needs of multi-specification pipeline testing.

[0003] The patent with announcement number CN118817485B discloses a pipeline component performance test device, which is provided with two connecting mechanisms and a clamping structure. The clamping mechanism between the two connecting mechanisms can ensure that the pipeline component to be tested is clamped and fixed before the connecting structure is connected with the pipeline component to be tested, and the axis of the pipeline component to be tested is arranged in a collinear manner with the central axis of each mating part, so that the stability after the two mating parts are connected with the two connecting ends of the pipeline component to be tested can be ensured, and the test accuracy can be ensured, and the practicability is strong. In addition, the clamping mechanism can also adapt to pipeline components of different specifications, so that the axis of the pipeline components of each specification after being clamped and fixed is arranged in a collinear manner with the central axis of each mating part, and the adaptability is strong.

[0004] Although the above scheme can test pipes of different specifications, the pipes of different specifications in the above scheme are filled with water and exhausted in a horizontal state. As the water level rises in the pipe, the air in the pipe will flow from one end of the pipe to the other end. The air flow path is long and the exhaust efficiency is low. When test water flows out from the exhaust, it means that the pipe is full of test water, but the air that is not discharged from the pipe in time will form an air cavity. As the test water is continuously injected into the pipe, the water pressure in the pipe increases, and the residual air in the pipe will also be compressed. The air in a compressed state is very dangerous. There are installation risks during the test process and the drainage stage after the test is completed. Summary of the invention

[0005] In view of the above problems, a ship pipeline testing device suitable for pipelines of multiple specifications is provided. By setting a bearing platform, a fixed axis clamping mechanism and an exhaust mechanism, pressurized air is avoided in the pipeline, which significantly reduces the danger during the test.

[0006] In order to solve the problems of the prior art, the present invention provides a ship pipeline testing device suitable for pipelines of multiple specifications, comprising a bearing platform, a fixed-axis clamping mechanism and an exhaust mechanism; the bearing platform comprises a bearing frame and a rotating mechanism arranged in the middle of the bearing frame for controlling the bearing frame to switch between a horizontal state and a vertical state, and the bearing platform has a pressurizing end and an exhaust end; the fixed-axis clamping mechanism is arranged in the middle of the bearing frame to fix the axes of pipelines of different specifications on the same straight line; the exhaust mechanism is arranged at the exhaust end of the bearing frame, the exhaust mechanism comprises an exhaust pipe and a self-closing structure, one end of the exhaust pipe is movably connected to the end of the bearing frame and extends to the inside of the bearing frame, the self-closing structure is arranged at the other end of the exhaust pipe, when the pipeline is in the exhaust stage, the self-closing structure is in an open state, and when the pipeline is in the pressurizing stage, the self-closing structure is in a closed state.

[0007] Preferably, the self-closing structure includes a shell, a valve core and a valve body; the interior of the shell is divided into a diversion chamber, a partition chamber and a focusing chamber in sequence; the valve core is arranged in the diversion chamber; the valve body is arranged in the partition chamber; in the exhaust stage, the valve core and the valve body are separated to form a flow channel, and in the pressurization stage, the valve core and the valve body abut to close the flow channel.

[0008] Preferably, the self-closing structure also includes a control structure arranged in the flow-gathering chamber, the control structure includes a plurality of pull ropes, and the plurality of pull ropes are arranged in a circular array about the central axis of the valve body, and one end of the pull rope passes through the valve body and is connected to the valve core.

[0009] Preferably, the control structure further comprises a contraction structure arranged within the range of the flow channel, the contraction structure is connected to a plurality of pull ropes and is used to contract the pull ropes.

[0010] Preferably, the control structure further includes a plurality of reset structures, which are arranged in a ring array about the central axis of the valve body, and the reset structures are arranged inside the valve body, and the reset structures are used to keep the pull rope in a tensioned state.

[0011] Preferably, the self-closing structure also includes a locking structure arranged inside the valve body, the locking structure includes an insertion rod that is perpendicular to and passes through the axis of the valve body, the insertion rod is movably connected to the valve body, and a socket is opened on the valve core. During the pressurization stage, the socket and the insertion rod are in a coaxial state.

[0012] Preferably, the locking structure further comprises a control component, which is disposed at one end of the insertion rod and is used to apply a force to the insertion rod along the axis direction of the insertion rod.

