Ship multi-pipeline water pressure centralized test system

Abstract

The invention relates to the technical field of pipeline engineering mechanical equipment, in particular to a ship multi-pipeline water pressure centralized test system. The pressure distributor comprises a main body and an electromagnetic valve array connected with the high-pressure hose, and an air inlet and a discharge port are formed in the main body; the high-pressure hose is connected with the pressure distributor and a pipeline to be detected, the outlet end of the high-pressure hose is communicated with the self-checking pipeline through the three-way valve, and the self-checking pipeline is communicated with the high-pressure hose on the pressure distributor; the distributed sensing network comprises intelligent pressure sensors located on the high-pressure hose and the liquid inlet pipeline, and the intelligent pressure sensors communicate with the control unit in real time through the Internet of Things. The control unit comprises a PLC controller and a touch screen man-machine interface. And the cloud data analysis platform receives the data of the control unit and generates a predictive maintenance scheme. According to the invention, unified management and control of multiple pipelines are realized, the installation and maintenance cost is reduced, and the ship pipeline test efficiency and reliability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline engineering machinery and equipment, and particularly to a ship multi-pipeline water pressure centralized test system. Background Art

[0002] For pipeline pressure testing, temporary pipelines are usually used to connect the pipelines inside the pressure test in series, and water filling is carried out through public works such as fire water or tap water. After the water filling is completed, a pipeline pressure test pump is reconnected to increase the pressure. In this way, due to the small water filling flow rate and the system being connected in series through small pipes, it is very difficult to exhaust the air in the pipe completely, which brings great difficulties to increasing and maintaining the pressure. Multiple pipeline systems cannot be pressure tested simultaneously. Moreover, the temporary pipelines removed each time are basically scrapped, and the operation is inconvenient, wasting a large amount of manpower and material resources. The pressure test process is cumbersome and the operation is difficult.

[0003] Chinese Patent CN201220714264.X discloses a pipeline tightness pressure test device, including a hydraulic press, a regulating valve, a distributor, a pressure gauge and a number of stop valves; the hydraulic press is connected to the distributor through a pipeline, one end of the regulating valve is connected to the hydraulic press, and the other end is connected to the pipeline; a number of stop valves are respectively connected to the distributor, and the pressure gauge is also connected to the distributor. The utility model realizes the simultaneous pressure testing of multiple pipeline systems to save the test cost, and at the same time effectively protects the hydraulic press and the pressure gauge and prolongs their service life.

[0004] The devices in the prior art can perform pressure testing on multiple pipeline systems simultaneously, saving the test cost. However, the existing devices lack the self-testing and self-cleaning functions for the devices, and it is easy to cause test errors after long-term use, affecting the accuracy of the test device. Summary of the Invention

[0005] In order to overcome the problems existing in the prior art, the present application provides a ship multi-pipeline water pressure centralized test system.

[0006] The ship multi-pipeline water pressure centralized test system provided by the present application adopts the following technical solutions:

[0007] A ship multi-pipeline water pressure centralized test system includes a plurality of high-pressure hoses arranged in parallel, a pressure test pump, a pressure distributor, a distributed sensing network, a control unit and a cloud data analysis platform;

[0008] The pressure test pump includes a pump body and a heating mechanism installed at the outlet of the pump body, and the outlet of the pump body is connected to the pressure distributor through a liquid inlet pipeline;

[0009] The pressure distributor includes a main body and an electromagnetic valve array connected to the high-pressure hose. An air inlet for connecting compressed air and a discharge port for pressure relief and waste discharge are provided on the main body;

[0010] The high-pressure hose is connected to the pressure distributor and the pipeline to be tested. Its outlet is connected to the self-test pipeline through a three-way valve. The self-test pipeline is connected to the high-pressure hose on the pressure distributor. The sensor calibration and pipeline sealing verification are performed through the self-test pipeline before the system works.

