A power mobile charging fire pump flow detection control device

Abstract

The application relates to the field of water flow detection control, in particular to a power mobile charging fire pump water flow detection control device, which comprises a detection mechanism, a pump body, a pipeline connected to one end of the pump body through bolts, a sensor installed on the outer side wall of the pipeline, one end of the sensor extending to the inside of the pipeline and being connected with an impeller for measuring water flow velocity, a fixing rod arranged at the middle position of the pipeline, a turnover part arranged on the fixing rod and changing with water flow, and a same part arranged on the turnover part; a protection mechanism, a U-shaped pipe on the pipeline, a sealing plug arranged on the inner wall of the pipeline, a rotating shaft arranged on the side wall of the sealing plug, the sealing plug being connected with the pipeline through the rotating shaft, and a coil spring arranged on the rotating shaft and used for driving the sealing plug to recover. Through the arrangement of the detection mechanism, the protection mechanism and an adjusting mechanism, the water flow velocity can be detected, the water supply pressure is dynamically optimized according to the opening and closing of the valve, the influence of the water hammer effect is reduced, and the pipeline and the equipment are protected to the maximum extent.

Description

Technical Field

[0001] This invention relates to the field of water flow detection and control, and in particular to a water flow detection and control device for a mobile electric charging fire pump. Background Technology

[0002] Electric mobile fire pumps refer to fire pumps driven by electricity, typically using an electric motor as the power source. Compared to traditional diesel or gasoline engines, electric fire pumps are more environmentally friendly and quieter, making them suitable for locations with a power supply, such as urban fire fighting, industrial plants, and warehouses. In places requiring a quiet environment, such as hospitals and schools, to ensure stability when using these fire pumps, a detection device needs to be installed to monitor the water flow rate and facilitate adjustments by staff.

[0003] Fire pumps typically need to be connected to pipelines during use, but the pipelines do not have a device that can automatically adjust the valve opening according to the water flow rate, and cannot dynamically optimize the water supply pressure according to actual needs. Summary of the Invention

[0004] In view of the problems in the above or existing technologies, where fire pumps usually need to be connected to pipelines during use, but the pipelines do not have a device that can automatically adjust the valve opening according to the water flow rate, and cannot dynamically optimize the water supply pressure according to actual needs, this invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a power mobile charging fire pump water flow detection and control device, comprising: a detection mechanism, which includes a pump body, one end of the pump body is bolted to a pipe, a sensor is installed on the outer wall of the pipe, one end of the sensor extends into the inside of the pipe and is connected to an impeller for measuring water flow velocity, a fixed rod is provided at the middle position of the pipe, the fixed rod is provided with a flipping part that changes with the water flow, and the flipping part is provided with a corresponding part; a protection mechanism, including a U-shaped tube on the pipe, a sealing plug is provided on the inner wall of the pipe, a rotating shaft is provided on the side wall of the sealing plug, the sealing plug is connected to the pipe through the rotating shaft, a coil spring is provided on the rotating shaft for driving the sealing plug to return, a buffer part is provided inside the U-shaped tube to reduce the water hammer effect; an adjustment mechanism, including a groove on the pipe and a protective shell, a driving part and a following part are provided inside the protective shell, an adjustment part is provided inside the U-shaped tube, a rotating part is provided on the adjustment part, a protective part is installed on the outer wall of the U-shaped tube, and a slow-descent part is provided on the protective part.

[0006] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the flipping part includes a storage groove on the fixed rod, a sealing plate is provided inside the storage groove, a flipping rod is provided on the sealing plate, a long rod is provided at the middle position of the fixed rod, and a first spring is connected to the side wall of the long rod.

[0007] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the corresponding part includes a chamber on a fixed rod, and one end of the flipping rod extends into the interior of the chamber and is connected to a first gear.

[0008] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the buffer part includes a fixing ring inside a U-shaped tube, a second spring connected to the fixing ring, and a buffer pad connected to one end of the second spring.

[0009] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the drive unit includes an active tube inside the groove, the top of the active tube is provided with a first wave-shaped section, the bottom of the active tube is connected to an active rod, one end of the active rod extends into the interior of the fixed rod and is connected to a second gear, and a third gear is provided on the first gear.

