Process test method for verifying influence of system pipeline installation on equipment state

Abstract

The invention provides a process test method for verifying the influence of system pipeline installation on an equipment state in the field of pipelines. The method comprises the following steps: determining process control points from equipment installation to system operation by analyzing ship equipment use conditions, including equipment installation perpendicularity, equipment leg shock absorber height, equipment inlet and outlet shock absorption connecting pipe length and the like, and combining an installation process stage from equipment installation to system operation; the method comprises the following steps: identifying working condition points which are easy to cause equipment installation state change due to assembly stress and residual stress in a system pipeline closure stage and a system tightness test stage, and carrying out a process test technical scheme design and a test bed design for verifying the influence of system pipeline installation on the equipment state; through repeated dismounting and debugging verification tests, comparison verification of different working conditions is realized, formulation of a process control method for long-period state stability of the equipment is supported, and the process problem of how to ensure long-period state stability or state offset level controllability after the equipment is installed is solved.

Description

Technical Field

[0001] The invention relates to pipelines in the field of ships, and in particular to a process test method for verifying the influence of system pipeline installation on equipment status. Background Art

[0002] The safety and comfort of ships are important evaluation indicators for measuring the construction quality level of shipyards. In order to ensure the normal operation of ships and the stable operation of various system functions, the installation status of slipways and moorings during the construction phase of various system equipment in the ship should be within a long-term good maintenance range. In particular, attention should be paid to the deviation of the equipment installation status caused by assembly stress during the construction of system pipelines after the equipment is installed.

[0003] According to engineering experience, the status of the equipment and the shock absorbers under its feet after the construction is completed according to the drawings and before the system piping is installed, the positioning dimensions in the drawings generally do not change significantly. However, the piping closing and system tightness test during the system piping installation process generally easily lead to changes in the installation status of the equipment and the shock absorbers under its feet and the shock absorbing pipes connected to the inlet and outlet. The status changes can be monitored during the construction process of the shipyard, but considering the progress requirements of the contract nodes, it is difficult to carry out repeated disassembly and commissioning test verification work at the construction site, resulting in us only knowing the "problem", but not knowing or lacking further decomposition of the problem, clarifying the specific process of the problem and the degree of impact test verification method. It is necessary to develop a process test bench and test method for verifying the impact of system piping installation on equipment status, to ensure that the equipment is stable for a long period of time after installation or the state deviation level is controllable, to ensure the safety and stability of the operation of various ship systems. Summary of the invention

[0004] In order to effectively identify the process control points for long-term stability of ship equipment after installation, ensure that the performance of equipment, shock absorbers, and shock-absorbing pipes during use meets system requirements, and achieve the safety and stability of the operation of various ship systems, the present invention provides a process test method for verifying the impact of system pipeline installation on equipment status. Based on the experience of ship engineering construction, the invention identifies that the verticality of equipment installation, the height value of equipment shock absorbers, and the length value of inlet and outlet shock-absorbing pipes can be used as the basis for evaluating the long-term stability of equipment after installation, and sets two system pipeline closing methods and two tightness test methods through the test bench. Based on the actual process procedures at the construction site, the process states of each stage after the installation of equipment, shock absorbers, and shock-absorbing pipes, after the pipelines are closed, and after the tightness test are reproduced on the test bench. By carrying out repeated disassembly and commissioning verification tests, the process problem of how to ensure the long-term stability of the equipment after installation or the controllable state offset level is solved, and a long-term state stability process control method from the installation of ship equipment to the operation of the system is obtained.