[0011] The distributed sensing network includes smart pressure sensors located on the high-pressure hose and the inlet pipe, which communicate with the control unit in real time through the Internet of Things;

[0012] The control unit includes a PLC controller and a touch screen human-machine interface, wherein the PLC controller is connected with the pressure test pump, pressure distributor, solenoid valve, high-pressure hose and distributed sensor network signal to realize the setting of each pipeline test parameter, automatic control of the execution process and data recording;

[0013] The cloud-based data analysis platform receives data from the control unit, uses a deep learning algorithm to build a pressure distribution prediction model, detects abnormal pressure trends through pattern recognition, and generates a predictive maintenance plan.

[0014] By adopting the above technical solution, the test medium is first introduced through the pressure test pump, and then enters into multiple high-pressure hoses through the pressure distributor. At this time, the outlet of the high-pressure hose is connected to the self-test pipeline. When the pressure of the test medium in the high-pressure hose reaches the set value through the monitoring of the intelligent pressure sensor, the introduction of the test medium is stopped. The closed environment uses distributed sensors to complete calibration and sealing verification. After verification, the pressure test pump is started, and the electric heating sleeve adjusts the medium to the set temperature according to the ambient temperature feedback from the temperature sensor to prevent the medium from freezing, so as to ensure that the medium can be pressurized normally; the PLC controller links the solenoid valve array and the pressure test pump according to the preset parameters, and quickly establishes the target pressure in combination with compressed air. At the same time, multiple high-pressure hoses transport constant temperature media to the pipeline to be tested; the distributed sensor network collects the pressure data of each branch in real time, and after uploading it to the cloud through the control unit, the pressure fluctuation trend is analyzed through the deep learning algorithm, anomalies are identified and predictive maintenance plans are generated, so as to realize efficient parallel detection and intelligent diagnosis of ship pipelines.

[0015] Preferably, the pressure test pump adopts a plunger-type pump body, and the heating mechanism installed at the outlet end of the pressure test pump includes an integrated electric heating jacket and a temperature sensor, wherein a plurality of temperature sensors are spaced apart on the integrated electric heating jacket.

[0016] By adopting the above technical solution, when the plunger pump is pressurized to convey the test medium, the integrated electric heating jacket monitors the circumferential temperature distribution of the pump outlet in real time through the temperature sensors arranged at intervals. When the ambient temperature is low, the PLC dynamically adjusts the partitioned power output of the electric heating jacket based on the PID algorithm, so that the medium is evenly heated or insulated during the flow process, eliminating temperature fluctuations caused by ambient temperature differences or frictional heat generated by the pump body, ensuring the stability of the pipeline expansion coefficient, and improving the measurement accuracy and repeatability of the water pressure test.

[0017] Preferably, an end of the self-checking pipeline away from the high-pressure hose is provided with a backwashing interface, a backwashing branch pipe is arranged beside the liquid inlet of the pressure distributor, a circulating filter cavity is detachably installed on the backwashing branch pipe, the inner diameter of the circulating filter cavity is larger than that of the backwashing branch pipe, and the circulating filter cavity includes a water tank at the bottom of the cavity and a filtering part installed above the water tank, and a circulating pump for pumping water is installed in the water tank.

[0018] Preferably, control valves are arranged on both sides of the connection between the liquid inlet pipeline and the backwashing branch pipe, and the circulating filter cavity is vertically arranged. The top of the circulating filter cavity adopts a water inlet end with a rectangular cross-section structure, and a filtering part is annularly installed around the water inlet end. The inner diameter of the water tank is larger than the outer diameter of the water inlet end, and the cavity of the water tank extends to the periphery of the water inlet end.

[0019] Preferably, the filtering part adopts an embedded rotary filter cartridge, which includes several groups of filtering units evenly distributed in a circumferential manner. A scraping frame is attached to the inner side of the filtering unit, the scraping frame is attached to the inner side surface of the filtering unit, and the scraping frame is driven to rotate by a micro-motor at the bottom and moves along the inner side surface of the filtering unit.

[0020] Preferably, the scraping frame includes an annular main body. The bottom of the annular main body is connected to the output end of the micro-motor through a base, and the top of the annular main body is rotatably connected to the inner annular groove of the filtering part through an annular flange.

