A new type of water hammer protector for long-distance water transmission pipelines

Abstract

This utility model relates to the technical field of water pipeline protectors, and discloses a novel water hammer protector for long-distance water pipelines. It includes a protector body, with a partition fixedly connected inside the protector body. A positive pressure buffer chamber is formed on the upper side of the protector body, and a negative pressure buffer chamber is formed on the lower side. A porous energy dissipation plate is fixedly connected to the inner wall of the protector body, and the outer wall of the porous energy dissipation plate is fixedly connected to the outer wall of the partition. An electromagnetic safety valve is installed at the top of the protector body, and a water valve is installed at the bottom of the negative pressure buffer chamber. A support box is fixedly connected to the outer wall of the protector body. In this utility model, by setting up positive and negative pressure buffer chambers inside the protector body, and through the cooperation of the electromagnetic safety valve and the water valve, the positive and negative pressure buffer chambers can simultaneously cope with both positive and negative pressure water hammer phenomena, effectively expanding the scope of application.

Description

Technical Field

[0001] This utility model relates to the technical field of water pipeline protectors, and in particular to a novel water hammer protector for long-distance water pipelines. Background Technology

[0002] Long-distance water transmission pipelines refer to pipeline systems used for transporting water resources over long distances, typically for inter-regional water transfer, urban water supply, agricultural irrigation, or industrial water use. During operation, long-distance water transmission pipelines can experience water hammer due to sudden valve closures or pump station shutdowns, causing a rapid increase or decrease in pressure within the pipeline. In severe cases, this can lead to pipeline rupture or equipment damage. To ensure the safe and stable operation of the pipeline, a new type of water hammer protector for long-distance water transmission pipelines is required.

[0003] A novel water hammer protector for long-distance water transmission pipelines can effectively suppress water hammer hazards and ensure the safe and stable operation of long-distance water transmission pipelines through real-time monitoring, intelligent analysis, and rapid pressure regulation. Existing protectors typically cannot effectively address both positive and negative pressure water hammer phenomena simultaneously, limiting their applicability. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a new type of water hammer protector for long-distance water transmission pipelines, which aims to improve the problem that existing protectors usually cannot effectively deal with both positive and negative pressure water hammer phenomena at the same time.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel water hammer protector for long-distance water transmission pipelines, comprising a protector body, a partition fixedly connected inside the protector body, a positive pressure buffer chamber opened on the upper side of the protector body, a negative pressure buffer chamber opened on the lower side of the protector body, a porous energy dissipation plate fixedly connected to the inner wall of the protector body, the outer wall of the porous energy dissipation plate fixedly connected to the outer wall of the partition, an electromagnetic safety valve provided at the top of the protector body, the input end of the electromagnetic safety valve fixedly connected inside the positive pressure buffer chamber, a water valve provided at the bottom of the negative pressure buffer chamber, a support box fixedly connected to the outer wall of the protector body, and a limit component provided on the outer wall of the protector body.

[0006] The above technical solution involves dividing the interior of the protector body into two chambers—a positive pressure buffer chamber and a negative pressure buffer chamber—by installing a partition inside the protector body. These chambers are designed to handle both positive and negative pressure water hammer. An electromagnetic safety valve, located at the top of the protector body and connected to the positive pressure buffer chamber, releases excess pressure after high-pressure water enters and compresses the air inside. A water valve, located at the bottom of the protector body and connected to the drain outlet of the negative pressure buffer chamber, draws water from the support box into the negative pressure buffer chamber when negative pressure water hammer occurs, replenishing the water lost from the partition. The combined positive and negative pressure buffer chambers effectively address both positive and negative pressure water hammer simultaneously.

[0007] As a further description of the above technical solution:

[0008] The limiting component includes a first fixing ring, the outer wall of which is fixedly connected to the outer wall of the protector body. A second fixing ring is slidably connected to the outer wall of the first fixing ring. A limiting block is slidably connected inside the protector body. The top end of a first spring is fixedly connected to the lower surface of the limiting block. The bottom end of the first spring is fixedly connected to the inside of the protector body. The inner wall of the limiting block is engaged with the outer wall of the second fixing ring.