[0013] Preferably, the fixed-axis clamping mechanism comprises four clamping plates, a plurality of clamping claws are evenly spaced on both sides of the clamping plates, the clamping claws on two adjacent clamping plates are staggered, and the two adjacent clamping plates are perpendicular to each other.

[0014] Preferably, the fixed-axis clamping mechanism also includes a flipping structure, which is connected to one of the clamping plates. Before placing the pipe on the bearing platform, the flipping structure flips the clamping plate connected thereto to one side of the bearing frame, so that the remaining three clamping plates form a bearing space with an opening facing upward.

[0015] A testing method for a ship pipeline testing device applicable to pipelines of multiple specifications is applied to a ship pipeline testing device applicable to pipelines of multiple specifications, comprising the following steps:

[0016] S1, the rotating mechanism adjusts the carrying frame to a horizontal state;

[0017] S2. Place the pipeline horizontally in the bearing frame, clamp the pipeline with the fixed axis clamping mechanism, and dock the exhaust mechanism with one end of the pipeline;

[0018] S3, the rotating mechanism drives the bearing frame to drive the pipeline to switch from a horizontal state to a vertical state, and the exhaust mechanism is at the upper end of the pipeline;

[0019] S4. Pressurized test water is injected into the pipeline from the bottom of the pipeline. The gas in the pipeline is squeezed by the water and discharged from the exhaust pipe. When the gas in the pipeline is completely discharged, the self-closing structure closes the exhaust pipe;

[0020] S5, the rotating mechanism switches the pipeline to a horizontal state for a pressure test;

[0021] S6. After the test is completed, the rotating mechanism switches the pipeline to a vertical state and discharges the test water in the pipeline.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention is provided with a bearing platform, a fixed-axis clamping mechanism and an exhaust mechanism. The rotating mechanism first adjusts the bearing frame to a horizontal state, so that the test personnel can place the pipeline horizontally in the bearing frame, and clamp the pipeline by the fixed-axis clamping mechanism, thereby ensuring the stable placement of the pipeline before the test. The pressure test is carried out in a horizontal state, which can ensure that the pressure difference at various places of the pipeline is small, thereby improving the accuracy of the test. The exhaust mechanism is docked with one end of the pipeline. As the rotating mechanism drives the bearing frame to drive the pipeline to rotate from a horizontal state to a vertical state, the exhaust mechanism is automatically located at the uppermost end of the pipeline. As pressurized water is continuously injected into the pipeline, the water level gradually rises until it enters the exhaust pipe. After being squeezed by the water, the gas in the pipeline can be discharged through the exhaust pipe, effectively preventing the formation of an air cavity in the pipeline, and being able to completely discharge the air in the pipeline, thereby avoiding the pressurized air in the pipeline, and significantly reducing the danger during the test.

[0024] 2. The present invention is provided with a shell, a valve core and a valve body. In the exhaust stage, the valve core and the valve body are naturally separated due to gravity to form a flow channel, thereby ensuring that the air can be discharged smoothly. At the same time, as the water level rises, water can also flow out through this flow channel. After entering the pressurization stage, as the water pressure in the pipeline gradually increases, the force exerted by the water flow on the valve core also increases accordingly. Therefore, the valve core moves toward the valve body and finally comes into close contact with the valve body to close the flow channel. The close contact between the valve core and the valve body is maintained under the continuous water pressure, thereby ensuring the effective closure of the channel, thereby realizing automatic regulation of the pipeline in the exhaust and pressurization stages, and the opening and closing of the channel can be achieved without external intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a three-dimensional ship pipeline testing device suitable for pipelines of multiple specifications. Figure 1 .

[0026] Figure 2 The present invention is a three-dimensional ship pipeline testing device suitable for pipelines of multiple specifications. Figure 2 .

[0027] Figure 3 The present invention is a top view of a bearing frame, a fixed axis clamping mechanism and an exhaust mechanism in a ship pipeline testing device suitable for pipelines of multiple specifications.

[0028] Figure 4 yes Figure 3 Stereoscopic cross-sectional view at AA in the middle.

[0029] Figure 5 yes Figure 4 A magnified partial view of point B in the middle.