[0010] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the following part includes a follower tube inside the protective shell, the bottom of the follower tube is provided with a second wave-shaped section, and the top of the follower tube is connected to a follower rod.

[0011] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the adjusting part includes a base inside a U-shaped tube, a bidirectional screw is provided on the base, a stop block is sleeved on the side wall of the bidirectional screw, a limit block is connected to the bottom of the stop block, and a strip-shaped opening for water outlet and limit is provided on the side wall of the U-shaped tube.

[0012] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the rotating part includes a fourth gear on a bidirectional lead screw, a cut on the side wall of the U-shaped tube, and a rack connected to the follower rod.

[0013] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the protective part includes a tank on the outer wall of the U-shaped tube, and air holes are provided at the top and bottom of the tank.

[0014] As a preferred embodiment of the electric mobile charging fire pump water flow detection and control device of the present invention, the slow descent part includes a lifting rod on a rack, a lifting plate connected to the top of the lifting rod, and a rubber conical tube installed inside the air hole, with the tip of the rubber conical tube facing upward.

[0015] The beneficial effects of the electric mobile charging fire pump water flow detection and control device of the present invention are as follows:

[0016] 1. With the installation of detection, protection, and adjustment mechanisms, the water flow delivered by the fire pump can be monitored in real time, facilitating timely adjustments by staff. As the water flow velocity inside the pipeline varies, the valve opening can be automatically adjusted according to the flow velocity. The use of synchronous double-opening valves maximizes the water flow inside the pipeline and helps balance the water flow rate inside the pipeline, preventing pipe wall rupture caused by different water pressures on the inner wall.

[0017] 2. The water supply pressure is dynamically optimized based on the valve opening and closing to mitigate the impact of water hammer and protect pipelines and equipment to the greatest extent. As the sealing plate gradually opens, the movement path of the buffer pad is increased. When the maximum path is reached, some of the water inside the U-shaped pipe can be discharged to mitigate the water hammer effect. At the same time, the movement path of the buffer pad is prevented from shortening during the sealing plate restoration process. By reducing the lowering speed of the lifting plate, sufficient movement path of the buffer pad is ensured to achieve the goal of reducing the pressure caused by water hammer. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a water flow detection and control device for a mobile electric charging fire pump.

[0020] Figure 2 A schematic diagram of the cross-section of a U-shaped tube for the water flow detection and control device of a mobile electric charging fire pump.

[0021] Figure 3 A schematic diagram of the sealing plug for the water flow detection and control device of a mobile electric charging fire pump.

[0022] Figure 4 A schematic diagram of the sealing plate for a water flow detection and control device for a mobile electric charging fire pump.

[0023] Figure 5 A schematic diagram of the interior of the chamber of the electric mobile charging fire pump water flow detection and control device.

[0024] Figure 6 A schematic diagram of a bidirectional lead screw for a mobile electric charging fire pump water flow detection and control device.

[0025] Figure 7 A schematic diagram showing the separation of the active pipe and the follower pipe in the water flow detection and control device for a mobile electric charging fire pump.

[0026] Figure 8 A cross-sectional schematic diagram of the tank for the water flow detection and control device of the electric mobile charging fire pump.

[0027] In the diagram: 10. Pump body; 11. Pipeline; 12. Sensor; 13. Impeller; 14. Fixing rod; 15. Tilting part; 151. Storage slot; 152. Sealing plate; 153. Tilting rod; 154. Long rod; 155. First spring; 16. Corresponding part; 161. Chamber; 162. First gear;

[0028] 20. U-shaped tube; 21. Sealing plug; 22. Rotating shaft; 23. Coil spring; 24. Buffer section; 241. Retaining ring; 242. Second spring; 243. Buffer pad;