[0009] The above technical solution involves the limiting block being engaged with the inner wall of the second fixed ring on one side, which limits and offsets the second fixed ring, ensuring that the second fixed ring is tightly attached to the first fixed ring. This prevents misalignment after the main body of the protector and the connecting pipe are installed. The first spring is located inside the first spring and fixed to the upper surface of the limiting block. When the limiting block is stretched, it will also pull the spring. After the limiting block is released, the first spring can reset the limiting block, thus locking the limiting block onto the outer wall of the second fixed ring.

[0010] As a further description of the above technical solution:

[0011] A rotating shaft is fixedly connected inside the first fixed ring. An eccentric wheel is rotatably connected to the outer wall of the rotating shaft. A sliding block is slidably connected to the outer wall of the eccentric wheel. The outer wall of the sliding block is slidably connected to the inside of the main body of the protector. A locking block is fixedly connected to the inner wall of the sliding block. A connecting ring is locked to the outer wall of the locking block. The outer wall of the connecting ring is fixedly connected to the inner wall of the second fixed ring. A connecting pipe is fixedly connected to the inner wall of the second fixed ring.

[0012] Through the above technical solution: rotating the eccentric wheel will cause the eccentric wheel to squeeze the sliding block and move the sliding block. As the two sliding blocks move towards the center, the locking block can be driven to lock into the groove of the connecting ring, so that the locking block and the connecting ring are tightly fitted. The fitting of the locking block and the connecting ring can splice the body of the protector and the connecting pipe.

[0013] As a further description of the above technical solution:

[0014] The main body of the protector is rotatably connected to a rotating plate, and a connecting column is fixedly connected to the inside of the rotating plate. The outer wall of the connecting column is rotatably connected to the inside of a sliding block, and the outer wall of the sliding block is fixedly connected to both ends of a second spring.

[0015] Through the above technical solution: the connecting column rotates inside the sliding block, and the rotating plate is connected to the sliding block through the connecting column. Since the two connecting columns are misaligned, when the rotating plate rotates, it will cause the upper and lower sliding blocks to move towards the center through the torsion effect, thereby achieving the function of clamping and fixing the connecting ring with the locking block.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the fixed ring is fixedly connected with a buckle, and the outer wall of the eccentric wheel is engaged with the inner wall of the buckle.

[0018] The above technical solution involves a buckle fixed to the outer wall of the fixing ring, and the buckle's inner wall tightly connected to the handle of the eccentric wheel. The buckle's magnetic attraction can fix and limit the offset of the handle of the eccentric wheel, allowing it to be fixed inside the buckle, thus ensuring the stability of the eccentric wheel's compression of the sliding block.

[0019] As a further description of the above technical solution:

[0020] The main body of the protector is equipped with a high-frequency dynamic pressure sensor. The output of the high-frequency dynamic pressure sensor is connected to the input of an ultra-high-speed acquisition module. The output of the ultra-high-speed acquisition module is connected to the input of a core control module. The output of the core control module is connected to the input of a dual-mode processing module. The output of the dual-mode processing module is connected to the input of an execution control module. The output of the execution control module is connected to the inputs of an electromagnetic safety valve and a water valve, respectively. The outputs of both the electromagnetic safety valve and the water valve are connected to the input of a hardware status monitoring module.

[0021] The above technical solution involves using a high-frequency dynamic pressure sensor to monitor pressure fluctuations in real time inside the partition and transmitting the data to an ultra-high-speed acquisition module. The data is then processed by the ultra-high-speed acquisition module, and the processing results are transmitted to the core control module for analysis and decision-making. The dual-mode processing module and the execution control module drive the electromagnetic safety valve and water valve to operate based on the final decision results. After protection, the hardware status monitoring module provides feedback on the equipment status. Through the synergistic effect between the modules, the response speed to water hammer events can be improved, and sudden water hammer pressure can be quickly alleviated, dealing with both positive and negative pressure water hammer phenomena.

[0022] As a further description of the above technical solution:

[0023] The output signal of the hardware status monitoring module is connected to the input of the reliability assurance module, and the output signal of the hardware status monitoring module is connected to the input of the core control module.