[0030] Figure 6 The present invention is a stereoscopic diagram of a valve core, a valve body and a control structure in a ship pipeline testing device suitable for pipelines of multiple specifications.

[0031] Figure 7 The invention discloses an exploded view of a valve core and a reset structure in a ship pipeline testing device suitable for pipelines of multiple specifications.

[0032] Figure 8 It is a stereoscopic diagram of a valve core, a valve body and a locking structure in a ship pipeline testing device suitable for pipelines of multiple specifications of the present invention.

[0033] Fig. 9 It is a stereoscopic diagram of a bearing frame, a clamping plate and a flip structure in a ship pipeline testing device suitable for pipelines of multiple specifications of the present invention.

[0034] Fig.10It is a stereoscopic diagram of a clamping plate and a flipping structure in a ship pipeline testing device suitable for pipelines of multiple specifications of the present invention.

[0035] Fig.11 yes Fig.10 A magnified partial view of point C in the middle.

[0036] The numbers in the figure are: 1, pipeline; 2, bearing platform; 21, bearing frame; 22, rotating mechanism; 221, supporting frame; 222, rotating shaft; 223, rotating drive unit; 3, fixed axis clamping mechanism; 31, clamping plate; 311, clamping claw; 32, flip structure; 321, flip plate; 322, linear drive unit; 323, docking plate; 324, fixing rod; 325, first spring; 4, exhaust mechanism; 41, exhaust pipe ; 42. Self-closing structure; 421. Shell; 422. Valve core; 423. Valve body; 424. Pull rope; 425. Contraction structure; 4251. Fixed shaft; 4252. Unpowered fan; 426. Reset structure; 4261. First sleeve; 4262. Second spring; 4263. Reset top block; 427. Insert rod; 428. Control assembly; 4281. Second sleeve; 4282. Magnetic ring; 4283. Third spring. DETAILED DESCRIPTION

[0037] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Reference Figures 1 to 11 As shown: a ship pipeline testing equipment suitable for pipelines of multiple specifications, including a bearing platform 2, a fixed axis clamping mechanism 3 and an exhaust mechanism 4; the bearing platform 2 includes a bearing frame 21 and a rotating mechanism 22 arranged in the middle of the bearing frame 21 to control the switching of the bearing frame 21 between a horizontal state and a vertical state, and the bearing platform 2 has a pressurizing end and an exhaust end; the fixed axis clamping mechanism 3 is arranged in the middle of the bearing frame 21 to fix the axes of pipelines 1 of different specifications on the same straight line; the exhaust mechanism 4 is arranged at the exhaust end of the bearing frame 21, and the exhaust mechanism 4 includes an exhaust pipe 41 and a self-closing structure 42, one end of the exhaust pipe 41 is movably connected to the end of the bearing frame 21 and extends to the inside of the bearing frame 21, and the self-closing structure 42 is arranged at the other end of the exhaust pipe 41, when the pipeline 1 is in the exhaust stage, the self-closing structure 42 is in an open state, and when the pipeline 1 is in the pressurizing stage, the self-closing structure 42 is in a closed state.

[0039] Specifically, the rotating mechanism 22 includes two support frames 221, two rotating shafts 222 and a rotating drive unit 223. The two support frames 221 are arranged in parallel on both sides of the supporting frame 21. The two rotating shafts 222 are respectively arranged on the two support frames 221, and the two rotating shafts 222 are coaxially arranged. One end of the rotating shaft 222 is connected to the supporting frame 21, and the rotating drive unit 223 is connected to the rotating shaft 222.