[0029] 30. Groove; 31. Protective shell; 32. Drive unit; 321. Active tube; 322. First wave-shaped section; 323. Active rod; 324. Second gear; 325. Third gear; 33. Follower unit; 331. Follower tube; 332. Second wave-shaped section; 333. Follower rod; 34. Adjustment unit; 341. Base; 342. Two-way lead screw; 343. Stop block; 344. Limiting block; 345. Strip-shaped opening; 35. Rotating unit; 351. Fourth gear; 352. Rack; 353. Cutout; 36. Protective unit; 361. Tank body; 362. Air hole; 37. Slow descent unit; 371. Lifting rod; 372. Lifting plate; 373. Rubber conical tube. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Reference Figures 1 to 8 This invention provides a water flow detection and control device for a mobile electric charging fire pump, which includes a detection mechanism, a protection mechanism, and an adjustment mechanism. It can detect the flow velocity of the water pump and display the detection data through a sensor 12 for easy viewing by staff. At the same time, it can automatically adjust the valve opening according to the water flow velocity and dynamically optimize the water supply pressure based on the valve opening and closing to mitigate the impact of water hammer and maximize the protection of the pipeline 11 and equipment.

[0032] Furthermore, the testing mechanism can detect the flow velocity of the water inside the pipe 11, and automatically adjust the valve opening according to the flow velocity, dynamically optimizing the water supply pressure according to actual needs. It includes a pump body 10, one end of which is connected to the pipe 11 by bolts. A sensor 12 is installed on the outer wall of the pipe 11. One end of the sensor 12 extends into the inside of the pipe 11 and is connected to an impeller 13 for measuring the flow velocity. A fixed rod 14 is set in the middle of the pipe 11. A flipping part 15 that changes with the water flow is set on the fixed rod 14. A corresponding part 16 is set on the flipping part 15.

[0033] When in use, after the staff connects the pipe 11 to the pump body 10, they start the pump body 10 to deliver water. When the water flows through the impeller 13, it can drive the impeller 13 to rotate, and the water flow rate is monitored in real time. The monitoring data is collected by the sensor 12 and fed back to the staff.

[0034] Furthermore, the flipping part 15 includes a storage slot 151 on the fixing rod 14. The storage slot 151 is located on the side wall of the fixing rod 14. There are two storage slots 151. A sealing plate 152 is provided inside the storage slot 151. A flipping rod 153 is provided on the sealing plate 152. The sealing plate 152 can be flipped around the flipping rod 153. A long rod 154 is provided at the middle position of the fixing rod 14. The long rod 154 is located between the two sealing plates 152. A first spring 155 is connected to the side wall of the long rod 154. There are two first springs 155. The ends of the two first springs 155 away from the long rod 154 are respectively connected to the sealing plates 152.

[0035] It should be noted that when the sealing plate 152 is not subjected to water flow impact, the first spring 155 pulls the two sealing plates 152 so that when the two sealing plates 152 are horizontally parallel, the inside of the pipe 11 is sealed.

[0036] When in use, when water flows through pipe 11 and impacts sealing plate 152, it can cause the two sealing plates 152 to flip. When the two sealing plates 152 flip, the first spring 155 contracts. When the pump body 10 stops pumping water, the first spring 155 returns to its original state, which can cause the two sealing plates 152 to return to their initial state.

[0037] Furthermore, the corresponding part 16 includes a chamber 161 on the fixing rod 14, and one end of the flipping rod 153 extends into the interior of the chamber 161 and is connected to the first gear 162.

[0038] When in use, when the water flow impacts the sealing plate 152 and causes the sealing plate 152 to flip, the first gear 162 and the flipping rod 153 can ensure that the flipping of the two sealing plates 152 is synchronized, making the optimized adjustment of water pressure more stable, ensuring that the water flow on both sides of the fixing rod 14 is balanced, reducing the impact of water fluctuations on the pipe 11, avoiding excessive water pressure on one side, and reducing the risk of damage to the pipe 11.

[0039] Furthermore, a protective mechanism can prevent damage to the pipeline 11 caused by the water hammer effect when the pump body 10 suddenly stops. This mechanism includes a U-shaped pipe 20 on the pipeline 11, which is located above the pipeline 11 and has both ends connected to the pipeline 11. A fixing rod 14 is located in the middle of the U-shaped pipe 20. A sealing plug 21 is provided on the inner wall of the pipeline 11, and a rotating shaft 22 is provided on the side wall of the sealing plug 21. The sealing plug 21 is connected to the pipeline 11 through the rotating shaft 22. The sealing plug 21 is located at the opening of the U-shaped pipe 20. A coil spring 23 is provided on the rotating shaft 22 to drive the sealing plug 21 to return to its original position. A buffer part 24 is provided inside the U-shaped pipe 20 to reduce the water hammer effect.