[0024] The above technical solution involves a hardware status monitoring module that monitors the equipment status in real time and transmits the signals to both the reliability assurance module and the core control module. The synergistic effect of these two modules ensures the safe and stable operation of the water pipeline.

[0025] As a further description of the above technical solution:

[0026] The core control module and the reliability assurance module are bidirectionally connected. The core control module includes a hardware PID accelerator, a water hammer classifier, and a dynamic parameter memory. The output signal of the dynamic parameter memory is connected to the input signal of the water hammer classifier, the output signal of the water hammer classifier is connected to the input signal of the hardware PID accelerator, the output signal of the hardware PID accelerator is connected to the input signal of the dynamic parameter memory, and the output signal of the hardware PID accelerator is connected to the dual-mode processing module. The output signal of the execution control module is connected to the input signal of the reliability assurance module. The execution control module includes a PWM generator, an H-bridge driver, and a valve position decoder. The output signal of the PWM generator is connected to the input signal of the H-bridge driver, the output signal of the H-bridge driver is connected to the input signal of the valve position decoder, and the output signal of the dual-mode processing module is connected to the input signal of the PWM generator.

[0027] Through the above technical solution, the bidirectional connection between the core control module and the reliability assurance module enables real-time coordination of control strategies and safety commands. The core control module transmits data such as water hammer events and pressure change trends to the reliability assurance module, which then activates the corresponding level of monitoring strategy based on the data. Through the synergistic effect of the two modules, the high reliability and long-term stable operation of the protector body can be achieved.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, by setting a positive pressure buffer chamber and a negative pressure buffer chamber inside the main body of the protector, and by cooperating with the electromagnetic safety valve and the water valve, the positive pressure buffer chamber and the negative pressure buffer chamber can simultaneously cope with positive and negative pressure water hammer phenomena, effectively improving the scope of application.

[0030] 2. In this utility model, the ultra-high-speed acquisition module can achieve the effect of accurately and quickly extracting the millisecond-level pressure change rate. Through the cooperation between the core control module, the dual-mode processing module and the execution module, the response speed is improved and sudden water hammer pressure can be quickly alleviated. The reliability assurance module can improve the reliability of the protective device and make the long-term performance more stable. Attached Figure Description

[0031] Figure 1 Figure 1 shows a novel water hammer protector for long-distance water transmission pipelines proposed in this utility model.

[0032] Figure 2 A cross-sectional schematic diagram of the internal structure of the support box of a novel water hammer protector for long-distance water transmission pipelines proposed in this utility model;

[0033] Figure 3 This is a partial structural diagram of the connecting ring of a novel water hammer protector for long-distance water transmission pipelines proposed in this utility model.

[0034] Figure 4 This is a partial structural diagram of the rotating plate of a novel water hammer protector for long-distance water transmission pipelines proposed in this utility model.

[0035] Figure 5 This utility model presents a schematic block diagram of the module connection for a novel water hammer protector for long-distance water transmission pipelines.

[0036] Figure 6 A schematic block diagram of the core control module of a novel water hammer protector for long-distance water transmission pipelines proposed in this utility model;

[0037] Figure 7 This utility model presents a schematic block diagram of the execution control module of a novel long-distance water hammer protector for water transmission pipelines.

[0038] Legend:

[0039] 1. Protector body; 2. Partition plate; 3. Positive pressure buffer chamber; 4. Negative pressure buffer chamber; 5. Perforated energy dissipation plate; 6. Electromagnetic safety valve; 7. Water valve; 8. Support box; 9. Limiting assembly; 901. Fixing ring one; 902. Fixing ring two; 903. Limiting block; 904. Spring one; 10. Connecting pipe; 11. Rotating shaft; 12. Eccentric wheel; 13. Sliding block; 14. Locking block; 15. Connecting ring; 16. Rotating plate; 17. Connecting column; 18. Spring two; 19. Buckle. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a novel water hammer protector for long-distance water transmission pipelines, comprising a protector body 1, a partition 2 fixedly connected inside the protector body 1, a positive pressure buffer chamber 3 opened on the upper side of the protector body 1, a negative pressure buffer chamber 4 opened on the lower side of the protector body 1, a porous energy dissipation plate 5 fixedly connected to the inner wall of the protector body 1, the outer wall of the porous energy dissipation plate 5 fixedly connected to the outer wall of the partition 2, an electromagnetic safety valve 6 provided at the top of the protector body 1, the input end of the electromagnetic safety valve 6 fixedly connected inside the positive pressure buffer chamber 3, a water valve 7 provided at the bottom of the negative pressure buffer chamber 4, a support box 8 fixedly connected to the outer wall of the protector body 1, and a limit component 9 provided on the outer wall of the protector body 1.