[0005] The solution adopted by the present invention to solve the technical problem is: A process test bench for verifying the influence of system piping installation on equipment status includes: a pressure tank, a closed pipe section at the far pump end, a circulating water pump, an equipment vibration damper, a vibration damping pipe, a closed pipe section at the near pump end, a tightness pressure test point at the near pump end, system piping and accessories, and a tightness pressure test point at the far pump end; the pressure tank mainly provides the required pressure for system operation; the circulating water pump mainly provides power for system operation to ensure that the system can operate for a long period of time; the equipment vibration damper mainly bears the weight of the circulating water pump, reduces the transmission of machine foot vibration to the base during equipment operation, and achieves the purpose of vibration reduction; the vibration damping pipe mainly The purpose is to reduce the transmission of inlet and outlet flange vibration to the outer wall of the pipeline during equipment operation and achieve the purpose of vibration reduction; the far pump end closing pipe section is mainly to establish a process test point for the final closing of the system pipeline at a position far away from the equipment, which is used to determine the influence of the assembly stress generated by the closing of the pipeline at a position far away from the equipment on the installation status of the circulating water pump, equipment shock absorber, and vibration reduction pipe; the near pump end closing pipe section is mainly to establish a process test point for the final closing of the system pipeline at a position close to the equipment, which is used to determine the assembly stress generated by the closing of the pipeline at a position close to the equipment. The influence of stress on the installation status of circulating water pumps, equipment shock absorbers, and shock-absorbing pipes; the tightness pressure test point near the pump end is mainly to establish a system piping tightness test at a location close to the equipment, which is used to determine the influence of piping deformation caused by the system piping tightness test at a location close to the equipment on the installation status of circulating water pumps, equipment shock absorbers, and shock-absorbing pipes; the system piping and accessories are mainly valves, pipe sections, and piping supports necessary to ensure the operation of the system; the tightness pressure test point far from the pump end is mainly to establish a system piping tightness test at a location far from the equipment, which is used to determine the tightness of the piping at the location far from the equipment. The influence of pipeline deformation caused by the system pipeline tightness test at a location far away from the equipment on the installation status of the circulating water pump, equipment vibration damper and vibration damping pipe; wherein, a circulating water pump is connected to the side of the pressure tank, and the equipment vibration damper and vibration damping pipe are arranged at the bottom of the circulating water pump. The end of the circulating water pump is connected to the tightness pressure testing point at the near pump end through the closed pipe section at the near pump end, and the tightness pressure testing point at the near pump end is connected to the closed pipe section at the far pump end through the system pipeline and accessories; a far pump end tightness pressure testing point is arranged at the bottom of the pressure tank, and the far pump end tightness pressure testing point is connected to the closed pipe section at the far pump end through the system pipeline and accessories.

[0006] In order to further solve the technical problem to be solved by the present invention, in a process test method for verifying the influence of system pipeline installation on equipment status provided by the present invention, according to the experience of ship engineering construction, the verticality of equipment installation, the height value of equipment shock absorber, and the length value of inlet and outlet shock absorbing pipe can be identified as the basis for evaluating the long-term state stability of equipment after installation, and two system pipeline closing methods and two tightness test methods are set through the test bench, including the closing pipe section near the pump end, the closing pipe section far from the pump end, and the tightness pressure point near the pump end and the tightness pressure point far from the pump end. Based on the actual process procedures at the construction site, the process states of each stage after the equipment shock absorber and shock absorbing pipe are installed, after the pipeline is closed, and after the tightness test are reproduced on the test bench; the following steps are included: 1. Install the circulating water pump and equipment shock absorber according to the equipment drawing requirements, and adjust the circulating water pump to the positioning size tolerance required by the drawing by adjusting the gasket, and record the installation verticality value a of the circulating water pump and the height value b of the equipment shock absorber after installation; 2. Install the system pipelines, accessories and vibration reduction pipes according to the system pipeline drawings, and record the length c of the vibration reduction pipes after installation; 3. The closed pipe section near the pump end is used as the process test point for the impact of the first type of pipeline installation on the equipment status. The pipe section is closed after the system pipelines and accessories are installed. During the closing process, the pipeline support is adjusted to ensure that the deviation of the flanges at both ends of the closed pipe section and the flanges to be connected meets the technical requirement of no more than 1mm. Then the closed pipe section is installed. After installation, the verticality of the circulating water pump, the height value of the equipment vibration damper after installation, and the length of the vibration damping pipe connection are measured, and the measurement results a1, b1, c1 are recorded; 4. The closed pipe section at the far pump end is used as the process test point for the influence of the second type of pipeline installation on the equipment status. The pipe section is closed after the system pipelines and accessories are installed. During the closing process, the pipeline support is adjusted to ensure that the deviation of the flanges at both ends of the closed pipe section and the flanges to be connected meets the technical requirement of no more than 1mm. Then the closed pipe section is installed. After installation, the verticality of the circulating water pump, the height value of the equipment vibration damper after installation, and the length of the vibration damping pipe connection are measured, and the measurement results a2, b2, and c2 are recorded; 5. The tightness pressure test point near the pump end is used as the process test point for the influence of the third type of pipeline installation on the equipment status. After the system pipeline is installed, the entire pipeline is tested for tightness, including the circulating water pump. The tightness test pressure is 0.5Mpa. After the tightness test, measure the verticality of the circulating water pump, the height value of the equipment shock absorber after installation, and the length of the shock absorber pipe, and record the measurement results a3, b3, c3; 6. Take the tightness test point at the far pump end as the fourth process test point for the impact of pipeline installation on the equipment status. After the system pipeline is installed, conduct a tightness test on the entire pipeline, including the circulating water pump. The tightness test pressure is 0.5Mpa. After the tightness test, measure the verticality of the circulating water pump, the height value of the equipment shock absorber after installation, and the length of the shock absorber pipe, and record the measurement results a4, b4, c4; 7. After the four process tests are completed, by comparing the changes in the verticality of the circulating water pump at each stage, the height value of the equipment shock absorber after installation, and the length value of the shock absorber pipe, the impact of the pipeline installation on the equipment status is determined, and the research work on the process method of maintaining the long-term installation status of the support equipment and system is carried out.