[0040] It should be noted that when the pump body 10 is not pumping water, the coil spring 23 drives the sealing plug 21 to seal the U-shaped pipe 20.

[0041] When in use, if the water outlet stops discharging water while the pump body 10 is still pumping water, the water flow inside the pipe 11 will be blocked, causing the water pressure inside the pipe 11 to increase rapidly. The water flow will impact various parts of the inner wall of the pipe 11, and the reaction force of the water flow will open the sealing plug 21. In order to avoid water hammer effect damaging the pump body 10, under the action of the sealing plug 21, the rotating shaft 22 and the coil spring 23, the water flow inside the pipe 11 can enter the interior of the U-shaped pipe 20 for pressure relief, thus preventing the pipe 11 from bursting.

[0042] Furthermore, the buffer section 24 includes two fixing rings 241 inside the U-shaped tube 20. The two fixing rings 241 are respectively located near the outlet of the U-shaped tube 20. A second spring 242 is connected to the fixing ring 241. One end of the second spring 242 is connected to a buffer pad 243, which can move inside the U-shaped tube 20.

[0043] When in use, when water flows into the interior of the U-shaped tube 20, in order to further reduce the impact force of the water flow, when the water flow impacts the buffer pad 243, the buffer pad 243 drives the second spring 242 to extend during the movement, and the impact force of the water flow is gradually reduced by the tension of the second spring 242.

[0044] The adjustment mechanism can increase the moving distance of the sealing gasket according to the opening and closing of the sealing plate 152. When the water pressure is high, the water inside the pipe 11 can be discharged appropriately to relieve pressure and avoid damage to the pipe 11. It includes a groove 30 and a protective shell 31 on the pipe 11. The groove 30 is located in the middle of the U-shaped tube 20 and the opening of the groove 30 faces upward. The protective shell 31 covers the groove 30. The protective shell 31 is provided with a driving part 32 and a follower part 33 inside. The U-shaped tube 20 is provided with an adjustment part 34. The adjustment part 34 is provided with a rotating part 35. The outer wall of the U-shaped tube 20 is provided with a protective part 36. The protective part 36 is provided with a slow-descent part 37.

[0045] Furthermore, the drive unit 32 includes an active tube 321 inside the groove 30. The top of the active tube 321 is provided with a first wave-shaped cut surface 322. The bottom of the active tube 321 is connected to an active rod 323. One end of the active rod 323 extends into the interior of the fixed rod 14 and is connected to a second gear 324. A third gear 325 is provided on the first gear 162.

[0046] It should be noted that the third gear 325 is located on the side adjacent to the groove 30, and there is only one third gear 325. When the two first gears 162 drive each other, one of the first gears 162 drives the third gear 325 to rotate synchronously, and the third gear 325 drives the second gear 324 to rotate, thereby causing the drive rod 323 to rotate together.

[0047] Furthermore, the follower part 33 includes a follower tube 331 inside the protective shell 31. The side wall of the follower tube 331 is slidably connected to the inner wall of the protective shell 31, so that the follower tube 331 can only move up and down on the inner wall of the protective shell 31 and cannot rotate. The bottom of the follower tube 331 is provided with a second wave-shaped cut surface 332, and the top of the follower tube 331 is connected to a follower rod 333.

[0048] It should be noted that the first wave section 322 and the second wave section 332 are compatible. When the first wave section 322 and the second wave section 332 are in full contact, the active tube 321 and the follower tube 331 can form a sealed tube body.

[0049] When in use, when the active rod 323 rotates, the active tube 321 will rotate. As the first wave cut surface 322 presses against the second wave cut surface 332, the follower tube 331 will rise, and the follower tube 331 will drive the follower rod 333 to rise.