[0040] Before testing the pipeline 1, the rotating mechanism 22 first adjusts the supporting frame 21 to a horizontal state, and then the tester places the pipeline 1 horizontally in the supporting frame 21 and clamps the pipeline 1 through the fixed-axis clamping mechanism 3. The exhaust mechanism 4 is docked with one end of the pipeline 1. Then the rotating mechanism 22 drives the supporting frame 21 to drive the pipeline 1 to rotate from a horizontal state to a vertical state. At this time, the exhaust mechanism 4 is located at the upper end of the pipeline 1. The pressure test water is injected from the bottom of the pipeline 1. The gas in the pipeline 1 is squeezed by the water and discharged through the exhaust pipe 41. When the gas in the pipeline 1 is completely discharged, the self-closing structure 42 closes the exhaust pipe 41, and the rotating mechanism 22 is activated again to switch the pipeline 1 back to a horizontal state for a pressure test. Performing a pressure test in a horizontal state can ensure that the pressure difference at various locations of the pipeline 1 is small, thereby improving the accuracy of the test. To ensure the accuracy of the test, after the test is completed, the rotating mechanism 22 switches the pipeline 1 to a vertical state again to discharge the test water in the pipeline 1. At this time, the pipeline 1 is in a vertical state, and the water in the pipeline 1 flows downward under the action of gravity. At the same time, the self-closing structure 42 opens the exhaust pipe 41, allowing external air to enter the pipeline 1 from the exhaust pipe 41, realizing synchronous drainage and air intake at both ends of the pipeline 1, so that the air pressure in the pipeline 1 is balanced with the outside, which is conducive to the complete discharge of the water in the pipeline 1. In the exhaust stage of the pipeline 1, since the exhaust pipe 41 is located at the uppermost end of the pipeline 1, as pressurized water is continuously injected into the pipeline 1, the water level gradually rises until it enters the exhaust pipe 41. In this process, the air in the pipeline 1 is completely squeezed out, effectively preventing the formation of an air cavity in the pipeline 1, thereby avoiding the appearance of pressurized air in the pipeline 1, and significantly reducing the danger during the test.

[0041] Reference Figure 2 , Figure 4 and Figure 5 As shown: the self-closing structure 42 includes a shell 421, a valve core 422 and a valve body 423; the interior of the shell 421 is divided into a diversion chamber, a partition chamber and a focusing chamber in sequence; the valve core 422 is arranged in the diversion chamber; the valve body 423 is arranged in the partition chamber; in the exhaust stage, the valve core 422 and the valve body 423 are separated to form a flow channel, and in the pressurization stage, the valve core 422 and the valve body 423 abut to close the flow channel.

[0042] In the exhaust stage, the valve core 422 and the valve body 423 are in a separated state, and a flow channel is formed between the two. Specifically, the valve core 422 is designed to be conical, and a conical valve cavity matching the shape of the valve core 422 is opened in the middle of the valve body 423. When the pipeline 1 is in the exhaust state, the valve core 422 is located below the valve body 423 due to gravity, and the two are naturally separated to form a flow path, allowing the air in the pipeline 1 to be discharged smoothly. As the water level rises, water also flows out through this flow channel. The water flow first touches the bottom of the valve core 422, then spreads to the surroundings, enters the flow channel, and enters the pressurization stage In the stage, as the water pressure in the pipeline 1 gradually increases, the force exerted by the water flow on the valve core 422 toward the valve body 423 increases, and the valve core 422 therefore moves toward the valve body 423 and finally comes into close contact with the valve body 423 to close the flow channel. This abutment state is maintained under the continuous action of the water pressure to ensure the effective closure of the channel. In addition, the increase in the water pressure in the pipeline 1 will further increase the interaction force between the valve core 422 and the valve body 423, thereby enhancing the sealing performance of the structure, thereby realizing automatic regulation of the pipeline 1 in the exhaust and pressurization stages, and the channel can be opened and closed without external intervention.

[0043] Reference Figure 5 and Figure 6 As shown: the self-closing structure 42 also includes a control structure arranged in the flow-gathering chamber, the control structure includes a plurality of pull ropes 424, and the plurality of pull ropes 424 are arranged in a circular array about the central axis of the valve body 423, and one end of the pull rope 424 passes through the valve body 423 and is connected to the valve core 422.

[0044] When water overflows from the exhaust pipe 41, the control structure is activated. At this time, multiple pull ropes 424 synchronously apply a pulling force to the valve core 422 toward the valve body 423. This synchronous action prompts the valve core 422 to move toward the valve body 423. As the pulling force continues to be applied, the valve core 422 gradually contacts the valve body 423 and finally fits tightly, effectively closing the flow channel. By actively pulling the valve core 422 to move, the time required for the valve core 422 to move toward the valve body 423 is shortened, thereby improving the response speed of the self-closing structure 42 and effectively reducing the waste of water resources.

[0045] Reference Figure 5 and Figure 6 As shown, the control structure also includes a contraction structure 425 arranged within the range of the flow channel. The contraction structure 425 is connected to a plurality of pull ropes 424 and is used to contract the pull ropes 424.