[0007] Positive effect: the present invention analyzes the use conditions of ship equipment, determines that changes or deviations in the equipment installation state may lead to reduced safety and reliability during system operation, and determines the process control points from equipment installation to system operation, including equipment installation verticality, equipment foot shock absorber height, and equipment inlet and outlet shock absorber pipe length, etc., and combines the installation process stage from equipment installation to system operation to identify the system pipeline closing stage and system tightness test stage as operating points where the equipment installation state is easily changed due to assembly stress and residual stress, and uses this as a starting point to carry out a process test technical solution design and test bench design for verifying the impact of system pipeline installation on equipment status, and through repeated disassembly and commissioning verification tests, realizes comparative verification of different working conditions, supports the formulation of a process control method for long-term state stability of equipment, and solves the process problem of how to ensure long-term state stability or controllable state offset magnitude after equipment installation. It is suitable for application as a process test method for verifying the impact of system pipeline installation on equipment status. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The description of the present invention is given for the purpose of example and description, and is not exhaustive or limits the present invention to the disclosed form. Many modifications and changes are obvious to ordinary technicians in this field. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and enable ordinary technicians in this field to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0009] Figure 1A schematic diagram of a process test bench for verifying the impact of system piping installation on equipment status; Figure 2 This is a process test diagram for verifying the impact of system pipeline installation on equipment status. (Please add technical feature marks by the inventor) In the figure, 1. pressure tank, 2. closed pipe section at the far pump end, 3. circulating water pump, 4. equipment shock absorber, 5. vibration reduction connecting pipe, 6. closed pipe section near the pump end, 7. tightness testing point near the pump end, 8. system pipelines and accessories, 9. tightness testing point at the far pump end. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0011] As shown in the figure, a process test bench for verifying the influence of system pipeline installation on equipment status includes: a pressure tank 1, a closed pipe section at the far pump end 2, a circulating water pump 3, an equipment vibration damper 4, a vibration damping pipe 5, a closed pipe section at the near pump end 6, a tightness pressure point at the near pump end 7, system pipelines and accessories 8 and a tightness pressure point at the far pump end 9; Pressure tank 1 mainly provides the required pressure for system operation; The circulating water pump 3 mainly provides power for the system operation to ensure that the system can operate for a long period of time; The equipment vibration damper 4 mainly bears the weight of the circulating water pump 3, reduces the transmission of the vibration of the machine foot to the base during the operation of the equipment, and achieves the purpose of vibration reduction; The vibration reduction pipe 5 is mainly used to reduce the transmission of the inlet and outlet flange vibration to the outer wall of the pipeline during the operation of the equipment, so as to achieve the purpose of vibration reduction; The far-pump end closing pipe section 2 is mainly used to establish a process test point for the final closing of the system pipeline at a location far away from the equipment, and is used to determine the influence of the assembly stress generated by the closing of the pipeline at a location far away from the equipment on the installation status of the circulating water pump 3, the equipment shock absorber 4, and the shock absorbing pipe 5; The pump-end closing pipe section 6 is mainly used to establish a process test point for the final closing of the system pipeline at a position close to the equipment, and is used to determine the influence of the assembly stress generated by the closing of the pipeline at a position close to the equipment on the installation status of the circulating water pump 3, the equipment vibration damper 4, and the vibration damping pipe 5; The tightness test point 7 near the pump end is mainly used to establish a system pipeline tightness test at a position close to the equipment, which is used to determine the influence of pipeline deformation caused by the system pipeline tightness test at a position close to the equipment on the installation status of the circulating water pump 3, the equipment shock absorber 4, and the shock absorption pipe 5; System piping and accessories 8 mainly include valves, pipe sections, and pipeline supports necessary to ensure system operation; The remote pump end tightness test point 9 is mainly used to establish a system pipeline tightness test at a location far away from the equipment, and is used to determine the influence of pipeline deformation caused by the system pipeline tightness test at a location far away from the equipment on the installation status of the circulating water pump 3, the equipment shock absorber 4, and the shock absorbing pipe 5; Among them, a circulating water pump 3 is connected to the side of the pressure tank 1, and an equipment vibration damper 4 and a vibration damping pipe 5 are arranged at the bottom of the circulating water pump 3. The end of the circulating water pump 3 is connected to the near-pump-end tightness pressure point 7 through a near-pump-end closing pipe section 6, and the near-pump-end tightness pressure point 7 is connected to the far-pump-end closing pipe section 2 through a system pipeline and accessories 8; a far-pump-end tightness pressure point 9 is arranged at the bottom of the pressure tank 1, and the far-pump-end tightness pressure point 9 is connected to the far-pump-end closing pipe section 2 through a system pipeline and accessories 8.