[0050] Furthermore, the adjustment unit 34 includes a base 341 inside the U-shaped tube 20. There are two bases 341. A bidirectional lead screw 342 is provided on the base 341. The bidirectional lead screw 342 can rotate on the base 341. A stop block 343 is sleeved on the side wall of the bidirectional lead screw 342. A limit block 344 is connected to the bottom of the stop block 343. A strip-shaped opening 345 for water outlet and limit is opened on the side wall of the U-shaped tube 20. The strip-shaped opening 345 is located at the bottom of the inner wall of the U-shaped tube 20, and there are two strip-shaped openings 345. The two strip-shaped openings 345 are adjacent to the fixed rod 14.

[0051] It should be noted that, through the setting of the limiting block 344 and the strip-shaped opening 345, when the bidirectional screw 342 rotates, the stop block 343 can move left and right, and the water can be discharged from the strip-shaped opening 345.

[0052] Furthermore, the rotating part 35 includes a fourth gear 351 on the bidirectional lead screw 342, the fourth gear 351 is located between the two bases 341, a cutout 353 is provided on the side wall of the U-shaped tube 20, a rack 352 is connected to the follower rod 333, the rack 352 is located at the top of the follower rod 333, the rack 352 meshes with the fourth gear 351, and the rack 352 is located at the cutout 353.

[0053] When in use, when the follower rod 333 rises, it can drive the rack 352 to rise together. The rack 352 drives the fourth gear 351 to rotate, and the fourth gear 351 drives the double-acting screw 342 to rotate, thereby causing the stop block 343 to move, thereby adjusting the buffer distance of the buffer pad 243.

[0054] Furthermore, the protective part 36 includes a tank 361 on the outer wall of the U-shaped tube 20, with air holes 362 at both the top and bottom of the tank 361.

[0055] Furthermore, the descent section 37 includes a lifting rod 371 on the rack 352, with a lifting plate 372 connected to the top of the lifting rod 371, and a rubber conical tube 373 installed inside the air hole 362, with the tip of the rubber conical tube 373 facing upward.

[0056] In use, the lifting rod 371 can move up and down with the rack 352, causing the lifting rod 371 to drive the lifting plate 372 to rise. The air outside the tank 361 quickly enters the tank 361 through the rubber conical tube 373. When the lifting rod 371 is not supported by an upward force, under the action of gravity, the lifting rod 371 drives the lifting plate 372 to fall, compressing the air inside the tank 361. This causes the tip opening of the rubber conical tube 373 to contract, slowing down the speed of air expulsion, thereby reducing the descent speed of the lifting rod 371 and the lifting plate 372.

[0057] Working principle:

[0058] When it is necessary to test the output water flow of pump body 10, before using pump body 10 to deliver water, the operator first connects pipe 11 to pump body 10 with bolts, and connects the other end of pipe 11 to water pipe. The operator starts pump body 10, and pump body 10 delivers water flow into the interior of pipe 11. The water flow first drives impeller 13 to rotate. Impeller 13 collects water flow velocity data by rotating. The data is collected by sensor 12 and fed back to the operator. When the water flow enters the interior of pipe 11, the water flow continues to flow and opens sealing plate 152. As sealing plate 152 opens, sealing plate 152 drives first spring 155 to contract. Under the action of first gear 162, the two sealing plates 152 simultaneously flip and move closer to long rod 154. As the flow velocity of water inside pipe 11 changes, the opening and closing degree of sealing plate 152 also changes accordingly, dynamically optimizing water supply pressure according to actual needs.

[0059] To prevent the water hammer effect caused by the sudden stop of the pump body 10 from causing the pipe 11 to rupture and damage the equipment, when the pump body 10 stops supplying water, the backflow of water inside the pipe 11 will open the sealing plug 21, and the water will enter the interior of the U-shaped pipe 20, reducing the impact force of the water flow on the inner wall of the pipe 11. When the water flows into the interior of the U-shaped pipe 20, the water flow can drive the buffer pad 243 to move inside the U-shaped pipe 20, further depressurizing and preventing the pipe 11 from rupturing.