[0046] Specifically, the contraction structure 425 includes a fixed shaft 4251 , which is coaxially arranged with the valve body 423 , one end of the fixed shaft 4251 is connected to the valve body 423 , and a non-powered fan 4252 is coaxially arranged on the fixed shaft 4251 , and the non-powered fan 4252 is connected to a plurality of pull ropes 424 .

[0047] Since the contraction structure 425 is arranged within the range of the flow channel, when the water flows from the flow channel through the area of ​​the contraction structure 425, the water will come into contact with the unpowered fan 4252. This contact causes part of the kinetic energy of the water flow to be converted into mechanical energy for the rotation of the unpowered fan 4252. As the unpowered fan 4252 rotates, the unpowered fan 4252 pulls the pull rope 424 through the connection point with the pull rope 424 to move, causing the pull rope 424 to apply a pulling force to the valve core 422 toward the valve body 423. If the water flow velocity increases, the rotation speed of the unpowered fan 4252 will also increase accordingly. The pulling force of the unpowered fan 4252 on the pull rope 424 increases, causing the valve core 422 to move toward the valve body 423 faster, thereby realizing the conversion of the kinetic energy of the water into mechanical energy, and providing power for the contraction of the pull rope 424.

[0048] Reference Figure 5 and Figure 7 As shown: the control structure also includes a plurality of reset structures 426, which are arranged in a circular array about the central axis of the valve body 423, and the reset structures 426 are arranged inside the valve body 423, and the reset structures 426 are used to keep the pull rope 424 in a tensioned state.

[0049] Specifically, the reset structure 426 includes a first sleeve 4261, a second spring 4262 and a reset top block 4263. The first sleeve 4261 is fixed in the valve body 423, and the opening of the first sleeve 4261 faces the valve core 422. The second spring 4262 is arranged in the first sleeve 4261, the reset top block 4263 is slidably arranged in the first sleeve 4261, and one end of the reset top block 4263 is connected to the valve core 422.

[0050] When the flow channel is in an open state, the second spring 4262 in the reset mechanism applies a thrust to the reset top block 4263 toward the valve core 422, ensuring that a stable gap is maintained between the valve core 422 and the valve body 423. When the flow channel needs to be closed, the valve core 422 pushes the reset top block 4263 into the first sleeve 4261. During this process, the second spring 4262 is compressed and stores elastic potential energy. When the drainage operation is performed after the test is completed, the pull rope 424 no longer applies a force on the valve core 422 to keep it away from the valve body 423, and the flow channel is opened. When the valve body 423 is turned on, it becomes difficult to open the valve. At this time, the previously compressed second spring 4262 releases its stored elastic potential energy and applies a reverse thrust to the valve core 422 through the reset top block 4263, that is, a force away from the valve body 423. Since multiple reset structures 426 act at the same time, the valve core 422 is subjected to a steady and uniform thrust, ensuring that the valve core 422 can stably move away from the valve body 423 and smoothly open the flow channel, thereby automatically opening the exhaust pipe 41 during the drainage stage, thereby allowing external air to enter the pipe 1, avoiding the formation of negative pressure in the pipe 1 that affects the discharge of test water.

[0051] Reference Figure 8 As shown: the self-closing structure 42 also includes a locking structure arranged inside the valve body 423, the locking structure includes a plug rod 427 that is perpendicular to and passes through the axis of the valve body 423, the plug rod 427 is movably connected to the valve body 423, and a socket is opened on the valve core 422. During the pressurization stage, the socket and the plug rod 427 are in a coaxial state.

[0052] When the interior of the pipe 1 is completely filled with the test water, the valve core 422 and the valve body 423 will form a tight fit. Subsequently, the pipe 1 is transformed from a vertical posture to a horizontal posture by the rotating mechanism 22. During this process, the valve core 422 may be slightly separated from the valve body 423 due to external vibrations and other factors, resulting in a gap between the two, thereby causing an accidental leakage of the test water. To avoid this risk, the locking structure remains in a contracted state during the exhaust stage, that is, the plug rod 427 is completely accommodated in the valve body 423. When the valve core 42 After the valve body 423 is tightly fitted with the valve core 422, the locking structure is activated, the plug rod 427 moves along its axial direction toward the valve core 422, and is accurately inserted into the plug hole on the valve core 422, thereby realizing a fixed connection between the valve core 422 and the valve body 423. This connection state effectively prevents the valve core 422 from moving independently along its axis, ensuring that the valve core 422 and the valve body 423 are tightly fitted during the process of the pipeline 1 being rotated from a vertical state to a horizontal state, thereby preventing the test water from overflowing from the exhaust pipe 41 through the potential gap.