[0012] In this embodiment, two types of system pipeline closing sections and two types of tightness test pressure points were developed. Based on the actual process procedures at the construction site, the process states of each stage after the installation of equipment, shock absorbers, and vibration reduction pipes, after the pipelines were closed, and after the tightness test were reproduced on the test bench. Through repeated disassembly and assembly and commissioning verification tests, comparative verification of different working conditions was achieved, providing data support for the formulation of long-term state-stable process control methods.

[0013] A process test method for verifying the influence of system piping installation on equipment status. According to the experience of ship engineering construction, the verticality of equipment installation, the height value of equipment vibration damper, and the length value of inlet and outlet vibration damping pipe can be identified as the basis for evaluating the long-term stability of the equipment after installation. Two system piping closing methods and two tightness test methods are set through a test bench, including a closing pipe section 6 near the pump end, a closing pipe section 2 far from the pump end, and a tightness pressure point 7 near the pump end and a tightness pressure point 9 far from the pump end. Based on the actual process procedures at the construction site, the process status of each stage after the equipment vibration damper and vibration damping pipe are installed, after the piping is closed, and after the tightness test is reproduced on the test bench; the following steps are included: 1. Install the circulating water pump 3 and the equipment shock absorber 4 according to the requirements of the equipment drawings, and adjust the circulating water pump 3 to the positioning size tolerance required by the drawings by adjusting the gaskets, and record the installation verticality value a of the circulating water pump 3 and the height value b of the equipment shock absorber 4 after installation; Specifically, after the circulating water pump is positioned according to the requirements of the drawing, the verticality of the equipment is measured to be 1.5mm / m, the height of the shock absorber 4 of the BE300 type equipment on the machine foot is 85mm, the inlet and outlet shock absorber pipes of the equipment are installed, and the length of the balanced shock absorber pipe 5 is measured to be 300mm, and the ambient temperature during the measurement is recorded; Specifically, according to the system schematic diagram, the pressure tank positioning coordinates are initially marked, the size of the pressure tank lower base adjustment pad is adjusted, and the height of the inlet and outlet pipeline flanges from the reference plane is measured to ensure the subsequent docking with the system pipeline; 2. Install the system pipelines and accessories 8 and the vibration-damping pipe 5 according to the requirements of the system pipeline drawings, and record the length c of the vibration-damping pipe 5 after installation; Specifically, according to the system pipeline design drawings, install the inlet and outlet pipe sections, valves, filters, pipeline supports, etc. of the circulating water pump 3. During the installation process, ensure that the height positioning deviation of the pipelines in the same direction is no more than 2mm, and the pipeline bending radius is no less than 2.5 times the pipeline diameter; 3. The closed pipe section 6 near the pump end is used as the process test point for the influence of the first type of pipeline installation on the equipment status. The pipe section is closed after the system pipelines and accessories 8 are installed. During the closing process, the pipeline support is first adjusted to ensure that the deviation of the flanges at both ends of the closed pipe section and the flanges to be connected meets the technical requirement of no more than 1mm. Then the closed pipe section is installed. After installation, the verticality of the circulating water pump 3, the height value of the equipment vibration damper 4 after installation, and the length value of the vibration damping pipe 5 are measured, and the measurement results a1, b1, c1 are recorded; Specifically, according to the test verification working condition setting plan, first establish the conditions for closing the pipeline near the pump end. Except for the closing pipe section 6 near the pump end, the remaining pipelines and accessories are installed according to the requirements of the drawings. After installation, measure the flange spacing and parallelism on both sides of the closing pipe section 6 near the pump end, where the spacing deviation is not greater than 1mm, and the parallelism deviation is not greater than 2mm / m. After qualified adjustment, install the closing pipe section near the pump end. After installation, measure the verticality value, the height value of the BE300 shock absorber of the machine foot, and the length value of the balanced shock-absorbing pipe 5 at the inlet and outlet of the installed equipment, which are a1, b1, and c1 respectively; 4. The closed pipe section 9 at the far pump end is used as the process