[0042] Specifically, the partition 2 is fixed inside the main body 1 of the protector. The main body 1 of the protector can fix the partition 2. By setting the partition 2, the interior of the main body 1 of the protector is divided into two downward parts, namely the positive pressure buffer chamber 3 and the negative pressure buffer chamber 4. When high-pressure water flows into the positive pressure buffer chamber 3 and compresses the air in the chamber, the excess pressure is released through the electromagnetic safety valve 6. The electromagnetic safety valve 6 is existing technology. When negative pressure water hammer occurs in the partition 2, the negative pressure buffer chamber 4 will draw water from the support box 8 into the negative pressure buffer chamber 4 through the drain port at the bottom of the negative pressure buffer chamber 4 via the water valve 7. The water valve 7 is existing technology and is electromagnetic. The missing water volume is balanced by the pressure. The main body 1 of the protector can fix the porous energy dissipation plate 5. The porous energy dissipation plate 5 is an existing technology. The porous energy dissipation plate 5 is set inside the main body 1 to buffer and dissipate energy, further disperse water hammer energy, and reduce local pressure peaks. The support box 8 provides fixed support for the main body 1. At the same time, the support box 8 can store water, which can be used by the negative pressure buffer chamber 4 to draw water to replenish the missing water volume through the water valve 7. By setting the water valve 7 and the electromagnetic safety valve 6, the response speed can be improved, which can quickly alleviate sudden water hammer pressure and effectively deal with positive and negative pressure water hammer phenomena.

[0043] Reference Figure 1 , Figure 3 and Figure 4 The limiting component 9 includes a first fixing ring 901, the outer wall of which is fixedly connected to the outer wall of the protector body 1, a second fixing ring 902 slidably connected to the outer wall of the first fixing ring 901, a limiting block 903 slidably connected inside the protector body 1, the top end of a first spring 904 fixedly connected to the lower surface of the limiting block 903, the bottom end of the first spring 904 fixedly connected to the inside of the protector body 1, and the inner wall of the limiting block 903 engaging with the outer wall of the second fixing ring 902.

[0044] Specifically, the main body 1 of the protector has a fixing function on the fixing ring 901, and the fixing ring 901 has a supporting and limiting offset function on the limiting block 903, so that the limiting block 903 can only slide inside the fixing ring 901. The spring 904 is set inside the fixing ring 901 and fixed to the lower surface of the limiting block 903. It will be stretched as the limiting block 903 moves and has a resetting function on the limiting block 903. One side of the limiting block 903 slides inside the fixing ring 901, and the inner wall of the other side slides to the outer wall of the fixing ring 902. The limiting block 903 can clamp and fix the fixing ring 901 and the fixing ring 902 together and limit the offset of the fixing ring 902, so as to prevent the fixing ring 901 and the fixing ring 902 from separating.

[0045] Reference Figure 3 and Figure 4A rotating shaft 11 is fixedly connected inside the fixed ring 901. An eccentric wheel 12 is rotatably connected to the outer wall of the rotating shaft 11. A sliding block 13 is slidably connected to the outer wall of the eccentric wheel 12. The outer wall of the sliding block 13 is slidably connected to the inside of the protector body 1. A locking block 14 is fixedly connected to the inner wall of the sliding block 13. A connecting ring 15 is locked to the outer wall of the locking block 14. The outer wall of the connecting ring 15 is fixedly connected to the inner wall of the fixed ring 902. A connecting pipe 10 is fixedly connected to the inner wall of the fixed ring 902. A rotating plate 16 is rotatably connected inside the protector body 1. A connecting column 17 is fixedly connected inside the rotating plate 16. The outer wall of the connecting column 17 is rotatably connected to the inside of the sliding block 13. The two ends of a spring 18 are fixedly connected to the outer wall of the sliding block 13.