[0053] Reference Figure 8 As shown, the locking structure also includes a control component 428, which is disposed at one end of the insertion rod 427 and is used to apply a force to the insertion rod 427 along the axis direction of the insertion rod 427.

[0054] Specifically, the control component 428 includes a second sleeve 4281, two electromagnetic rings 4282 and a third spring 4283. The second sleeve 4281 is coaxially arranged with the insertion rod 427, and one end of the insertion rod 427 is slidably arranged in the second sleeve 4281. The two electromagnetic rings 4282 are respectively arranged at the end of the insertion rod 427 and inside the second sleeve 4281. The third spring 4283 is arranged between the two electromagnetic rings 4282, and the two ends of the third spring 4283 are respectively abutted against the end of the second sleeve 4281 and the end of the insertion rod 427.

[0055] During the exhaust phase, the magnetism of the two electromagnetic rings 4282 is adjusted to be opposite, thereby generating a force of mutual attraction, causing the insertion rod 427 to be smoothly pulled into the second sleeve 4281. During this process, the third spring 4283 is compressed and stores elastic potential energy, while also playing a role of physical spacing to prevent the two electromagnetic rings 4282 from directly contacting each other. When the valve core 422 is in close contact with the valve body 423, the magnetism of the two electromagnetic rings 4282 is adjusted to the same polarity, thereby inducing a force of mutual repulsion. This repulsive force, combined with the elastic potential energy released by the third spring 4283, jointly pushes the insertion rod 427 to move toward the valve core 422 along the axial direction until it is fully inserted. In the insertion hole on the valve core 422, at this time, the plug rod 427 is firmly connected to the valve core 422, which effectively prevents the independent movement of the valve core 422, and after the two electromagnetic rings 4282 lose their magnetism, the third spring 4283 can still maintain a continuous thrust on the plug rod 427 toward the valve core 422, ensuring that the plug rod 427 can still be stably maintained in the insertion hole when not affected by external magnetism, preventing it from accidentally sliding back into the second sleeve 4281, and through the magnetic adjustment of the electromagnetic ring 4282 and the release of the elastic potential energy of the third spring 4283, a smooth transition of the plug rod 427 between the locked and unlocked states is achieved, which significantly improves the stability and reliability of the locking.

[0056] Reference Figure 1 , Figure 2 and Fig. 9 As shown, the fixed axis clamping mechanism 3 includes four clamping plates 31, and a plurality of clamping claws 311 are evenly spaced on both sides of the clamping plates 31, the clamping claws 311 on two adjacent clamping plates 31 are staggered, and the two adjacent clamping plates 31 are perpendicular to each other.

[0057] The pipe 1 to be clamped is first placed horizontally in a space surrounded by four clamping plates 31. Subsequently, the four clamping plates 31 are started synchronously and move translationally in the direction toward the central axis of the pipe 1. When the four clamping plates 31 are in close contact with the circumferential wall of the pipe 1, the central axis of the pipe 1 is clamped and fixed at a preset height. This design ensures that no matter how the specifications of the pipe 1 change, as long as the four clamping plates 31 are in contact with the circumferential wall of the pipe 1, the central axis of the pipe 1 will be stably fixed at the same height, thereby ensuring that the exhaust mechanism 4 can achieve accurate and reliable docking with pipes 1 of different specifications, thereby improving the compatibility and operating efficiency of the system.

[0058] Reference Fig. 9 , Fig.10 and Fig.11As shown: the fixed-axis clamping mechanism 3 also includes a flipping structure 32, which is connected to one of the clamping plates 31. Before placing the pipe 1 on the carrying platform 2, the flipping structure 32 flips the clamping plate 31 connected thereto to one side of the carrying frame 21, so that the remaining three clamping plates 31 form a carrying space with an opening facing upward.