test point for the influence of the second type of pipeline installation on the equipment status. The pipe section is closed after the system pipelines and accessories 8 are installed. During the closing process, the pipeline support is adjusted to ensure that the deviation of the flanges at both ends of the closed pipe section and the flanges to be connected meets the technical requirement of no more than 1mm. Then the closed pipe section is installed. After installation, the verticality of the circulating water pump 3, the height value of the equipment vibration damper 4 after installation, and the length value of the vibration damping pipe 5 are measured, and the measurement results a2, b2, and c2 are recorded; Specifically, according to the test verification working condition setting plan, the closing conditions of the far pump end pipeline are established again. Except for the far pump end closing pipe section 2, the rest of the pipelines and accessories are installed according to the requirements of the drawings. After installation, the flange spacing and parallelism on both sides of the far pump end closing pipe section 2 are measured, where the spacing deviation is not greater than 1mm, and the parallelism deviation is not greater than 2mm / m. After qualified adjustment, the far pump end closing pipe section is installed. After installation, the verticality value, the height value of the BE300 shock absorber of the machine foot, and the length values ​​of the balanced shock-absorbing pipe 5 at the inlet and outlet of the installed equipment are measured, which are a2, b2, and c2 respectively; Specifically, by comparing the changes of a1, b1, c1 and a2, b2, c2 relative to the initial installation state of 1.5mm / m, 85mm, and 300mm, the test verification condition with a small change value is the process control method with a long-term stable state from the installation of the equipment to the operation of the system; 5. Take the tightness pressure test point 7 near the pump end as the process test point for the influence of the third type of pipeline installation on the equipment status. After the system pipeline is installed, the pipeline is tested for tightness as a whole, including the circulating water pump 3. The tightness test pressure is 0.5Mpa. After the tightness test, measure the verticality of the circulating water pump 3, the height value of the equipment vibration damper 4 after installation, and the length value of the vibration damping pipe 5, and record the measurement results a3, b3, c3; Specifically, according to the test verification working condition setting plan, the tightness pressure test conditions near the pump end are established again, and the pipelines and accessories are installed according to the requirements of the drawings. After installation, the 0.5Mpa tightness test medium is connected to the tightness pressure test point 7 near the pump end. After the pressure stabilizes for 10 minutes, the verticality value of the machine, the height value of the BE300 shock absorber of the machine foot, and the length value of the balanced shock absorption pipe 5 at the inlet and outlet of the installed equipment are measured, which are a3, b3, and c3 respectively; 6. Take the far pump end tightness pressure test point 9 as the fourth process test point for the influence of pipeline installation on the equipment status. After the system pipeline is installed, the pipeline is tested for tightness as a whole, including the circulating water pump 3. The tightness test pressure is 0.5Mpa. After the tightness test, measure the verticality of the circulating water pump 3, the height value of the equipment shock absorber 4 after installation, and the length value of the shock absorber pipe 5, and record the measurement results a4, b4, c4; Specifically, according to the test verification working condition setting plan, the remote pump end tightness pressure test conditions are established again, and the pipelines and accessories are installed according to the requirements of the drawings. After installation, the 0.5Mpa tightness test medium is connected to the remote pump end tightness pressure point 9. After the pressure stabilizes for 10 minutes, the verticality value of the standby, the height value of the BE300 shock absorber of the machine foot, and the length value of the balanced shock absorption pipe at the inlet and outlet of the installed equipment are measured, which are a4, b4, and c4 respectively; 7. After the four process tests are completed, by comparing the changes in the verticality of the circulating water pump 3, the height value of the equipment vibration damper 4 after installation, and the length value of the vibration damping pipe 5 at each stage, the influence of the pipeline installation on the equipment status is judged, as a support for the research work on the process method of maintaining the long-term installation status of the equipment and system; Specifically, by comparing the changes of a3, b3, c3 and a4, b4, c4 relative to the initial installation state of 1.5mm / m, 85mm, and 300mm, the test verification condition with a small change value is the process control method with long-term stable state from the installation of the equipment to the operation of the system.