[0046] Specifically, the first fixing ring 901 fixes the rotating shaft 11, and the connecting pipe 10 fixes the second fixing ring 902. The connecting pipe 10 is used for water conveyance. The rotating shaft 11 supports the eccentric wheel 12. A handle is fixedly installed inside the eccentric wheel 12. By rotating the handle, the eccentric wheel 12 can rotate on the outer wall of the rotating shaft 11. The first fixing ring 901 has a sliding groove inside, which allows the eccentric wheel 12 to rotate. Due to the eccentric setting of the eccentric wheel 12, it will squeeze the sliding block 13 when the eccentric wheel 12 rotates. The sliding block 13 slides inside the first fixing ring 901. The first fixing ring 901 can support and limit the displacement of the sliding block 13. The sliding block 13 is divided into upper and lower parts and is connected to the rotating plate 16 through the connecting post 17. The first fixing ring 901 supports the rotating plate 16. When the sliding block 13 moves downward, it will drive the rotating plate 16 to rotate through the internal connecting post 17. 7. The upper and lower ends of the rotating plate 16 are misaligned. The rotation of the rotating plate 16 will cause the lower connecting column 17 to move the lower sliding block 13 upward, thereby causing the two sliding blocks 13 to move towards the center. The movement of the sliding block 13 will cause the locking block 14 fixed on the outer wall to move synchronously, and the locking block 14 will be locked in the inner wall of the connecting ring 15. The outer wall of the connecting ring 15 has a groove that matches the shape of the locking block 14. Through the engagement of the locking block 14 and the connecting ring 15, the splicing of the main body 1 of the protector and the connecting pipe 10 can be further realized. At the same time, the splicing work can be carried out by rotating the eccentric wheel 12, which can effectively reduce the installation steps. The second spring 18 is set between the two sliding blocks 13. When the sliding block 13 squeezes the second spring 18, the second spring 18 will generate a rebound force. Then, when the eccentric wheel 12 is released and the sliding block 13 no longer squeezes the second spring 18, the second spring 18 will play a reset role for the sliding block 13, so that the sliding block 13 returns to its original position, achieving the function of quick disassembly.

[0047] Reference Figure 1 and Figure 4 The outer wall of the fixed ring 901 is fixedly connected with a buckle 19, and the outer wall of the eccentric wheel 12 is engaged with the inner wall of the buckle 19.

[0048] Specifically, the fixing ring 901 has a fixing effect on the buckle 19, and the buckle 19 is magnetic. The handle part of the eccentric wheel 12 can be fixed and limited to offset by the buckle 19. After the eccentric wheel 12 is rotated to squeeze the sliding block 13, the handle part of the eccentric wheel 12 will be stuck on the inner wall of the buckle 19, so that the sliding block 13 can be kept in the squeezed state.

[0049] Reference Figure 1 and Figure 5 The main body 1 of the protector is equipped with a high-frequency dynamic pressure sensor. The output of the high-frequency dynamic pressure sensor is connected to the input of the ultra-high-speed acquisition module. The output of the ultra-high-speed acquisition module is connected to the input of the core control module. The output of the core control module is connected to the input of the dual-mode processing module. The output of the dual-mode processing module is connected to the input of the execution control module. The output of the execution control module is connected to the input of the electromagnetic safety valve 6 and the water valve 7 respectively. The outputs of the electromagnetic safety valve 6 and the water valve 7 are both connected to the input of the hardware status monitoring module.