[0059] Specifically, the flip structure 32 includes a flip plate 321, a linear drive unit 322, a docking plate 323, at least two fixed rods 324 and a first spring 325. One end of the flip plate 321 is hinged to one side of the supporting frame 21. The linear drive unit 322 is arranged in the middle of the flip plate 321, and the linear drive unit 322 is connected to the clamping plate 31. The docking plate 323 is arranged on the other side of the supporting frame 21. A sliding groove is provided on the docking plate 323. The two fixed rods 324 are both slidably arranged in the sliding groove, and one end of the fixed rod 324 is movably connected to the flip plate 321. The first spring 325 is arranged in the middle of the two fixed rods 324, and the two ends of the first spring 325 are respectively abutted against the ends of the two fixed rods 324.

[0060] Before preparing to load the pipe 1, the tester first manually pushes the two fixing rods 324 into the sliding groove of the docking plate 323. During this process, the first spring 325 is compressed. Then, the tester operates the flip plate 321 to rotate around the hinge axis. The flip plate 321 drives the clamping plate 31 connected to it to move synchronously through the linear drive unit 322 until the clamping plate 31 rotates to one side of the carrier frame 21. At this time, the remaining three clamping plates 31 naturally form a space with an opening upward, which is convenient for the placement of the pipe 1. After the pipe 1 is placed in the space formed by the three clamping plates 31, the tester releases the force on the fixing rod 324, and the first spring 325 immediately releases the storage The elastic potential energy pushes the two fixing rods 324 to move along the slide groove toward the flip plate 321 until the two fixing rods 324 are inserted into the reserved holes of the flip plate 321 to lock the flip plate 321. At this time, the clamping plate 31 connected to the flip structure 32 is reset, and together with the other three clamping plates 31, it surrounds the pipe 1 to form a closed clamping space. Through the design of the flip structure 32, the fixed-axis clamping mechanism 3 forms an openable gap in the clamping space surrounded by the four clamping plates 31, so that the pipe 1 can be conveniently placed horizontally in the middle of the space surrounded by the four clamping plates 31, thereby greatly improving the efficiency and convenience of placing the pipe 1.

[0061] A testing method for a ship pipeline testing device applicable to pipelines of multiple specifications is applied to a ship pipeline testing device applicable to pipelines of multiple specifications, comprising the following steps:

[0062] S1, the rotating mechanism 22 adjusts the carrying frame 21 to a horizontal state,

[0063] S2, placing the pipeline 1 horizontally in the bearing frame 21, the fixed axis clamping mechanism 3 clamps the pipeline 1, and the exhaust mechanism 4 is connected to one end of the pipeline 1;

[0064] S3, the rotating mechanism 22 drives the carrying frame 21 to drive the pipeline 1 to switch from a horizontal state to a vertical state, and at this time, the exhaust mechanism 4 is at the upper end of the pipeline 1;

[0065] S4, the pressure test water is injected into the pipeline 1 from the bottom of the pipeline 1, and the gas in the pipeline 1 is squeezed by the water and discharged from the exhaust pipe 41. When the gas in the pipeline 1 is completely discharged, the self-closing structure 42 closes the exhaust pipe 41;

[0066] S5, the rotating mechanism 22 switches the pipeline 1 to a horizontal state and performs a pressure test;

[0067] S6. After the test is completed, the rotating mechanism 22 switches the pipeline 1 to a vertical state and discharges the test water in the pipeline 1.

[0068] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A ship pipeline testing equipment suitable for pipelines of multiple specifications, characterized in that: It comprises a bearing platform (2), a fixed axis clamping mechanism (3) and an exhaust mechanism (4); The carrying platform (2) comprises a carrying frame (21) and a rotating mechanism (22) arranged in the middle of the carrying frame (21) for controlling the carrying frame (21) to switch between a horizontal state and a vertical state. The carrying platform (2) has a pressurizing end and an exhaust end. The fixed axis clamping mechanism (3) is arranged in the middle of the bearing frame (21) to fix the axes of pipes (1) of different specifications on the same straight line; The exhaust mechanism (4) is arranged at the exhaust end of the carrier frame (21), and comprises an exhaust pipe (41) and a self-closing structure (42). One end of the exhaust pipe (41) is movably connected to the end of the carrier frame (21) and extends into the interior of the carrier frame (21). The self-closing structure (42) is arranged at the other end of the exhaust pipe (41). When the pipeline (1) is in the exhaust stage, the self-closing structure (42) is in an open state. When the pipeline (1) is in the pressurization stage, the self-closing structure (42) is in a closed state.