[0021] Preferably, the annular main body includes an upper ring body, a lower ring body and inclined rods connecting the upper ring body and the lower ring body, and the inclined rods are inclined towards the rotation direction of the scraping frame.

[0022] By adopting the above technical solutions, when it is necessary to clean the impurities in the pipeline, start the pressure test pump. The control valve switches to make the test medium enter the self-checking pipeline from the backwashing branch pipe through the backwashing interface, then enter reversely from the three-way valve of the high-pressure hose, then enter the pressure distributor, and then when the pressure in the high-pressure hose is monitored by the intelligent pressure sensor to reach the set value, turn off the pressure test pump, close the control valve on the side close to the pressure test pump, and open the control valves of the backwashing branch pipe and the side close to the pressure distributor to form a circular passage of the backwashing pipeline, the high-pressure hose and the pressure distributor. And the test medium circulates under the action of the circulating pump. The filtering part arranged on the backwashing branch pipe adopts a rectangular water inlet end to form a vortex deceleration area, and the impurities are filtered through the filtering units on the filtering part of the circulating filter cavity; at the same time, the micro-motor drives the scraping frame to rotate, and the inclined rods push the impurities adhered to the filtering units to move downward, shoveling the impurities to the bottom of the filtering part to ensure the stable filtering of the filtering units, so as to form a closed purification cycle and realize the online removal of pollutants such as welding slag and scale in the pipeline.

[0023] Preferably, a micro-turbine generator is installed at the discharge port, wherein the micro-turbine generator is connected to a battery module, and the electricity stored in the battery module supplies power to the sensor.

[0024] Preferably, an overpressure protection device connected to each pressure distribution chamber is provided inside the pressure distributor body, including a micro pressure sensor and an electromagnetic pressure relief valve, the electromagnetic pressure relief valve is connected to the micro turbine motor at the discharge port, and the micro pressure sensor is connected to an alarm and transmits the signal to the control unit.

[0025] Preferably, a current limiting baffle made of shape memory alloy is used at the inlet of the pressure distribution chamber, wherein a heating wire is fitted on the outer side of the current limiting baffle, and a power switch of the heating wire is connected to the control unit signal.

[0026] By adopting the above technical solution, when the pipeline test is completed and the pressure needs to be released, the high-pressure medium flows through the micro-turbine generator at the discharge port, drives the impeller to rotate, converts the fluid kinetic energy into electrical energy, and stores it in the battery module to continuously power the sensor; when the pressure distributor is working, if the pressure in the pressure distribution chamber exceeds the threshold, the micro-pressure sensor triggers an alarm and links the electromagnetic pressure relief valve to open. At the same time, the control unit starts the heating wire to apply thermal stimulation to the shape memory alloy current limiting baffle, causing the baffle to deform and shrink to the preset aperture, thereby realizing active flow limitation; the medium released during the pressure relief process drives the turbine generator to continuously generate electricity, forming a closed-loop control of energy recovery-overload protection linkage, reducing the pressure to a safe range, and at the same time, the safety of synchronous pressure relief of multiple pipelines is guaranteed through dual mechanical and electrical control mechanisms.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] 1. This application adopts an integrated design to integrate the test systems of multiple pipelines into one device. Through the linkage of the pressure distributor and the control unit, unified management and control of multiple pipelines are achieved, which not only reduces the size and weight of the equipment, reduces the installation and maintenance costs, but also improves the stability and reliability of the system;

[0029] 2. This application integrates self-check calibration, constant temperature and voltage stabilization, backwash filtration, intelligent pressure relief and energy recovery modules, and adopts distributed sensor network and cloud AI analysis to improve the accuracy of pipeline pressure anomaly detection and reduce leakage location error; the electric heating sleeve on the pressure test pump is used to meet the test requirements at different annular temperatures; a circulating filtration chamber is set in the backwash branch pipe to improve the recycling rate of the test medium and reduce the waste of water resources; energy recovery uses a micro-turbine generator to convert kinetic energy into chemical energy and store it in the battery module to realize the self-sufficient power supply of the sensor;

[0030] 3. Through the dual linkage of the overpressure protection device and the heating drive current limiting mechanism, the emergency pressure relief response time of the present application is greatly reduced, the system safety is improved, and an overall technical system of high efficiency, energy saving, intelligent diagnosis, and closed-loop control is formed, significantly improving the testing efficiency and reliability of ship pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of a ship multi-pipeline water pressure centralized test system;

[0032] Figure 2 is Figure 1 the enlarged view at position A in

[0033] Figure 3 is Figure 1 the enlarged view at position B in

[0034] Figure 4 is the unfolded view of the scraping frame.