[0014] The features of this embodiment are as follows: This embodiment analyzes the use conditions of ship equipment to determine that changes or offsets in the equipment installation status may cause reduced safety and reliability during system operation, and determines the process control points from equipment installation to system operation, including the verticality of equipment installation, the height of equipment machine foot shock absorbers, and the length of equipment inlet and outlet shock absorber pipes. Combined with the installation process stages from equipment installation to system operation, the system piping closing stage and the system tightness test stage are identified as operating points where the equipment installation status is easily changed due to assembly stress and residual stress. Based on this, a process test technical solution design and a test bench design for verifying the impact of system piping installation on equipment status are carried out. Repeated disassembly and commissioning verification tests are carried out to achieve comparative verification of different working conditions, support the formulation of a process control method for long-term state stability of equipment, and solve the process problem of how to ensure long-term state stability or controllable state offset magnitude after equipment installation.

[0015] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A process test bench for verifying the influence of system pipeline installation on equipment status, characterized by: include: Pressure tank (1), closed pipe section at the far pump end (2), circulating water pump (3), equipment vibration damper (4), vibration damping pipe (5), closed pipe section at the near pump end (6), tightness testing point at the near pump end (7), system pipelines and accessories (8) and tightness testing point at the far pump end (9); The pressure tank (1) mainly provides the required pressure for system operation; The circulating water pump (3) mainly provides power for the system operation, ensuring that the system can operate for a long period of time; The equipment vibration damper (4) mainly bears the weight of the circulating water pump (3) and reduces the transmission of the vibration of the machine foot to the base during the operation of the equipment, thereby achieving the purpose of vibration reduction; The vibration reduction pipe (5) is mainly used to reduce the transmission of the inlet and outlet flange vibration to the outer wall of the pipeline during the operation of the equipment, thereby achieving the purpose of vibration reduction; The far-pump end closing pipe section (2) is mainly used to establish a process test point for the final closing of the system pipeline at a location far away from the equipment, and is used to determine the influence of the assembly stress generated by the closing of the pipeline at a location far away from the equipment on the installation state of the circulating water pump (3), the equipment vibration damper (4), and the vibration damping pipe (5); The pump-end closing pipe section (6) is mainly used to establish a process test point for the final closing of the system pipeline at a position close to the equipment, and is used to determine the influence of the assembly stress generated by the closing of the pipeline at a position close to the equipment on the installation state of the circulating water pump (3), the equipment vibration damper (4), and the vibration damping pipe (5); The close-to-pump end tightness test point (7) is mainly used to establish a system pipeline tightness test at a location close to the equipment, and is used to determine the influence of pipeline deformation generated by the close-to-equipment system pipeline tightness test on the installation status of the circulating water pump (3), the equipment vibration damper (4), and the vibration damping pipe (5); System piping and accessories (8) mainly include valves, pipe sections, and pipe supports necessary to ensure system operation; The remote pump end tightness pressure test point (9) is mainly used to establish a system pipeline tightness test at a location far away from the equipment, and is used to determine the influence of pipeline deformation caused by the system pipeline tightness test at a location far away from the equipment on the installation status of the circulating water pump (3), the equipment vibration damper (4), and the vibration damping pipe (5); A circulating water pump (3) is connected to the side of the pressure tank (1), and an equipment vibration damper (4) and a vibration damping pipe (5) are provided at the bottom of the circulating water pump (3). The end of the circulating water pump (3) is connected to a near-pump end tightness pressure point (7) through a near-pump end closing pipe section (6), and the near-pump end tightness pressure point (7) is connected to a far-pump end closing pipe section (2) through a system pipeline and accessories (8). A far-pump end tightness pressure point (9) is provided at the bottom of the pressure tank (1), and the far-pump end tightness pressure point (9) is connected to the far-pump end closing pipe section (2) through a system pipeline and accessories (8).