[0050] Specifically, a high-frequency dynamic pressure sensor can be used to monitor dynamic pressure changes in pipelines in real time, achieving precise extraction of millisecond-level pressure change rates. The output of the high-frequency dynamic pressure sensor is connected to the input of an ultra-high-speed acquisition module via a high-speed SPI interface. The ultra-high-speed acquisition module performs anti-aliasing filtering and sliding window differentiation on the sensor signal to extract pressure change rate characteristics, providing key dynamic parameters for subsequent water hammer type identification and rapid response control. The output of the ultra-high-speed acquisition module can transmit the processed data to the input of the core control module in real time via a DMA channel. The core control module uses a water hammer classifier to analyze pressure fluctuation trends, distinguish between positive and negative water hammer based on the data, and output the classification results to a dual-mode processing module. The control module generates a control strategy based on the type of water hammer. Specifically, it calculates the safety valve opening under positive pressure and generates a pulse water replenishment command under negative pressure. These commands are output to the execution control module via PWM and digital I / O. The execution control module drives the H-bridge driver using a 20kHz duty cycle signal generated by the PWM generator, which in turn drives the solenoid safety valve 6 and the water valve 7. This enables rapid pressure relief during positive water hammer and immediate water replenishment during negative water hammer, thus addressing both positive and negative water hammer phenomena. The hardware status monitoring module uses a high-precision Hall effect flow meter and a magnetostrictive displacement sensor to collect real-time data on the pressure relief flow of the solenoid safety valve 6 and the water replenishment flow of the water valve 7. This ensures that the pressure relief and water replenishment flow strictly match the control commands, achieving high reliability and stable long-term performance.

[0051] Reference Figure 5The output signal of the hardware status monitoring module is connected to the input of the reliability assurance module, and the output signal of the hardware status monitoring module is connected to the input of the core control module.

[0052] Specifically, the output of the hardware status monitoring module can be connected to the inputs of the reliability assurance module and the core control module respectively through a dual-channel communication architecture. The hardware status monitoring module can acquire the valve core position signal of the electromagnetic safety valve 6 in real time through a built-in high-precision Hall encoder, and at the same time monitor the water supply flow of the water valve 7 in real time through an ultrasonic flow meter. The hardware status monitoring module can also transmit the real-time valve status of the electromagnetic safety valve 6 and the water valve 7 to the reliability assurance module through the CAN bus. The reliability assurance module can analyze the degradation trend of the equipment through the Markov chain model. When the valve action delay is detected to exceed the threshold, a three-level degradation strategy will be triggered through the hardware watchdog circuit. At the same time, the hardware status monitoring module can also transmit the sensor health status to the core control module through the SPI interface. The core control module will dynamically adjust the PID parameters and output the compensation control quantity in real time through the hardware PID accelerator implemented by FPGA, thereby realizing hardware-level protection.

[0053] Reference Figure 5 , Figure 6 and Figure 7 The core control module and the reliability assurance module are bidirectionally connected. The core control module includes a hardware PID accelerator, a water hammer classifier, and a dynamic parameter memory. The output signal of the dynamic parameter memory is connected to the input of the water hammer classifier. The output signal of the water hammer classifier is connected to the input of the hardware PID accelerator. The output signal of the hardware PID accelerator is connected to the input of the dynamic parameter memory. The output signal of the hardware PID accelerator is connected to the dual-mode processing module. The output signal of the execution control module is connected to the input of the reliability assurance module. The execution control module includes a PWM generator, an H-bridge driver, and a valve position decoder. The output signal of the PWM generator is connected to the input of the H-bridge driver. The output signal of the H-bridge driver is connected to the input of the valve position decoder. The output signal of the dual-mode processing module is connected to the input of the PWM generator.

[0054] Specifically, the core control module and the reliability assurance module can interact via a bidirectional digitally isolated communication channel. The dynamic parameter memory of the core control module presets pressure threshold parameters to the water hammer classifier through the I²C interface. The water hammer type signal output by the water hammer classifier is transmitted in real time to the register group of the hardware PID accelerator via the data bus. The PID calculation result is stored back to the EEPROM via the SPI interface to complete the closed-loop calibration and achieve the effect of dynamically optimizing control parameters. The PWM generator of the execution control module generates a 20kHz duty cycle signal to drive the H-bridge driver. At the same time, the dual-mode processing module can send valve action commands to the execution control module through the PWM generator to control the solenoid safety valve 6 to work. The valve position decoder feeds back the valve core position to the core control module. The abnormal state of the valve core is directly connected to the reliability assurance module through the hardware watchdog circuit, thereby triggering the three-level degradation strategy. At the same time, the output of the core control module can transmit the water hammer event level, pressure change rate trend and control strategy hash value to the reliability assurance module in real time through the UART interface, triggering the reliability module to start the corresponding level of monitoring strategy. In addition, the reliability assurance module will also monitor the compliance of the core control module's commands in real time through the hardware comparator.