2. A ship pipeline testing device suitable for pipelines of multiple specifications according to claim 1, characterized in that: The self-closing structure (42) comprises a housing (421), a valve core (422) and a valve body (423); The interior of the shell (421) is divided into a flow-dividing chamber, a partition chamber and a flow-collecting chamber in sequence; The valve core (422) is arranged in the diversion chamber; The valve body (423) is arranged in the partition cavity; In the exhaust phase, the valve core (422) and the valve body (423) are separated to form a flow channel, and in the pressurization phase, the valve core (422) and the valve body (423) are in contact to close the flow channel.

3. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 2 is characterized in that: The self-closing structure (42) also includes a control structure arranged in the flow-gathering chamber, and the control structure includes a plurality of pull ropes (424). The plurality of pull ropes (424) are arranged in a circular array about the central axis of the valve body (423), and one end of the pull rope (424) passes through the valve body (423) and is connected to the valve core (422).

4. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 3 is characterized in that: The control structure also includes a contraction structure (425) arranged within the range of the flow channel. The contraction structure (425) is connected to a plurality of pull ropes (424) and is used to contract the pull ropes (424).

5. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 3 is characterized in that: The control structure also includes a plurality of reset structures (426), which are arranged in a circular array about the central axis of the valve body (423), and the reset structures (426) are arranged inside the valve body (423). The reset structures (426) are used to keep the pull rope (424) in a tensioned state.

6. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 2, characterized in that: The self-closing structure (42) further includes a locking structure arranged inside the valve body (423), the locking structure including an insertion rod (427) perpendicular to and passing through the axis of the valve body (423), the insertion rod (427) being movably connected to the valve body (423), and an insertion hole being provided on the valve core (422), and in the pressurization stage, the insertion hole and the insertion rod (427) are in a coaxial state.

7. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 6, characterized in that: The locking structure further comprises a control component (428), which is arranged at one end of the insertion rod (427) and is used to apply a force to the insertion rod (427) along the axis direction of the insertion rod (427).

8. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 1, characterized in that: The fixed axis clamping mechanism (3) comprises four clamping plates (31), a plurality of clamping claws (311) are evenly spaced on both sides of the clamping plates (31), the clamping claws (311) on two adjacent clamping plates (31) are staggered, and the two adjacent clamping plates (31) are perpendicular to each other.

9. The ship pipeline testing equipment applicable to pipelines of multiple specifications according to claim 8, characterized in that: The fixed-axis clamping mechanism (3) further comprises a flipping structure (32), which is connected to one of the clamping plates (31). Before the pipeline (1) is placed on the bearing platform (2), the flipping structure (32) flips the clamping plate (31) connected thereto to one side of the bearing frame (21), so that the remaining three clamping plates (31) form a bearing space with an opening facing upward.

10. A testing method for a ship pipeline testing device applicable to pipelines of multiple specifications, applied to a ship pipeline testing device applicable to pipelines of multiple specifications as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the rotating mechanism (22) adjusts the carrying frame (21) to a horizontal state; S2, placing the pipeline (1) horizontally in the bearing frame (21), clamping the pipeline (1) with the fixed axis clamping mechanism (3), and docking the exhaust mechanism (4) with one end of the pipeline (1); S3, the rotating mechanism (22) drives the bearing frame (21) to drive the pipeline (1) to switch from a horizontal state to a vertical state, and at this time, the exhaust mechanism (4) is at the upper end of the pipeline (1); S4. Water for the pressure test is injected into the pipeline (1) from the bottom of the pipeline (1). The gas in the pipeline (1) is squeezed by the water and discharged from the exhaust pipe (41). When the gas in the pipeline (1) is completely discharged, the self-closing structure (42) closes the exhaust pipe (41); S5, the rotating mechanism (22) switches the pipeline (1) to a horizontal state and performs a pressure test; S6. After the test is completed, the rotating mechanism (22) switches the pipeline (1) to a vertical state and discharges the test water in the pipeline (1).

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