[0035] DESCRIPTION OF THE REFERENCE NUMERALS: 1. High-pressure hose; 11. Three-way valve; 2. Pressure test pump; 21. Pump body; 22. Heating mechanism; 221. Integrated electric heating sleeve; 222. Temperature sensor; 23. Liquid inlet pipe; 3. Pressure distributor; 31. Main body; 311. Air inlet; 312. Discharge port; 3121. Micro turbine generator; 3122. Battery module; 32. Solenoid valve; 33. Pressure distribution chamber; 331. Micro pressure sensor; 332. Electromagnetic pressure relief valve; 333. Current limiting partition; 3331. Heating wire; 34. Alarm; 4. Distributed sensing network; 41. Intelligent pressure sensor; 5. Control unit; 51. PLC controller; 52. Touch screen human-machine interface; 6. Cloud data analysis platform; 7. Self-checking pipeline; 71. Backwashing interface; 8. Backwashing branch pipe; 81. Control valve; 9. Circulation filtration cavity; 91. Water tank; 911. Circulation pump; 92. Filtration part; 921. Filtration unit; 922. Scraping frame; 9221. Upper ring body; 9222. Lower ring body; 9223. Diagonal rod; 923. Micro motor; 93. Water inlet end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following further describes the present application in detail Figures 1-4 in conjunction with the accompanying drawings.

[0037] The embodiment of the present application discloses a ship multi-pipeline water pressure centralized test system.

[0038] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4A ship multi-pipeline water pressure centralized test system includes a plurality of high-pressure hoses 1 arranged in parallel, a pressure test pump 2, a pressure distributor 3, a distributed sensor network 4, a control unit 5 and a cloud data analysis platform 6; the pressure test pump 2 includes a pump body 21 and a heating mechanism 22 installed at the outlet of the pump body 21, and the outlet of the pump body 21 is connected to the pressure distributor 3 through a liquid inlet pipe 23; the pressure distributor 3 includes a main body 31 and an array of solenoid valves 32 connected to the high-pressure hose 1, and the main body 31 is provided with an air inlet 311 for connecting compressed air and a discharge port 312 for pressure relief and waste discharge; the high-pressure hose 1 connects the pressure distributor 3 and the pipeline to be tested, and its outlet end is connected to the self-test pipeline 7 through a three-way valve 11, and the self-test pipeline 7 is connected to the high-pressure hose 1 on the pressure distributor 3. Before the system works, the sensor calibration and pipeline sealing verification are carried out through the self-test pipeline 7; the distributed sensing network 4 includes an intelligent pressure sensor 41 located on the high-pressure hose 1 and the liquid inlet pipeline 23, and the intelligent pressure sensor 41 communicates with the control unit 5 in real time through the Internet of Things; the control unit 5 includes a PLC controller 51 and a touch screen human-machine interface 52, wherein the PLC controller 51 is connected with the pressure test pump 2, the pressure distributor 3, the solenoid valve 32, the high-pressure hose 1 and the distributed sensing network 4 by signal, so as to realize the setting of each pipeline test parameter, the execution process automation control and data recording; the cloud data analysis platform 6 receives the data of the control unit 5, adopts the deep learning algorithm to establish the pressure distribution prediction model, detects the abnormal pressure trend through pattern recognition and generates the predictive maintenance plan. First, the test medium is introduced through the pressure test pump 2, and enters into multiple high-pressure hoses 1 through the pressure distributor 3. At this time, the outlet of the high-pressure hose 1 is connected to the self-test pipeline 7. When the pressure of the test medium in the high-pressure hose 1 reaches the set value through the monitoring of the intelligent pressure sensor 41, the introduction of the test medium is stopped. The closed environment uses distributed sensors to complete calibration and sealing verification. After verification, the pressure test pump 2 is started, and the electric heating sleeve adjusts the medium to the set temperature according to the ambient temperature feedback from the temperature sensor 222 to prevent the medium from freezing, so as to ensure that the medium can be pressurized normally; the PLC controller 51 links the electromagnetic valve 32 array and the pressure test pump 2 according to the preset parameters, and quickly establishes the target pressure in combination with compressed air. At the same time, the multiple high-pressure hoses 1 transport the constant temperature medium to the pipeline to be tested; the distributed sensor network 4 collects the pressure data of each branch in real time, and after uploading it to the cloud through the control unit 5, the pressure fluctuation trend is analyzed through the deep learning algorithm, the abnormality is identified and the predictive maintenance plan is generated, so as to realize efficient parallel detection and intelligent diagnosis of ship pipelines.