[0055] Working principle: When the protector is needed, first pull the limiting block 903 upward, then place the connecting ring 15 into the inner wall of the protector body 1, and make the fixing ring 1 901 and fixing ring 2 902 fit together. At this time, release the limiting block 903 so that the limiting block 903 is locked on the outer wall of the fixing ring 2 902. Then rotate the eccentric wheel 12 to press the upper sliding block 13. The upper sliding block 13 will move due to the pressure. The movement of the sliding block 13 will cause the rotating plate 16 to rotate. The rotation of the rotating plate 16 will drive the lower sliding block 13 to rotate and move upward. The movement of the two sliding blocks 13 towards the heavy armor will cause the locking block 14 to move and lock the locking block 14 into the inner wall of the connecting ring 15. At this time, the eccentric wheel... The outer wall of 12 is locked onto the inner wall of buckle 19. The buckle 19 limits the offset of the eccentric wheel 12, thereby enabling the clamping block 14 to stably clamp the connecting ring 15. Furthermore, the limiting block 903 limits the fixing ring 902, and the clamping block 14 limits the clamping of the connecting ring 15. This allows for quick splicing and installation between the main body 1 of the protector and the connecting pipe 10, effectively reducing operation steps and facilitating maintenance. When positive pressure water hammer occurs in the partition 2, high-pressure water flows into the positive pressure buffer chamber 3, compresses the air in the chamber, and releases excess pressure through the electromagnetic safety valve 6. When negative pressure water hammer occurs in the partition 2, the negative pressure buffer chamber 4 draws water from the support box 8 through the water valve 7 to replenish the water missing in the pipe, thereby achieving the effect of balancing pressure.

[0056] During water conveyance through baffle 2, the internal pressure of baffle 2 is monitored in real time by a high-frequency dynamic pressure sensor. The high-frequency dynamic pressure sensor transmits the pressure data to the ultra-high-speed acquisition module. After filtering and differentiation processing by the ultra-high-speed acquisition module, the processing result is transmitted to the core control module. The core control module analyzes the pressure change rate and classifies the water hammer type, converting the water hammer type into a digital signal and transmitting it to the dual-mode processing module. The dual-mode processing module generates a corresponding strategy based on the data and sends a strategy signal to the execution control module. At this time, the execution control module drives the solenoid safety valve 6 and the water valve 7 to release pressure or... The water replenishment process then uses a hardware status monitoring module to feed back the valve status of electromagnetic safety valve 6 and water valve 7 to a reliability assurance module, thereby achieving closed-loop verification and providing rapid response, dual protection, and long-term stability. This device not only addresses positive and negative pressure water hammer by setting two buffer chambers on the inner wall of the protector body 1, but also simplifies operation and facilitates maintenance through quick assembly and installation of the protector body 1 and partition 2. Furthermore, the interaction between the ultra-high-speed acquisition module, core control module, dual-mode processing module, and execution module enhances response speed and rapidly alleviates sudden water hammer pressure.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of long distance water pipeline water hammer protector, comprising a protector main body (1), characterized in that: The body of the protector (1) is fixedly connected to a partition (2). A positive pressure buffer chamber (3) is opened on the upper side of the body of the protector (1). A negative pressure buffer chamber (4) is opened on the lower side of the body of the protector (1). A porous energy dissipation plate (5) is fixedly connected to the inner wall of the body of the protector (1). The outer wall of the porous energy dissipation plate (5) is fixedly connected to the outer wall of the partition (2). An electromagnetic safety valve (6) is provided at the top of the body of the protector (1). The input end of the electromagnetic safety valve (6) is fixedly connected to the inside of the positive pressure buffer chamber (3). A water valve (7) is provided at the bottom of the negative pressure buffer chamber (4). A support box (8) is fixedly connected to the outer wall of the body of the protector (1). A limit component (9) is provided on the outer wall of the body of the protector (1).