2. A process test method for verifying the effect of system piping installation on equipment status, characterized by: Based on the experience of shipbuilding engineering construction, it is identified that the verticality of equipment installation, the height value of equipment vibration damper, and the length value of inlet and outlet vibration damping pipe can be used as the basis for evaluating the long-term stability of the equipment after installation. Two system pipeline closing methods and two tightness test methods are set up through the test bench, including the closing pipe section near the pump end (6), the closing pipe section far from the pump end (2), and the tightness pressure point near the pump end (7), and the tightness pressure point far from the pump end (9). Based on the actual process procedures at the construction site, the process conditions of each stage after the installation of the equipment vibration damper (4) and the vibration damping pipe (5), after the pipeline is closed, and after the tightness test are reproduced on the test bench; The following steps are involved: Step 1. Install the circulating water pump (3) and the equipment shock absorber (4) according to the equipment drawing requirements, and adjust the circulating water pump 3 to the positioning size tolerance required by the drawing by adjusting the gasket, and record the installation verticality value a of the circulating water pump 3 and the height value b of the equipment shock absorber (4) after installation; Step 2. Install the system pipeline and accessories (8) and the vibration reduction pipe (5) according to the requirements of the system pipeline drawing, and record the length c of the vibration reduction pipe (5) after installation; Step 3. The pipe section (6) near the pump end is used as the process test point for the effect of the first type of pipeline installation on the equipment status. After the system pipelines and accessories (8) are installed, the pipe section is closed. During the closing process, the pipeline support is adjusted to ensure that the deviation between the flanges at both ends of the closed pipe section and the flanges to be connected meets the technical requirement of no more than 1 mm. Then the closed pipe section is installed. After installation, the verticality of the circulating water pump (3), the height value of the equipment vibration damper (4) after installation, and the length value of the vibration damping pipe (5) are measured, and the measurement results a1, b1, c1 are recorded; Step 4. Use the closed pipe section 9 at the far pump end as the process test point for the effect of the second type of pipeline installation on the equipment status. After the system pipelines and accessories (8) are installed, close the pipe section. During the closing process, adjust the pipeline support to ensure that the offset deviation between the flanges at both ends of the closed pipe section and the flanges to be connected meets the technical requirement of no more than 1 mm. Then install the closed pipe section. After installation, measure the verticality of the circulating water pump (3), the height value of the equipment vibration damper (4) after installation, and the length value of the vibration damping pipe (5), and record the measurement results a2, b2, and c2; Step 5. Use the tightness test point (7) near the pump end as the process test point for the third type of influence of pipeline installation on the equipment status. After the system pipeline is installed, perform a tightness test on the entire pipeline, including the circulating water pump 3. The tightness test pressure is 0.5 MPa. After the tightness test, measure the verticality of the circulating water pump (3), the height value of the equipment vibration damper (4) after installation, and the length value of the vibration damping pipe (5), and record the measurement results a3, b3, c3; Step 6. Use the far pump end tightness pressure test point (9) as the fourth process test point for the effect of pipeline installation on the equipment status. After the system pipeline is installed, perform a tightness test on the entire pipeline, including the circulating water pump 3. The tightness test pressure is 0.5 MPa. After the tightness test, measure the verticality of the circulating water pump (3), the height value of the equipment vibration damper (4) after installation, and the length value of the vibration damping pipe (5), and record the measurement results a4, b4, c4; Step 7. After the four process tests are completed, by comparing the changes in the verticality of the circulating water pump (3), the height value of the equipment vibration damper (4) after installation, and the length value of the vibration damping pipe (5) at each stage, the influence of the pipeline installation on the equipment status is determined, and the research work on the process method for maintaining the long-term installation status of the support equipment and system is carried out.

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