[0039] Reference Figure 1, the pressure test pump 2 adopts a plunger pump body 21, and the heating mechanism 22 installed at the outlet end of the pressure test pump 2 includes an integrated electric heating sleeve 221 and a temperature sensor 222, wherein a plurality of temperature sensors 222 are distributed at intervals on the integrated electric heating sleeve 221. When the plunger pump pressurizes and transports the test medium, the integrated electric heating sleeve 221 monitors the circumferential temperature distribution at the pump outlet in real time through the temperature sensors 222 arranged at intervals. When the ambient temperature is low, the PLC dynamically adjusts the power output of the electric heating sleeve partition based on the PID algorithm, so that the medium is evenly heated or insulated during the flow process, eliminating the temperature fluctuations caused by the environmental temperature difference or the heat generated by the friction of the pump body 21, ensuring the stability of the pipeline expansion coefficient, and improving the measurement accuracy and repeatability of the hydrostatic test.

[0040] Refer to Figure 1 , Figure 3 and Figure 4, an end of the self-checking pipeline 7 away from the high-pressure hose 1 is provided with a backwashing interface 71. A backwashing branch pipe 8 is arranged beside the liquid inlet of the pressure distributor 3. A circulating filter cavity 9 is detachably installed on the backwashing branch pipe 8. The inner diameter of the circulating filter cavity 9 is larger than that of the backwashing branch pipe 8. It includes a water tank 91 at the bottom of the cavity and a filtering part 92 installed above the water tank 91. And a circulating pump 911 for pumping water is installed in the water tank 91. On both sides of the connection between the liquid inlet pipeline 23 and the backwashing branch pipe 8, control valves 81 are provided. And the circulating filter cavity 9 is vertically arranged. The top of the circulating filter cavity 9 adopts a water inlet end 93 with a rectangular cross-section structure. The filtering part 92 is annularly installed around the water inlet end 93. The water tank 91 has an inner diameter larger than the outer diameter of the water inlet end 93. And the cavity of the water tank 91 extends around the water inlet end 93. The filtering part 92 adopts an embedded rotary filter element bin, including several groups of filtering units 921 evenly distributed in a circumferential manner. Among them, a scraping frame 922 is attached to the inner side of the filtering unit 921. The scraping frame 922 is attached to the inner side surface of the filtering unit 921. And the scraping frame 922 is driven by a micro motor 923 at the bottom to rotate and move along the inner side surface of the filtering unit 921. The scraping frame 922 includes an annular main body 31. Among them, the bottom of the annular main body 31 is connected to the output end of the micro motor 923 through a base. The top of the annular main body 31 is rotationally connected to the inner annular groove of the filtering part 92 through an annular flange. The annular main body 31 includes an upper ring body 9221, a lower ring body 9222 and inclined rods 9223 connecting the upper ring body 9221 and the lower ring body 9222. Among them, the inclined rods 9223 are inclined towards the rotation direction of the scraping frame 922. When it is necessary to clean the impurities in the pipeline, start the pressure test pump 2. The control valve 81 switches to make the test medium enter the self-checking pipeline 7 through the backwashing interface 71 from the backwashing branch pipe 8, and then enter reversely from the three-way valve 11 of the high-pressure hose 1, and then enter the pressure distributor 3. Then when the pressure in the high-pressure hose 1 is monitored by the intelligent pressure sensor 41 to reach the set value, turn off the pressure test pump 2, close the control valve 81 on the side close to the pressure test pump 2, and open the control valve 81 on the backwashing branch pipe 8 and close to the pressure distributor 3. A circular path is formed by the backwashing pipeline, the high-pressure hose 1 and the pressure distributor 3. And the test medium circulates under the action of the circulating pump 911. Among them, the filtering part 92 arranged on the backwashing branch pipe 8 adopts a rectangular water inlet end 93 to form an eddy current deceleration area. The impurities are filtered by the filtering units 921 on the filtering part 92 of the circulating filter cavity 9. At the same time, the micro motor 923 drives the scraping frame 922 to rotate. The inclined rods 9223 push the impurities adhered to the filtering unit 921 to move downward, shoveling the impurities onto the bottom of the filtering part 92, ensuring the stable filtration of the filtering unit 921, so as to form a closed purification cycle and realize the online removal of pollutants such as welding slag and oxide scale in the pipeline.