2. The novel water hammer protector for long-distance water transmission pipelines according to claim 1, characterized in that: The limiting component (9) includes a first fixing ring (901), the outer wall of which is fixedly connected to the outer wall of the protector body (1), a second fixing ring (902) is slidably connected to the outer wall of the first fixing ring (901), a limiting block (903) is slidably connected inside the protector body (1), the top end of a first spring (904) is fixedly connected to the lower surface of the limiting block (903), the bottom end of the first spring (904) is fixedly connected to the inside of the protector body (1), and the inner wall of the limiting block (903) is engaged with the outer wall of the second fixing ring (902).

3. A novel water hammer protector for long-distance water transmission pipelines according to claim 2, characterized in that: The fixed ring one (901) is fixedly connected to the inside of the rotating shaft (11), the outer wall of the rotating shaft (11) is rotatably connected to the eccentric wheel (12), the outer wall of the eccentric wheel (12) is slidably connected to the sliding block (13), the outer wall of the sliding block (13) is slidably connected to the inside of the protector body (1), the inner wall of the sliding block (13) is fixedly connected to the locking block (14), the outer wall of the locking block (14) is locked to the connecting ring (15), the outer wall of the connecting ring (15) is fixedly connected to the inner wall of the fixed ring two (902), and the inner wall of the fixed ring two (902) is fixedly connected to the connecting pipe (10).

4. A novel water hammer protector for long-distance water transmission pipelines according to claim 1, characterized in that: The main body (1) of the protector is rotatably connected to a rotating plate (16), and a connecting column (17) is fixedly connected inside the rotating plate (16). The outer wall of the connecting column (17) is rotatably connected to the inside of the sliding block (13), and the two ends of the second spring (18) are fixedly connected to the outer wall of the sliding block (13).

5. A novel water hammer protector for long-distance water transmission pipelines according to claim 3, characterized in that: The outer wall of the fixed ring (901) is fixedly connected to a buckle (19), and the outer wall of the eccentric wheel (12) is engaged with the inner wall of the buckle (19).

6. A novel water hammer protector for long-distance water transmission pipelines according to claim 1, characterized in that: The main body (1) of the protector is equipped with a high-frequency dynamic pressure sensor. The output of the high-frequency dynamic pressure sensor is connected to the input of the ultra-high-speed acquisition module. The output of the ultra-high-speed acquisition module is connected to the input of the core control module. The output of the core control module is connected to the input of the dual-mode processing module. The output of the dual-mode processing module is connected to the input of the execution control module. The output of the execution control module is connected to the input of the electromagnetic safety valve (6) and the water valve (7). The outputs of the electromagnetic safety valve (6) and the water valve (7) are both connected to the input of the hardware status monitoring module.

7. A novel water hammer protector for long-distance water transmission pipelines according to claim 6, characterized in that: The output signal of the hardware status monitoring module is connected to the input of the reliability assurance module, and the output signal of the hardware status monitoring module is connected to the input of the core control module.

8. A novel water hammer protector for long-distance water transmission pipelines according to claim 6, characterized in that: The core control module and the reliability assurance module are bidirectionally connected. The core control module includes a hardware PID accelerator, a water hammer classifier, and a dynamic parameter memory. The output signal of the dynamic parameter memory is connected to the input signal of the water hammer classifier, the output signal of the water hammer classifier is connected to the input signal of the hardware PID accelerator, the output signal of the hardware PID accelerator is connected to the input signal of the dynamic parameter memory, and the output signal of the hardware PID accelerator is connected to the dual-mode processing module. The output signal of the execution control module is connected to the input signal of the reliability assurance module. The execution control module includes a PWM generator, an H-bridge driver, and a valve position decoder. The output signal of the PWM generator is connected to the input signal of the H-bridge driver, the output signal of the H-bridge driver is connected to the input signal of the valve position decoder, and the output signal of the dual-mode processing module is connected to the input signal of the PWM generator.

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