[0060] Because the water flow velocity inside pipe 11 varies, the intensity of the water hammer effect also varies. To prevent the water hammer effect from causing pipe 11 to rupture, it is necessary to further release the pressure caused by the water hammer effect. During the opening of the sealing plate 152, the sealing plate 152 drives the flipping rod 153 to rotate. The flipping rod 153 drives the first gear 162 to rotate, the first gear 162 drives the third gear 325 to rotate, the third gear 325 drives the second gear 324 to rotate, the second gear 324 drives the driving rod 323 to rotate, and the driving rod 323 drives the driving pipe 321 to rotate. Through the setting of the first wave section 322 and the second wave section 332, when the driving pipe 321 rotates... This allows the follower pipe 331 to rise under the action of the active pipe 321. The follower pipe 331 drives the follower rod 333 to rise, and the follower rod 333 drives the rack 352 to rise. During the process of the rack 352 driving the lifting rod 371 to rise, the fourth gear 351 will rotate. When the fourth gear 351 rotates, it drives the bidirectional lead screw 342 to rotate, causing the stop block 343 on the bidirectional lead screw 342 to drive the limit block 344 to move closer to each other. As the stop block 343 moves, the movement space of the buffer pad 243 inside the U-shaped pipe 20 increases, further improving the buffering effect. Moreover, as the stop block 343 moves, the water flow inside the U-shaped pipe 20 can flow out from the strip-shaped opening 345 to relieve pressure.

[0061] To prevent the rapid descent of the lifting rod 371 from causing the stop block 343 to also return to its initial position when the water flow reverses and pushes the sealing plate 152 back to its initial state, thus affecting the movement space of the buffer pad 243, the lifting rod 371 rises along with the rack 352, causing the lifting plate 372 to rise. This gradually increases the air volume at the bottom of the lifting plate 372. When the sealing plate 152 returns to its initial position under the action of the water flow and the first spring 155, the rubber conical tube 373 slows down the descent speed of the lifting plate 372, ensuring the safety of the buffer pad 243. The movable space of 3 facilitates the discharge of water from the strip-shaped outlet 345 for pressure relief, maximizing the protection of pipe 11 and equipment. After pressure relief is completed, as the gas under the lifting plate 372 is gradually discharged, the lifting rod 371 drives the rack 352, which in turn drives the fourth gear 351 to rotate, causing the stop block 343 on the bidirectional screw 342 to return to its initial position. The rack 352 then drives the follower rod 333 to descend, which in turn drives the follower pipe 331 and the active pipe 321 to close again, facilitating subsequent pressure relief and preventing water hammer damage to pipe 11.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A mobile electric charging fire pump water flow detection and control device, characterized in that: include, The detection mechanism includes a pump body (10), one end of which is connected to a pipe (11) by bolts. A sensor (12) is installed on the outer wall of the pipe (11). One end of the sensor (12) extends into the inside of the pipe (11) and is connected to an impeller (13) for measuring the water flow velocity. A fixed rod (14) is provided in the middle of the pipe (11). A flipping part (15) that changes with the water flow is provided on the fixed rod (14). A co-positioning part (16) is provided on the flipping part (15). The protection mechanism includes a U-shaped tube (20) installed on the pipe (11), a sealing plug (21) installed on the inner wall of the pipe (11), a rotating shaft (22) installed on the side wall of the sealing plug (21), the sealing plug (21) being connected to the pipe (11) through the rotating shaft (22), a coil spring (23) for driving the sealing plug (21) to return to its original position on the rotating shaft (22), and a buffer part (24) for reducing water hammer effect installed inside the U-shaped tube (20). The adjustment mechanism includes a groove (30) and a protective shell (31) provided on the pipe (11). The protective shell (31) is provided with a drive part (32) and a follower part (33). The U-shaped tube (20) is provided with an adjustment part (34). The adjustment part (34) is provided with a rotating part (35). The outer wall of the U-shaped tube (20) is provided with a protective part (36). The protective part (36) is provided with a slow-descent part (37). The flipping part (15) includes a storage slot (151) provided on the fixed rod (14). The storage slot (151) is located on the side wall of the fixed rod (14). There are two storage slots (151). A sealing plate (152) is provided inside the storage slot (151). There are two sealing plates (152). A flipping rod (153) is provided on each of the two sealing plates (152). A long rod (154) is provided at the middle position of the fixed rod (14). The long rod (154) is located between the two sealing plates (152). A first spring (155) is connected to the side wall of the long rod (154). There are two first springs (155). The ends of the two first springs (155) away from the long rod (154) are respectively connected to the sealing plates (152). The corresponding part (16) includes a chamber (161) provided on the fixed rod (14), and two flipping rods (153). One end of each flipping rod (153) extends into the interior of the chamber (161) and is connected to a first gear (162). The two first gears (162) mesh with each other. The buffer section (24) includes a fixing ring (241) disposed inside the U-shaped tube (20). There are two fixing rings (241), which are respectively located near the two outlets of the U-shaped tube (20). A second spring (242) is connected to the fixing ring (241), and a buffer pad (243) is connected to one end of the second spring (242). The drive unit (32) includes an active tube (321) disposed inside the groove (30). The top of the active tube (321) is provided with a first wave-shaped cut surface (322). The bottom of the active tube (321) is connected to an active rod (323). One end of the active rod (323) extends into the interior of the fixed rod (14) and is connected to a second gear (324). A third gear (325) is provided on one of the first gears (162). The second gear (324) meshes with the third gear (325). The follower part (33) includes a follower tube (331) disposed inside the protective shell (31). The side wall of the follower tube (331) is slidably connected to the inner wall of the protective shell (31). A second wave-shaped section (332) is provided at the bottom of the follower tube (331). The first wave-shaped section (322) and the second wave-shaped section (332) are adapted to each other. When the first wave-shaped section (322) and the second wave-shaped section (332) are in full contact, the active tube (321) and the follower tube (331) can form a sealed tube body. The top of the follower tube (331) is connected to a follower rod (333). The adjustment unit (34) includes a base (341) disposed inside the U-shaped tube (20). There are two bases (341). A bidirectional screw (342) is disposed on the base (341). The bidirectional screw (342) can rotate on the base (341). A stop block (343) is sleeved on the side wall of the bidirectional screw (342). A limit block (344) is connected to the bottom of the stop block (343). A strip-shaped opening (345) for water outlet and limit is opened on the side wall of the U-shaped tube (20). The strip-shaped opening (345) is located at the bottom of the inner wall of the U-shaped tube (20), and there are two strip-shaped openings (345).