[0041] Refer to Figure 1 and Figure 2A micro-turbine generator 3121 is installed at the discharge port 312, wherein the micro-turbine generator 3121 is connected to the battery module 3122, and the electricity stored in the battery module 3122 supplies power to the sensor. An overpressure protection device connected to each pressure distribution chamber 33 is provided inside the main body 31 of the pressure distributor 3, including a micro-pressure sensor 331 and an electromagnetic pressure relief valve 332, and the electromagnetic pressure relief valve 332 is connected to the micro-turbine motor at the discharge port 312, wherein the micro-pressure sensor 331 is connected to an alarm 34 and transmits a signal to the control unit 5. A flow-limiting baffle 333 made of shape memory alloy is used at the entrance of the pressure distribution chamber 33, wherein a heating wire 3331 is attached to the outer side of the flow-limiting baffle 333, and the power-on switch of the heating wire 3331 is connected to the control unit 5 signal. When the pipeline test is completed and the pressure needs to be released, the high-pressure medium flows through the micro-turbine generator 3121 of the discharge port 312, drives the impeller to rotate, converts the fluid kinetic energy into electrical energy, and stores it in the battery module 3122 to continuously power the sensor; when the pressure distributor 3 is working, if the pressure in the pressure distribution chamber 33 exceeds the threshold, the micro-pressure sensor 331 triggers an alarm and links the electromagnetic pressure relief valve 332 to open, and at the same time the control unit 5 starts the heating wire 3331 to apply thermal stimulation to the shape memory alloy current limiting baffle 333, so that the baffle deforms and shrinks to the preset aperture, thereby realizing active flow limitation; the medium released during the pressure relief process drives the turbine generator to continuously generate electricity, forming a closed-loop control of energy recovery-overload protection linkage, reducing the pressure to a safe range, and at the same time ensuring the safety of synchronous pressure relief of multiple pipelines through dual mechanical and electrical control mechanisms.

[0042] Working principle:

[0043] Step 1: The PLC controller 51 sets the test pressure of each high-pressure hose 1, and connects the high-pressure hose 1 to the pipeline to be tested through the three-way valve 11, wherein each high-pressure hose 1 can be set with the same or different test pressures;

[0044] Step 2: Before the test, adjust the three-way valve 11 at the outlet of each high-pressure hose 1, connect the high-pressure hose 1 with the self-test pipe 7, start the pressure test pump 2, open the pressure-increasing valve on the liquid inlet pipe 23 of the pressure test pump 2, inject water into the self-test pipe 7 to pressurize it, and check whether the pressure in each high-pressure hose 1 is normal. If the pressure is normal, start the test. If the pressure is abnormal, repair and replace the test device;

[0045] Step 3: During normal testing, start the pressure test pump 2, open the control valve 81 on the liquid inlet pipe 23 of the pressure test pump 2, close the control valve 81 at the end of the backwash branch pipe 8, adjust the three-way valve 11 on the high-pressure hose 1 to connect with the pipeline to be tested, pressurize the pressure in each high-pressure hose 1 to the set pressure value through the pressure distributor 3, automatically close the solenoid valve 32 at the end of each high-pressure hose 1, and the intelligent pressure sensor 41 feeds back the signal to the control unit 5 through the distributed sensor network 4;

[0046] Step 4: When the pressure in the high-pressure hose 1 is lower than the set pressure value, the intelligent pressure sensor 41 transmits a signal to the control unit 5. The control unit 5 issues an instruction, and the program automatically activates the pressure compensation function to compensate the branch with low pressure to make it reach the set pressure value. When the outside temperature is relatively low, the heating mechanism 22 of the pressure test pump 2 can be started to prevent the medium from thawing, so as to ensure that the medium can be normally pressurized.

[0047] Step 5: After the test is completed, compressed air is introduced from the air inlet 311 through the pressure distributor 3 into each high-pressure hose 1 to blow the remaining moisture in the high-pressure hose 1 clean, ensuring that each high-pressure hose 1 is clean.

[0048] Step 6: After the equipment has been used for a long time and when cleaning the pipeline impurities, start the pressure test pump 2. The control valve 81 is switched so that the test medium enters the self-checking pipeline 7 through the backwashing branch pipe 8 through the backwashing interface 71, then enters from the three-way valve 11 of the high-pressure hose 1 in the reverse direction, then enters the pressure distributor 3, and then when the pressure in the high-pressure hose 1 monitored by the intelligent pressure sensor 41 reaches the set value, turn off the pressure test pump 2, close the control valve 81 on the side close to the pressure test pump 2, and open the control valve 81 of the backwashing branch pipe 8 and the side close to the pressure distributor 3 to form a circular path of the backwashing pipeline, the high-pressure hose 1 and the pressure distributor 3. And the path circulates the test medium under the action of the circulating pump 911. The filtering part 92 provided on the backwashing branch pipe 8 forms an eddy current deceleration area with a rectangular water inlet end 93, and impurities are filtered by the filtering unit 921 on the filtering part 92 of the circulating filtering cavity 9. At the same time, the micro motor 923 drives the scraping frame 922 to rotate, and the inclined rod 9223 pushes the impurities adhering to the filtering unit 921 to move downward, shoveling the impurities onto the bottom of the filtering part 92 to ensure the stable filtering of the filtering unit 921.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ship multi-pipeline water pressure centralized test system, characterized in that: It comprises a plurality of high-pressure hoses (1) arranged in parallel, a pressure test pump (2), a pressure distributor (3), a distributed sensor network (4), a control unit (5) and a cloud data analysis platform (6); The pressure test pump (2) comprises a pump body (21) and a heating mechanism (22) installed at the outlet of the pump body (21), and the outlet of the pump body (21) is connected to a pressure distributor (3) via a liquid inlet pipe (23); the pressure distributor (3) comprises a main body (31) and an array of solenoid valves (32) connected to a high-pressure hose (1), and the main body (31) is provided with an air inlet (311) for connecting compressed air and a discharge port (312) for pressure relief and waste discharge; The high-pressure hose (1) is connected to the pressure distributor (3) and the pipeline to be tested, and its outlet end is connected to the self-test pipeline (7) through a three-way valve (11). The self-test pipeline (7) and the high-pressure hose (1) on the pressure distributor (3) are both connected. Before the system is operated, sensor calibration and pipeline sealing verification are performed through the self-test pipeline (7); The distributed sensing network (4) comprises an intelligent pressure sensor (41) located on the high-pressure hose (1) and the liquid inlet pipeline (23), and the intelligent pressure sensor (41) communicates with the control unit (5) in real time via the Internet of Things; The control unit (5) comprises a PLC controller (51) and a touch screen human-machine interface (52), wherein the PLC controller (51) is connected to the pressure test pump (2), the pressure distributor (3), the solenoid valve (32), the high-pressure hose (1) and the distributed sensor network (4) by signal, so as to realize the setting of each pipeline test parameter, the automatic control of the execution process and the data recording; The cloud data analysis platform (6) receives data from the control unit (5), uses a deep learning algorithm to establish a pressure distribution prediction model, detects abnormal pressure trends through pattern recognition, and generates a predictive maintenance plan.