2. The electric mobile charging fire pump water flow detection and control device as described in claim 1, characterized in that: The rotating part (35) includes a fourth gear (351) and a rack (352). The fourth gear (351) is mounted on a double-acting screw (342) and is located between two bases (341). A cut (353) is provided on the side wall of the U-shaped tube (20). A rack (352) is connected to the follower rod (333). The rack (352) is located at the top of the follower rod (333). The rack (352) meshes with the fourth gear (351). The rack (352) is located at the cut (353). When the follower rod (333) rises, the follower rod (333) can drive the rack (352) to rise together. The rack (352) drives the fourth gear (351) to rotate. The fourth gear (351) drives the double-acting screw (342) to rotate, thereby causing the stop (343) to move, thereby adjusting the buffer distance of the buffer pad (243).

3. The electric mobile charging fire pump water flow detection and control device as described in claim 2, characterized in that: The protective part (36) includes a tank (361) installed on the outer wall of the U-shaped tube (20), and air holes (362) are provided at the top and bottom of the tank (361). The slow-descent section (37) includes a lifting rod (371) mounted on a rack (352). The top of the lifting rod (371) is connected to a lifting plate (372). A rubber conical tube (373) is installed inside the air hole (362). The tip of the rubber conical tube (373) faces upward. In use, the lifting rod (371) can move up and down with the rack (352), causing the lifting rod (371) to drive the lifting plate (372) to rise. The air outside the tank (361) quickly enters the tank (361) through the rubber conical tube (373). When the lifting rod (371) is not supported by an upward force, under the action of gravity, the lifting rod (371) drives the lifting plate (372) to descend, squeezing the air inside the tank (361). This causes the tip opening of the rubber conical tube (373) to contract, slowing down the speed of air discharge, thereby reducing the descent speed of the lifting rod (371) and the lifting plate (372).

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