2. A ship multi-pipeline water pressure centralized test system according to claim 1, characterized in that: The pressure test pump (2) adopts a plunger-type pump body (21), and the heating mechanism (22) installed at the outlet end of the pressure test pump (2) comprises an integrated electric heating sleeve (221) and a temperature sensor (222), wherein a plurality of temperature sensors (222) are distributed at intervals on the integrated electric heating sleeve (221).

3. A ship multi-pipeline water pressure centralized test system according to claim 1, characterized in that: A backwash interface (71) is provided at one end of the self-test pipe (7) away from the high-pressure hose (1); a backwash branch pipe (8) is provided next to the liquid inlet of the pressure distributor (3); a circulating filter cavity (9) is detachably mounted on the backwash branch pipe (8); the circulating filter cavity (9) has an inner diameter larger than that of the backwash branch pipe (8), and comprises a water tank (91) at the bottom of the cavity and a filter portion (92) mounted above the water tank (91); and a circulating pump (911) for pumping water is installed in the water tank (91).

4. A ship multi-pipeline water pressure centralized test system according to claim 3, characterized in that: Control valves (81) are provided on both sides of the connection between the liquid inlet pipe (23) and the backwash branch pipe (8), and the circulating filter chamber (9) is arranged vertically. The top of the circulating filter chamber (9) adopts a water inlet end (93) with a rectangular cross-section structure, and a filter part (92) is installed in a ring around the water inlet end (93). The water tank (91) adopts an inner diameter larger than the outer diameter of the water inlet end (93), and the cavity of the water tank (91) extends to the surrounding of the water inlet end (93).

5. A ship multi-pipeline water pressure centralized test system according to claim 4, characterized in that: The filter portion (92) adopts an embedded rotary filter cartridge, comprising a plurality of groups of filter units (921) evenly distributed around the circumference, wherein a scraping frame (922) is attached to the inner side of the filter unit (921), the scraping frame (922) is attached to the inner side surface of the filter unit (921), and the scraping frame (922) is driven to rotate by a micro motor (923) at the bottom and moves in contact with the inner side surface of the filter unit (921).

6. A ship multi-pipeline water pressure centralized test system according to claim 5, characterized in that: The scraping frame (922) comprises an annular body (31), wherein the bottom of the annular body (31) is connected to the output end of the micro motor (923) via a base, and the top of the annular body (31) is rotatably connected to the inner annular groove of the filter part (92) via an annular fold.

7. A ship multi-pipeline water pressure centralized test system according to claim 6, characterized in that: The annular body (31) comprises an upper ring body (9221), a lower ring body (9222), and an inclined rod (9223) connecting the upper ring body (9221) and the lower ring body (9222), wherein the inclined rod (9223) is inclined toward the rotation direction of the scraping frame (922).

8. A ship multi-pipeline water pressure centralized test system according to claim 1, characterized in that: A micro-turbine generator (3121) is installed at the discharge port (312), wherein the micro-turbine generator (3121) is connected to a battery module (3122), and the electricity stored in the battery module (3122) supplies power to the sensor.

9. A ship multi-pipeline water pressure centralized test system according to claim 8, characterized in that: An overpressure protection device is provided inside the main body (31) of the pressure distributor (3) and is connected to each pressure distribution chamber (33), comprising a micro pressure sensor (331) and an electromagnetic pressure relief valve (332), wherein the electromagnetic pressure relief valve (332) is connected to a micro turbine motor at the discharge port (312), wherein the micro pressure sensor (331) is connected to an alarm (34) and transmits a signal to a control unit (5).

10. A ship multi-pipeline water pressure centralized test system according to claim 9, characterized in that: A current limiting baffle (333) made of shape memory alloy is used at the entrance of the pressure distribution chamber (33), wherein a heating wire (3331) is fitted on the outer side of the current limiting baffle (333), and a power switch of the heating wire (3331) is connected to a control unit (5) signal.

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